New energy automobile battery pack scratch detection device

Abstract

The invention relates to the field of new energy automobile power batteries, in particular to a new energy automobile battery pack scratch detection device which comprises a detection frame arranged in the vertical direction, a battery pack mounting frame is vertically arranged on one side of the lower portion of the detection frame, a lifting assembly and a falling frame are arranged above the detection frame, and the lifting assembly is used for lifting the falling frame. After the falling frame ascends to a preset height, the falling frame does free falling motion, and a replaceable detection head is arranged on the falling frame; the detection head on the falling frame is used for impacting or rubbing the battery pack, during use, the height of the falling frame is increased through the lifting assembly, the connection with the falling frame is loosened after the falling frame is lifted to a preset height, the falling frame does free falling motion, and the speed of impacting the battery pack is changed by lifting different heights. The detection head is accelerated through gravity, an existing traction device is replaced, the speed of collision with the battery pack is increased, and simulation detection is more real.

Description

Technical Field

[0001] The present invention relates to the field of new energy vehicle power batteries, and in particular to a new energy vehicle battery pack scratch detection device. Background Art

[0002] New energy vehicles are vehicles that use unconventional automotive fuels as their power source, including pure electric, hybrid, fuel cell electric and other categories. The bottom of the power battery of pure electric vehicles is extremely vulnerable to impact and scratches. At the same time, the damage caused by the bottom is hidden. Even in some accidents, although there was no short circuit and fire at the time, the subsequent safety cannot be guaranteed. In order to further verify the safety status of the battery after the bottom of the power battery of a pure electric vehicle is scratched by foreign objects, it is necessary to develop a new energy vehicle power battery scratch test device.

[0003] There is a scratch test device currently, which is horizontally provided with a traction device and a scratch head. The battery pack is placed above the scratch head, and the scratch head is towed by the traction device to realize the scratch simulation of the battery pack. This device replaces the vehicle-level battery pack scratch test and reduces the test cost of the scratch test. However, the speed of the scratch needs to be adjusted during the experiment, and the existing devices are difficult to simulate different impact speeds, and the use of complex structures or high-power equipment greatly increases the test cost. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, an object of the present invention is to provide a new energy vehicle battery pack scratch detection device to solve the problem that the existing devices are difficult to simulate different impact speeds.

[0005] To achieve the above-mentioned objectives, the present invention provides a new energy vehicle battery pack scratch detection device, comprising a detection frame arranged in a vertical direction, a battery pack mounting frame being vertically arranged on one side below the detection frame, and a lifting assembly and a drop frame being arranged above the detection frame, the lifting assembly being used to lift the drop frame, and causing the drop frame to perform free fall motion after being lifted to a predetermined height, and a replaceable detection head being arranged on the drop frame.

[0006] Principle of the technical solution: the battery pack mounting frame is used to install and fix the battery pack, the detection head on the drop frame is used to impact or scratch the battery pack to simulate the collision effect during driving, the detection head is replaceable, and selecting detection heads of different shapes and sizes can improve the authenticity of the detection effect. When in use, the height of the drop frame is lifted by the lifting assembly, and the connection with the drop frame is released after it is lifted to a predetermined height, so that the drop frame performs free fall motion, and the falling stroke of the battery pack is changed by lifting to different heights, thereby changing the speed at the time of impact. Compared with the prior art, the present invention accelerates the detection head through gravity, replacing the existing traction device, changing the speed at the time of impact according to different heights, and can effectively increase the speed of the impact head and the battery pack at the time of impact, making the simulated detection more realistic.

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

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

[0009] As a preferred embodiment of the present invention, it also includes a transverse track arranged on the side of the detection frame located on the battery pack mounting frame, a horizontally slidable transverse seat is arranged in the transverse track, two support frames are arranged on the transverse seat, and limit frames are arranged on the two support frames, the limit frames are higher than the highest point of the detection frame, and the limit frames are surrounded by the outside of the pull rope.

[0010] Beneficial effect: The transverse track is used to install the transverse seat and limit its moving direction. The support frame on the transverse seat is used to connect the limit frame. The limit frame is used to limit the pull rope, so that the pull rope can be moved when the transverse seat moves, and then the drop frame can follow the movement, adjust the position of the impact on the battery pack, and realize the impact simulation of different positions.

[0011] As 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 arranged on the transverse seat, a second wire roller is fixed on the output shaft of the traction motor, an elastic rope is arranged on the second wire roller, one end of the elastic rope is wound around the second wire roller, and the other end is connected to the lower end of the drop frame.

[0012] Beneficial effect: the transverse track is lower than the lowest point of the battery pack mounting frame, that is, located on the lower side of the battery pack mounting frame. The traction motor is used to drive the second wire roller to rotate, and then wind up the elastic rope. When the drop frame is lifted to the upper end, the traction motor is started to wind up the elastic rope, which will stretch the elastic rope. When the drop frame is released, it will be subject to the tension of the elastic rope rebound, further increasing the acceleration during falling, and increasing the speed when hitting the battery pack, thereby simulating a high-speed impact scenario. At the same time, after the impact, the traction motor continues to wind up the elastic rope, pulling the drop frame downward to achieve a scratch test.

[0013] As a preferred embodiment of the present invention, limiting fork rods are fixed on both sides of the drop frame, and the two limiting fork rods are respectively located on both sides of the two supporting frames.

[0014] Beneficial effect: The two limiting fork rods can enable the drop frame to maintain a vertical direction when falling and avoid popping out after hitting the battery pack to injure the inspector; at the same time, the support frame has the effect of simulating the ground, supporting the drop frame, so that when the inspection head and the battery pack collide, they will not rebound to one side of the inspection frame to unload the force, simulating a real impact scene.

[0015] As a preferred embodiment of the present invention, the limit frame includes a frame fixedly connected to the support frame, a roller for placing the pull rope is rotatably arranged in the frame, support rods extend from both sides of the frame, and the support rods are placed on the detection frame.

[0016] Beneficial effect: The frame and the roller are used to limit the pull rope so that it can move laterally. The roller has the ability to rotate, which can prevent the pull rope from breaking due to friction when it is released or reeled up. The support rod extends from the frame and is placed on the detection frame. Without affecting the lateral movement, the stability of the support plate can be improved, making it more stable during impact.

[0017] As a preferred embodiment of the present invention, buffer pads are provided on the two support frames, and the buffer pads are lower than the battery pack mounting frame and are used to receive the dropped frame.

[0018] Beneficial effect: The buffer pad is used to receive the falling drop frame, buffer its falling potential energy, and avoid direct impact on the traction motor to cause damage to it.

[0019] As a preferred embodiment of the present invention, an adjustment member is provided between the detection frame and the battery pack mounting frame for adjusting the distance between the battery pack mounting frame and the detection frame.

[0020] Beneficial effect: The adjustment member is used 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 to achieve a change in the depth of impact or scratch.

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

[0022] Beneficial effect: The trigger component is used to automatically release the drop rack, which can be achieved by remote control or power supply, replacing manual operation and reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

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

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

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

[0027] The figure marks in the drawings of the specification include: 1 detection frame, 2 battery pack mounting frame, 3 lifting assembly, 3-1 lifting motor, 3-2 first line 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 line roller, 12 elastic rope, 13 limit fork rod, 14 buffer pad, 15 adjustment part, 16 trigger component. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used 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", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

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

[0032] As attached Figure 1 As shown, the present invention provides a new energy vehicle battery pack scratch detection device: comprising a detection frame 1 arranged along the vertical direction, a battery pack mounting frame 2 is vertically arranged on one side below the detection frame 1, and an adjustment member 15 is arranged between the detection frame 1 and the battery pack mounting frame 2, which is used to adjust the distance between the battery pack mounting frame 2 and the detection frame 1; the battery pack mounting frame 2 is provided with a mounting hole, which is used to install and fix the battery pack so that it is inverted on the side of the detection frame 1, and the adjustment member 15 can be in the form of 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 component 3 and a falling frame 4 are arranged above the detection frame 1, the lifting component 3 is used to lift the falling frame 4, and after lifting to a predetermined height, the falling frame 4 is made to perform free fall motion, and a replaceable detection head 5 is arranged on the falling frame 4, the lifting component 3 includes a lifting motor 3-1 fixed above the detection frame 1, a first wire roller 3-2 is fixed on the output shaft of the lifting motor 3-1, a pull rope 3-3 is arranged on the first wire roller 3-2, one end of the pull rope 3-3 is wound around the wire roller 3-2, and the other end is connected to the upper end of the falling frame 4; the detection head 5 on the falling frame 4 The head 5 is used to hit or scratch the battery pack to simulate the collision effect during driving. The detection head 5 is replaceable. Selecting detection heads 5 of different shapes and sizes can improve the authenticity of the detection effect. When in use, the first wire roller 3-2 is driven to rotate by the lifting motor 3-1, and then the pull rope 3-3 is wound to lift the drop frame 4 upward to achieve the effect of automatic height adjustment. By lifting to different heights, the falling stroke of the battery pack is changed, and then the speed at the time of impact is changed. Compared with the prior art, the present invention accelerates the detection head 5 through gravity, replaces the existing traction device, and increases the speed when colliding 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 trigger component 16 is provided between the pull rope 3-3 and the drop frame 4, and the trigger component 16 is used to automatically release the drop frame 4. The trigger component 16 can be, for example, an electromagnet, a remote control lock, etc., and is released by remote control when it is lifted to a predetermined height.

[0035] As attached Figure 1 ~Attached Figure 3As shown, in the present embodiment, the detection frame 1 is provided with a transverse track 6 on one side of the battery pack mounting frame 2, a transverse seat 7 which can slide horizontally is provided in the transverse track 6, two support frames 9 are provided on the transverse 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, the limit frames 8 are surrounded on the outside of the pull rope 3-3, and limit fork rods 13 are fixed on both sides of the drop frame 4, and the two limit fork rods 13 are respectively located on both sides of the two support frames 9; the transverse track 6 is used to install the transverse seat 7 and limit its moving direction, the support frame 9 on the transverse seat 7 is used to connect the limit frame 8, and the limit frame 8 is used to limit the pull rope 3-3, so that the transverse seat 7 drives the pull rope 3-3 when moving. The rope 3-3 moves, and then the drop frame 4 follows the movement, adjusts the position of the battery pack being hit, and realizes the impact simulation of different positions. When in use, the lifting motor 3-1 is first used to reel in the pull rope 3-3 to raise the height, and then the transverse seat 7 is moved. At this time, the part of the pull rope 3-3 located on the upper side of the limit frame 8 is inclined, while the part located on the lower side of the limit frame 8 is still vertical, which can avoid changing the angle of the detection head 5; the limiting fork rod 13 can allow the drop frame 4 to maintain a vertical direction when falling and avoid popping out after hitting the battery pack to injure the detection personnel; at the same time, the support frame 9 has the effect of simulating the ground, and horizontally limits the drop frame 4, so that the detection head 5 and the battery pack will not rebound to the side of the detection frame 1 to unload the force when colliding, simulating a real impact scene.

[0036] As attached Figure 2 As shown, in this embodiment, the limit frame 8 includes a frame 8-1 fixedly connected to the support frame 9, and a roller 8-2 for placing the pull rope 3-3 is rotatably arranged in the frame 8-1. Support rods 8-3 extend from both sides of the frame 8-1, and the support rods 8-3 are placed on the detection frame 1. The frame 8-1 and the rollers 8-2 are used to limit the pull rope 3-3 so that it can follow the lateral movement. The rollers 8-2 are rotatably connected to the frame 8-1, which can prevent the pull rope 3-3 from breaking due to friction when being released or reeled up. The support rods 8-3 extend from the frame 8-1 and are placed on the detection frame 1. Without affecting the lateral movement, the stability of the support frame 9 can be improved, making it more stable during collision.

[0037] As attached Figure 3 As shown, in this embodiment, a buffer pad 14 is provided on the two support frames 9. The buffer pad 14 is lower than the battery pack mounting frame 2 and is used to receive the falling falling frame 4 to buffer its falling potential energy and avoid directly hitting the traction motor 10 to damage it.

[0038] As attached Figure 3As shown, in this embodiment, a traction motor 10 is provided on the transverse shift seat 7, and a second wire roller 11 is fixed on the output shaft of the traction motor 10, and an elastic rope 12 is provided on the second wire roller 11, one end of the elastic rope 12 is wound around the second wire 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 wire roller 11 to rotate, and then wind up the elastic rope 12. When the drop frame 4 is lifted to the upper end, the traction motor 10 is started to wind up the elastic rope 12, which will stretch the elastic rope 12. When the drop frame 4 is released, it will rebound due to the elastic rope 12. The pulling force can further increase the acceleration during falling and the speed when hitting the battery pack, so as to realize the simulation of high-speed impact. At the same time, after the impact, the traction motor 10 can continue to reel in the elastic rope 12 to pull the drop frame 4 downward to realize the scratch test. During the specific detection, multiple control groups can be set, and the relative distance between the battery pack and the detection head 5 can be adjusted by the adjustment member 15 to realize three conditions of only impact, only scratch, and impact and scratch respectively. By lifting to different heights, the speed at which the detection head 5 contacts the battery pack is changed, and then the conditions of each battery pack are observed and detected, so as to realize the simulation detection of the battery pack.

[0039] When the device of the present invention is used to detect the impact and scratch of the new energy battery pack, the battery pack is first vertically installed on the battery pack mounting plate, and then the detection head 5 is installed on the drop frame 4, and the lifting motor 3-1 is started to lift 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 to fall, and the acceleration is achieved during the falling process, so that it has a higher speed when it hits the battery pack, thereby achieving the effect of simulating the high-speed operation of the car; in the present invention, the drop frame 4 is lifted to the highest point and the traction motor 10 is started, so that the drop frame 4 is subjected to the tension of the elastic rope 12 when released. The combined effect of the two allows the detection head 5 to have a higher speed when it hits, simulating the state of a high-speed running car, and increasing the authenticity of the simulated detection; at the same time, the present invention cancels the whole vehicle detection and uses a low-power motor to simulate the high-speed impact scenario, has a simple structure, and has a low detection cost, and can simulate the high-speed impact and scratch of the battery pack.

[0040] The preferred implementation modes of the present application are described in detail above in conjunction with the accompanying drawings. Typical known structures and common knowledge technologies in the preferred implementation modes are not described in detail here. Ordinary technicians in the relevant field can improve and implement the technical solutions of the present invention based on their own abilities under the inspiration given by the present implementation modes. Some typical known structures, known methods or common knowledge technologies should not become obstacles for ordinary technicians in the relevant field to implement the present application.

[0041] The scope of protection required by this application shall be based on the contents of its claims, and the contents recorded in the invention content, specific implementation methods and drawings of the specification shall be used to interpret the claims.

[0042] Within the technical concept of the present application, several modifications may be made to the specific implementation methods of the present application, and these modified specific implementation methods should also be regarded as within the protection scope of the present application.

Claims

1. A new energy vehicle battery pack scratch detection device, characterized in that: It includes a detection frame arranged in a vertical direction, a battery pack mounting frame is vertically arranged on one side below the detection frame, a lifting assembly and a drop frame are arranged above the detection frame, the lifting assembly is used to lift the drop frame and make the drop frame perform free fall motion after lifting to a predetermined height, and a replaceable detection head is arranged on the drop frame.

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 wire roller is fixed on the output shaft of the lifting motor, a pull rope is provided on the first wire roller, one end of the pull rope is wound around the wire 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 2, characterized in that: It also includes a transverse track arranged on the side of the detection frame located on the battery pack mounting frame, a transverse seat that can slide horizontally is arranged in the transverse track, two support frames are arranged on the transverse seat, and limit frames are arranged on the two support frames. The limit frames are higher than the highest point of the detection frame, and the limit frames are surrounded on the outside of the pull rope.

4. The new energy vehicle battery pack scratch detection device according to claim 3, characterized in that: The transverse track is lower than the lowest point of the battery pack mounting frame. A traction motor is arranged on the transverse seat. A second wire roller is fixed on the output shaft of the traction motor. An elastic rope is arranged on the second wire roller. One end of the elastic rope is wound around the second wire roller, and the other end is connected to the lower end of the drop frame.

5. The new energy vehicle battery pack scratch detection device according to claim 3, characterized in that: Limiting fork rods are fixed on both sides of the drop frame, and the two limiting fork rods are respectively located on both sides of the two supporting frames.

6. The new energy vehicle battery pack scratch detection device according to claim 3, characterized in that: The limiting frame comprises a frame fixedly connected to the supporting frame, a roller for placing the pull rope is rotatably arranged in the frame, support rods extend from both sides of the frame, and the support rods are placed on the detection frame.

7. The new energy vehicle battery pack scratch detection device according to claim 3, characterized in that: Buffer pads are provided on the two support frames. The buffer pads are lower than the battery pack mounting frame and are used to receive the dropped frame.

8. The new energy vehicle battery pack scratch detection device according to claim 1, characterized in that: An adjusting member is provided between the detection frame and the battery pack mounting frame for adjusting the distance between the battery pack mounting frame and the detection frame.

9. The new energy vehicle battery pack scratch detection device according to claim 8, characterized in that: A trigger component is provided between the pull rope and the drop frame, and the trigger component is used for automatically releasing the drop frame.

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