Title of the invention: Battery cell connector and battery cell structure connected using the same
Technical field
[One]
This application claims the benefit of priority based on Korean Patent Application No. 2018-0164151 filed on December 18, 2018, and all contents disclosed in the documents of the Korean patent application are included as part of this specification.
[2]
The present invention relates to a battery cell connector that can be used by setting a desired voltage by a general consumer, and a battery cell structure connected using the same.
Background
[3]
Existing gasoline vehicles and diesel vehicles using fossil fuels are pointed out as major air pollution sources. As a solution to this, interest in electric vehicles, hybrid electric vehicles, and plug-in hybrid electric vehicles is increasing. As their energy source, research and development on high-capacity automotive secondary batteries are also actively progressing.
[4]
As portable electronic devices become highly functional, demand for high-capacity secondary batteries is increasing in the mobile field as well. In order to increase the voltage of the secondary battery, a structure similar to that of a battery pack is required. In order to configure the battery pack, a battery pack case and an electrical connection member are required, but there is a problem of increasing the weight.
[5]
In the case of a cylindrical secondary battery, since a standard size is used, it is difficult to freely design the structure of the battery pack.
[6]
Patent Document 1 is a battery cell provided with a plurality of connection connections for connection with other battery cells, and a connection connection part consisting of a concave part provided on one side of the battery cell and a convex part provided on one side opposite to the one side It includes.
[7]
However, Patent Document 1 discloses a structure in which capacity is increased by forming a hook structure provided on one side of the battery cell and one side opposite to the side, but does not specifically disclose a structure capable of increasing the voltage. have.
[8]
Patent Document 2 discloses a battery pack for a vehicle in which a connection portion is formed on a side portion of a battery cell having a rectangular plate shape, and battery cells adjacent to each other on a plane are connected to each other at the connection portion.
[9]
However, Patent Document 2 does not disclose a structure in which a rectangular plate-shaped battery cell is mounted on the same plane to be formed, and a structure in which a cylindrical secondary battery is connected in series and in parallel is free.
[10]
Patent Document 3 is provided with a box-shaped main block with a fitting groove formed on the bottom surface and a fitting protrusion formed on the upper surface, and a corresponding groove and a corresponding protrusion of the same standard as the fitting groove and the fitting protrusion of the main block are formed on the bottom and upper surfaces, respectively. Disclosed is an expandable auxiliary battery having an assembled block structure having an expansion block.
[11]
However, Patent Document 3 does not disclose a structure in which parallel connection between individual battery cells is possible because the structure is connected in parallel inside the main block.
[12]
Accordingly, there is a high need for a battery cell structure capable of using a conventional secondary battery as it is and capable of being transformed into various forms and designing a desired voltage.
[13]
(Prior technical literature)
[14]
Korean Patent Application Publication No. 2011-0037543 (2011.04.13)
[15]
Japanese Laid-Open Patent Publication No. 2002-352786 (2002.12.06)
[16]
Korean Patent Application Publication No. 2018-0037409 (2018.04.12)
Detailed description of the invention
Technical challenge
[17]
The present invention has been made to solve the above problems, and an object of the present invention is to provide a free-form high voltage and high capacity battery cell structure using a conventional battery cell, and a battery cell connector capable of assembling the same.
Means of solving the task
[18]
One embodiment according to the present invention for achieving this object is a battery cell connector in the form of a hexahedron as a whole, a lower mounting part for mounting the lower part of the cylindrical battery cell inside the upper surface, and the lower surface of another cylindrical battery cell inside. The upper mounting part for mounting the upper part, the front, rear, left and right sides are provided with connecting parts that can be electrically and physically connected to other battery cell connectors, and the lower mounting part, the upper mounting part and the connection part are electrically connected inside the battery cell connector. It may be a connected battery cell connector.
[19]
The lower mounting part and the upper mounting part have a circular groove shape, and a means for fixing the cylindrical battery cells mounted therein may be provided inside the lower mounting part and the upper mounting part.
[20]
The lower mounting portion and the inner sidewall of the upper mounting portion may be formed with a protruding structure for fixing the cylindrical battery cells mounted thereon.
[21]
The protruding structure may be formed in a continuous form or may be spaced apart from each other.
[22]
A non-slip material may be added to the inner sidewall of the circular groove.
[23]
Inside the upper mounting portion, a slit mounting portion capable of fixing a cylindrical battery in which a fixing slit is formed may be provided.
[24]
The fixing slit may be a horizontal slit or an oblique slit.
[25]
The connection part is composed of a concave part and a convex part, and the concave part and the convex part can be combined with the corresponding convex part and concave part of another battery cell connector, and are continuously combined and extended in both front and rear, left and right directions. It is a form that can be.
[26]
The present invention also provides a battery cell structure connected by the battery cell connector.
Brief description of the drawing
[27]
1 is a top perspective view of a battery cell connector according to a first embodiment.
[28]
2 is a bottom perspective view of the battery cell connector according to the first embodiment.
[29]
3 is a top perspective view of a battery cell connector according to a second embodiment.
[30]
4 is a bottom perspective view of a battery cell connector according to a second embodiment.
[31]
5 is a top perspective view of a battery cell connector according to a third embodiment.
[32]
6 is a top perspective view of a battery cell connector according to a fourth embodiment.
[33]
7 is a perspective view of a battery cell top cap according to a fifth embodiment.
[34]
8 shows a process of forming a battery cell structure.
[35]
9 is a perspective view of a battery cell top cap according to a sixth embodiment.
Mode for carrying out the invention
[36]
Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment in which a person of ordinary skill in the art to which the present invention pertains can easily implement the present invention. However, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.
[37]
In addition, the same reference numerals are used for portions having similar functions and functions throughout the drawings. Throughout the specification, when a part is said to be connected to another part, this includes not only a case in which it is directly connected, but also a case in which it is indirectly connected with another element interposed therebetween. In addition, the inclusion of a certain component does not exclude other components unless specifically stated to the contrary, but means that other components may be further included.
[38]
The invention of the present application will be described with reference to the drawings in detailed examples.
[39]
1 is a top perspective view of a battery cell connector according to a first embodiment, and FIG. 2 is a bottom perspective view of a battery cell connector according to a first embodiment.
[40]
1 and 2, the battery cell connector 100 has a hexahedral shape as a whole, and a lower mounting part 110 for mounting the lower part of the cylindrical battery cell inside the upper surface, It is a structure in which an upper mounting part 113 for mounting the upper part and a connection part 120 that can be electrically and physically connected to another battery cell connector are formed.
[41]
The battery cell connector 100 may be made of a conductive material within a range that does not cause a short circuit, or the lower mounting part 110, the upper mounting part 113, and the connection part 120 are electrically A connection part to be connected may be included, and the connection part may be electrically connected between the plurality of battery cells while being connected to the electrode terminal of the cylindrical battery cell.
[42]
The inside of the lower mounting part 110 and the upper mounting part 113 is formed in a circular groove shape, and a protruding structure 111 for fixing the cylindrical battery cell is formed on the inner sidewall of the lower mounting part 110.
[43]
The protrusion structure 111 of FIG. 1 has a continuous shape such as a ring shape.
[44]
The connection part 120 has a connection structure 121 in which the concave part 121a and the convex part 121b are repeatedly formed. Electrical connection can be made.
[45]
Accordingly, a plurality of battery cell connectors are connected in a horizontal direction through a connection part, and cylindrical battery cells are mounted on a lower mounting part and/or an upper mounting part of the plurality of battery cell connectors, thereby forming a battery cell structure connected in parallel in the horizontal direction. I can.
[46]
The slit mounting portion 130 is formed in a structure in which the clasp portion for coupling to the top cap of the cylindrical battery cell is parallel to the bottom of the circular groove of the upper mounting portion 113.
[47]
3 is a top perspective view of a battery cell connector according to a second embodiment, and FIG. 4 is a bottom perspective view of a battery cell connector according to a second embodiment.
[48]
3 and 4, the battery cell connector 200 has a hexahedral shape as a whole, and a lower mounting part 210 for mounting the lower part of the cylindrical battery cell inside the upper surface, and the lower surface of the other cylindrical battery cell inside. It is a structure in which an upper mounting part 213 for mounting the upper part and a connection part 220 that can be electrically and physically connected to another battery cell connector are formed.
[49]
The inside of the lower mounting part 210 and the upper mounting part 213 is formed in a circular groove shape, and a protruding structure 211 for fixing the cylindrical battery cell is formed on the inner sidewall of the lower mounting part 210.
[50]
As the inner sidewall of the circular groove, a non-slip material 212 is added to the lower side of the protruding structure 211, and when a cylindrical battery cell is mounted inside the circular groove, it is possible to prevent the cylindrical battery cell from being separated.
[51]
The battery cell connector 200 has a connection structure 221 in which concave portions and convex portions are repeatedly formed in the connecting portion 220 so that electrical connection can be made with other battery cell connectors that can be arranged in both the front and rear, left and right directions. Electrical connection with other battery cell connectors can be made in both left and right directions.
[52]
The slit mounting portion 230 is formed in an inclined structure in which the clasp portion for coupling to the top cap of the cylindrical battery cell is inclined with respect to the bottom of the circular groove of the upper mounting portion 213.
[53]
2 and 4 show a structure in which four slit mounting portions 130 and 230 are formed, but unlike this, the slit mounting portions may be formed in three or more numbers, and the same intervals for stable coupling with cylindrical battery cells It is desirable to be located so as to be spaced apart.
[54]
5 is a top perspective view of a battery cell connector according to a third embodiment, and FIG. 6 is a top perspective view of a battery cell connector according to a fourth embodiment.
[55]
Referring to FIG. 5, the battery cell connector 300 is made in a hexahedral shape as a whole, and a lower mounting portion 310 for mounting the lower portion of the cylindrical battery cell is formed inside the upper surface, and is electrically and physically with other battery cell connectors. There is a connecting portion 320 formed with a connecting structure 321 consisting of a recessed portion and a groove portion so as to be connected.
[56]
A protruding structure 311 for fixing the cylindrical battery cell is formed on the inner sidewall of the lower mounting part 310 of FIG. 5, and the protruding structures 311 are arranged to be spaced apart from each other.
[57]
Referring to FIG. 6, the battery cell connector 400 is formed in a hexahedral shape as a whole, and a lower mounting portion 410 for mounting the lower portion of the cylindrical battery cell is formed inside the upper surface. There is a connecting portion 420 formed with a connecting structure 421 composed of a recessed portion and a groove portion so as to be connected.
[58]
A non-slip material 412 is added to the lower side of the protruding structure 411 for fixing the cylindrical battery cell to the inner sidewall of the circular groove of the lower mounting part 410, and when the cylindrical battery cell is mounted inside the circular groove , It is possible to prevent the cylindrical battery cell from being separated.
[59]
7 is a perspective view of a battery cell top cap according to the fifth embodiment, and FIG. 8 shows a process of forming a battery cell structure.
[60]
7 and 8, the top cap 510 of the battery cell has a protrusion 514 in the center, and the through hole 511 into which the slit mounting part is inserted and the slit mounting part are slidingly coupled to the sidewall of the protrusion 514 There is a coupling portion 513 made of a fixing slit 512 that is.
[61]
The fixing slit 512 of FIG. 7 is a horizontal slit, and the clasp portion for coupling to the top cap of the cylindrical battery cell is parallel to the bottom of the circular groove of the upper mounting portion, like the slit mounting portion 130 of FIG. 2 It is combined with the slit mounting part of.
[62]
That is, as shown in FIG. 8, in order to connect the negative electrode of the cylindrical battery cell 610 and the positive electrode of the cylindrical battery cell 620 in series, as shown in (a), the lower mounting portion of the battery cell connector 100 After mounting the cylindrical battery cell 610, these are positioned on the top surface of the top cap 510, which is the positive terminal of the cylindrical battery cell 620.
[63]
Thereafter, as shown in (b), the slit mounting portion 130 of the battery cell connector 100 is inserted into the through hole 511 of the top cap 510, and the battery cell connector 100 is rotated in the direction of the arrow.
[64]
By the rotation, the latch part of the slit mounting part 130 is slidably fastened to the fixing slit 512. As shown in (c), the negative electrode of the cylindrical battery cell 610 and the positive electrode of the cylindrical battery cell 620 are the battery cells. It is electrically connected through a connector.
[65]
9 is a perspective view of a battery cell top cap according to a sixth embodiment.
[66]
9, the top cap 520 of the battery cell has a protrusion 524 at the center, and a through hole 521 into which a slit mounting part is inserted and a slit mounting part are slidably fastened to the sidewall of the protrusion 524. There is a coupling portion 523 made of slits 522.
[67]
Unlike the fixing slit 512 of FIG. 7, the fixing slit 522 of FIG. 9 has an oblique slit shape. Like the slit mounting part 230 of FIG. 4, the clasp portion for coupling to the top cap of the cylindrical battery cell The upper mounting portion may be combined with a slit mounting portion including an inclined structure inclined with respect to the bottom of the circular groove.
[68]
In the case of using the fixing slit 522 having such a structure, it is possible to effectively prevent the slit mounting portion from being separated from the fixing slit 522.
[69]
On the other hand, although not shown in the drawing, the battery cells coupled to the battery cell connector are connected in parallel through horizontal coupling of the battery cell connectors, and thus a battery cell structure having a high capacity can be provided.
[70]
In addition, by forming a layered structure in the state of being connected in parallel, a series connection may be made between the upper layer and the lower layer. As the layered structure is repeated, a high voltage battery cell structure may be formed.
[71]
As described above, by using a battery cell connector having a simple structure, a battery cell structure having a high voltage and a high capacity using a conventional cylindrical battery cell can be formed in an easy manner.
[72]
Those of ordinary skill in the field to which the present invention belongs will be able to perform various applications and modifications within the scope of the present invention based on the above contents.
[73]
(Explanation of code)
[74]
100, 200, 300, 400: battery cell connector
[75]
110, 210, 310, 410: lower mounting part
[76]
111, 211, 311, 411: protruding structure
[77]
113, 213: upper mounting part
[78]
120, 220, 320, 420: connection
[79]
121a: lumbar part
[80]
121b: iron
[81]
121, 221, 321, 421: connection structure
[82]
130, 230: slit mounting portion
[83]
212, 412: non-slip material
[84]
510, 520: top cap
[85]
511, 521: through hole
[86]
512, 522: fixing slit
[87]
513, 523: coupling portion
[88]
514, 524; projection part
[89]
610, 620: cylindrical battery cell
Industrial applicability
[90]
As described above, the battery cell connector according to the present invention has a structure that can be directly applied to a conventional battery cell.
[91]
In addition, the battery cell connector can be used not only for serial connection between a plurality of battery cells, but also for parallel connection.
[92]
In addition, various types of battery cell structures may be formed by using the battery cell connector.
[93]
In addition, it is possible to easily manufacture a high voltage and/or high capacity battery cell structure.
Claims
[Claim 1]
As a whole hexahedral shape battery cell connector, the upper surface is a lower mounting portion for mounting the lower portion of the cylindrical battery cell therein; On the lower surface, an upper mounting portion for mounting the upper portion of another cylindrical battery cell therein; The front, rear, left, and right sides are provided with connection parts that can be electrically and physically connected to different battery cell connectors, respectively, and the lower mounting part, the upper mounting part, and the connection part are electrically connected inside the battery cell connector.
[Claim 2]
The battery cell connector of claim 1, wherein the lower mounting part and the upper mounting part have a circular groove shape, and a means for fixing the cylindrical battery cells mounted therein is provided inside the lower mounting part and the upper mounting part.
[Claim 3]
The battery cell connector of claim 1, wherein a protruding structure for fixing a cylindrical battery cell mounted thereon is formed on an inner sidewall of the lower mounting part and the upper mounting part.
[Claim 4]
The battery cell connector according to claim 3, wherein the protruding structure is formed in a continuous shape or is arranged spaced apart from each other.
[Claim 5]
The battery cell connector according to claim 2, wherein a non-slip material is added to the inner sidewall of the circular groove.
[Claim 6]
The battery cell connector according to claim 1, wherein a slit mounting part is provided inside the upper mounting part to fix a cylindrical battery having a fixing slit formed therein.
[Claim 7]
The battery cell structure according to claim 6, wherein the fixing slit is a horizontal slit or an oblique slit.
[Claim 8]
The method of claim 1, wherein the connection part is composed of a concave part and a convex part, and the concave part and the convex part can be combined with a corresponding convex part and a concave part of another battery cell connector, and both front and rear directions A battery cell connector that can be continuously combined and extended.
[Claim 9]
A battery cell structure connected by the battery cell connector according to any one of claims 1 to 8.