Automobile chassis device with heat dissipation function

By integrating a porous support structure and a coolant cooling system into the chassis of a new energy vehicle, combined with a shock absorption system, the problems of battery pack temperature rise and vibration are solved, achieving efficient cooling and safety protection.

CN120941979APending Publication Date: 2025-11-14QILU UNIVERSITY OF TECHNOLOGY (SHANDONG ACADEMY OF SCIENCES)
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Patent Information

Application Number
CN202511447724.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-10-11
Publication Date
2025-11-14

AI Technical Summary

Technical Problem

During operation, the battery packs of existing new energy vehicles can swell and expand due to increased temperature, which can easily lead to combustion and damage, posing a safety hazard.

Method used

A car chassis device with heat dissipation was designed, which includes a chassis, a shock absorption system and a cooling system. It utilizes a porous support structure and coolant to accelerate heat transfer. Combined with the heat dissipation system and the shock absorption system, it achieves rapid cooling and vibration protection of the battery.

Benefits of technology

It improves battery cooling efficiency, reduces energy consumption, and absorbs impact through a shock absorption system, ensuring the safety and stability of the battery pack.

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Abstract

The invention discloses an automobile chassis device with a heat dissipation function, which belongs to the technical field of new energy automobiles and comprises a chassis, a damping system and a mounting part. A battery and a cooling system are arranged in the mounting part; the damping system is arranged below the mounting part and is connected with the chassis; one side of the mounting part is communicated with a heat dissipation system through a pipeline; a plurality of mounting cavities are formed in the mounting part; the cooling system comprises a plurality of cooling units; a battery and a cooling unit are arranged in the mounting cavity; the cooling unit comprises cooling liquid and a supporting structure; the supporting structure is arranged between the battery and the mounting cavity; and the cooling liquid is filled between the battery and the mounting cavity. The cooling device has the advantages of being good in cooling effect, high in cooling efficiency, good in damping effect and low in energy consumption.
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Description

Technical Field

[0001] This invention belongs to the field of new energy vehicle technology, and more specifically relates to a car chassis device with heat dissipation. Background Technology

[0002] New energy vehicles refer to automobiles that use unconventional vehicle fuels as their power source, or use conventional vehicle fuels with new onboard power devices, integrating advanced technologies in vehicle power control and drive, resulting in vehicles with advanced technical principles and new technologies and structures. However, during operation, existing new energy vehicles experience battery pack expansion and bulging due to increased temperature. If not inspected and replaced promptly, this can easily lead to battery pack combustion, damaging the new energy vehicle and causing dangerous accidents. Therefore, how to provide a vehicle chassis device with heat dissipation is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0003] In view of this, the present invention provides an automotive chassis device with heat dissipation, adopting the following technical solution: A car chassis device with heat dissipation includes a chassis, a shock absorption system, and a mounting section. A battery and a cooling system are housed inside the mounting section. The shock absorption system is located below the mounting section and connected to the chassis. One side of the mounting section is connected to the heat dissipation system via a pipe. The mounting section has multiple mounting cavities. The cooling system includes multiple cooling units. A battery and a cooling unit are housed within each mounting cavity. Each cooling unit includes coolant and a support structure. The support structure is located between the battery and the mounting cavity. The coolant fills the space between the battery and the mounting cavity.

[0004] Furthermore, the mounting section includes a mounting compartment and a top cover; the top cover is bolted to the mounting compartment.

[0005] Furthermore, the battery is mounted in the mounting cavity by a fixed bracket.

[0006] Furthermore, the support structure is configured to be porous, and the coolant fills the pores of the support structure.

[0007] Furthermore, the top wall of the mounting cavity is inclined, and an air outlet is provided on one side of the higher part of the top wall; the air outlets on multiple mounting cavities converge at one point through pipes, and are connected to the heat dissipation system through the air outlet pipes; multiple liquid inlets are provided at the bottom of the mounting cavity; the multiple liquid inlets on the mounting cavity converge at one point through pipes, and the multiple mounting cavities converge through the liquid inlet pipes to connect to the heat dissipation system.

[0008] Furthermore, a wire groove is provided on one side of the mounting part for mounting the wiring harness connected to the battery.

[0009] Furthermore, the heat dissipation system includes a heat dissipation box and a liquid cooling box. The heat dissipation box contains a radiator. The radiator is curved, with one end connected to the air outlet pipe and the other end connected to the liquid inlet pipe. The space between the inner wall of the heat dissipation box and the radiator is filled with a heat exchange medium. The liquid cooling box contains a heat exchange medium, with both ends connected to the heat dissipation box, for carrying away the heat absorbed by the self-cooling gas.

[0010] Furthermore, the bottom of the mounting part is provided with a connecting part for connecting the shock absorption system; the shock absorption system includes a shock absorption shell and multiple shock absorption units; the upper end of the shock absorption shell is open, and the two sides of the connecting part are provided with grooves for embedding into the edge of the opening of the shock absorption shell; the shock absorption unit is disposed between the bottom of the connecting part and the bottom of the shock absorption shell.

[0011] Furthermore, a shock-absorbing pad is provided on the upper end face of the shock-absorbing shell, which is disposed between the shock-absorbing shell and the connecting part.

[0012] Furthermore, the damping unit includes a longitudinal damping seat, a movable block, and a spring; the lower end of the longitudinal damping seat is fixedly connected to the bottom of the damping shell, the movable block is disposed inside the longitudinal damping seat and fits into the longitudinal damping seat; a spring is disposed at the bottom of the movable block; the top of the movable block is fixedly connected to the connecting part; a damping pad is disposed on the inner side wall of the damping shell for horizontal damping of the connecting part.

[0013] The beneficial effects of this invention are as follows: This invention provides a car chassis device with heat dissipation. The porous support structure and coolant configuration accelerate heat transfer efficiency from the battery, increase the coolant evaporation rate, and improve battery cooling. Furthermore, the coolant can be recycled, reducing energy consumption. The shock absorption system absorbs horizontal and longitudinal impacts, preventing battery pack vibration and ensuring safe operation. The shock absorption system and the support structure work together to provide dual protection. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the cooling unit and heat dissipation system of the present invention.

[0017] Figure 3 This is a side view of the present invention.

[0018] Figure 4 This is a schematic diagram of the rear structure of the mounting cavity of the present invention.

[0019] Figure 5 This is a schematic diagram of the internal structure of the mounting cavity of the present invention.

[0020] Figure 6 This is a schematic diagram of the internal structure of the installation compartment of the present invention.

[0021] Figure 7 for Figure 6 Enlarged view of point A in the middle.

[0022] In the figure: 1-Chassis; 2-Mounting section; 21-Mounting compartment; 22-Top cover; 23-Fixed bracket; 24-Air outlet; 25-Liquid inlet; 26-Air outlet pipe; 27-Liquid inlet pipe; 28-Connecting part; 3-Battery; 4-Heat dissipation box; 41-Radiator; 5-Liquid cooling box; 6-Shock-absorbing shell; 7-Shock-absorbing unit; 71-Longitudinal shock-absorbing seat; 72-Moving block; 73-Spring. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see the appendix Figure 1-7 This invention provides a car chassis device with heat dissipation, including a chassis 1, a shock absorption system, and a mounting part 2; a battery 3 and a cooling system are disposed inside the mounting part 2; the shock absorption system is disposed below the mounting part 2 and connected to the chassis 1. The heat dissipation system is connected to one side of the mounting part 2 via a pipe.

[0025] The mounting section 2 includes a mounting compartment 21 and a top cover 22; the top cover 22 is bolted to the mounting compartment 21.

[0026] The mounting compartment 21 has multiple mounting cavities inside; the cooling system includes multiple cooling units; the battery 3 and the cooling unit are installed in the mounting cavity; the battery 3 is mounted in the mounting cavity via a fixing bracket 23; the cooling unit includes coolant and a support structure; the support structure is located between the battery 3 and the mounting cavity; the support structure is porous, and the coolant fills the pores of the support structure; the support structure, located between the battery 3 and the mounting cavity, transfers the heat of the battery 3 to the surrounding coolant, enabling rapid heat radiation and increasing the evaporation rate of the coolant; furthermore, the support structure, located around the battery 3, absorbs the impact of vibrations generated during vehicle movement on the battery 3, preventing the battery 3 from being impacted.

[0027] The coolant flows within the support structure, absorbing the heat emitted from the battery 3 and also conducting it to the support structure surrounding the battery 3. The coolant is then transferred to coolant further away through the support structure, where it evaporates upon heating and accumulates at the top of the mounting cavity.

[0028] The mounting cavity has an inclined top wall, with an air outlet 24 located on one side of the higher part of the top wall. The air outlets 24 on multiple mounting cavities converge at one point via pipes, and are connected to the heat dissipation system via an air outlet pipe 26. Cooling gas from the evaporation of the coolant enters the heat dissipation system through the air outlet 24 and the pipes.

[0029] The bottom of the mounting cavity is provided with multiple liquid inlets 25; all of the multiple liquid inlets 25 on the mounting cavity are connected to one point through pipes, and the multiple mounting cavities are connected to the heat dissipation system through the liquid inlet pipe 27. The cooling gas is cooled into liquid by the heat dissipation system, and then re-enters the mounting cavity through the liquid inlet pipe 27 to absorb the heat of the battery 3.

[0030] In one embodiment of the present invention, the bottom of the mounting cavity is provided with four liquid inlets 25, and the four liquid inlets 25 converge at one point through a pipe; the mounting cavity is provided in four sets, and the pipes of the four sets of mounting cavities converge at one point to connect to the liquid inlet pipe 27.

[0031] A wire groove is also provided on one side of the mounting part 2 for mounting the wire harness connecting the battery 3.

[0032] The heat dissipation system includes a heat dissipation box 4 and a liquid cooling box 5. A radiator 41 is installed inside the heat dissipation box 4. The radiator 41 is curved, with one end connected to the air outlet pipe 26 and the other end connected to the liquid inlet pipe 27. The space between the inner wall of the heat dissipation box 4 and the radiator 41 is filled with a heat exchange medium to condense the cooling gas into a coolant. The curved design increases the contact area between the heat exchange pipe and the cooling gas. The liquid cooling box 5 contains a heat exchange medium and is connected to the heat dissipation box 4 at both ends to remove the heat absorbed by the cooling gas.

[0033] The bottom of the mounting part 2 is provided with a connecting part 28 for connecting the shock absorption system. The shock absorption system includes a shock absorption shell 6 and multiple shock absorption units 7; the upper end of the shock absorption shell 6 is open, and the connecting part 28 is provided with grooves on both sides for embedding into the edge of the opening of the shock absorption shell 6; a shock absorption pad is provided on the upper surface of the shock absorption shell 6, which is located between the shock absorption shell 6 and the connecting part 28.

[0034] Multiple sets of damping units 7 are provided between the bottom of the connecting part 28 and the bottom of the damping shell 6; each damping unit 7 includes a longitudinal damping seat 71, a moving block 72, and a spring 73; the lower end of the longitudinal damping seat 71 is fixedly connected to the bottom of the damping shell 6, and the moving block 72 is disposed inside the longitudinal damping seat 71 and fits into it; a spring 73 is provided at the bottom of the moving block 72; and the top of the moving block 72 is fixedly connected to the connecting part 28. Vibrations generated by the chassis 1 are transmitted to the upper battery pack, and the vibrations can be absorbed by the damping units, reducing the force absorbed by the battery.

[0035] The shock-absorbing housing 6 has shock-absorbing pads on its inner sidewalls for horizontal shock absorption of the connection part 28. The horizontal and longitudinal shock-absorbing structures reduce the impact force on the mounting part, preventing battery pack vibration and ensuring safe use.

[0036] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A car chassis device with heat dissipation, characterized in that, The device includes a chassis (1), a shock absorption system, and a mounting section (2). The mounting section (2) contains a battery (3) and a cooling system. The shock absorption system is located below the mounting section (2) and connected to the chassis (1). One side of the mounting section (2) is connected to a heat dissipation system via a pipe. The mounting section (2) contains multiple mounting cavities. The cooling system includes multiple cooling units. The mounting cavities contain a battery (3) and a cooling unit. The cooling unit includes a coolant and a support structure. The support structure is located between the battery (3) and the mounting cavity. The coolant fills the space between the battery (3) and the mounting cavity.

2. The automotive chassis device with heat dissipation according to claim 1, characterized in that, The mounting part (2) includes a mounting compartment (21) and a top cover (22); the top cover (22) is bolted to the mounting compartment (21).

3. The automotive chassis device with heat dissipation according to claim 1, characterized in that, The battery (3) is mounted in the mounting cavity by a fixing bracket (23).

4. The automotive chassis device with heat dissipation according to claim 1, characterized in that, The support structure is configured to be porous, and the coolant fills the pores of the support structure.

5. A car chassis device with heat dissipation according to claim 1, characterized in that, The top wall of the mounting cavity is inclined, and an air outlet (24) is provided on one side of the high part of the top wall; the air outlets (24) on the multiple mounting cavities are all connected to one place through pipes, and are connected to the heat dissipation system through the air outlet pipe (26); the bottom of the mounting cavity is provided with multiple liquid inlets (25); the multiple liquid inlets (25) on the mounting cavity are all connected to one place through pipes, and the multiple mounting cavities are connected to the heat dissipation system through the liquid inlet pipe (27).

6. A car chassis device with heat dissipation according to claim 1, characterized in that, A wire groove is also provided on one side of the mounting part (2) for setting the wire harness connecting the battery (3).

7. A car chassis device with heat dissipation according to claim 5, characterized in that, The heat dissipation system includes a heat dissipation box (4) and a liquid cooling box (5). The heat dissipation box (4) is equipped with a radiator (41). The radiator (41) is bent, with one end connected to the air outlet pipe (26) and the other end connected to the liquid inlet pipe (27). The space between the inner wall of the heat dissipation box (4) and the radiator (41) is filled with a heat exchange medium. The liquid cooling box (5) is equipped with a heat exchange medium, with both ends connected to the heat dissipation box (4), for carrying away the heat absorbed by the self-cooling gas.

8. A car chassis device with heat dissipation according to claim 1, characterized in that, The mounting part (2) is provided with a connecting part (28) at the bottom for connecting the shock absorption system; the shock absorption system includes a shock absorption shell (6) and multiple shock absorption units (7); the shock absorption shell (6) has an opening at the top, and the connecting part (28) has grooves on both sides for embedding into the edge of the opening of the shock absorption shell (6); the shock absorption unit (7) is located between the bottom of the connecting part (28) and the bottom of the shock absorption shell (6).

9. A car chassis device with heat dissipation according to claim 8, characterized in that, The upper end face of the shock-absorbing shell (6) is provided with a shock-absorbing pad, which is located between the shock-absorbing shell (6) and the connecting part (28).

10. A car chassis device with heat dissipation according to claim 8, characterized in that, The damping unit (7) includes a longitudinal damping seat (71), a moving block (72), and a spring (73); the lower end of the longitudinal damping seat (71) is fixedly connected to the bottom of the damping shell (6), and the moving block (72) is disposed inside the longitudinal damping seat (71) and fits into the longitudinal damping seat (71); the bottom of the moving block (72) is provided with a spring (73); the top of the moving block (72) is fixedly connected to the connecting part (28); the inner side wall of the damping shell (6) is provided with a damping pad for the horizontal damping of the connecting part (28).

Citation Information

Patent Citations

  • New energy automobile chassis

    CN112060937A

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    CN119428130A

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    CN221708802U