A high-strength aluminum profile for lithium batteries in new energy electric vehicles
By designing vibration damping components and heat conduction systems for high-strength aluminum profiles for lithium batteries in new energy electric vehicles, the vibration problem caused by lithium batteries during vehicle vibration has been solved, achieving improvements in safety and heat dissipation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- FUJIAN MINFA ALUMINUM
- Filing Date
- 2022-10-28
- Publication Date
- 2026-06-30
AI Technical Summary
Existing lithium batteries are prone to vibration during vehicle operation, posing a safety hazard. Furthermore, existing shock absorption devices, such as springs, are susceptible to metal fatigue, resulting in unsatisfactory shock absorption performance.
It adopts high-strength aluminum profiles for lithium batteries in new energy electric vehicles and is designed with four shock-absorbing components, including cylinder, slider, guide rod and elastic support rod. Hydraulic balance is achieved through oil passage and heat transfer oil. Combined with heat-conducting column and heat sink, it buffers vibration and removes heat.
It effectively reduces lithium battery vibration, eliminates safety hazards, improves shock absorption, enhances heat dissipation, and reduces assembly difficulty.
Smart Images
Figure CN115832576B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of lithium battery assembly equipment, and in particular to a high-strength aluminum profile for lithium batteries in new energy electric vehicles. Background Technology
[0002] Lithium-ion batteries for automobiles are the power batteries for hybrid and electric vehicles. As the technical performance of nickel-metal hydride batteries, such as energy density and charge / discharge speed, has approached its theoretical limit, lithium-ion batteries, with their advantages of high energy density, large capacity, and no memory effect, have been unanimously recognized by automakers and battery manufacturers. Currently, the focus of research and development in various countries is on lithium-ion batteries, and the continuous development of lithium-ion battery technology constitutes an important part of the future success of lithium-ion batteries.
[0003] Lithium batteries are typically mounted in the chassis of a car, with a compartment inside the chassis for installing them. In current technology, most lithium batteries use a rigid mounting structure, meaning the battery body is rigidly connected to the chassis. Vibrations generated when the car drives over bumpy roads are directly transmitted to the lithium battery, easily causing it to vibrate significantly or even jerk. Lithium batteries subjected to vibration pose a significant safety hazard and affect battery activity. Some automotive lithium batteries use springs as shock absorbers during assembly, but long-term use can lead to metal fatigue, and their shock absorption effect is not ideal. Summary of the Invention
[0004] Therefore, in view of the above problems, the present invention proposes a high-strength aluminum profile for lithium batteries of new energy electric vehicles.
[0005] To address the aforementioned technical problems, the present invention provides the following solution: a high-strength aluminum profile for lithium batteries in new energy electric vehicles, comprising a battery compartment, two oil boxes, and four shock-absorbing components. The four shock-absorbing components are symmetrically arranged in pairs and rectangularly distributed within the battery compartment. Each shock-absorbing component includes a cylinder, a slider, a guide rod, and a first elastic support rod. The cylinder is fixedly installed within the battery compartment, and a piston is slidably installed inside the cylinder. A connecting rod is fixedly installed on the outside of the piston, and the other end of the connecting rod slides through the cylinder and is fixedly connected to the slider. The guide rod is fixed within the battery compartment and arranged laterally. The slider is slidably installed on the guide rod. One end of the first elastic support rod is hinged to the slider, the other end of the upper first elastic support rod is hinged to the first oil box, and the other end of the lower first elastic support rod is hinged to the second oil box.
[0006] The oil box is provided with an oil cavity. The oil cavities in the two oil boxes are connected by multiple side tubes. The multiple side tubes are distributed side by side on the front and rear sides of the two oil boxes so that the two oil boxes and the multiple side tubes together define the installation space of the lithium battery.
[0007] The oil reservoirs in the cylinders of the four shock-absorbing components are connected to the corresponding oil boxes to form an oil passage, which is filled with heat-conducting oil.
[0008] A further improvement is that the battery compartment is an aluminum alloy box, and a cover is provided on the battery compartment. The connection edges between the battery compartment and the cover are all set at the connecting flanges and are locked to the two connecting flanges with bolts.
[0009] A further improvement is that the oil box contains two oil cavities, which are set independently of each other.
[0010] A further improvement is that the side tube consists of rigid bends at both ends and a corrugated expansion tube connected between the two rigid bends.
[0011] A further improvement is that a heat dissipation top plate is fixedly installed on the top of the battery compartment cover, and a heat dissipation bottom plate is fixedly installed on the bottom of the battery compartment. The first oil box is fixedly connected to the heat dissipation top plate through a first heat-conducting column, and the second oil box is fixedly connected to the heat dissipation bottom plate through a second heat-conducting column.
[0012] A further improvement is that it also includes two second elastic support rods, which are respectively set on the left and right sides inside the battery compartment. One end of the second elastic support rod is hinged to the battery compartment, and the other end is hinged to the side pressure plate. The side pressure plate is fixedly connected to the left and right sides of the lithium battery.
[0013] A further improvement is that the first elastic support rod includes two axially sliding and telescopic sections, with a spring connecting the two sections.
[0014] By adopting the aforementioned technical solution, the beneficial effects of the present invention are:
[0015] The high-strength aluminum profile for lithium batteries of new energy electric vehicles of the present invention includes four shock-absorbing components installed in the battery compartment. The cylinder and guide rod of the shock-absorbing components are fixedly installed, and the slider is slidably installed on the guide rod. The slider and the piston in the cylinder are fixed by a connecting rod. The slider is hinged to a first elastic support rod, which is hinged to the oil box on the corresponding side. The oil boxes in the four cylinders are connected through the oil chamber in the oil box to form an oil passage. The oil passage is filled with heat transfer oil, thereby achieving hydraulic balance through heat transfer oil to buffer the vibration of the lithium battery and eliminate safety hazards.
[0016] By designing the side tube connecting the two oil boxes as a rigid bend at both ends and a corrugated expansion tube connected between the two rigid bends, the assembly difficulty of the side tube between the oil boxes is reduced and the assembly efficiency is improved.
[0017] By connecting the two oil boxes to the heat dissipation base plate and heat dissipation top plate respectively through heat conduction columns, the oil acts as hydraulic damping oil and also has a heat conduction effect. During the continuous flow of heat conduction oil caused by vibration, most of the heat generated during the charging and discharging of lithium battery can be carried away and transferred to the external heat dissipation top plate and heat dissipation base plate through the heat conduction columns, thereby increasing the heat dissipation area and ensuring good heat dissipation effect. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of the high-strength aluminum profile for lithium batteries in new energy electric vehicles according to an embodiment of the present invention.
[0019] Figure 2 This is a side sectional view of the oil box in an embodiment of the present invention.
[0020] Figure 3 This is a schematic diagram of the structure of the shock absorption component in an embodiment of the present invention.
[0021] In the diagram: Battery compartment 1, compartment cover 2, heat dissipation top plate 3, heat dissipation bottom plate 4, lithium battery 5, first oil box 6, first oil cavity 61, second oil cavity 62, second oil box 7, third oil cavity 71, fourth oil cavity 72, first shock absorption assembly 8, second shock absorption assembly 9, cylinder 91, oil tank 92, piston 93, connecting rod 94, first elastic support rod 95, slider 96, guide rod 97, fixed seat 98, third shock absorption assembly 10, fourth shock absorption assembly 11, second elastic support rod 12, side pressure plate 13, side tube 14, first heat conduction column 15, second heat conduction column 16, connecting flange 17. Implementation
[0022] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. Example
[0023] refer to Figure 1 , Figure 2 The present invention discloses a high-strength aluminum profile for lithium batteries of new energy electric vehicles, including a battery compartment 1, two oil boxes and four shock-absorbing components. The battery compartment 1 is an aluminum alloy box, and a compartment cover 2 is provided on the battery compartment 1. The connecting edges between the battery compartment 1 and the compartment cover 2 are provided with connecting flanges 17 and are locked to the two connecting flanges 17 by bolts to achieve a fixed connection between the battery compartment 1 and the compartment cover 2. The four shock-absorbing components are arranged symmetrically in pairs and in a rectangular distribution in the battery compartment 1. The first shock-absorbing component 8 and the third shock-absorbing component 10 are located on the left side, and the second shock-absorbing component 9 and the fourth shock-absorbing component 11 are located on the right side. The two oil boxes are arranged symmetrically in the battery compartment 1.
[0024] See Figure 3The four shock absorber components have identical structures. Taking one of the shock absorber components as an example, the shock absorber component includes a cylinder 91, a slider 96, a guide rod 97, and a first elastic support rod 95. The cylinder 91 is fixedly installed inside the battery compartment 1. The cylinder 91 has a cylindrical structure and is arranged laterally. A piston 93 is slidably installed inside the cylinder 91. A connecting rod is fixedly installed on the outside of the piston 93. The other end of the connecting rod slides through the cylinder 91 and is fixedly connected to the slider 96. Two fixed seats 98 are fixedly installed inside the battery compartment 1. The guide rod 97 is fixedly installed between the two fixed seats 98 and is arranged laterally. The slider 96 is slidably installed on the guide rod 97. The first elastic support rod 95 includes two axially sliding telescopic sections. A spring (not shown in the figure) connects the two sections. One end of the first elastic support rod 95 is hinged to the slider 96.
[0025] Among them, the other end of the first elastic support rod 95 in the first damping component 8 and the second damping component 9 located at the top is hinged to the first oil box 6, and the other end of the first elastic support rod 95 in the third damping component 10 and the fourth damping component 11 located at the bottom is hinged to the second oil box 7.
[0026] The two oil boxes have the same structure, and each oil box contains two oil chambers, specifically, as follows: Figure 2 As shown, the first oil box 6 has a first oil cavity 61 and a second oil cavity 62, and the second oil box 7 has a third oil cavity 71 and a fourth oil cavity 72. The first oil cavity 61 and the third oil cavity 71 are connected by multiple side tubes 14, and the second oil cavity 62 and the fourth oil cavity 72 are connected by multiple side tubes 14. The multiple side tubes 14 are arranged side by side on the front and rear sides of the two oil boxes so that the two oil boxes and the multiple side tubes 14 together define the installation space of the lithium battery 5.
[0027] The side tube 14 consists of rigid bends at both ends and a corrugated telescopic tube connected between the two rigid bends. The rigid bends can be locked at the corners of the lithium battery 5 to achieve front-to-back positioning of the lithium battery 5.
[0028] The oil reservoir 92 in the cylinder 91 of the first damping assembly 8 is connected to the first oil chamber 61 of the first oil box 6; the oil reservoir 92 in the cylinder 91 of the second damping assembly 9 is connected to the second oil chamber 62 of the first oil box 6; the oil reservoir 92 in the cylinder 91 of the third damping assembly 10 is connected to the third oil chamber 71 of the second oil box 7; and the oil reservoir 92 in the cylinder 91 of the fourth damping assembly 11 is connected to the fourth oil chamber 72 of the second oil box 7.
[0029] With the above configuration, the cylinder 91 of the first damping component 8, the first oil chamber 61, the third oil chamber 71, and the cylinder 91 of the third damping component 10 are connected in sequence to form an oil passage, and the cylinder 91 of the second damping component 9, the second oil chamber 62, the fourth oil chamber 72, and the cylinder 91 of the fourth damping component 11 are connected in sequence to form another oil passage, and both of the above oil passages are filled with heat transfer oil.
[0030] The lithium battery 5 is fixedly installed between two oil boxes, and the lithium battery 5 is locked to the oil boxes with bolts. Multiple side tubes 14 located on the front and rear sides surround and fix the lithium battery 5. The rigid bends at both ends of the side tubes 14 respectively clamp the front and rear end faces of the lithium battery 5. The corrugated telescopic tube is set to reduce the assembly difficulty between the side tubes 14. That is, if the side tubes 14 are all rigid tubes, since the rigid tubes cannot bend and deform, when assembling the side tubes 14 between the upper and lower oil boxes, the upper, lower, front, back, left and right positions of the oil boxes need to be aligned to ensure that the holes for assembling the side tubes 14 between the two upper oil boxes are completely aligned and symmetrical. The assembly process is cumbersome, difficult, and requires high precision in hole machining. This invention sets the side tubes 14 with rigid bends at both ends and a corrugated telescopic tube in the middle section. The side tubes 14 do not need to be completely aligned between the oil boxes during assembly. The two rigid bends have a large degree of displacement freedom, reducing the assembly difficulty without affecting the fixed position of the lithium battery 5.
[0031] When the car is in motion, vibrations occur, causing the lithium battery 5 and the two oil tanks to vibrate vertically. After passing through the first elastic support rod 95, the slider 96 slides laterally. Specifically, when the lithium battery 5 moves upward, the two upper sliders 96 slide outward and push the pistons 93 of the first damping component 8 and the second damping component 9 outward, creating positive pressure in the oil chamber 92 inside and squeezing out the oil. At the same time, the two lower sliders 96 slide inward and pull the pistons 93 of the third damping component 10 and the fourth damping component 11 inward, creating negative pressure in the oil chamber 92 inside and drawing in the oil. When the lithium battery 5 moves downward, the oil flow direction is exactly the opposite, thus achieving hydraulic balance and providing excellent shock absorption. The oil continuously flows in the oil chambers of the two oil tanks, which can reduce the viscosity of the heat transfer oil and ensure good fluidity.
[0032] In this embodiment, a heat dissipation top plate 3 is fixedly installed on the top of the battery compartment cover 2, and a heat dissipation bottom plate 4 is fixedly installed on the bottom of the battery compartment 1. The first oil box 6 is fixedly connected to the heat dissipation top plate 3 through a first heat-conducting column 15, and the second oil box 7 is fixedly connected to the heat dissipation bottom plate 4 through a second heat-conducting column 16. The heat-conducting oil acts as a hydraulic damping fluid and also has a heat-conducting effect. During the continuous flow of the heat-conducting oil caused by vibration, it can carry away most of the heat generated during the charging and discharging of the lithium battery 5, and transfer it to the external heat dissipation top plate 3 and heat dissipation bottom plate 4 through the heat-conducting columns, thereby increasing the heat dissipation area and ensuring a good heat dissipation effect.
[0033] In this embodiment, preferably, to facilitate lateral positioning of the lithium battery 5, two second elastic support rods 12 are also included. The two second elastic support rods 12 are respectively disposed on the left and right sides inside the battery compartment 1. One end of the second elastic support rod 12 is hinged to the battery compartment 1, and the other end is hinged to the side pressure plate 13. The side pressure plate 13 is fixedly connected to the left and right sides of the lithium battery 5. This achieves lateral positioning of the lithium battery 5.
[0034] Any modifications or variations made using this invention are within the scope of the patent claims made by this invention, and are not limited to those disclosed in the embodiments.
Claims
1. A high-strength aluminum profile for lithium batteries in new energy electric vehicles, characterized in that: The device includes a battery compartment, two oil boxes, and four shock-absorbing components. The four shock-absorbing components are arranged symmetrically in pairs in a rectangular pattern within the battery compartment. Each shock-absorbing component includes a cylinder, a slider, a guide rod, and a first elastic support rod. The cylinder is fixedly installed within the battery compartment, and a piston is slidably installed inside the cylinder. A connecting rod is fixedly installed on the outside of the piston, and the other end of the connecting rod slides out of the cylinder and is fixedly connected to the slider. The guide rod is fixed within the battery compartment and arranged laterally. The slider is slidably installed on the guide rod. One end of the first elastic support rod is hinged to the slider, the other end of the upper first elastic support rod is hinged to the first oil box, and the other end of the lower first elastic support rod is hinged to the second oil box. The oil box is provided with an oil cavity. The oil cavities in the two oil boxes are connected by multiple side tubes. The multiple side tubes are distributed side by side on the front and rear sides of the two oil boxes so that the two oil boxes and the multiple side tubes together define the installation space of the lithium battery. The oil reservoirs in the cylinders of the four shock-absorbing components are connected to the corresponding oil boxes on the sides to form an oil passage, which is filled with heat transfer oil.
2. The high-strength aluminum profile for lithium batteries in new energy electric vehicles according to claim 1, characterized in that: The battery compartment is an aluminum alloy box with a cover. The connection edges between the battery compartment and the cover are all set with connecting flanges and are locked to the two connecting flanges with bolts.
3. The high-strength aluminum profile for lithium batteries in new energy electric vehicles according to claim 1, characterized in that: The oil box contains two oil chambers, which are set independently of each other.
4. The high-strength aluminum profile for lithium batteries in new energy electric vehicles according to claim 1, characterized in that: The side pipe consists of rigid bends at both ends and a corrugated expansion joint connecting the two rigid bends.
5. The high-strength aluminum profile for lithium batteries in new energy electric vehicles according to claim 2, characterized in that: A heat dissipation top plate is fixedly installed on the top of the battery compartment cover, and a heat dissipation bottom plate is fixedly installed on the bottom of the battery compartment. The first oil box is fixedly connected to the heat dissipation top plate through a first heat-conducting column, and the second oil box is fixedly connected to the heat dissipation bottom plate through a second heat-conducting column.
6. The high-strength aluminum profile for lithium batteries in new energy electric vehicles according to claim 1, characterized in that: It also includes two second elastic support rods, which are respectively arranged on the left and right sides inside the battery compartment. One end of the second elastic support rod is hinged to the battery compartment, and the other end is hinged to the side pressure plate. The side pressure plate is fixedly connected to the left and right sides of the lithium battery.
7. The high-strength aluminum profile for lithium batteries in new energy electric vehicles according to claim 1, characterized in that: The first elastic support rod includes two axially sliding and telescopic sections, with a spring connecting the two sections.