A lithium-ion battery internal battery thermal testing device

Abstract

The present invention discloses a lithium ion battery internal battery thermal testing device, which relates to the technical field of lithium ion batteries and comprises a testing device shell, the inner wall bottom of the testing device shell is fixedly connected with a storage bin, the top of the storage bin is fixedly connected with a testing mechanism, the testing mechanism comprises a testing mechanism bottom plate, the top rear side of the testing mechanism bottom plate is fixedly connected with a testing board, a top of the testing mechanism bottom plate is provided with a feeding chute on a side away from the testing board, the top of the testing board is fixedly connected with a conveying mechanism, and the present application can automatically complete the process of placing and removing lithium ion batteries by providing the testing mechanism and the storage bin, thereby significantly reducing the operation risk, the testing mechanism can automatically place the lithium ion battery on the testing board, and after completing the heating treatment, automatically send the battery back to the storage bin, the whole process does not require manual intervention, thereby greatly improving the safety and efficiency of the test.

Description

Technical Field

[0001] The invention relates to the technical field of lithium ion batteries, in particular to a lithium ion battery internal battery thermal testing device. Background Art

[0002] Lithium-ion batteries refer to batteries that use the movement of lithium ions between positive and negative electrodes to store and release energy. Due to their high energy density, long life and no memory effect, lithium-ion batteries are widely used in portable electronic devices, electric vehicles and energy storage systems.

[0003] According to the patent document: CN206497191U, a lithium-ion battery internal battery thermal test device is disclosed. The lithium-ion battery internal battery thermal test device includes a circuit board, characterized in that: the circuit boards are two arranged in parallel, the double circuit boards clamp and fix the thermistors on the inlay holes, there are 9 thermistors and their thickness is greater than the thickness of the double circuit boards; there are 27 inlay holes on the circuit board, and there is only one circuit board with an inlay hole at the position where the thermistor is installed; the end of the thermistor is connected to a wire A, and a wire B is soldered on the circuit board. The patent can flexibly adjust the position of the entire test component in the core package, and flexibly test the temperature information of different depths inside the battery as needed.

[0004] When conducting internal electrothermal testing on lithium-ion batteries, the batteries need to be heated to simulate the high temperature environment that the batteries may encounter during actual use. However, during the actual testing process, lithium-ion batteries may overheat, which can easily lead to safety problems such as battery swelling, leakage, and even explosion. In most testing devices, staff usually manually take out and put lithium-ion batteries into the testing device for heating. When the test is completed and some lithium-ion batteries are taken out, they may be in an unstable state, which undoubtedly increases the operational risk. Summary of the invention

[0005] The purpose of the present invention is to provide a lithium-ion battery internal battery thermal testing device to solve the problem that during the actual testing process proposed in the prior art, due to overheating of the lithium battery, safety problems such as battery swelling, leakage and even explosion may occur. In most testing devices, the staff usually manually takes out and puts the lithium-ion battery into the testing device for heating treatment. When the test is completed and some lithium-ion batteries are taken out, they may be in an unstable state, which undoubtedly increases the problem of operational risks.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A lithium-ion battery internal battery thermal testing device comprises a testing device shell, a storage bin is fixedly connected to the bottom of the inner wall of the testing device shell, and a testing mechanism is fixedly connected to the top of the storage bin; the testing mechanism comprises a testing mechanism bottom plate, a testing board is fixedly connected to the top rear side of the testing mechanism bottom plate, a feeding chute is provided on the side of the top of the testing mechanism bottom plate away from the testing board, a conveying mechanism is fixedly connected to the top of the testing board, and a placing mechanism is movably connected to the front side of the inner wall of the conveying mechanism.

[0008] Preferably, the test board includes a test board shell, a plurality of lithium battery placement tubes are fixedly connected to the front side of the test board shell, a motor placement plate is fixedly connected to the right side of the test board shell, and a motor is fixedly connected to the top of the motor placement plate.

[0009] Preferably, the output end of the motor is fixedly connected to a transmission disk, the outer wall of the transmission disk is covered with a track, and the inner sides of the track away from the transmission disk are respectively covered with a second transmission disk and a third transmission disk on both sides, and the left sides of the transmission disk, the second transmission disk and the third transmission disk are fixedly connected to a rotating rod, and the left ends of the three rotating rods extend to the inner wall of the test board shell and are rotatably connected to the left side of the inner wall of the test board shell.

[0010] Preferably, the three rotating rods extend to the inner wall of the test board shell and are rotatably connected to two limit blocks on three sides of the outer wall, the three rotating rods outer walls are fixedly connected with rotating blocks on both sides of the inner sides of multiple groups of limit blocks, the inner sides of multiple groups of rotating blocks are rotatably connected to hinge blocks on one side away from the rotating rods, multiple hinge blocks are rotatably connected to push-pull rods on one side away from the rotating blocks, multiple push-pull rods are rotatably connected to one side away from the hinge blocks with cylindrical push rods, and the outer walls of the multiple cylindrical push rods are slidably connected to the inner wall of the lithium battery placement tube.

[0011] Preferably, the conveying mechanism includes a conveying mechanism vertical plate, the front top of the conveying mechanism vertical plate is fixedly connected to a top plate, the left and right sides of the bottom of the top plate are respectively fixedly connected to slide plates, the inner bottom of the top plate is fixedly connected to a rack rod, the rear side of the left side of the rack rod is fixedly connected to a rack, one side of the two slide plates is provided with a slide groove, the front side of the left side of the left slide plate is fixedly connected to a screw connecting block, the left side of the conveying mechanism vertical plate is fixedly connected to a motor placement bin, the inner wall of the motor placement bin is fixedly connected to a second motor, the output end of the second motor is fixedly connected to a screw rod, and the front end of the screw rod is movably connected to the rear side of the screw rod connecting block.

[0012] Preferably, the placement mechanism includes a moving plate, the tops of the left and right sides of the moving plate are respectively fixedly connected with sliders, the outer walls of the two sliders are respectively slidably connected to the inner walls of the two slide grooves, the front side of the left bottom of the moving plate is fixedly connected with a transmission block, the inner wall of the transmission block is threadedly connected to the outer wall of the screw rod, the inner wall of the moving plate is rotatably connected with a placing plate rotating rod, the top end of the placing plate rotating rod extends to the top of the outer wall of the moving plate and is fixedly connected with a gear, the bottom end of the placing plate rotating rod extends to the bottom of the outer wall of the moving plate and is fixedly connected with a placing plate connecting block, and the bottom of the placing plate connecting block is fixedly connected to the placing plate.

[0013] Preferably, the placement plate includes a placement plate body, a plurality of battery fixing clamp connecting tubes are fixedly connected to the front side of the placement plate body, hydraulic push rod connecting blocks are fixedly connected to the left and right sides of the placement plate body respectively, the rear sides of the two hydraulic push rod connecting blocks are fixedly connected to hydraulic push rods, the rear ends of the two hydraulic push rods are fixedly connected to rear push-pull plate connecting blocks, and the opposite surfaces of the two rear push-pull plate connecting blocks are fixedly connected to rear push-pull plates.

[0014] Preferably, the front sides of multiple battery fixing clamp connecting tubes are fixedly connected to fixing clamp placement plates, the left and right sides of the front sides of multiple fixing clamp placement plates are fixedly connected to slide blocks, the inner walls of multiple groups of slide blocks are slidably connected to splint push-pull blocks, the inner sides of multiple groups of splint push-pull blocks are fixedly connected to semicircular splints, the outer sides of multiple groups of splint push-pull blocks are rotatably connected to rotating rods, multiple groups of rotating rods are rotatably connected to the second rotating rods on the side away from the slide blocks, multiple groups of the second rotating rods are rotatably connected to the third rotating rods on the side away from the second rotating rod, multiple groups of the third rotating rods are fixedly connected to pull tubes on the side away from the second rotating rod, and the rear ends of multiple pull tubes extend to the rear side of the placement plate body and are fixedly connected to the front side of the rear push-pull plate.

[0015] Preferably, the storage bin comprises a storage bin shell, an inner wall bottom of which is movably connected to a conveyor belt, a storage box conveying groove is provided on the right side of the storage bin shell, a storage box placement plate is fixedly connected to the right side of the storage bin shell, push plate slide grooves are provided on the front and rear sides of the storage box placement plate, spring connecting blocks are fixedly connected to the left sides of the front and rear sides of the storage box placement plate, a storage box push plate is movably connected to the right side of the inner wall of the storage box placement plate, and push plate sliders are fixedly connected to the front and rear sides of the storage box push plate, springs are fixedly connected to the left sides of the two push plate sliders, and the left ends of the two springs are fixedly connected to the right side of the spring connecting block.

[0016] Preferably, the top of the conveyor belt and the top of the inner side of the storage box placement plate are both movably connected with a plurality of storage box bodies, and the right side of the rightmost storage box body fits in contact with the left side of the storage box push plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present application is equipped with a testing mechanism and a storage bin, which can automatically complete the process of placing and removing lithium-ion batteries, significantly reducing operational risks. The testing mechanism can automatically place the lithium-ion battery on the test board, and after completing the heating treatment, automatically return the battery to the storage bin. The entire process does not require human intervention, greatly improving the safety and efficiency of the test.

[0019] 2. The present application is provided with a storage bin, which can automatically transport the tested lithium-ion batteries out of the outside of the testing device housing, and automatically push the storage box for the collected tested lithium-ion batteries to the position for collecting the lithium-ion batteries, thereby realizing the automation of the entire testing process, thereby reducing the tediousness and potential dangers of manual operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the main three-dimensional structure of a lithium-ion battery internal battery thermal testing device of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal three-dimensional structure of a main body of a lithium-ion battery internal battery thermal testing device of the present invention;

[0022] Figure 3 It is a schematic diagram of the three-dimensional separation structure of a test mechanism of a lithium-ion battery internal battery thermal test device of the present invention;

[0023] Figure 4 It is a schematic diagram of a three-dimensional separated cross-sectional structure of a test plate of a lithium-ion battery internal battery thermal test device of the present invention;

[0024] Figure 5 A schematic diagram of the internal three-dimensional structure of a test board of a lithium-ion battery internal battery thermal test device of the present invention;

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of a transmission mechanism of a lithium-ion battery internal battery thermal testing device of the present invention;

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of a placement mechanism of a lithium-ion battery internal battery thermal testing device of the present invention;

[0027] Figure 8 It is a schematic diagram of a three-dimensional separation structure of a placement plate of a lithium-ion battery internal battery thermal testing device of the present invention;

[0028] Fig. 9 It is a schematic diagram of the three-dimensional structure of a fixing clamp placement plate of a lithium-ion battery internal battery thermal testing device of the present invention;

[0029] Fig.10 The present invention is a schematic diagram of the three-dimensional separation structure of a placement compartment of a lithium-ion battery internal battery thermal testing device.

[0030] In the figure: 1. test device housing; 2. test mechanism; 21. test mechanism bottom plate; 22. feed chute; 23. test board; 231. test board housing; 232. lithium battery placement tube; 233. motor placement plate; 234. motor; 235. transmission plate; 236. crawler; 237. second transmission plate; 238. third transmission plate; 239. rotating rod; 2310. limit block; 2311. rotating block; 23 12. hinge block; 2313. push-pull rod; 2314. cylindrical push rod; 24. transmission mechanism; 241. transmission mechanism vertical plate; 242. top plate; 243. rack rod; 244. rack; 245. slide plate; 246. slide; 247. motor placement bin; 248. second motor; 249. screw rod; 2410. screw rod connecting block; 25. placement mechanism; 251. moving plate; 252. slider; 2 53, transmission block; 254, placement plate rotating rod; 255, gear; 256, placement plate connecting block; 257, placement plate; 2571, placement plate body; 2572, battery fixing clamp connecting pipe; 2573, hydraulic push rod connecting block; 2574, hydraulic push rod; 2575, rear push-pull plate; 2576, rear push-pull plate connecting block; 2577, fixed clamp placement plate; 2578, slide block; 2579, clamp plate push-pull Block; 2580, semicircular splint; 2581, rotating rod; 2582, second rotating rod; 2583, third rotating rod; 2584, pulling tube; 3, storage bin; 31, storage bin shell; 32, conveyor belt; 33, storage box conveying trough; 34, storage box placement plate; 35, push plate slide; 36, storage box push plate; 37, push plate slider; 38, spring; 39, spring connecting block; 310, storage box body. DETAILED DESCRIPTION

[0031] 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.

[0032] Example: Figure 1-2 As shown, the present invention provides a technical solution for a lithium-ion battery internal battery thermal testing device, including a testing device housing 1, a storage bin 3 is fixedly connected to the bottom of the inner wall of the testing device housing 1, and a testing mechanism 2 is fixedly connected to the top of the storage bin 3.

[0033] See also Figure 3-9The test mechanism 2 includes a test mechanism bottom plate 21, a test plate 23 is fixedly connected to the top rear side of the test mechanism bottom plate 21, a feeding chute 22 is provided on the top side of the test mechanism bottom plate 21 away from the test plate 23, a conveying mechanism 24 is fixedly connected to the top of the test plate 23, a placement mechanism 25 is movably connected to the front side of the inner wall of the conveying mechanism 24, the test plate 23 includes a test plate shell 231, a plurality of lithium battery placement tubes 232 are fixedly connected to the front side of the test plate shell 231, a motor placement plate 233 is fixedly connected to the right side of the test plate shell 231, a motor 234 is fixedly connected to the top of the motor placement plate 233, a transmission disc 235 is fixedly connected to the output end of the motor 234, and a track 236 is sleeved on the outer wall of the transmission disc 235. The second transmission disk 237 and the third transmission disk 238 are respectively sleeved on both sides of the inner side away from the transmission disk 235, and the left sides of the transmission disk 235, the second transmission disk 237 and the third transmission disk 238 are fixedly connected with a rotating rod 239. The left ends of the three rotating rods 239 extend to the inner wall of the test board shell 231 and are rotatably connected to the left side of the inner wall of the test board shell 231. The three rotating rods 239 extend to the outer wall of the inner wall of the test board shell 231 and are rotatably connected to two limit blocks 2310 on three sides. The outer walls of the three rotating rods 239 are fixedly connected with rotating blocks 2311 on both sides of the inner sides of the multiple groups of limit blocks 2310. The inner sides of the multiple groups of rotating blocks 2311 are rotatably connected with hinge blocks 2312 on one side away from the rotating rods 239. The multiple hinge blocks 2312 are away from the rotating rods 239. One side of the movable block 2311 is rotatably connected with a push-pull rod 2313, and the side of multiple push-pull rods 2313 away from the hinge block 2312 is rotatably connected with a cylindrical push rod 2314. The outer walls of multiple cylindrical push rods 2314 are slidably connected to the inner wall of the lithium battery placement tube 232. The transmission mechanism 24 includes a transmission mechanism vertical plate 241, and the front top of the transmission mechanism vertical plate 241 is fixedly connected with a top plate 242, and the left and right sides of the bottom of the top plate 242 are respectively fixedly connected with a slide plate 245, and the inner bottom of the top plate 242 is fixedly connected with a rack rod 243, and the rear side of the left side of the rack rod 243 is fixedly connected with a rack 244. A slide groove 246 is provided on one side of the two slide groove plates 245, and the front side of the left side of the left slide groove plate 245 is fixedly connected with a wire mesh. Rod connecting block 2410, the left side of the transmission mechanism vertical plate 241 is fixedly connected with a motor placement bin 247, the inner wall of the motor placement bin 247 is fixedly connected with a second motor 248, the output end of the second motor 248 is fixedly connected with a screw rod 249, the front end of the screw rod 249 is movably connected to the rear side of the screw rod connecting block 2410, the placement mechanism 25 includes a moving plate 251, the tops of the left and right sides of the moving plate 251 are respectively fixedly connected with sliders 252, the outer walls of the two sliders 252 are respectively slidably connected to the inner walls of the two slide grooves 246, the front side of the left bottom of the moving plate 251 is fixedly connected with a transmission block 253, the inner wall of the transmission block 253 is threadedly connected to the outer wall of the screw rod 249, and the inner wall of the moving plate 251 is rotatably connected with a placement plate rotating rod 254,The top end of the placement plate rotating rod 254 extends to the top of the outer wall of the moving plate 251 and is fixedly connected to a gear 255, the bottom end of the placement plate rotating rod 254 extends to the bottom of the outer wall of the moving plate 251 and is fixedly connected to a placement plate connecting block 256, the bottom of the placement plate connecting block 256 is fixedly connected to a placement plate 257, the placement plate 257 includes a placement plate body 2571, the front side of the placement plate body 2571 is fixedly connected to a plurality of battery fixing clamp connecting tubes 2572, the left and right sides of the placement plate body 2571 are respectively fixedly connected to hydraulic push rod connecting blocks 2573, the rear sides of the two hydraulic push rod connecting blocks 2573 are fixedly connected to hydraulic push rods 2574, the rear ends of the two hydraulic push rods 2574 are fixedly connected to rear push-pull plate connecting blocks 2576, the opposite sides of the two rear push-pull plate connecting blocks 2576 are fixedly connected to rear push-pull plates 2575, the front sides of the plurality of battery fixing clamp connecting tubes 2572 A fixed clamp placement plate 2577 is fixedly connected, and a plurality of fixed clamp placement plates 2577 are fixedly connected to the left and right sides of the front side thereof, and a plurality of groups of slide blocks 2578 are slidably connected to the inner walls of the plurality of slide blocks 2578 with a clamping plate push-pull block 2579, and a plurality of groups of clamping plate push-pull blocks 2579 are fixedly connected to the inner sides with a semicircular clamping plate 2580, and a plurality of groups of clamping plate push-pull blocks 2579 are rotatably connected to the outer sides with a rotating rod 2581, and a plurality of groups of rotating rods 2581 are rotatably connected to a second rotating rod 2582 on a side away from the slide block 2578, and a plurality of groups of second rotating rods 2582 are rotatably connected to a third rotating rod 2583 on a side away from the rotating rod 2581, and a plurality of groups of third rotating rods 2583 are fixedly connected to a pull tube 2584 on a side away from the second rotating rod 2582, and a plurality of rear ends of the pull tubes 2584 extend to the rear side of the placement plate body 2571 and are fixedly connected to the front side of the rear push-pull plate 2575;

[0034] When it is necessary to test the lithium-ion batteries, firstly, multiple lithium-ion batteries to be tested are placed on the inner side of multiple groups of semicircular clamps 2580, and then two hydraulic push rods 2574 are started to pull the rear push-pull plate connecting block 2576 to drive the rear push-pull plate 2575 to move forward, and the rear push-pull plate 2575 moves forward, thereby driving multiple pull tubes 2584 to move forward, driving the third rotating rod 2583 on both sides of the outer wall to pull the second rotating rod 2582 to rotate, and the rotation of the second rotating rod 2582 drives the rotating rod 2581 to rotate, and the rotation of the rotating rod 2581 drives the clamp push-pull block 2579 to slide along the slide block 2578, so that the semicircular clamp 2580 moves inward and clamps the lithium-ion battery, and then , start the second motor 248 to rotate the screw rod 249, and the transmission block 253 moves along the thread of the screw rod 249, thereby driving the moving plate 251 to move backward. When the moving plate 251 moves to the rear side through the transmission of the screw rod 249, the top gear 255 moves to a position meshing with the rack 244, and the gear 255 meshes with the rack 244 to drive the placement plate connecting block 256 and the placement plate 257 at its bottom to rotate. The placement plate 257 rotates to make the side of the fixed lithium-ion battery face the front side of the test plate housing 231. At this time, the screw rod 249 continuously drives the moving plate 251 to move backward, so that the multiple lithium batteries fixed on the front side of the placement plate 257 are inserted into the inner wall of the multiple lithium battery placement tubes 232;

[0035] Then, the two hydraulic push rods 2574 are started in reverse to make the multiple groups of semicircular clamping plates 2580 expand outward to release the lithium-ion batteries, so that the lithium-ion batteries are placed on the inner wall of the lithium-ion battery placement tube 232, and then the second motor 248 is started in reverse to drive the moving plate 251 and the placement plate 257 at the bottom thereof to return to the original position;

[0036] The lithium-ion battery is tested inside the inner wall of the lithium battery placement tube 232. During the test, the battery's temperature, voltage, current and other parameters will be monitored and recorded in real time. After the test is completed, the motor 234 is started. After the motor 234 is started, the transmission disc 235 rotates. The transmission disc 235 rotates and then drives the second transmission disc 237 and the third transmission disc 238 to rotate simultaneously through the track 236 on the outer wall. When the transmission disc 235, the second transmission disc 237 and the third transmission disc 238 rotate, they drive the multiple rotating rods 239 on the left side to rotate. The rotation of the multiple rotating rods 239 drives the multiple groups of rotating blocks 2311 to rotate. The rotation of the multiple groups of rotating blocks 2311 drives the hinged blocks 2312 on the inner wall to rotate. The rotation of the hinged blocks 2312 drives the push-pull rod 2313 to rotate the cylindrical push rod 2314 on the inner wall of the lithium battery placement tube 232, thereby pushing the lithium-ion battery on the inner wall of the lithium battery placement tube 232 out through the discharge chute 22 and falling into the storage bin 3 at the bottom.

[0037] See also Fig.10The storage bin 3 includes a storage bin shell 31, a conveyor belt 32 is movably connected to the bottom of the inner wall of the storage bin shell 31, a storage box conveying groove 33 is opened on the right side of the storage bin shell 31, a storage box placement plate 34 is fixedly connected to the right side of the storage bin shell 31, a push plate slide 35 is opened on the front and rear sides of the storage box placement plate 34, and spring connecting blocks 39 are fixedly connected to the left sides of the front and rear sides of the storage box placement plate 34, and a storage box push plate 36 is movably connected to the right side of the inner wall of the storage box placement plate 34, and push plate sliders 37 are fixedly connected to the front and rear sides of the storage box push plate 36, and springs 38 are fixedly connected to the left sides of the two push plate sliders 37, and the left ends of the two springs 38 are fixedly connected to the right side of the spring connecting block 39, and a plurality of storage box bodies 310 are movably connected to the top of the conveyor belt 32 and the top of the inner side of the storage box placement plate 34, and the right side of the rightmost storage box body 310 fits the left side of the storage box push plate 36;

[0038] When the lithium-ion battery falls into the inner wall of the storage bin 3, it falls on the inner wall of the storage box body 310 at the top of the conveyor belt 32. When the inner wall of the storage box body 310 is full of tested lithium-ion batteries, the conveyor belt 32 is started to convey the top storage box body 310 to the front side and transport it out of the outer wall of the test device shell 1. When the conveyor belt 32 transports the storage box body 310 to the front side, after the storage box body 310 is transported out of the outer wall of the test device shell 1, since the inner wall of the rightmost storage box body 310 is in contact with the inner side of the storage box placement plate 34, the storage box push plate 36 is pushed to the left by the spring 38, so that the next storage box body 310 that has not been stored is pushed to the top of the conveyor belt 32 on the inner wall of the storage bin shell 31, and the tested lithium-ion batteries continue to be collected.

[0039] Working principle: When it is necessary to test lithium-ion batteries, firstly, multiple lithium-ion batteries to be tested are placed on the inner side of multiple groups of semicircular clamps 2580, and then two hydraulic push rods 2574 are started to pull the rear push-pull plate connecting block 2576 to drive the rear push-pull plate 2575 to move forward, and the rear push-pull plate 2575 moves forward, thereby driving multiple pull tubes 2584 to move forward, driving the third rotating rod 2583 on both sides of the outer wall to pull the second rotating rod 2582 to rotate, and the rotation of the second rotating rod 2582 drives the rotating rod 2581 to rotate, and the rotation of the rotating rod 2581 drives the clamp push-pull block 2579 to slide along the slide block 2578, so that the semicircular clamp 2580 moves inward. The second motor 248 is then started to rotate the screw rod 249, and the transmission block 253 moves along the thread of the screw rod 249, thereby driving the movable plate 251 to move backward. When the movable plate 251 moves backward through the transmission of the screw rod 249, the top gear 255 moves to a position meshing with the rack 244, and the gear 255 meshes with the rack 244 to drive the placement plate connecting block 256 and the placement plate 257 at its bottom to rotate. The placement plate 257 rotates to make the side of the fixed lithium-ion battery face the front side of the test plate housing 231. At this time, the screw rod 249 continuously drives the movable plate 251 to move backward, so that the front side of the placement plate 257 is fixed. The multiple lithium batteries are inserted into the inner wall of the multiple lithium battery placement tubes 232, and then the two hydraulic push rods 2574 are reversely started to expand the multiple groups of semicircular clamps 2580 outward to loosen the lithium-ion batteries, so that the lithium-ion batteries are placed on the inner wall of the lithium battery placement tube 232, and then the second motor 248 is reversely started to drive the moving plate 251 to bring the placement plate 257 at its bottom back to its original position, and the lithium-ion batteries are tested inside the inner wall of the lithium battery placement tube 232. During the test, the temperature, voltage, current and other parameters of the battery will be monitored and recorded in real time. After the test is completed, the motor 234 is started. After the motor 234 is started, the transmission disk 235 rotates, and the transmission disk 235 rotates Then, the crawler belt 236 on the outer wall drives the second transmission disc 237 and the third transmission disc 238 to rotate simultaneously. When the transmission disc 235, the second transmission disc 237 and the third transmission disc 238 rotate, they drive the multiple rotating rods 239 on the left side to rotate. The multiple rotating rods 239 rotate to drive the multiple groups of rotating blocks 2311 to rotate. The multiple groups of rotating blocks 2311 rotate to drive the hinge blocks 2312 on the inner wall to rotate. The hinge blocks 2312 rotate to drive the push-pull rod 2313 to rotate to push and pull the cylindrical push rod 2314 on the inner wall of the lithium battery placement tube 232, so that the lithium-ion batteries on the inner wall of the lithium battery placement tube 232 are pushed out through the discharge chute 22 and fall into the storage bin 3 at the bottom.

[0040] When the lithium-ion battery falls into the inner wall of the storage bin 3, it falls on the inner wall of the storage box body 310 at the top of the conveyor belt 32. When the inner wall of the storage box body 310 is full of tested lithium-ion batteries, the conveyor belt 32 is started to convey the top storage box body 310 to the front side and transport it out of the outer wall of the test device shell 1. When the conveyor belt 32 transports the storage box body 310 to the front side, after the storage box body 310 is transported out of the outer wall of the test device shell 1, since the inner wall of the rightmost storage box body 310 is in contact with the inner side of the storage box placement plate 34, the storage box push plate 36 is pushed to the left by the spring 38, so that the next storage box body 310 that has not been stored is pushed to the top of the conveyor belt 32 on the inner wall of the storage bin shell 31, and the tested lithium-ion batteries continue to be collected.

[0041] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A lithium-ion battery internal battery thermal testing device, characterized in that: The test device comprises a test device housing (1), the bottom of the inner wall of the test device housing (1) is fixedly connected to a storage bin (3), and the top of the storage bin (3) is fixedly connected to a test mechanism (2); the test mechanism (2) comprises a test mechanism bottom plate (21), the top rear side of the test mechanism bottom plate (21) is fixedly connected to a test board (23), a top side of the test mechanism bottom plate (21) away from the test board (23) is provided with a material discharge chute (22), the top of the test board (23) is fixedly connected to a conveying mechanism (24), and the front side of the inner wall of the conveying mechanism (24) is movably connected to a placement mechanism (25); The test board (23) comprises a test board housing (231), a plurality of lithium battery placement tubes (232) are fixedly connected to the front side of the test board housing (231), a motor placement plate (233) is fixedly connected to the right side of the test board housing (231), and a motor (234) is fixedly connected to the top of the motor placement plate (233); The output end of the motor (234) is fixedly connected to a transmission disc (235), the outer wall of the transmission disc (235) is covered with a crawler belt (236), the inner sides of the crawler belt (236) away from the transmission disc (235) are respectively covered with a second transmission disc (237) and a third transmission disc (238), the left sides of the transmission disc (235), the second transmission disc (237) and the third transmission disc (238) are all fixedly connected to rotating rods (239), and the left ends of the three rotating rods (239) extend to the inner wall of the test board housing (231) and are rotatably connected to the left side of the inner wall of the test board housing (231); The three rotating rods (239) extend to the inner wall of the test board housing (231) and are rotatably connected to two limit blocks (2310) on three sides of the outer wall of the three rotating rods (239); the outer walls of the three rotating rods (239) are fixedly connected to rotating blocks (2311) on both sides of the inner sides of the multiple groups of limit blocks (2310); the inner sides of the multiple groups of rotating blocks (2311) are rotatably connected to hinge blocks (2312) on the sides away from the rotating rods (239); the hinge blocks (2312) are rotatably connected to push-pull rods (2313) on the sides away from the rotating blocks (2311); the push-pull rods (2313) are rotatably connected to cylindrical push rods (2314) on the sides away from the hinge blocks (2312); and the outer walls of the multiple cylindrical push rods (2314) are slidably connected to the inner wall of the lithium battery placement tube (232).

2. The lithium-ion battery internal battery thermal testing device according to claim 1, characterized in that: The conveying mechanism (24) comprises a conveying mechanism upright plate (241), the front top of the conveying mechanism upright plate (241) is fixedly connected to a top plate (242), the left and right sides of the bottom of the top plate (242) are respectively fixedly connected to slide groove plates (245), the inner bottom of the top plate (242) is fixedly connected to a rack rod (243), the rear side of the left side of the rack rod (243) is fixedly connected to a rack (244), and one side of the two slide groove plates (245) is provided with a slide groove. The left side of the sliding groove plate (245) is fixedly connected to a screw rod connecting block (2410) on the front side of the left side, the left side of the conveying mechanism vertical plate (241) is fixedly connected to a motor placement bin (247), the inner wall of the motor placement bin (247) is fixedly connected to a second motor (248), the output end of the second motor (248) is fixedly connected to a screw rod (249), and the front end of the screw rod (249) is movably connected to the rear side of the screw rod connecting block (2410).

3. The lithium-ion battery internal battery thermal testing device according to claim 2, characterized in that: The placement mechanism (25) comprises a moving plate (251), the tops of the left and right sides of the moving plate (251) are respectively fixedly connected with sliders (252), the outer walls of the two sliders (252) are respectively slidably connected to the inner walls of the two slide grooves (246), the front side of the left bottom of the moving plate (251) is fixedly connected with a transmission block (253), the inner wall of the transmission block (253) is threadedly connected to the outer wall of the screw rod (249), the inner wall of the moving plate (251) is rotatably connected with a placement plate rotating rod (254), the top end of the placement plate rotating rod (254) extends to the top of the outer wall of the moving plate (251) and is fixedly connected with a gear (255), the bottom end of the placement plate rotating rod (254) extends to the bottom of the outer wall of the moving plate (251) and is fixedly connected with a placement plate connecting block (256), and the bottom of the placement plate connecting block (256) is fixedly connected with a placement plate (257).

4. The lithium-ion battery internal battery thermal testing device according to claim 3, characterized in that: The placement plate (257) comprises a placement plate body (2571), the front side of the placement plate body (2571) is fixedly connected with a plurality of battery fixing clamp connection tubes (2572), the left and right sides of the placement plate body (2571) are respectively fixedly connected with hydraulic push rod connection blocks (2573), the rear sides of the two hydraulic push rod connection blocks (2573) are fixedly connected with hydraulic push rods (2574), the rear ends of the two hydraulic push rods (2574) are fixedly connected with rear push-pull plate connection blocks (2576), and the opposite sides of the two rear push-pull plate connection blocks (2576) are fixedly connected with rear push-pull plates (2575).

5. The lithium-ion battery internal battery thermal testing device according to claim 4, characterized in that: The front sides of the plurality of battery fixing clamp connection tubes (2572) are fixedly connected with a fixing clamp placement plate (2577), the left and right sides of the front sides of the plurality of fixing clamp placement plates (2577) are fixedly connected with a slide block (2578), the inner walls of the plurality of groups of slide blocks (2578) are slidably connected with a splint push-pull block (2579), the inner sides of the plurality of groups of splint push-pull blocks (2579) are fixedly connected with a semicircular splint (2580), the outer sides of the plurality of groups of splint push-pull blocks (2579) are rotatably connected with a rotating rod (2581), and the plurality of groups of The side of the rotating rod (2581) away from the slide block (2578) is rotatably connected to the second rotating rod (2582), and the side of multiple groups of the second rotating rods (2582) away from the rotating rod (2581) is rotatably connected to the third rotating rod (2583), and the side of multiple groups of the third rotating rods (2583) away from the second rotating rod (2582) is fixedly connected to the pull tube (2584), and the rear ends of the multiple pull tubes (2584) extend to the rear side of the placement plate body (2571) and are fixedly connected to the front side of the rear push-pull plate (2575).

6. The lithium-ion battery internal battery thermal testing device according to claim 5, characterized in that: The storage bin (3) comprises a storage bin shell (31), the bottom of the inner wall of the storage bin shell (31) is movably connected to a conveyor belt (32), the right side of the storage bin shell (31) is provided with a storage box conveying groove (33), the right side of the storage bin shell (31) is fixedly connected to a storage box placement plate (34), the front and rear sides of the storage box placement plate (34) are respectively provided with push plate sliding grooves (35), the left sides of the front and rear sides of the storage box placement plate (34) are respectively fixedly connected to spring connecting blocks (39), the right side of the inner wall of the storage box placement plate (34) is movably connected to a storage box push plate (36), the front and rear sides of the storage box push plate (36) are respectively fixedly connected to push plate sliders (37), the left sides of the two push plate sliders (37) are both fixedly connected to springs (38), and the left ends of the two springs (38) are both fixedly connected to the right side of the spring connecting block (39).

7. The lithium-ion battery internal battery thermal testing device according to claim 6, characterized in that: The top of the conveyor belt (32) and the top of the inner side of the storage box placement plate (34) are both movably connected to a plurality of storage box bodies (310), and the right side of the rightmost storage box body (310) fits the left side of the storage box push plate (36).

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