Dynamic collision impact test system for battery pack

Abstract

The utility model relates to the technical field of battery pack detection, and discloses a battery pack dynamic collision impact test system, which comprises a guide rail, a remote control trolley, a buffer device and a suspension device, the suspension device is positioned beside the guide rail and is used for fixing a battery pack, the remote control trolley is arranged on the guide rail and can move along the guide rail, and an adjusting bracket is arranged on the remote control trolley. The adjusting support is connected with a weight through the electromagnet, the electromagnet can attract the weight when the electromagnet is started, the weight is separated from the adjusting support and impacts the battery pack on the suspension device when the electromagnet is closed, and the buffering device is arranged on the guide rail and used for reducing the speed and stopping the remote control trolley. Compared with the prior art, the impact condition of the battery pack when the vehicle is impacted can be effectively simulated, and an operator is helped to confirm the real collision impact result of the battery pack.

Description

Technical Field

[0001] The utility model relates to the technical field of battery pack detection, in particular to a battery pack dynamic collision impact test system. Background Art

[0002] With the vigorous development of new energy vehicles, the quality requirements of battery packs are getting higher and higher, and the significance of battery pack collision detection is becoming more and more important.

[0003] The existing technology mainly uses computer software to simulate vehicle collision situations and then analyze the collision results. However, there are many uncertainties in real collision situations, and the computer analysis results are often quite different from the subsequent results. Since the safety of automotive battery packs is related to the life safety of drivers and passengers, how to provide impact tests that are closest to real collision situations to obtain better test results is a technical problem that needs to be solved urgently. Utility Model Content

[0004] In order to solve the above technical problems, the purpose of the utility model is to provide a battery pack dynamic collision impact test system, which can simulate real working conditions to complete the collision impact test of the battery pack, ensuring that the battery pack performance test results closest to the actual situation are obtained.

[0005] Based on this, the utility model provides a battery pack dynamic collision impact test system, which includes:

[0006] guide;

[0007] A remote control trolley is arranged on the guide rail and can move along the guide rail. The remote control trolley is provided with an adjustment bracket. A weight is connected to the adjustment bracket through an electromagnet. When the electromagnet is started, the weight is fixed to the adjustment bracket. When the electromagnet is turned off, the weight is separated from the adjustment bracket.

[0008] A buffer device, disposed on the guide rail to decelerate and stop the remote-controlled vehicle;

[0009] The suspension device is arranged beside the buffer device and is used to set the battery pack.

[0010] In some embodiments of the present application, the adjustment bracket includes a first adjustment rod and a second adjustment rod, the first adjustment rod is movably connected to the frame of the remote control car and can move in a vertical direction, the second adjustment rod is movably connected to the fixed rod on the first adjustment rod and can move in a horizontal direction, and the weight is provided at one end of the second adjustment rod away from the first adjustment rod.

[0011] In some embodiments of the present application, the weight is an iron ball.

[0012] In some embodiments of the present application, the remote-controlled car is provided with a motor, and the remote-controlled car can move along the guide rail driven by the motor.

[0013] In some embodiments of the present application, the remote-controlled car is provided with a brake pump, and the brake pump is used to decelerate the remote-controlled car.

[0014] In some embodiments of the present application, the remote control car is provided with a displacement sensor and a controller, the controller is electrically connected to the electromagnet, the motor, the brake pump and the displacement sensor, and a first induction element and a second induction element are sequentially arranged on the guide rail. When the displacement sensor passes through the first induction element, the displacement sensor sends a signal to the controller to turn off the electromagnet, and when the displacement sensor passes through the second induction element, the displacement sensor sends a signal to the controller to start the brake pump.

[0015] In some embodiments of the present application, a power supply device is included, which includes a plurality of electric poles arranged in sequence along a guide rail and power supply cables erected on the electric poles. The remote-controlled vehicle is provided with a collector pole, and the power supply cable is connected to the collector pole to supply power to the remote-controlled vehicle. The collector pole is electrically connected to the electromagnet, the motor, the brake pump, the displacement sensor and the controller.

[0016] In some embodiments of the present application, a plurality of buffer cylinders are provided on a side of the buffer device facing the remote-controlled vehicle, and the buffer device is pressed against the remote-controlled vehicle through the buffer cylinders.

[0017] In some embodiments of the present application, four buffer cylinders are provided.

[0018] In some embodiments of the present application, the suspension device is provided with a plurality of hooks, and the battery pack is fixed to the suspension device via the hooks.

[0019] The embodiment of the utility model provides a battery pack dynamic collision impact test system, which has the following beneficial effects compared with the prior art:

[0020] An embodiment of the utility model provides a battery pack dynamic collision impact test system, which includes structures such as a guide rail, a remote-controlled car, a buffer device and a suspension device. A battery pack is fixed on the suspension device, the guide rail is arranged on the side of the suspension device, the remote-controlled car is arranged on the guide rail and can move along the guide rail, the remote-controlled car is provided with an adjustment bracket, and the end of the adjustment bracket away from the remote-controlled car is connected to a weight through an electromagnet. The remote-controlled car has a controller electrically connected to the electromagnet. When the electromagnet is started, the electromagnet can attract the weight to achieve an effective connection between the weight and the adjustment bracket. When the electromagnet is turned off, the weight is no longer attracted by the electromagnet. At this time, the weight can break away from the adjustment bracket and hit the battery pack on the suspension device; further, a buffer device is also provided on the guide rail to stop the remote-controlled car. Based on the above structure, the battery pack is fixed on the suspension device before use and a heavy object is installed on the remote control car. At this time, the heavy object is away from the battery pack. Then the remote control car is started to move along the guide rail and continuously approach the buffer device. The heavy object also continuously approaches the battery pack with the movement of the remote control car. The moving remote control car slows down and brakes by abutting against the buffer device. When the remote control car slows down, the electromagnet is turned off. At this time, the heavy object is no longer attracted by the electromagnet. Based on the inertia of the remote control car during movement, the heavy object leaves the adjustment bracket and hits the battery pack, thereby effectively simulating the impact of the battery pack when the vehicle is hit, and helping the operator to confirm the actual collision impact result of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A side view of a battery pack dynamic collision impact test system according to some embodiments of the present invention;

[0022] Figure 2 A top view of a battery pack dynamic collision impact test system according to some embodiments of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of a remote control car in some embodiments of the utility model;

[0024] Figure 4 It is a schematic diagram of the structure of the buffer device of some embodiments of the utility model.

[0025] In the figure, 1. guide rail; 2. remote control car; 21. adjustment bracket; 211. first adjustment rod; 212. second adjustment rod; 22. electromagnet; 23. weight; 24. motor; 25. brake pump; 26. displacement sensor; 27. controller; 28. collector rod; 3. buffer device; 31. buffer cylinder; 4. suspension device; 5. battery pack; 6. electric pole; 7. power supply cable; 8. first induction element; 9. second induction element. DETAILED DESCRIPTION

[0026] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] It should be understood that the terms "front", "rear", etc. are used in the present invention to describe various information, but such information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, "front" information may also be referred to as "rear" information, and "rear" information may also be referred to as "front" information without departing from the scope of the present invention.

[0028] like Figures 1 to 4 As shown, an embodiment of the utility model provides a battery pack dynamic collision impact test system, which includes structures such as a guide rail 1, a remote-controlled car 2, a buffer device 3 and a suspension device 4. Specifically, a battery pack 5 is fixed on the suspension device 4, the guide rail 1 is arranged beside the suspension device 4, the remote-controlled car 2 is arranged on the guide rail 1 and can move along the guide rail 1, the remote-controlled car 2 is provided with an adjustment bracket 21, and the end of the adjustment bracket 21 away from the remote-controlled car 2 is connected to a weight 23 through an electromagnet 22, and the remote-controlled car 2 has a controller 27 electrically connected to the electromagnet 22. When the electromagnet 22 is started, the electromagnet 22 can attract the weight 23 to achieve an effective connection between the weight 23 and the adjustment bracket 21. When the electromagnet 22 is turned off, the weight 23 is no longer attracted by the electromagnet 22. At this time, the weight 23 can break away from the adjustment bracket 21 and hit the battery pack 5 on the suspension device 4; further, a buffer device 3 is also provided on the guide rail 1 to slow down and stop the remote-controlled car 2.

[0029] Based on the above structure, before use, the battery pack 5 is installed on the suspension device 4, and the angle and height of the battery pack 5 are adjusted to meet the test requirements. Then, the remote control car 2 is assembled on the guide rail 1 and pushed to the starting point. Then, the weight 23 is assembled on the remote control car 2. At this time, the weight 23 is fixed on the adjustment bracket 21 under the action of the magnet and is away from the battery pack 5. After the assembly of the weight 23 is completed, the remote control car 2 is started to accelerate along the guide rail 1 and continuously approach the buffer device 3. The weight 23 also continuously approaches the battery pack 5 with the movement of the remote control car 2. When the remote control car 2 abuts against the buffer device 3, it can slow down and brake under the action of the buffer device 3. The time required for the remote control car 2 to abut against the buffer device 3 is calculated and the electromagnet 22 is turned off before the remote control car 2 abuts against the buffer device 3. As the electromagnet 22 is turned off, the heavy object 23 is no longer attracted by the electromagnet 22. At this time, the heavy object 23 leaves the adjustment bracket 21 based on the movement inertia of the remote control car 2 and hits the battery pack 5, thereby effectively simulating the impact of the battery pack 5 when the vehicle is hit, and helping the operator to confirm the actual collision impact result of the battery pack 5.

[0030] Furthermore, for the adjustment bracket 21 of the present application, it includes a first adjustment rod 211 arranged vertically and a second adjustment rod 212 arranged horizontally. The surface of the first adjustment rod 211 is provided with a rack, and the frame of the remote control car 2 is provided with a first limiting tooth matching the rack. When in use, the operator loosens the first limiting tooth. At this time, the first adjustment rod 211 can move in the vertical direction in the frame to adjust the height of the weight 23 and thereby change the position where the weight 23 hits the battery pack 5 when thrown out. After the adjustment is completed, the first limiting tooth is tensioned, and the first limiting tooth can engage with the rack of the first adjustment rod 211 to fix the first adjustment Section rod; Similar to the setting of the first adjusting rod 211, the top of the first adjusting rod 211 is fixedly connected with a fixed rod, and a horizontally arranged second adjusting rod is provided on the fixed rod. The second adjusting rod is also provided with a rack, and a second limiting tooth matching the rack is also provided on the fixed rod. The second limiting tooth is loosened before use. The second adjusting rod 212 can move horizontally in the fixed rod to adjust the distance between the weight 23 and the frame and thereby change the position of the weight 23 hitting the battery pack 5 when it is thrown out. After the adjustment is completed, the second limiting tooth is tightened, and the second limiting tooth can engage with the rack of the second adjusting rod 212 to fix the second adjusting rod.

[0031] Specifically in the embodiment of the present invention, the weight 23 is preferably an iron ball.

[0032] Furthermore, for the remote-controlled car 2 of the present application, it is provided with a motor 24 and a brake pump 25. The remote-controlled car 2 can move along the guide rail 1 driven by the motor 24, and the brake pump 25 can decelerate the remote-controlled car 2 before the remote-controlled car 2 hits the buffer device 3 to cooperate with the buffer device 3 to stop the remote-controlled car 2. The brake pump 25 can decelerate the remote-controlled car 2 before the remote-controlled car 2 hits the buffer device 3 to reduce its impact force on the buffer device 3, thereby reducing the impact on the remote-controlled car 2, which is beneficial to improving the service life of the remote-controlled car 2.

[0033] Furthermore, in some embodiments of the present application, the remote control car is further provided with a displacement sensor 26 and a controller 27, the controller 27 is electrically connected to the electromagnet 22, the motor 24, the brake pump 25 and the displacement sensor 26, and the guide rail 1 is provided with a first induction member 8 and a second induction member 9 corresponding to the displacement sensor 26 in sequence. Based on the above structure, when the displacement sensor 26 passes through the first induction member 8, the displacement sensor 26 sends a signal to the controller 27 to turn off the electromagnet 22, and at this time, the weight 23 can be separated from the adjustment bracket 21 as the electromagnet is turned off. As the remote control car 2 continues to move forward, when the displacement sensor 26 passes through the second induction member 9, the displacement sensor 26 sends a signal to the controller 27 to start the brake pump 25 to slow down the remote control car 2.

[0034] It can be found that the positions of the first sensing element 8 and the second sensing element 9 are relatively fixed and the distance between them is relatively short, and the time interval of the remote control car 2 passing through the first sensing element 8 and the second sensing element 9 can be obtained by the signal time sent by the displacement sensor 26 to the controller 27, and the average speed of the remote control car 2 in this section of the journey can be calculated in combination with the distance between the first sensing element 8 and the second sensing element 9; and because the distance between the first sensing element 8 and the second sensing element 9 is relatively short, the electromagnet 22 is closed when the brake pump 25 is started, and the weight 23 is separated from the adjustment bracket 21 due to inertia and hits the battery pack 5 from the position of the second sensing element 9. At this time, the motion trajectory of the weight 23 approaches a straight line. After repeated measurements and calculations, it can be considered that the average speed of the remote control car 2 between the first sensing element 8 and the second sensing element 8 is equal to the speed at which the weight 23 hits the battery pack 5, thereby obtaining the flight speed of the weight 23.

[0035] Optionally, in some embodiments of the present application, the battery pack dynamic collision impact test system also includes a power supply device, which includes a plurality of electric poles 6 arranged in sequence along the guide rail 1 and a power supply cable 7 set on the electric poles 6. The remote control car 2 is provided with a collector pole 28, and the power supply cable 7 is connected to the collector pole 28 to supply power to the remote control car 2. The collector pole 28 is electrically connected to the electromagnet 22, the motor 24, the brake pump 25, and the displacement sensor 26. Based on the above structure, the present application supplies power to the remote control car through the electric pole 6 and the power supply cable 7, and the power supply effect is more stable; at the same time, it can be found that if a battery is set on the remote control car 2 to power various components, then when the remote control car 2 hits the buffer device 3 to decelerate, it will inevitably hit the battery on the remote control car 2. Repeated collisions may cause the battery to be unable to supply power normally, affecting the test efficiency. Therefore, the present application chooses to use the electric pole 6 and the power supply cable 7 to realize power supply, which ensures the normal driving of the remote control car 2 on the guide rail 1, which is conducive to the multiple use of the remote control car 2.

[0036] In addition, the buffer device 3 of the present application is provided with a plurality of buffer cylinders 31 on the side facing the remote control car 2, and the buffer device 3 abuts against the remote control car 2 through the buffer cylinders 31. Specifically in the embodiment of the present utility model, four buffer cylinders 31 are provided.

[0037] Furthermore, the suspension device 4 of the present application has a plurality of hooks (not shown), and the operator fixes the battery pack 5 through different hooks to make it present different states such as horizontal, vertical, inclined, etc., and then cooperates with the remote control car 2 to complete the collision test of the battery pack 5 under different working conditions.

[0038] In summary, the utility model provides a battery pack dynamic collision impact test system, which includes a guide rail 1, a remote-controlled car 2, a buffer device 3 and a suspension device 4, a battery pack 5 is fixed on the suspension device 4, the guide rail 1 is arranged beside the suspension device 4, the remote-controlled car 2 is arranged on the guide rail 1 and can move along the guide rail 1, the remote-controlled car 2 is provided with an adjustment bracket 21, and the end of the adjustment bracket 21 away from the remote-controlled car 2 is connected to a weight 23 through an electromagnet 22, the remote-controlled car 2 has a controller 27 electrically connected to the electromagnet 22, when the electromagnet 22 is started, the electromagnet 22 can attract the weight 23 to achieve an effective connection between the weight 23 and the adjustment bracket 21, when the electromagnet 22 is turned off, the weight 23 is no longer attracted by the electromagnet 22, at this time the weight 23 can break away from the adjustment bracket 21 and hit the battery pack 5 on the suspension device 4; further, a buffer device 3 is also provided on the guide rail 1 to stop the remote-controlled car 2. Compared with the prior art, the present application can effectively simulate the impact condition of the battery pack 5 when the vehicle is hit, and help the operator confirm the actual collision impact result of the battery pack 5.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A battery pack dynamic collision impact test system, characterized in that: include: Guide rail (1); A remote-controlled car (2) is arranged on the guide rail (1) and can move along the guide rail (1). An adjustment bracket (21) is arranged on the remote-controlled car (2). A weight (23) is connected to the adjustment bracket (21) via an electromagnet (22). When the electromagnet (22) is activated, the weight (23) is fixed to the adjustment bracket (21). When the electromagnet (22) is turned off, the weight (23) is separated from the adjustment bracket (21). A buffer device (3) is arranged on the guide rail (1) to decelerate and stop the remote-controlled vehicle (2); The suspension device (4) is arranged beside the buffer device (3) and is used to arrange the battery pack (5).

2. The battery pack dynamic collision impact test system according to claim 1, characterized in that: The adjustment bracket (21) comprises a first adjustment rod (211) and a second adjustment rod (212); the first adjustment rod (211) is movably connected to the frame of the remote-controlled vehicle (2) and can move in a vertical direction; the second adjustment rod (212) is movably connected to a fixed rod on the first adjustment rod (211) and can move in a horizontal direction; the weight (23) is provided at one end of the second adjustment rod (212) away from the first adjustment rod (211).

3. The battery pack dynamic collision impact test system according to claim 1 or 2, characterized in that: The weight (23) is an iron ball.

4. The battery pack dynamic collision impact test system according to claim 1, characterized in that: The remote-controlled car (2) is provided with a motor (24), and the remote-controlled car can move along the guide rail (1) under the drive of the motor (24).

5. The battery pack dynamic collision impact test system according to claim 4, characterized in that: The remote-controlled car (2) is provided with a brake pump (25), and the brake pump (25) is used to decelerate the remote-controlled car (2).

6. The battery pack dynamic collision impact test system according to claim 5, characterized in that: The remote control car (2) is provided with a displacement sensor (26) and a controller (27). The controller (27) is electrically connected to the electromagnet (22), the motor (24), the brake pump (25) and the displacement sensor (26). The guide rail (1) is provided with a first induction element (8) and a second induction element (9) in sequence. When the displacement sensor (26) passes the first induction element (8), the displacement sensor (26) sends a signal to the controller (27) to turn off the electromagnet (22). When the displacement sensor (26) passes the second induction element (9), the displacement sensor (26) sends a signal to the controller (27) to start the brake pump (25).

7. The battery pack dynamic collision impact test system according to claim 6, characterized in that: The invention comprises a power supply device, wherein the power supply device comprises a plurality of electric poles (6) arranged in sequence along a guide rail (1) and power supply cables (7) arranged on the electric poles (6); the remote-controlled vehicle (2) is provided with a power collecting pole (28); the power supply cable (7) is connected to the power collecting pole (28) to supply power to the remote-controlled vehicle (2); the power collecting pole (28) is electrically connected to the electromagnet (22), the motor (24), the brake pump (25), the displacement sensor (26) and the controller (27).

8. The battery pack dynamic collision impact test system according to claim 1, characterized in that: A plurality of buffer cylinders (31) are provided on the side of the buffer device (3) facing the remote-controlled vehicle (2), and the buffer device (3) abuts against the remote-controlled vehicle (2) via the buffer cylinders (31).

9. The battery pack dynamic collision impact test system according to claim 8, characterized in that: The buffer oil cylinders (31) are provided with four.

10. The battery pack dynamic collision impact test system according to claim 1, characterized in that: The suspension device (4) is provided with a plurality of hooks, and the battery pack (5) is fixed to the suspension device (4) via the hooks.

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