Battery pack performance detection device and use method thereof

Abstract

The invention belongs to the technical field of battery detection, and discloses a battery pack performance detection device and a use method thereof.The battery pack performance detection device comprises a detection device body, a protective door is hinged to the side wall of the detection device body, a storage plate is installed in the detection device body through a moving assembly, and detection assemblies are arranged on the two sides of the storage plate; the top end of the storage plate is fixedly provided with a limiting back plate, the top end of the limiting back plate is provided with two wiring plates, one end of each wiring plate is internally provided with a clamping groove, and the top end of each wiring plate is fixedly connected with a connecting block. Firstly, a to-be-detected battery pack is installed at the top end of the storage plate, then the storage plate bears the battery pack to move into the detection cavity, then the two partition plates move inwards to be reset so that the detection cavity and the interior of the detection device body can be sealed, finally the temperature in the detection cavity can be changed through the temperature control element, and different temperature environments can be simulated. And detecting the performance of the battery pack.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery detection, and specifically relates to a battery pack performance detection device and a use method thereof. Background Art

[0002] A battery pack is a power source composed of multiple batteries connected in series or in parallel. It has a wide range of applications, including portable electronic devices, power tools and household appliances, electric vehicles, energy storage systems and solar power generation systems.

[0003] Battery packs play a key role in various applications. By testing the performance of battery packs, potential safety issues such as battery overheating, internal short circuit or electrolyte leakage can be discovered in time, so as to adjust the use and maintenance strategies to extend the service life of the battery pack;

[0004] At present, common technical means for testing battery pack performance include the use of professional testing equipment such as internal resistance testers and discharge testers. These devices can accurately evaluate the health status and performance level of battery packs to a certain extent. However, since the molecular movement inside the battery pack will change with the change of temperature, conventional testing methods are usually carried out at room temperature. This means that at different ambient temperatures, the actual performance of the battery pack may differ from the test results. Therefore, testing the battery pack only at room temperature is likely to lead to an incomplete evaluation, thereby affecting the accuracy of the test results. Summary of the invention

[0005] The object of the present invention is to provide a battery pack performance detection device and a method of using the same to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a battery pack performance detection device, comprising a detection device body, a side wall of the detection device body is hinged with a protective door, a storage plate is installed inside the detection device body through a moving component, both sides of the storage plate are provided with detection components, a limit back plate is fixedly installed on the top of the storage plate, two wire racks are arranged on the top of the limit back plate, a card slot is opened inside one end of the two wire racks, and the tops of the two wire racks are fixedly connected with a connecting block;

[0007] The detection assembly includes a detection chamber and an air supply chamber opened inside the detection device body, a temperature control element is installed inside the air supply chamber, a sealing assembly is arranged between the detection chamber and the detection device body, a connection box is installed on the top of the detection chamber, a connection line is connected to the top of the connection box, the connection line passes through the inside of the detection device body and extends to the top of the detection device body and is installed on the side wall of the detector, and the detector is arranged on the top of the detection device body;

[0008] The moving assembly comprises a moving block fixedly mounted on the bottom end of the storage plate, the inner thread of the moving block is connected with a first threaded rod, and a first motor is mounted on one end of the first threaded rod;

[0009] The sealing assembly includes a partition slidably installed inside the main body of the detection device, and two partitions are symmetrically arranged. The top ends of the two partitions are installed on the outer wall of the third threaded rod, and one end of the third threaded rod is connected to the second motor. A second connecting plate is fixedly installed on one side of the two partitions, and a first connecting plate is arranged on one side of the two second connecting plates. A protective cover is fixedly installed on one end of the two first connecting plates, and the protective cover is arranged below the connecting box. The protective cover is slidably installed inside the limit groove, and the limit groove is opened inside the main body of the detection device.

[0010] As a further technical solution of the present invention, a connecting rod is fixedly connected to the bottom end of the wire rack, a limiting plate is fixedly installed on the bottom end of the connecting rod, the limiting plate is slidably installed inside the limiting back plate, and a tension spring is arranged between the limiting plate and the limiting back plate.

[0011] As a further technical solution of the present invention, baffles are provided on both sides of the moving block.

[0012] As a further technical solution of the present invention, the baffle is slidably installed inside the moving block, and a spring is arranged between the baffle and the moving block.

[0013] As a further technical solution of the present invention, a fixed plate is slidably installed on the top of the storage plate, and the internal thread of the fixed plate is connected to a second threaded rod, the second threaded rod is rotatably installed inside the storage plate, and one end of the second threaded rod is fixedly connected to a rotating block, and the rotating block is arranged on one side of the storage plate.

[0014] As a further technical solution of the present invention, a first row of fans is installed inside the air supply cavity.

[0015] As a further technical solution of the present invention, guide plates are arranged inside the air supply cavity, and the guide plates are evenly distributed.

[0016] As a further technical solution of the present invention, each of the guide plates is rotatably installed inside the air supply chamber through a rotating shaft, a coil spring is installed on the outer wall of one of the rotating shafts, a gear is fixedly installed on the bottom end of each rotating shaft, and a rack plate is meshedly connected to one side of the gear.

[0017] As a further technical solution of the present invention, a second exhaust fan is arranged above the storage plate, and the second exhaust fan is installed on the top of the detection device body.

[0018] A method for using a battery pack performance detection device comprises the following steps:

[0019] S1: When testing the performance of the battery pack, first open the protective door, then place the battery pack to be tested on the top of the storage plate and between the limit back plate and the fixed plate, rotate the rotating block to drive the second threaded rod to rotate, and the rotation of the second threaded rod drives the fixed plate to rotate, so that the fixed plate and the limit back plate cooperate to fix the battery pack, then clamp the connecting wire of the battery pack in the slot, and place the connector on the top of the wire rack;

[0020] S2: Then the third threaded rod is driven to rotate by the second motor. The rotation of the third threaded rod drives the two partitions to move outward to open the detection chamber. The movement of the partition drives the movement of the second connecting plate. The movement of the second connecting plate drives the movement of the first connecting plate. The movement of the first connecting plate drives the movement of the protective cover, so that the two protective covers move outward to expose the connection box.

[0021] S3: The first motor is then used to drive the first threaded rod to rotate, and the rotation of the first threaded rod drives the movement of the moving block, and the movement of the moving block drives the storage plate carrying the battery pack to move into the detection chamber, and the movement of the storage plate drives the movement of the limit back plate, and the movement of the limit back plate drives the movement of the wire rack plate, and the movement of the wire rack plate drives the movement of the connecting block, and when the connecting block moves to the slot below the protective cover, the two are magnetically connected and engaged, prompting the wire rack plate to move upward for a distance, so that the connecting wire of the battery pack is engaged with the inside of the connection box, and the partition is driven to close by the third threaded rod, so that the detection chamber is in a sealed state;

[0022] S4: Then, the temperature inside the detection chamber is controlled by the temperature control element, and the first exhaust fan is started to promote the flow of gas inside the air supply chamber and the detection chamber to accelerate the temperature rise. When the gas flows to the tail end of the air supply chamber, the guide plate at the tail end is caused to rotate. The rotation of the guide plate drives the rotation of the rotating shaft. The rotation of the rotating shaft drives the rotation of the gear. The rotation of the gear drives the movement of the rack plate. Through the connection of the rack plate, all the guide plates inside the air supply chamber are caused to rotate, so that the air circulates evenly.

[0023] S5: Finally, the performance of the battery pack at different temperatures is tested by the detector. After the test, the partition is opened again, the storage plate is moved back between the two test chambers, and the temperature is restored by the second row of fans. After resetting, it is moved to the test chamber on the right for low-temperature testing.

[0024] The beneficial effects of the present invention are as follows:

[0025] 1. The present invention is configured by cooperating with a detection component, a moving component and a sealing component. When testing the performance of a battery pack, the battery pack to be tested is first placed on the top of the storage plate, and then the connecting wire of the battery pack is clamped in the card slot, and the connector is placed on the top of the wiring board. After the battery pack is installed, the third threaded rod is driven to rotate by the second motor, and the rotation of the third threaded rod drives the two partitions to move outward to open the detection cavity. Then, the first threaded rod is driven to rotate by the first motor, and the rotation of the first threaded rod drives the movement of the moving block. The movement of the moving block drives the storage plate carrying the battery pack to move into the detection cavity, and then the two partitions are moved inward to reset so that the detection cavity is sealed with the main body of the detection device. After the battery pack moves to the bottom of the connection box, the connector is connected with the connection box by snapping. Finally, the temperature in the detection cavity is changed by the temperature control element to simulate different temperature environments and test the performance of the battery pack.

[0026] 2. The present invention cooperates with the fixed plate and the limiting back plate. Before testing the performance of the battery pack, the second threaded rod is driven to rotate by rotating the rotating block. The rotation of the second threaded rod drives the fixed plate to move toward the side close to the limiting back plate to fix the battery pack to be tested, thereby ensuring the stability of the storage plate during the movement of the battery pack.

[0027] 3. The present invention provides a second row of fans. After the battery pack undergoes a temperature detection, it is moved back to the chamber between the two detection chambers. The second row of fans allows the battery pack to quickly return to room temperature, facilitating a second temperature detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention;

[0030] Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle;

[0031] Figure 4 It is a structural schematic diagram of the partition of the present invention;

[0032] Figure 5 It is a schematic cross-sectional view of the structure of the protective cover of the present invention;

[0033] Figure 6 It is a front view of the overall structure section of the present invention;

[0034] Figure 7 This is a schematic diagram of the structure of the storage plate of the present invention;

[0035] Figure 8 It is a schematic cross-sectional view of the structure of the storage plate of the present invention;

[0036] Fig. 9 For the present invention Figure 8 A magnified schematic diagram of the structure at B in the middle;

[0037] Fig.10 It is a schematic cross-sectional view of the structure of the air supply cavity of the present invention;

[0038] Fig.11 It is a structural schematic diagram of the guide plate of the present invention.

[0039] In the figure: 1. detection device body; 2. protective door; 3. storage plate; 4. moving block; 5. first threaded rod; 6. first motor; 7. limiting back plate; 8. fixed plate; 9. rotating block; 10. second threaded rod; 11. partition; 12. third threaded rod; 13. second motor; 14. protective cover; 15. first connecting plate; 16. second connecting plate; 17. connecting box; 18. connecting line; 19. detector; 20. air supply chamber; 21. temperature control element; 22. first exhaust fan; 23. guide plate; 24. rotating shaft; 25. gear; 26. rack plate; 27. coil spring; 28. baffle; 29. ​​spring; 30. wire board; 31. slot; 32. connecting block; 33. connecting rod; 34. limiting plate; 35. tension spring; 36. limiting slot; 37. second exhaust fan; 38. detection chamber. DETAILED DESCRIPTION

[0040] 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.

[0041] like Figures 1 to 11 As shown, in an embodiment of the present invention, a battery pack performance detection device includes a detection device body 1, a side wall of the detection device body 1 is hinged with a protective door 2, a storage plate 3 is installed inside the detection device body 1 through a moving component, both sides of the storage plate 3 are provided with detection components, a limit back plate 7 is fixedly installed on the top of the storage plate 3, two wire racks 30 are arranged on the top of the limit back plate 7, a card slot 31 is opened inside one end of the two wire racks 30, and the tops of the two wire racks 30 are fixedly connected with a connecting block 32;

[0042] The detection assembly includes a detection chamber 38 and an air supply chamber 20 opened inside the detection device body 1, a temperature control element 21 is installed inside the air supply chamber 20, a sealing assembly is arranged between the detection chamber 38 and the detection device body 1, a connection box 17 is installed on the top of the detection chamber 38, a connection line 18 is connected to the top of the connection box 17, the connection line 18 passes through the inside of the detection device body 1 and extends to the top of the detection device body 1 and is installed on the side wall of the detector 19, and the detector 19 is arranged on the top of the detection device body 1;

[0043] The moving assembly includes a moving block 4 fixedly mounted on the bottom end of the storage plate 3 , the inner thread of the moving block 4 is connected with a first threaded rod 5 , and a first motor 6 is mounted on one end of the first threaded rod 5 .

[0044] The sealing assembly includes a partition 11 slidably mounted inside the detection device body 1, and two partitions 11 are symmetrically arranged. The top ends of the two partitions 11 are both mounted on the outer wall of the third threaded rod 12, and one end of the third threaded rod 12 is connected to the second motor 13. One side of the two partitions 11 is fixedly mounted with a second connecting plate 16, and one side of the two second connecting plates 16 is provided with a first connecting plate 15. One end of the two first connecting plates 15 is fixedly mounted with a protective cover 14, and the protective cover 14 is arranged below the connecting box 17. The protective cover 14 is slidably mounted inside the limit groove 36, and the limit groove 36 is opened inside the detection device body 1.

[0045] Temperature sensors are installed inside the two detection chambers 38 to detect the internal temperature of the detection chamber 38 in real time;

[0046] The hot end of the temperature control element 21 faces the detection cavity 38 on the left, and the cold end faces the detection cavity 38 on the right, so that the detection cavity 38 on the left is heated and the detection cavity 38 on the right is cooled, thereby performing detection in different temperature environments;

[0047] By cooperating and setting the detection component, the moving component and the sealing component, when testing the performance of the battery pack, firstly place the battery pack to be tested on the top of the storage plate 3, then clamp the connecting wire 18 of the battery pack in the clamping groove 31, and place the connecting head on the top of the wiring board 30;

[0048] After the battery pack is installed, the third threaded rod 12 is driven to rotate by the second motor 13, and the rotation of the third threaded rod 12 drives the two partitions 11 to move outward to open the detection chamber 38, and then the first threaded rod 5 is driven to rotate by the first motor 6, and the rotation of the first threaded rod 5 drives the movement of the moving block 4, and the movement of the moving block 4 drives the storage plate 3 carrying the battery pack to move into the detection chamber 38, and then the two partitions 11 are moved inward to reset so that the detection chamber 38 is sealed with the detection device body 1, and after the battery pack moves to the bottom of the connecting box 17, the connector is engaged and connected with the connecting box 17, and finally the temperature in the detection chamber 38 is changed by the temperature control element 21 to simulate different temperature environments and test the battery pack performance.

[0049] The bottom end of the protective cover 14 is provided with a slot 31 engaged with the connecting block 32, and the two are magnetically connected. When the connecting block 32 moves to the bottom of the slot 31, the connecting block 32 is magnetically engaged, thereby driving the wiring board 30 to move upward, and the auxiliary connecting line 18 is installed at the bottom end of the connecting box 17;

[0050] The connection blocks 32 at the top of the two limiting back plates 7 are staggered, and the two card slots 31 at the bottom of the protective cover 14 are also staggered;

[0051] When the limiting back plate 7 moves, since the limiting back plate 7 moves from the middle to the left first, the limiting back plate 7 on the left first moves to the bottom of the slot 31 on the right side of the protective cover 14. The staggered setting can prevent the connecting block 32 at the top of the left limiting back plate 7 from connecting with the slot 31 at the bottom right side of the protective cover 14, so as to ensure the stability of the connection between the connecting block 32 and the slot 31.

[0052] Before the battery pack is tested, the temperature inside the testing cavity 38 can be preheated by the temperature control element 21 .

[0053] Two threads are arranged on the outer wall of the third threaded rod 12 , and the two threads are arranged in opposite directions, so as to enable the two partitions 11 to move relative to each other.

[0054] The first connecting plate 15 and the second connecting plate 16 are magnetically connected. When the partition 11 moves and opens, the movement of the partition 11 drives the movement of the second connecting plate 16. The second connecting plate 16 absorbs the movement of the first connecting plate 15. The movement of the first connecting plate 15 drives the protective cover 14 to move, so that the protective cover 14 unfolds and exposes the connection box 17, and the moving distance of the protective cover 14 is limited by the limiting groove 36. At this time, the second connecting plate 16 and the first connecting plate 15 are separated from the magnetic state, so that the partition 11 and the second connecting plate 16 continue to move and unfold;

[0055] When the partition 11 moves to close, similarly, the second connecting plate 16 and the first connecting plate 15 are magnetically attracted, and the partition 11 drives the protective cover 14 to move and close, thereby protecting the connection box 17 .

[0056] like Figure 8 and Fig. 9 As shown, the bottom end of the wiring board 30 is fixedly connected with a connecting rod 33, the bottom end of the connecting rod 33 is fixedly installed with a limiting plate 34, the limiting plate 34 is slidably installed inside the limiting back plate 7, and a tension spring 35 is arranged between the limiting plate 34 and the limiting back plate 7.

[0057] The suction force between the connecting block 32 and the slot 31 is greater than the elastic force of the tension spring 35;

[0058] The connecting block 32 is arranged in a truncated cone shape;

[0059] When the connecting block 32 is connected to the card slot 31 by suction, the wiring board 30 moves upward, and the movement of the wiring board 30 drives the connecting rod 33 and the limiting plate 34 to slide inside the limiting back plate 7, and causes the tension spring 35 to deform and store elastic potential energy;

[0060] When the test is completed and the partition 11 is opened, similarly, the protective cover 14 moves inwardly, forcing the connecting block 32 to be pressed downward and thus disengaged therefrom.

[0061] like Figure 7 and Figure 8 As shown, baffles 28 are provided on both sides of the moving block 4 .

[0062] The movement of the moving block 4 drives the movement of the baffle 28. When the moving block 4 moves from the middle of the detection device body 1 to the detection chamber 38, the baffle 28 seals the position below the partition 11, and cooperates with the sealing assembly to make the detection chamber 38 in a sealed state during detection, effectively isolating the temperature changes in the external environment, so as to ensure that the battery pack is in a stable temperature environment during the test.

[0063] like Figure 8 As shown, the baffle plate 28 is slidably installed inside the moving block 4 , and a spring 29 is provided between the baffle plate 28 and the moving block 4 .

[0064] The elastic potential energy of the spring 29 enables the baffle 28 to slide inside the moving block 4, thereby reducing the space required for the baffle 28 to move into the detection cavity 38;

[0065] When the moving block 4 is located between the two detection chambers 38, the elasticity of the spring 29 causes the baffle 28 to move outward to the maximum distance and to be located just below the partition 11, so that the detection chambers 38 on both sides are in a sealed state.

[0066] like Figure 8 As shown, a fixed plate 8 is slidably installed on the top of the storage plate 3, and the internal thread of the fixed plate 8 is connected to a second threaded rod 10, which is rotatably installed inside the storage plate 3. One end of the second threaded rod 10 is fixedly connected to a rotating block 9, and the rotating block 9 is arranged on one side of the storage plate 3.

[0067] Before testing the performance of the battery pack, the second threaded rod 10 is driven to rotate by rotating the rotating block 9. The rotation of the second threaded rod 10 drives the fixing plate 8 to move toward the side close to the limiting back plate 7, thereby fixing the battery pack to be tested, so as to ensure the stability of the storage plate 3 during the movement of the battery pack.

[0068] like Fig.10 As shown, a first row of fans 22 are installed inside the air supply chamber 20 .

[0069] The inner wall of the partition 11 between the air supply cavity 20 and the detection cavity 38 is evenly provided with ventilation holes;

[0070] When the battery pack moves into the detection chamber 38 and changes the temperature in the detection chamber 38 through the temperature control element 21, the first exhaust fan 22 can be started to allow the gas inside the detection chamber 38 to enter the air supply chamber 20 through the ventilation holes, and then flow inside the air supply chamber 20 and be evenly discharged from the ventilation holes, thereby improving the heating efficiency in the detection chamber 38 and thus improving the detection efficiency.

[0071] like Fig.10 As shown, guide plates 23 are arranged inside the air supply cavity 20, and the guide plates 23 are evenly distributed.

[0072] The guide plate 23 is arranged at an angle. When the gas flows inside the air supply chamber 20, the guide plate 23 has a certain blocking and guiding effect on it, so that it can flow to a farther place, thereby improving the uniformity of gas flow and avoiding local overheating or overcooling.

[0073] like Fig.10 and Fig.11 As shown, each guide plate 23 is rotatably installed inside the air supply chamber 20 through a rotating shaft 24, wherein a coil spring 27 is installed on the outer wall of one of the rotating shafts 24, and a gear 25 is fixedly installed at the bottom end of each rotating shaft 24, and a rack plate 26 is meshedly connected to one side of the gear 25.

[0074] There are two guide plates 23 at the rear end to increase the contact area with the gas;

[0075] When the gas flows to the rear end and contacts the guide plate 23, the guide plate 23 is pushed to rotate. The rotation of the guide plate 23 drives the rotation of the rotating shaft 24. The rotation of the rotating shaft 24 drives the rotation of the gear 25. The rotation of the gear 25 drives the rack plate 26 to move, so that multiple guide plates 23 rotate at the same time, making the gas flow more uniform.

[0076] The coil spring 27 is installed between the rotating shaft 24 and the inner wall of the detection device body 1. When the rotating shaft 24 rotates, the coil spring 27 is deformed by force and releases its elastic potential energy to rotate and reset the rotating shaft 24.

[0077] like Figure 1 , Figure 2 and Figure 6 As shown, a second exhaust fan 37 is provided above the storage plate 3 , and the second exhaust fan 37 is installed on the top of the detection device body 1 .

[0078] After the battery pack undergoes another temperature test, it is moved back to the chamber between the two test chambers 38, and the second exhaust fan 37 is used to quickly restore the battery pack to room temperature, which is not only convenient for the second temperature test, but also convenient for restoring normal temperature after the test is completed.

[0079] A method for using a battery pack performance detection device comprises the following steps:

[0080] S1: When testing the performance of the battery pack, first open the protective door 2, then place the battery pack to be tested on the top of the storage plate 3 and between the limit back plate 7 and the fixed plate 8, rotate the rotating block 9 to drive the second threaded rod 10 to rotate, and the rotation of the second threaded rod 10 drives the fixed plate 8 to rotate, so that the fixed plate 8 cooperates with the limit back plate 7 to fix the battery pack, and then clamp the connecting wire 18 of the battery pack in the clamping groove 31, and place the connector on the top of the wire rack 30;

[0081] S2: Then the third threaded rod 12 is driven to rotate by the second motor 13. The rotation of the third threaded rod 12 drives the two partitions 11 to move outward to open the detection chamber 38. When the partition 11 moves, it drives the second connecting plate 16 to move. The movement of the second connecting plate 16 drives the movement of the first connecting plate 15. The movement of the first connecting plate 15 drives the movement of the protective cover 14, so that the two protective covers 14 move outward to expose the connection box 17.

[0082] S3: The first motor 6 is used to drive the first threaded rod 5 to rotate, and the rotation of the first threaded rod 5 drives the movement of the moving block 4. The movement of the moving block 4 drives the storage plate 3 carrying the battery pack to move into the detection chamber 38. When the storage plate 3 moves, the limiting back plate 7 is driven to move. The movement of the limiting back plate 7 drives the movement of the wire rack 30. The movement of the wire rack 30 drives the movement of the connecting block 32. When the connecting block 32 moves to the slot 31 below the protective cover 14, the two are magnetically connected and engaged, prompting the wire rack 30 to move upward for a distance, so that the connecting wire 18 of the battery pack is engaged with the inside of the connecting box 17, and the partition 11 is driven to close by the third threaded rod 12, so that the detection chamber 38 is in a sealed state.

[0083] S4: Then, the temperature inside the detection chamber 38 is controlled by the temperature control element 21, and the first exhaust fan 22 is started to promote the flow of gas inside the air supply chamber 20 and the detection chamber 38 to accelerate the temperature rise. When the gas flows to the tail end of the air supply chamber 20, the guide plate 23 at the tail end is caused to rotate. The rotation of the guide plate 23 drives the rotation of the rotating shaft 24. The rotation of the rotating shaft 24 drives the rotation of the gear 25. The rotation of the gear 25 drives the movement of the rack plate 26. Through the connection of the rack plate 26, all the guide plates 23 inside the air supply chamber 20 are caused to rotate, so that the air circulates evenly.

[0084] S5: Finally, the performance of the battery pack at different temperatures is tested by the detector 19. After the test, the partition 11 is opened again, the storage plate 3 is moved back between the two detection chambers 38, and the temperature is restored by the second exhaust fan 37. After resetting, it is moved to the detection chamber 38 on the right side for low-temperature detection.

[0085] 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 battery pack performance detection device, comprising a detection device body (1), characterized in that: The side wall of the detection device body (1) is hinged with a protective door (2), the interior of the detection device body (1) is installed with a storage plate (3) through a moving component, both sides of the storage plate (3) are provided with detection components, the top of the storage plate (3) is fixedly installed with a limit back plate (7), the top of the limit back plate (7) is provided with two wiring boards (30), one end of the two wiring boards (30) is provided with a card slot (31), and the tops of the two wiring boards (30) are fixedly connected with a connecting block (32); The detection component comprises a detection chamber (38) and an air supply chamber (20) which are opened inside the detection device body (1); a temperature control element (21) is installed inside the air supply chamber (20); a sealing component is arranged between the detection chamber (38) and the detection device body (1); a connection box (17) is installed at the top of the detection chamber (38); a connection line (18) is connected to the top of the connection box (17); the connection line (18) passes through the inside of the detection device body (1) and extends to the top of the detection device body (1) and is installed on the side wall of a detector (19); the detector (19) is arranged at the top of the detection device body (1); The moving assembly comprises a moving block (4) fixedly mounted on the bottom end of the storage plate (3); the inner thread of the moving block (4) is connected to a first threaded rod (5); and a first motor (6) is mounted on one end of the first threaded rod (5); The sealing assembly comprises a partition (11) slidably mounted inside the detection device body (1), two partitions (11) are symmetrically arranged, the top ends of the two partitions (11) are both mounted on the outer wall of the third threaded rod (12), one end of the third threaded rod (12) is connected to the second motor (13), one side of the two partitions (11) is fixedly mounted with a second connecting plate (16), one side of the two second connecting plates (16) is provided with a first connecting plate (15), one end of the two first connecting plates (15) is fixedly mounted with a protective cover (14), the protective cover (14) is arranged below the connecting box (17), the protective cover (14) is slidably mounted inside a limiting groove (36), and the limiting groove (36) is opened inside the detection device body (1).

2. A battery pack performance detection device according to claim 1, characterized in that: The bottom end of the wiring board (30) is fixedly connected to a connecting rod (33), the bottom end of the connecting rod (33) is fixedly mounted with a limiting plate (34), the limiting plate (34) is slidably mounted inside the limiting back plate (7), and a tension spring (35) is provided between the limiting plate (34) and the limiting back plate (7).

3. A battery pack performance detection device according to claim 1, characterized in that: Baffles (28) are provided on both sides of the moving block (4).

4. A battery pack performance detection device according to claim 3, characterized in that: The baffle plate (28) is slidably mounted inside the moving block (4), and a spring (29) is provided between the baffle plate (28) and the moving block (4).

5. A battery pack performance detection device according to claim 1, characterized in that: A fixing plate (8) is slidably mounted on the top of the storage plate (3); a second threaded rod (10) is internally threadedly connected to the fixing plate (8); the second threaded rod (10) is rotatably mounted inside the storage plate (3); one end of the second threaded rod (10) is fixedly connected to a rotating block (9); and the rotating block (9) is arranged on one side of the storage plate (3).

6. A battery pack performance detection device according to claim 1, characterized in that: A first row of fans (22) are installed inside the air supply chamber (20).

7. A battery pack performance detection device according to claim 1, characterized in that: The air supply cavity (20) is provided with guide plates (23) inside, and the guide plates (23) are evenly distributed.

8. A battery pack performance detection device according to claim 7, characterized in that: Each of the guide plates (23) is rotatably mounted inside the air supply chamber (20) via a rotating shaft (24), a coil spring (27) is mounted on the outer wall of one of the rotating shafts (24), a gear (25) is fixedly mounted on the bottom end of each of the rotating shafts (24), and a rack plate (26) is meshedly connected to one side of the gear (25).

9. A battery pack performance detection device according to claim 1, characterized in that: A second exhaust fan (37) is provided above the storage plate (3), and the second exhaust fan (37) is installed on the top of the detection device body (1).

10. A method for using a battery pack performance detection device, the method being applicable to a battery pack performance detection device as claimed in claims 1 to 9, characterized in that: The following steps are involved: S1: When testing the performance of the battery pack, first open the protective door (2), then place the battery pack to be tested on the top of the storage plate (3) and between the limiting back plate (7) and the fixed plate (8), and drive the second threaded rod (10) to rotate by rotating the rotating block (9), and the rotation of the second threaded rod (10) drives the fixed plate (8) to rotate, so that the fixed plate (8) and the limiting back plate (7) cooperate to fix the battery pack, and then clamp the connecting wire (18) of the battery pack in the clamping groove (31), and place the connector on the top of the wire rack (30); S2: Then, the third threaded rod (12) is driven to rotate by the second motor (13). The rotation of the third threaded rod (12) drives the two partitions (11) to move outward to open the detection chamber (38). When the partition (11) moves, it drives the second connecting plate (16) to move. The movement of the second connecting plate (16) drives the movement of the first connecting plate (15). The movement of the first connecting plate (15) drives the movement of the protective cover (14), so that the two protective covers (14) move outward to expose the connection box (17). S3: The first motor (6) is then used to drive the first threaded rod (5) to rotate. The rotation of the first threaded rod (5) drives the moving block (4) to move. The movement of the moving block (4) drives the storage plate (3) carrying the battery pack to move into the detection chamber (38). When the storage plate (3) moves, it drives the limiting back plate (7) to move. The movement of the limiting back plate (7) drives the movement of the wiring board (30). The movement of the wiring board (30) drives the movement of the connecting block (32). When the connecting block (32) moves to the slot (31) below the protective cover (14), the two are magnetically connected and engaged, prompting the wiring board (30) to move upward for a distance, so that the connecting wire (18) of the battery pack is engaged with the inside of the connecting box (17). The partition (11) is driven to close by the third threaded rod (12), so that the inside of the detection chamber (38) is in a sealed state. S4: Then, the temperature inside the detection chamber (38) is controlled by the temperature control element (21), and the first exhaust fan (22) is started to promote the flow of gas inside the air supply chamber (20) and the detection chamber (38), thereby accelerating the temperature rise. When the gas flows to the rear end of the air supply chamber (20), the guide plate (23) at the rear end is caused to rotate. The rotation of the guide plate (23) drives the rotation of the rotating shaft (24). The rotation of the rotating shaft (24) drives the rotation of the gear (25). The rotation of the gear (25) drives the movement of the rack plate (26). Through the connection of the rack plate (26), all the guide plates (23) inside the air supply chamber (20) are caused to rotate, thereby promoting uniform air circulation. S5: Finally, the performance of the battery pack at different temperatures is tested by the detector (19). After the test, the partition (11) is opened again, the storage plate (3) is moved back between the two detection chambers (38), and the temperature is restored by the second exhaust fan (37). After resetting, it is moved to the right detection chamber (38) for low-temperature testing.

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