CN219608976U - Multi-serial-parallel battery cell testing jig - Google Patents
Multi-serial-parallel battery cell testing jig Download PDFInfo
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- CN219608976U CN219608976U CN202223474449.0U CN202223474449U CN219608976U CN 219608976 U CN219608976 U CN 219608976U CN 202223474449 U CN202223474449 U CN 202223474449U CN 219608976 U CN219608976 U CN 219608976U
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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 relates to the field of battery cell charge and discharge tests, in particular to a multi-serial-parallel battery cell test fixture, which comprises a middle frame plate for fixing the middle part of each battery cell, wherein two sides of the middle frame plate are detachably connected with a plurality of single-serial-parallel press blocks, the single-serial-parallel press blocks are fixedly connected with single-serial-parallel nickel sheets connected with each battery cell, and each battery cell is electrically connected with the single-serial-parallel press block through the single-serial-parallel nickel sheets; the single serial-parallel nickel sheet is provided with a plurality of positive electrode contact ends and a plurality of negative electrode contact ends; the positive electrode contact end is used for abutting against the positive electrode of part of the battery cells so as to realize parallel connection of part of the battery cells; the negative electrode contact end is used for abutting against a part of the negative electrodes of the battery cells so as to realize parallel connection of the part of the battery cells. The multi-serial-parallel battery cell testing jig solves the problems of overhigh cost, overlow efficiency and inconvenient testing of the multi-serial-parallel battery cell in charge-discharge cycle test through the mutual matching of the middle frame plate, the single serial-parallel press block and the single serial-parallel nickel sheet.
Description
Technical Field
The utility model relates to the field of battery cell charge and discharge testing, in particular to a multi-serial-parallel battery cell testing jig.
Background
The voltage of a single cell is generally 2V-5V, in order to meet the requirements of higher voltage and larger capacity, a plurality of cells are required to be connected in series and parallel to realize the effects of high capacity and high voltage output of the cell group, in order to ensure the consistency of the cells after being connected in series and parallel, the voltage can be stably output, the cell group connected in series and parallel is required to be subjected to charge-discharge cyclic test before leaving the factory, a plurality of single cells and related materials are assembled into a cell test module, namely, each cell is installed on a bracket, then all the cells are welded with nickel sheets, the nickel sheets are connected with leads, after the assembly is finished, the cell test module is required to be subjected to charge-discharge cyclic test, and when the single cell or the single serial-parallel cell has a problem, the cell test module is required to be disassembled to take out good cells for secondary use, the process of disassembling the module is time-consuming, and has safety risks, and when the single cell is disassembled into a single cell to be recovered, the nickel sheet and other materials of the module are basically scrapped.
Disclosure of Invention
The utility model provides a multi-serial parallel cell testing jig, which can recycle related materials such as nickel plates and the like for multiple times and is convenient for installing cells so as to solve the problems of overhigh cost, overlow efficiency and inconvenient testing of charging and discharging cycle testing of the multi-serial parallel cells.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the multi-serial-parallel cell testing jig comprises a middle frame plate for fixing the middle part of each cell, wherein two sides of the middle frame plate are detachably connected with a plurality of single-serial-parallel press blocks, the single-serial-parallel press blocks are fixedly connected with single-serial-parallel nickel sheets connected with each cell, and each cell is electrically connected with the single-serial-parallel press blocks through the single-serial-parallel nickel sheets;
the single serial-parallel nickel sheet is provided with a plurality of positive electrode contact ends and a plurality of negative electrode contact ends;
the positive electrode contact end is used for abutting against the positive electrode of part of the battery cells so as to realize parallel connection of part of the battery cells; the negative electrode contact end is used for abutting against a part of the negative electrodes of the battery cells so as to realize parallel connection of the part of the battery cells; the partial electric cores which are abutted with the positive electrode contact end and the negative electrode contact end respectively form an electric core parallel unit;
each single serial-parallel nickel sheet is connected with two adjacent parallel cells in an end-to-end mode, wherein the adjacent two parallel cells are abutted with the single serial-parallel nickel sheet to form a series connection.
Preferably, the single-string parallel nickel sheet is fixedly connected with a single-string parallel lead.
Preferably, the battery pack further comprises a protection plate, and each single-string parallel lead is sequentially connected with the voltage acquisition line of the protection plate, so that each single-string parallel lead is converged on the protection plate to lead out a total test line for connection with the charge-discharge cycle test device.
Preferably, the surface of the single serial-parallel pressing block is fixedly provided with a pressing piece for pressing the battery cell.
Preferably, the pressing piece is a spring and a spring groove for installing the spring, one end of the spring is fixedly connected with the surface of the single serial-parallel pressing block, and the other end of the spring is fixedly connected with the single serial-parallel nickel sheet.
Preferably, the single serial-parallel press block is provided with a positioning column, and the single serial-parallel press block is also provided with a positioning hole matched with the positioning column.
Preferably, the middle frame plate is provided with a through hole for the positioning column to penetrate through and a mounting hole for the power supply core to penetrate through.
Preferably, the device further comprises an upper pressing plate and a lower pressing plate which play a role of protecting the jig, clamping columns are arranged on the upper pressing plate and the lower pressing plate, and clamping holes matched with the clamping columns are formed in the middle frame plate.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model solves the problems of overhigh cost, low efficiency and inconvenient test of charging and discharging cycle test of multiple serial-parallel battery cells through the mutual coordination of the middle frame plate, the single serial-parallel press block and the single serial-parallel nickel sheet; the plurality of single serial-parallel press blocks are arranged to press the plurality of battery cells, and the adjacent two battery cell parallel units which are abutted with the single serial-parallel nickel plates are connected end to form a series connection through the positive electrode contact end and the negative electrode contact end of the single serial-parallel nickel plates, so that the plurality of battery cells are assembled into the serial-parallel battery cell group without welding; when the battery cell testing module is used, only the single serial-parallel pressing block on one side of the middle frame plate is required to be disassembled, then the battery cell is placed in the middle frame plate, and the disassembled single serial-parallel pressing blocks are installed in a staggered mode, so that the battery cell testing module can be assembled with the middle frame plate, the single serial-parallel pressing block, the single serial-parallel nickel sheet, a lead wire and the like conveniently, the testing efficiency is improved, the battery cell can be assembled and disassembled conveniently, the battery cell can be used repeatedly, and the testing cost is reduced.
Drawings
Fig. 1 is a schematic diagram of a side structure of a middle frame plate of a multi-serial-parallel cell testing fixture according to an embodiment of the present utility model.
Fig. 2 is a schematic diagram of a partial structure of a multi-serial-parallel battery cell testing fixture according to an embodiment of the present utility model.
Fig. 3 is a schematic diagram of another side structure of a middle frame plate of a multi-serial-parallel cell testing fixture according to an embodiment of the present utility model.
Fig. 4 is a schematic structural diagram of a multi-serial-parallel electrical core testing fixture according to an embodiment of the present utility model.
Fig. 5 is a schematic structural diagram of a single serial-parallel block of a multi-serial-parallel cell testing fixture according to an embodiment of the present utility model.
Fig. 6 is a schematic structural diagram of a middle frame plate of a multi-serial-parallel battery cell testing fixture according to an embodiment of the present utility model.
Icon marking: the battery comprises a 1-middle frame plate, 2-battery cores, 201-a last battery core parallel unit, 202-a next battery core parallel unit, 3-single serial-parallel pressing blocks, 4-single serial-parallel nickel sheets, 401-negative electrode contact ends, 402-positive electrode contact ends, 5-positive electrodes, 6-negative electrodes, 7-single serial-parallel lead wires, 8-protection plates, 9-springs, 10-spring grooves, 11-positioning columns, 12-positioning holes, 13-through holes, 14-mounting holes, 15-upper pressing plates, 16-lower pressing plates, 17-clamping columns and 18-clamping holes.
Detailed Description
In order to make the objects, features and advantages of the present utility model more obvious and understandable, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, and it is apparent that the embodiments described below are only some embodiments of the present utility model, not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it will be understood that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.
Furthermore, the terms "long," "short," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship based on that shown in the drawings, for convenience of description of the present utility model, and are not intended to indicate or imply that the apparatus or elements referred to must have this particular orientation, operate in a particular orientation configuration, and thus should not be construed as limiting the utility model.
The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.
Referring to fig. 1 to 3, a multi-serial-parallel cell testing jig comprises a middle frame plate 1 for fixing the middle part of each cell 2, wherein two sides of the middle frame plate 1 are detachably connected with a plurality of single-serial-parallel press blocks 3, the single-serial-parallel press blocks 3 are fixedly connected with single-serial-parallel nickel sheets 4 connected with each cell 2, and each cell 2 is electrically connected with the single-serial-parallel press blocks 3 through the single-serial-parallel nickel sheets 4;
the single serial-parallel nickel sheet 4 is provided with a plurality of positive electrode contact ends 402 and a plurality of negative electrode contact ends 401;
the positive electrode contact end 402 is used for abutting against a part of the battery cell positive electrode 5 so as to realize parallel connection of part of battery cells; the negative electrode contact end 401 is used for abutting against a part of the battery cell negative electrode 6 so as to realize parallel connection of part of battery cells; the partial electric cores which are abutted with the positive electrode contact end 402 and the negative electrode contact end 401 respectively form an electric core parallel unit;
each single serial-parallel nickel sheet 4 connects two adjacent parallel cells abutting against the single serial-parallel nickel sheet 4 end to form a series connection.
Specifically, a plurality of single serial-parallel press blocks 3 are arranged to press a plurality of battery cells 2, and the adjacent two battery cell parallel units abutted against the single serial-parallel nickel plates 4 are connected end to form a series connection through an anode contact end 402 and a cathode contact end 401 arranged on the single serial-parallel nickel plates 4, so that the plurality of battery cells 2 are assembled into a serial-parallel battery cell group without welding; for example, 200 cells are required to be connected in series and parallel in total, wherein the number of the cells to be connected in parallel is 10, 10 cells form a cell parallel unit, and 20 cell parallel units are required to be connected in series; as shown in fig. 1, the 10 electric cores of the first vertical row are all negative electrodes and the negative electrode contact end 401 of the single serial-parallel nickel sheet 4 are abutted, so that the 10 electric cores of the first vertical row are connected in parallel, namely, the 10 electric cores of the first vertical row form a previous electric core parallel unit 201, the 10 electric cores of the second vertical row are all positive electrodes and the positive electrode contact end 402 of the single serial-parallel nickel sheet 4 are abutted, so that the 10 electric cores of the second vertical row are connected in parallel, namely, the 10 electric cores of the second vertical row form a next electric core parallel unit 202, and the single serial-parallel nickel sheet 4 can realize the serial connection of the previous electric core parallel unit 201 and the next electric core parallel unit 202 by connecting the negative electrode of the previous electric core parallel unit 201 with the positive electrode of the next electric core parallel unit 202; in addition, as shown in fig. 3, the third vertical-row parallel cell is connected in series with the second vertical-row parallel cell through the single serial-parallel nickel sheet 4 at the other side, and so on, the whole cell 2 is connected in series in an S-type parallel manner, and it is worth noting that when the single serial-parallel press block 3 is installed, the single serial-parallel press blocks 3 at two sides of the middle frame plate 1 need to be installed in a staggered manner, so that the short circuit risk caused by alignment installation is avoided.
The using method comprises the following steps: when the battery cell testing module is used, only the single serial-parallel press block 3 on one side of the middle frame plate 1 is required to be disassembled, and then the battery cell 2 is placed in the middle frame plate 1, wherein the battery cell anode 5 is required to be abutted with the anode contact end 402 arranged on the single serial-parallel nickel plate 4, the battery cell cathode 6 is required to be abutted with the cathode contact end 401 arranged on the single serial-parallel nickel plate 4, the single serial-parallel press block 3 arranged on one side is staggered with the single serial-parallel press block 3 arranged on the other side, so that the battery cell testing module can be assembled by the battery cell 2, the middle frame plate 1, the single serial-parallel press block 3, the single serial-parallel nickel plate 4, a lead wire and the like conveniently, the testing efficiency is improved, the quick assembly and disassembly of the battery cell 2 are convenient, the battery cell testing module can be repeatedly used, and the testing cost is reduced.
It is worth noting that the single serial-parallel nickel sheet 4 is fixedly connected with a single serial-parallel lead 7; the battery pack also comprises a protection plate 8, and each single-string parallel lead 7 is sequentially connected with a voltage acquisition line of the protection plate 8, so that each single-string parallel lead 7 is converged on the protection plate 8 to lead out a total test line for connection with the charge-discharge cycle test device.
Specifically, the single serial-parallel nickel sheet 4 is fixedly connected with a single serial-parallel lead 7, so that the single serial-parallel nickel sheet 4 is conveniently connected with the outside, and because each single serial-parallel lead is sequentially connected with the voltage acquisition lines of the protection plate, the single serial-parallel lead corresponds to the voltage acquisition lines one by one, when the voltage measured by using the charge-discharge cycle test device after charge-discharge does not meet the standard, the voltage of a single cell parallel unit can be measured by adopting a universal meter to measure two adjacent acquisition lines on the protection plate 8, the measured value does not meet the specified cell parallel unit, and then the cell which is a defective product is measured and screened out from the cell parallel unit.
Further, the surfaces of the single serial-parallel pressing blocks 3 are fixedly provided with pressing pieces for pressing the battery cells 2.
The compressing piece is a spring 9 and a spring groove 10 for installing the spring 9, one end of the spring 9 is fixedly connected with the surface of the single serial-parallel pressing block 3, and the other end of the spring 9 is fixedly connected with the single serial-parallel nickel sheet 4.
Referring to fig. 3 to 6, the single serial-parallel press block 3 is provided with a positioning column 11, and the single serial-parallel press block 3 is further provided with a positioning hole 12 for matching with the positioning column 11; the middle frame plate 1 is provided with a through hole 13 for the positioning column 11 to penetrate through and a mounting hole 14 for the power supply core 2 to penetrate through; the device further comprises an upper pressing plate 15 and a lower pressing plate 16 which play a role in protecting the jig, clamping columns 17 are arranged on the upper pressing plate 15 and the lower pressing plate 16, and clamping holes 18 matched with the clamping columns 17 are formed in the middle frame plate 1.
The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (8)
1. A multi-serial-parallel cell testing jig is characterized in that:
the battery cell structure comprises a middle frame plate (1) used for fixing the middle part of each battery cell (2), wherein a plurality of single-string parallel pressing blocks (3) are detachably connected to two sides of the middle frame plate (1), the single-string parallel pressing blocks (3) are fixedly connected with single-string parallel nickel sheets (4) connected with each battery cell (2), and each battery cell (2) is electrically connected with the single-string parallel pressing blocks (3) through the single-string parallel nickel sheets (4);
the single serial-parallel nickel sheet (4) is provided with a plurality of positive electrode contact ends (402) and a plurality of negative electrode contact ends (401);
the positive electrode contact end (402) is used for abutting against a part of the battery cell positive electrode (5) so as to realize parallel connection of part of battery cells; the negative electrode contact end (401) is used for abutting against a part of the negative electrode (6) of the battery cell so as to realize parallel connection of the part of the battery cell; the partial battery cells which are in butt joint with the positive electrode contact end (402) and the partial battery cells which are in butt joint with the negative electrode contact end (401) respectively form a battery cell parallel unit;
each single serial-parallel nickel sheet (4) connects adjacent two parallel cells which are abutted with the single serial-parallel nickel sheet (4) end to form a series connection.
2. The multi-serial-parallel cell testing jig according to claim 1, wherein the single-serial-parallel nickel sheet (4) is fixedly connected with a single-serial-parallel lead (7).
3. The multi-serial-parallel battery cell testing jig according to claim 2, further comprising a protection board (8), wherein each single serial-parallel lead (7) is sequentially connected with a voltage acquisition line of the protection board (8), so that each single serial-parallel lead (7) is converged on the protection board (8) to lead out a total test line for connection with a charge-discharge cycle testing device.
4. The multi-serial-parallel cell testing jig according to claim 1, wherein the surfaces of the single-serial-parallel press blocks (3) are fixedly provided with pressing pieces for pressing the cells (2).
5. The multi-serial-parallel cell testing jig according to claim 4, wherein the pressing piece is a spring (9) and a spring groove (10) for installing the spring (9), one end of the spring (9) is fixedly connected with the surface of the single serial-parallel pressing block (3), and the other end of the spring is fixedly connected with the single serial-parallel nickel sheet (4).
6. The multi-serial-parallel cell testing jig according to claim 1, wherein the single-serial-parallel press block (3) is provided with a positioning column (11), and the single-serial-parallel press block (3) is further provided with a positioning hole (12) matched with the positioning column (11).
7. The multi-serial-parallel cell testing jig according to claim 6, wherein the middle frame plate (1) is provided with a through hole (13) for the positioning column (11) to penetrate through and a mounting hole (14) for the power supply core (2) to penetrate through.
8. The multi-serial-parallel cell testing jig according to claim 1, further comprising an upper pressing plate (15) and a lower pressing plate (16) which play a role of protecting the jig, wherein clamping columns (17) are arranged on the upper pressing plate (15) and the lower pressing plate (16), and clamping holes (18) matched with the clamping columns (17) are formed in the middle frame plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223474449.0U CN219608976U (en) | 2022-12-26 | 2022-12-26 | Multi-serial-parallel battery cell testing jig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223474449.0U CN219608976U (en) | 2022-12-26 | 2022-12-26 | Multi-serial-parallel battery cell testing jig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219608976U true CN219608976U (en) | 2023-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223474449.0U Active CN219608976U (en) | 2022-12-26 | 2022-12-26 | Multi-serial-parallel battery cell testing jig |
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| Country | Link |
|---|---|
| CN (1) | CN219608976U (en) |
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- 2022-12-26 CN CN202223474449.0U patent/CN219608976U/en active Active
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