CN212648341U - Battery module with cross-circuit board connecting sheet - Google Patents
Battery module with cross-circuit board connecting sheet Download PDFInfo
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- CN212648341U CN212648341U CN202021769005.8U CN202021769005U CN212648341U CN 212648341 U CN212648341 U CN 212648341U CN 202021769005 U CN202021769005 U CN 202021769005U CN 212648341 U CN212648341 U CN 212648341U
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- battery
- circuit board
- cross
- connecting sheet
- central axis
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a battery module with stride circuit board connection piece, include a plurality of batteries, output pole connection piece, stride circuit board connection piece, second connection piece and circuit board. The battery takes the central axis as the center, is arranged along the direction of the central axis and is tightly attached to each other, and the battery poles of the two electrodes are respectively positioned at the two sides of the central axis. The batteries are connected in series through the cross circuit board connecting sheet and the second connecting sheet to form the battery pack. The circuit board is in a long strip shape, is arranged on the top surface of the battery along the central axis direction and spans each battery. The cross-circuit board connecting sheet crosses over the circuit board. Foam gaskets are arranged at the crossed parts of the circuit board and the cross circuit board connecting sheets. The foam pad is clamped between the circuit board and the cross-circuit board connecting sheet. The utility model discloses the cotton backing plate of bubble can alleviate the wearing and tearing of circuit board and realize thermal-insulated to the circuit board.
Description
Technical Field
The utility model relates to a square battery's battery module assembly.
Background
Patent document CN 110931694 a discloses a battery module with an electrode output on the same side. The battery module output by the same side electrode requires an odd number of square batteries arranged in sequence. In the actual production of the battery module of the power battery pack, the size of the battery module is limited by the size of the battery box of the power battery pack, and the size of the battery module needs to be referred to the size of the battery box of the power battery pack. And the size of the battery is limited by the battery manufacturer. Therefore, in actual assembly, it is difficult for the size of the battery module to just accommodate an odd number of batteries. Generally, the battery module needs to be plugged into the battery as much as possible based on the energy density of the power battery pack. Under a certain size of the power battery pack battery box, the size of the corresponding battery module may accommodate an even number of batteries. When the battery module includes an even number of batteries, the same-side electrode output is realized by referring to the battery series connection scheme disclosed in patent document CN 110931694 a, and the bus bar inevitably crosses the central axis. And the central axis is the location where the circuit board is mounted. The circuit board is generally a flexible circuit board and is used for collecting the temperature and the voltage of each battery of the battery module. That is, in this case, the bus bars need to cross and overlap the circuit board. Obviously, at this time, an insulation space is required between the bus bar and the circuit board. However, if the bus bar and the circuit board are isolated from each other by adopting common materials, the problem of abrasion caused by relative movement of the bus bar and the circuit board exists.
Disclosure of Invention
The utility model discloses the problem that will solve: when the battery module comprises an even number of batteries, the technical scheme disclosed in patent document CN 110931694 a is adopted to realize the output of the electrodes on the same side, which causes a problem caused by the situation that the bus bar crosses the circuit board.
In order to solve the above problem, the utility model discloses a scheme as follows:
a battery module with a cross-circuit board connecting sheet comprises a plurality of batteries, an output electrode connecting sheet, a cross-circuit board connecting sheet, a second connecting sheet and a circuit board; the electric battery takes a central axis as a center and is arranged along the direction of the central axis, and battery pole columns of two electrodes of the electric battery are respectively positioned at two sides of the central axis; the batteries are connected in series through a circuit board spanning connecting sheet and a second connecting sheet to form a battery pack, the positive electrode and the negative electrode of the battery pack formed by the series connection are respectively connected with the two output electrode connecting sheets, and are connected with the output electrodes of the battery module through the output electrode connecting sheets; the circuit board is arranged on the top surface of the battery along the central axis direction, so that two battery poles of each battery are respectively positioned on two sides of the circuit board; the second connecting sheet is positioned on one side of the circuit board; the cross-circuit board connecting sheet crosses the circuit board; a foam gasket is arranged at the crossed part of the circuit board and the cross-circuit board connecting sheet; the foam pad is clamped between the circuit board and the cross-circuit board connecting sheet.
Furthermore, the battery is a square battery, and battery poles of two electrodes of the battery are positioned on the top surface of the battery; the circuit board is in a strip shape and spans each battery.
Further, the number of the batteries is N; along the direction of the central axis, battery poles of the 2i + 1 th battery anode and the 2i + 2 th battery anode are positioned on the same side of the central axis, wherein i is more than or equal to 0 and less than or equal to N-1; the battery poles of the 2i + 2 th battery anode and the 2i + 3 th battery cathode are positioned on the same side of the central axis, wherein i is more than or equal to 0 and less than or equal to N-2.
Further, along the central axis direction, a battery post of the 1 st battery anode and a battery post of the 2 nd battery cathode are respectively connected with the output electrode connecting sheet; the battery pole of the 2i + 2 th battery anode is connected in series with the battery pole of the 2i + 4 th battery cathode through the second connecting sheet, wherein i is more than or equal to 0 and less than or equal to N-1; the battery pole of the 2i + 1 th battery cathode is connected in series with the battery pole of the 2i + 3 th battery anode through the second connecting sheet, wherein i is more than or equal to 0 and less than or equal to N-1; the battery pole of the 2N-1 battery cathode is connected in series with the battery pole of the 2N battery anode through the cross circuit board connecting sheet.
Further, the cross-circuit board connecting sheet spans over the circuit board and presses the foam pad and the circuit board.
Further, the cross-board connection piece has a vertical portion perpendicular to the board.
Furthermore, the foam pad is a square sheet made of foam, and the thickness of the foam pad is 0.2-2.0 mm.
Further, the dimension of the foam gasket is larger than the width of the vertical part of the cross circuit board connecting sheet, so that the edge of the foam gasket protrudes out of the edge of the vertical part of the cross circuit board connecting sheet; the size of the foam pad is larger than the width of the circuit board, so that the edge of the foam pad protrudes out of the edge of the circuit board.
Further, the width of the edge of the foam gasket protruding out of the edge of the vertical part of the connecting sheet of the circuit board is not less than 0.2 mm; the width of the edge of the foam pad protruding out of the edge of the circuit board is not less than 0.2 mm.
The technical effects of the utility model are as follows:
1. the foam material is relatively flexible and reduces the wear experienced by the circuit board during relative movement between the circuit board and the circuit-spanning sheet.
2. The foam material has strong heat insulation performance, so that the heating of the cross-circuit board connecting sheet can insulate the circuit board through the foam material.
3. The cross-circuit board connecting sheet presses and holds the circuit board through the foam, and plays a role in limiting and fixing the circuit board.
Drawings
Fig. 1 is a schematic structural diagram of the battery module according to the present invention.
Fig. 2 is an exploded view of the mid-span circuit board connection pads and foam pads of fig. 1.
Fig. 3 is a schematic top view of fig. 1.
FIG. 4 is a schematic diagram of the connection of a cross-circuit board connection pad, a foam gasket, and a circuit board.
Wherein the content of the first and second substances,
1 is a battery, 11 is a battery post;
21 is a positive output electrode connecting piece, and 22 is a negative output electrode connecting piece;
31 is a cross-board connection pad, 311 is a vertical portion, 32 is a second connection pad;
41 is a circuit board;
5 is a foam pad;
x is a central axis.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, 2 and 3, a battery module with a cross-circuit-board connecting sheet includes a plurality of batteries 1 and an electrical component accommodated in a module accommodating cavity. The electrical component includes an output electrode connecting piece, a cross-circuit board connecting piece 31, a second connecting piece 32, and a circuit board 41. The battery 1 is a prismatic battery with battery posts 11 of both electrodes on its top surface. There are an even number of cells 1. The even number of batteries 1 are arranged along the central axis X and are closely attached to each other with the central axis X as the center, and the battery poles 11 of the two electrodes are respectively positioned at two sides of the central axis X. The batteries 1 are connected in series through a cross circuit board connecting sheet 31 and a second connecting sheet 32 to form a battery pack, and the positive electrode and the negative electrode of the battery pack formed by the series connection are respectively connected with two output electrode connecting sheets and are connected with the output electrode of the battery module through the output electrode connecting sheets.
Specifically, referring to fig. 3, even number of cells 1, the number of cells 1 may be 2N. Along the direction of the central axis X, the positive pole 11 of the 2i + 1 th battery 1 and the positive pole 11 of the 2i + 2 nd battery 1 are positioned on the same side of the central axis X, wherein i is more than or equal to 0 and less than or equal to N-1; the battery post 11 of the positive electrode of the 2i + 2 th battery 1 and the negative electrode of the 2i + 3 th battery 1 are positioned on the same side of the central axis X, wherein i is more than or equal to 0 and less than or equal to N-2. That is, every two adjacent batteries are in one group, the positive and negative electrodes of the batteries 1 in the same group are positioned on the same side of the central axis X, and the positive and negative electrodes of the batteries 1 in the adjacent groups are respectively positioned on the opposite sides of the central axis X. Along the axis X direction, the 1 st battery 1 positive pole's battery utmost point post 11 and the 2 nd battery 1 negative pole's battery utmost point post 11 connect the output connection piece respectively. Specifically, the output electrode connection pieces include a positive output electrode connection piece 21 and a negative output electrode connection piece 22. Along the axis X direction, the 1 st battery 1 positive electrode battery post 11 is connected with the positive electrode of the output electrode of the battery module through the positive output electrode connecting sheet 21, and the 2 nd battery 1 negative electrode battery post 11 is connected with the negative electrode of the output electrode of the battery module through the negative output electrode connecting sheet 22. The series connection between the battery 1 and the battery 1 is as follows: along the direction of the central axis X, the battery post 11 of the positive pole of the 2i + 2 th battery 1 is connected in series with the battery post 11 of the negative pole of the 2i + 4 th battery 1 through a second connecting sheet 32, wherein i is more than or equal to 0 and less than or equal to N-1; the battery post 11 of the negative electrode of the 2i + 1 th battery 1 is connected in series with the battery post 11 of the positive electrode of the 2i + 3 th battery 1 through a second connecting sheet 32, wherein i is more than or equal to 0 and less than or equal to N-1; the battery post 11 of the negative electrode of the 2N-1 battery 1 is connected in series with the battery post 11 of the positive electrode of the 2N battery 1 through a cross circuit board connecting sheet 31.
Obviously, since the battery post 11 of the negative electrode of the 2N-1 th battery 1 and the battery post 11 of the positive electrode of the 2N-1 th battery 1 are respectively located on both sides of the central axis X, the cross-circuit-board connecting sheet 31 necessarily needs to cross the central axis X.
The circuit board 41 is a flexible circuit board, i.e., an FPC, for collecting the temperature and voltage of each battery 1 of the battery module. The circuit board 41 is in a long strip shape, is disposed on the top surface of the battery 1 along the central axis X direction, and spans each battery 1, so that the two battery posts 11 of each battery 1 are respectively located on two sides of the circuit board 41. The second connecting pieces 32 are located on one side of the circuit board 41, that is, each second connecting piece 32 is located on both sides of the circuit board 41; the cross-board connector 31 then crosses the circuit board 41. The foam gasket 5 is arranged at the intersection of the circuit board 41 and the cross-circuit board connecting sheet 31, and the foam gasket 5 is used for realizing the insulation and separation between the circuit board 41 and the cross-circuit board connecting sheet 31. The foam pad 5 is a sheet made of foam.
Referring to fig. 4, in the present embodiment, the foam pad 5 is a square sheet with a thickness of 0.2 to 2.0 mm. The foam gasket 5 is sandwiched between the circuit board 41 and the cross-board connector tab 31. The cross-board connection piece 31 has a vertical portion 311 perpendicular to the circuit board 41. The vertical portion 311 of the cross-board connection tab 31 spans over the circuit board 41 and presses against the foam gasket 5 and the circuit board 41. The dimension of the foam pad 5 is larger than the width of the vertical part 311 of the cross circuit board connecting sheet 31, so that the edge of the foam pad 5 protrudes out of the edge of the vertical part 311 of the cross circuit board connecting sheet 31; the foam pad 5 is sized larger than the width of the circuit board 41 such that the edge of the foam pad 5 protrudes beyond the edge of the circuit board 41. Wherein, the width D1 of the edge of the foam pad 5 protruding from the edge of the vertical part 311 of the cross circuit board connecting sheet 31 is not less than 0.2 mm. The width D2 of the edge of the foam pad 5 protruding out of the edge of the circuit board 41 is not less than 0.2 mm.
Claims (10)
1. A battery module with a cross-circuit board connecting sheet is characterized by comprising a plurality of batteries (1), an output electrode connecting sheet, a cross-circuit board connecting sheet (31), a second connecting sheet (32) and a circuit board (41); the battery (1) takes a central axis as a center and is arranged along the central axis, and battery poles (11) of two electrodes of the battery are respectively positioned at two sides of the central axis; the batteries (1) are connected in series through a cross-circuit board connecting sheet (31) and a second connecting sheet (32) to form a battery pack, the positive electrode and the negative electrode of the battery pack formed by connecting in series are respectively connected with the two output electrode connecting sheets, and are connected with the output electrodes of the battery module through the output electrode connecting sheets; the circuit board (41) is arranged on the top surface of the batteries (1) along the central axis direction, so that the two battery poles (11) of each battery (1) are respectively positioned on two sides of the circuit board (41); the second connecting sheet (32) is positioned on one side of the circuit board (41); a cross-circuit-board connecting sheet (31) crosses the circuit board (41); a foam gasket (5) is arranged at the crossed part of the circuit board (41) and the circuit board crossing connecting sheet (31); the foam pad (5) is clamped between the circuit board (41) and the cross-circuit board connecting sheet (31).
2. The battery module with a cross-circuit board connection tab according to claim 1, wherein the battery (1) is a prismatic battery having battery posts (11) of both electrodes on its top surface; the circuit board (41) is in a strip shape and spans each battery (1).
3. The battery module with a connection tab across circuit boards of claim 1 wherein the number of batteries (1) is 2N; along the direction of the central axis, the positive pole of the 2i + 1 th battery (1) and the positive pole of the 2i + 2 th battery (1) are positioned on the same side of the central axis, wherein i is more than or equal to 0 and less than or equal to N-1; the battery post (11) of the anode of the 2i + 2 th battery (1) and the cathode of the 2i + 3 th battery (1) are positioned on the same side of the central axis, wherein i is more than or equal to 0 and less than or equal to N-2.
4. The battery module with the cross-circuit-board connecting piece according to claim 2, wherein along the central axis direction, a battery post (11) of the positive electrode of the 1 st battery (1) and a battery post (11) of the negative electrode of the 2 nd battery (1) are respectively connected with the output-electrode connecting piece; the battery post (11) of the positive electrode of the 2i + 2 th battery (1) is connected in series with the battery post (11) of the negative electrode of the 2i + 4 th battery (1) through the second connecting sheet (32), wherein i is more than or equal to 0 and less than or equal to N-1; the battery post (11) of the negative electrode of the 2i + 1 th battery (1) is connected in series with the battery post (11) of the positive electrode of the 2i + 3 th battery (1) through the second connecting sheet (32), wherein i is more than or equal to 0 and less than or equal to N-1; the battery post (11) of the negative electrode of the 2N-1 battery (1) is connected in series with the battery post (11) of the positive electrode of the 2N battery (1) through the cross-circuit board connecting sheet (31).
5. The battery module with the cross-circuit-board connecting tab as recited in claim 1, 2, 3 or 4, wherein the cross-circuit-board connecting tab (31) spans over the circuit board (41) and presses the foam gasket (5) and the circuit board (41).
6. The battery module with the cross-circuit-board connecting tab as recited in claim 1, or 2, or 3 or 4, wherein the cross-circuit-board connecting tab (31) has a vertical portion (311) perpendicular to the circuit board (41).
7. The battery module with the cross-circuit-board connection tab of claim 5, wherein the cross-circuit-board connection tab (31) has a vertical portion (311) perpendicular to the circuit board (41).
8. The battery module with the cross-circuit-board connecting sheet according to claim 7, wherein the foam gasket (5) is a square sheet made of foam and has a thickness of 0.2-2.0 mm.
9. The battery module with a cross-board connection tab of claim 8, wherein the foam gasket (5) has a dimension greater than the width of the vertical portion (311) of the cross-board connection tab (31) such that an edge of the foam gasket (5) protrudes beyond an edge of the vertical portion (311) of the cross-board connection tab (31); the size of the foam pad (5) is larger than the width of the circuit board (41), so that the edge of the foam pad (5) protrudes out of the edge of the circuit board (41).
10. The battery module with a cross-circuit board connection tab of claim 9 wherein the width of the edge of the foam gasket (5) protruding beyond the edge of the vertical portion (311) of the cross-circuit board connection tab (31) is not less than 0.2 mm; the width of the edge of the foam pad (5) protruding out of the edge of the circuit board (41) is not less than 0.2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021769005.8U CN212648341U (en) | 2020-08-22 | 2020-08-22 | Battery module with cross-circuit board connecting sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021769005.8U CN212648341U (en) | 2020-08-22 | 2020-08-22 | Battery module with cross-circuit board connecting sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212648341U true CN212648341U (en) | 2021-03-02 |
Family
ID=74787582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021769005.8U Active CN212648341U (en) | 2020-08-22 | 2020-08-22 | Battery module with cross-circuit board connecting sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212648341U (en) |
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2020
- 2020-08-22 CN CN202021769005.8U patent/CN212648341U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220125 Address after: 215500 room 808, No. 1, Southeast Avenue, Changshu high tech Industrial Development Zone, Changshu, Suzhou, Jiangsu Patentee after: Jiangsu Zhengli new energy battery technology Co.,Ltd. Address before: No.15, Huashang Road, Airport Economic Development Zone, Jiangning District, Nanjing City, Jiangsu Province Patentee before: Jiangsu Tafel Power System Co.,Ltd. Patentee before: JIANGSU TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. Patentee before: DONGGUAN TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right |