KR102235136B1 - Battery pack in which a positive terminal and a negative terminal are disposed on one face without wiring - Google Patents

Abstract

According to an embodiment, a battery pack in which a positive terminal and a negative terminal are disposed on one side without wiring may include: a plurality of first cells each including two first cell tabs; A plurality of second cells arranged in parallel with the plurality of first cells and each including two second cell tabs; A plurality of first cell tap cooling devices fastened to first cell tabs of each of two adjacent first cells among the plurality of first cells; A plurality of second cell tap cooling devices fastened to first cell tabs of each of two adjacent first cells among the plurality of first cells and arranged in parallel with the plurality of first cell tap cooling devices; A plurality of third cell tap cooling devices fastened to second cell tabs of each of two adjacent second cells among the plurality of second cells; A plurality of fourth cell tap cooling devices fastened to second cell tabs of each of two adjacent second cells among the plurality of second cells and arranged in parallel with the plurality of third cell tap cooling devices; A positive terminal attached to any one first cell tap cooling device provided at one end of the plurality of first cell tap cooling devices; Connection attached to any one second cell tap cooling device provided at one end of the plurality of second cell tap cooling devices, and any one third cell tap cooling device provided at one end of the plurality of third cell tap cooling devices Terminals; And a negative terminal attached to any one fourth cell tap cooling device provided at one end of the plurality of fourth cell tap cooling devices.

Description

BATTERY PACK IN WHICH A POSITIVE TERMINAL AND A NEGATIVE TERMINAL ARE DISPOSED ON ONE FACE WITHOUT WIRING}

The following description relates to a battery pack in which a positive terminal and a negative terminal are disposed on one side without wiring.

Surface cooling of conventional lithium-ion battery packs is largely divided into two methods. The first cooling method is a method of inserting a cooling plate between the stacked pouch cells, and then cooling the surface of the pouch cell by air cooling or water cooling through the cooling plate. The second cooling method is an air-cooling method by attaching a heat sink to a cell tab (battery terminal block), and is mainly used to generate a lot of heat in and around the cell tab when the pouch cell is discharged at a high C rating. .

In the case of the first cooling method, the weight and volume of the cooling structure is large, the cost is high, the cooling effect on the pouch surface is limited, and the structure of applying pressure between cells to maintain cooling efficiency is required. There is a disadvantage in that it takes effort to disassemble and assemble.

In the case of the second cooling method, since there is no cooling plate between the pouch cells, the pack can be stacked compactly and the cost is low. In addition, there is a disadvantage in that waterproofing is difficult and there is a risk of short circuit because the heat sink is exposed to have a cooling effect.

The battery pack is composed of a plurality of pouch cells. In order to facilitate electrical connection with external elements, a positive terminal and a negative terminal of a battery pack composed of a plurality of pouch cells may be disposed on one side. Conventionally, in order to arrange the positive and negative terminals on one side as described above, wiring has been performed on the cell tabs of a plurality of pouch cells. However, such a wiring work is cumbersome and causes interference between internal parts, and there is a problem that inconvenience is caused when maintenance work such as replacement of some pouch cells is required.

An object of an embodiment is to provide a battery pack in which a positive terminal and a negative terminal are disposed on one side without wiring.

According to an embodiment, a battery pack in which a positive terminal and a negative terminal are disposed on one side without wiring may include: a plurality of first cells each including two first cell tabs; A plurality of second cells arranged in parallel with the plurality of first cells and each including two second cell tabs; A plurality of first cell tap cooling devices fastened to first cell tabs of each of two adjacent first cells among the plurality of first cells; A plurality of second cell tap cooling devices fastened to first cell tabs of each of two adjacent first cells among the plurality of first cells and arranged in parallel with the plurality of first cell tap cooling devices; A plurality of third cell tap cooling devices fastened to second cell tabs of each of two adjacent second cells among the plurality of second cells; A plurality of fourth cell tap cooling devices fastened to second cell tabs of each of two adjacent second cells among the plurality of second cells and arranged in parallel with the plurality of third cell tap cooling devices; A positive terminal attached to any one first cell tap cooling device provided at one end of the plurality of first cell tap cooling devices; Connection attached to any one second cell tap cooling device provided at one end of the plurality of second cell tap cooling devices, and any one third cell tap cooling device provided at one end of the plurality of third cell tap cooling devices Terminals; And a negative terminal attached to any one fourth cell tap cooling device provided at one end of the plurality of fourth cell tap cooling devices.

The positive terminal may be disposed on the opposite side of the connection terminal based on the plurality of first cells, and the negative terminal may be disposed on the opposite side of the connection terminal based on the plurality of second cells.

The plurality of second cell tap cooling devices are disposed closer to the plurality of second cells than the plurality of first cell tap cooling devices, and the plurality of third cell tap cooling devices cool the plurality of fourth cell taps. It may be disposed closer to the plurality of first cells than the device.

Each of the first cell tap cooling device, the second cell tap cooling device, the third cell tap cooling device, and the fourth cell tap cooling device includes a bus bar body, and at least a portion of the cell tabs formed below the bus bar body. A bus bar including a cell tab accommodating portion for accommodating and a flow path lower portion recessed in the upper surface of the bus bar body; And a cover including a cover body connected to an upper side of the busbar body, and an upper portion of a flow path that is recessed in a lower surface of the cover body and connected to a lower side of the flow path to form a flow path.

Each of the first cell tap cooling device, the second cell tap cooling device, the third cell tap cooling device, and the fourth cell tap cooling device includes: a fastening terminal provided in the cell tab receiving portion; And a pressing member penetrating the busbar body and protruding at least a portion of the cell tab receiving portion to press the fastening terminal downward.

The cell tab accommodating portion may have a shape whose width becomes narrower as it goes downward, and may support the fastening terminal.

The fastening terminal has a shape whose width becomes narrower as it goes downward, and may be in surface contact with the cell tab receiving portion.

According to an embodiment, since the positive terminal and the negative terminal may be disposed on one side without performing a wiring operation, it is possible to increase the operator's convenience during an assembly process or a maintenance process.

The following drawings attached to the present specification illustrate a preferred embodiment of the present invention, and serve to further understand the technical idea of the present invention together with the detailed description of the present invention. It is limited and should not be interpreted.
1 is a perspective view of a cell tap cooling apparatus according to an exemplary embodiment.
2 is an exploded perspective view of a cell tap cooling device according to an exemplary embodiment.
3 is a cross-sectional view of a cell tap cooling device according to an exemplary embodiment, and illustrates a state in which the cell tap is separated from the cell tap cooling device.
4 is a cross-sectional view and a partially enlarged view of a cell tap cooling apparatus according to an exemplary embodiment, and illustrates a state in which the cell tab is in close contact with a bus bar by a fastening terminal.
5 is a partially enlarged cross-sectional view of a cell tap cooling device according to an exemplary embodiment.
6 is a cross-sectional view and a partially enlarged view of a cell tap cooling device according to an exemplary embodiment, and illustrates a state in which two cell taps are fastened to the cell tap cooling device.
7 is a plan view of a battery pack according to an exemplary embodiment.
8 is a front view of a battery pack according to an exemplary embodiment.

This patent application claims priority based on patent application No. 2018-0055492 filed on May 15, 2018, and the entire contents of the application are incorporated by reference in this patent application.

Hereinafter, embodiments will be described in detail through exemplary drawings. In adding reference numerals to elements of each drawing, it should be noted that the same elements are assigned the same numerals as possible, even if they are indicated on different drawings. In addition, in describing the embodiment, if it is determined that a detailed description of a related known configuration or function interferes with the understanding of the embodiment, the detailed description thereof will be omitted.

In addition, in describing the constituent elements of the embodiment, terms such as first, second, A, B, (a), and (b) may be used. These terms are for distinguishing the constituent element from other constituent elements, and the nature, order, or order of the constituent element is not limited by the term. When a component is described as being "connected", "coupled" or "connected" to another component, the component may be directly connected or connected to that other component, but another component between each component It should be understood that may be “connected”, “coupled” or “connected”.

Components included in one embodiment and components including common functions will be described using the same name in other embodiments. Unless otherwise stated, the description in one embodiment may be applied to other embodiments, and a detailed description will be omitted in the overlapping range.

1 is a perspective view of a cell tap cooling device according to an embodiment, and FIG. 2 is an exploded perspective view of a cell tap cooling device according to an embodiment. 3 is a cross-sectional view of a cell tap cooling device according to an exemplary embodiment, and illustrates a state in which the cell tap is separated from the cell tap cooling device. 4 is a cross-sectional view and a partially enlarged view of a cell tap cooling apparatus according to an exemplary embodiment, and illustrates a state in which the cell tab is in close contact with a bus bar by a fastening terminal. 5 is a partially enlarged cross-sectional view of a cell tap cooling device according to an exemplary embodiment.

Referring to FIGS. 1 to 5, the cell tap cooling apparatus 1 may cool the plurality of cell tabs T while assisting in electrical connection between the plurality of cell tabs T. The cell tap cooling device 1 may include a bus bar 11, a cover 12, a fastening terminal 13, a pressing member 91, and a coupling member 92.

The bus bar 11 may accommodate at least a portion of the plurality of cell tabs T, and may implement electrical connection between the plurality of cell tabs T. For example, FIGS. 1 and 2 show a bus bar 11 implementing electrical connection between eight cell taps, but it should be noted that the present invention is not limited thereto. Of the 8 cell tabs, 4 on the left can function as-and 4 on the right can function as +. The bus bar 11 may be made of a material having high thermal conductivity and electrical conductivity. The bus bar 11 may include a bus bar body 111, a cell tab receiving portion 112, a flow path lower portion 113, a fastening hole 118, and a coupling groove 119.

The bus bar body 111 may support the fastening terminal 13 and the pressing member 91. The upper side of the busbar body 111 may be connected to the cover 12, and the lower side of the busbar body 111 may be provided with a cell tab receiving portion 112. The busbar body 111 may be electrically connected by contacting the cell tab.

The cell tab accommodating part 112 may accommodate at least a portion of the cell tab. The cell tab accommodating part 112 may be provided under the bus bar body 111, and a plurality of the cell tab receiving parts 112 may be provided side by side. The cell tab accommodating part 112 may accommodate the fastening terminal 13. The cell tab accommodating part 112 may have a free space so that the fastening terminal 13 can move. For example, the size of the cell tab accommodating part 112 may be larger than the size of the fastening terminal 13. The cell tab receiving portion 112 may be opened downward. The cell tab T may enter the cell tab receiving portion 112 through the lower opening of the cell tab receiving portion 112. In addition, the cell tab receiving portion 112 may be opened to the left and/or to the right. The fastening terminal 13 may enter the cell tab receiving portion 112 through the left and/or right openings.

The cell tab accommodating part 112 may have a shape whose width becomes narrower toward the bottom. For example, the cell tab receiving part 112 may have a trapezoidal shape. The cell tab accommodating part 112 may support the fastening terminal 13 to prevent the fastening terminal 13 from escaping downward. For example, the cell tab receiving portion 112 may support both sides of the fastening terminal 13. For example, the cell tab receiving part 112 may make surface contact with the fastening terminal 13. The cell tab accommodating part 112 may accommodate two cell tabs T disposed opposite to each other around the fastening terminal 13. One fastening terminal 13 may press the two cell tabs T.

The flow path lower portion 113 may be recessed in the upper surface of the bus bar body 111. The flow path lower part 113 may be combined with the flow path upper part 123 of the cover 12 to form the flow path F. The flow path F may guide the flow of the refrigerant. For example, the flow path lower portion 113 may have a semi-cylindrical shape that is convex downward.

The fastening hole 118 may support the pressing member 91. For example, the fastening hole 118 may be screwed with the pressing member 91. For example, the fastening hole 118 may function as a female thread, and the pressing member 91 may function as a male thread. The fastening hole 118 may include a fastening hole body 1181 and a fastening hole head 1182.

The fastening hole body 1181 may penetrate the bus bar body 111 in the vertical direction and may be screwed with the pressing member 91.

The fastening hole head 1182 is provided on the upper end of the fastening hole body 1181 and may have a larger width than the fastening hole body 1181. The fastening hole head 1182 may accommodate the pressing head 912 of the pressing member 91.

The coupling groove 119 may support the coupling member 92. For example, the coupling groove 119 may be screwed to the coupling member 92.

The cover 12 is disposed above the bus bar 11 and may be formed of an insulating material. The cover 12 may include a cover body 121, an upper flow path 123, a jig guide 128, and a coupling hole 129.

The cover body 121 may be engaged with the bus bar body 111. For example, the cover body 121 may have a shape corresponding to the bus bar body 111. A sealing material may be applied to the inner walls of each of the cover body 121 and the bus bar body 111.

The flow path upper part 123 may be coupled to the flow path lower part 113 to form a flow path F for guiding the flow of the refrigerant. For example, the flow path upper part 123 may have a semi-cylindrical shape convex upward. The flow path upper part 123 may form a cylindrical flow path together with the flow path lower part 113.

The jig guide 128 may communicate with the fastening hole 118. The jig guide 128 may guide insertion of a jig (not shown) for rotating the pressing member 91 supported by the fastening hole 118. The jig can move the pressing member 91 downward or upward by rotating the pressing member 91. The jig guide 128 may assist a user to easily insert the jig into the pressing member 91.

The coupling hole 129 may communicate with the coupling groove 119 and support the coupling member 92. For example, the coupling hole 129 may be screwed to the coupling member 92.

The fastening terminal 13 may be provided in the cell tab receiving portion 112. The fastening terminal 13 is movable in the up-down direction (also referred to as “first direction”) within the cell tab receiving portion 112. For example, the cell tab accommodating part 112 may have a free space so that the fastening terminal 13 can move. The fastening terminal 13 may press the cell tab T. For example, the cell tab T may be accommodated in the cell tab receiving portion 112 and may be disposed between the bus bar 11 and the fastening terminal 13. In a state in which no external force is applied to the fastening terminal 13, the cell tab T may not be in close contact with the bus bar 11. On the other hand, the fastening terminal 13 may press the cell tab T downward while moving downward by receiving an external force from the pressing member 91. In this case, the cell tab T is attached to the bus bar 11. It can be adhered.

The fastening terminal 13 is slidable in the left-right direction (also referred to as “second direction”) along the cell tab receiving portion 112. The fastening terminal 13 can be easily replaced by sliding in the left and right direction. The fastening terminal 13 may include a fastening body 131, a receiving groove 132, and a wedge groove 133.

The fastening body 131 may have a shape whose width becomes narrower toward the bottom. For example, the cross section of the fastening body 131 may include a trapezoidal shape. The fastening body 131 may be in surface contact with the cell tab receiving portion 112. When the cell tab (T) is disposed between the bus bar (11) and the fastening terminal (13), the inner wall of the bus bar body (111), that is, the cell tab receiving portion (112) is in surface contact with the cell tab (T) Thus, one surface of the cell tab T can be pressed. Meanwhile, the fastening body 131 may contact the cell tab T and press the other surface of the cell tab T.

The receiving groove 132 may accommodate at least a part of the pressing member 91. The receiving groove 132 may accommodate the lower end of the pressing member 91. The receiving groove 132 may surround the lower end of the pressing member 91, and thus, sliding in the left and right directions of the fastening terminal 13 may be restricted. In other words, the pressing member 91 inserted into the receiving groove 132 can prevent the fastening terminal 13 from being separated from the left and right directions.

The wedge groove 133 may be recessed from the surface exposed to the outside. For example, the wedge groove 133 may be recessed from the left or right side of the fastening body 131.

The pressing member 91 may penetrate the bus bar body 111. For example, the pressing member 91 may be screwed into the fastening hole 118 penetrating the bus bar body 111. At least a portion of the pressing member 91 may protrude toward the cell tab receiving portion 112 to press the fastening terminal 13 downward. For example, when the pressing member 91 is screwed into the fastening hole 118 and rotates in one direction, the pressing member 91 may move downward and press the fastening terminal 13 downward. . On the other hand, when the pressing member 91 is screwed into the fastening hole 118 and rotates in the opposite direction, the pressing member 91 moves upward to release the close contact of the cell tab T. . The lower end of the pressing member 91 may be inserted into the receiving groove 132 of the fastening terminal 13. The pressing member 91 may include a pressing body 911 and a pressing head 912.

The pressing body 911 may be screwed to the fastening hole body 1181.

The pressing head 912 is connected to the upper end of the pressing body 911 and may have a larger diameter than the pressing body 911. The pressure head 912 may be accommodated in the fastening hole head 1182. The lower surface of the pressure head 912 may contact the bus bar body 111. The pressing head 912 may limit the length of the pressing member 91 protruding to the cell tab receiving portion 112 by contacting the upper surface of the bus bar body 111. Contact between the bus bar body 111 and the pressure head 912 prevents excessive force from being applied to the fastening terminal 13.

The coupling member 92 may couple the bus bar 11 and the cover 12.

Hereinafter, a method of fixing the cell tab T to the cell tap cooling device 1 and cooling the cell tab T will be described.

First, the user may rotate the pressing member 91 in one direction to move the pressing member 91 upward. In this case, since the external force applied to the fastening terminal 13 disappears and the size of the cell tab receiving portion 112 is larger than the size of the fastening terminal 13, the fastening terminal 13 may be in a state in which movement is possible. .

Next, the user may place the cell tap cooling device 1 above the plurality of cell tabs T and insert the cell tab T into the space between the fastening terminal 13 and the bus bar 11. have. Since there is a gap between the upper surface of the fastening terminal 13 and the lower end of the pressing member 91, the cell tab T can be easily inserted between the fastening terminal 13 and the bus bar 11. For example, two cell tabs T disposed opposite to each other around the fastening terminal 13 may be accommodated in the cell tab receiving portion 112.

Next, the user can move the pressing member 91 downward by rotating the pressing member 91 in the opposite direction. In this case, the fastening terminal 13 may press the cell tab T to make the cell tab T in close contact with the bus bar 11.

3 and 4 show a state in which the eight cell tabs T are in close contact with the bus bar 11 by the four fastening terminals 13, but it should be noted that the number is not limited. In this case, the left four cell tabs (T) function as the (-) pole, and the right four cell tabs (T) function as the (+) pole, or, conversely, the left four cell tabs (T) are (+). It functions as a pole, and the right four cell tabs (T) can function as a negative pole. For example, two cell tabs T may be in close contact with the bus bar 11 by one fastening terminal 13. Hereinafter, in FIGS. 6 to 8, for convenience of description, a description will be made based on a structure in which two cell tabs T are in close contact with the bus bar 11 by one fastening terminal 13.

6 is a cross-sectional view and a partially enlarged view of a cell tap cooling device according to an exemplary embodiment, and illustrates a state in which two cell taps are fastened to the cell tap cooling device. 7 is a plan view of a battery pack according to an exemplary embodiment, and FIG. 8 is a front view of the battery pack according to an exemplary embodiment.

6 to 8, a battery pack 100 (hereinafter referred to as'battery pack') in which a positive terminal and a negative terminal are disposed on one side without wiring is shown. The battery pack 100 includes a plurality of first cells (C1), a plurality of second cells (C2), a plurality of first cell tap cooling devices (1a), a plurality of second cell tap cooling devices (1b), and a plurality of A third cell tap cooling device 1c, a plurality of fourth cell tap cooling devices 1d, a positive terminal 97, a connection terminal 98, and a negative terminal 99 are included.

A detailed description of the plurality of first to fourth cell tap cooling devices 1a-1d will be replaced with the description with reference to FIGS. 1 to 5 above. However, for convenience of explanation, one cell tap cooling device 1a, 1b, 1c, or 1d is fastened to the two first cell tabs T1 or the two second cell tabs T2. The bus bar 11 of one cell tap cooling device 1a, 1b, 1c, or 1d may accommodate two cell taps T and implement electrical connection between the two cell taps T. The cover 12 may be disposed above the bus bar 11. The fastening terminal 13 may press the cell tab T. The pressing member 91 may press the fastening terminal 13 through the bus bar 11.

Each of the plurality of first cells C1 may include two first cell tabs T1. The plurality of first cells C1 may be arranged in a line. A plurality of first cell tap cooling devices 1a may be fastened to the first cell tab T1 provided on the outside of the two first first cell tabs T1 of the plurality of first cells C1, and A plurality of second cell tap cooling devices 1b may be fastened to the provided first cell tab T1. Here, the outer side refers to a portion of the first cell C1 that is separated from the second cell C2, and the inner side refers to a portion of the first cell C1 that is close to the second cell C2. Of course, the second cell tap cooling device 1b may be fastened to the first cell tab T1 provided on the outside, and the first cell tap cooling device 1a may be fastened to the second cell tab T2 provided on the inside. Make it clear that there is.

The plurality of second cells C2 are arranged in parallel with the plurality of first cells C1, and may each include two second cell tabs T2. The plurality of second cells C2 may be arranged in a line. A plurality of third cell tap cooling devices 1c may be fastened to the second cell tab T2 provided on the inner side of the two second cell tabs T2 of the plurality of second cells C2, and provided on the outside. A plurality of fourth cell tap cooling devices 1d may be fastened to the second cell tab T2. Of course, the fourth cell tap cooling device 1d may be fastened to the second cell tab T2 provided inside, and the third cell tap cooling device 1c may be fastened to the second cell tab T2 provided outside. Make it clear that there is.

The plurality of first cell tap cooling apparatus 1a may be fastened to the first cell tab T1 of each of two adjacent first cells C1 among the plurality of first cells C1. The plurality of first cell tap cooling devices 1a may be arranged in a line. In the case of each of the plurality of first cell tap cooling devices 1a, the portion to which one of the first cell taps T1 is connected functions as a (+) pole or a (-) pole, and the other first cell tap ( The part to which T1) is connected can function as a (-) or (+) pole. A positive electrode terminal 97 may be attached to one end of the plurality of first cell tap cooling devices 1a.

The plurality of second cell tap cooling apparatus 1b may be fastened to the first cell tab T1 of each of the adjacent two first cells C1 among the plurality of first cells C1. The plurality of second cell tap cooling devices 1b may be arranged in a line. The plurality of second cell tap cooling devices 1b may be arranged in parallel with the plurality of first cell tap cooling devices 1a. One first cell tab T1 of the two first cell tabs T1 of the first cell C1 is fastened to the first cell tap cooling device 1a, and the other first cell tab T1 ) Is fastened to the second cell tap cooling device 1b. In the case of each of the plurality of second cell tap cooling devices 1b, the portion to which one of the first cell taps T1 is connected functions as a (+) pole or a (-) pole, and the other first cell tap ( The part to which T1) is connected can function as a (-) or (+) pole. A connection terminal 98 may be attached to one end of the plurality of second cell tap cooling devices 1b.

The plurality of third cell tap cooling apparatus 1c may be fastened to the second cell tab T2 of each of the adjacent two second cells C2 among the plurality of second cells C2. The plurality of third cell tap cooling devices 1c may be arranged in a line. In the case of each of the plurality of third cell tap cooling devices 1c, a portion to which one of the second cell taps T2 is connected functions as a (+) pole or a (-) pole, and the other second cell tap ( The part to which T2) is connected can function as a (-) or (+) pole. A connection terminal 98 may be attached to one end of the plurality of third cell tap cooling devices 1c.

The plurality of fourth cell tap cooling apparatus 1d may be fastened to the second cell tab T2 of each of the adjacent two second cells C2 among the several second cells C2. The plurality of fourth cell tap cooling devices 1d may be arranged in a line. The plurality of fourth cell tap cooling devices 1d may be arranged in parallel with the plurality of third cell tap cooling devices 1c. One second cell tab T2 of the two second cell tabs T2 of the second cell C2 is fastened to the third cell tap cooling device 1c, and the other second cell tab T2 ) Is fastened to the fourth cell tap cooling device 1d. In the case of each of the plurality of fourth cell tap cooling devices 1d, the portion to which any one second cell tap T2 is connected functions as a (+) pole or a (-) pole, and the other second cell tap ( The part to which T2) is connected can function as a (-) or (+) pole. A negative terminal 99 may be attached to one end of the plurality of fourth cell tap cooling devices 1d.

The positive terminal 97 may be attached to any one first cell tap cooling device 1a provided at one end of the plurality of first cell tap cooling devices 1a. The positive electrode terminal 97 may be disposed on the opposite side of the connection terminal 98 to be described later based on the plurality of first cells C1.

The connection terminal 98 is provided at one end of the second cell tap cooling device 1b and one end of the plurality of third cell tap cooling devices 1c. It may be attached to any one of the third cell tap cooling device 1c. Here, any one second cell tap cooling device 1b and any one third cell tap cooling device 1c may be disposed on the same side based on the first cell C1 and the second cell C2. have. The plurality of second cell tap cooling devices 1b are disposed closer to the plurality of second cells C2 than the plurality of first cell tap cooling devices 1a, and the plurality of third cell tap cooling devices 1c It may be disposed closer to the plurality of first cells C1 than the plurality of fourth cell tap cooling devices 1d. When the second cell tap cooling device 1b and the third cell tap cooling device 1c are adjacent, in other words, the second cell tap cooling device 1b and the third cell tap cooling device 1d are connected to the battery pack ( When provided on the inside of 100), the connection terminal may be formed to have a small size. The connection terminal 98 may electrically connect a bus bar of the second cell tap cooling device 1b to a bus bar of the third cell tap cooling device 1c.

The negative terminal 99 may be attached to any one fourth cell tap cooling device 1d provided at one end of the plurality of fourth cell tap cooling devices 1d. The negative terminal 99 may be disposed on the opposite side of the connection terminal 98 based on the plurality of second cells C2. In other words, the negative terminal 99 and the positive terminal 97 may be disposed on the same side with respect to the first cell C1 and/or the second cell C2. According to this structure, the positive terminal 97 and the negative terminal 92 can be provided on the same side of the battery pack 100 without a separate wiring operation. Therefore, when any one of the first cell (C1) and/or the second cell (C2) needs to be replaced, or any one of the plurality of cell tap cooling devices 1a-1d needs to be replaced. Even, the wiring disassembly work is not required, and maintenance is possible simply.

The plurality of cell tap cooling apparatuses 1a-1d may connect the plurality of cell tabs T1-T2 in series, or may be connected in series and in parallel. For example, when one cell tap cooling device 1a-1d connects two cell taps as described above, the plurality of cell tap cooling devices 1a-1d may connect the cell taps in series. Meanwhile, when one cell tap cooling device 1a-1d is connected to four or six, the plurality of cell tap cooling devices 1a-1d may be connected in series and parallel.

As described above, although the embodiments have been described by the limited drawings, various modifications and variations are possible from the above description to those of ordinary skill in the art. For example, the described techniques are performed in a different order from the described method, and/or components such as the described structure, device, etc. are combined or combined in a form different from the described method, or in other components or equivalents. Even if substituted or substituted by, appropriate results can be achieved.

Claims (7)

A plurality of first cells each including two first cell tabs;
A plurality of second cells arranged in parallel with the plurality of first cells and each including two second cell tabs;
A plurality of first cell tap cooling devices physically and electrically connected to first cell taps of each of two adjacent first cells among the plurality of first cells;
A plurality of second cell tap cooling devices that are physically and electrically connected to first cell taps of each of two adjacent first cells among the plurality of first cells, and are arranged in parallel with the plurality of first cell tap cooling devices;
A plurality of third cell tap cooling devices physically and electrically connected to second cell taps of each of two adjacent second cells among the plurality of second cells;
A plurality of fourth cell tap cooling devices that are physically and electrically connected to second cell taps of each of two adjacent second cells among the plurality of second cells, and are arranged in parallel with the plurality of third cell tap cooling devices;
A positive terminal attached to any one first cell tap cooling device provided at one end of the plurality of first cell tap cooling devices;
Attached to any one second cell tap cooling device provided at one end of the plurality of second cell tap cooling devices, and any third cell tap cooling device provided at one end of the plurality of third cell tap cooling devices, A connection terminal physically and electrically connecting the one second cell tap cooling device and the one third cell tap cooling device; And
And a negative terminal attached to any one fourth cell tap cooling device provided at one end of the plurality of fourth cell tap cooling devices,
Each of the positive and negative terminals is located on the opposite side of the connection terminal with respect to the plurality of first cells, and is located on the same side with respect to the plurality of first cells. Battery pack placed on one side.
delete The method of claim 1,
The plurality of second cell tap cooling devices are disposed closer to the plurality of second cells than the plurality of first cell tap cooling devices,
The plurality of third cell tap cooling devices are disposed closer to the plurality of first cells than the plurality of fourth cell tap cooling devices, a battery pack having a positive terminal and a negative terminal disposed on one side without a wiring operation.
The method of claim 1,
Each of the first cell tap cooling device, the second cell tap cooling device, the third cell tap cooling device, and the fourth cell tap cooling device,
A bus bar including a bus bar body, a cell tab accommodating portion formed under the bus bar body and accommodating at least a portion of the cell tab, and a flow path lower portion recessed in the upper surface of the bus bar body; And
A positive terminal without wiring, comprising a cover body connected to the upper side of the busbar body, and a cover including a flow path upper portion which is recessed in the lower surface of the cover body and connected to the lower side of the flow path to form a flow path, and Battery pack with the negative terminal placed on one side.
The method of claim 4,
Each of the first cell tap cooling device, the second cell tap cooling device, the third cell tap cooling device, and the fourth cell tap cooling device,
A fastening terminal provided in the cell tab receiving portion; And
A battery pack in which a positive terminal and a negative terminal are disposed on one side without wiring, further comprising a pressing member penetrating the busbar body and protruding at least a portion of the cell tab receiving portion to press the fastening terminal downward .
The method of claim 5,
The cell tab accommodating portion has a shape that becomes narrower as it goes downward, and supports the fastening terminal, wherein a positive terminal and a negative terminal are disposed on one side without a wiring operation.
The method of claim 6,
The fastening terminal has a shape that becomes narrower as it goes downward, and the positive terminal and the negative terminal are disposed on one side without a wiring operation, which is capable of surface contact with the cell tab receiving portion.

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