CN216597888U - Electricity core connection piece and electric core group - Google Patents
Electricity core connection piece and electric core group Download PDFInfo
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- CN216597888U CN216597888U CN202121711060.6U CN202121711060U CN216597888U CN 216597888 U CN216597888 U CN 216597888U CN 202121711060 U CN202121711060 U CN 202121711060U CN 216597888 U CN216597888 U CN 216597888U
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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
Abstract
A battery core connecting sheet and a battery core group relate to the field of batteries. The battery cell is provided with a plurality of battery cells which are arranged in a multi-row and multi-column array form, and the space between every two adjacent battery cells is equal; the positive poles of a plurality of electric cores and negative pole terminal surface syntropy, positive connection piece begin with every a plurality of electric core positive poles according to snakelike connected mode from the first electric core positive pole of first line, and negative pole electric core connection piece begins with every a plurality of electric core negative poles according to snakelike connected mode from the first electric core negative pole of last line. The sum of the connection lengths from each battery cell to the total positive output end and the total negative output end is consistent, so that the connected resistance is consistent, and the condition that the capacity of each battery cell is inconsistent after multiple charge-discharge cycles is avoided. Therefore, the occurrence of the circulation condition between the battery cores can be avoided, and the service life and the reliability of the battery core module are improved.
Description
Technical Field
The utility model relates to the field of batteries, in particular to a battery cell connecting sheet and a battery cell group.
Background
In the existing battery cell parallel connection structure, the planar shape of the positive electrode or negative electrode battery cell connecting piece is generally in a shape like the Chinese character 'mu' or 'tian' or other shapes, and then the positive electrode or negative electrode battery cell connecting piece is provided with a pin at one position to be connected with the total positive or total negative output end of the battery cell module. Such a connection has disadvantages: the connection lengths from the battery cores to the total positive output end and the total negative output end are different; be close to the electric core of connection piece and total positive and total negative output promptly, its connection length is short, keep away from the electric core of connection piece and total positive and total negative output, its connection length is long, it is inconsistent to connect length like this, the resistance that leads to connecting is inconsistent, and then the charge-discharge current that leads to each electric core is inconsistent, cause the inconsistent condition of each electric core capacity after carrying out many times charge-discharge circulation, the circulation condition takes place between the electric core, the life-span and the reliability of electric core module have been reduced.
SUMMERY OF THE UTILITY MODEL
In order to make the sum of the connection lengths from each electric core in the electric core group to the total positive and total negative output ends consistent, make the connected resistances consistent and avoid the situation that the capacities of the electric cores are inconsistent after a plurality of charging and discharging cycles, the utility model adopts the following technical scheme:
the utility model provides an electricity core connection piece, includes the electricity core connection piece, and electricity core connection piece is snakelike structure, electricity core connection piece with electricity core connection can be so, and the distance of the positive pole of each electricity core to total positive output is the same with the negative pole to the total length sum of being connected of negative output, and enables the connecting resistance of each electricity core the same.
A cell group comprises cells and the cell connecting sheets, wherein the two cell connecting sheets comprise a positive cell connecting sheet and a negative cell connecting sheet, the number of the cells is multiple, the cells are arranged in a multi-row and multi-column array form, and the space between every two adjacent cells is equal; the end faces of the positive electrodes of the plurality of battery cores and the negative electrodes of the plurality of battery cores are in the same direction; the cell connecting sheet is connected with the positive electrode of each cell in a snake-shaped connection mode from the positive electrode of the first cell in the first line, and is connected to the positive electrode of the last cell in the last line to output the total positive electrode; the negative electrode electric core connecting sheet is connected with each electric core negative electrode in a snake-shaped connection mode from the first electric core negative electrode in the last line, and the first electric core negative electrode in the first line is connected to output of the total negative electrode.
Specifically, a plurality of battery cell anodes and cathodes are respectively provided with an anode welding point and a cathode welding point, the anode battery cell connecting sheet is welded with the battery cell anode welding point, and the cathode battery cell connecting sheet is welded with the battery cell cathode welding point.
In summary, the apparatus of the present invention has the following advantages: the sum of the connection lengths from each battery cell to the total positive output end and the total negative output end is consistent, so that the connected resistance is consistent, and the condition that the capacities of the battery cells are inconsistent after multiple charge-discharge cycles is avoided. Therefore, the occurrence of the circulation condition between the battery cores can be avoided, and the service life and the reliability of the battery core module are improved.
Drawings
Fig. 1 is a schematic structural view of a cell connecting sheet and a cell group;
FIG. 2 is a top view of a cell connecting tab and a cell pack;
reference numerals: cell number 11; cell number 22; cell number 33; number 44 electrical core; a No. 55 cell; number 66 electrical core; cell number 77; a number 88 cell; a No. 99 cell; cell number 1010; 11 positive cell connecting sheet; 12 negative pole electric core connecting sheet; 13 welding points.
Detailed Description
The present invention is further described below with reference to fig. 1 to 2.
The utility model provides an electric core connection piece, electric core connection piece are snakelike structure, and electric core connection piece is connected with electric core and can makes, and the distance of the positive pole of each electric core to total positive output is the same with the negative pole to the total length sum of being connected of negative output, and enables the resistance of the connection of each electric core the same.
The utility model provides an electric core group, includes electric core, still includes above-mentioned electric core connection piece, and the electric core connection piece has two, including anodal electric core connection piece and negative pole electric core connection piece, and electric core has 10, and 10 electric cores are arranged according to the array form of 2 lines 5 rows, and in addition, adjacent interval equals between each electric core. And the end faces of the positive electrode and the negative electrode of 10 cells are in the same direction. The positive electrode cell connecting piece 11 is connected with the positive electrode of each cell according to a snake-shaped connecting mode from the positive electrode of the first cell in the first row, namely, the positive electrode cell connecting piece 11 is connected with the positive electrode of each cell in the first row from the cell 1, is connected with the positive electrode of the cell in the first row in sequence, is connected to the 5 positive electrode of the cell 5, and is connected with the positive electrode of the cell 6 corresponding to the cell position 5, the connecting mode of the first row is repeated, and the output is the total positive output after being connected to the cell 10. The negative pole electricity core connection piece 12 begins from the first electricity core negative pole of last line, is connected with every a plurality of electric core negative poles according to snakelike connected mode, and negative pole electricity core connection piece 12 begins from 10 electric cores 10 promptly, is connected with the electric core negative pole of every second line in proper order, is connected to behind 6 electric cores 6 negative poles, again with 6 electric core position 6 corresponding 5 electric cores 5 negative poles be connected, the connected mode of repeated first line, output is total negative pole output after being connected to 1 electric core. Be equipped with positive pole welding point and negative pole welding point on the positive pole of electric core and the negative pole respectively, the accurate welding of positive pole electric core connection piece 11 and the positive pole welding point of electric core, the accurate welding of negative pole electric core connection piece 12 and the negative pole welding point of electric core.
By applying the electric core connecting sheet to the electric core group, the sum of the connecting lengths from the positive electrode to the total positive output end and the connecting lengths from the negative electrode to the total negative output end of each electric core are the same, so that the connecting resistance of each electric core is the same. For example, the distance from the negative electrode of the battery cell 2 No. 2 to the total negative output end plus the distance from the positive electrode of the battery cell 2 No. 2 to the total positive output end is equal to the distance from the negative electrode of the battery cell 3 No. 3 to the total negative output end plus the distance from the positive electrode of the battery cell 3 No. 3 to the total positive output end, so that the connection resistance of the battery cell 2 No. 2 is the same as that of the battery cell 3 No. 3.
In summary, the utility model has the following advantages: the sum of the connection lengths from each battery cell to the total positive output end and the total negative output end is consistent, so that the connected resistance is consistent, and the condition that the capacities of the battery cells are inconsistent after multiple charge-discharge cycles is avoided. Such connection structure can also avoid the emergence of the circulation condition between the electric core, improves the life-span and the reliability of electric core module.
It should be understood that the detailed description of the utility model is merely illustrative of the utility model and is not intended to limit the utility model to the specific embodiments described. It will be appreciated by those skilled in the art that the present invention may be modified or substituted equally as well to achieve the same technical result; as long as the use requirements are met, the method is within the protection scope of the utility model.
Claims (3)
1. The utility model provides an electricity core connection piece, includes electricity core connection piece, its characterized in that, electricity core connection piece is connected with electric core and can makes, and the distance of the positive pole of each electricity core to total positive output is the same with the length sum of being connected of negative pole to total negative output, and enables the connecting resistance of each electricity core the same.
2. The battery cell group comprises battery cells and is characterized by further comprising two battery cell connecting sheets of claim 1, wherein the two battery cell connecting sheets comprise a positive battery cell connecting sheet and a negative battery cell connecting sheet, the number of the battery cells is multiple, the battery cells are arranged in an array form of multiple rows and multiple columns, and the distance between every two adjacent battery cells is equal; the end faces of the positive electrodes of the battery cells and the negative electrodes of the battery cells are in the same direction; the cell connecting sheet is connected with the positive electrode of each cell in a snake-shaped connection mode from the positive electrode of the first cell in the first line, and is connected to the positive electrode of the last cell in the last line to output the total positive electrode; the negative electrode electric core connecting sheet is connected with each electric core negative electrode in a snake-shaped connection mode from the first electric core negative electrode in the last line, and the first electric core negative electrode in the first line is connected to output of the total negative electrode.
3. The battery pack of claim 2, wherein the positive and negative electrodes of the plurality of cells are provided with positive and negative welds, respectively, and the positive cell connecting tab is welded to the positive weld and the negative cell connecting tab is welded to the negative weld.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121711060.6U CN216597888U (en) | 2021-07-26 | 2021-07-26 | Electricity core connection piece and electric core group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121711060.6U CN216597888U (en) | 2021-07-26 | 2021-07-26 | Electricity core connection piece and electric core group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216597888U true CN216597888U (en) | 2022-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121711060.6U Active CN216597888U (en) | 2021-07-26 | 2021-07-26 | Electricity core connection piece and electric core group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216597888U (en) |
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2021
- 2021-07-26 CN CN202121711060.6U patent/CN216597888U/en active Active
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