A battery module testing device

Abstract

A battery module testing device belongs to the technical field of battery testing devices. A support plate has a clamping mechanism and a testing mechanism that are configured to cooperate. The testing mechanism is either an impact mechanism or a puncture mechanism. The impact mechanism has an impact block and a drive motor connected to a driving bevel gear on its movable support. The lower end of the motor is connected to a rotating shaft, and the two ends of the rotating shaft have moving wheels that are connected to a driven bevel gear. The driving bevel gear meshes with the driven bevel gear. The puncture mechanism has a puncture pin on its sliding control frame, with both ends connected to a telescopic rod and the upper end connected to the movable support. The puncture pin is correspondingly arranged with the impact block, and the telescopic rod is connected to the movable support. This invention performs impact testing on the battery pack using an impact block connected to a high-speed moving support, or performs puncture testing on the battery pack using a puncture pin connected to a high-speed moving support, simultaneously solving the problems of impact testing and puncture testing of batteries. It has a simple structure, rich functions, and a wide range of applications.

Description

Technical Field

[0001] This invention relates to a battery module testing device, belonging to the technical field of battery testing devices. Background Technology

[0002] Lithium-ion batteries are increasingly widely used in consumer electronics, aerospace, energy storage and new energy vehicles due to their high energy density, high operating voltage, low self-discharge, high charging efficiency, long cycle life and no memory effect.

[0003] Testing the physical resistance of lithium batteries is a crucial step in the lithium-ion battery production process. To ensure the safety of lithium batteries, impact and puncture tests are required to assess their resistance to collisions during operation and protect drivers.

[0004] The Chinese invention patent, filed on December 14, 2021, with application number CN202123133563.2 and titled "A Simulation Device for Battery Impact in an Electric Equipment Testing Vehicle", discloses a single impact detection method that can only detect physical collisions. Summary of the Invention

[0005] To address the problems existing in the background art, the present invention provides a battery module testing device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a battery module testing device, comprising a support plate, a clamping mechanism, a moving mechanism, and a testing mechanism; one end of the support plate is connected to the clamping mechanism through the moving mechanism, and the other end of the support plate is provided with a testing mechanism, wherein the testing mechanism is configured in cooperation with the clamping mechanism.

[0007] Compared with the prior art, the beneficial effects of the present invention are:

[0008] This invention performs impact tests on battery packs by using an impact block connected to a high-speed moving support, or performs puncture tests on battery packs by using a puncture nail connected to a high-speed moving support. It solves both impact and puncture tests on batteries, has a simple structure, rich functions, and a wide range of applications. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of the present invention;

[0010] Figure 2 This is a schematic diagram showing the connection relationship between the support plate and the moving mechanism;

[0011] Figure 3 This is a schematic diagram of the clamping mechanism;

[0012] Figure 4 This is a schematic diagram of the testing mechanism;

[0013] Figure 5 yes Figure 4 A bottom view;

[0014] Figure 6 yes Figure 4 Rear view;

[0015] Figure 7 yes Figure 4 Side view;

[0016] Figure 8 This is a schematic diagram showing the connection between the support plate and the acceleration mechanism. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the invention, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] Example 1:

[0019] A battery module testing device includes a support plate 1, a clamping mechanism, a moving mechanism, and a testing mechanism; one end of the support plate 1 is connected to the clamping mechanism through the moving mechanism, and the other end of the support plate 1 is provided with a testing mechanism, which is configured to cooperate with the clamping mechanism.

[0020] The moving mechanism includes a ball screw nut 2, a ball screw 13, a drive motor 14, and a slide rod 15. A placement groove 5 is provided on the upper surface of one end of the support plate 1. The ball screw 13 and slide rod 15 are arranged side-by-side in the placement groove 5. Both ends of the ball screw 13 and slide rod 15 are rotatably connected to the sidewall of the placement groove 5 via bearings. One end of the ball screw 13 is driven to rotate by the drive motor 14, which is mounted on the support plate 1. One end of the ball screw nut 2 is threaded onto the outside of the ball screw 13, and the other end of the ball screw nut 2 is slidably fitted onto the outside of the slide rod 15. Specifically, a threaded hole 27 is provided on one side of the lower end of the ball screw nut 2, and a through hole 21 is provided on the other side. The threaded hole 27 is matched and screwed onto the ball screw 13, and the slide rod 15 is slidably inserted into the through hole 21.

[0021] The clamping mechanism includes a storage plate 23, a clamping electric actuator 24, and a clamping plate 25; the upper end of the ball screw nut 2 is provided with a storage plate 23, and the two side walls of the ball screw nut 2 are respectively fixedly connected to the fixed ends of the corresponding horizontally arranged clamping electric actuators 24, and the movable end of each clamping electric actuator 24 is respectively vertically fixedly connected to the corresponding clamping plate 25.

[0022] Multiple friction blocks 26 are provided on the opposite surfaces of the two clamping plates 25 to increase the friction during clamping and make the clamping more stable.

[0023] The ball screw nut 2 is equipped with a vertically arranged drive motor 22. The output shaft of the drive motor 22 extends to the upper end of the ball screw nut 2 and is fixedly connected to the middle of the storage plate 23. By controlling the drive motor 22, the connected storage plate 23 is rotated, so that the designated surface of the battery pack contacts the testing mechanism, ensuring that the device can test the designated position of the battery pack.

[0024] The drive motor 14 controls the ball screw 13 to rotate, driving the ball screw nut 2 to move and place the battery pack to be tested on the storage plate 23. The two clamping electric push rods 24 are driven to retract, driving the two clamping plates 25 to clamp the two ends of the battery pack respectively. Multiple friction blocks 26 are fixed to the opposite surfaces of the two clamping plates 25. The multiple friction blocks 26 increase the friction between the clamping plates 25 and the battery pack, thereby preventing the battery pack from sliding on the storage plate 23 when the testing mechanism is conducting the test.

[0025] The testing mechanism is an impact mechanism or a puncture mechanism.

[0026] The impact mechanism includes a movable support 3, a rotating shaft 31, a driven bevel gear 32, a moving wheel 33, impact blocks 34, and a driving bevel gear 39. The movable support 3 is equipped with a drive motor 3, the output shaft of which is coaxially and fixedly connected to the horizontally arranged driving bevel gear 39. The driving bevel gear 39 meshes with the vertically arranged driven bevel gear 32. The lower end of the movable support 3 is rotatably connected to two parallel rotating shafts 31 via a mounting bracket. Each rotating shaft 31 has a moving wheel 33 coaxially fixedly arranged at both ends, and one of the rotating shafts 31 is coaxially and fixedly connected to the driven bevel gear 32. Multiple impact blocks 34 are evenly distributed along the length of the end of the movable support 3 facing the clamping mechanism.

[0027] The drive motor drives the active bevel gear 39 to rotate, which in turn drives the driven bevel gear 32 to rotate, which in turn drives the rotating shaft 31 to rotate, thereby moving the movable bracket 3 and causing multiple impact blocks 34 connected to the movable bracket 3 to impact one end of the battery pack.

[0028] The upper surface of the support plate 1 is also provided with two parallel limiting grooves 11. The moving wheel 33 is set in the limiting groove 11. The two limiting grooves 11 limit the moving wheel 33 to prevent the rotating moving wheel 33 from sliding left and right on the upper surface of the support plate 1, which would cause the moving trajectory of the moving bracket 3 to change.

[0029] The puncture mechanism includes a sliding control frame 35, puncture nails 36, compression springs 37, telescopic rods 38, and a fixing unit. Multiple puncture nails 36 are evenly distributed along the length of the end of the sliding control frame 35 facing the clamping mechanism. Each puncture nail 36 corresponds to a multiple impact blocks 34, and each impact block 34 has a puncture hole for the puncture nail 36 to pass through. Both ends of the sliding control frame 35 are fixedly connected to the fixed ends of the corresponding telescopic rods 38. The movable end of each telescopic rod 38 is fixedly connected to a movable support 3, and a compression spring 37 is fitted onto the outer side of the movable end of each telescopic rod 38. One end of the compression spring 37 abuts against the movable support 3, and the other end abuts against the fixed end of the telescopic rod 38. The upper end of the sliding control frame 35 is connected to the movable support 3 via the fixing unit.

[0030] The sliding control frame 35 is moved, causing multiple piercing nails 36 to insert into the corresponding impact blocks 34, and the front end of the piercing nails 36 to pass through the impact blocks 34, thereby ensuring that the piercing nails 36 can be inserted into the battery pack. The sliding control frame 35 is fixed by the fixing unit to prevent the two compression springs 37 from pushing the sliding control frame 35 to move back to the initial position.

[0031] The fixed unit includes a lifting control frame 310, a push block 311, a positioning slider 312, a limiting frame 313, a limiting rotation frame 314, and a positioning frame 315. At least one push block 311 is evenly distributed along the length of the lifting control frame 310. The lower end of the push block 311 is a wedge-shaped surface, which is configured to cooperate with the upper end of the sliding control frame 35. Positioning sliders 312 are provided at both ends of the lifting control frame 310. The two positioning sliders 312 are slidably connected to the corresponding vertically arranged limiting frames 313 through sliding grooves. The middle part of the lifting control frame 310 is hinged to one end of the limiting rotation frame 314. The other end of the limiting rotation frame 314 is hooked and detachably fixed to the inverted L-shaped positioning frame 315. The positioning frame 315 and the two limiting frames 313 are all fixed on the movable support 3.

[0032] The lifting control frame 310 is pressed down to drive the push block 311 to descend and push the sliding control frame 35 to move. Because the lower end of the push block 311 is provided with a wedge-shaped surface, the friction between the push block 311 and the sliding control frame 35 is reduced, making it easier to push the sliding control frame 35. In order to prevent the compression spring 37 from pushing the sliding control frame 35 to move in the opposite direction, thereby pushing the lifting control frame 310 to rise, causing the piercing nail 36 to move back to the initial position, the limiting rotating frame 314 is rotated so that one end of the limiting rotating frame 314 is connected to the top end of the positioning frame 315. The lower surface of the top end of the positioning frame 315 is provided with a groove. The top end of the limiting rotating frame 314 is rotated into the groove, thereby preventing the lifting control frame 310 from moving upward and fixing the connected piercing nail 36.

[0033] Example 2:

[0034] The difference between this embodiment and Embodiment 1 is that:

[0035] The testing device also includes an acceleration mechanism, which includes a sliding rod 4, a control disk 41, a tension spring 42, and an impact plate 43. An auxiliary plate 6 is vertically fixed to the side wall of the support plate 1. The auxiliary plate 6 is vertically slidably connected to the sliding rod 4. Specifically, the auxiliary plate 6 has a sliding hole 12 extending through its thickness direction. The sliding rod 4 is vertically slidably arranged in the sliding hole 12. The outer end of the sliding rod 4 is provided with a control disk 41, and the inner end of the sliding rod 4 is provided with an impact plate 43. The impact plate 43 is configured to cooperate with the testing mechanism. A tension spring 42 is fitted on the outer side of the sliding rod 4. One end of the tension spring 42 is connected to the control disk 41, and the other end of the tension spring 42 is connected to the auxiliary plate 6.

[0036] When it is necessary to accelerate the test mechanism to change the impact force of the test mechanism hitting the battery pack, the control disc 41 is pulled to move the sliding rod 4, causing the tension spring 42 sleeved on the sliding rod 4 to extend and generate a reverse force. When the control disc 41 is released, the tension spring 42 drives the sliding rod 4 to reset and cause the impact plate 43 to hit the test mechanism, thereby increasing the speed of the test mechanism and thus changing the impact force generated when the test mechanism comes into contact with the battery pack.

[0037] When using this invention, the battery pack to be tested is placed on the storage plate 23, and the storage plate 23 is rotated according to the test requirements to change the orientation of the battery pack. The active bevel gear 39 is driven to rotate, thereby driving the connected moving wheel 33 to rotate, which in turn drives the connected moving bracket 3 to move, so that the multiple impact blocks 34 on the moving bracket 3 can perform impact tests on the battery pack.

[0038] When a puncture test is required on the battery pack, the lowering lifting control frame 310 is pushed to move by the connected push block 311, thereby moving the multiple puncture nails 36 connected to the lifting control frame 310, so that the front ends of the multiple puncture nails 36 pass through the corresponding impact block 34, thereby ensuring that the front ends of the puncture nails 36 can contact the battery pack, thus completing the puncture test on the battery pack and determining the safety of the battery.

[0039] If it is necessary to accelerate the moving support 3, pull the control disc 41 to drive the connected sliding rod 4 to move, causing the tension spring 42 to extend and generate a reverse contraction force. The tension spring 42 drives the impact plate 43 to move, causing the impact plate 43 to collide with the moving support 3, thereby increasing the moving speed of the moving support 3 and thus changing the collision force of the moving support 3.

[0040] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A battery module testing device, characterized in that: It includes a support plate (1), a clamping mechanism, a moving mechanism, and a testing mechanism; the moving mechanism includes a ball screw nut (2), a ball screw (13), a drive motor (14), and a slide bar (15); one end of the support plate (1) is connected to the clamping mechanism through the moving mechanism, and the other end of the support plate (1) is provided with a testing mechanism, which is configured to cooperate with the clamping mechanism; the clamping mechanism includes a storage plate (23), a clamping electric push rod (24), and a clamping plate (25); the upper end of the ball screw nut (2) is provided with a storage plate (23), and the ball screw... The two side walls of the ball screw nut (2) are respectively fixedly connected to the fixed ends of the corresponding horizontally arranged clamping electric push rods (24), and the movable end of each clamping electric push rod (24) is respectively vertically fixedly connected to the corresponding clamping plate (25); the ball screw nut (2) is provided with a vertically arranged drive motor (22), and the output shaft of the drive motor (22) extends to the upper end of the ball screw nut (2) and is fixedly connected to the middle of the storage plate (23); the testing mechanism is an impact mechanism or a puncture mechanism; the impact mechanism includes a moving bracket (3) and a rotating shaft (31). The moving bracket (3) includes a driven bevel gear (32), a moving wheel (33), an impact block (34), and a driving bevel gear (39); the moving bracket (3) has multiple impact blocks (34) at one end facing the clamping mechanism; the piercing mechanism includes a sliding control frame (35), piercing nails (36), a compression spring (37), a telescopic rod (38), and a fixing unit; the sliding control frame (35) has multiple piercing nails (36) at one end facing the clamping mechanism, and the multiple piercing nails (36) are arranged one-to-one with the multiple impact blocks (34), and each impact block (34) is... A puncture hole is provided for the puncture nail (36) to pass through; the two ends of the sliding control frame (35) are respectively fixedly connected to the fixed ends of the corresponding telescopic rods (38), the movable end of each telescopic rod (38) is fixedly connected to the moving bracket (3), and a compression spring (37) is fitted on the outer side of the movable end of each telescopic rod (38). One end of the compression spring (37) abuts against the moving bracket (3), and the other end of the compression spring (37) abuts against the fixed end of the telescopic rod (38); the upper end of the sliding control frame (35) is connected to the moving bracket (3) through a fixing unit.

2. The battery module testing device according to claim 1, characterized in that: The upper surface of one end of the support plate (1) is provided with a placement groove (5). The placement groove (5) is provided with a ball screw (13) and a slide rod (15) arranged in parallel. Both ends of the ball screw (13) and the slide rod (15) are rotatably connected to the side wall of the placement groove (5). One end of the ball screw (13) is driven to rotate by a drive motor (14). The drive motor (14) is set on the support plate (1). One end of the ball nut (2) is threaded to the outside of the ball screw (13), and the other end of the ball nut (2) is slidably fitted on the outside of the slide rod (15).

3. The battery module testing device according to claim 2, characterized in that: Multiple friction blocks (26) are provided on opposite sides of the two clamping plates (25).

4. The battery module testing device according to claim 3, characterized in that: The movable support (3) is equipped with a drive motor three. The output shaft of the drive motor three is coaxially fixedly connected to the horizontally arranged active bevel gear (39). The active bevel gear (39) is meshed with the vertically arranged driven bevel gear (32). The lower end of the movable support (3) is rotatably connected to two parallel rotating shafts (31). Each rotating shaft (31) has a movable wheel (33) coaxially fixedly arranged at both ends. One of the rotating shafts (31) is coaxially fixedly connected to the driven bevel gear (32).

5. The battery module testing device according to claim 4, characterized in that: The fixed unit includes a lifting control frame (310), a push block (311), a positioning slider (312), a limit frame (313), a limit rotation frame (314), and a positioning frame (315). The lifting control frame (310) is provided with at least one push block (311), the lower end of which is a wedge-shaped surface, which is configured to cooperate with the upper end of the sliding control frame (35). Both ends of the lifting control frame (310) are provided with positioning sliders (312), and the two positioning sliders (312) are slidably connected to the corresponding vertically arranged limit frames (313). The middle part of the lifting control frame (310) is hinged to one end of the limit rotation frame (314), and the other end of the limit rotation frame (314) is detachably fixedly connected to the inverted L-shaped positioning frame (315). The positioning frame (315) and the two limit frames (313) are all fixed on the movable support (3).

6. A battery module testing device according to claim 1 or 5, characterized in that: The testing device also includes an acceleration mechanism, which includes a sliding rod (4), a control disk (41), a tension spring (42), and an impact plate (43). An auxiliary plate (6) is vertically fixed to the side wall of the support plate (1). The auxiliary plate (6) is vertically slidably connected to the sliding rod (4). The outer end of the sliding rod (4) is provided with a control disk (41), and the inner end of the sliding rod (4) is provided with an impact plate (43). The impact plate (43) is configured to cooperate with the testing mechanism. A tension spring (42) is fitted on the outer side of the sliding rod (4). One end of the tension spring (42) is connected to the control disk (41), and the other end of the tension spring (42) is connected to the auxiliary plate (6).

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