Lithium battery pack durability test device and test method

Abstract

The invention provides a lithium battery pack durability testing device and a lithium battery pack durability testing method, and belongs to the technical field of lithium battery durability testing. The upper end of the test board is fixedly connected with the discharge tester which can be used for controlling the discharge test probes to detect the lithium battery pack, the side end of the discharge tester is fixedly connected with the two discharge test probes which can be used for installing the lithium battery pack so that the lithium battery pack can be subjected to discharge detection, and the upper end of the test board is fixedly connected with the installation column. Two second sliding grooves are formed in the upper end of the testing table, so that the sliding frame can slide on the testing table, an operator can observe the tested lithium battery packs through monitoring equipment, and after discharging detection is conducted on the lithium battery packs in batches, a moving mechanism drives the lithium battery packs to move to a collecting groove; and puncture and extrusion detection is performed on the lithium battery pack through the mobile testing mechanism, so that the effect of more convenience in batch operation is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of lithium battery durability testing, and in particular relates to a lithium battery pack durability testing device and a testing method. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive / negative electrode materials and uses non-aqueous electrolyte solutions. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain metallic lithium and are rechargeable.

[0003] After searching, it was found that a battery pack durability tester was disclosed in a Chinese patent with authorization announcement number CN115712068A, including a damper, a motor, a torque sensor, a distance conversion mechanism, a distance sensor and a controller; the motor is electrically connected to the battery pack to work under the power supply of the battery pack; the input shaft of the torque sensor is connected to the motor through a transmission mechanism, and the output shaft is connected to the damper, and the transmission mechanism is used to simulate the firing transmission mechanism of the electric laparoscope stapler; the distance conversion mechanism is connected to the transmission mechanism, and is used to convert the firing distance; the distance sensor is used to generate a commutation signal when the firing distance reaches a preset value; the controller is respectively connected to the distance sensor, the motor and the torque sensor, and is used to control the motor to change the direction when receiving the commutation signal. The present invention tests the battery pack in a manner of simulating the actual motion state of the electric laparoscope, and can easily obtain the actual service life or number of uses of the battery pack under various usage conditions.

[0004] However, the above technical solution can easily determine the actual service life or number of uses of the battery pack under various usage conditions. However, the lithium battery testing equipment in the prior art usually measures the temperature and discharge times, but tests the strength of the lithium battery pack. Existing workers manually remove the lithium battery pack and then test it through puncture and extrusion equipment, which is inconvenient during batch operations. Summary of the invention

[0005] The purpose of the present invention is to provide a lithium battery pack durability testing device and testing method, aiming to solve the problem that the lithium battery testing equipment in the prior art usually measures the temperature and the number of discharges, but when testing the strength of the lithium battery pack, the existing workers manually remove the lithium battery pack and then test it through puncture and extrusion equipment, which is inconvenient during batch operations.

[0006] To achieve the above object, the present invention provides the following technical solutions: A lithium battery pack durability testing device and testing method, comprising: A test bench, wherein a discharge tester is fixedly connected to the upper end of the test bench, two discharge test probes are fixedly connected to the side ends of the discharge tester, a mounting column is fixedly connected to the upper end of the test bench, two second slide grooves are provided at the upper end of the test bench, and sliding racks are slidably connected in the two second slide grooves; The moving mechanism comprises: a second motor, a slider, a sliding rod, a spring, a first sliding rod, a third sliding groove, a third sliding rod, two clamping bars and a fixed rod, the second motor is fixedly connected to the mounting column, the slider is fixedly connected to the output end of the second motor, the sliding rod is slidably connected to the slider, the spring is slidably connected to the circumferential surface of the sliding rod, the first sliding rod is rotatably connected to one end of the sliding rod, the third sliding groove is opened at the upper end of the test bench, the third sliding rod is slidably connected to the third sliding groove, the two clamping bars are rotatably connected to each other through the third sliding rod, the fixed rod is fixedly connected to the lower side end of one of the clamping bars, the side end of one of the clamping bars and the side end of the discharge tester are fixedly connected with an electromagnetic suction block, and the two electromagnetic suction blocks are adsorbed and connected to each other; A mobile testing mechanism, the mobile testing mechanism comprises: a first motor, a gear, a rack, two fixed frames, two cylinders, two sliding frames, a plurality of extrusion blocks and a plurality of puncture needles, the first motor is fixedly connected to a circular groove of the test bench, the gear is fixedly connected to the output end of the first motor, the rack is fixedly connected to the side end of the sliding frame, the two fixed frames are respectively fixedly connected to the two side ends of the sliding frame, the two cylinders are respectively fixedly connected to the two fixed frames, the two sliding frames are respectively fixedly connected to the telescopic ends of the two cylinders, the plurality of extrusion blocks are fixedly connected to one end of one of the sliding frames, and the plurality of puncture needles are fixedly connected to one end of the other sliding frame.

[0007] As a preferred solution of the present invention, a first slide groove is opened at the upper end of the test bench, the lower end of the first slide rod is slidably connected to the first slide groove, and a protective shell is fixedly connected to the upper end of the test bench.

[0008] As a preferred solution of the present invention, two mounting tubes are fixedly connected to the upper end of the sliding frame, and air pipes are slidably connected inside the two mounting tubes.

[0009] As a preferred solution of the present invention, a plurality of through holes are provided at the upper end of the test bench, and a collecting trough is provided at the upper end of the test bench.

[0010] As a preferred solution of the present invention, one end of one of the clamping bars is fixedly connected to a docking head, and one end of the other clamping bar is fixedly connected to an electric suction head, and the electric suction head is slidably connected in the docking head.

[0011] As a preferred solution of the present invention, the lower ends of the two fixed frames are each provided with a fourth sliding groove, the upper ends of the two sliding frames are each fixedly connected with a second sliding rod, and the two second sliding rods are respectively slidably connected in the two fourth sliding grooves.

[0012] As a preferred solution of the present invention, a monitoring device is fixedly connected to the upper inner wall of the sliding frame, and a protective cover is provided on the surface of the monitoring device.

[0013] As a preferred solution of the present invention, a rubber layer is provided at the lower end of the test bench, and the spring is slidably connected in the circular groove of the slider.

[0014] As a preferred solution of the present invention, the surfaces of the two clamping bars are both provided with a rubber layer, and the two sliding frames are respectively slidably connected to the two side ends of the sliding frame.

[0015] As a preferred embodiment of the present invention, A lithium battery pack durability testing method, comprising: S1. First, multiple lithium battery packs are placed between two discharge test probes, and the multiple lithium battery packs are subjected to discharge tests by running the discharge tester. Then, the slider is driven to rotate by running the second motor, so that the slide bar pushes one of the clamping bars to dock with the other clamping bar, so that the two clamping bars clamp the lithium battery packs. Then, the electric suction head is powered so that the electric suction head and the docking head are connected to each other under the electromagnetic suction force, and the lithium battery packs are installed in the two clamping bars. S2. The second motor is operated to drive the lithium battery pack to move to the upper end of the collecting tank, and the first motor is operated to drive the gear to rotate, so that the rack slides on the test bench, and the sliding frame moves to the upper end of the two clamping bars. The two cylinders are operated to drive multiple puncture needles and multiple extrusion blocks to puncture and extrude the lithium battery pack. The operator can observe the lithium battery pack after the test through the monitoring equipment; S3. After testing the lithium battery pack, one end of the air pipe can be connected to the air source, and the nozzle at the other end can be used to clean the lithium battery pack debris in the collection tank. The docking head and electric suction head installed on the two clamping bars can enable the two clamping bars to fix multiple lithium battery packs. The first slide groove set on the test bench can support multiple lithium battery packs to slide stably on the test bench.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. Place multiple lithium battery packs between two discharge test probes, perform discharge tests on multiple lithium battery packs by running the discharge tester, and then drive the slider to rotate by running the second motor, so that the sliding rod pushes one of the clamping bars to dock with the other clamping bar, so that the two clamping bars clamp the lithium battery pack, and then power the electric suction head so that the electric suction head and the docking head are connected to each other under electromagnetic suction, and the lithium battery pack is installed in the two clamping bars. The lithium battery pack can be driven to move to the upper end of the collection tank by running the second motor, and then the gear is driven to rotate by running the first motor, so that the rack slides on the test bench, and the sliding frame moves to the upper end of the two clamping bars. The lithium battery pack is punctured and squeezed by running two cylinders. The operator can observe the tested lithium battery pack through the monitoring equipment. After the lithium battery pack is discharged in batches, the mobile mechanism drives the lithium battery pack to move to the collection tank, and the lithium battery pack is punctured and squeezed by the mobile test mechanism, so that the batch operation is more convenient.

[0017] 2. Connect one end of the air pipe to the air source, and the operator can take the nozzle at the other end to clean the lithium battery pack debris in the collection tank, which can increase the cleanliness of the test bench. The docking joints and electric suction heads installed on the two clamping bars can enable the two clamping bars to fix multiple lithium battery packs so that the mobile testing organization can perform puncture and extrusion tests on the lithium battery packs. The first slide groove set on the test bench can support multiple lithium battery packs to slide stably on the test bench, thereby increasing the stability of the clamping bar.

[0018] 3. The through holes set on the test bench can be used to fix the test bench on the workbench by bolts, thereby increasing the firmness of the test bench. The protective shell installed on the test bench can be used to separate the gears to avoid injuries to the operator when the equipment is running. The circular groove set on the surface of the slider can push the spring to compress. The collecting groove set on the test bench is so that the staff can collect the lithium battery pack debris in the collecting groove. The test bench is opened, which can make the sliding frame slide stably on the test bench. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 This is a first-view stereogram of the present invention; Figure 2 It is an exploded view of the present invention; Figure 3 It is a structural schematic diagram of the moving mechanism in the present invention; Figure 4 It is an exploded view of the moving mechanism in the present invention; Figure 5 is an enlarged view of the test bench in the present invention; Figure 6 is an enlarged view of the sliding frame of the present invention; Figure 7 It is a stereoscopic diagram from a second viewing angle of the present invention; Figure 8 This is a stereoscopic diagram from a third viewing angle of the present invention.

[0020] In the figure: 1. test bench; 201. discharge tester; 202. mounting column; 203. sliding frame; 204. discharge test probe; 205. first motor; 206. gear; 207. rack; 208. extrusion block; 209. puncture needle; 211. fixed frame; 212. slider; 213. cylinder; 214. second motor; 215. slide rod; 216. spring; 217. first slide rod; 218. fixed rod; 219. clamping bar; 220. slide frame; 3. protective shell; 4. air pipe; 5. mounting pipe; 6. collecting tank; 7. through hole; 8. first slide slot; 9. second slide slot; 10. third slide slot; 11. second slide rod; 12. docking joint; 13. electric suction head; 14. third slide rod; 16. monitoring equipment; 17. fourth slide slot; 18. electromagnetic suction block. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1 See also Figure 1-Figure 8 , the present invention provides the following technical solutions: A lithium battery pack durability testing device and testing method, comprising: Test bench 1, the upper end of the test bench 1 is fixedly connected with a discharge tester 201, which can be used to control the discharge test probe 204 to detect the lithium battery pack. The side end of the discharge tester 201 is fixedly connected with two discharge test probes 204, which can be used to install the lithium battery pack so that the lithium battery pack can be discharged. The upper end of the test bench 1 is fixedly connected with a mounting column 202, which can be used to install the second motor 214. Two second slide grooves 9 are provided at the upper end of the test bench 1, allowing the sliding frame 203 to slide on the test bench 1. The sliding frame 203 is slidably connected in the two second slide grooves 9, which can be used to install a mobile testing mechanism; The moving mechanism includes: a second motor 214, a slider 212, a sliding rod 215, a spring 216, a first sliding rod 217, a third sliding groove 10, a third sliding rod 14, two clamping bars 219 and a fixed rod 218. The second motor 214 is fixedly connected to the mounting column 202 and can drive the clamping bar 219 to rotate. The slider 212 is fixedly connected to the output end of the second motor 214, so that the sliding rod 215 can slide in the second motor 214. The sliding rod 215 is slidably connected to the slider 212 and can push the clamping bar 219 to swing. The spring 216 is slidably connected to the circumferential surface of the sliding rod 215 and can push one of the clamping bars 219 to fit with the other clamping bar 219. The first sliding rod 217 is rotatably connected to one end of the sliding rod 215 and can support the stable sliding of the lithium battery pack. The third sliding groove 10 is opened at the upper end of the test bench 1, so that the two clamping bars 219 can slide on the test bench 1. The third slide bar 14 is slidably connected in the third slide groove 10, so that the two clamping bars 219 can be rotatably connected to each other. The two clamping bars 219 are rotatably connected to each other through the third slide bar 14, and the two clamping bars 219 can fix multiple lithium battery packs. The fixing rod 218 is fixedly connected to the lower side end of one of the clamping bars 219. The first slide bar 217 can drive the lithium battery pack to slide through the fixing rod 218. The extrusion block 208 and the puncture needle 209 can avoid the fixing rod 218, and then pass through the square hole of the clamping bar 219 to test the lithium battery pack. The side end of one of the clamping bars 219 and the side end of the discharge tester 201 are fixedly connected with an electromagnetic suction block 18, and the two electromagnetic suction blocks 18 are adsorbed and connected to each other. After the puncture and extrusion test, the clamping bar 219 is attached to the surface of the discharge tester 201, and then adsorbed and connected by two electromagnetic suction blocks 18, so that the clamping bar 219 can be reset; The mobile testing mechanism includes: a first motor 205, a gear 206, a rack 207, two fixed frames 211, two cylinders 213, two slide frames 220, a plurality of extrusion blocks 208 and a plurality of puncture needles 209. The first motor 205 is fixedly connected to the circular groove of the test bench 1 and can drive the gear 206 to rotate. The gear 206 is fixedly connected to the output end of the first motor 205 and can drive the rack 207 to move. The rack 207 is fixedly connected to the side end of the slide frame 203 and can drive the slide frame 203 to move through the gear 206. The two fixed frames 211 are respectively fixedly connected to the two side ends of the slide frame 203 and can fix the cylinder 213 on the slide frame 203. The two cylinders 213 are respectively fixedly connected to the two fixed frames 211 and can drive the slide frame 220 to move. The two slide frames 220 are respectively fixedly connected to the telescopic ends of the two cylinders 213 and can be used to install the puncture needles 209 and the extrusion blocks 208. A plurality of extrusion blocks 208 are fixedly connected to one end of one of the slide frames 220 to perform an extrusion test on the lithium battery pack. A plurality of puncture needles 209 are fixedly connected to one end of another slide frame 220 to perform a puncture test on the lithium battery pack.

[0023] like Figure 1 , Figure 2 and Figure 3 As shown, the upper end of the test bench 1 is provided with a first slide groove 8, which allows the first slide bar 217 to slide stably on the test bench 1. The lower end of the first slide bar 217 is slidably connected to the first slide groove 8, which can increase the stability of the two clamping bars 219. The upper end of the test bench 1 is fixedly connected with a protective shell 3, which can be used to separate the gears 206.

[0024] like Figure 1 As shown, two mounting tubes 5 are fixedly connected to the upper end of the sliding frame 203, and the air pipe 4 can be installed on the sliding frame 203. The air pipe 4 is slidably connected in the two mounting tubes 5, one end of which is connected to the air source, and the other end can clean the lithium battery pack debris in the collection tank 6.

[0025] like Figure 1 As shown, the upper end of the test bench 1 is provided with a plurality of through holes 7, so that the test bench 1 can be fixedly mounted on a workbench. The upper end of the test bench 1 is provided with a collecting trough 6, which can be used to collect lithium battery pack debris.

[0026] like Figure 3 and Figure 4As shown, one end of one of the clamping bars 219 is fixedly connected to the docking head 12, and the two clamping bars 219 can be fixedly connected by cooperating with the electric suction head 13. One end of the other clamping bar 219 is fixedly connected to the electric suction head 13, and the electric suction head 13 is energized so that the electric suction head 13 and the docking head 12 are adsorbed and connected to each other. The electric suction head 13 is slidably connected to the docking head 12, and the electric suction head 13 and the docking head 12 are connected to each other, so that the two clamping bars 219 can fix the lithium battery pack.

[0027] like Figure 2 and Figure 6 As shown, the lower ends of the two fixed frames 211 are provided with fourth slide grooves 17, which enable the second slide bar 11 to slide stably on the fixed frames 211. The upper ends of the two slide frames 220 are fixedly connected with the second slide bars 11, which can increase the stability of the slide frames 220 by sliding in the slide frame 203. The two second slide bars 11 are slidably connected in the two fourth slide grooves 17, respectively, so that the slide frame 220 can move in the fixed frame 211.

[0028] like Figure 6 As shown, the upper inner wall of the sliding frame 203 is fixedly connected with a monitoring device 16, which can be used to observe the lithium battery pack under test, thereby increasing the safety of workers. A protective cover is provided on the surface of the monitoring device 16 to protect the monitoring device 16.

[0029] like Figure 2 and Figure 4 As shown, a rubber layer is provided at the lower end of the test bench 1 to protect the bottom of the test bench 1. The spring 216 is slidably connected in the circular groove of the slider 212, so that the slider 212 can push one of the clamping bars 219 to swing.

[0030] like Figure 4 As shown, the surfaces of the two clamping bars 219 are provided with a rubber layer, which can reduce the damage caused by the two clamping bars 219 during collision. The two slide frames 220 are respectively slidably connected to the two side ends of the sliding frame 203, which can increase the sliding stability of the slide frames 220.

[0031] The working principle and use process of the present invention are as follows: a plurality of lithium battery packs are placed between two discharge test probes 204, and a discharge test is performed on the plurality of lithium battery packs by running the discharge tester 201, and then the slider 212 is driven to rotate by running the second motor 214, so that the slide bar 215 pushes one of the clamping bars 219 to dock with the other clamping bar 219, so that the two clamping bars 219 clamp the lithium battery pack, and then the electric suction head 13 is powered so that the electric suction head 13 and the docking head 12 are connected to each other by electromagnetic suction, and the lithium battery pack is installed in the two clamping bars 219, and the lithium battery pack can be driven to move to the collection point by running the second motor 214. The upper end of the slot 6 is reached by operating the first motor 205 to drive the gear 206 to rotate, so that the rack 207 slides on the test bench 1, and the sliding frame 203 moves to the upper end of the two clamping bars 219, and the two cylinders 213 are respectively driven to drive multiple puncture needles 209 and multiple extrusion blocks 208 to puncture and extrude the lithium battery pack. The operator can observe the tested lithium battery pack through the monitoring device 16. After the device performs discharge detection on the lithium battery packs in batches, the mobile mechanism drives the lithium battery pack to move to the collecting slot 6, and performs puncture and extrusion detection on the lithium battery pack through the mobile test mechanism, so as to achieve a more convenient effect during batch operation.

[0032] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lithium battery pack durability test device, characterized in that: include: A test bench (1), wherein a discharge tester (201) is fixedly connected to the upper end of the test bench (1), two discharge test probes (204) are fixedly connected to the side ends of the discharge tester (201), a mounting column (202) is fixedly connected to the upper end of the test bench (1), and two second slide grooves (9) are provided at the upper end of the test bench (1), and sliding frames (203) are slidably connected in the two second slide grooves (9); A moving mechanism, the moving mechanism comprising: a second motor (214), a slider (212), a sliding rod (215), a spring (216), a first sliding rod (217), a third sliding groove (10), a third sliding rod (14), two clamping bars (219) and a fixed rod (218), the second motor (214) being fixedly connected to the mounting column (202), the slider (212) being fixedly connected to the output end of the second motor (214), the sliding rod (215) being slidably connected to the slider (212), and the spring (216) being slidably connected to the circumferential surface of the sliding rod (215). The first slide bar (217) is rotatably connected to one end of the slide bar (215), the third slide groove (10) is opened at the upper end of the test bench (1), the third slide bar (14) is slidably connected in the third slide groove (10), the two clamping bars (219) are rotatably connected to each other through the third slide bar (14), the fixed rod (218) is fixedly connected to the lower side end of one of the clamping bars (219), the side end of one of the clamping bars (219) and the side end of the discharge tester (201) are both fixedly connected with an electromagnetic suction block (18), and the two electromagnetic suction blocks (18) are adsorbed and connected to each other; A mobile testing mechanism, the mobile testing mechanism comprising: a first motor (205), a gear (206), a rack (207), two fixed frames (211), two cylinders (213), two sliding frames (220), a plurality of extrusion blocks (208) and a plurality of puncture needles (209), the first motor (205) being fixedly connected to a circular groove of a testing table (1), the gear (206) being fixedly connected to an output end of the first motor (205), and the rack (207) being fixedly connected to a sliding frame. The two fixed frames (211) are respectively fixedly connected to the two side ends of the sliding frame (203), the two cylinders (213) are respectively fixedly connected in the two fixed frames (211), the two sliding frames (220) are respectively fixedly connected to the telescopic ends of the two cylinders (213), the plurality of extrusion blocks (208) are fixedly connected to one end of one of the sliding frames (220), and the plurality of puncture needles (209) are fixedly connected to one end of the other sliding frame (220).

2. A lithium battery pack durability testing device according to claim 1, characterized in that: The upper end of the test bench (1) is provided with a first slide groove (8), the lower end of the first slide rod (217) is slidably connected in the first slide groove (8), and the upper end of the test bench (1) is fixedly connected with a protective shell (3).

3. A lithium battery pack durability testing device according to claim 2, characterized in that: Two mounting tubes (5) are fixedly connected to the upper end of the sliding frame (203), and air pipes (4) are slidably connected inside the two mounting tubes (5).

4. A lithium battery pack durability testing device according to claim 3, characterized in that: A plurality of through holes (7) are provided at the upper end of the test bench (1), and a collecting trough (6) is provided at the upper end of the test bench (1).

5. A lithium battery pack durability testing device according to claim 4, characterized in that: One end of one of the clamping bars (219) is fixedly connected to a docking head (12), and one end of the other clamping bar (219) is fixedly connected to an electric suction head (13), and the electric suction head (13) is slidably connected inside the docking head (12).

6. A lithium battery pack durability testing device according to claim 5, characterized in that: The lower ends of the two fixed frames (211) are each provided with a fourth slide groove (17), the upper ends of the two sliding frames (220) are each fixedly connected to a second slide rod (11), and the two second slide rods (11) are respectively slidably connected to the two fourth slide grooves (17).

7. A lithium battery pack durability testing device according to claim 6, characterized in that: A monitoring device (16) is fixedly connected to the upper inner wall of the sliding frame (203), and a protective cover is provided on the surface of the monitoring device (16).

8. A lithium battery pack durability testing device according to claim 7, characterized in that: A rubber layer is provided at the lower end of the test bench (1), and the spring (216) is slidably connected in the circular groove of the slider (212).

9. A lithium battery pack durability testing device according to claim 8, characterized in that: The surfaces of the two clamping bars (219) are both provided with a rubber layer, and the two sliding frames (220) are respectively slidably connected to the two side ends of the sliding frame (203).

10. A lithium battery pack durability testing device according to claim 9, applied to a lithium battery pack durability testing method according to any one of claims 1 to 9, characterized in that: The steps include: S1. First, a plurality of lithium battery packs are placed between two discharge test probes (204), and a discharge test is performed on the plurality of lithium battery packs by running the discharge tester (201). Then, the slider (212) is driven to rotate by running the second motor (214), so that the slide bar (215) pushes one of the clamping bars (219) to dock with the other clamping bar (219), so that the two clamping bars (219) clamp the lithium battery packs. Then, power is supplied to the electric suction head (13), so that the electric suction head (13) and the docking head (12) are connected to each other by electromagnetic suction, and the lithium battery packs are installed in the two clamping bars (219); S2, the lithium battery pack can be driven to move to the upper end of the collecting tank (6) by operating the second motor (214), and then the first motor (205) is operated to drive the gear (206) to rotate, so that the rack (207) slides on the test bench (1), and the sliding frame (203) moves to the upper end of the two clamping bars (219), and the two cylinders (213) are respectively driven to puncture and squeeze the lithium battery pack. The operator can observe the lithium battery pack after the test through the monitoring device (16); S3. After testing the lithium battery pack, one end of the air pipe (4) can be connected to an air source, and the nozzle at the other end can be used to clean the lithium battery pack debris in the collection tank (6). The docking head (12) and the electric suction head (13) installed on the two clamping bars (219) can enable the two clamping bars (219) to fix multiple lithium battery packs. The first slide groove (8) provided on the test bench (1) can support multiple lithium battery packs to slide stably on the test bench (1).

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