A new energy vehicle battery pack scratch detection device

Abstract

The application relates to the field of new energy automobile power batteries, in particular to a new energy automobile battery pack scratching detection device, which comprises a detection frame arranged in the vertical direction, a battery pack mounting frame is vertically arranged on one side below the detection frame, a lifting assembly and a falling frame are arranged above the detection frame, the lifting assembly is used for lifting the falling frame, and the falling frame is made to do free fall after being lifted to a predetermined height, and a replaceable detection head is arranged on the falling frame; the detection head on the falling frame is used for impacting or scratching the battery pack; during use, the height of the falling frame is lifted through the lifting assembly, the connection between the falling frame is released after being lifted to the predetermined height, so that the falling frame is made to do free fall, the speed during impact with the battery pack is changed by lifting different heights, compared with the prior art, the detection head is accelerated through gravity, the existing traction device is replaced, and the speed during impact with the battery pack is improved, so that the simulation detection is more real.

Description

Technical Field

[0001] This invention relates to the field of power batteries for new energy vehicles, and specifically to a device for detecting scratches on battery packs of new energy vehicles. Background Technology

[0002] New energy vehicles are automobiles that use unconventional vehicle fuels as their power source, including pure electric, hybrid, and fuel cell electric vehicles. Among these, the bottom of the power battery in pure electric vehicles is extremely vulnerable to impacts and scratches. Furthermore, damage to the bottom can be insidious; even in some accidents where no short circuit or fire occurs at the time, subsequent safety cannot be guaranteed. To further verify the battery safety status of pure electric vehicle power batteries after being scratched by external objects, it is necessary to develop a new energy vehicle power battery scratch testing device.

[0003] A scraping test device is available, which has a horizontally arranged traction device and scraping head. The battery pack is placed above the scraping head, and the scraping head is pulled by the traction device to simulate the scraping of the battery pack. This device replaces the whole vehicle-level battery pack scraping test and reduces the test cost of scraping test. However, the speed of the scraping needs to be adjusted during the test, and the existing device is difficult to simulate different impact speeds. Using complex structures or high-power equipment will significantly increase the test cost. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a new energy vehicle battery pack scratch detection device to solve the problem that existing devices are unable to simulate different impact speeds.

[0005] To achieve the above objectives, the present invention provides a new energy vehicle battery pack scratch detection device, including a detection frame arranged vertically, a battery pack mounting frame arranged vertically on one side below the detection frame, a lifting component and a dropping frame arranged above the detection frame, the lifting component being used to lift the dropping frame and, after being raised to a predetermined height, to allow the dropping frame to undergo free fall, and a replaceable detection head being provided on the dropping frame.

[0006] The principle of the technical solution: The battery pack mounting bracket is used to install and fix the battery pack. The detection head on the drop frame is used to impact or scrape the battery pack, simulating the collision effect during driving. The detection head is replaceable, and selecting detection heads of different shapes and sizes can improve the realism of the detection effect. In use, the height of the drop frame is raised by the lifting component. After reaching the predetermined height, the connection with the drop frame is released, allowing the drop frame to undergo free fall. By raising it to different heights, the descent distance of the battery pack is changed, thereby changing the speed at impact. Compared with the prior art, this invention accelerates the detection head by gravity, replacing the existing traction device. It changes the speed at impact according to different heights and can effectively increase the speed at which the impact head and the battery pack collide, making the simulated detection more realistic.

[0007] In a preferred embodiment of the present invention, the lifting assembly includes a lifting motor fixed above the detection frame, a first roller fixed on the output shaft of the lifting motor, a pull rope provided on the first roller, one end of the pull rope being wound around the first roller, and the other end being connected to the upper end of the drop frame.

[0008] Beneficial effects: The lifting motor is used to drive the first roller to rotate, thereby winding the pull rope and lifting the drop frame upward, achieving the effect of automatic height adjustment.

[0009] In a preferred embodiment of the present invention, a transverse track is provided on one side of the testing frame located on the battery pack mounting frame. A transverse seat that can slide horizontally is provided in the transverse track. Two support frames are provided on the transverse seat. Limit frames are provided on the two support frames. The limit frames are higher than the highest point of the testing frame and surround the outside of the pull rope.

[0010] Beneficial effects: The transverse track is used to install the transverse seat and restrict its movement direction. The support frame on the transverse seat is used to connect the limiting frame. The limiting frame is used to restrict the pull rope, so that when the transverse seat moves, it drives the pull rope to move, thereby allowing the drop frame to move accordingly, adjusting the position of the impact battery pack, and realizing the impact simulation at different positions.

[0011] In a preferred embodiment of the present invention, the transverse track is lower than the lowest point of the battery pack mounting frame, a traction motor is provided on the transverse seat, a second roller is fixed on the output shaft of the traction motor, an elastic rope is provided on the second roller, one end of the elastic rope is wound around the second roller, and the other end is connected to the lower end of the drop frame.

[0012] Beneficial effects: The lateral track is lower than the lowest point of the battery pack mounting frame, i.e., located to the side and below the battery pack mounting frame. The traction motor drives the second roller to rotate, thereby winding and wrapping the elastic rope. When the drop frame is raised to the upper end, the traction motor is started to wind the elastic rope, which will stretch the elastic rope. When the drop frame is released, it will be subjected to the rebound force of the elastic rope, further increasing the acceleration during the fall and increasing the speed when impacting the battery pack, thus simulating a high-speed impact scenario. At the same time, after the impact, the traction motor continues to wind the elastic rope, pulling the drop frame downward to achieve a scraping test.

[0013] In a preferred embodiment of the present invention, the drop frame is fixed with limiting forks on both sides, and the two limiting forks are respectively located on both sides of the two support frames.

[0014] Beneficial effects: The two limiting forks allow the drop frame to remain vertical during descent and prevent it from bouncing out and injuring the testing personnel after impacting the battery pack; at the same time, the support frame simulates the ground, supporting the drop frame and preventing the testing head and battery pack from rebounding to one side of the testing frame to absorb the force when they collide, thus simulating a real impact scenario.

[0015] In a preferred embodiment of the present invention, the limiting frame includes a frame fixedly connected to the support frame, a roller for placing the pull rope is rotatably disposed inside the frame, and support rods extend from both sides of the frame, the support rods resting on the detection frame.

[0016] Beneficial effects: The frame and the roller are used to restrict the pull rope so that it moves laterally. The roller has rotational capability, which can prevent frictional breakage when the pull rope is released or wound up. The support rod extends from the frame and rests on the detection frame, which can improve the stability of the support plate without affecting the lateral movement, making it more stable during impact.

[0017] In a preferred embodiment of the present invention, the two support frames are provided with cushioning pads, which are lower than the battery pack mounting frame and are used to catch the falling frame.

[0018] Beneficial effects: The buffer pad is used to catch the falling drop frame, buffer its falling potential energy, and prevent it from directly impacting the traction motor and causing damage.

[0019] In a preferred embodiment of the present invention, an adjusting member is provided between the testing frame and the battery pack mounting frame to adjust the distance between the battery pack mounting frame and the testing frame.

[0020] Beneficial effects: The adjusting component is used to adjust the distance between the battery pack mounting bracket and the detection bracket, thereby changing the distance between the battery pack and the detection head, and thus changing the depth of impact or scraping.

[0021] In a preferred embodiment of the present invention, a triggering component is provided between the pull rope and the drop frame, the triggering component being used to automatically release the drop frame.

[0022] Beneficial effects: The triggering component is used to automatically release the drop frame, which can be achieved by remote control or power supply, replacing manual operation and reducing safety hazards. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0024] Figure 1 This is a schematic diagram of an embodiment of a new energy vehicle battery pack scratch detection device according to the present invention.

[0025] Figure 2 This is an embodiment of a new energy vehicle battery pack scratch detection device according to the present invention. Figure 1 A magnified view of detail A.

[0026] Figure 3 This is a front view of an embodiment of a new energy vehicle battery pack scratch detection device according to the present invention.

[0027] The reference numerals in the accompanying drawings of the instruction manual include: 1 detection frame, 2 battery pack mounting frame, 3 lifting assembly, 3-1 lifting motor, 3-2 first roller, 3-3 pull rope, 4 drop frame, 5 detection head, 6 transverse track, 7 transverse seat, 8 limit frame, 8-1 frame, 8-2 roller, 8-3 support rod, 9 support frame, 10 traction motor, 11 second roller, 12 elastic rope, 13 limit fork, 14 buffer pad, 15 adjusting component, and 16 trigger component. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0029] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] As attached Figure 1 As shown, the present invention provides a new energy vehicle battery pack scratch detection device: including a detection frame 1 arranged vertically, a battery pack mounting frame 2 vertically arranged on one side below the detection frame 1, an adjusting member 15 provided between the detection frame 1 and the battery pack mounting frame 2 for adjusting the distance between the battery pack mounting frame 2 and the detection frame 1; the battery pack mounting frame 2 is provided with mounting holes for installing and fixing the battery pack, so that it is placed upside down on the side of the detection frame 1, and the adjusting member 15 can be a hydraulic rod, an electric push rod, a screw, etc.

[0033] As attached Figure 1 and attached Figure 2As shown, in this embodiment, a lifting assembly 3 and a drop frame 4 are arranged above the detection frame 1. The lifting assembly 3 is used to lift the drop frame 4 and, after reaching a predetermined height, to allow the drop frame 4 to undergo free fall. A replaceable detection head 5 is provided on the drop frame 4. The lifting assembly 3 includes a lifting motor 3-1 fixed above the detection frame 1. A first roller 3-2 is fixed on the output shaft of the lifting motor 3-1. A pull rope 3-3 is provided on the first roller 3-2. One end of the pull rope 3-3 is wound around the first roller 3-2, and the other end is connected to the upper end of the drop frame 4. The detection head 5 on the drop frame 4... The probe 5 is used to impact or scrape the battery pack, simulating the collision effect during driving. The probe 5 is replaceable, and selecting probes 5 of different shapes and sizes can improve the realism of the detection effect. In use, the lifting motor 3-1 drives the first roller 3-2 to rotate, thereby winding the pull rope 3-3 and lifting the drop frame 4 upward, achieving the effect of automatic height adjustment. By raising it to different heights, the descent distance with the battery pack is changed, thereby changing the speed at impact. Compared with the prior art, the present invention accelerates the probe 5 by gravity, replacing the existing traction device and increasing the speed at impact with the battery pack, making the simulated detection more realistic.

[0034] As attached Figure 1 and attached Figure 2 As shown, in this embodiment, a triggering component 16 is provided between the pull rope 3-3 and the drop frame 4. The triggering component 16 is used to automatically release the drop frame 4. The triggering component 16 can be, for example, an electromagnet, a remote control lock, etc., and can be remotely released after being raised to a predetermined height.

[0035] As attached Figure 1 ~Appendix Figure 3As shown, in this embodiment, the detection frame 1 is provided with a horizontal sliding track 6 on one side of the battery pack mounting frame 2. A horizontally sliding seat 7 is provided in the horizontal sliding track 6. Two support frames 9 are provided on the horizontal sliding seat 7, and limit frames 8 are provided on the two support frames. The limit frames 8 are higher than the highest point of the detection frame 1 and surround the outside of the pull rope 3-3. Limit forks 13 are fixed to both sides of the drop frame 4, and the two limit forks 13 are respectively located on both sides of the two support frames 9. The horizontal sliding track 6 is used to install the horizontal sliding seat 7 and restrict its movement direction. The support frames 9 on the horizontal sliding seat 7 are used to connect to the limit frames 8. The limit frames 8 are used to restrict the pull rope 3-3, allowing the pull rope 3-3 to move when the horizontal sliding seat 7 moves. The rope 3-3 moves, causing the drop frame 4 to move accordingly, adjusting the position of impacting the battery pack and simulating impacts at different locations. In specific use, the lifting motor 3-1 first winds up the rope 3-3 to raise the height, and then the horizontal moving seat 7 moves. At this time, the part of the rope 3-3 above the limiting frame 8 is tilted, while the part below the limiting frame 8 remains vertical, which can avoid changing the angle of the detection head 5. The limiting fork 13 can keep the drop frame 4 vertical when falling and prevent it from popping out after impacting the battery pack and injuring the testing personnel. At the same time, the support frame 9 has the effect of simulating the ground, limiting the drop frame 4 horizontally, so that when the detection head 5 and the battery pack collide, they will not bounce back to the detection frame 1 to dissipate the force, simulating a real impact scenario.

[0036] As attached Figure 2 As shown, in this embodiment, the limiting frame 8 includes a frame 8-1 fixedly connected to the support frame 9. A roller 8-2 for placing the pull rope 3-3 is rotatably disposed inside the frame 8-1. Support rods 8-3 extend from both sides of the frame 8-1 and rest on the detection frame 1. The frame 8-1 and the roller 8-2 are used to restrict the pull rope 3-3, allowing it to move laterally. The roller 8-2 is rotatably connected to the frame 8-1, which can prevent frictional breakage when the pull rope 3-3 is released or wound up. The support rod 8-3 extends from the frame 8-1 and rests on the detection frame 1, which can improve the stability of the support frame 9 without affecting the lateral movement, making it more stable during impact.

[0037] As attached Figure 3 As shown, in this embodiment, buffer pads 14 are provided on the two support frames 9. The buffer pads 14 are lower than the battery pack mounting frame 2 and are used to receive the falling frame 4, buffer its falling potential energy, and prevent it from directly impacting the traction motor 10 and causing it to be damaged.

[0038] As attached Figure 3As shown, in this embodiment, a traction motor 10 is provided on the transverse support 7. A second roller 11 is fixed on the output shaft of the traction motor 10. An elastic rope 12 is provided on the second roller 11. One end of the elastic rope 12 is wound around the second roller 11, and the other end is connected to the lower end of the drop frame 4. The traction motor 10 is used to drive the second roller 11 to rotate, thereby winding the elastic rope 12. When the drop frame 4 is raised to the upper end, the traction motor 10 is started to wind the elastic rope 12, which will stretch the elastic rope 12. When the drop frame 4 is released, it will be rebounded by the elastic rope 12. The tension further increases the acceleration during the fall, increasing the speed when impacting the battery pack, thus simulating a high-speed impact scenario. Simultaneously, after the impact, the traction motor 10 can continue to wind the elastic rope 12, pulling the drop frame 4 downwards to achieve a scrape test. In specific testing, multiple control groups can be set up. The relative distance between the battery pack and the detection head 5 can be adjusted using the adjusting component 15 to achieve three scenarios: impact only, scrape only, and impact and scrape. By raising the height differently, the speed at which the detection head 5 contacts the battery pack is changed, and then the condition of each battery pack is observed, thereby achieving a simulated test of the battery pack.

[0039] When using the device of this invention to perform impact and scratch detection on new energy battery packs, the battery pack is first vertically installed on the battery pack mounting plate. Then, the detection head 5 is installed on the drop frame 4. The lifting motor 3-1 is started to raise the height of the drop frame 4. The lifting height and whether to start the traction motor 10 to increase the pulling force are calculated according to the designed impact speed. After reaching the predetermined height, the drop frame 4 is released and falls. During the fall, it accelerates so that it has a high speed when impacting the battery pack, achieving the effect of simulating the high-speed operation of a car. In this invention, the drop frame 4 is raised to the highest point and the traction motor 10 is started. When the drop frame 4 is released, it is subjected to the rebound force of the elastic rope 12. Under the combined action of the two, the detection head 5 can have a high speed when impacting, simulating the state of a high-speed car and increasing the realism of the simulation detection. At the same time, this invention eliminates the whole vehicle detection and uses a low-power motor to simulate the high-speed impact scenario. The structure is simple, the detection cost is low, and it can simulate high-speed impact and scratch of battery packs.

[0040] The preferred embodiments of this application have been described in detail above with reference to the accompanying drawings. Typical known structures and common knowledge techniques in the preferred embodiments have not been described in detail here. Those skilled in the art can improve and implement the technical solutions of this invention based on the guidance provided in these embodiments and their own capabilities. Some typical known structures, known methods or common knowledge techniques should not be obstacles for those skilled in the art to implement this application.

[0041] The scope of protection claimed in this application shall be determined by the contents of its claims, and the contents described in the invention description, specific embodiments and drawings shall be used to interpret the claims.

[0042] Within the scope of the technical concept of this application, several modifications can be made to the specific implementation of this application, and these modified implementations should also be considered within the protection scope of this application.

Claims

1. A device for detecting scratches on battery packs of new energy vehicles, characterized in that: The device includes a detection frame arranged vertically, a battery pack mounting frame arranged vertically on one side below the detection frame, a lifting assembly and a drop frame arranged above the detection frame, the lifting assembly being used to lift the drop frame and, after being raised to a predetermined height, to allow the drop frame to undergo free fall, and a replaceable detection head being provided on the drop frame. It also includes a transverse track disposed on one side of the detection frame located on the battery pack mounting frame. The transverse track is provided with a horizontally sliding transverse seat. Two support frames are provided on the transverse seat. Limit frames are provided on the two support frames. The limit frames are higher than the highest point of the detection frame. The limit frames are used to allow the transverse seat to move, thereby moving the drop frame and adjusting the position of impact on the battery pack to realize the simulation of impact at different positions. The traverse track is lower than the lowest point of the battery pack mounting frame. A traction motor is installed on the traverse base, and a second roller is fixed on the output shaft of the traction motor. An elastic rope is provided on the second roller. One end of the elastic rope is wound around the second roller, and the other end is connected to the lower end of the drop frame. The traction motor drives the second roller to rotate, thereby winding the elastic rope. When the drop frame is raised to the upper end, the traction motor is started to wind the elastic rope, which will stretch the elastic rope. When the drop frame is released, it will be subjected to the rebound force of the elastic rope, further increasing the acceleration during the fall and increasing the speed when impacting the battery pack, thus simulating a high-speed impact scenario. At the same time, after the impact, the traction motor continues to wind the elastic rope, pulling the drop frame downward to achieve a scraping test. An adjusting component is provided between the detection frame and the battery pack mounting frame to adjust the distance between the battery pack mounting frame and the detection frame; thereby changing the distance between the battery pack and the detection head, and thus changing the depth of impact or scraping.

2. The new energy vehicle battery pack scratch detection device according to claim 1, characterized in that: The lifting assembly includes a lifting motor fixed above the detection frame. A first roller is fixed on the output shaft of the lifting motor. A pull rope is provided on the first roller. One end of the pull rope is wound around the first roller, and the other end is connected to the upper end of the drop frame.

3. The new energy vehicle battery pack scratch detection device according to claim 1, characterized in that: The drop frame is fixed with limit forks on both sides, and the two limit forks are respectively located on both sides of the two support frames.

4. The new energy vehicle battery pack scratch detection device according to claim 2, characterized in that: The limiting frame includes a frame fixedly connected to the support frame, a roller for placing the pull rope is rotatably arranged inside the frame, and support rods extend from both sides of the frame, the support rods resting on the detection frame.

5. The new energy vehicle battery pack scratch detection device according to claim 1, characterized in that: The two support frames are provided with cushioning pads, which are lower than the battery pack mounting frame, to catch the falling frame.

6. The new energy vehicle battery pack scratch detection device according to claim 2, characterized in that: A triggering component is provided between the pull rope and the drop frame, and the triggering component is used to automatically release the drop frame.

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