Lithium ion battery extrusion test device

Abstract

The invention relates to the technical field of lithium ion testing, and discloses a lithium ion battery extrusion testing device which comprises a testing box body, a hydraulic rod is fixedly arranged in the testing box body, an extrusion plate is fixedly arranged at the bottom of the hydraulic rod, a supporting plate is arranged below the extrusion plate, and connecting grooves are formed in the supporting plate and a connecting frame in a penetrating mode. And a conveying belt is arranged in the connecting groove. According to the invention, the electric roller drives the conveyor belt to move in the test box body, and the circular positioning ring and the square positioning point on the conveyor belt are used for placing the circular lithium ion battery and the square lithium ion battery respectively, so that the lithium ion batteries of different models can be subjected to anti-extrusion detection one by one; and meanwhile, the lithium ion batteries which are well detected and damaged due to explosion are shunted in cooperation with a guide plate, an electric telescopic rod, a discharging groove and a waste battery collecting box, frequent taking by workers is not needed, and the working efficiency during detection is greatly improved.

Description

Technical Field

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

[0002] Lithium-ion battery is a rechargeable battery that mainly relies on the embedding and extraction of lithium ions between the positive and negative electrodes. It has the advantages of high energy, high discharge voltage platform, wide operating temperature range, and long storage life. It is widely used in many fields. During the production process, extrusion testing equipment is required to perform extrusion tests on samples of batteries to be shipped out.

[0003] The existing patent document CN116593305A discloses a battery extrusion test tool, including a bottom box, a bracket symmetrically provided with slide grooves is installed in the bottom box, covers are slidably connected on both sides of the slide grooves, a support plate is installed on the lower side of the cover, one side of the support plate is connected to one end of a spring, a support platform is installed on the bracket, a trigger mechanism of a locking spring is connected to the lower side of the support platform, a support plate is provided on one side of the bracket, a clamping mechanism for clamping the upper battery cell of the support platform is provided on the support plate, a support plate is installed on the support platform, a slider is provided on the support plate, a connecting rod is slidably connected to the slider, the connecting rod is provided with a through slot, and a terminal is bolted in the through slot.

[0004] The existing technology and patent can slide in the through groove to adjust the height of the terminal to meet the clamping requirements of battery cells of different sizes. The spring drives the mask to move and cover the support platform to reduce the degree of explosion when the battery burns. However, there are still some problems: the device requires the staff to repeatedly place and take the lithium-ion battery, which not only increases the workload of the staff but also reduces the testing efficiency of the lithium-ion battery. At the same time, the lithium-ion battery after the explosion still has the risk of secondary spontaneous combustion and burns. In addition, in this case, there is a certain safety hazard when the staff removes it. Therefore, it is necessary to provide a lithium-ion battery extrusion test device for improvement. Summary of the invention

[0005] The purpose of the present invention is to provide a lithium-ion battery extrusion test device to address the deficiencies of the prior art, aiming to improve the need to repeatedly place and take lithium-ion batteries, which increases the workload of staff and reduces the testing efficiency of lithium-ion batteries, as well as the problem that manual taking of lithium-ion batteries by staff may cause certain safety hazards and burns. The specific technical solution is as follows: A lithium-ion battery extrusion test device comprises a test box, a connecting frame is fixedly provided on one side of the test box, a battery placement box is sleeved on the front side of the connecting frame, a hydraulic rod is fixedly provided inside the test box, an extrusion plate is fixedly provided on the bottom of the hydraulic rod, a support plate is provided below the extrusion plate, a connecting groove is penetrated inside the support plate and the connecting frame, a conveyor belt is provided inside the connecting groove, the other side of the conveyor belt penetrates the connecting groove and is movably connected with the support plate and the surface of the connecting frame, an electric roller is provided inside the connecting groove, a plurality of circular positioning rings are fixedly provided on the surface of the conveyor belt, square positioning points are provided on one side of the circular positioning rings, a waste battery collection box is provided at the bottom end of the interior of the test box, a purification mechanism is fixedly provided on the top of the test box, the other end of the purification mechanism is penetrated above the waste battery collection box, a material discharge chute is penetrated on the front side of the test box, a silicone soft pad is fixedly provided inside the material discharge chute, and a flow guide mechanism is provided above the silicone soft pad.

[0006] Preferably, the purification mechanism includes a dry powder storage tank and a discharge pipe, the discharge pipe is fixedly arranged at the bottom of the dry powder storage tank, the discharge pipe is fixedly arranged at the bottom of the discharge pipe, an electromagnetic valve is arranged at the connection between the discharge pipe and the discharge pipe, a plurality of nozzles are arranged at the bottom of the discharge pipe, a branch pipe is fixedly arranged on the rear side of the test box, a purification box is fixedly arranged at the outlet end of the branch pipe, a suction fan is fixedly arranged inside the purification box, a filter screen is fixedly arranged on the top of the suction fan, and an activated carbon filter screen is fixedly arranged on the top of the filter screen.

[0007] Preferably, the number of branch pipes is two, and the suction ports of the branch pipes are respectively arranged at both ends of the hydraulic rod. A smoke sensor is arranged on one side of the hydraulic rod. Specific models of the smoke sensor include ABS-YW11 and RS485 gas concentration detector.

[0008] Preferably, the guide mechanism includes a reinforcement plate and a material guide plate, the internal hinge of the reinforcement plate is provided with the material guide plate, an electric telescopic rod is fixedly provided on one side of the material guide plate, the electric telescopic rod and the material guide plate are connected by a hinge, and an opening is provided between the material guide plate and the waste battery collection box.

[0009] Preferably, the conveyor belt is made of a metal mesh, a matching opening is provided through the connection between the conveyor belt and the test box, and a cleaning brush is fixedly provided in the opening.

[0010] Preferably, a connecting door is provided on the front side of the test box, an explosion-proof glass plate is provided above the connecting door, a controller panel is fixedly provided on one side of the test box, and a power strip is provided through the rear side of the test box.

[0011] Preferably, the number of the electric rollers is four, and the electric rollers are symmetrically arranged in groups of two at both ends of the conveyor belt.

[0012] Preferably, a plurality of pressure sensors are fixedly disposed on the bottom of the extrusion plate, and specific models of the pressure sensors include DP-101 pressure sensor and DSTP-140 pressure sensor.

[0013] Compared with the closest prior art, the technical solution provided by the present invention has the following beneficial effects: 1. The present invention provides a lithium-ion battery extrusion test device, which drives a conveyor belt to move inside a test box through an electric roller, and uses a circular positioning ring and a square positioning point on the conveyor belt to place circular and square lithium-ion batteries respectively, so that it can perform anti-extrusion tests on multiple lithium-ion batteries of different models one by one, and at the same time cooperates with a guide plate, an electric telescopic rod, a feed chute and a waste battery collection box to shunt the lithium-ion batteries that are intact and those that are damaged by explosion, without the need for workers to frequently take them, thereby greatly improving the work efficiency during testing; 2. A lithium-ion battery extrusion test device of the present invention detects whether a lithium-ion battery is extruded and exploded by a smoke sensor. Once an explosion signal is detected, a suction fan is turned on respectively. The smoke generated after the explosion is introduced into a purification box through a branch pipe by the suction fan, and the smoke and odor are filtered out after being discharged through a filter net and an activated carbon filter layer. At the same time, the dry powder storage tank will spray dry powder on the surface of the exploded lithium-ion battery entering the waste battery collection box when the solenoid valve is turned on, thereby achieving the beneficial effects of purifying and removing odor and quickly extinguishing the deflagrated lithium-ion battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front side schematic diagram of a test box and a connecting frame connection structure of a lithium-ion battery extrusion test device of the present invention; Figure 2 This is a schematic diagram of the structure of the rear side of the connection between the test box and the connecting frame of a lithium-ion battery extrusion test device of the present invention; Figure 3 A cross-sectional view of the internal structure of a test box and a connecting frame of a lithium-ion battery extrusion test device of the present invention; Figure 4 This is an enlarged view of point A of a lithium-ion battery extrusion test device of the present invention; Figure 5 This is an enlarged view of point B of a lithium-ion battery extrusion testing device of the present invention.

[0015] Legend: 1. Test box; 2. Connecting frame; 3. Battery placement box; 4. Hydraulic rod; 5. Extrusion plate; 6. Support plate; 7. Connection groove; 8. Conveyor belt; 9. Electric roller; 10. Circular positioning ring; 11. Square positioning point; 12. Waste battery collection box; 13. Feed chute; 14. Silicone cushion; 15. Dry powder storage tank; 16. Discharge pipe; 17. Discharge pipe; 18. Nozzle; 19. Branch pipe; 20. Purification box; 21. Suction fan; 22. Filter; 23. Activated carbon filter; 24. Smoke sensor; 25. Reinforcement plate; 26. Guide plate; 27. Electric telescopic rod; 28. Cleaning brush. DETAILED DESCRIPTION

[0016] 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.

[0017] See also Figure 1-Figure 5 , the present invention provides a technical solution: A lithium-ion battery extrusion test device comprises a test box 1, a connecting frame 2 is fixedly arranged on one side of the test box 1, a battery placement box 3 is sleeved on the front side of the connecting frame 2, a hydraulic rod 4 is fixedly arranged inside the test box 1, an extrusion plate 5 is fixedly arranged at the bottom of the hydraulic rod 4, and a plurality of pressure sensors are fixedly arranged at the bottom of the extrusion plate 5, and specific models of the pressure sensors include DP-101 pressure sensor and DSTP-140 pressure sensor, a support plate 6 is arranged below the extrusion plate 5, a connecting groove 7 is penetrated inside the support plate 6 and the connecting frame 2, a conveyor belt 8 is arranged inside the connecting groove 7, and the other side of the conveyor belt 8 penetrates the connecting groove 7 and the support plate 6 and the connecting frame 2. The surface of the connecting frame 2 is movably connected, and an electric roller 9 is arranged inside the connecting groove 7. The number of the electric rollers 9 is four, and the electric rollers 9 are symmetrically arranged in a group of two at both ends of the conveyor belt 8. A plurality of circular positioning rings 10 are fixedly arranged on the surface of the conveyor belt 8, and a square positioning point 11 is arranged on one side of the circular positioning ring 10. A waste battery collection box 12 is arranged at the bottom end of the inner part of the test box 1, and a purification mechanism is fixedly arranged on the top of the test box 1, and the other end of the purification mechanism is penetrated above the waste battery collection box 12. A material discharge chute 13 is penetrated on the front side of the test box 1, and a silicone pad 14 is fixedly arranged inside the material discharge chute 13, and a flow guide mechanism is arranged above the silicone pad 14.

[0018] In this embodiment: by setting a plurality of electric rollers 9, the electric rollers 9 drive the conveyor belt 8 to rotate in the connecting groove 7, and the circular positioning ring and the square positioning point on the conveyor belt are used to place circular and square lithium-ion batteries respectively, so that it can perform anti-extrusion detection on multiple lithium-ion batteries of different models one by one, and a certain distance is set between the circular positioning ring 10 and the square positioning point 11, so that only a single lithium-ion battery enters the test box 1 for detection each time, so as to avoid the damage of the lithium-ion battery at a close distance caused by the explosion of the lithium-ion battery. During the detection process, the hydraulic rod 4 is turned on, so that the hydraulic rod 4 drives the extrusion plate 5 to squeeze the lithium-ion battery on the conveyor belt 8. At the same time, the pressure sensor will monitor the pressure value at all times during the extrusion process, and then the lithium-ion battery will be tested for anti-extrusion. The lithium-ion battery that is tested intact will directly fall onto the silicone soft pad 14 in the discharge trough 13, and the lithium-ion battery that explodes will drive the guide plate 26 to move through the electric telescopic rod 27 to block the discharge trough 13, thereby diverting the lithium-ion batteries that are tested intact and those that are damaged by the explosion, without the need for the staff to frequently take them, which greatly improves the work efficiency during the detection.

[0019] Furthermore, the purification mechanism includes a dry powder storage tank 15 and a discharge pipe 16, the discharge pipe 16 is fixedly arranged at the bottom of the dry powder storage tank 15, the discharge pipe 17 is fixedly arranged at the bottom of the discharge pipe 16, a solenoid valve is arranged at the connection between the discharge pipe 16 and the discharge pipe 17, a plurality of nozzles 18 are arranged at the bottom of the discharge pipe 17, a branch pipe 19 is fixedly arranged on the rear side of the test box 1, a purification box 20 is fixedly arranged at the outlet end of the branch pipe 19, a suction fan 21 is fixedly arranged inside the purification box 20, a filter screen 22 is arranged on the top of the suction fan 21, and an activated carbon filter screen 23 is fixedly arranged on the top of the filter screen 22.

[0020] In this embodiment: by setting a suction fan 21, the smoke generated after the explosion is introduced into the purification box 20 through the branch pipe 19, and the smoke is filtered through the filter 22 and the activated carbon filter 23 to filter the smoke and odor and then discharged from the top of the purification box 20, so that the discharged gas can effectively reduce the pollution to the environment, and then enter the exploded lithium-ion battery in the waste battery collection box 12. When the solenoid valve is opened, the dry powder storage tank 15 sprays the dry powder on the surface of the exploded lithium-ion battery in the waste battery collection box 12 through the nozzle 18, thereby achieving the purpose of purifying and removing odor and quickly extinguishing the deflagrated lithium-ion battery.

[0021] Furthermore, the number of the branch pipes 19 is two, and the suction ports of the branch pipes 19 are respectively set at both ends of the hydraulic rod 4. A smoke sensor 24 is set on one side of the hydraulic rod 4. The specific models of the smoke sensor 24 include ABS-YW11 and RS485 gas concentration detector.

[0022] In this embodiment, by arranging the suction ports of the branch pipe 19 at the two ends of the hydraulic rod 4, the smoke and odor inside the test box 1 can be cleaned and deodorized.

[0023] Furthermore, the guide mechanism includes a reinforcement plate 25 and a material guide plate 26. The internal hinge of the reinforcement plate 25 is provided with the material guide plate 26. An electric telescopic rod 27 is fixedly provided on one side of the material guide plate 26. The electric telescopic rod 27 and the material guide plate 26 are connected by a hinge. An opening is provided between the material guide plate 26 and the waste battery collection box 12.

[0024] In this embodiment, the electric telescopic rod 27 is provided to drive the guide plate 26 to move forward and backward, so as to cover or open the feed chute 13, so as to facilitate the diversion of the lithium-ion batteries that are intact and those that are damaged by explosion.

[0025] Furthermore, the material of the conveyor belt 8 is a metal mesh, and a matching opening is provided through the connection between the conveyor belt 8 and the test box 1, and a cleaning brush 27 is fixedly provided in the opening.

[0026] In this embodiment, by providing a cleaning brush 27, dust and particles on the surface of the lithium-ion battery that enters the test box 1 through the opening can be cleaned, so that the detection effect is better.

[0027] Furthermore, a connecting door is provided on the front side of the test box 1 , an explosion-proof glass plate is provided above the connecting door, a controller panel is fixedly provided on one side of the test box 1 , and a power strip is provided through the rear side of the test box 1 .

[0028] In this embodiment: by providing a connecting door, the waste battery collection box 12 can be moved out of the interior of the test box 1, so as to facilitate the processing of the waste lithium-ion batteries in the waste battery collection box 12. By providing an explosion-proof glass plate, it is convenient for the staff to watch the test in the test box 1, and the entire device is connected to the power supply through the power socket.

[0029] The working principle of a lithium-ion battery extrusion testing device of the present invention is as follows: when using the lithium-ion battery extrusion detection device, firstly, the batteries in the battery placement box 3 are placed in the circular positioning ring 10 and above the square positioning point 11 according to different models, and multiple electric rollers 9 are turned on at the same time, so that the electric rollers 9 drive the conveyor belt 8 to rotate in the connecting groove 7, so that the lithium-ion batteries on the conveyor belt 8 are conveyed to the bottom of the extrusion plate 5, and a certain distance is set between the circular positioning ring 10 and the square positioning point 11, so that only a single lithium-ion battery enters the test box 1 for detection each time. When the lithium-ion battery enters the test box 1, it will pass through the cleaning brush 27, and the cleaning brush 27 will be used to clean the dust and particulate matter on the surface of the lithium-ion battery, so that the detection effect is better; during the detection process, the hydraulic rod 4 is turned on, so that the hydraulic rod 4 drives the extrusion plate 5 to squeeze the lithium-ion battery on the conveyor belt 8, and the pressure sensor will monitor the pressure value at all times during the extrusion process, so as to perform anti-extrusion detection on the lithium-ion battery, and detect whether it is intact The lithium-ion battery will directly fall onto the silicone pad 14 in the discharge chute 13, and when the lithium-ion battery explodes after being squeezed, the smoke sensor 24 will receive the smoke signal and transmit the signal to the controller panel, and the controller panel will simultaneously turn on the electric telescopic rod 27, the suction fan 21 and the solenoid valve, and the exploded lithium-ion battery will be continuously conveyed by the conveyor belt 8. Before that, the electric telescopic rod 27 will drive the guide plate 26 to move forward to block the discharge chute 13, so that the lithium-ion battery on the conveyor belt 8 will fall on the guide plate 26 and then slide down into the waste battery collection box 12, and the suction fan 21 will guide the smoke generated after the explosion into the purification box 20 through the branch pipe 19, and filter the smoke and odor through the filter net 22 and the activated carbon filter net 23 and then discharge it from the purification box 20, and at the same time, the dry powder storage tank 15 will also spray dry powder on the surface of the exploded lithium-ion battery in the waste battery collection box 12 through the nozzle 18 when the solenoid valve is turned on, thereby achieving the purpose of purifying and removing odor and quickly extinguishing the deflagrated lithium-ion battery.

[0030] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium-ion battery compression test device, comprising a test box (1), characterized in that: A connecting frame (2) is fixedly provided on one side of the test box (1), a battery placement box (3) is sleeved on the front side of the connecting frame (2), a hydraulic rod (4) is fixedly provided inside the test box (1), an extrusion plate (5) is fixedly provided at the bottom of the hydraulic rod (4), a support plate (6) is provided below the extrusion plate (5), a connecting groove (7) is penetrated inside the support plate (6) and the connecting frame (2), a conveyor belt (8) is provided inside the connecting groove (7), the other side of the conveyor belt (8) penetrates the connecting groove (7) and is movably connected to the support plate (6) and the surface of the connecting frame (2), and the inside of the connecting groove (7) An electric roller (9) is provided, a plurality of circular positioning rings (10) are fixedly provided on the surface of the conveyor belt (8), a square positioning point (11) is provided on one side of each of the circular positioning rings (10), a waste battery collection box (12) is provided at the bottom end of the interior of the test box (1), a purification mechanism is fixedly provided on the top of the test box (1), the other end of the purification mechanism is provided through the waste battery collection box (12), a material discharge chute (13) is provided through the front side of the test box (1), a silicone soft pad (14) is fixedly provided inside the material discharge chute (13), and a flow guide mechanism is provided above the silicone soft pad (14).

2. A lithium-ion battery extrusion test device according to claim 1, characterized in that: The purification mechanism comprises a dry powder storage tank (15) and a discharge pipe (16); the discharge pipe (16) is fixedly arranged at the bottom of the dry powder storage tank (15); the discharge pipe (16) is fixedly arranged at the bottom of the discharge pipe (16); a solenoid valve is arranged at the connection between the discharge pipe (16) and the discharge pipe (17); a plurality of nozzles (18) are arranged at the bottom of the discharge pipe (17); a branch pipe (19) is fixedly arranged at the rear side of the test box (1); a purification box (20) is fixedly arranged at the outlet end of the branch pipe (19); a suction fan (21) is fixedly arranged inside the purification box (20); a filter screen (22) is arranged at the top of the suction fan (21); and an activated carbon filter screen (23) is fixedly arranged at the top of the filter screen (22).

3. A lithium-ion battery extrusion test device according to claim 2, characterized in that: The number of the branch pipes (19) is two, and the suction ports of the branch pipes (19) are respectively arranged through the two ends of the hydraulic rod (4). A smoke sensor (24) is arranged on one side of the hydraulic rod (4), and specific models of the smoke sensor (24) include ABS-YW11 and RS485 gas concentration detector.

4. A lithium-ion battery extrusion testing device according to claim 1, characterized in that: The flow guide mechanism comprises a reinforcing plate (25) and a material guide plate (26); the reinforcing plate (25) is provided with a material guide plate (26) on an internal hinge; an electric telescopic rod (27) is fixedly provided on one side of the material guide plate (26); the electric telescopic rod (27) and the material guide plate (26) are connected via a hinge; an opening is provided between the material guide plate (26) and the waste battery collection box (12).

5. A lithium-ion battery extrusion testing device according to claim 1, characterized in that: The conveyor belt (8) is made of a metal mesh, and a matching opening is provided through the connection between the conveyor belt (8) and the test box (1), and a cleaning brush (27) is fixedly provided in the opening.

6. A lithium-ion battery extrusion test device according to claim 1, characterized in that: The front side of the test box (1) is provided with a connecting door, an explosion-proof glass plate is provided above the connecting door, a controller panel is fixedly provided on one side of the test box (1), and a power plug board is provided through the rear side of the test box (1).

7. A lithium-ion battery extrusion test device according to claim 1, characterized in that: The number of the electric rollers (9) is four, and the electric rollers (9) are symmetrically arranged in groups of two at both ends of the conveyor belt (8).

8. A lithium-ion battery extrusion testing device according to claim 1, characterized in that: A plurality of pressure sensors are fixedly arranged at the bottom of the extrusion plate (5), and specific models of the pressure sensors include DP-101 pressure sensor and DSTP-140 pressure sensor.

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