Automatic Test Equipment for Battery Storage Performance

Abstract

The present invention relates to an automatic test device for the storage performance of a battery, comprising a storage box and a temperature control box; a plurality of storage channels in the storage box and temperature control channels in the temperature control box are arranged opposite to each other; a motor screw module is installed in the storage channel, a clamping member is installed at the driving end of the motor screw module, the clamping member is in transmission connection with the motor screw module, the motor screw module can drive the clamping member to move, and drive the battery cell to move in the storage channel and the temperature control channel; a detection component for detecting various performance parameters of the battery cell at room temperature is arranged in the storage box. The above automatic test device for the storage performance of a battery uses a temperature control box to replace the harsh environment where the battery cell is located, uses the storage box to provide space for the storage and test of the battery cell, achieves the integration of storage and test, and moves the battery cell through the motor screw module. This test device does not require manual handling and counting, saves manpower, and has a high degree of automation.

Description

Technical Field

[0001] The invention relates to the field of lithium battery testing equipment, and in particular to a battery storage performance automatic testing equipment. Background Art

[0002] Lithium-ion battery is a high-energy, high-voltage, high-cycle secondary battery. Currently, lithium batteries are widely used in power, energy storage, 3C and other fields. In the battery R&D verification test phase, a large number of tests are required on the performance of the battery cells to verify the reliability of the battery products with a large amount of data. The purpose of the storage test in the electrical performance test is to test the battery life attenuation and performance changes at different temperatures. In the specific operation process, the initial voltage of the battery BOL (begin of life), DC internal resistance, AC internal resistance, discharge capacity and other parameters are recorded, and then the battery is stored at the test temperature. The battery is taken out every once in a while and cooled to room temperature. Then the above data is tested and recorded, and then stored in a high and low temperature box again, and the next time it is taken out is recorded.

[0003] Due to the large amount of data required and the large number of cells to be tested, a lot of manpower is often required in the test verification process. In addition, in long-term testing, most companies and testing institutions use paper or electronic spreadsheets to record test dates. When faced with large quantities of cells, it is easy to miss or confuse them, and there may also be certain risks during the transportation process. Summary of the invention

[0004] Based on this, it is necessary to provide an automatic battery storage performance testing device to address the problem that traditional lithium battery testing requires a lot of manpower.

[0005] A battery storage performance automatic testing device comprises a storage box and a temperature control box; the storage box has a plurality of storage channels and the temperature control channels in the temperature control box are arranged relatively to each other; a motor screw module is installed in the storage channel, a clamping piece is installed at the driving end of the motor screw module, the clamping piece is transmission-connected to the motor screw module, the motor screw module can drive the clamping piece to move, and drive the battery cell to move in the storage channel and the temperature control channel; a detection component for detecting various performance parameters of the battery cell at room temperature is arranged in the storage box.

[0006] Furthermore, a plurality of first baffles are arranged in the temperature control box in the transverse and longitudinal directions, and the plurality of baffles intersect to form a plurality of the temperature control channels; through holes are opened on the side walls of the temperature control channels, and adjacent temperature control channels are connected through the through holes.

[0007] Furthermore, a plurality of second baffles are arranged horizontally and vertically in the storage box, and the plurality of baffles cross each other to form a plurality of the storage channels; both sides of one end of the storage channel far from the temperature control channel are set as openings, and the plurality of storage channels at the same horizontal height are communicated through the openings.

[0008] Furthermore, horizontal guide grooves and vertical guide grooves are formed in the horizontally arranged second baffle; the horizontal guide grooves straddle the openings of the plurality of mutually communicated storage channels, and the plurality of vertical guide grooves are respectively located in each storage channel and communicated with the horizontal guide grooves.

[0009] Furthermore, the motor screw module includes a mounting frame and a moving frame; the plurality of mounting frames are respectively mounted below each second baffle, and a first motor and a first guide rail are mounted on each mounting frame, and the driving axes of both are parallel to the opening direction of the horizontal guide groove; one end of the moving frame is in transmission connection with the driving shaft of the first motor, the other end of the moving frame is movably mounted on the first guide rail, and a second motor and a second guide rail are mounted on the moving frame, and the driving axes of both are parallel to the opening direction of the vertical guide groove.

[0010] Furthermore, one end of the clamping member is in transmission connection with the driving shaft of the second motor, and the other end of the clamping member is movably mounted on the second guide rail.

[0011] Furthermore, the clamping end of the clamping member is detachably clamped on the battery cell.

[0012] Furthermore, a sealing member is arranged at the connection of the storage channel and the temperature control channel for closing the temperature control channel.

[0013] Furthermore, the detection component includes a voltage and internal resistance meter, a voltage wire harness and a temperature wire harness; the voltage and internal resistance meter is used to connect to the positive and negative electrodes of the battery cell to measure the voltage and AC internal resistance of the battery cell; the voltage wire harness and the temperature wire harness are used to perform real-time detection on the battery cell during the test.

[0014] Furthermore, a charge and discharge component is further included for charging and discharging the battery cell after detection.

[0015] The above-mentioned automatic battery storage performance testing equipment uses a temperature control box to replace the harsh environment where the battery cell is located, uses a storage box to provide space for the storage and testing of the battery cell, achieves the integration of storage and testing, and performs moving operations on the battery cell through the motor screw module. This testing equipment does not require manual handling and statistics, saves manpower, and has a high degree of automation. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the testing equipment for one embodiment;

[0017] Figure 2 It is a schematic structural diagram of the temperature control box;

[0018] Figure 3 Schematic structural diagram of the first perspective of the storage box;

[0019] Figure 4 Schematic structural diagram of the second perspective of the storage box;

[0020] Figure 5 Schematic structural diagram of the internal structure of the storage box;

[0021] Figure 6 Schematic structural diagram of the motor screw module.

[0022] In the figure: 100, temperature control box; 110, temperature control channel; 120, through hole; 200, storage box; 210, storage channel; 220, transverse guide groove; 230, longitudinal guide groove; 300, motor screw module; 310, mounting bracket; 320, moving bracket; 330, first motor; 340, first guide rail; 350, second motor; 360, second guide rail; 400, clamping part. Specific embodiments

[0023] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] As Figures 1 to 6 shown, in one embodiment, an automatic battery storage performance testing device includes a storage box 200 and a temperature control box 100; a plurality of storage channels 210 in the storage box 200 and temperature control channels 110 in the temperature control box 100 are arranged opposite to each other; a motor screw module 300 is installed in the storage channel 210, a clamping part 400 is installed at the driving end of the motor screw module 300, the clamping part 400 is in transmission connection with the motor screw module 300, the motor screw module 300 can drive the clamping part 400 to move, and drive the battery cell to move in the storage channel 210 and the temperature control channel 110; a detection component for detecting various performance parameters of the battery cell at room temperature is arranged in the storage box 200.

[0025] During use, according to the test cycle of the battery cell to be tested, the date for battery cell testing is preset. The battery cell is placed in the temperature control box 100 during the storage stage. After reaching the test date, the normally closed temperature control box 100 and the storage box 200 are connected. The motor screw module 300 is started, and the clamping part 400 is driven behind the battery cell. After contacting the battery cell, the motor screw module 300 runs in the reverse direction and moves the battery cell from the temperature control box 100 to the storage box 200. After being placed for a period of time (usually more than three hours) and reaching room temperature, the detection component arranged in the storage box 200 contacts the battery cell and detects various performance parameters of the battery cell. After the test is completed, the motor screw module 300 moves the battery cell back to its original position. The data obtained from the test is recorded in a computer (or storage unit).

[0026] For the above-mentioned automatic battery storage performance testing equipment, the temperature control box 100 is used to replace the harsh environment where the battery cell is located, and the storage box 200 provides space for the storage and testing of the battery cell, achieving the integration of storage and testing. The motor screw module 300 is used to move the battery cell. This testing equipment does not require manual handling and statistics, saving manpower and having a high degree of automation.

[0027] In this embodiment, a plurality of first baffles are arranged horizontally and vertically in the temperature control box 100, and the plurality of baffles intersect to form a plurality of temperature control channels 110; through holes 120 are formed in the side walls of the temperature control channels 110, and adjacent temperature control channels 110 are connected through the through holes 120. This is used to ensure uniform temperature.

[0028] In this embodiment, a plurality of second baffles are arranged horizontally and vertically in the storage box 200, and the plurality of baffles intersect to form a plurality of storage channels 210; both sides of one end of the storage channel 210 far from the temperature control channel 110 are set as openings, and the plurality of storage channels 210 at the same horizontal height are connected through these openings.

[0029] In this embodiment, a horizontal guide groove 220 and a vertical guide groove 230 are formed in the horizontally arranged second baffle; the horizontal guide groove 220 straddles the openings of the plurality of interconnected storage channels 210, and the plurality of vertical guide grooves 230 are respectively located in each storage channel 210 and are connected to the horizontal guide groove 220.

[0030] In this embodiment, the motor screw module 300 includes a mounting frame 310 and a movable frame 320; multiple mounting frames 310 are respectively installed under each second baffle, and each mounting frame 310 is installed with a first motor 330 and a first guide rail 340, and the driving axes of the two are parallel to the opening direction of the transverse guide groove 220; one end of the movable frame 320 is connected to the driving shaft of the first motor 330, and the other end of the movable frame 320 is movably installed on the first guide rail 340, and the movable frame 320 is installed with a second motor 350 and a second guide rail 360, and the driving axes of the two are parallel to the opening direction of the longitudinal guide groove 230.

[0031] In this embodiment, one end of the clamping member 400 is drivingly connected to the driving shaft of the second motor 350 , and the other end of the clamping member 400 is movably mounted on the second guide rail 360 .

[0032] When in use, the first motor 330 can drive the moving rack 320 to within the range of any storage channel 210 , and then the second motor 350 can drive the clamping member 400 to the depth of the storage channel 210 and the temperature control channel 110 .

[0033] In this embodiment, the clamping end of the clamping member 400 is detachably clamped on the battery cell. The clamping end of the clamping member 400 can adopt a traditional buckle connection method, and when in contact with the battery cell, it cooperates with a preset buckle on the battery cell, thereby driving the battery cell to move. In addition, other commonly used structures in traditional technologies, such as magnetic attraction, screw connection, etc., can also be adopted.

[0034] In this embodiment, a sealing member is provided at the connection between the storage channel 210 and the temperature control channel 110 to seal the temperature control channel 110. Specifically, the sealing member can be provided as a heat-insulating plate-like structure, which can be plugged into the connection between the two channels to seal the temperature control channel 110. In addition, the sealing member can also be provided as a rubber structure with heat insulation and elasticity, and the middle of the rubber structure has a space, through which the battery cell can shuttle between the two channels.

[0035] In this embodiment, the detection component includes a voltage resistance meter, a voltage wiring harness and a temperature wiring harness; the voltage resistance meter is used to connect to the positive and negative poles of the battery cell to measure the voltage and AC internal resistance of the battery cell; the voltage wiring harness and the temperature wiring harness are used to perform real-time detection of the battery cell during the test.

[0036] In this embodiment, the testing equipment further includes a charging and discharging assembly for charging and discharging the tested battery cells.

[0037] Among them, the voltage and internal resistance meter only measures the initial voltage and AC internal resistance. When in use, the voltage and internal resistance meter touches the positive and negative electrodes of the battery cell with two electric pens to measure the voltage and AC internal resistance. The wire harness for voltage measurement and the temperature wire harness are monitored in real time during the test. The voltage wire harness can be placed together with the high-power charging and discharging wire harness, and also touches the positive and negative electrodes. However, it is not measured simultaneously with the voltage and internal resistance meter. The temperature wire harness is at the welding point of the battery cell tab, where the temperature is usually the highest. The wire harness connection of the voltage and internal resistance meter can be integrated on one side of the test channel. Temperature, voltage, charging and discharging can be integrated on the other side of the channel. The left and right movement of the motor can make the battery cell come into contact with it.

[0038] The above-mentioned automatic battery storage performance testing equipment makes the storage test automated, eliminating the trouble of handling and statistics. The test results are timely and correct. Moreover, it facilitates the transformation of the ordinary temperature control box 100, has strong compatibility, and can be used for different types of battery cells. Only the battery cells need to be modularized.

[0039] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the appended claims.

Claims

1. An automatic test device for battery storage performance, characterized in that, It includes a storage box and a temperature control box; there are multiple storage channels in the storage box and temperature control channels in the temperature control box arranged opposite to each other; a motor screw module is installed in the storage channel, a clamping part is installed at the driving end of the motor screw module, the clamping part is in transmission connection with the motor screw module, the motor screw module can drive the clamping part to move, and drive the battery cell to move in the storage channel and the temperature control channel; a detection component for detecting various performance parameters of the battery cell at room temperature is arranged in the storage box; A sealing member is arranged at the connection of the storage channel and the temperature control channel, the sealing member is in the shape of a heat insulation plate, and is inserted at the connection of the two channels to seal the temperature control channel.

2. The automatic battery storage performance testing device according to claim 1, characterized in that, A plurality of first baffles are arranged horizontally and vertically in the temperature control box, and the plurality of baffles cross to form a plurality of the temperature control channels; through holes are formed in the side walls of the temperature control channels, and adjacent temperature control channels are communicated through the through holes.

3. The automatic battery storage performance testing device according to claim 2, wherein A plurality of second baffles are arranged horizontally and vertically in the storage box, and the plurality of baffles cross to form a plurality of the storage channels; both sides of the storage channel far away from the temperature control channel are set as openings, and the plurality of storage channels at the same horizontal height are communicated through the openings.

4. The automatic battery storage performance testing device according to claim 3, characterized in that Horizontal guide grooves and vertical guide grooves are formed in the horizontally arranged second baffle; the horizontal guide grooves span the openings of the mutually communicated plurality of storage channels, and the plurality of vertical guide grooves are respectively located in each storage channel and are communicated with the horizontal guide grooves.

5. The automatic battery storage performance testing device according to claim 4, characterized in that, The motor screw module includes a mounting frame and a moving frame; a plurality of the mounting frames are respectively installed below each second baffle, a first motor and a first guide rail are installed on each mounting frame, and the driving axes of both are parallel to the opening direction of the horizontal guide groove; one end of the moving frame is in transmission connection with the driving shaft of the first motor, the other end of the moving frame is movably installed on the first guide rail, a second motor and a second guide rail are installed on the moving frame, and the driving axes of both are parallel to the opening direction of the vertical guide groove.

6. The automatic battery storage performance testing device according to claim 5, characterized in that One end of the clamping part is in transmission connection with the driving shaft of the second motor, and the other end of the clamping part is movably installed on the second guide rail.

7. The automatic battery storage performance testing device according to claim 6, characterized in that, The clamping end of the clamping part is detachably clamped on the battery cell.

8. The automatic battery storage performance testing device according to claim 1, characterized in that, A sealing member is arranged at the connection of the storage channel and the temperature control channel to seal the temperature control channel.

9. The automatic battery storage performance testing device according to claim 1, characterized in that The detection component includes a voltage and internal resistance meter, a voltage wire harness and a temperature wire harness; the voltage and internal resistance meter is used to connect to the positive and negative electrodes of the battery cell to measure the voltage and AC internal resistance of the battery cell; the voltage wire harness and the temperature wire harness are used to perform real-time detection on the battery cell during the test.

10. The automatic battery storage performance testing device according to claim 9, characterized in that, It further includes a charge and discharge component for charging and discharging the battery cell after detection.

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