Cushioning device for lightweight chassis of new energy automobile

Abstract

The invention belongs to the technical field of vehicle suspensions, and particularly relates to a cushioning device for a lightweight chassis of a new energy vehicle, which comprises a chassis, the upper end of the chassis is connected with the same mounting plate through a plurality of dampers, and the cushioning device further comprises a battery protection mounting mechanism and a vibration deformation air supply compensation mechanism. According to the invention, the heat dissipation spaces of the battery modules can be filled when the chassis vibrates, so that the problem that the use safety of the battery modules is influenced by collision and vibration transmission between the battery modules is avoided, and the heat dissipation channels between the battery modules are opened again when no vibration exists; the heat dissipation quality of the battery module is ensured, the current vibration intensity can be automatically confirmed based on the air supply degree change caused by the vibration intensity, and when the vibration intensity is too large and reaches a threshold value, a signal is fed back to control the battery management system to start an active voltage balance program and automatically regulate and control the temperature monitoring frequency and the temperature early warning threshold value. And the driving safety is better ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle suspension, and in particular relates to a shock absorbing device for a lightweight chassis of a new energy vehicle. Background Art

[0002] The traditional lightweight chassis of a car only provides shock absorption effect through the front suspension and the rear suspension, and there is no shock absorbing function for the chassis body. Therefore, when the vehicle is traveling on a bumpy road, the shock absorbing effect of the vehicle cannot be effectively guaranteed only by the front suspension and the rear suspension, so that the occupants can still feel the bumps transmitted by the wheels. In order to overcome the above problems, when improving existing new energy vehicles, the shock absorbing treatment of the chassis is usually considered, such as a shock absorbing device for a lightweight chassis of a new energy vehicle proposed in the patent announcement number CN114801625A.

[0003] For new energy vehicles, the battery packs of new energy vehicles are usually installed in the chassis. The batteries are sensitive to vibrations. Severe vibrations will cause damage to the internal structure of the battery and loose connections between battery modules, thereby affecting the performance and safety of the battery. The above patent documents only improve the shock absorption of the vehicle chassis, without considering the shock absorption performance of new energy vehicle batteries. At present, elastic buffer materials are often added between battery modules to reduce collision and vibration transmission between battery modules. However, this method will make the battery modules installed tightly, making the heat dissipation channel area between the battery modules small, which greatly affects the heat dissipation quality of the battery modules. Summary of the invention

[0004] The purpose of the present invention is to provide a shock absorbing device for a lightweight chassis of a new energy vehicle in view of the above problems.

[0005] To achieve the above object, the present invention adopts the following technical solution: A shock absorbing device for a lightweight chassis of a new energy vehicle, comprising a chassis, the upper end of which is connected to the same mounting plate through a plurality of shock absorbers, and further comprising:

[0006] A battery protection installation mechanism is installed on the installation plate, and a plurality of battery modules are separately and fixedly installed in the battery protection installation mechanism;

[0007] A vibration deformation air supply compensation mechanism is installed between the chassis and the mounting plate, is sleeved outside the shock absorber, and is connected to the battery protection mounting mechanism;

[0008] An active damping control mechanism, fixedly mounted on the mounting plate and connected to an outer wall of the battery protection mounting mechanism;

[0009] A pressure relief protection mechanism is fixedly mounted on the outer wall of the battery protection installation mechanism and is connected to the battery protection installation mechanism;

[0010] A vibration intensity feedback control mechanism is fixedly mounted on the outer wall of the pressure relief protection mechanism and is transmission-connected to the pressure relief protection mechanism;

[0011] The PLC controller is installed on the mounting plate and is electrically connected to the active shock absorption control mechanism and the vibration intensity feedback control mechanism respectively.

[0012] In the above-mentioned shock absorbing device for the lightweight chassis of a new energy vehicle, the battery protection installation mechanism includes a mounting shell, the inner wall of the mounting shell is integrally connected with a plurality of partition plates, and the plurality of partition plates divide the mounting shell into a plurality of mounting chambers, and the battery module is fixedly installed in the mounting chamber, and an air supply passage connected to each other is provided in the mounting shell and the partition plates, and an air supply port connected to the air supply passage is provided in the inner side wall of the mounting shell and the side wall of the partition plate, and an elastic protection airbag connected to the air supply port is also fixedly connected to the inner side wall of the mounting shell and the side wall of the partition plate, and an exhaust pipe connected to the air supply passage is also fixedly installed on the outer wall of the mounting shell.

[0013] In the above-mentioned shock absorbing device of the lightweight chassis of a new energy vehicle, the vibration deformation air supply compensation mechanism includes a plurality of compressed air bags fixedly connected between the chassis and the mounting plate, the compressed air bags are arranged outside the shock absorber, the upper side wall of the compressed air bag is fixedly connected with an air supply pipe, the end of the air supply pipe away from the compressed air bag is connected with the air supply channel in the mounting shell, the lower side wall of the compressed air bag is fixedly connected with an air supply pipe, and both the air supply pipe and the air supply pipe are provided with a one-way valve.

[0014] In the above-mentioned shock-absorbing device for the lightweight chassis of a new energy vehicle, the active shock-absorbing control mechanism includes a positioning frame fixedly mounted on the mounting plate, and a plurality of shock-absorbing damping rods are hinged between the inner wall of the positioning frame and the outer wall of the mounting shell. The side wall of the positioning frame is also symmetrically fixed with a plurality of electric push rods, and the moving ends of the plurality of electric push rods on the same side are fixedly connected with the same extrusion fixing plate, which abuts against the outer wall of the mounting shell.

[0015] In the above-mentioned shock absorbing device for the lightweight chassis of a new energy vehicle, the pressure relief protection mechanism includes a pressure relief shell fixedly mounted on the outer wall of the mounting shell, the lower end of the pressure relief shell is fixedly connected to a pressure relief pipe connected to the air supply channel, a pressure piston is provided in a sealing sleeve inside the pressure relief shell, a synchronization rod of a U-shaped structure is fixedly connected to the upper end of the pressure piston, a pressure spring mounted outside the synchronization rod is fixedly mounted between the upper end of the pressure piston and the top of the inner wall of the pressure relief shell, and a pressure relief port is provided on the upper end side wall of the pressure relief shell.

[0016] In the above-mentioned shock absorbing device of the lightweight chassis of a new energy vehicle, the vibration intensity feedback control mechanism includes a control shell fixedly mounted on the outer wall of the pressure relief shell, the end of the synchronization rod away from the pressure piston penetrates and extends into the control shell, the inner wall of the control shell is fixedly connected to a plurality of guide slide rods arranged side by side and parallel to the synchronization rod, and the plurality of guide slide rods are externally slidably sleeved with the same force-bearing seat, the upper end of the force-bearing seat and the top of the inner wall of the control shell are fixedly connected with a plurality of return springs sleeved outside the guide slide rods, a trigger switch is fixedly mounted on the lower end of the force-bearing seat, the rod wall at one end of the synchronization rod located in the control shell is fixedly connected with a trigger plate located on the lower side of the trigger switch, and a laser rangefinder arranged opposite to the force-bearing seat is also fixedly mounted on the top of the inner wall of the control shell.

[0017] In the above-mentioned shock absorbing device for the lightweight chassis of a new energy vehicle, a section of elastic bellows is provided on the air supply pipe to match the displacement of the mounting shell.

[0018] In the above-mentioned shock absorbing device for the lightweight chassis of a new energy vehicle, a plurality of universal balls are installed at the bottom of the mounting shell through a plurality of ball seats, and the plurality of universal balls are equidistantly distributed.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. Through the battery protection installation mechanism, battery module, and vibration deformation air supply compensation mechanism, the heat dissipation space of the battery module can be filled by inflating the elastic protection airbag when the chassis vibrates, providing an additional clamping force for the battery module to avoid the impact of collision and vibration transmission between battery modules on the safety of battery module use. When there is no vibration, the elastic protection airbag will gradually reset, so that the heat dissipation channels between multiple battery modules will be reopened, ensuring the heat dissipation quality of the battery module. It can automatically adjust according to actual conditions and has better performance. It can also further play a shock-absorbing role on the chassis while generating air supply through the compression airbag deformation, thereby improving the shock-absorbing performance of the chassis. There is no other additional equipment involved, and it is energy-saving and environmentally friendly, and easy to operate.

[0021] 2. Through the set pressure relief protection mechanism and vibration intensity feedback control mechanism, the current vibration intensity can be automatically confirmed based on the change in air supply caused by the vibration intensity, and when the vibration intensity is too large and reaches the threshold, the feedback signal controls the battery management system to start the active voltage balancing program. Because when the chassis vibrates, the battery cells in the battery module will experience voltage fluctuations due to loose connections or mechanical stress. By starting the active voltage balancing program, the power of the higher voltage battery cells is transferred to the lower voltage battery cells to maintain the voltage balance of each battery cell. This is like an "energy porter" to ensure that the voltage of the entire battery module is in a stable state to avoid To prevent the performance and life of the battery from being affected by local voltage being too high or too low, and the greater the vibration intensity, the higher the temperature monitoring frequency of the battery module should be controlled and a stricter temperature warning threshold should be set (lower the warning temperature value), because chassis vibration can easily cause the temperature of certain local areas in the battery module to rise sharply. This is due to factors such as internal structure changes or poor contact caused by vibration. When the vibration intensity is greater and the risk of internal structure changes and poor contact of the battery module is higher, driving safety can be better ensured by increasing the temperature monitoring frequency and lowering the temperature warning threshold, so as to detect and respond to abnormal temperature increases more promptly.

[0022] 3. Through the active shock absorption control mechanism and vibration intensity feedback control mechanism, when there is no vibration during normal driving, the battery protection installation mechanism is in a basic support state, and the rigidity is maintained at a high level to ensure the stable installation of the battery module. When the vibration intensity is detected to be too large and reaches the threshold, the rigid fixing state of the battery protection installation mechanism is automatically released, so that the active shock absorption control mechanism can effectively absorb and buffer the vibration, reduce the energy transmitted to the battery module by the vibration, protect the internal structure of the battery module from damage, and extend the service life of the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 It is a front view cross-sectional structural schematic diagram of the present invention;

[0025] Figure 3 It is a cross-sectional structural schematic diagram of the battery protection installation mechanism of the present invention;

[0026] Figure 4 yes Figure 3 A magnified view of part A;

[0027] Figure 5 It is a structural schematic diagram of the vibration deformation air supply compensation mechanism of the present invention;

[0028] Figure 6 It is a schematic cross-sectional structural diagram of the pressure relief protection mechanism and the vibration intensity feedback control mechanism of the present invention.

[0029] In the figure: 1 chassis, 2 battery protection installation mechanism, 21 installation shell, 22 partition plate, 23 air supply channel, 24 air supply port, 25 elastic protection airbag, 26 exhaust pipe, 27 universal ball, 3 vibration deformation air supply compensation mechanism, 31 compression airbag, 32 air supply pipe, 33 air supply pipe, 34 one-way valve, 35 elastic bellows, 4 active shock absorption control mechanism, 41 positioning frame, 42 shock absorbing damping rod, 43 electric push rod, 44 extrusion fixing plate, 5 pressure relief protection mechanism, 51 pressure relief shell, 52 pressure relief pipe, 53 pressure piston, 54 synchronization rod, 55 pressure spring, 56 pressure relief port, 6 vibration intensity feedback control mechanism, 61 control shell, 62 guide slide rod, 63 force seat, 64 reset spring, 65 trigger switch, 66 trigger plate, 67 laser rangefinder, 7 shock absorber, 8 installation plate, 9 battery module. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] like Figure 1-Figure 6 As shown, a shock absorbing device for a lightweight chassis of a new energy vehicle comprises a chassis 1, the upper end of the chassis 1 is connected to a same mounting plate 8 via a plurality of shock absorbers 7, and further comprises:

[0032] A battery protection installation mechanism 2 is installed on a mounting plate 8. A plurality of battery modules 9 are fixedly and separately installed in the battery protection installation mechanism 2. The battery protection installation mechanism 2 includes a mounting shell 21. A plurality of partition plates 22 are integrally connected to the inner wall of the mounting shell 21. The plurality of partition plates 22 divide the mounting shell 21 into a plurality of mounting chambers. The battery modules 9 are fixedly installed in the mounting chambers. An air supply passage 23 is provided in the mounting shell 21 and the partition plates 22. An air supply port 24 connected to the air supply passage 23 is provided on the inner side wall of the mounting shell 21 and the side wall of the partition plates 22. An elastic protection air bag 25 connected to the air supply port 24 is also fixedly connected to the inner side wall of the mounting shell 21 and the side wall of the partition plates 22. An exhaust pipe 26 connected to the air supply passage 23 is also fixedly installed on the outer wall of the mounting shell 21. A plurality of universal balls 27 are installed on the bottom of the mounting shell 21 through a plurality of ball seats. The plurality of universal balls 27 are equidistantly distributed.

[0033] The vibration deformation air supply compensation mechanism 3 is installed between the chassis 1 and the mounting plate 8, and is sleeved outside the shock absorber 7, and is connected to the battery protection mounting mechanism 2. The vibration deformation air supply compensation mechanism 3 includes a plurality of compression air bags 31 fixedly connected between the chassis 1 and the mounting plate 8. The compression air bags 31 are sleeved outside the shock absorber 7. The upper end side wall of the compression air bag 31 is fixedly connected with an air supply pipe 32. The end of the air supply pipe 32 away from the compression air bag 31 is connected with the air supply channel 23 in the mounting shell 21. The lower end side wall of the compression air bag 31 is fixedly connected with an air supply pipe 33. Both the air supply pipe 32 and the air supply pipe 33 are provided with a one-way valve 34. The air supply pipe 32 is provided with a section of elastic bellows 35, which is adapted to the displacement of the mounting shell 21.

[0034] The active shock absorption control mechanism 4 is fixedly mounted on the mounting plate 8 and connected to the outer wall of the battery protection mounting mechanism 2. The active shock absorption control mechanism 4 includes a positioning frame 41 fixedly mounted on the mounting plate 8. A plurality of shock absorbing damping rods 42 are hinged between the inner wall of the positioning frame 41 and the outer wall of the mounting shell 21. A plurality of electric push rods 43 are symmetrically fixedly inserted into the side wall of the positioning frame 41. The moving ends of the plurality of electric push rods 43 on the same side are fixedly connected to the same extrusion fixing plate 44, and the extrusion fixing plate 44 abuts against the outer wall of the mounting shell 21.

[0035] The pressure relief protection mechanism 5 is fixedly mounted on the outer wall of the battery protection mounting mechanism 2 and is connected to the battery protection mounting mechanism 2. The pressure relief protection mechanism 5 includes a pressure relief shell 51 fixedly mounted on the outer wall of the mounting shell 21. The lower end of the pressure relief shell 51 is fixedly connected to a pressure relief pipe 52 connected to the air supply channel 23. A pressure piston 53 is provided in a sealing sleeve inside the pressure relief shell 51. A synchronization rod 54 of a U-shaped structure is fixedly connected to the upper end of the pressure piston 53. A pressure spring 55 mounted outside the synchronization rod 54 is fixedly mounted between the upper end of the pressure piston 53 and the top of the inner wall of the pressure relief shell 51. A pressure relief port 56 is provided on the upper side wall of the pressure relief shell 51.

[0036] The vibration intensity feedback control mechanism 6 is fixedly mounted on the outer wall of the pressure relief protection mechanism 5 and is transmission-connected to the pressure relief protection mechanism 5. The vibration intensity feedback control mechanism 6 includes a control shell 61 fixedly mounted on the outer wall of the pressure relief shell 51. One end of the synchronization rod 54 away from the pressure piston 53 extends into the control shell 61. The inner wall of the control shell 61 is fixedly connected with a plurality of guide slide rods 62 arranged side by side and parallel to the synchronization rod 54. The plurality of guide slide rods 62 are externally slidably sleeved with the same force-bearing seat 63. The upper end of the force-bearing seat 63 and the top of the inner wall of the control shell 61 are fixedly connected with a plurality of return springs 64 sleeved on the outside of the guide slide rod 62. A trigger switch 65 is fixedly mounted on the lower end of the force-bearing seat 63. The rod wall at one end of the synchronization rod 54 located in the control shell 61 is fixedly connected with a trigger plate 66 located on the lower side of the trigger switch 65. A laser rangefinder 67 arranged opposite to the force-bearing seat 63 is also fixedly mounted on the top of the inner wall of the control shell 61.

[0037] The PLC controller is mounted on the mounting plate 8 and is electrically connected to the active damping control mechanism 4 and the vibration intensity feedback regulating mechanism 6 respectively.

[0038] The operating principle of the present invention is described as follows: the vibration received by the chassis 1 is transmitted to the multiple shock absorbers 7 for buffering and shock absorption, and when the shock absorber 7 is deformed to offset the vibration force, the compressed air bag 31 is driven to compress and deform, and then the air in the compressed air bag 31 is transported to the air supply channel 23 in the mounting shell 21 and the partition plate 22 through the air supply pipe 32. When the vibration intensity is small, the single air supply volume of the compressed air bag 31 is small, and the air transported to the air supply channel 23 can be discharged through the exhaust pipe 26. When the vibration intensity is large, the air supply frequency and air supply volume of the compressed air bag 31 are large, and then the air transported to the air supply channel 23 cannot be discharged in time through the exhaust pipe 26, thereby increasing the air pressure in the air supply channel 23. Then, the air supply port 24 is cooperated to further transport air into the elastic protective airbag 25, so that the elastic protective airbag 25 is inflated and bulged. The elastic protective airbag 25 contacts the outside of the battery module 9, and provides further clamping force to the battery module 9, so as to avoid the problem that the vibration intensity is too large and affects the stable placement of the battery module 9. It can also provide shock-absorbing protection for the battery module 9, improve the protection performance of the battery module 9, and when there is no vibration, because the exhaust pipe 26 is always exhausting, the air pressure in the air supply channel 23 will gradually decrease, and then the elastic protective airbag 25 will gradually reset, so that the heat dissipation channels between the multiple battery modules 9 are reopened, ensuring the heat dissipation quality of the battery module 9, and can be automatically adjusted according to the actual situation, with better performance;

[0039] When the vibration intensity is too large, making the air supply frequency and air supply volume of the compressed airbag 31 too large, the increased air pressure in the air supply channel 23 not only makes the elastic protective airbag 25 swell to the maximum extent of contact with the battery module 9, but also the surplus is supplied into the pressure relief shell 51 through the pressure relief pipe 52, driving the pressure piston 53 to overcome the action of the pressure spring 55 and move relatively in the pressure relief shell 51. When the air pressure is too large, the pressure piston 53 moves to the uppermost side of the pressure relief shell 51, exposing the pressure relief port 56, and quickly discharging the excess air, thereby avoiding the problem of rupture and damage of the mounting shell 21, the partition plate 22 and the elastic protective airbag 25 caused by excessive pressure in the air supply channel 23;

[0040] When the pressure piston 53 moves due to the increase of air pressure, the trigger plate 66 is driven by the synchronization rod 54 to move synchronously in the control shell 61. When the trigger plate 66 presses on the trigger switch 65, it means that the vibration intensity of the current chassis 1 reaches the set protection threshold. At this time, the PLC controller controls the battery management system to start the active voltage balancing program. Because when the chassis 1 vibrates, the cells in the battery module 9 will experience voltage fluctuations due to loose connections or mechanical stress. By starting the active voltage balancing program, the power of the cells with higher voltage is transferred to the cells with lower voltage to maintain the balance of the voltage of each cell. This is like an "energy carrier" to ensure that the voltage of the entire battery module 9 is in a stable state to avoid affecting the performance and life of the battery due to excessively high or low local voltage. The control of the battery management system to start the active voltage balancing program is implemented every 20 minutes, that is, after completing the startup work of the active voltage balancing program, even if the current trigger switch 65 is still pressed and triggered, it is necessary to wait for 20 minutes before starting the active voltage balancing program again to avoid the problem that frequent startup of the active voltage balancing program will affect the performance of the battery module 9.

[0041] The laser rangefinder 67 monitors the distance to the force-bearing seat 63 in real time, and uses the shortest distance monitored as the basis for temperature monitoring. Specifically, when the vibration intensity of the chassis 1 is greater, the air pressure in the air supply channel 23 increases more, and the trigger plate 66 pushes the force-bearing seat 63 to move a greater distance, making the laser rangefinder 67 monitor the shortest distance to the force-bearing seat 63 smaller. At this time, the PLC controller controls the temperature monitoring frequency of the battery module 9 to be higher and sets a stricter temperature warning threshold (lowering the warning temperature value), because the vibration of the chassis 1 can easily cause the temperature of some local areas in the battery module 9 to rise sharply. This is due to factors such as internal structural changes or poor contact caused by vibration. When the strength is greater and the risk of internal structural changes and poor contact of the battery module 9 is higher, driving safety can be better ensured by increasing the temperature monitoring frequency and lowering the temperature warning threshold, so as to more promptly detect and respond to abnormal temperature increases. The adjustment interval of the temperature monitoring frequency and the temperature warning threshold is set to 60 minutes each time, that is, after completing the adjustment of the temperature monitoring frequency and the temperature warning threshold, wait 60 minutes and then reconfirm the specific adjustment data of the temperature monitoring frequency and the temperature warning threshold based on the shortest detection distance of the laser rangefinder 67 from the force bearing seat 63, to ensure that when the battery module 9 is subjected to a large impact vibration, there is enough time to determine whether the battery module 9 is affected;

[0042] When the trigger switch 65 is pressed and triggered, indicating that the current vibration intensity is large, the PLC controller synchronously controls the electric push rod 43 to drive the extrusion fixing plate 44 to move back, so that the extrusion fixing plate 44 is out of contact with the mounting shell 21, and the rigid fixing state of the mounting shell 21 is released, so that the shock absorbing and damping rod 42 between the positioning frame 41 and the mounting shell 21 can be put into use. When there is normal driving without vibration, the battery protection mounting mechanism 2 is in a basic supporting state, and the rigidity is maintained at a high level to ensure the stable installation of the battery module 9. When it is monitored that the vibration intensity is too large and reaches a threshold, the rigid fixing state of the battery protection mounting mechanism 2 is automatically released, so that the shock absorbing and damping rod 42 in the active shock absorbing control mechanism 4 can effectively absorb and buffer the vibration, reduce the energy transmitted to the battery module 9 by the vibration, protect the internal structure of the battery module 9 from damage, and extend the service life of the battery module 9.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A shock absorbing device for a lightweight chassis of a new energy vehicle, comprising a chassis (1), wherein the upper end of the chassis (1) is connected to a same mounting plate (8) via a plurality of shock absorbers (7), wherein: Also includes: A battery protection installation mechanism (2) is installed on the installation plate (8), and a plurality of battery modules (9) are separately and fixedly installed in the battery protection installation mechanism (2); A vibration deformation air supply compensation mechanism (3) is installed between the chassis (1) and the mounting plate (8), is sleeved outside the shock absorber (7), and is connected to the battery protection mounting mechanism (2); An active damping control mechanism (4) is fixedly mounted on the mounting plate (8) and connected to an outer wall of the battery protection mounting mechanism (2); A pressure relief protection mechanism (5) is fixedly mounted on the outer wall of the battery protection installation mechanism (2) and is connected to the battery protection installation mechanism (2); A vibration intensity feedback control mechanism (6) is fixedly mounted on the outer wall of the pressure relief protection mechanism (5) and is transmission-connected to the pressure relief protection mechanism (5); A PLC controller is mounted on the mounting plate (8) and is electrically connected to the active vibration reduction control mechanism (4) and the vibration intensity feedback control mechanism (6) respectively.

2. The shock absorbing device for a lightweight chassis of a new energy vehicle according to claim 1, characterized in that: The battery protection installation mechanism (2) comprises an installation shell (21), the inner wall of the installation shell (21) is integrally connected with a plurality of partition plates (22), the plurality of partition plates (22) divide the installation shell (21) into a plurality of installation chambers, the battery module (9) is fixedly installed in the installation chamber, the installation shell (21) and the partition plates (22) are provided with an air supply passage (23) connected thereto, the inner side wall of the installation shell (21) and the side wall of the partition plates (22) are provided with an air supply port (24) connected thereto, the inner side wall of the installation shell (21) and the side wall of the partition plates (22) are also fixedly connected with an elastic protection air bag (25) connected thereto, and the outer wall of the installation shell (21) is also fixedly provided with an exhaust pipe (26) connected thereto.

3. The shock absorbing device for a lightweight chassis of a new energy vehicle according to claim 2, characterized in that: The vibration deformation air supply compensation mechanism (3) comprises a plurality of compressed air bags (31) fixedly connected between the chassis (1) and the mounting plate (8); the compressed air bags (31) are sleeved outside the shock absorber (7); the upper side wall of the compressed air bag (31) is fixedly connected to an air supply pipe (32); one end of the air supply pipe (32) away from the compressed air bag (31) is connected to an air supply channel (23) in the mounting shell (21); the lower side wall of the compressed air bag (31) is fixedly connected to an air supply pipe (33); both the air supply pipe (32) and the air supply pipe (33) are provided with a one-way valve (34).

4. The shock absorbing device for a lightweight chassis of a new energy vehicle according to claim 2, characterized in that: The active shock absorption control mechanism (4) comprises a positioning frame (41) fixedly mounted on the mounting plate (8), a plurality of shock absorbing and damping rods (42) being hingedly connected between the inner wall of the positioning frame (41) and the outer wall of the mounting shell (21), a plurality of electric push rods (43) being symmetrically fixedly inserted into the side wall of the positioning frame (41), the moving ends of the plurality of electric push rods (43) on the same side being fixedly connected to the same extrusion fixing plate (44), and the extrusion fixing plate (44) being in contact with the outer wall of the mounting shell (21).

5. The shock absorbing device for a lightweight chassis of a new energy vehicle according to claim 2, characterized in that: The pressure relief protection mechanism (5) comprises a pressure relief shell (51) fixedly mounted on the outer wall of the mounting shell (21); the lower end of the pressure relief shell (51) is fixedly connected to a pressure relief pipe (52) connected to the air supply channel (23); a pressure piston (53) is provided in a sealing sleeve inside the pressure relief shell (51); the upper end of the pressure piston (53) is fixedly connected to a synchronization rod (54) of a U-shaped structure; a pressure spring (55) sleeved on the outside of the synchronization rod (54) is fixedly mounted between the upper end of the pressure piston (53) and the top of the inner wall of the pressure relief shell (51); and a pressure relief port (56) is provided on the upper side wall of the pressure relief shell (51).

6. The shock absorbing device for a lightweight chassis of a new energy vehicle according to claim 5, characterized in that: The vibration intensity feedback control mechanism (6) comprises a control shell (61) fixedly mounted on the outer wall of the pressure relief shell (51); one end of the synchronization rod (54) away from the pressure piston (53) extends into the control shell (61); the inner wall of the control shell (61) is fixedly connected with a plurality of guide slide rods (62) arranged side by side and parallel to the synchronization rod (54); the plurality of guide slide rods (62) are externally slidably sleeved with a same force bearing seat (63); the force bearing seat (63) A plurality of return springs (64) sleeved outside the guide slide bar (62) are fixedly connected to the upper end and the top of the inner wall of the regulating shell (61); a trigger switch (65) is fixedly installed at the lower end of the force-bearing seat (63); a trigger plate (66) located at the lower side of the trigger switch (65) is fixedly connected to the rod wall of one end of the synchronization rod (54) located in the regulating shell (61); and a laser rangefinder (67) arranged opposite to the force-bearing seat (63) is also fixedly installed on the top of the inner wall of the regulating shell (61).

7. The shock absorbing device for a lightweight chassis of a new energy vehicle according to claim 3, characterized in that: The air supply pipe (32) is provided with a section of elastic bellows (35) adapted to the displacement of the mounting shell (21).

8. The shock absorbing device for a lightweight chassis of a new energy vehicle according to claim 2, characterized in that: A plurality of universal balls (27) are installed on the bottom of the installation shell (21) via a plurality of ball seats, and the plurality of universal balls (27) are equidistantly distributed.

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