Battery cell test tool

Abstract

The utility model relates to the field of lithium battery devices, in particular to a battery cell testing tool which comprises a rack, a motor is fixed to the rack, a rotating disc is fixed to the output end of the motor, a plurality of fixing cylinders are evenly fixed to the rotating disc, lower probes are fixed in the fixing cylinders, supporting rings are further arranged in the fixing cylinders, and the supporting rings are arranged on the rotating disc. A plurality of supporting springs are fixed to the lower portion of the supporting ring, an air cylinder is further fixed to the portion, above the rotary disc, of the rack, a pressing plate is fixed to the tail end of a piston rod of the air cylinder, a positioning ring is arranged below the pressing plate, a plurality of positioning rods are fixed to the positioning ring, and the positioning rods penetrate through the pressing plate and are in sliding connection with the pressing plate. A positioning block is further fixed to the top of the positioning rod, a plurality of positioning springs are further fixed between the positioning ring and the pressing plate, a fixing block is further arranged below the pressing plate, and an upper probe is further fixed to the bottom of the fixing block. According to the device, the battery cell can be tested, and the testing efficiency of the battery cell is greatly improved.

Description

Technical Field

[0001] The present invention relates to the field of lithium battery devices, and in particular to a battery cell testing tool. Background Art

[0002] The main performance parameters of batteries include electromotive force, capacity, specific energy, and resistance. Using batteries as an energy source can provide stable voltage, stable current, long-term stable power supply, and current that is minimally affected by external factors. Furthermore, batteries have a simple structure, are easy to carry, and are simple to charge and discharge. They are unaffected by external climate and temperature, and offer stable and reliable performance. They play a significant role in all aspects of modern life. With the development of technology, soft-pack batteries are finding increasingly widespread applications, particularly in energy storage, new energy vehicles, electric two-wheeled vehicles, and backup power supplies.

[0003] During the processing of existing soft-pack batteries, the voltage and internal resistance of the soft-pack cells need to be tested. Generally, the voltage must be 3.5-3.7V and the resistance must be ≤50mΩ to meet factory requirements. During testing, corresponding test tooling is required to cooperate with the inspection to improve work efficiency. Patent application number: CN202322468205.X discloses a battery cell testing device, a bracket; and an electrical connection mechanism mounted on the bracket; the electrical connection mechanism includes a first connection component and a second connection component, the first connection component includes a first electrical connector, and the second connection component includes a second electrical connector; the first electrical connector and the second electrical connector are spaced apart in the height direction of the battery cell and can move relative to each other; the first electrical connector is used to contact the positive electrode of the battery cell, and the second electrical connector is used to contact the negative electrode of the battery cell. During the test, the first electrical connector and the second electrical connector are first moved upward by external force. At this time, the first elastic member and the second elastic member are compressed. Then the battery cell is placed in the area between the first fixing member and the second fixing member, so that the lower end of the battery cell is embedded in the first groove and the upper end is embedded in the second groove. After the first elastic member and the second elastic member are released, the battery cell is compressed. At this time, the first contact portion is in close contact with the positive pole of the battery cell, and the second contact portion is in close contact with the negative pole of the battery cell, thereby achieving rapid assembly. However, when testing with this type of test device, it is necessary to wait until the previous battery cell is tested and then remove the tested battery cell, and then place and fix the next battery cell before testing the battery cell again, resulting in low test efficiency.

[0004] The present invention is proposed in view of the deficiencies in the prior art. Summary of the Invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a battery cell testing tool.

[0006] The present invention can be achieved through the following technical solutions:

[0007] The present invention discloses a battery cell testing tool, comprising a frame, a motor fixed on the frame, a turntable fixed on the motor output end, a plurality of fixed cylinders evenly fixed on the turntable, a lower probe fixed in the fixed cylinder, a support ring is also provided in the fixed cylinder, a plurality of support springs are fixed below the support ring, a cylinder is also fixed on the frame above the turntable, a pressure plate is fixed at the end of the piston rod of the cylinder, a positioning ring is provided below the pressure plate, a plurality of positioning rods are fixed on the positioning ring, the positioning rods pass through the pressure plate and are slidably connected to the pressure plate, a positioning block is also fixed on the top of the positioning rod, a plurality of positioning springs are fixed between the positioning ring and the pressure plate, a fixed block is also provided below the pressure plate, an upper probe is fixed at the bottom of the fixed block, and a limiting spring is fixed between the fixed block and the pressure plate. Place the battery cell to be tested on the fixed cylinder, insert the bottom of the battery cell into the fixed cylinder, support the battery cell with the support ring, start the motor, drive the turntable to rotate a certain angle, the next empty fixed cylinder reaches the specified position, and place the battery cell in the next fixed cylinder, the motor continues to drive the turntable to rotate, the battery cell to be tested reaches the bottom of the cylinder, the cylinder starts, the piston rod on the cylinder extends, the pressure plate drops, the positioning ring drops with the pressure plate, and the positioning ring contacts the battery cell and pushes the battery cell down. After the bottom of the battery cell contacts the lower probe, the positioning ring stops moving, the pressure plate continues to drop, the upper probe continues to drop, and the upper probe contacts the upper end of the battery cell. The battery cell is tested by contacting the upper and lower probes at both ends of the battery cell respectively. After the test is completed, the cylinder is started, the piston rod on the cylinder is shortened, the upper probe is separated from the battery cell, and the motor drives the turntable to rotate a certain angle again. The next battery cell to be tested reaches under the upper probe again, and the upper probe contacts the battery cell again to test the battery cell. In the process of battery cell testing, the tested battery cell is removed and the tested battery cell is placed again. This device can test the battery cell, and when testing the battery cell, the tested battery cell is removed and the battery cell to be tested is placed, which greatly improves the testing efficiency of the battery cell.

[0008] Preferably, the support ring is further fixed with a plurality of support rods, the support rods passing through the turntable and being slidably connected to the turntable, and support blocks are further fixed to the bottoms of the support rods. The support ring is smoothly raised and lowered by the support rods passing through the turntable.

[0009] Preferably, a limit rod is fixed to the fixed block, and a limit tube is fixed to the pressure plate, wherein the limit rod and the limit tube are slidably connected. The slidable connection between the limit rod and the limit tube enables the upper probe to rise and fall smoothly, ensuring that the upper probe contacts the designated position on the battery cell.

[0010] Compared with the existing technology, the present invention has the following advantages:

[0011] The device can test the battery cells, and when testing the battery cells, the tested battery cells can be removed and the battery cells to be tested can be placed, which greatly improves the testing efficiency of the battery cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0013] Figure 1 It is a structural schematic diagram of the present invention;

[0014] Figure 2 A top view of the present invention;

[0015] Figure 3 for Figure 2 Cross-sectional view at AA in the middle;

[0016] Figure 4 for Figure 1 Enlarged view of point B in the middle;

[0017] Figure 5 for Figure 3 Enlarged view of point C in the middle;

[0018] In the figure: 1. Frame; 2. Motor; 3. Turntable; 4. Fixing cylinder; 5. Lower probe; 6. Support ring; 7. Support rod; 8. Support block; 9. Support spring; 10. Press plate; 11. Cylinder; 12. Positioning ring; 13. Positioning rod; 14. Positioning block; 15. Positioning spring; 16. Fixing block; 17. Upper probe; 18. Limit rod; 19. Limit tube; 20. Limit spring DETAILED DESCRIPTION

[0019] The embodiments of the present invention are described in detail below with reference to the accompanying drawings:

[0020] Example 1:

[0021] like Figures 1 to 5As shown, this embodiment discloses a battery cell testing tool, including a frame 1, a motor 2 is fixed on the frame 1, a turntable 3 is fixed to the output end of the motor 2, a plurality of fixed cylinders 4 are evenly fixed on the turntable 3, a lower probe 5 is fixed in the fixed cylinder 4, a support ring 6 is also provided in the fixed cylinder 4, and a plurality of support springs 9 are fixed below the support ring 6, a cylinder 11 is also fixed on the frame 1 above the turntable 3, a pressure plate 10 is fixed to the end of the piston rod of the cylinder 11, a positioning ring 12 is provided below the pressure plate 10, a plurality of positioning rods 13 are fixed on the positioning ring 12, the positioning rod 13 passes through the pressure plate 10 and is slidably connected to the pressure plate 10, a positioning block 14 is also fixed on the top of the positioning rod 13, a plurality of positioning springs 15 are fixed between the positioning ring 12 and the pressure plate 10, a fixing block 16 is also provided below the pressure plate 10, an upper probe 17 is also fixed to the bottom of the fixing block 16, and a limiting spring 20 is fixed between the fixing block 16 and the pressure plate 10. The battery cell to be tested is placed on the fixed cylinder 4, the bottom of the battery cell is inserted into the fixed cylinder 4, and the battery cell is supported by the support ring 6. The motor 2 is started, and the motor 2 drives the turntable 3 to rotate a certain angle. The next empty fixed cylinder 4 reaches the specified position, and the battery cell is placed in the next fixed cylinder 4. The motor 2 continues to drive the turntable 3 to rotate. The battery cell to be tested reaches the bottom of the cylinder 11, the cylinder 11 is started, the piston rod on the cylinder 11 extends, the pressure plate 10 descends, and the positioning ring 12 descends with the pressure plate 10. After the positioning ring 12 contacts the battery cell, it pushes the battery cell to descend. After the bottom of the battery cell contacts the lower probe 5, the positioning ring 12 stops moving, the pressure plate 10 continues to descend, and the upper probe 17 continues to descend. After 7 contacts with the upper end of the battery cell, the upper probe 17 and the lower probe 5 respectively contact the two ends of the battery cell to test the battery cell. After the test is completed, the cylinder 11 is started, the piston rod on the cylinder 11 is shortened, the upper probe 17 is separated from the battery cell, and the motor 2 drives the turntable 3 to rotate a certain angle again. The next battery cell to be tested reaches the bottom of the upper probe 17 again, and the upper probe 17 contacts the battery cell again to test the battery cell. In the process of battery cell testing, the tested battery cell is removed and the tested battery cell is placed again. The device can realize the testing of battery cells, and when testing battery cells, the tested battery cell is removed and the battery cell to be tested is placed, which greatly improves the testing efficiency of the battery cell.

[0022] Among them, a plurality of support rods 7 are fixed on the support ring 6, and the support rods 7 pass through the turntable 3 and are slidably connected to the turntable 3. A support block 8 is also fixed at the bottom of the support rods 7. The support ring 6 is smoothly raised and lowered by passing the turntable 3 through the support rods 7.

[0023] Example 2:

[0024] This embodiment discloses a battery cell testing fixture. Based on the structure and principles of Example 1, this embodiment further includes a limit rod 18 fixed to the fixed block 16, and a limit tube 19 fixed to the pressure plate 10. Limit rod 18 and limit tube 19 are slidably connected. The sliding connection between limit rod 18 and limit tube 19 allows for smooth ascent and descent of upper probe 17, ensuring contact between upper probe 17 and a designated location on the battery cell.

[0025] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, various changes, modifications, replacements and variations can be made to these embodiments without departing from the technical principles of the present invention. These changes, modifications, replacements and variations should also be regarded as the scope of protection of the present invention.

Claims

1. A battery cell testing tool, comprising a frame, characterized in that: The motor is fixed on the frame, and a turntable is fixed on the output end of the motor. A plurality of fixed cylinders are evenly fixed on the turntable, and a lower probe is fixed in the fixed cylinder. A support ring is also provided in the fixed cylinder, and a plurality of support springs are fixed under the support ring. A cylinder is also fixed on the frame above the turntable, and a pressure plate is fixed at the end of the piston rod of the cylinder, and a positioning ring is provided under the pressure plate. A plurality of positioning rods are fixed on the positioning ring, and the positioning rods pass through the pressure plate and are slidably connected to the pressure plate. A positioning block is also fixed on the top of the positioning rod, and a plurality of positioning springs are fixed between the positioning ring and the pressure plate. A fixed block is also provided under the pressure plate, and an upper probe is fixed at the bottom of the fixed block. A limiting spring is also fixed between the fixed block and the pressure plate.

2. The battery cell testing tool according to claim 1, characterized in that: A plurality of support rods are fixed on the support ring. The support rods pass through the turntable and are slidably connected to the turntable. Support blocks are fixed at the bottoms of the support rods.

3. The battery cell testing tool according to claim 1, characterized in that: A limiting rod is also fixed on the fixing block, a limiting tube is also fixed on the pressing plate, and the limiting rod is slidably connected to the limiting tube.

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