A testing device for crash testing of new energy vehicles

Abstract

This invention discloses a testing device for crash testing of new energy vehicles, comprising a base, a collision wall disposed on the base for vehicle collision, a sliding unit slidably disposed on the base, and a transition plate disposed in front of the collision wall to block the sliding unit. This invention provides a testing device for crash testing of new energy vehicles that, while ensuring the vehicle's collision speed, keeps the vehicle in an electrically powered driving state at all times, thereby obtaining real test data on the vehicle's battery pack and electronic control system during crash testing, making the crash testing of new energy vehicles more comprehensive.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle testing technology, and in particular to a testing device for crash testing of new energy vehicles. Background Technology

[0002] In the development of automotive passive safety performance, a common method for whole-vehicle crash testing involves fixing the test vehicle to a mobile trolley or slide, accelerating the trolley to a specified speed using a traction or ejection device, and then causing the vehicle to impact a fixed rigid barrier, thus simulating a frontal collision. In this type of test, the test vehicle is in a state of engine shutdown and power disconnection; the drive motor is not running, and the power battery and high-voltage electrical circuits are all in a non-operating state.

[0003] For new energy vehicles that rely on power batteries as their core energy source, the power battery constantly carries operating current and is in a continuous power output state during normal driving. When a collision occurs during actual driving, the battery pack continues to have current flowing inside while enduring mechanical impact and deformation. This charged state can easily induce internal short circuits when the structure is damaged, leading to thermal runaway and causing fire or explosion. Therefore, whether the battery's power output conditions can be realistically reproduced in crash tests is directly related to the accuracy of battery safety assessments.

[0004] However, in existing push-cart crash tests, the battery outputs no current throughout the entire process. This fails to reflect the battery's structural response characteristics when carrying current, and also fails to assess the battery management system's protection strategies at the moment of impact. Consequently, there is a significant blind spot in evaluating the battery safety performance of new energy vehicles in crash scenarios. Therefore, there is an urgent need for a crash test scheme that can maintain continuous power output from the power battery before and after a collision. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by providing a testing device for crash testing of new energy vehicles. This application supports the vehicle tires via rollers, allowing the tires to rotate while supported. This ensures that the electric vehicle or two-wheeled electric vehicle remains in motion throughout the testing process, thereby obtaining real-world crash data of the new energy vehicle while it is in motion.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a testing device for collision testing of new energy vehicles, comprising a base, a collision wall for vehicle collision, a sliding unit slidably disposed on the base, and a transition plate for blocking the sliding unit in front of the collision wall. The sliding unit includes a sliding plate slidably disposed on the base, a first support device and a second support device disposed on the sliding plate, each with a rotating roller. A vehicle tire presses against the rollers of both supports, allowing the tire to rotate relative to the sliding plate. An unlocking unit is configured to unlock the first and second support devices when the sliding plate is stopped by the transition plate, allowing both to descend below the sliding plate, enabling the vehicle to travel on the sliding plate and undergo collision testing with the collision wall while in motion.

[0007] Its beneficial effect is that the vehicle is in motion while the sliding plate is moving, so that the vehicle's battery is in working condition. After the sliding plate is stopped, the vehicle can be in normal driving condition to conduct a collision test with the collision wall, thereby ensuring that the vehicle's speed meets the requirements of the collision test. At the same time, the vehicle's battery is in normal working condition during the collision, so as to complete a comprehensive test of the various performance aspects of the electric vehicle.

[0008] In the above scheme, preferably, the sliding plate has a first slot for the first support device to move downward and a second slot for the second support device to move downward, so that both can move in and out of the upper end surface of the sliding plate. A support plate for supporting and connecting the first support device and the second support device is fixedly disposed on the lower end surface of the sliding plate.

[0009] In the above scheme, preferably, the second support device includes a lifting frame that can move vertically and retractably, and the shaft roller is rotatably arranged at the upper end of the lifting frame.

[0010] In the above scheme, preferably, the first support device further includes a rotating frame and a first power device. One end of the rotating frame is rotatably mounted on the bearing plate, and the other end is rotatably mounted with a roller. The first power device is used to rotate the rotating frame so that the roller moves in and out of the upper surface of the sliding plate and cooperates with the roller on the second support device to support the vehicle tire.

[0011] In the above scheme, preferably, the first power device is guided and slidably disposed on the inclined push block on the bearing plate, and a first telescopic member for abutting against it and sliding on the bearing plate is fixedly disposed in front of the inclined push block. The inclined surface of the inclined push block abuts against the side wall of the rotating frame so that when the inclined push block moves backward, it pushes the rotating frame to rotate upward.

[0012] In the above scheme, preferably, the bearing plate is also equipped with a locking tongue for locking the inclined push block. The locking tongue is elastically slidably disposed on the bearing plate, and its front end face is inclined. When the inclined push block passes by, it elastically retracts into the bearing plate, and after passing by, it automatically extends to automatically limit the inclined push block, so that the shaft roller of the first power device is locked beyond the sliding plate.

[0013] In the above scheme, preferably, the unlocking unit includes an impact member that is elastically guided and slidably disposed on the bottom surface of the sliding plate. The impact member is connected to the bottom of the locking tongue member by a pull rope, so that when the sliding plate contacts the transition plate, the impact member slides by inertia or is pushed and slid, so as to pull the locking tongue member back into the sliding plate and unlock the rotating frame.

[0014] In the above scheme, preferably, a sliding groove is provided on the rear end wall of the first slot, and a sealing plate is disposed in the sliding groove. The sealing plate is used to extend forward and press against the front end wall of the first slot after the rotating frame is unlocked to seal the first slot, so that the vehicle can pass through the first slot smoothly.

[0015] In the above scheme, preferably, the transition plate is provided with a damping buffer to provide damping and deceleration for the sliding plate, and the upper surface of the transition plate is flush with the upper surface of the sliding plate, so that after the sliding plate stops, the vehicle can smoothly pass through the transition plate and then conduct a collision test with the collision wall.

[0016] In the above-mentioned scheme, preferably, a stabilizer frame is also included. Guide members are arranged on the sliding plate and the transition plate. The stabilizer frame is guided and slidably arranged on the guide members and locked by a locking device. A connector is arranged on the stabilizer frame to abut against the rear of the vehicle and provide support force to the vehicle when the sliding plate moves forward. A second impact plate is arranged on the stabilizer frame. A counterweight is unidirectionally guided and slidably arranged on the guide members. The counterweight is connected to the stabilizer frame through an elastic member. After the frontal impact test of the vehicle is completed, the locking device of the stabilizer frame is unlocked, and the stabilizer frame moves forward through the elastic member to impact the rear of the vehicle, which can perform a rear-end collision test.

[0017] The beneficial effects of this invention are: This invention provides a testing device for collision testing of new energy vehicles. Under the premise of ensuring the collision speed of the vehicle, the vehicle is always in a powered driving state, so as to obtain real test data of the vehicle's battery pack and electronic control system when conducting collision testing of new energy vehicles, making the collision testing of new energy vehicles more comprehensive. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the present invention.

[0019] Figure 2 This is a schematic diagram of the sliding unit of the present invention.

[0020] Figure 3 This is a cross-sectional view of the sliding unit of the present invention.

[0021] Figure 4 This is a partial enlarged view of the location of the impact component in this invention.

[0022] Figure 5 This is a schematic diagram of the sliding unit used in the present invention to test an electric vehicle. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Example 1:

[0024] See Figures 1-5 A test device for crash testing of new energy vehicles includes a base 1, a sliding unit and an unlocking unit. The front end of the base 1 is fixedly configured with a collision wall 11 for colliding with the vehicle. The base 1 has a groove 13 perpendicular to the collision wall 11. The left and right sides of the groove 13 are fixedly arranged with guide rails 14 perpendicular to the collision wall 11.

[0025] The sliding unit includes a sliding plate 21, a first support device 22, a second support device 23, and a blocking plate 24. Multiple sliders are arranged on the lower end surface of the sliding plate 21 and are guided to slide on the guide rail 14 by the sliders, so that the sliding plate 21 can move along the guide rail 14 toward the collision wall 11.

[0026] The base 1 is also equipped with a pulling device 15, which includes sprockets rotatably arranged at the front and rear ends of the sink 13. The front and rear sprockets are equipped with chains, and the chains are equipped with pulling elements. The sprockets are equipped with drive motors for driving their rotation.

[0027] The drive motor is activated to rotate the chain, and the pull member on the chain abuts against the rear end wall of the sliding plate 21, thereby moving the sliding plate 21 toward the impact wall 11.

[0028] The front end of the settling tank 13 is provided with a transition plate 12, the upper end surface of which is flush with the upper end surface of the sliding plate 21. A damping buffer is provided on the transition plate 12. An impact member 214 is elastically guided and slidably arranged on the bottom surface of the sliding plate 21. When the sliding plate 21 approaches the transition plate 12, the damping buffer touches the impact member 214, and then the impact member 214 elastically moves backward relative to the sliding plate 21 to provide a buffering force for the sliding plate 21. At the same time, the damping buffer also provides a buffering force for the sliding plate 21, so that the sliding plate 21 can quickly change from a moving state to a relatively stationary state.

[0029] The damping buffer is formed to a diameter of 0-15mm, the lead of the impact member 214 is 10mm, and a contact switch is arranged on the lead of the impact member 214. After the impact member 214 elastically slides backward into place, it presses against the contact switch, thereby controlling the drive motor to brake, so that the sliding plate 21 stops moving forward and remains locked. Through the combined action of the damping buffer and the impact member 214, when the sliding plate 21 is stationary, the gap between the front end of the sliding plate 21 and the transition plate 12 is between 0-10mm, so that the gap does not affect the speed and stability of the vehicle when the tire passes over it.

[0030] The testing device is used to conduct crash tests on electric two-wheeled or four-wheeled vehicles. By configuring a first support device 22 and a second support device 23 at the corresponding position of each wheel on the sliding plate 21, each tire on the vehicle is supported by both, so that the testing device can be used to test two-wheeled or four-wheeled electric vehicles.

[0031] The sliding plate 21 has a first slot 211 and a second slot 212, and a bearing plate 213 is fixedly disposed on the lower end surface of the sliding plate 21. The first support device 22 includes a rotating frame 222, a roller 221 and a first power component 223. A rotating shaft is disposed on the lower end of the rotating frame 222, and the roller 221 is rotatably disposed on the side wall of the bearing plate 213 via the rotating shaft. The roller 221 is rotatably disposed on the other end of the rotating frame 222, and the rotation point of the rotating frame 222 is located behind the first slot 211. When the rotating frame 222 rotates clockwise upward, the roller 221 on it can move upward from below the sliding plate 21 through the first slot 211 to above the sliding plate 21. When rotating counterclockwise downward, the roller 221 can fall back downward to below the sliding plate 21.

[0032] The support plate 213 is equipped with a slide rail, which is located below the side support plate of the rotating frame 222. The first power component 223 includes a slanted push block 2231, a first telescopic component, and a second elastic component 2233. The slanted push block 2231 is guided and slidably disposed on the slide rail, while one end of the second elastic component 2233 is connected to the front end of the slanted push block 2231, and the other end is connected to the head of the slide rail, so that the slanted push block 2231 has a forward pulling force in the initial state. The first telescopic component is fixedly disposed on the slide rail and located on the slanted push block 2231. In front of the push block 2231, when the first telescopic member extends, the front end of its telescopic rod touches the front end face of the inclined push block 2231, and the rear end face of the inclined push block 2231 is an inclined surface. The lower end face of the side support plate of the rotating frame 222 presses against the inclined surface of the inclined push block 2231. Therefore, when the inclined push block 2231 moves backward under the action of the first telescopic member, the inclined push block 2231 pushes the side support plate of the rotating frame 222 to rotate upward clockwise, so that the shaft roller 221 is lifted upward from the position of the first slot 211 to above the sliding plate 21.

[0033] The slide rail is elastically telescopically equipped with a locking tongue 2232. The front end face of the locking tongue 2232 is inclined. Therefore, during the backward movement of the inclined push block 2231, it first presses against the front end face of the locking tongue 2232, causing the locking tongue 2232 to slide downward and retract into the slide rail. After the inclined push block 2231 passes, it rises under the action of elastic force to limit the forward recovery of the inclined push block 2231. At this time, the first telescopic member retracts, and the inclined push block 2231 is locked. At this time, the shaft roller 221 on the first support device 22 is in the raised state, and the angle between the rotating frame 222 and the slide rail is less than 90 degrees. Therefore, after the locking tongue 2232 is unlocked, the inclined push block 2231 quickly recovers forward under the action of the second elastic member 2233. At the same time, the rotating frame 222 quickly rotates counterclockwise downward under the action of gravity, that is, it returns to below the sliding plate 21.

[0034] The second support device 23 includes a lifting frame 231 capable of vertical telescopic movement. The lifting frame 231 is positioned on the bearing plate 213 below the second slot 212. The lifting frame 231 moves vertically to allow the rotatable roller 221, which is rotatably positioned at its upper end, to enter and exit the upper surface of the sliding plate 21 from the second slot 212.

[0035] When the lifting frame 231 is fully extended, its roller 221 is at the same height as the roller 221 on the first support device 22, and their axes are parallel to each other and parallel to the impact surface of the collision wall 11.

[0036] The vehicle's tires are supported by rollers 221 extending from the front and rear to the upper surface of the sliding plate 21, and are suspended in the air. The distance between the vehicle tires and the upper surface of the sliding plate 21 is less than 10mm. Different sliding plates 21 are configured according to different vehicle models so that each tire of the vehicle is supported by the first support device 22 and the second support device 23.

[0037] Simultaneously, before the sliding plate 21 begins to move, the vehicle is controlled to reach the required test speed via a remote control device. At this time, the vehicle's tires rotate, driving the front and rear rollers 221 to rotate, thereby keeping the vehicle stationary relative to the sliding plate 21. After the vehicle reaches the set speed, the pulling device 15 pulls the sliding plate 21 towards the collision wall 11, causing the sliding plate 21 to reach the set speed. At this point, the vehicle's speed relative to the base 1 is consistent with the speed of its tires. This ensures that the battery unit is in normal working condition during vehicle testing.

[0038] The impact member 214 is connected to the lower end of the locking tongue member 2232 by a first pull rope 216. When the impact member 214 moves backward, the locking tongue member 2232 moves downward by the first pull rope 216, thereby unlocking the inclined push block 2231.

[0039] When the sliding plate 21 contacts the transition plate 12, the set speed has been reached. Therefore, after the sliding plate 21 contacts the transition plate 12, the inclined push block 2231 is immediately unlocked, and the rotating frame 222 quickly rotates downwards to release the obstruction to the front of the vehicle tire. At this time, the sliding plate 21 is stopped by the transition plate 12, and the vehicle moves forward under inertia. Since the tire's speed is the same as the previous speed of the sliding plate 21, the tire presses against the stopped sliding plate 21 and continues to move towards the collision wall 11 under the action of inertia and the vehicle's tire movement. This ensures that the vehicle's speed meets the requirements when it contacts the collision wall 11, and the vehicle's battery is also in working condition at the time of impact.

[0040] After the impact member 214 elastically slides backward into position, it presses against the contact switch. While controlling the drive motor to brake, it controls the lifting frame 231 to move downward, so that when the rear wheel of the vehicle passes the lifting frame 231 at the position of the front wheel, the lifting frame 231 is located below the sliding plate 21, so as to avoid the axle roller 221 on it from blocking the rear wheel of the vehicle.

[0041] The sliding plate 21 is also provided with a guide member 26, and a stabilizer 25 is provided on the guide member 26. The stabilizer 25 is locked on the guide member 26 by a locking device, wherein the locking device in this embodiment is a bolt.

[0042] When the test vehicle is a two-wheeled electric vehicle, the stabilizer 25 is equipped with a connector, which is a clamping member used to hold the tail frame of the two-wheeled electric vehicle so that the vehicle is in a stable left and right state, and provides rear support force to the vehicle when the sliding plate 21 moves forward, so that the vehicle tires rotate stably on the front and rear axle rollers 221 during the acceleration of the sliding plate 21.

[0043] When the test vehicle is a four-wheeled electric vehicle, the connecting member is an abutment plate, which provides rear support to the vehicle when the sliding plate 21 moves forward, so that the vehicle tires rotate stably on the front and rear axle rollers 221 during the acceleration of the sliding plate 21.

[0044] Its working principle or usage method is as follows: In the initial state, each tire of the vehicle is supported by the first support device 22 and the second support device 23, and the vehicle is controlled to start moving, so that the tire speed is at the speed required for the test. At this time, the tires of the vehicle drive the front and rear axle rollers 221 to rotate, thereby making the vehicle stationary relative to the sliding plate 21.

[0045] After the vehicle reaches the set speed, the pulling device 15 starts to pull the sliding plate 21 towards the collision wall 11, so that the sliding plate 21 accelerates to the set speed. During the acceleration of the sliding plate 21, the stabilizer 25 provides rear support force for the vehicle, so that it travels stably on the axle roller 221. At this time, the vehicle's battery unit is in normal working condition.

[0046] After the sliding plate 21 contacts the transition plate 12, the sliding plate 21 is stopped, and the inclined push block 2231 is unlocked immediately. Then, the rotating frame 222 quickly rotates downward to release the obstruction to the front end of the vehicle tire, so that the vehicle tire contacts the sliding plate 21 and continues to move forward at the speed required for the test under the action of inertia and tire speed, so that the vehicle speed meets the requirements when it contacts the collision wall 11, and the vehicle battery is also in working state at the time of impact.

[0047] When the sliding plate 21 is stopped, the control unit of the test device controls the drive motor to brake while controlling the lifting frame 231 to move downward, so that when the rear wheels of the vehicle pass the lifting frame 231 at the position of the front wheels, the lifting frame 231 is located below the sliding plate 21, so as to avoid the axle roller 221 on it from blocking the rear wheels of the vehicle.

[0048] Example 2:

[0049] The difference from Embodiment 1 lies in the structure of the guide member 26 and the stabilizer 25; all other aspects are the same. The guide member 26 is also equipped with a counterweight 261 that slides unidirectionally towards the collision wall 11. The counterweight 261 has an internal ratchet mechanism that prevents it from sliding backward. When it needs to be reset backward, the ratchet mechanism is manually unlocked to allow it to slide backward for reset.

[0050] The transition plate 12 is also equipped with a second guide member coaxial with the guide member 26 on the sliding plate 21. After the sliding plate 21 is stopped by the transition plate 12, the guide member 26 and the second guide member combine to form a single guide member. The counterweight 261 slides onto the second guide member on the transition plate 12, and a damping buffer is provided on the collision wall 11 to buffer the contact between the counterweight 261 and the collision wall 11. The locking device for locking the stabilizer 25 is an electric latch, and the counterweight 261 and the stabilizer 25 are connected by an elastic member.

[0051] After the sliding plate 21 is stopped, the counterweight 261 moves along the guide and impacts the collision wall 11. At this time, the elastic element is stretched and filled with elastic force, and the vehicle has completed the frontal collision test. After the data from each sensor on the testing equipment is detected, the control unit of the testing device controls the electric latch to retract, thereby unlocking the stabilizer 25. The stabilizer 25 is equipped with a second impact plate 251. Under the action of the elastic element, the stabilizer 25 moves towards the collision wall 11, and the vehicle that has now completed the frontal collision is subjected to a rear-end collision test again to further verify the vehicle's performance.

[0052] Example 3:

[0053] This embodiment makes the following further improvements based on embodiment 1 or 2: Sliding grooves 215 are provided on the rear end walls of both the first groove 211 and the second groove 212. A sealing plate 24 is elastically slidably disposed within the sliding groove 215. The rear end of the sealing plate 24 is connected to the lifting frame 231 via a second pull rope. When the lifting frame 231 rises, the sealing plate 24 is pulled into the sliding groove 215 by the action of the second pull rope. When the lifting frame 231 descends, the second pull rope is... When the axis of the roller 221 descends below the upper end face of the sliding plate 21, the front end of the sealing plate 24 extends to the opening of the sliding groove 215. When the lifting frame 231 descends to the lowest point, the front end of the sealing plate 24 touches the front wall of the first groove 211 or the second groove 212, thereby sealing both. The distance between the upper end face of the sealing plate 24 and the upper end face of the sliding plate 21 is within the range of 1-5mm, so that the sealing plate 24 will not affect the tire when it passes by.

[0054] The descent speed of the rotating frame 222 is faster than that of the lifting frame 231. Simultaneously, when the first support device 22 and the second support device 23 are reset, the lifting frame 231 first rises to its initial position. At this time, the sealing plate 24 is pulled into the sliding groove 215. The vehicle is then pushed or driven onto the sliding plate, and the rear end of the vehicle tire presses against the roller 221 of the second support device 23. At this time, the first telescopic member extends, causing the rotating frame 222 to rotate clockwise. The roller 22 of the first support device 22 presses against the front end of the tire, thereby lifting the vehicle. After the first telescopic member extends to its maximum position, the first support device 22 is locked by the locking tongue 2232. At this time, the first telescopic member retracts and returns to its initial state.

[0055] Alternatively, the lifting frame 231 can be raised first, and after it is raised to the position, the rotating frame 222 will start to rotate. After the first support device 22 is locked by the locking tongue 2232, the vehicle is hoisted onto the test device by the hoisting equipment, so that the vehicle's tires press against the rollers 221 of the first support device 22 and the second support device 23.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A testing device for crash testing of new energy vehicles, characterized in that: Includes a base (1), on which a collision wall (11) is disposed for collision of a vehicle, and a sliding unit is slidably disposed on the base (1), and a transition plate (12) is disposed in front of the collision wall (11) to block the sliding unit. The sliding unit includes a sliding plate (21) that is guided and slidably disposed on a base (1). A first support device (22) and a second support device (23) are disposed on the sliding plate (21). A shaft roller (221) is rotatably disposed on both the first support device (22) and the second support device (23). The vehicle tire presses against the shaft roller (221) of both devices so that the tire can rotate relative to the sliding plate (21). The unlocking unit is configured to unlock the first support device (22) and the second support device (23) when the sliding plate (21) is stopped by touching the transition plate (12), so that both are lowered below the sliding plate (21) to allow the vehicle to travel on the sliding plate (21) while the vehicle is in a driving state and is undergoing a collision test with the collision wall (11).

2. The testing device for crash testing of new energy vehicles according to claim 1, characterized in that: The sliding plate (21) is provided with a first slot (211) for the first support device (22) to move downward and a second slot (212) for the second support device (23) to move downward, so that the two can move in and out of the upper surface of the sliding plate (21); A support plate (213) for supporting and connecting the first support device (22) and the second support device (23) is fixedly disposed on the lower end surface of the sliding plate (21).

3. The testing device for collision testing of new energy vehicles according to claim 2, characterized in that: The second support device (23) includes a lifting frame (231) capable of vertical telescopic movement, and the roller (221) is rotatably disposed on the upper end of the lifting frame (231).

4. The testing device for collision testing of new energy vehicles according to claim 3, characterized in that: The first support device (22) further includes a rotating frame (222) and a first power device (223). One end of the rotating frame (222) is rotatably mounted on the bearing plate (213), and the other end is rotatably mounted with a roller (221). The first power device (223) is used to rotate the rotating frame (222) so that the roller (221) enters and exits the upper surface of the sliding plate (21) and cooperates with the roller (221) on the second support device (23) to support the vehicle tire.

5. The testing device for crash testing of new energy vehicles according to claim 4, characterized in that: The first power unit (223) is guided and slidably disposed on the inclined push block (2231) on the support plate (213), and a first telescopic member for abutting against it sliding on the support plate (213) is fixedly disposed in front of the inclined push block (2231). The inclined surface of the inclined push block (2231) abuts against the side wall of the rotating frame (222) so that when the inclined push block (2231) moves backward, it pushes the rotating frame (222) to rotate upward.

6. The testing device for crash testing of new energy vehicles according to claim 5, characterized in that: The support plate (213) is also equipped with a locking tongue (2232) for locking the inclined push block (2231). The locking tongue (2232) is elastically slidably disposed on the support plate (213) and its front end face is inclined. When the inclined push block (2231) passes by, it elastically retracts into the support plate (213) and automatically extends after passing by to automatically limit the inclined push block (2231) so that the shaft roller (221) of the first power device (223) is locked beyond the sliding plate (21).

7. A testing device for crash testing of new energy vehicles according to claim 6, characterized in that: The unlocking unit includes an impact member (214) that is elastically guided and slidably disposed on the bottom surface of the sliding plate (21). The impact member (214) is connected to the bottom of the locking tongue (2232) by a pull rope, so that when the sliding plate (21) contacts the transition plate (12), the impact member (214) slides by inertia or is pushed and slid, so as to pull the locking tongue (2232) back into the sliding plate (21) and unlock the rotating frame (222).

8. A testing apparatus for crash testing of new energy vehicles according to any one of claims 7, characterized in that: A sliding groove (215) is provided on the rear wall of the first slot (211). A sealing plate (24) is disposed in the sliding groove (215). The sealing plate (24) is used to extend forward and press against the front wall of the first slot (211) after the rotating frame (222) is unlocked to block the first slot (211) so that the vehicle can pass through the first slot (211) smoothly.

9. A testing apparatus for crash testing of new energy vehicles according to any one of claims 1-7, characterized in that: The transition plate (12) is provided with a damping buffer to provide damping deceleration for the sliding plate (21), and the upper surface of the transition plate (12) is flush with the upper surface of the sliding plate (21) so that the vehicle can smoothly pass through the transition plate (12) after the sliding plate (21) stops and then conduct a collision test with the collision wall (11).

10. A testing device for crash testing of new energy vehicles according to claim 9, characterized in that: It also includes a stabilizer (25), on which guides (26) are disposed, the stabilizer (25) being guided and slidably disposed on the guides (26) and locked by a locking device; The stabilizer (25) is equipped with a connector for contacting the rear of the vehicle and providing support for the vehicle when the sliding plate (21) moves forward; The stabilizer (25) is equipped with a second impact plate (251), and the guide (26) is equipped with a counterweight (261) that slides in one direction. The counterweight (261) is connected to the stabilizer (25) through an elastic element. After the frontal impact test of the vehicle is completed, the stabilizer (25) is unlocked by the locking device of the stabilizer (25), and the stabilizer (25) moves forward through the elastic element to impact the rear of the vehicle, thus enabling a rear-end collision test.

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