New energy van chassis

Abstract

The application belongs to the technical field of automobile manufacturing, in particular to a new energy van chassis, which comprises a chassis main body, a rear anti-collision beam is installed at one end of the chassis main body, a battery pack is arranged at the end of the chassis main body away from the rear anti-collision beam, a plurality of through holes are formed in the inside of the chassis main body, two groups of lifting plates are fixed on the two sides of the battery pack, two groups of guide grooves are formed in the two sides of the inside of the chassis main body, the lifting plates are slidingly connected in the inside of the guide grooves, an oil pressure buffer is installed at the top end of the lifting plate away from the guide groove, a camera is arranged below the battery pack; the lifting plates slide in the guide grooves and are buffered by supporting springs, so that the impact suffered by the battery pack when contacting a protruding object can be reduced, the baffle can lift the battery pack before the battery pack contacts the protruding object, and the battery pack is slowly lowered by the oil pressure buffer, whether the bottom end of the battery pack is damaged is detected by the camera, and the unstable situation in the use process of the battery pack is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile manufacturing, and specifically relates to a new energy van chassis. Background Art

[0002] Cars are a means of transportation that we often use in our lives. With the development of new energy, cars are beginning to turn to electrification, and vans are also beginning to be electrified. Due to the different transmission methods of new energy vehicles and oil vehicles, the internal structure of the electric vehicle chassis will be different from that of the traditional oil vehicle chassis.

[0003] A Chinese patent with the existing announcement number CN207683601U discloses a new energy van frame, including a zigzag frame with a compact structure, small size and light weight, which increases cargo loading space, reduces the height of loading and unloading, and facilitates loading and unloading of cargo.

[0004] During use of the above-mentioned technical solution, the vehicle needs to travel on the road. When the vehicle travels on an uneven road, the chassis is easily scratched by protruding objects on the road. The battery pack of a new energy van is usually installed in the middle of the chassis. Therefore, when the chassis is scratched, the battery pack is very likely to be scratched. After multiple scratches, the battery pack may be punctured, causing an internal short circuit and fire in the battery pack, which has a great impact on the safety of the vehicle.

[0005] To this end, the present invention provides a new energy van chassis. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a new energy van chassis described in the present invention includes a chassis body, a rear anti-collision beam is installed at one end of the chassis body, a battery pack is arranged at the end of the chassis body away from the rear anti-collision beam, a plurality of through holes are opened inside the chassis body, two groups of lifting plates are fixed on both sides of the battery pack, two groups of guide grooves are opened on both sides of the chassis body, the lifting plates are slidably connected to the inside of the guide grooves, a guide column is fixed inside the guide grooves, the guide column passes through the inside of the lifting plates, a support spring is sleeved on the outside of the guide column, the bottom end of the support spring is fixedly connected to the lifting plate, the top end of the support spring is fixedly connected to the chassis body, an oil pressure buffer is installed on the side of the top of the lifting plate away from the guide groove, the top end of the oil pressure buffer is fixedly connected to the chassis body, a camera is arranged below the battery pack, and a first baffle is fixed at the end of the battery pack away from the rear anti-collision beam.

[0008] Preferably, a guide shell is fixed on both sides of the battery pack, the guide shell is arranged below the lifting plate, a motor is installed at one end of the guide shell close to the rear anti-collision beam, a threaded rod is rotatably connected inside the guide shell, the end of the motor's rotating shaft is fixedly connected to one end of the threaded rod, a moving block is slidably connected inside the guide shell, and the moving block and the threaded rod are threadedly connected.

[0009] Preferably, a storage shell is fixed to the end of the battery pack away from the rear anti-collision beam, and a plurality of teeth are arranged at equal intervals on the top of the inner side of the guide shell close to the storage shell. The end of the moving block close to the teeth is rotatably connected to the first gear, and a rotating frame is fixed to the end of the first gear away from the moving block. A second baffle is fixed between the bottom ends of the two rotating frames, and a plurality of cameras are installed on the top of the second baffle.

[0010] Preferably, a coil spring is fixed to the outside of the rotating shaft of the first gear, and the outer side of the coil spring is fixedly connected to the moving block. A limiting block is fixed to the end of the rotating shaft of the first gear, and a rotating groove for rotating the limiting block is opened inside the moving block. The limiting block can rotate up to 90° inside the rotating groove.

[0011] Preferably, a plurality of sponge blocks are provided on a side of the storage shell away from the camera, and the positions and numbers of the sponge blocks match those of the cameras.

[0012] Preferably, a protective plate is provided at one end of the battery pack away from the storage shell.

[0013] Preferably, a push frame is provided on the side of the rear anti-collision beam close to the chassis body, and a telescopic rod is fixed on the side of the push frame away from the rear anti-collision beam. The telescopic rod is movably connected to the bottom end of the chassis body through a guide block. A lifting frame is provided between each group of lifting plates, and the lifting frame is fixedly connected to the battery pack. Mobile plates are provided on both sides inside the chassis body, and a sliding hole for sliding the mobile plate is provided at the bottom end of the chassis body. The side of the lifting frame close to the mobile plate is meshed with a second gear, and the second gear is rotatably connected to the chassis body. The top of the mobile plate is meshed with the second gear, and a push block is fixed to one end of the mobile plate close to the telescopic rod.

[0014] Preferably, a guide plate is provided on the side of the protective plate close to the battery pack, the guide plate is fixedly connected to the chassis body, pull ropes are fixed on both sides of the top of the protective plate, a guide sleeve is provided on the outside of the pull rope, the guide sleeve is fixedly connected to the chassis body, and the other end of the pull rope is fixedly connected to the outside of the telescopic rod.

[0015] Preferably, an insert plate is fixed to the end of the movable plate away from the push block, a card hole is opened in the middle of the insert plate, a support block is fixed to the bottom end of the chassis body, the insert plate can be plugged into the support block, the insert block is slidably connected to the inside of the support block, a first spring is fixed to the bottom end of the insert block, and the bottom end of the first spring is fixedly connected to the support block.

[0016] Preferably, a pull rod passes through the interior of the support block, and the top end of the pull rod is fixedly connected to the insert block.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The new energy van chassis described in the present invention can reduce the impact of the battery pack when it contacts a protruding object by sliding a lifting plate within a guide groove and providing buffering through a support spring. The first baffle can lift the battery pack before it contacts the protruding object and slowly lower the battery pack through a hydraulic buffer. The bottom of the battery pack is detected by a camera to see if there is any damage, thereby reducing the instability of the battery pack during use.

[0019] 2. The new energy van chassis described in the present invention drives the push frame to move when the rear anti-collision beam is hit by a rear vehicle. The push frame pushes the push block through the telescopic rod to drive the battery pack to rise, so that the battery pack can be retracted into the interior of the chassis body. At this time, the internal structural parts of the chassis body can provide multiple buffering protections for the battery pack, reducing the occurrence of battery pack being squeezed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 is a perspective view of the present invention;

[0022] Figure 2 It is another perspective perspective diagram of the present invention;

[0023] Figure 3 It is a schematic diagram of the battery pack structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the partial structure of the guide housing in the present invention;

[0025] Figure 5 It is a schematic diagram of the internal structure of the moving block in the present invention;

[0026] Figure 6 This is a schematic diagram of the partial structure of the chassis body in the present invention;

[0027] Figure 7 It is a schematic diagram of the internal structure of the support block in the present invention;

[0028] Figure 8 It is a schematic diagram of the structure of the movable plate in the present invention;

[0029] Figure 9 It is a schematic diagram of the push frame structure in the present invention.

[0030] In the figure: 1. chassis body; 11. rear anti-collision beam; 12. moving plate; 121. plug-in plate; 122. push block; 13. support block; 131. plug-in block; 132. first spring; 133. pull rod; 2. battery pack; 21. lifting plate; 211. guide groove; 212. guide column; 213. support spring; 214. hydraulic buffer; 22. guide shell; 221. motor; 222. threaded rod; 223. moving block; 224. teeth; 225. coil spring; 226. limit block; 23. first gear; 231. rotating frame; 232. second baffle; 233. camera; 234. sponge block; 235. storage shell; 24. lifting frame; 241. second gear; 25. first baffle; 3. push frame; 31. telescopic rod; 32. protective plate; 321. guide plate; 322. pull rope. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0032] like Figures 1 to 4 As shown, a new energy van chassis according to an embodiment of the present invention includes a chassis body 1, a rear anti-collision beam 11 is installed at one end of the chassis body 1, a battery pack 2 is provided at one end of the chassis body 1 away from the rear anti-collision beam 11, a plurality of through holes are opened inside the chassis body 1, two sets of lifting plates 21 are fixed on both sides of the battery pack 2, two sets of guide grooves 211 are opened on both sides of the chassis body 1, the lifting plates 21 are slidably connected to the inside of the guide grooves 211, and the guide columns 212 are fixed inside the guide grooves 211. The column 212 passes through the interior of the lifting plate 21. The guide column 212 is sheathed with a support spring 213. The bottom end of the support spring 213 is fixedly connected to the lifting plate 21, and the top end of the support spring 213 is fixedly connected to the chassis body 1. A hydraulic buffer 214 is installed on the side of the top of the lifting plate 21 away from the guide groove 211. The top end of the hydraulic buffer 214 is fixedly connected to the chassis body 1. A camera 233 is provided below the battery pack 2. A first baffle 25 is fixed to the end of the battery pack 2 away from the rear anti-collision beam 11.

[0033] When a new energy van is in use, its chassis is one of the more important components. The van compartment will be installed at the top of the chassis, and the rear wheels will also be installed on both sides of the floor. When in use, the battery pack 2 will be installed inside the chassis body 1. The battery pack 2 is connected to the front of the vehicle through a connecting line and supplies power to the drive motor of the front of the vehicle. The chassis body 1 is installed at the tail of the front of the vehicle. During driving, air can pass through the through holes opened inside the chassis body 1. When the airflow passes through, the heat generated by the battery pack 2 will be taken away, which can achieve the effect of heat dissipation. After driving on an uneven road section, the raised objects on the road will pass under the battery pack 2, and the higher raised objects will contact the bottom of the battery pack 2. At this time, the first baffle 25 at the bottom of the battery pack 2 is pushed by the raised object. When the first baffle 25 is pushed up, it drives the battery pack 2 to rise. At this time, the battery pack 2 drives the lifting plates 21 on both sides to move upward. The lifting plates 21 slide inside the guide groove 21, and the guide column 212 guides the lifting plates 21. At the same time, the support spring 213 supports the lifting The plate 21 provides buffering, which can reduce the impact of the battery pack 2 when it is pushed up by a protruding object. At the same time, the oil pressure buffer 214 is driven by the battery pack 2 to provide buffering. After the oil pressure buffer 214 is subjected to the impact force, it takes a certain amount of time to return to its initial state. During this period, the battery pack 2 can safely pass the protruding object. When the vehicle is driving at high speed, the air flow rate above is faster than the air flow rate below. Therefore, when driving at high speed, the battery pack 2 will be lifted to the inside of the chassis body 1, which can play a protective role. During driving, the wheels will splash small stones, and the small stones may cause damage to the battery pack 2. At this time, it is necessary to inspect the bottom end of the battery pack 2. The camera 233 can be started to shoot and inspect the bottom end of the battery pack 2. The captured image can be used to determine whether the bottom end of the battery pack 2 is scratched or damaged, and the detection result can be sent to the cab. In this way, the status of the battery pack 2 inside the chassis body 1 can be monitored in real time, and damage to the battery pack 2 can be discovered in time, reducing the occurrence of spontaneous combustion of the battery pack 2.

[0034] like Figures 1 to 4 As shown, a guide shell 22 is fixed on both sides of the battery pack 2, and the guide shell 22 is arranged below the lifting plate 21. A motor 221 is installed at one end of the guide shell 22 close to the rear anti-collision beam 11. A threaded rod 222 is rotatably connected to the inside of the guide shell 22. The end of the rotating shaft of the motor 221 is fixedly connected to one end of the threaded rod 222. A moving block 223 is slidably connected to the inside of the guide shell 22, and the moving block 223 is threadedly connected to the threaded rod 222.

[0035] When the camera 233 needs to be inspected, the motor 221 is started to drive the threaded rod 222 to rotate. At this time, the motor 221 drives the moving block 223 to slide inside the guide shell 22. The guide shell 22 can drive the camera 233 to move during the sliding process. At this time, the camera 233 can take pictures during the movement, and the bottom end of the battery pack 2 can be inspected more comprehensively.

[0036] like Figures 1 to 4 As shown, a storage housing 235 is fixed to the end of the battery pack 2 away from the rear anti-collision beam 11, a plurality of teeth 224 are evenly spaced on the top of the guide housing 22 near the storage housing 235, a first gear 23 is rotatably connected to the end of the moving block 223 near the teeth 224, a rotating frame 231 is fixed to the end of the first gear 23 away from the moving block 223, a second baffle 232 is fixed between the bottom ends of the two rotating frames 231, and a plurality of cameras 233 are mounted on the top of the second baffle 232;

[0037] In the initial state, the camera 233 is stored inside the storage shell 235. At the same time, the second baffle 232 seals the bottom end of the storage shell 235 to prevent dust from entering the storage shell 235 and affecting the camera 233. When the moving block 223 moves, it will drive the first gear 23 to move. During the movement, the first gear 23 will engage with the teeth 224. At this time, the first gear 23 can drive the rotating frame 231 to rotate downward. At this time, the rotating frame 231 drives the second baffle 232 to rotate, and the second baffle 232 drives the camera 233 to move out from the interior of the storage shell 235. At this time, the camera 233 can take pictures. When the shooting is completed, the motor 221 rotates in the opposite direction. At this time, the first gear 23 can drive the camera 233 to retract into the interior of the storage shell 235, which can facilitate the adjustment of the state of the camera 233.

[0038] like Figures 1 to 5 As shown, a coil spring 225 is fixed to the outside of the rotating shaft of the first gear 23. The outer side of the coil spring 225 is fixedly connected to the moving block 223. A limit block 226 is fixed to the end of the rotating shaft of the first gear 23. A rotation groove for the limit block 226 to rotate is opened inside the moving block 223. The limit block 226 can rotate up to 90° inside the rotation groove.

[0039] During the rotation of the first gear 23, the first gear 23 will drive the limit block 226 to rotate inside the moving block 223. At this time, the rotation groove inside the moving block 223 will limit the limit block 226, allowing it to rotate up to 90°. At the same time, the elastic force of the coil spring 225 will drive the first gear 23 to maintain a stable state, preventing the first gear 23 from rotating during the movement of the camera 233, resulting in failure to shoot normally.

[0040] like Figures 1 to 4As shown, a plurality of sponge blocks 234 are provided on the side of the storage shell 235 away from the camera 233 , and the positions and numbers of the sponge blocks 234 match those of the camera 233 ;

[0041] Each time the camera 233 moves in and out of the storage shell 235, the camera 233 moves a certain distance inside the storage shell 235. At this time, the sponge block 234 can wipe the front end of the camera 233 lens to prevent water, dust and other objects from falling onto the camera 233 lens at the bottom of the battery pack 2 during the detection process, resulting in unclear images taken by the camera 233.

[0042] like Figures 1 to 9 As shown, a protective plate 32 is provided at one end of the battery pack 2 away from the receiving shell 235;

[0043] During driving, the vehicle may be rear-ended. In this case, the rear anti-collision beam 11 will be hit by the rear vehicle. There may be sharp objects on the front of the rear vehicle. When the sharp objects come into contact with the battery pack 2, there is a certain probability that the battery pack 2 will be pierced. At this time, the battery pack 2 will be short-circuited and catch fire. A protective plate 32 is provided at the rear of the battery pack 2 to shield the rear of the battery pack 2 when it is hit, and to buffer the force of the impact of the sharp object, thereby reducing the probability of the battery pack 2 being pierced.

[0044] like Figures 1 to 9 As shown, a push frame 3 is provided on the side of the rear anti-collision beam 11 close to the chassis body 1, and a telescopic rod 31 is fixed to the side of the push frame 3 away from the rear anti-collision beam 11. The telescopic rod 31 is movably connected to the bottom end of the chassis body 1 through a guide block. A lifting frame 24 is provided between each set of lifting plates 21. The lifting frame 24 is fixedly connected to the battery pack 2. A movable plate 12 is provided on both sides of the interior of the chassis body 1. A sliding hole for sliding the movable plate 12 is provided at the bottom end of the chassis body 1. A second gear 241 is meshed with the side of the lifting frame 24 close to the movable plate 12. The second gear 241 is rotatably connected to the chassis body 1. The top of the movable plate 12 is meshed with the second gear 241. A push block 122 is fixed to one end of the movable plate 12 close to the telescopic rod 31.

[0045] When the rear anti-collision beam 11 is hit, in order to prevent the battery pack 2 from being hit by the rear vehicle, a push frame 3 is set. When the rear anti-collision beam 11 is deformed by the impact, the push frame 3 will be pushed to move. At this time, the push frame 3 pushes the telescopic rod 31. When the impact force is low, the push frame 3 will first move a distance. During this distance, the push frame 3 does not contact the push block 122. When the impact force is large, the telescopic rod 31 pushes the push block 122 to drive the moving plate 12 to move. At this time, the moving plate 12 drives the second gear 241 to rotate. At this time, the second gear 241 also drives the lifting frame 24 to move upward. The lifting frame 24 will also drive the battery pack 2 to move upward. At this time, the battery pack 2 can be retracted into the interior of the chassis body 1. At this time, the battery pack 2 will be placed in the middle of the chassis body 1. The chassis body 1 has more internal structural parts. When it is hit, the structural parts can provide buffering to a greater extent, reducing the possibility of the battery pack 2 being squeezed.

[0046] like Figures 1 to 9 As shown, a guide plate 321 is provided on one side of the protective plate 32 close to the battery pack 2. The guide plate 321 is fixedly connected to the chassis body 1. A pull rope 322 is fixed on both sides of the top of the protective plate 32. A guide sleeve is provided on the outside of the pull rope 322. The guide sleeve is fixedly connected to the chassis body 1. The other end of the pull rope 322 is fixedly connected to the outer side of the telescopic rod 31.

[0047] During the movement of the telescopic rod 31, the pull rope 322 is in a loose state. When the telescopic rod 31 contacts the push block 122, the pull rope 322 is tightened. Then, when the telescopic rod 31 continues to move, the pull rope 322 will pull the protective plate 32 up, and the protective plate 32 will rise together with the battery pack 2. At this time, the protective plate 32 can always block and protect the rear of the battery pack 2, thereby protecting the battery pack 2 to a greater extent.

[0048] like Figures 1 to 9 As shown, an inserting plate 121 is fixed to one end of the movable plate 12 away from the pushing block 122, a locking hole is opened in the middle of the inserting plate 121, a supporting block 13 is fixed to the bottom end of the chassis body 1, the inserting plate 121 can be plugged into the supporting block 13, the inner part of the supporting block 13 is slidably connected to the inserting block 131, the bottom end of the inserting block 131 is fixed to the first spring 132, and the bottom end of the first spring 132 is fixedly connected to the supporting block 13;

[0049] When the movable plate 12 is pushed, the movable plate 12 will drive the plugging plate 121 to be inserted into the interior of the supporting block 13. At this time, the plugging block 131 is pushed downward by the plugging plate 121. When the plugging plate 121 is fully inserted into the interior of the supporting block 13, the plugging block 131 can be pushed up by the elastic force of the first spring 132 and inserted into the card hole of the plugging plate 121. At this time, the plugging plate 121 can be fixed, and the movable plate 12 can be fixed at the same time. After the movable plate 12 is fixed, the second gear 241 can be stuck to prevent the battery pack 2 from falling again after being retracted into the interior of the chassis body 1.

[0050] like Figures 1 to 9 As shown, a pull rod 133 runs through the interior of the support block 13, and the top end of the pull rod 133 is fixedly connected to the insert block 131;

[0051] When the vehicle is subsequently processed, the battery pack 2 needs to be removed or reset. At this time, pulling the pull rod 133 can drive the plug block 131 to move out of the card hole inside the plug plate 121. At this time, the movable plate 12 resumes movement, allowing the battery pack 2 to be reset, which is convenient for subsequent repair or use.

[0052] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A new energy van chassis, characterized by: The invention comprises a chassis body (1), a rear anti-collision beam (11) is installed at one end of the chassis body (1), a battery pack (2) is arranged at one end of the chassis body (1) away from the rear anti-collision beam (11), a plurality of through holes are opened inside the chassis body (1), two sets of lifting plates (21) are fixed on both sides of the battery pack (2), two sets of guide grooves (211) are opened on both sides of the chassis body (1), the lifting plates (21) are slidably connected to the inside of the guide grooves (211), a guide column (212) is fixed inside the guide grooves (211), and the guide column (212) passes through the lifting plates (211). 1), a support spring (213) is sleeved on the outside of the guide column (212), the bottom end of the support spring (213) is fixedly connected to the lifting plate (21), the top end of the support spring (213) is fixedly connected to the chassis body (1), an oil pressure buffer (214) is installed on the side of the top end of the lifting plate (21) away from the guide groove (211), the top end of the oil pressure buffer (214) is fixedly connected to the chassis body (1), a camera (233) is provided below the battery pack (2), and a first baffle (25) is fixed to the end of the battery pack (2) away from the rear anti-collision beam (11); A guide shell (22) is fixed on both sides of the battery pack (2), and the guide shell (22) is arranged below the lifting plate (21). A motor (221) is installed at one end of the guide shell (22) close to the rear anti-collision beam (11). A threaded rod (222) is rotatably connected inside the guide shell (22), and the end of the rotating shaft of the motor (221) is fixedly connected to one end of the threaded rod (222). A moving block (223) is slidably connected inside the guide shell (22), and the moving block (223) is threadedly connected to the threaded rod (222). A storage shell (235) is fixed to one end of the battery pack (2) away from the rear anti-collision beam (11), a plurality of teeth (224) are arranged at equal intervals on a side of the top end of the guide shell (22) close to the storage shell (235), an end of the moving block (223) close to the teeth (224) is rotatably connected to a first gear (23), an end of the first gear (23) away from the moving block (223) is fixed to a rotating frame (231), a second baffle (232) is fixed between the bottom ends of the two rotating frames (231), and a plurality of cameras (233) are installed on the top end of the second baffle (232); When the camera (233) needs to be inspected, the motor (221) is started to drive the threaded rod (222) to rotate. At this time, the motor (221) drives the moving block (223) to slide inside the guide shell (22). The second baffle (232) seals the bottom end of the storage shell (235) to prevent dust from entering the storage shell (235) and affecting the camera (233). When the moving block (223) moves, it drives the first gear (23) to move. During the movement, the first gear (23) will contact the teeth ( 224) is engaged, and the first gear (23) can drive the rotating frame (231) to rotate downward. At this time, the rotating frame (231) drives the second baffle (232) to rotate, and the second baffle (232) drives the camera (233) to move out from the inside of the storage shell (235). At this time, the camera (233) can take pictures, and the moving block (223) continues to move to drive the camera (233) to move. At this time, the camera (233) can take pictures during the movement, and the bottom end of the battery pack (2) can be detected more comprehensively; A push frame (3) is provided on the side of the rear anti-collision beam (11) close to the chassis body (1), and a telescopic rod (31) is fixed on the side of the push frame (3) away from the rear anti-collision beam (11). The telescopic rod (31) is movably connected to the bottom end of the chassis body (1) through a guide block. A lifting frame (24) is provided between each set of lifting plates (21). The lifting frame (24) is fixedly connected to the battery pack (2). A movable plate (12) is provided on both sides of the interior of the chassis body (1). A sliding hole for sliding the movable plate (12) is provided at the bottom end of the chassis body (1). A second gear (241) is meshedly connected to the side of the lifting frame (24) close to the movable plate (12). The second gear (241) is rotatably connected to the chassis body (1). The top end of the movable plate (12) is meshedly connected to the second gear (241). A push block (122) is fixed to one end of the movable plate (12) close to the telescopic rod (31). In the process of the rear anti-collision beam (11) being hit, in order to prevent the battery pack (2) from being hit by the rear vehicle, a push frame (3) is set. When the rear anti-collision beam (11) is deformed by the impact, the push frame (3) is pushed to move. At this time, the push frame (3) pushes the telescopic rod (31). When the impact force is low, the push frame (3) will first move a distance. During this distance, the push frame (3) does not contact the push block (122). When the impact force is large, the telescopic rod (31) pushes the push block (122) to drive the moving plate (12) to move. At this time, the movable plate (12) drives the second gear (241) to rotate, and the second gear (241) drives the lifting frame (24) to move upward at the same time. The lifting frame (24) also drives the battery pack (2) to move upward, and the battery pack (2) can be retracted into the interior of the chassis body (1). At this time, the battery pack (2) is placed in the middle of the chassis body (1). The chassis body (1) has more internal structural parts, and the structural parts can provide a greater degree of buffering when impacted, reducing the possibility of the battery pack (2) being squeezed.

2. The new energy van chassis according to claim 1, characterized in that: A coil spring (225) is fixed to the outside of the rotating shaft of the first gear (23), and the outer side of the coil spring (225) is fixedly connected to the moving block (223). A limit block (226) is fixed to the end of the rotating shaft of the first gear (23). A rotation groove for the limit block (226) to rotate is provided inside the moving block (223). The limit block (226) can rotate up to 90 degrees inside the rotation groove.

3. The new energy van chassis according to claim 2, characterized in that: A plurality of sponge blocks (234) are provided on a side of the storage shell (235) away from the camera (233), and the positions and numbers of the sponge blocks (234) match those of the camera (233).

4. The new energy van chassis according to claim 1, characterized in that: A protective plate (32) is provided at one end of the battery pack (2) away from the storage shell (235).

5. The new energy van chassis according to claim 1, characterized in that: A guide plate (321) is provided on one side of the protective plate (32) close to the battery pack (2), the guide plate (321) being fixedly connected to the chassis body (1), a pull rope (322) being fixed on both sides of the top of the protective plate (32), a guide sleeve being provided on the outside of the pull rope (322), the guide sleeve being fixedly connected to the chassis body (1), and the other end of the pull rope (322) being fixedly connected to the outside of the telescopic rod (31).

6. The new energy van chassis according to claim 5, characterized in that: An inserting plate (121) is fixed to one end of the movable plate (12) away from the pushing block (122), a card hole is opened in the middle of the inserting plate (121), a support block (13) is fixed to the bottom end of the chassis body (1), the inserting plate (121) can be plugged into the support block (13), the inside of the support block (13) is slidably connected to the inserting block (131), a first spring (132) is fixed to the bottom end of the inserting block (131), and the bottom end of the first spring (132) is fixedly connected to the support block (13).

7. The new energy van chassis according to claim 6, characterized in that: A pull rod (133) is passed through the interior of the support block (13), and the top end of the pull rod (133) is fixedly connected to the insert block (131).

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