CN221261205U - Testing device for thickness and cycle life of battery cell under different constraint forces - Google Patents
Testing device for thickness and cycle life of battery cell under different constraint forces Download PDFInfo
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- CN221261205U CN221261205U CN202323233624.1U CN202323233624U CN221261205U CN 221261205 U CN221261205 U CN 221261205U CN 202323233624 U CN202323233624 U CN 202323233624U CN 221261205 U CN221261205 U CN 221261205U
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- 238000012360 testing method Methods 0.000 title claims abstract description 48
- 239000003638 chemical reducing agent Substances 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000000452 restraining effect Effects 0.000 claims 7
- 238000013461 design Methods 0.000 abstract description 3
- 125000004122 cyclic group Chemical group 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000022131 cell cycle Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
The utility model discloses a device for testing the thickness and the cycle life of a battery cell under different constraint forces, and relates to the technical field of new energy batteries, comprising a bottom plate, a battery cell clamping device and a battery cell testing device; the battery cell clamping device comprises a battery cell left clamping plate, a battery cell right clamping plate, a V-shaped positioning groove, a telescopic screw rod and a clamping motor; the cell testing device comprises a control cabinet, a pressure transmitter, a temperature transmitter and a laser range finder; the testing device provided by the utility model can detect the thicknesses and the cycle lives of the battery cores with various specifications under different constraint forces, so that corresponding reference basis can be provided for the design of new energy batteries; and the use of V type constant head tank can carry out quick clamping with the electric core to need not to relocating, simple and convenient, swift, high efficiency.
Description
Technical Field
The utility model relates to the technical field of new energy batteries, in particular to a testing device for the thickness and the cycle life of an electric core under different constraint forces.
Background
Lithium batteries have been widely used in new energy fields due to their high energy density, long life and other advantages. The long-term cycle test research of the lithium ion battery shows that whether the cycle life of the battery is reasonably and closely related to the constraint force of the battery during the cycle is not, the proper constraint force required by the battery cell cycle can be different due to the difference of the external dimensions and the material of the lithium ion battery, and the conventional test method can not test the thickness of the battery cell and the cycle life of the battery cell under different constraint forces.
The application number is: 2021216759898, the thickness measurement of the battery core after the battery core is constrained can be carried out by the test device provided by the application, the test is not carried out on other aspects of the test, and the test device is time-consuming and labor-consuming when the battery core is clamped and positioned, and is difficult to carry out rapid clamping.
Disclosure of utility model
The utility model aims to provide a testing device for the thickness and the cycle life of a battery cell under different constraint forces, so as to solve the problems that the existing testing device provided in the prior art can only measure the thickness of the battery cell after constraint, and is time-consuming and labor-consuming and difficult to clamp rapidly during clamping and positioning of the battery cell.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the device comprises a bottom plate which is horizontally arranged, wherein a battery cell testing device and a battery cell clamping device are arranged left and right on the top surface of the bottom plate; the battery cell clamping device comprises a vertical battery cell left clamping plate fixedly connected to the top surface of the bottom plate, a positioning rear side plate inclined towards the rear side and a positioning front side plate inclined towards the front side are arranged on the right side of the battery cell left clamping plate, the positioning rear side plate and the positioning front side plate are connected together through the bottom plate, a slidable battery cell right clamping plate is arranged above the positioning rear side plate, a horizontal telescopic screw is fixedly connected to the right side surface of the battery cell right clamping plate, the right end of the telescopic screw is connected with a clamping motor, and the clamping motor is fixedly arranged on the bottom plate through a motor seat; the battery cell testing device comprises a control cabinet fixedly arranged on a bottom plate, a display screen is arranged on the upper portion of a cabinet door hinged to the front side of the control cabinet in an embedded mode, a plurality of control switches are arranged on the lower portion of the cabinet door, a single chip microcomputer is arranged in the control cabinet, the single chip microcomputer is electrically connected with a pressure transmitter, a temperature transmitter and a laser range finder through signal cables, the pressure transmitter and the temperature transmitter are arranged on a left clamping plate of the battery cell, and the laser range finder is arranged on a right clamping plate of the battery cell.
Preferably, the positioning rear side plate is obliquely arranged at forty-five degrees to the rear side, the positioning front side plate is obliquely arranged at forty-five degrees to the front side, so that a ninety-degree V-shaped positioning groove is formed, and a slidable right cell clamping plate is arranged in the V-shaped positioning groove.
Preferably, groove slideways are transversely arranged on the inner side surfaces of the positioning rear side plate and the positioning front side plate, and guide sliding blocks matched with the groove slideways are respectively arranged on the side edges of the right clamping plate of the battery cell, which are in contact with the positioning rear side plate and the positioning front side plate.
Preferably, the pressure transmitter is a single flange pressure transmitter, the flange part of the pressure transmitter is embedded and arranged on the left clamping plate of the battery cell, and the detection surface of the pressure transmitter and the left side surface of the left clamping plate of the battery cell are in the same plane.
Preferably, the clamping motor is electrically connected with the single chip microcomputer and is linked with the pressure transmitter through the single chip microcomputer.
Preferably, the left clamping plate of the battery cell is made of high-heat-conductivity metal.
Further, the clamping motor and the telescopic screw are provided with a speed reducer.
Compared with the prior art, the utility model has the beneficial effects that:
The testing device provided by the utility model can detect the thicknesses and the cycle lives of the battery cores with various specifications under different constraint forces, so that corresponding reference basis can be provided for the design of new energy batteries; and the use of V type constant head tank can carry out quick clamping with the electric core to need not to relocating, simple and convenient, swift, high efficiency.
Drawings
Fig. 1 is a front view;
FIG. 2 is a schematic diagram of the structure of FIG. 1;
FIG. 3 is a top view;
FIG. 4 is a cross-sectional view of A-A of FIG. 3;
FIG. 5 is a schematic diagram of an add-on speed reducer;
In the figure: the battery cell testing device comprises a bottom plate-1, a battery cell clamping device-2, a battery cell left clamping plate-21, a positioning rear side plate-22, a positioning front side plate-23, a V-shaped positioning groove-24, a battery cell right clamping plate-25, a telescopic screw rod-26, a clamping motor-27, a groove slide way-28, a guide slide block-29, a battery cell testing device-3, a control cabinet-31, a display screen-32, a control switch-33, a pressure transmitter-34, a temperature transmitter-35, a laser range finder-36 and a speed reducer-4.
Detailed Description
In order to make the technical solution of the present utility model better understood by those skilled in the art, the technical solution of the present utility model in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1-5, fig. 1 is a front view; FIG. 2 is a schematic diagram of the structure of FIG. 1; FIG. 3 is a top view; FIG. 4 is a cross-sectional view of A-A of FIG. 3; fig. 5 is a schematic diagram of an additional speed reducer.
The utility model provides a device for testing the thickness and the cycle life of a battery cell under different constraint forces, which is used for testing the thickness and the cycle life of battery cells with different specifications under different constraint forces, so as to test the constraint force and the thickness of the battery cell with corresponding specifications when the longest cycle life is ensured, thereby assisting in designing corresponding battery cell shells; including the bottom plate 1 of level setting, be provided with the battery core clamping device 2 that is used for pressing from both sides tight use to the battery core that needs the test on the top surface of bottom plate 1 about, left battery core testing arrangement 3 that is used for carrying out cycle life test use to the battery core that presss from both sides tight.
The battery cell clamping device 2 comprises a vertical battery cell left clamping plate 21 fixedly connected to the top surface of the bottom plate 1, a positioning rear side plate 22 inclined by forty-five degrees towards the rear side and a positioning front side plate 23 inclined by forty-five degrees towards the front side are arranged on the right side of the battery cell left clamping plate 21, the positioning rear side plate 22 and the positioning front side plate 23 are connected together through a bottom plate, a ninety-degree V-shaped positioning groove 24 is formed, meanwhile, a slidable battery cell right clamping plate 25 is arranged in the V-shaped positioning groove 24, a horizontal telescopic screw rod 26 is fixedly connected to the right side surface of the battery cell right clamping plate 25, a clamping motor 27 is connected to the right end of the telescopic screw rod 26, and the clamping motor 27 is fixedly arranged on the bottom plate 1 through a motor seat.
The inner side surfaces of the positioning rear side plate 22 and the positioning front side plate 23 are transversely provided with groove slide ways 28, and the side edges of the right clamping plate 25 of the battery core, which are in contact with the positioning rear side plate 22 and the positioning front side plate 23, are respectively provided with guide sliding blocks 29 which are matched with the groove slide ways 28, so that the right clamping plate 25 of the battery core is always in a vertical state with the positioning rear side plate 22 and the positioning front side plate 23 when sliding, and therefore axial clamping is always carried out when clamping the battery core.
The clamping motor 27 is electrically connected with the cell testing device 3, and the operation of the clamping motor 27 can be automatically controlled by the cell testing device 3.
The battery cell testing device 3 comprises a control cabinet 31 fixedly arranged on the bottom plate 1, a display screen 32 is embedded in the upper part of a cabinet door hinged to the front side of the control cabinet 31, a plurality of control switches 33 are arranged on the lower part of the cabinet door, a singlechip is arranged in the control cabinet 31 and used as a core processor of the testing device, the singlechip is electrically connected with a pressure transmitter 34 and a temperature transmitter 35 through a signal cable, the pressure transmitter 34 is a single-flange pressure transmitter, the flange part of the pressure transmitter is embedded in the left battery cell clamping plate 21, the detection surface of the pressure transmitter 34 and the left side surface of the left battery cell clamping plate 21 are in the same plane, and the pressure transmitter can be in direct contact with a detected battery cell so as to conveniently carry out pressure detection on the compressed battery cell; the temperature transmitter 35 is connected with the left clamping plate 21 of the electric core, the left clamping plate 21 of the electric core is made of high heat conduction metal, and the working temperature of the electric core can be detected in real time through the left clamping plate 21 of the electric core.
And the pressure transmitter 34 is linked with the clamping motor 27 through a single chip microcomputer.
The laser range finder 36 is arranged on the right clamping plate 25 of the battery cell and is used for detecting the distance between the left clamping plate 21 of the battery cell and the right clamping plate 25 of the battery cell in real time, and the laser range finder 36 is electrically connected with the single chip microcomputer and transmits the measurement result to the single chip microcomputer in real time for data processing.
In addition, in order to ensure more accurate telescopic distance control of the telescopic screw 26 by the clamping motor 27, a speed reducer 4 is added to the clamping motor 27 and the telescopic screw 26.
When the battery cell detection device is used, a battery cell to be detected is directly placed in the V-shaped positioning groove 24, the battery cell is positioned and placed through the positioning rear side plate 22 and the positioning front side plate 23, the positioned battery cell is electrically connected with the battery cell testing device 3, then the battery cell testing device 3 is started to drive the clamping motor 27 to push the battery cell right clamping plate 25 to the left side to squeeze the battery cell, when the pressure transmitter 34 detects that the constraint pressure of the battery cell reaches a set value, the clamping motor 27 automatically stops, and at the moment, the battery cell testing device 3 performs thickness measurement on the clamped battery cell and performs cyclic charge and discharge test for testing the cycle life of the battery cell; after the test is finished, a new group of battery cells are replaced, the thickness measurement is carried out under the new pressure, the cyclic charge and discharge test is carried out, and the cyclic life of the battery cells is tested, so that the thickness and the cyclic life of the battery cells under different pressures can be detected.
In addition, the thickness and the charge and discharge efficiency of the same group of battery cells under different self-mounting pressures can be detected, and corresponding reference data are provided for the assembly production of new energy batteries.
The testing device provided by the utility model can detect the thicknesses and the cycle lives of the battery cores with various specifications under different constraint forces, so that corresponding reference basis can be provided for the design of new energy batteries; and the use of V type constant head tank can carry out quick clamping with the electric core to need not to relocating, simple and convenient, swift, high efficiency.
While embodiments of the utility model have been illustrated and described, it will be apparent that the embodiments described are merely some, but not all embodiments of the utility model. Based on the embodiments of the present utility model, it will be understood by those skilled in the art that all other embodiments which may be obtained from numerous changes, modifications, substitutions and alterations of these embodiments without departing from the spirit and principles of the present utility model are within the scope of the present utility model.
Claims (7)
1. The utility model provides a thickness and cycle life's of electric core under different restraining forces testing arrangement which characterized in that: the battery cell testing device comprises a horizontally arranged bottom plate (1), wherein a battery cell testing device (3) and a battery cell clamping device (2) are arranged left and right on the top surface of the bottom plate (1); the battery cell clamping device (2) comprises a vertical battery cell left clamping plate (21) fixedly connected to the top surface of the bottom plate (1), a positioning rear side plate (22) inclined towards the rear side and a positioning front side plate (23) inclined towards the front side are arranged on the right side of the battery cell left clamping plate (21), the bottom plates of the positioning rear side plate (22) and the positioning front side plate (23) are connected together, a slidable battery cell right clamping plate (25) is arranged above the positioning rear side plate, a horizontal telescopic screw rod (26) is fixedly connected to the right side surface of the battery cell right clamping plate (25), a clamping motor (27) is connected to the right end of the telescopic screw rod (26), and the clamping motor (27) is fixedly arranged on the bottom plate (1) through a motor seat; the battery cell testing device (3) comprises a control cabinet (31) fixedly arranged on a bottom plate (1), a display screen (32) is embedded in the upper portion of a cabinet door hinged to the front side of the control cabinet (31), a plurality of control switches (33) are arranged on the lower portion of the cabinet door, a single-chip microcomputer is arranged in the control cabinet (31), the single-chip microcomputer is electrically connected with a pressure transmitter (34), a temperature transmitter (35) and a laser range finder (36) through signal cables, the pressure transmitter (34) and the temperature transmitter (35) are both arranged on a left clamping plate (21) of the battery cell, and the laser range finder (36) is arranged on a right clamping plate (25) of the battery cell.
2. The device for testing the thickness and cycle life of a cell under different restraining forces of claim 1, wherein: the positioning rear side plate (22) is obliquely arranged at forty-five degrees to the rear side, the positioning front side plate (23) is obliquely arranged at forty-five degrees to the front side, so that a ninety-degree V-shaped positioning groove (24) is formed, and a slidable cell right clamping plate (25) is arranged in the V-shaped positioning groove (24).
3. The device for testing the thickness and cycle life of a cell under different restraining forces of claim 2, wherein: groove slide ways (28) are transversely arranged on the inner side surfaces of the positioning rear side plate (22) and the positioning front side plate (23), and guide sliding blocks (29) which are matched with the groove slide ways (28) are respectively arranged on the side edges of the right clamping plate (25) of the battery cell, which are in contact with the positioning rear side plate (22) and the positioning front side plate (23).
4. The device for testing the thickness and cycle life of a cell under different restraining forces of claim 3, wherein: the pressure transmitter (34) is a single-flange pressure transmitter, the flange part of the pressure transmitter is embedded and arranged on the left clamping plate (21) of the battery cell, and the detection surface of the pressure transmitter (34) and the left side surface of the left clamping plate (21) of the battery cell are in the same plane.
5. The device for testing the thickness and cycle life of a cell under different restraining forces of claim 4, wherein: the clamping motor (27) is electrically connected with the single chip microcomputer and is linked with the pressure transmitter (34) through the single chip microcomputer.
6. The device for testing the thickness and the cycle life of a battery cell according to any one of claims 1 to 5 under different restraining forces, wherein: the left clamping plate (21) of the battery cell is made of high-heat-conductivity metal.
7. The device for testing the thickness and cycle life of a cell under different restraining forces of claim 6, wherein: the clamping motor (27) and the telescopic screw (26) are provided with a speed reducer (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323233624.1U CN221261205U (en) | 2023-11-29 | 2023-11-29 | Testing device for thickness and cycle life of battery cell under different constraint forces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323233624.1U CN221261205U (en) | 2023-11-29 | 2023-11-29 | Testing device for thickness and cycle life of battery cell under different constraint forces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221261205U true CN221261205U (en) | 2024-07-02 |
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ID=91631569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323233624.1U Active CN221261205U (en) | 2023-11-29 | 2023-11-29 | Testing device for thickness and cycle life of battery cell under different constraint forces |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221261205U (en) |
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2023
- 2023-11-29 CN CN202323233624.1U patent/CN221261205U/en active Active
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