DESCRIPTION BATTERY PACK Technical Field o [0001] The present technology relates to a battery pack, capable of being mounted to an electronic appa ralua. Background Art [0OD2] In a compact electronic apparatus sudi as a 10 digital sti 11 camera, a digital video camera, or a mobile phone, a battery pack J ike a lithium-"ion secondary battery is mounted in a detachable state. Seine battery packs are knowi,) to include control terminals lor communication and temperature dctcctnon 15 terminals for temperature detection, i EI addition to positive terminals and negative terminals. For example, Patent Document 1 below discloses a battery pack i nniudiny, on the front thereof", a tcrmina.l unit; in Which a control l.enninal, a negative terminal, a 20 temperature detection terminal, and a positive terminal Eire arranged in the stated order in a width direction thereof. [00031 On the other hand, generally, a battery pack is prepared for each model of electronic apparatuses, 25 and the arrangement of contacts connected to the terminals of the battery pack is different among each SP344201WOOG 2 model of electronic apparatuses. Therefore, in an e.l ect runic apparatus to which a battery pack including a temperature detection terminal and a control terminal in addition to a positive terminal and a negative 5 terminal is mounted, the arrangement of contacts to be connected to those terminals is determined so as to correspond to the arrangement of those terminals of the battery pack. f00041 Patent document 1: Japanese Patent 10 Application Laid-open No. 2009-376336 Summary of invention Problem to be solved by the "Invention [0005] Howevei, in the case where a battpry pack, is not correctly mounted to an electronic apparatus or the 15 shape of a contact of the electronic apparatus is defective* a proper mounting state of the battery pack. and the electronic apparatus cannot be ensured, which causes a possibi1i ty that the electronic apparatus cannot be correctly operated. 20 [000f>] In view of the circumstances as described above, it is an object of the present technology to provide a battery pack capable of ensuring a normal operation of an electronic apparatus- Means for solving the Problem . ... 25 [00071 In order to achieve the object descried above, according to an embodiment of the present 5P344201WQOQ 3 technology, there is provided a battery pack including a p*ack body and a plurality of terminals. The pack body has a first main surface and a second main surface that are opposed to each other in a 5 first axis direction, a first end surface and a second end surface that are opposed to each other i n a second axis direction orthogonal to Lite first axis direction, and a first side surface and a'second side surface that art? opposed to eac:h other in a third axis direction 10 orthogonal to the first axis directi on and the second axis di reel.ion . The plurality of terminals include a positive terminal, a negative terminal, a temperature detection terminal, and a control terminal that are arranged on 15 the first end surface along the third axis direct-ion. Thi1 negative [.erminal is arranged between the temperature detection terminal and the coni.rijl termi nal and closes: to the control terminal than the temperature detection terminal, ?Q [00U8J In the battery pack described above, the negative terminal arranged between the temperature detection terminal and the control termi na.l 5 s arranged closer to the control terminal Uian the temperature detection termina-i. -Accordingly, a contact of an 25 el ectronic apparatus, whi ch is to be connected to the negative terminal, is prevented from being erroneously SP34 4201WO00 4 connected to the tempersture detection terminal, and a state where the contact is properly connected to the negative terminal can be stably maintained, As a result, a normal operation of the electronic apparatus can be 5 ensured. tuQ09] The first end surface may include a first terminal window, a second terminal window, a thi rd terminal window, and a fourth terminal window. The first terminal window exposes the control ]0 terminal to an outside. The second terminal window is provided apart from the first terminal window by a first gap and exposes l.he negative terminal to the outside. The third terminal window is provided apart from tne second terminal window by a second gap larger 15 than the first gap and exposes the tcjiip^./rtture defection terminal to the outside. The fourth terminal window exposes the positive terminal to the outside. [0010] The temperature detection terminal may be arranged between the negative terininal and the positive 20 terminal. Since: a distance between the positive terminal and the negative terminal can be increased, electrical insulation between both the terminals can be enhanced. [0011] The positive terminal may hav= an area larger 25 than that of the negative terminal. According1y, a degree of freedom on the arrangement of the contact of SP3442G1WO0G the electronic apparatus is enhanced, and a proper mounting state of the battery pack can be ensured. [0012] The tirst end surface may include a first concave portion provided close to the flist side 5 surface and a second concave portion provided close to the second s:de surface. The first concave portion and the second concave portion are arranged on the first end surface and closer to the second Main surface than [.he tirst main surface. 10 Accordingly, a function of preventing the battery pack, from being erroneously inserted into the electronic apparatus can be obtained. [0013] in this cane, the plurality of terminals may be auanged on the first end surface and closer to the 15 tirst s.i de surfn'.:^. l.han the second wide surface. Since the symmetry of Lhe terminals with reaped. to a center line extending on the first end surface and being parallel to the f i rst. axis direction is lost., an electrical connection between the l.erminals and the 20 electronic apparatus at the time of erroneous insertion can be hindered. [0014] Kurther, in the above case, Lhe first concave portion may have a width dimension larger than that of . the .second - concave poition in the .third axis direction. 25 Accordingly, the inter Terence between the first concave portjon and Lhe electronic apparatus can be SP344201WO00 prevented at the time of proper insertion, and a stable electrical connection wi th the electronic apparatus can be ensu red * [0015] The plurality of terminals may be arranged on 5 the first end surface and closer to the first main surtace than the second main surface. Since the symmetry of the terminals with respect to a center line extending on the f:rat end surface and being parallel to the th.i rd axis direction is lost, an 10 electrical connection between the teiminals and the electronic apparatus at the time of erroneous J riser Lion can be hindered. [0016] The second end surface (nay include a locking portion configured to be locked to an electronic 15 apparatus. Jn this case, the locking portion is arranged on the second end surface and cJ oser ?;o t.ht? second main surface l.han the first main surface. Accordingly, for example, in the case where: the battery pack is mounted to the electronic apparatus 20 with the first end surface side of the baU.ery pack being brought into contact wi th the electron:c apparatus while the second end surface side of the battery pack is rotatably moved about an axis parallel to the third axis di rect. Lon, the battery-pack can be 25 prevented from being accidentally detached from the electronic apparatus, SP3442O1W0OO 7 Eifect of the Invention [0017] As described above, according to the present technology, a normal operation of the electronic apparatus can be ensured. 5 Brief Description of Drawings [001BJ [Fig- lj Fig. 1 is a perspective view of a battery pack according to an embodiment of the present technology. [Fig. 2} K.ig, 2 is a plan view of the battery 10 pack. [Fiq, 3] J'\ng, 3 is a Front view of the battery pack. [Fig. 4] Fig. 4 is a right side, view of the battery pack. 15 [Fig. b] Fig. b is a left side view of the battery pack, [Fig. 6J Fig. 6 is an exp.l oded perspective view of the battery pack. LFig. 7] Fig. 7 is a plan view showing a detailed 20 conf .i gurati on of a tezininal surface of the battery pack. [Fig. fij Fig. 8 is a front view schema t.ically showing an electronic apparatus Lo which the battery pack ts mounted. 2b [Fiq, 9} i''iq. 9 is a ctoss-sectional view of a main pail, of the electronic apparatus to which the SP344201WO00 8 battery pack is inounted. [Fig. 10] Fig. 10 is a perspective view showing a structure of an inner surface of a Lop cover that forms the terminal surface of the battery pack. 5 [Fig- i1) Fig, 11 is a bott.om view showing the structure o± the inner surface of the top cover. [F"ig- 12] Fi q - 12 is a plan view or. the top cover. [Fig, 13] Fig, 13 is a plan view of a boi.i.om cover thai, forms a rear surface of the battery pack. 10 [Fig- 14] Fig, 14 is a cross-senLional view of a main pai(. of l.he electron it- apparatus to which the battery pack is mounted. .1 [Fig. 15] Fig. IS is a cross-secti onal vi ew of a main part of another electronic apparatus to which the lb battery pack is mounted. JFiy. 16] Fly. 16 iji a plan view for describing details of terminal windows formed on l.he top coyer. Mode- (u) !or Carrying Out the Invention [0019] Hereinafter, an embodiment, of the present. 20 technology will be described with reference to the drawings. [0020] Figs. 1 to 5 each show an outer appearance of a battery pac>: according to an embodiment or. the present technology; Fig. 1 is a perspective view, i-'i g- 25 P -i K a plan view, Fig. 3 i M a f iont view, Fig. 4 is a right side view, and Fig. 5 is a left side view, in SP344201WO0O 9 each fIgure, directions of three &xes orthogonal to one another are denoted by X, Y, and 'A. [0021] A battery pack 100 of this embodiment includes a pack body 10 and a terminal unit 20. 5 [00221 [Pack body] The pack body has an upper .surface 11 ffirst main surface}, a lower surface 12 (second ma.i n surface)* a front surface 13 (first end surface), a rear surface 14 [second end surface), a right side surface lb (first 10 side surface) , and a left side sut-iace 16 (second side surface} . The upper surface II and the ] owei surface 12 ^re; opposed to each other in an X-axis d.i recti on [first axj-S direction} . The front surface 13 and the rear surface 14 are opposed to each other in a "Y-axis II) direction (second axis direction) . The right side surface lb and the lett side surface 16 are opposed to each other in a tf-axis di recti on [third axis direction), In the figure, the X-axis direction corresponds to a thickness direction of the battery pack, the Y-axis 20 direction corresponds to a length direction thereof, and the E-axis direction corresponds to a wi dt-h direction thereof. [0023] The pack body 10 is formed in a substantially -- rectangular and-flat shape as a whole. The upper 25 suiface 11 and the lower surface 12 arc each formed of a substantially flat surface. 'J'he? front surface 13 and SF344201YJOG0 10 the rear surface 1^ each have a difference in level, and surfaces formed of the differences in level arc ^ach formed of a substantially flat surface. The right $:de surface 15 and the left side surface 3 6 dre each. 5 formed of an arc-shaped surface bulging outward. As shown in Fig. 2, the pack body 10 is substantially Synaiietric with respect to a center line Pi passing the center of the width direction of the front .-SUITface 13 •snd being parallel to the X-axis direction and is also 10 substantially symmetric with respect to a center line P2 passing the center of the thickness direction of the trout surface 13 and being parallel to the Z-axis direction, when vijewed from the front surface 13 side. [0024] I'i g, (i is an exploded perspective view of a 15 Tnain part of the battery pack 100. The pack body 10 inc]udes a cell unit 30, a top cover 31 fixed to a Trent end of the ccJ. 1 unit 30, and a bottom ™ v e r 32 fixed 1-u ,-J rear end of the eel 1 sin it 30. The top cover 31 forms the front surface 13 of the pack body 10, and 20 the bottom cover 32 forms the rear surface 14 of the pack body 10. [0025] The cell unit 30 includes a can body having a substantial .1 y rectangular, flat tube Khape as a whole, ^nd a battery coll incorporated into the can body- The 25 battery cell in constituted of a nun-aqueous electrolyte secondary battery such as a lithium'- if in SP344201WOU0 11 secondly bat.Leiy. The can body is formed of, for example, a metal material such as a.l urnirium. A resin layer of nylon or the like is provided on a surface of the can body to achieve electrical insulation and 5 protection of l.he surface of the can body, further, a resin layer that is made of polypropylene or the like and excellent in insulation property and bending property is provided on an 5 nfier surface of the can body, and the can body is capable of being heat-sealed 10 with the top cover 31 and l.he bottom cover 32 via the resin layer. |"002fi] The Lop cover 31 and the bottom cover 32 are each formed of, for example, an injection molded body of a synl.hel-i r: iesin material made of polypropylene or 15 the like. The top cover 31 is attached to the coll unit 30 SO as to cover the front end thereof. The bottom cover 32 is attached to the cell unit 30 so o.s to the rear end thereof. The top cover 31 and the bottom cover 32 have an outer shape corresponding to that of the 20 front end and the rear end of the cell unit 30. Therefore, the top cover 31 and the bottom cover 32 have a substantially oblonq shape in plan view. [0027] A label 17 iy, attached to the pack body 10 over the upper surface 11, the-rear surface 14, and the ?5 lower surface 12. The label 17 is formed of a resin sheet made of polyethylene terephthaiate, for example. SP344201KOOU 12 A front slide of the label 17 is a printed surface on whioh an insertion direction, a manufacturer name, a model, a mark of terminal, and th^ like arc printed, A rear side of the label 17 is a bonding surface on which 5 a bondUTtg laypr is formed. E002S] [Terminal unit] The terminal unit 20 is accommodated between the cell unit 30 and the top cover 31 ^ The terminal unit 20 includes a wiring substrate 21 , a po-siLive tab 22 and a 10 negative tab 23, a holder 24, and a PTC (Positive TeniperaLure Coefficient) thermistor 25 that are arranged in the ."stjjLed order from the top cover 31 side IUU29] The holder 24 supports (.he positive tabj22 and the negative tab 23. The positive tab ?? and the 15 negative tab 23 are connected to a positive lead terminal and a negative lead terminal, respectively, which are drawn from the inside or the cell unit 30. The PTC 25 is arranged between the?, negative tab 23 and the neqativc ]cad terminal- The PTC 25 has a function 20 of substantially blocking a current that flows into the ecl 1 unit 30 when l.he temperature of the eel 1 unit 30 is higher than, a set temperature ^nd electrical rcs.i stance iihiuplJy i nt:reaves . [0030] A double-sided substrate? is used-for the 25 wiring substrate 21. A positive terminal 21a, a negative terminal 21b, a temperature detection terminal SP344201WOOQ 1.1 ?lr.f and a control terminal 21d are arranged on the surface of the wiring substrate 21 on the top cover 31 side. The positive terminal 2la and the negative terminal 21b arc cicctrically connected tu the positive 5 tflb 22 and the negative tab 23, respectively, which are opposed to the rear surface of the wiring substrate 21. The terminals 21a to 2Id are formed to have a conductive pattern obtained by, lor example, laminating gold plating layers on a surface of copper Toil. 10 [0031] FIJI [.her, & thermi stor as a temperature detection device, a protection circuit that monitors a voltage between terminals, a determination circuit that determines a type of battery and the like, etc. are snanged on the aurfart; nf the wiring substrate 21 . The 15 thermistor .is connected to the temperature detection terminal 21c, and the determination circu.i t i s connected to the control terminal 2ld, for example. It should be noted that the determinatJ on circuil may nol be mounted depend.! ng on the specifications. 20 [0032] The terminals 21a to 21d of the l.erminal unit 20 are exposed from the £rosit surface 13 of the pack body 10, that is, from the surface of the top cover 31, to the outside. Therefore, the front surface .13 of the pack, body 1-0. {-the surface of the Lap cover 31} forms 25 the terminal surface 101 of the battery pack 300. [0033] Hereinafter, the battery p^ck 100 of this SP344201WQOQ 14 embodiment will be described in detail. [0034] (Terminal arrangement) In the battery pack 100 of this embodiment, the terminal unit 20 includes the positive terminal 21a, b the negative terminal 21b, the temperature detection terminal 21c, and the control terminal 21d that are arranged along the Z-axis di recti on on the terminal surface 101 {the front surface 13 of the pack body 10). The negative terminal 21b j.t> arranged between the 10 temperal.me detection terminal 21c and the control terminal 2Id and closer to the control terminal 2Id than the temperature detecti on termi rial 21c. [0035] Fig. 7 is an enlarged view of the Fig. 2, showing the terminal surface 103. The terminals of the 15 terminal unit 20 are linearly arranged in the order ot the control terminal 2Id, the negative terminal 21b, the temperature detection terminal 21c, and the positive terminal 21a from the left-hand side of Fig. 7 along the Z-axis di rection. The negative terminal 21b 20 3.rr^.T\qc6. between the control terminal 21d and the temperature detection termi nal 21c La arranged cluser to the control terminal 21d than the temperature detection terminal 21c as shown in Fig, 1. i00."56] 11. should be-noted that in Fig. 1, tor the 2S sake of convenience, the control terminal 2Id i.s denoted by a symbol "C", the negative terminal 21b by a SP3442G1WO00 15 symbol ,T-M, the temperature detection terminal 2lc by a symbol "T"r and the positive terminal 21a by a symbol "+", but those symbols may riot be Imparted to those terminals in reality. 5 [0037] Ki g. 8 is a front view «chematically showing an electronic apparatus 200 to which the battery pack ] 00 is mounted. A]though a digital still camera is applied as the electronic apparatus 200, loi example, other compact electronic apparatuses such as a digital 10 video camera, a mobile phone, and a pen table game deuiire are applicable. Further, examples of the elect run: c apparatus 200 "i nclurie a charger for recharging the battery pack. 100, [0038] A device body 201 of the electronic apparatus lib 200 includes a lens barrel unit 202 and a battery mounting unit 203. The battery mounting unit 203 is provided into the device body 201 , Though not shown in the figure, the device body 201 has an opening and a lid capab]c of closing the openi ng on the bottom 20 surface thereof. The battery pack 300 is inserted into the opening from the terminal ."Jiirface 101 side to be mounted to the battery mounting unit 203- The battery mounting unit 203 5 ncorporates a positive terminal contact 3a, a negative terminal contact .3b, a 25 temperature detection l.ej.minal contact 3c, and a control terminal contact 3d that arc arranged to be SP344201NO0Q ]6 connected to the posi tive terminal 21a, the negative terminal 21b, the temperature detection terminal 21c, and the control terminal 216 of the battery pack 100, respectively. Those contacts 3a to 3d arc arranged so 5 as to correspond to the arrangement order and arrangement intervals of the terminals 31a to 21d of the battery pack 100- It should be noted that the control terminal contact 3d may be omitted depending on the specifications of the electronic apparatus 200. ID [0039] A] ong with the downsizing of e] ectroEiic apparatuses in recent years, battery packs used in those e] eiil.ion.ic apparatuses am also being downsized. On the other hand, due to the downsizing of electronic apparatuses and battery packs, arrangement intervals lb between contacts provided to battery mounting units of the electronic apparatuses are also reduced. Therefore, when a battery pack is not correct]y inserted into an electronic apparatus or the shape of contacts is defective, a proper mounting state of the battery pack 20 and the electronic apparatus cannot be ensured, which causes a possibility that the electronic apparatus is not allowed to be correctly operated. f 0040] Foi exainpl o, in the c:ase where a control terminal, a negative terminal, .a temperature detection 75 terminal, and a positive terminal are arranged in the stated order on a terminal surface of a battery pack, SP344201WOG0 37 when the battery pack .3 s not correctly inserted into an electronic apparatus or the shape of contacts of the electronic apparatus i 5 defective, there is a possibility that a negative terminal contact of Lhe 5 electronic apparatus cornea into contact with the temperature detection terminal or the control terminal of the bal.Lery pack. Further, when a failure caused when the negative terminal contact comes into contact with the temperature detection terminal i s compared 10 with a failure caused when the negative terminal contact comes into contact with the control terminal, the fnrmei causes a largei adverse influence from the perspective of ensuring of a normal operai-i on of the J electronic apparatus. IS [0041] In this regard, in the battery pack 100 ol this embodiment, the negative terminal 21b arranged between the temperature detection terminal 21c and the control terminal 2Id is arranged closer to the control terminal 2 Id than the temperature detection terminal 20 21c. Accordingly, the negative tcrminal contact 3b of the electronic apparatus is prevented from being erroneously connected to the temperature deLed.ion terminal 21c, and a si ate where the negative terminal contact 3b is-properly connected to lhe negative 25 terminal 21b can be stably ensured. As a result, a normal operation of the electroni c apparatus 200 can be SP344201WOOO IS ensured. [0042] The top cover 3il that forma the terminal surface 101 includes *± plurality of terminal windows 42 (42a, 42b, 42c, 42d) U'^gs- 6 and 7) . The terminal 5 wicidow 42a exposes the positive tormina J 21a to the outsJ de. The term-inal wi nd«w 4 2d exposes the control terminal 21d to the outside. The terminal w j itdtjw 42b j K provided ;;n a.s l.o be apart from the terminal window 42d by a first gap (CI), and exposes the negative terminal ] 0 21b l.o the outside. The terminal window 42c is provided so as to be apart from the terminal window 42b by a second gap {G2) larger than the first gap (ftl) , ^inri exposes the temperature deteel-ion terminal 21c to the outside. As a result, predetermined term3 nal intervals 15 between the terminals- 21a t.o 2ld can be ensured, and a proper mounting state of the battery pack 100 with resper:!. to the battery rnounting unit 203 can be more stably ensured, [0043] In thiw embodiment, a longitudinal dimension 20 of the terminals 21a to 2.Id a3 ong the X-axis direction, which are exposed from the terminal surface 101, is 3 mm, A lateral diroensi on of the positive terminal 2la along the Z-axis direction is 4.25 mm, that of the negative terminal- 21b is 3,8-5 IIIIH, that ot-the 2b temperature detection terminal 21 c and the c-ontrol termi nal 2Id J s 2.7 mm, further, the gap (Gl) between SP344201WO00 19 the negative terminal 21b and the control term J nal 23 d is 1.2 mm, and the: gap (G2) between the negative terminal 21b and the temperature detection terminal 21c is 1.65 mm. 5 |0044] In this embodiment, the teuipeial.ure detection terminal 21c is arranged between the negative terminal 21b and the positive termi nal 21a. Since this arrangement increases a distance between the positive terminal 21a and the negative terminal 21b, electrical 10 insulation between those terminals 21a and 21b can be enhanced. [0045] Further, si nee the above-mentioned arrangement allows the positive terminal 21a to be di spoked at the outermost position, a degree of freedom 15 on the shape and size o± the positive terminal 21a is enhanced. In this embodiment, the positive terminal 21 ?* is formed to have an area larger than that of the negative terminal 2lb. Accordingly, a degree of freedom on the arrangement of the contact 3a of the electronic 20 apparatus is enhanced, and a proper mounting state of the battery pack 100 can be ensured. [004 6] (Concave portion) The I.eiJTiJnal surface 101 of the bal.tejy panic 100 includes a first concave portion 43 and a second 25 concave portion 4 4. The f i r^l. and second concave portions 43 and 44 are provided at positions SP3442D1WOG0 20 substantially symmetric with respect to the center line Pi {Fig. 2) on the terminal surface 101, e.g., at t.wo ends of the terminal surface 101 that arc opposed to each other in the Z-axi s di ret:Lion. 5 [0047] In this embodiment, the first concave portion 43 is provided close to the right side surface IS of the pack, body 10, and the second concave portion 44 is provided close to the left side surface 16 of the pack body ] 0, The f i rst and second concave portions 43 and 10 44 are arranged on Lhe terminal surface 101 and closer to the lower surface 12 than the upper surface 11 of the pack body 10, In this embodiment, the fi rst and second concave portions 43 and 34 are arranged closer to the lower surface 12 of the pack body 10 than the J 5 ceni.ei line P2 (Fig. 2} on Lhe terminal surface 101. [0048] As shown in Fig, 1, the first and seoond concave portions 43 and 44 have a width direction in the 2-axi u di rcction, a height di rection in the Y-axis direction, and a depth direction in the X-axis 20 di recti on. 'J'he first and second concave portions <13 and 44 each have a planar portion 45a parallel to a Ytf plane, a planar portion 4 5b parallel to an XY plane, and a planar portion 4E>c parallel to an Xtt plane. The first- and Keoond concave p01 Lions 43 and 44 are each 25 formed to have a cutout whose shape obl.ained when viewed from Lhe leririinal .surface 101 side is 5P3442Q1&JO00 23 substantially triangular {also referred to as substantially fan-like) by the planar portion 45a., the planar portion 45b, and the .-side surface lb (side surface 16). 5 [0049] Two protrusions are formed at the bottom portion of the battery mounting unit 203 HO as l.o correspond to the posi t.i mis at which the first and second concave portions 43 and 44 are formed. Fig. 9 b a cross-sectional view o£ a main part of the electronic 10 apparatus, showinq a relationship beLween the battery mounting unit 203 and the battery pack 100 that has been properly inserted into l.he battery amounting unit 203. [00501 The contacts 3a to 13c and two protrusions 204 lb are provided at a bottom portion ?03a of the bal.l.eiy mounting unit 203 thai, is opposed to the terminal surface 101 of the battery pack 100. The coriLacLs 3a to 3u are aitanged so as to be opposed to the terminals 21a to 216 on the terminal surface 101. The two 20 protrusions 204 are arranged so as to correspond to the pos-iLions at. which J.he concave portions 43 and 44 are iorined, Fig, 9 shows the positive term3 rial contact 3a cormeol.ed to i.he positive f^imitial 21a o± the battery .pack. 100 and one of -the protrusions 204 1.ha.t Is .opposed 25 to the tirst concave portion 43. [0051] When the battery pack 100 5s inserted inlo SP3442Q]WO0Q 22 the electronic apparatus 200 in a proper posture, the protrusions 204 enter regions where the first and second concave portions 43 and 44 are formed, which allows connection between the termina3s 21a l.o 21d of S the battery pack 100 and the contacts 3a to 3d of the battery mounting unit 203, In this state, a protruding length, shape, size, and l.he like of the protrusions 204 may be sot such that the protrusions 204 do not come into contact with any surface of the termina.l 10 surface .10.1 . f00?)2] On the other hand, when the battery pack. 100 is mounted l.o the battery mounting unit 203 with the l surfaces thereof turned upside down, the protrus iorwg 204 cosne n ni.o contact with regions on the terminal lb surface 101, in which the first and second concave portions 4'3 and 43 are not formed, and restrict further insertion of the battery pack 100 from those contacting positions. Accordingly, a function of preventing the battery pack 100 from being erroneously inserted into 20 the electronic apparatus 200 can be obta.i ned, and a IJUPI is allowed l.o zeoogniiie that the battery pack 100 is not inserted into the electron.! c apparatus 200 i n a correct posture, farther, when the insertion of the battery pack. 100 is restricted due to the proi.nis 'ons 25 204 and the terminal surface 101 that are brought into contact with each other, a protrudi ng 1 eng! h of i.he. SP3442U1WOOO 23 protrusions 204 or contacts 3a to 3d may be set such that the terminals 2Ja to 23d do not. come into contacL with the contacts 3a to 3d. [0053] In tb.i s embodiment, as shown in Fig. 7, the 5 terminals 2la to 2Id of the terminal UDJt ?0 are arranged on the l.ermina] si?dace 101 and closer to the right side surface 15 than the left si de surface 16- Aceerdingly, the symmetry of the terminals 2] a. to 2 Id with respect to the center J-ine PI parallel to the X- ] 0 axis direction on the terminal surface J 0J is lost, which can hinder an electrical connection between l.he terminal unit 20 and the electroni c apparatus 700 at the time bf erroneous insert-ion. [0054] In this case, the first concave portion 43 ] 5 has a width dimension ] argei than tha:t of the second concave portion 44 in the S-axis direction. .Specifically, as shown in Fig. 1, a width dimension Wl of the first concave portion A3 is set to be larger than a width dimension W2 of the second concave portion 20 44. [0055] Accordingly, at the time of the in Her (.ion of the bal.l.ery pack 100 into the battery mounting unit 203 in a proper posture, the first concave portion 43 en the side on which the ternii iidis 2la to 21d are arranged 25 can be prevented from interfering with the pj.oE.rus ion 204, and a stable eteclrical connection between the SP344201WO00 24 terminals 21a to 2Id of the terminal unit 20 and the contacts 3a to 3d of the battery mounting unit 203 can be ensured. Further, the region of the first concave portion 43 is formed to have a relatively large area, b and the interference with the protrusion 204 can thus be suppressed, even when dust is accumulated at the corner of the first concave portion 43 and the widLh of the bottom surface of the cutout region become smaller than the width Wl- As a result., a stable electrical 10 connection between the terminal unit 20 and the battery mounting unit 203 is ensured. [0056] The size of the width dimensions Wl and W2 of the first find second comjave portions 43 and 44 is not particularly limited. In this embod-LmenL, the width 15 dimension Wl is set Lo 3.8b mm, and the width dimension W2 is set to 3.5 mm. Jn addition, a height dimension of the first and second concave portions 43 and 44 along the y-axj s di rect"ion i s set to, for example, 1. H rum. L00b7j Additionally, the terminals 21a to 21d of the 20 tenni rial unit 20 are arranged on the terminal surface 101 and closer to the upper surface 11 than the lower surface 12. In this embodiment, the terminals 2.1 a to 2Id arc arranged on the terminal surface 101 and oloser to the upper surface 11 of the pack, body LO than the 25 center .line P? (J|Lig. 2} on the terminal surface 101. [0058] Accordingly, the symmetry of the terminal 5P34420IWO0D 7 5 unit 20 with respect to the center line P2 is lost, which t^n hinder an electrical connection between the terminals 21a to 2ld and the contacts 3a to 3d at. the time of erroneous insertion of the battery pack 100 5 into the battery mounting unit 203. Further, regions where the first and second concave portions 43 and 44 arc to bo formed are easily ensured. [0059] On the other hand, the formation of (.he first and second concave portions 43 and 4 4 allows the 10 strength of the terminal surface 101 to be enhanced. ji'igs. 10 and 31 are a perspective view and a plan view showing the structure of the inner surface of the Lop cuuei 31. As described above, the top c^Vver 31 is formed of an injection molded body of a synthetic resin lb material. The top cover 33 includes a peripheral wall portion 310 to be fitted into the front end of the cell unit 30, a pair of reference pins 311 for positioning of the wiling substrate 21, and a pair of fixing claws 312 that fix the wiring substrate 21, in addition to 20 the l.eiminal windows 42a to 42d and the concave portions 43 and 44. LOO60j The fi rst and second concave portions 43 and 44 are formed by depressing predetermined portions of -the top cover 31 in the Y-axis direction, and bumps 313 25 and 314are formed on the inner surface of the top cover 31 at positions corresponding to the positions SP344201WOQ0 26 where the first and second concave portions ^3 and 44 are formed. The pair of reference pins 311 are formed so aH to be opposed to each other in the Z-axis direction and determines a position where the wiring 5 substrate 21 is to he attached to the inner surface of the top cover 31. The; pair of fixing claws 312 are formed on the inner surface of the peripheral wall portion 3J 0 so as to be opposed to each other in the Xaxis direction and engaged with both edges of the 10 wiri ng substrate 21 positioned by the pa i r of L e£e*ein.:e pins 311. [00G1J On the other hand, the wiring substrate 21 includes a pair of through-holes 201a, through wh^lch the pair of reference pins 331 pass, and cutouts 201b IS and 20Jc formed to avoid I.he interference with the; bumps 313 and 314. Various circuit devices such as a thermi stor, a del errnination circuit, and a protect:on circuit arc mounted onto the front side or rear side of the w: rj ng subsi.raLe 21. 20 [0062] In the top cover 31 configured as described above, the bumps 313 and 33 4 each function as a rib tor enhancing the rigidity of the entire top cover 31 and improving the strength thereof, wi t-h this configuration, the terminal surface Ifrl -is protected against the drop 25 impact of the battery pack 100, and the wiring substrate 21 and various devices mounted thereonto can SP344201WO00 27 be prevented fiom being broken. In addition, the pair of reference pins 311 and the fixing claws 312 allow highly accurate positioning of the wiring substrate 21 with respect to the top cover 31- Ei [0063] Furthermore, since the width dimension Wl of the first concave portion 43 is formed to be larger than the width dimension W2 of the second concave portion 44, the Hgidity of the end o± the top cover 31 on the right side surface 15 side, on which the 10 terminals ?la to 716 of the terminal unit 20 are arranged, is enhanced. Accordingly, the terminals 21a to 21d can be effectively protected against the drop impact. [0064] Moreover, in the top cover 3] of thi s lb embodiment, both side surfaces opposed to each other in the width direction [Z-axis direction) are arc-shaped surfaces, and the first and second concave portions 43 and 44 art formed in the arc-shaped regions of the both side surfaces of the lop cover 31 [Fig. 32} . 20 [0065] Fig. 12 is a plan view showing the front suzface of the top cover 31. The both side surfaces of the top cover 3S, which arc opposed to each other in the width direction, are each formed by a part of a ._..•.. peripheral surface of a cylinder with a predetermined 25 Radius, and when viewed from the front surface of the top cover 31, the first and second concave portions 43 SP344201WOOD and 44 are each provided within a region ot a circumference of a circle y is 42-64 mm {±0.16 M J , and Dz is 29.85 mm :t 0,15 mm. [00751 In recent years, the battery pack has been 20 demanded for thinning and downsizing while maintaining a necessary battery capacity. However, it is difficult for a thin battery pack to have a large battely capacity- When the length dimension and width dimension -of a thin battery pack arc increased, the 3 nl.erfej.ence 25 with a structural portion of a lens barrel or the like is caused, win ch makes it diffi cult to downside a SP344201WOGQ 34 camera body. On the other hand, when the J.hi^knefts diroensi on of the battery pack is increased, the recent demand for the thinning of the electronic apparatus is not met- 5 [0076] In this regard, in the bal.t.ery pack 100 of this embodiment, the dimensions of the respective portions of the battery pack 100 are set to the abovementioned dimensions in order to ensure the th i nning and a necessary battery capacity. The battery pack 100 10 with such a size is suitable for, for examp]e, a battery pack of an imaging apparatus for capturing still images or moving images. [0077] (Shape of terminal window) -) In the battery pack 3 00 of this embodiment, the 15 top cover 31 includes a plurality of rectangular terminal windows %?, from which the terminals 21a to 21d of the terminal unit 20 are exposed to the outside. 3f a cover attached to an end surface of a battery pack is provided with an opening .1 j ke a terminal w Endow, 20 the rigidity of l.he cover is generally reduced, and the cover is easily broken when an external force such as a drop impact is received, for example. In this regard, to enhance the dm ability of the top cover 31 against the. drop impact and the like, in 25 this embodiment, one terminal window of the plurality of the terminal windows 42 that is located at the SP344201WO00 35 outermost position in the Z-axis direction has one corner portion formed in a curvature radius larger than that of the other corner portions of the terminal window. 5 [0G78] Kig. 1H ia ii plan view showing the shape of the terminal windows 42 (42a to 426} of the top cover 31 - fii this embodiment, the terminal window 42a for the positive tcrmina.l 2 3a, wh.i ch is located at the outermost position in the Z-axis direction among the 10 plurality of terminaJ windows 42a to 32d, has a corner portion Cl formed in a curvature radius larger than that nf the other corner portions CO. The other corner portions other than the corner porti on CI of the ,1 terminal window 42a, and corner portions of the other lb terminal windows 42b to 42d other than the terminal window 42a are formed in a curvature radius equal to that of the corner portions CO. 100Vyj The terminal window 42a located at the outermost position of the top cover 31 in the width 20 direction is most susceptible to an external force such as a drop impact applied to the battery pack 100, and the top cover 3 3 is easily broken. !l n thJ H embodiment, si nee l.he corner portJ on CI having a curvature radius larger than, that- of the other corner portion^. CO is 25 provided at one portion of the terminal window 42a, the rigidity at the part of the corner portion CI can be SP344201WOOO 36 enhanced and the top cover 3} can be protected against the breakage. Further, the positive terminal 2 la exposed from the terminal window 42a. is also protected, J.OGBO] The corner portion Cl is a corner portion 5 provided at the position closest to any one of the upper surface 11, the lower surface H2, the front surface 3 3, the rear surface 14, the. right aide surface 15, and the left side surface 16 of the pack body 30, Accordingly, the breakage of the top cover 31 due to an 10 external force applied to any one of the surfaces can be .suppressed. In th"i s embodiment, the corner portion Cl is provided at the position closeHt to the upper surface 11 or the right side surface 15 of the pack body 10, lb {GOBI] The corner portion Cl is a corner portion provided a I- the position closest i_o any one of the right side surface 15 and the left side surface 16 of the pack body 10. Accordingly, the breakage of the top cover 3J due to an external force applied to any one of 20 the surfaces can be suppressed. In this embodiment, the corner portion Cl is provided at the position close^l. to the right side surface lb of the pack, body 10, 10032] The top cover 3.1 includes fonr corner - -portions Ml, M2, M3f and MA. In this embodiment, the _. 25 corner porl.Jon Cl is provided at the position closes!. to the corner portion Ml of the four corner portions Ml SP344201WOOD to M4 , Accordingly, the terminal window 42a can be effectively protected against an external force applied to the corner portion Ml. The corner portion cl is not limited to the example in which ii- is provided at the b above-mentioned position, For example, the corner portion Cl may be provided at a corner portion of the terminal window 42a close to the corner portion M2 or a corner portion of the terminal window 42rf for the control terminal 2Id, close to the corner portion M3 or 10 K4, iOOH3] Kurther, in this embodiment, the plurality of terminal windows 42a l.o 42d arc arranged close to the upper surface 11 of the battery pack 100. In this embodiment, since the eorncr portion Cl of the terminal 15 window 42a close to the corner portion Ml is formed in a curvature radius larger than that of the other corner portions CO, even if the corner portion Ml and the terminal wi ndow 42a become cJ ose to each other, the concentration of a stress generated therebetween can be 20 reduced, and the top cover 31 can be protected against a breakage. [0084] In addition, in this embodiment, the plurality of terminal windows 42a to 42d are arranqed close to the right side surface 1!J OL the battery pack 25 100. Also i n such a case, the concentration of a stress generated between the corner portion Ml and the SP3442Q1WO00 38 terminal window 42a can be reduced, and the breakage of the top cover 33 , such as a crack of the terminal suiface 101, can be hindered. [0085] [Modified example] 5 Hereinafter, the embodiment if the present techno]ogy has been described, but the present technology is not limited to the embodiment described above- As a matter of course, the present technology inay be variously modified without departing from the 10 g.i st of the present technology. LQ086] FOE example, in the embodiment described above, the pack, body 10 is constituted of a combination of the ceJIt unit 30, the top covet 31, and the bottom c«ver 32. Though not limited thereto, the pack body may IS be constituted of a single component. The right side surface 15 and the left side surface lf> are each formed by an arc-shaped surface bulging outward. Though not ]imited thereto, the right side surface lb and the left side surface lf> may be 20 formed in a substantially planar shape partially including an arc-shaped surface or only a substantially planar shape- L00B7| Further, in the embodiment described above, the structural example has been described, in wb?ch the 2h" terminal unit 20 is arranged between the cell unit 30 and the top r.uv^.r 31, and the terminals 21 D to ?ld of SP344201WO00 39 Lhe terminal unit 20 are exposed to the outside via the terminal windows 42 of the top cover 31. However, the i.erminals of the terminal unit may be directly provided to the front surface of the pack body, 5 The terminal unit 20 has the conf i gyration in whj ch the control terminal, the negative terminal, the temperature detection terminal; and the positive termi rial are arranged in the stated order along the Z axis, but it is not limited thereto. The terminal unit JO ?0 may have a configuration in which the controJ terminal, the positive tcrm-inalP the temperature detection terminal, and the negative terminal are arranged in the .sf.al ed order along the Z axis. LOOSS] The terminals 20a to 20d of the terminal unit 15 20 are ananged close Lo the upper surface 1 1 of the battery pack 300. However, the terminals 20a to 20d may be arrange at substantially the center of the terminal surface 101 or arranged d o s e to Lhe lower surface 12. In this case, the first and second concave portions 43 20 and 44 may be arranged i-loa-e to upper surface 11 of the battery pack 100. [00891. Further, the Leiminals 20a to 20d of the terminal unit 20 are arranged close to the rtght side surface lb of the. battery pack 100, but it may be 2b arranged close to the loft s"ide surface 16. In this case, out of the lir^l. and second concave portions 43 SP344P01WO0G 40 and 44, the second concave portion 44 provided close to the left side surface 16 may be formed .in a width dimension larger l.han I.hat. of the first concave portion 43, 5 [009(1] It should be noted that the first and second concave portions 43 and 44 are provided on the terminal surface 101 for the purpose of preventing erroneous insertion and may be omitted depending on the specifications. Similarly, the locking port5 on SI 10 forced on the rt>.ar surface 14 of the battery pack 100 may be onultted depending on the specifications. The top cover 31 has the configuration including J the pair of reference pins 311 for positioning of the wiring substrate 21 and the pair of fixing claws 312 IS for fi xi ng the wi ring substrate 21, but it is not limited thereto. The top cover 31 may not bo provided with the reference pins 311 and the fixing claws 312. In such a case, the wiring substrate ?l has a confj guration fiee from I.he pair of through-holes 201a 20 through which the pair of reference pi.DM 311 pass. L()09l] It should be noted that the present technology may have the following con fig Lira Lions . {1} A battery pack., including: a pack body having a first majn KUifa.ee and <± 2b second main surface that are opposed to each other in a first axis direction, a first end snrfacre and a seoond SP3442QIWOQ0 41 end surface that are opposed to each other in a second axi 5 d-i recti on orthogonal - to |.he first axis direction; and a first side surface and a second side surface thaiare opposed to each other in a third axis direction b orthogonal to the first axis direction and l.he second nxis direction; and a pluraJity of terminals including a positive terminal, a negative terminal, a temperature detection term.i nal, and a control t.erminal that are arranged on 10 the first end surface along the third axis direction, the negative [.errni nal be5 ng arranged between the temperature detection tormina] and the conl.rol terminal and closed to the control terminal than the temperature detection terminal, 15 {2J The battery pack according to (1) above, in whi ch the first end surface includes a first terminal window to expose the control terminal to an outside, ?Q a second terminal window that is provided apart from the first terminal window by a first gap and exposes the negative terminal to the outside, a third terminal window thai, is provided - - apart from the second terminal window by a second gap 25 .1 arger than l.he f~i rst gap and exposes the temperature detection terminal to the outside, and SP3442Q1WOO0 a fourth Urminal window to expose the positive terminal to the outside, (3) The battery pack according to (1) or (2) above, in which 5 the temperaLure detection terminal is arranged between the negative terminal and the positive terming] , {4) The battery pack according to (3), in which the pos.i ti ve terminal has an area larger than that of the negative terminal. 30 (5) The battery pack according to any one of (1} to [4) above, in which the first end surface includes a first concave portion provided close tt) the first side surface and a second concave po* Lion provided close to the second 15 side surface, and the first concave portion and the second concave portion are arranged on the fjrst end surfdce and closer to the second main surface than the first main surface. 20 (6) The battery pack according to (5) above, in which the plurality of terminals are arranged on the f Li Hi. end surface and nr.l osei l.o the first side surface than the second side surface. 2b (7) The battery pack according to (5) above, in whi ch SP344201WOOO 43 the first concave portion has a width dimensJon larger than that of the second concave portion in the third axis direction, (8) The battery pack according to (7), in which the first concave portion and the second concave portion each have a height dimension of 1.8 mm or more along the second axi 5 di rection. (9) The battery pack, according to any one of {1) to {8) above, in which the plurality of terminals are arranged on the first end surface and closer to the first main surface than the second main surface, (10] The battery pack according to 3(9) above, in which the second end surlace includes a locking portion to he locked Lo an electronic apparatus, and the locking portion is arranged on the second end .surface and closet !.o the second main surface than the first main surface, [GG92] Further, the present technology may also have the fol ] owi ng conf i gi.irat.5 ons - {!) A battery pack, including: a first main surface; a second main surf ace-opposed to the first ma.in .surface in a rirst axis dJ reel.ion; a first end surface provided between the first sp3^420iwoan main surface and the second main surface and including a plurality of terminals including a positive terminal, a negative terminal, a temperature detection terminal, and a control terminal, the plurality of terminals 5 being arranged closer to the first anain surfac-e than the second main surface; a second end surface opposed to the first end surface in a second ax.i s direction orthogonal to the first ax.is direction, and including a locking portion 10 that is configured l.o be locked to a battery pack mounting device and arranged closer to the second main surface than the first main surface; a first s-ide surface provided between the first J main surface and the second main surface; and lb a second side surface opposed to the first side surface in a third axis direction orthogonal to the first axis direi:l.i on and the second a^is di recti on, {?.) The battery pack, according to (1) above, in which. 20 the first end surface includes a first concave portion provided close to the first side surface and a second coiic:ave portion provided close to the second side surface, and the firsts concave portion and the second concave 25 portion, arc arranged on the first end surface and closer to the second main surface than the first main SP344201WO00 45 s u r f a c e . (3) The battery pack according to {2) above, in which the plurality of terminals a£e arranged on the 5 first end surface and closer to the first side surface than the second Hide surface. {4} The battery pack according l.o {'i) above, in whJ ch the first concave porta on has a first width HO dimension in the third axis direction, and the second concave portion haw a second width dimension snsaller than that of thi? TirHL width dimension .i n the l;hi rrf axis direction. [b) The battery pack accord.i ng 1." (4) above, in 15 whj ch the first concave portion and the second concave portion each have a height dimension of 1.8 mm or more along the second ax:s di recti on. (6) The battery pack, according to any one of (1) 20 to (5) above, in whi ch the plurality of terminals are arranged on the first end HUT face and closer to the first side surface than the second side surface. - {7} The baU-ery pHt;k. according to {6) above, in 2b which the 1 tacking porl.icn is arranged on the second end SP344201WO00 46 surface and closer to the first side surface than the second side surface. (8) The battery pack according to (71 above, in which the locking portion is arranged closer to the first side surface than a Lerminal of the plurality of tcrrosna]s, the terminal being located closer to the first side surface. [0093] Furl.her, the present technology trsay also have the following configurations. (1) A battery pack for an .imaging apparatus that captures at least one of a still image and a moving image, the battery pack Including: a first main surface; a second main surldce opposed to the first main surface Jn a f 3 rst axis direction and having a distance* of 9 mm ± 2 mm from the first main surface; n Ii] si. end surface provi ded bei.weeii l.lit- f i i: sixain surface and the second main surface; a second end surface opposed l.o the first end surface 5 n a second axis direction orthogonal to the first axis direction and having a distance of A'i inrif ± 2 3nm from the first end surface; a first side HUrl-ace provided, be.tween the first man n surface and the second main surface; and a second side surface opposed to the first side SP344201WO00 47 surface in a third axis di recti on o r t hoy oris 1 to the? first axis direction and the second axis direction and having a distance of 30 mm + 2 mm from i.he JTirsL side surface. 5 (2) The battery pack according l_o (1) above, in which the first end surface includes a plurality or terminals including a positive tenni na], a negaU ve terminal, a tempera Lure detection terminal, and a 10 control terminal. (3) The hal.l.ery pack according to [2) above, in which the first end surface includes a first concave portion provided close to the firsl. side surface and a lb second concave portion provided close to the second side sutface, and the first concave portion and the second concave portion ale arranged on the first end surface and closer to the second main surface than Lhe first main 2D surface. f4} The batVery pack according to (3) above, in which the plurality of terminals are arranged on the first end surface and closer to the first niai n surface 25 than lhe second main surface- [5} The battery pack according to {4.} above, in $P3442Q1WOGO 48 which the second t?nd surface includes a lockiing portion configured to be locked to a ball-cry pack mounting device, and t> the locking portion is arranged on the second end Hurface and closer to the second main .surface than the first majn surface. 10094] Further, the present technology may also have the following configure Lions. 10 [1} A battery pack, including: a pack body having a first main surface? and a second main .surface that are opposed to each other tn a first axis direction, 15 a first end surface and a fecund end surface that aie opposed to each other in a second axis direction orthogonal to the first axis direction, and a firsL side surface and a second s itk? surface that aro opposed to each nl.her in a third axis 20 direction orthogonal to the first axi s di recl.ion and the second axis di recti on; and a top cover attached to the first end surface and including a plurality of rectangular terminal windows to expose a^.plurality ot terminals to an. outside, a 25 terminal wJ ndow i ncl uded in the plurality of terminal windows and located at an outermost position in the SP3442G1WQ0Q third axis direction having a corner portion formed in a curvature radius larger than that of the other corner portions of the termi rial window. {2) The battery pack, according to [1) above, in 5 which the top cover includes four corner portions, and the corner portion is a corner porti on provided ai. a position closest to any one; of the four corner portions of the top cover. 10 (3) The battery pack according to (1) above, in whi r:h the cornier portion is a corner portion provided *il- ,? a position closest to any one of the first nsain surface, the second m^in surfijee, the first end 5\iTf&ci;t the 15 second end surface, the first side surface, and the second side surface of the pack. body. (4) The battery pack according to (1) above, in which the corner portion is a corner portion provided at ?Q a position closest to one of the first side surface and the second side surface of the pack body. {b} The battery pack according to any one o± (1) to {4) above, in -rality of terminal -windows are arranged 2b closer to the first main. surface than the second main surface. bO (6) The battery pack according to any one of (1} to (5) above, in which the plurality of terminal windows are srr&nged closer to the first side surface than the second side 5 surface. Dcscri pt-i on of Symbols L0095] 10 pack body 20 terminal unit 21a positive tenni rial J 0 2lb negative terminal 21c temperature detection terminal 2id control terminal 1 42, 42a to 42d terminal window 43 first concave portion 15 4 4 .second concave portion 51 lockinq portion 100 bdLLety pack J 01 terminal surface 200, 210 electronic apparatus Claims A battery pack, comprising: 1. pack body having a f-irsl. main surface and a seconcj main surface that are opposed to each other in a first ijxis direction, a first end surface and a second end surface that are opposed to e^ch other in a second axi.i direction orthogonal to the first axis direction, and a f i rsl. side surface and a second side surface Lhat ace opposed to each other in a thi rd axis direction orthogonal Lo the first axis direction and the second axis direction; and