Art
[1]
The present invention relates to a battery pack and vehicle including the same and a battery module, more particularly, to a battery pack and vehicle comprising the same and the battery module is improved stability by preventing overcharging of the battery module.
[2]
This application claims priority from Korea Application No. 10-2017-0065459, filed on May 26, dated 2017, and everything about him is hereby incorporated into this application by reference.
[3]
BACKGROUND
[4]
In recent years the demand for portable electronic products such as laptops, video cameras, portable telephones are rapidly increasing, the electric vehicle, energy as storage batteries, robots, and the full-fledged development of satellites for, repeated charging and discharging a high-performance rechargeable batteries the research has been going on actively.
[5]
As of commercially available secondary batteries are nickel-cadmium batteries, nickel hydrogen batteries, there are nickel-zinc batteries, lithium secondary batteries, etc., of which the lithium secondary battery is not to the memory effect hardly occurs as compared to a secondary battery of nickel-based free and can be charged and discharged, self-discharge rate was very low, the spotlight as a high energy density advantages.
[6]
The lithium secondary battery mainly uses a lithium-based oxide and carbon materials as an anode active material and the negative active material. The lithium secondary battery is provided with such a positive electrode active material and the negative electrode active material are respectively coated with the positive electrode plate and the negative electrode plate with a separator disposed between the electrode assembly and the casing for sealing the housing with the electrode assembly and an electrolyte, that is, the battery case.
[7]
Generally, lithium secondary batteries according to the shape of the casing, the electrode assembly may be classified as a pouch-shaped secondary cell with a can type secondary battery with an electrode assembly that is embedded in a metal can be incorporated in a pouch of an aluminum laminate sheet.
[8]
In recent years, as well as small equipment such as portable electronic devices, has become a widely used secondary batteries in the middle- or large-sized devices, such as automobiles and electric power storage device. In particular, As-carbon energy is depleted gradually increasing interest in the environment has become a high-profile focus on the worldwide hybrid cars and electric vehicles, including the United States, Europe, Japan and Korea. The central part in such a hybrid vehicle or the electric vehicle is a battery pack for imparting a driving force to the motor vehicle. The hybrid vehicle or electric vehicle situation where users are increasingly significant increases in the sense that it is possible to obtain a driving force of the vehicle through the charging and discharging of the battery pack, the excellent fuel economy as compared to only a vehicle using the engine can be reduced or not emit pollutants to be. Then, the battery pack of such a hybrid vehicle or an electric vehicle includes a plurality of secondary batteries, the large number of these secondary batteries are improved capacity and the output being connected to one another in series and in parallel.
[9]
The secondary battery, but have excellent electrical properties, overcharge, over-discharge, the decomposition reaction of the high temperature exposure, electrical short, etc. components which are the active material of the battery under abnormal operating conditions, the electrolyte is induced heat and the gas is generated, This secondary there is the problem, a so-called swelling phenomenon of the battery expansion occurs. Swelling phenomenon may result in explosion or ignition of the secondary battery due to thermal runaway to accelerate this reaction.
[10]
Accordingly, the secondary battery block when the pressure rising current corresponding to the overcharge, over-discharge, PTC element (Positive Temperature Coefficient Element), a gas generator for protecting a circuit to block over-current when the current, the temperature is increased significantly increases when the resistance to cut off the current or the gas is provided with a safety system, such as a safety vent to exhaust.
[11]
In particular, the prior art has, when the inflated volume of the secondary battery consisting of a study of the electrical connection member to be unit cells by a physical change to the bar, even if the swelling phenomenon occurs to ensure the safety of the battery pack.
[12]
However, even with this electrical connection member it is difficult to reliably ensure the secondary cell when unit cells are expanded by more than a predetermined volume.
[13]
Further, the secondary battery's within the normal range bar, repeating a predetermined expansion and contraction even when the normal operating condition, non-abnormal operating conditions can also be the interruption time of the expansion work, there is a problem in reliability.
[14]
Detailed Description of the Invention
SUMMARY
[15]
The invention first by moving and contacting take applying the expansive force caused by the volume increase toward the first bus bar and second bus bar of the first battery cell, the first bus bar and a second bus to electrically connect what paragraph (Short) is generated by that, the breaking portion is broken formed first bus bar, there is provided a battery pack and vehicle including the same and a battery module capable of preventing the overcharge of the battery module.
[16]
An object of the present invention are not limited to the purposes mentioned above, and this is not mentioned will be understood by the other objects and advantages of the following description of the invention, it will be more clearly understood by an embodiment of the invention. Also, the objects and advantages of the invention will be readily appreciated that this can be realized by the means as claimed and combinations thereof.
[17]
Problem solving means
[18]
The technical problem the battery module according to the present invention for solving the first battery first electrode lead and electrically connected to the first bus bar, a second battery second electrode leads and electrically connected to the second bus bar of the cell in the cell, by receiving the expanding force due to the volume increase of the first battery cell is moved toward the first bus bar and the second bus bar to the contact bar and the first bus bar and the second bus, the first bus bar and the first short-circuit part and the first electrode lead and said second electrode lead, the first bus bar, the second bus bar and the receiving or supporting at least a part of the short circuit portion 2 bus to electrically connect the bar to generate a short circuit (Short) It is configured to include a cartridge.
[19]
Preferably, the short-circuit portion is added to jam formed to protrude at one end to the first bus bar, and the elastic member and the elastic force provided by the elastic force toward the second bus bar to generate engaging the locking hole of the cartridge of the elastic member It may include a slide bar to maintain the transformed state.
[20]
Preferably, said slide bar being a the locking portion and the engaging of the engaging groove off is that the expansion force applied to the engagement portion and restoring the deformed state of the elastic member, the elastic force from the elastic member to be deformed is restored the application received may be in contact as the first bus bar and to move toward the second bus bar to the first bus bar and the second bus.
[21]
Preferably, it said slide bar has a short-circuit terminal to the other terminal of the first bus bar and the second bus bar in contact with the first bus bar and the second electrical short circuit with the bus bar may be formed.
[22]
Preferably, the shorting terminal may be formed of a conductive material.
[23]
Preferably, the cartridge has a receiving space of a shape corresponding to the outer short-circuit portion is formed on the inner side can be accommodated inside the short-circuit portion.
[24]
Preferably, the receiving space may be formed so as to correspond to the volume of the elastic member according to the restored state of the elastic member.
[25]
Preferably, each of the cartridge-to-face contact and electrically connected to the first electrode leads and the first bus bar, each of at least the supporting part, face-to-face contact and electrically connected to the second electrode leads and the second bus bar you can support at least a portion.
[26]
Preferably, at least one of the first bus bar and the second bus bar may include a fracture that when said short-circuit occurs, the breaking off the electrical connection with the outside.
[27]
The battery pack according to the present invention may include the battery module.
[28]
Vehicles according to the present invention may include the battery module.
[29]
Effects of the Invention
[30]
According to the present invention, and is between the first bus bar and second bus bars on a first expansion force due to the volume increase of the battery cell so as to be electrically connected, and thereby by making a short circuit occurs, the first bus bar and second bus bar breaking at least a portion cutaway formed in any of the being, it is possible to prevent excessive charging of the battery module, it is possible to improve the stability of the battery module.
[31]
Brief Description of the Drawings
[32]
1 is a perspective view of a battery module according to an embodiment of the present invention.
[33]
Figure 2 is an exploded perspective view of a battery module according to an embodiment of the present invention.
[34]
Figure 3 is a view showing the upper surface prior to increasing the volume of the battery module in accordance with one embodiment of the present invention.
[35]
Figure 4 is a view showing only the first battery cell, the first bus bar, the second battery cell and the second bus bar of the battery module in accordance with one embodiment of the present invention.
[36]
5 is a diagram showing the side before breaking additional breakage of the battery module according to an embodiment of the present invention.
[37]
6 is a diagram showing the side after the breaking portion of the battery module in accordance with one embodiment of the present invention breaks.
[38]
7 is a view showing a short-side portion of the battery module in accordance with one embodiment of the present invention.
[39]
Figure 8 is a view showing the top surface after the increasing volume of the battery module in accordance with one embodiment of the present invention.
[40]
9 is an equivalent circuit previous overcharge of the battery module in accordance with one embodiment of the present invention.
[41]
10 is an equivalent circuit diagram of the immediately after the overcharge of the battery module in accordance with one embodiment of the present invention short-circuit portion moves.
[42]
11 is after overcharging of the battery module in accordance with one embodiment of the present invention short-circuit part moved by an equivalent circuit diagram after the breaking portion breaks.
[43]
12 is a view showing a cross-section of a cartridge of the battery module in accordance with one embodiment of the present invention.
[44]
Figure 13 is a perspective view of the inner cartridge in the battery module according to an embodiment of the present invention.
[45]
Mode for the Invention
[46]
The foregoing object, features and advantages will be able to easily carry out self technical features of the present invention one of ordinary skill in the art are described later in detail with reference to the accompanying drawings, accordingly. If the detailed description of the known art related to the invention In the following description of the present invention that are determined to unnecessarily obscure the subject matter of the present invention, and detailed description thereof will not be given. It will be described in the following, a preferred embodiment according to the present invention with reference to the accompanying drawings, for example, in detail. Like reference numerals in the drawings it is used to refer to same or similar elements.
[47]
Figure 1 is a perspective view of a battery module according to an embodiment of the present invention, Figure 2 is an exploded perspective view of a battery module according to an embodiment of the present invention, Figure 3 is the volume of the battery module in accordance with one embodiment of the present invention a view showing the upper surface before the increase.
[48]
1 to 3, the battery module according to an embodiment of the present invention may comprise a battery cell (110a, 110b), a bus bar (200a, 200b), the short circuit part 300 and cartridge 400, have.
[49]
Said battery cells (110a, 110b) may be provided with multiple pieces, each battery cell (110a, 110b) can be stacked side by side in the lateral direction.
[50]
Battery cells (110a, 110b) of the kind is not particularly limited and may be employed in the battery module according to the present invention, a variety of secondary batteries. For example, the battery cells (110a, 110b) may be composed of the lithium ion batteries, lithium polymer batteries, nickel cadmium batteries, nickel hydrogen batteries, nickel zinc batteries and so on. In particular, the battery cell (110a, 110b) may be a lithium secondary battery.
[51]
On the other hand, can be classified into a pouch-shaped, cylindrical, square, etc., depending on the type of packaging material are battery cells (110a, 110b). In particular, the battery cell (110a, 110b) of the battery module in accordance with the present invention may be a pouch-type secondary battery.
[52]
Battery cells (110a, 110b) in this case is implemented as a pouch-shaped secondary battery, as shown in Figure 2, each battery cell (110a, 110b) is located on the right side and a wide side with each other left, each battery cell (110a , 110b) may be configured such that the wide surfaces facing each other between. In this case, each battery cell (110a, 110b) may be provided with an electrode lead (120a, 120b) formed in a bent shape to be protruded toward the front.
[53]
Electrode leads (120a, 120b) may be of a positive electrode lead and negative electrode lead, a positive electrode lead is connected to the positive electrode plate of the electrode assembly, the negative electrode lead may be connected to the negative electrode plate of the electrode assembly.
[54]
On the other hand, the battery cells (110a, 110b) according to the invention can be of a first battery cell (110a) and a second battery cell (110b) located in the right position to the left. In this case, the first battery cell (110a) and a second battery cell (110b) of each electrode lead is an electrode lead (120a, 120b) of the other polarity may be arranged to face the same direction.
[55]
In more detail, as shown in Figure 2, the first battery cell (110a) is a positive electrode of claim and the first electrode lead (120a) may be arranged to face the front, the second battery cell (110b) is a negative electrode of claim second electrode leads (120b) may be disposed so as to face the front.
[56]
In addition, the first battery cell (110a) is a negative electrode of the second electrode leads (120b) that can be disposed to face the rear, the second battery cell (110b) is the anode of a first electrode lead (120a) facing the rear that can be placed.
[57]
In this case, the first the second the first electrode leads (120b) of the electrode leads (120b) and the second battery cell (110b) of the battery cell (110a) may be electrically connected.
[58]
On the other hand, the first electrode lead (120a) of the battery cell (110a) may be applied to the anode voltage being coupled to the first bus bar (200a) to be described later and electrically, from an external voltage source. In addition, the second being a battery cell (110b) the second electrode lead (120b) is a second bus bar (200b) and electrically connected to be described later, and may be applied to a cathode voltage from an external voltage source.
[59]
Here, the first bus bar (200a) may be mobile bus electrically connected to the first electrode lead (120a) of the first battery cell (110a) from the bus bar (200a, 200b) according to the present invention, the second bus bar (200b) may be mobile bus that the bus bar (200a, 200b) connected in the second lead electrode (120b) electrically of the second battery cell (110b) in accordance with the present invention.
[60]
Second electrode leads (120b) of the first battery cell (110a) the first electrode lead (120a) and the first bus bar (200a) connected to the structure and a second battery cell (110b) between the according to the invention from below and the 2 shall be described in detail for the connection structure between the bus bars (200b).
[61]
Figure 4 is a view showing only the first battery cell, the first bus bar, the second battery cell and the second bus bar of the battery module in accordance with one embodiment of the present invention.
[62]
First bus being also further reference to Figure 4, a first electrode lead (120a) of the battery cell (110a) is doedaga protrudes toward the front from the first battery cell (110a) bent in a substantially right angle towards the outside of the battery module facing the bar (200a) may be contacted.
[63]
In addition, the first electrode of the second battery cell (110b) the second electrode lead (120b) to the second battery cell doedaga protrudes toward the front outer That is, the first battery cell (110a) above the battery module from (110b) of toward the direction opposite the leads (120a) bent in a bending direction being substantially at right angles can be contacted face-to-face with the second bus bar (200b).
[64]
A first bus bar (200a) and a second bus bar (200b) may be a long plate in a vertical direction to form a plurality of bent shape at a right angle.
[65]
More specifically, the first bus bar (200a) is a first electrode lead (120a) to the first bent part (B1) bent perpendicularly toward the front doedaga face-to-face contact of the battery cell (110a), a first bent part (B1) be extended from the bent toward the inner side of the battery module, the second bent part (B2), a second bent part a third bent portion (B3) extending be bent toward the front of the battery module from, a third (B2) bent portions be extended from (B3) the fourth bent portion (B4), the fourth bent portion (B4) of the fifth bend (B5) bent toward the front of the battery module to be extended from the bent towards the outside of the battery module It may be provided.
[66]
Also, the second bus bar (200b) is a second battery cell (110b) the second electrode lead (120b) and the face-to-face contact doedaga bent perpendicularly toward the front sixth bent portion (B6), the sixth folding the portion (B6 ) seventh bend (B7) an elongated be bent toward the inner side of the battery module from the seventh bend (be extended from the B7) an eighth bend (B8 bent toward the front of the battery module), an eighth bend be extended from the (B8) be extended from the ninth bending the bent towards the outside of the battery module unit (B9), the ninth bending portion (B9) to be provided with a tenth bent part (B10) bent toward the front of the battery module can.
[67]
At this time, the first bus bar (200a) and a second bus bar (200b), respectively the second bent part (B2) and 7 by extending bent towards each other from the bent portion (B7), the separation distance decreases, the third bending by unit (B3) and the eighth bend is (B8) bent toward the front of the battery module from extending parallel to a distance can be maintained.
[68]
This eighth bend section (B8) is by proximal, below the short circuit part (300 in Fig. 3) of the first bus bar (200a), the third bent portion (B3) and a second bus bar (200b) of the through a slide bar (320 in Fig. 3) even if the width of the short-circuit terminal (322 in FIG. 3) formed at the other end to form short contacts at the same time as a first bus bar (200a) and a second bus bar (200b), a first bus bar ( 200a) and the second may be electrically shorted to bus bars (200b).
[69]
On the other hand, the first support grooves of the first electrode lead (120a) and the first bus bar (200a), the cartridge (Fig. 400 in Fig. 2) which will be described later in the electrically connected state face to face contact with the battery cells (110a) (FIG. 2 430) can be supported in part is inserted.
[70]
Further, the second support groove of the second electrode leads (120b) and a second bus bar (200b) from the cartridge (FIG. 400 in Fig. 2) which will be described later in the electrically connected state face to face contact of the battery cell (110b) (Fig. 2 430) can be supported in part is inserted.
[71]
It will be described later to the abovementioned cartridge (400 Fig. 2) to be described in detail.
[72]
Diagram 5 illustrates a side after the breaking portion of the battery module according to an exemplary embodiment of a diagram showing the side before the rupture of the battery module portion cutaway, Figure 6 is the invention according to one embodiment of the present invention rupture ego
[73]
5 and further reference to Figure 6, a first bus bar (200a) has a first bent portion (B1) and the second the interval of the bent part (B2) has a first bent portion (B1) and the second bend section ( the cross-sectional area than the outer section between a B2) may be formed with a narrow breaking portion (210a).
[74]
This, the breakable portion (210a) may increase the resistance value as between the narrow cross-sectional area than the outer section of the first bent portion (B1) and the second bent part (B2).
[75]
Thus, the breakable portion (210a) includes a first bus bar (200a) and a second bus bar (Fig. 3 of 200b) is electrically connected to the first bus bar (200a), a second bus bar (200b in FIG. 3) and when a short circuit is formed between an external voltage source, as shown in FIG. 6, the over-current to the first bus bar (200a) flows can be broken by generating the resistance heat of a high temperature.
[76]
Thereby, the battery module according to the present invention includes a first electrode leads of the first bus bar (200a) and the second bus bar is connected to an electrical (200b in FIG. 3) when a short circuit occurs, the first battery cell (110a) ( 120a) and a breaking the breakable portion (210a) of the first bus bar (200a) for electrically connecting between an external voltage source. Thus, it can be charged is interrupted.
[77]
That is, the battery module according to the invention is first the expansion force caused by increase due to the excessive charging volume of the battery module (110a) short-circuit part by applying (300 in Fig. 3) the first bus bar (200a) and a second bus bar a (200b in FIG. 3) can be electrically connected. Then, the battery module according to the present invention includes a first bus bar (200a) and the second bus bar breakable portion (210a) of the first bus bar (200a) due to the short-circuit current of the high current flowing in (200b in FIG. 3) is broken thereby, it is possible to stop charging to prevent the progression of overcharge of the battery module.
[78]
On the other hand, the breakable portion (210a) of the battery module in accordance with one embodiment of the present invention includes a first been described as being formed on the bus bar (200a), rupture of the battery module according to another embodiment of the present invention part the second bus bar, It can be formed, and a breaking unit of a battery module according to still another embodiment of the present invention may be formed on both the first bus bar and second bus bar.
[79]
Further, as the breakable portion (210a) are described above, as compared to adjacent regions, but also may be a width formed to be narrower, it can also not limited to this, if the adjacent melting point is formed of a lower metal than the area, and the other If the shape that can function as a fuse can be applied without restriction as the breakable portion (210a) of the present invention.
[80]
1 to 3 to be described for the above-mentioned short-circuit part (300).
[81]
Short-circuit part 300 is a first bus bar (200a) received is the expansion force due to the volume increase by moving toward the first bus bar (200a) and a second bus bar (200b) of the battery cell (110a) and the 2 by coming into contact with the bus bar (200b), it may cause a short circuit.
[82]
To this end, the short-circuit part 300 may include an elastic member 310 and the slide bar 320.
[83]
Elastic member 310 is a such, is transformed into a first bus bar (200a) and a reverse direction (a) of the second bus bar (200b) by the slide bar 320, as a first bus bar shown in Figure 3 ( to 200a) and a second bus bar (in the direction (b) toward the 200b) may provide an elastic force.
[84]
7 is a view showing a short-side portion of the battery module in accordance with one embodiment of the present invention.
[85]
Between With further reference to Figure 7, the elastic member 310 of the second plate (P2) in contact with one end of the first plate (P1) and a slide bar 320 which contacts the inside of the cartridge (400 in Fig. 3) a spring (S) it is possible to provide an elastic force in a formation by being inserted, toward the first bus bar (200a of FIG. 3) and a second bus bar (200b in FIG. 3) direction.
[86]
As described above, the slide bar 320 engagement hole (420 in FIG. 2) of the elastic member 310, the cartridge (400 in Fig. 3) where the engaging portion 321 formed to protrude at one end to an elastic force is generated will be described later from It is engaging the can maintain a deformed state of the elastic member 310.
[87]
That is, the state in which the slide bar 320 compresses the elastic member 320, the spring is inserted between the two plates in the opposite direction of the first bus bar (Fig. 200a of 3) and a second bus bar (200b in FIG. 3) engaging portion 321 is engaged in the engaging hole (420 in Fig. 2) it is possible to maintain the compression.
[88]
Figure 8 is a view showing the top surface after the increasing volume of the battery module in accordance with one embodiment of the present invention.
[89]
With further reference to Figure 8, once the engaging portion 321 formed on the slide bar 320 may be applied to the expansion force caused by the volume increase of the first battery cell (110a) due to the excessive charging of the battery modules. Accordingly, the engagement portion 321 may restore the deformed state of the elastic member 310 by being engaged with the engaging hole 420 by the force is released.
[90]
Then, the slide bar 320 includes a first bus to receive applying an elastic force from the elastic member 310 which is deformed to restore moving in the first bus bar (200a) and a direction toward the second bus bar (200b) (b) and a bar (200a) and a second bus bar (200b) may be contacted at the same time.
[91]
To this end, the slide bar 320 by the short-circuit terminal 322 to the other end is formed electrically connected to the first bus bar (200a) and a second bus bar (200b), a first bus bar (200a) and a second a short circuit in a circuit comprising a bus bar (200b) can be bangsaeng.
[92]
Here, the shorting terminal 322 can be formed of a conductive material.
[93]
Thus, the battery module according to an embodiment of the present invention is deformed state of the first battery cell by applying an expanding force to the short circuit part 300, an elastic member 310 that occurs when the (110a), this volume increase due to overcharge a restoration and, by moving the slide bar 320 with a resilient force generated from the elastic member 310 is deformed it is restored to the first bus bar (200a) and a second bus bar (200b), the first bus bar to electrically connect the (200a) and a second bus bar (200b) can generate short circuit.
[94]
Hereinafter to describe the circuit configuration of the mobile short-circuit portion of the battery module in accordance with one embodiment of the present invention.
[95]
9 is an equivalent circuit diagram before the excessive charging of the battery module in accordance with one embodiment of the present invention, Figure 10 is an equivalent circuit diagram of immediately after the overcharge of the battery module in accordance with one embodiment of the present invention short-circuit additional movement, Figure 11 is the after the overcharge of the battery module in accordance with one embodiment of the invention, an equivalent circuit after the short-circuit portion to move breaking portion breaks.
[96]
When 9 to 11, the case of the battery module is operating in not overcharge the normal state according to the present invention, as shown in Figure 9, the first does not increase the volume of the battery cell (110a) the first bus bars (200a) and a second bus bar (200b) may not be electrically shorted.
[97]
However, when the battery module according to the present invention is overcharged, as shown in FIG. 10, first a short-circuit unit 300 authorized the expansion force as the increase in volume of the battery cell (110a), a first bus bar (200a ) and by a second bus bar (200b) electrically connected to the first bus bar (200a) and a second bus bar (200b), the first bus in contact with the bar (200a) and a second bus bar (200b) to move to the It can cause a short circuit.
[98]
Accordingly, the short circuit including the short-circuit unit 300, a first bus bar (200a) and a second bus bar (200b) is formed can flow high current (I).
[99]
Then, the first bus bar (200a) with a high current (I) continuously when flowing in,, is smaller the sectional area resistance value occurs, the large breaking portion (210a) the resistance heat of a high temperature as shown in Fig. 11 by breaking, it is the power supplied to the battery module from the external voltage source block can be prevented from being overcharged.
[100]
Figure 12 is a diagram showing a cross-section of a cartridge of the battery module in accordance with one embodiment of the present invention, Figure 13 is a perspective view of the inside of the cartridge battery module according to an embodiment of the present invention.
[101]
12 when to refer to FIG. 13, the cartridge 400 includes a first battery cell (110a) and a second electrode lead (120b) of the first battery cell (110a) positioned between the battery cell (110b), it is possible to accommodate or support at least a portion of the second battery cell (110b), the second electrode leads (120b), a first bus bar (200a), a second bus bar (200b) and the short circuit part 300 of the.
[102]
More specifically, the cartridge 400 includes a face-to-face contact and can not electrically connected to the first the first electrode lead (120a) and the first bus bar (200a) of the battery cell (110a) in the lower, face-to-face contact to electrically It can support a second second electrode leads (120b) and a second bus bar (200b) of the battery cell (110b) connected at the bottom.
[103]
For this purpose, the cartridge 400 includes a second electrode leads (120b), a first bus bar (200a) and a second of the first electrode lead (120a), a second battery cell (110b) of the first battery cell (110a) the support groove 430 having a shape corresponding to the bent shape of the bus bars (200b) may be formed.
[104]
On the other hand, the cartridge 400 has a receiving space 410 of the shape corresponding to the outer shape of the outer shape and the short-circuit unit 300 of the short circuit part 300 to the inside is formed can receive the short-circuit unit 300 to the inside.
[105]
At this time, the receiving space 410 of the cartridge 400 can be formed so as to correspond to the volume in the case where the elastic member 310 of the short circuit part 300 is restored from the deformed state.
[106]
That is, the receiving space 410 of the cartridge 400 in response to the volume increases when the elastic members 310 of the short circuit part 300 is transformed to restore, extend in a volume increasing direction of the elastic member 310 It can be formed.
[107]
The battery module according to the present invention can be broken by exactly a first bus bar when an abnormal swelling of the battery cells increase the reliability of the battery module by interrupting the electric power supplied from an external voltage source, it is possible to prevent excessive charging of the battery modules.
[108]
On the other hand, the battery pack according to the present invention includes one or more of the above-described battery module. At this time, the battery pack may be further included in addition to a battery module, a case for accommodating this battery module, a variety of apparatus for controlling charging and discharging of the battery module, such as a BMS (Battery Management System), a current sensor, a fuse or the like. In particular, the battery pack according to an embodiment of the present invention, a battery module, each first bus bar, a second bus bar, by breaking the first bus bar when an abnormal swelling of the battery cell having a short circuit portion and a cartridge supplied from an external voltage source, by cutting off the electric power, it can be carried out for each battery module overcharge protection.
[109]
The battery module according to the present invention can be applied to vehicles, such as electric or hybrid vehicle. That is, the vehicle according to the present invention, may include a battery module according to the present invention.
[110]
The present invention described above is carried out by the present invention it to those of ordinary skill, in which so many possible changes and modifications may be made without departing from the scope of the present invention above-described example and the attached drawings in it not limited by.

Claims
[Claim 1]
A first electrode electrically connected to the first lead and the bus bar of the first battery cell; A second electrode lead and the second bus bar electrically connected to the second battery cell; Receiving the expanding force due to the volume increase of the first battery cell is the first bus bar, and was electrically connected to the first movement towards the second bus bar to the first bus bar and the second bus bar to generate a short circuit (Short) short-circuit part; And the first electrode lead and said second electrode lead, the first bus bar, the second bus bar and a battery module including a cartridge for containing or supporting at least a part of the short-circuit portion.
[Claim 2]
The method of claim 1, wherein the short circuit portion elastic members to provide an elastic force toward the first bus bar and the second bus bar; And a battery module formed engaging portion projecting to the one end to the resilient force is generated including the engaging the locking hole of the cartridge, the slide bar to maintain the deformed state of the elastic member.
[Claim 3]
The method of claim 2, wherein the slide bar is the elastic member which is being is applied to the expanding force in the engaging portion released the engaging portion and the engaging of the engaging groove and restores the state of deformation of the resilient members, deformation state is restored, is received from the elastic force of the first bus bar and the second bus bar to move toward the first bus bar, and the battery module that contacts the second bus bar.
[Claim 4]
The method of claim 2, wherein the slide bar is the first bus bar and the second bus bar in contact with the first bus bar and the second bus bar to electrically short circuit the battery module is formed of a short-circuit terminal to the other terminal.
[Claim 5]
The method of claim 3, wherein the short-circuit terminal of the battery module is formed of a conductive material.
[Claim 6]
The method of claim 1, wherein the cartridge has a receiving space of a shape corresponding to the outer portion to the inner short-circuit is formed in the battery module received in the interior parts of the short-circuit.
[Claim 7]
The method of claim 6, wherein the receiving space is the battery module is formed so as to correspond to the volume of the elastic member according to the restored state of the elastic member.
[Claim 8]
The method of claim 1, wherein the cartridge-to-face contact and electrically connected to the first electrode leads and the first bus bar and the second electrode lead, and the second bus, each of at least the supporting part, and electrically connected by face-to-face contact bar each for supporting at least a battery module part.
[Claim 9]
The method of claim 1, wherein the first bus bar and the second at least one of the bus bar of the battery module that includes a fracture to block an electrical connection, are broken and the outer case to which the short circuit occurs.
[Claim 10]
The first battery pack including a battery module according to any one of the preceding claims 9.
[Claim 11]
FAW including a battery module according to any one of the preceding claims 9.