Lithium battery with protective shell structure
By introducing heat dissipation holes, elastic parts, corner plates, heat conduction plates and heat dissipation fins into the protective shell of the lithium battery, the high-temperature safety hazards and insufficient heat dissipation caused by the sealing shell are solved, and efficient heat dissipation and stable operation of the lithium battery are achieved.
Patent Information
- Application Number
- CN202422265311.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-09-18
AI Technical Summary
The existing lithium battery protective shell enclosure structure increases the probability of safety accidents at high temperatures and cannot effectively dissipate heat.
A shell with heat dissipation holes is designed, combining elastic members and angle plates to increase buffering and stability, and improving heat dissipation efficiency through thermal conduction plates and heat dissipation fins. At the same time, a third elastic members and support plates are used to reduce shaking and vibration, and a built-in reinforcement plate is equipped to enhance structural strength.
It improves the heat dissipation efficiency and stability of lithium batteries, reduces damage caused by collision and shaking, enhances safety and structural strength, and ensures the safety and stability of lithium batteries during the driving of electric vehicles.
Smart Images
Figure CN223273356U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of electric vehicles, and in particular to a lithium battery with a protective shell structure. Background Art
[0002] Lithium batteries are lightweight, have high energy density, and charge quickly, making them widely used as power batteries for electric vehicles. When an electric vehicle encounters potholes on the road while driving, the electric vehicle frame vibrates. The lithium batteries fixed on the electric vehicle frame will rub against or even collide with the battery compartment or adjacent lithium batteries. Therefore, protective casings are usually used to wrap the lithium batteries.
[0003] In order to ensure sufficient structural strength, the existing lithium battery protective shell is usually a closed shell, and the inner wall of the protective shell is closely fitted to the peripheral wall of the lithium battery.
[0004] The above-mentioned existing technical solutions have the following defects: lithium batteries generate a large amount of heat when in use, and the closed lithium battery protective shell easily increases the probability of safety accidents occurring under high temperature. Utility Model Content
[0005] In order to increase the heat dissipation efficiency of a lithium battery protective shell, the present application provides a lithium battery with a protective shell structure.
[0006] The above technical objectives of this application are achieved through the following technical solutions:
[0007] A lithium battery with a protective shell structure includes a battery body, a shell is provided on the outside of the battery body, and the side wall of the shell is provided with a heat dissipation hole. A first elastic member is fixed in the shell, and an angled plate is fixed to the other side of the first elastic member. The inner edge of the right-angle opening of the angled plate is in contact with the edge of the battery body, and a second elastic member is fixed to the outer plate surface. A plurality of second elastic members are provided, and one end of the second elastic member is fixed to the shell.
[0008] By adopting the above technical solution, it can be ensured that the battery body will not collide with the shell. The second elastic member can increase the stability of the angled plate supporting the battery body, while increasing the buffering effect on the battery body. The heat dissipation holes opened on the side wall of the shell can increase the heat dissipation effect of the shell. The battery body and the shell are spaced apart by the first elastic member and the angled plate, which increases the air circulation space in the shell and ensures the safety and stability of the lithium battery.
[0009] Optionally, a movable opening is opened on the shell, a heat conducting plate is fixedly connected to the side wall of the battery body, and the top of the heat conducting plate extends out of the movable opening and is fixedly connected to a heat dissipation plate.
[0010] By adopting the above technical solution, the heat conducting plate can conduct the heat generated by the battery body to the heat dissipation plate, thereby increasing the heat dissipation efficiency of the lithium battery.
[0011] Optionally, heat dissipation fins are integrally formed on the heat dissipation plate, and the length direction of the heat dissipation fins is perpendicular to the length direction of the battery body.
[0012] By adopting the above technical solution, the heat dissipation fins can increase the heat dissipation efficiency of the heat sink. When the lithium battery is installed on the electric vehicle, the length direction of the heat dissipation fins is the same as the air flow direction in the battery compartment of the electric vehicle, which can increase the heat dissipation efficiency of the lithium battery.
[0013] Optionally, a third elastic member is provided in the shell, and a plurality of the third elastic members are arranged at intervals along the bottom surface of the shell, and a support plate is provided on the third elastic member.
[0014] By adopting the above technical solution, the third elastic member can reduce the amplitude of the battery body shaking up and down in the shell, and at the same time can absorb the kinetic energy of the battery body when it falls.
[0015] Optionally, a plurality of third elastic members with the same length direction form a group, and at least two groups of third elastic members with different length directions are provided on the bottom surface of the shell.
[0016] By adopting the above technical solution, multiple groups of third elastic members are arranged perpendicular to each other in their length directions, which can increase the friction between the support plate and the bottom surface of the battery body, so that when the electric vehicle is driving on a bumpy road in a complex environment, the shell can reduce the vibration of the battery body.
[0017] Optionally, a reinforcing plate is fixedly connected to the inner side wall of the shell.
[0018] By adopting the above technical solution, the reinforcing plate can increase the overall structural strength of the shell, and can buffer the space between the battery body and the shell when subjected to a large impact, thereby reducing damage to the battery body caused by the impact.
[0019] Optionally, the heat dissipation holes extend to the plate surface of the reinforcement plate.
[0020] By adopting the above technical solution, the air in the shell is guaranteed to circulate.
[0021] Optionally, the shell is provided with electrode holes, and there are at least two electrode holes. Washers are provided at the hole openings on one side of the electrode holes and the hole openings on the side of the movable port, and the washers are located between the battery body and the shell.
[0022] By adopting the above technical solution, the friction between the top surface of the battery body and the top of the shell can be reduced, and the collision between the battery body and the top of the shell when moving up and down in the shell can be reduced, thereby ensuring the safety of the lithium battery.
[0023] In summary, this application has the following technical effects:
[0024] 1. The housing, heat dissipation holes, first elastic member, and angled plate enhance the housing's cushioning effect on the battery body. The heat dissipation holes enhance the housing's heat dissipation. The first elastic member and angled plate separate the battery body from the housing, increasing air circulation space within the housing and ensuring the safety and stability of the lithium battery.
[0025] 2. By setting up a heat conduction plate, a heat sink and heat sink fins, the heat generated by the battery body can be transferred to the heat sink. When the lithium battery is installed on the electric vehicle, the length direction of the heat sink fins is the same as the direction of air flow in the battery compartment of the electric vehicle, which can increase the heat dissipation efficiency of the lithium battery;
[0026] 3. By providing a third elastic member and a support plate, the amplitude of the battery body shaking up and down in the shell can be reduced, and the kinetic energy of the battery body when it falls can be absorbed. When the electric vehicle is driving on a bumpy road in a complex environment, the shell can reduce the vibration of the battery body. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is the appearance structure diagram of this application;
[0028] Figure 2 It is a horizontal cross-sectional structural diagram of the present application;
[0029] Figure 3 This is the structural diagram after the application is opened.
[0030] Explanation of the accompanying drawings: 1. Battery body; 2. Shell; 21. Heat dissipation hole; 22. Movable port; 23. Electrode hole; 3. First elastic member; 4. Angular plate; 5. Second elastic member; 6. Heat conduction plate; 7. Heat dissipation plate; 71. Heat dissipation fin; 8. Third elastic member; 9. Support plate; 10. Reinforcement plate; 11. Gasket. DETAILED DESCRIPTION
[0031] The present application is further described in detail below with reference to the accompanying drawings.
[0032] The present application discloses a lithium battery with a protective shell structure, referring to Figure 1 and Figure 2, it includes a battery body 1 in the form of a rectangular parallelepiped, a shell 2 is sleeved on the outside of the battery body 1, the shell 2 is in the form of a rectangular parallelepiped, and the side walls on both sides of the length direction of the shell 2 are provided with heat dissipation holes 21, and a plurality of heat dissipation holes 21 are spaced apart. The connections between the side walls in the shell 2 are fixed with a first elastic member 3. In this embodiment, the first elastic member 3 is a strip rubber plate, one side of the first elastic member 3 in the length direction is fixed to the shell 2, and the other side is fixed with an angular plate 4 with a right-angled end face. The web of the angular plate 4 fits the edge of the battery body 1, and a second elastic member 5 is welded to the plate surface of the angular plate 4 close to the shell 2. In this embodiment, the second elastic member 5 is a spring, and a plurality of second elastic members 5 are spaced apart along the length direction of the angular plate 4. One end of the second elastic member 5 is connected to the angular plate 4, and the other end is fixed to the shell 2, and the length direction of the second elastic member 5 is perpendicular to the plate surface connected to the angular plate 4 or the shell 2.
[0033] When using the lithium battery with a protective shell structure, the shell 2 can wrap the battery body 1 and protect the side walls of the lithium battery. When the electric vehicle is driving, the battery body 1 will swing in the shell 2. At this time, the first elastic member 3 can firmly support the four sides of the side wall of the battery body 1. Under the elastic force of the first elastic member 3, as the battery body 1 moves, it is ensured that the battery body 1 will not collide with the shell 2. The second elastic member 5 can increase the stability of the support of the battery body 1 by the angled plate 4, and at the same time increase the buffering effect of the battery body 1. The heat dissipation holes 21 opened on the side wall of the shell 2 can increase the heat dissipation effect of the shell 2. The battery body 1 and the shell 2 are spaced apart by the first elastic member 3 and the angled plate 4, thereby increasing the air circulation space in the shell 2 and ensuring the safety and stability of the lithium battery.
[0034] Reference Figure 1 and Figure 2 A movable opening 22 is provided on the top surface of the shell 2. The movable opening 22 is strip-shaped and has two strips. The two movable openings 22 are respectively provided on both sides of the length direction of the shell 2 close to the side walls of the shell 2. The side walls on both sides of the length direction of the battery body 1 are bonded with heat conducting plates 6. The plate surface of the heat conducting plates 6 is in contact with the end surface of the battery body 1. The tops of the two heat conducting plates 6 extend out of the movable opening 22 above them and are welded with a heat dissipation plate 7. The plate surface of the heat dissipation plate 7 is integrally formed with heat dissipation fins 71. The length direction of the heat dissipation fins 71 is perpendicular to the length direction of the battery body 1.
[0035] When using the lithium battery with the protective shell structure, the heat conducting plate 6 can conduct the heat generated by the battery body 1 to the heat sink 7. The heat dissipation fins 71 on the heat sink 7 can increase the heat dissipation efficiency of the heat sink 7. When the lithium battery is installed on the electric vehicle, the length direction of the heat dissipation fins 71 is the same as the air flow direction in the battery compartment of the electric vehicle, which can increase the heat dissipation efficiency of the lithium battery.
[0036] Reference Figure 3A third elastic member 8 is disposed on the bottom surface of the housing 2. In this embodiment, the third elastic member 8 is a rubber tube. Multiple third elastic members 8 are provided and spaced apart along the bottom surface of the housing 2. Multiple third elastic members 8 of the same length and spaced apart in sequence constitute a group. Four groups of third elastic members 8 with different lengths are disposed on the bottom surface of the housing 2. The length of each group of third elastic members 8 is perpendicular to the lengths of the two adjacent groups of third elastic members 8. A support plate 9 is fixedly attached to the side of the third elastic member 8 facing away from the housing 2. The support plate 9 is a strip-shaped plate having the same length as the third elastic member 8. The length of the support plate 9 is equal to the length of the third elastic member 8 to which it is connected, and the width of the support plate 9 is slightly smaller than the width of the third elastic member 8 to which it is connected.
[0037] When using the lithium battery with a protective shell structure, the third elastic member 8 can reduce the amplitude of the battery body 1 shaking up and down in the shell 2, and at the same time can absorb the kinetic energy of the battery body 1 when it falls. Multiple groups of third elastic members 8 are arranged perpendicular to each other in length direction, which can increase the friction between the support plate 9 and the bottom surface of the battery body 1, so that when the electric vehicle is driving on a bumpy road with a complex environment, the shell 2 can reduce the vibration of the battery body 1.
[0038] Reference Figure 2 and Figure 3 A reinforcing plate 10 is welded to the side wall inside the shell 2. There are four reinforcing plates 10 and they are respectively arranged on the four side walls of the inner wall of the shell 2. The reinforcing plate 10 is a strip plate and its length direction is perpendicular to the height direction of the shell 2. The plate surfaces on both sides of the length direction of the reinforcing plate 10 are bent toward the shell 2 and the side edges on both sides of the length direction of the reinforcing plate 10 are welded to the shell 2. The heat dissipation holes 21 extend to the plate surface of the reinforcing plate 10 facing away from the shell.
[0039] When using the lithium battery with a protective shell structure, the heat dissipation hole 21 is connected to the side of the reinforcing plate 10 facing away from the shell 2, ensuring that the air in the shell 2 can circulate. The reinforcing plate 10 can increase the overall structural strength of the shell 2. When subjected to a large impact, it can buffer the battery body 1 and the shell 2, reducing the damage to the battery body 1 caused by the impact.
[0040] Reference Figure 1 An electrode hole 23 for connecting the electrodes on the battery body 1 is provided on the top surface of the shell 2. There are two electrode holes 23 and they are respectively located above the positive pole and the negative pole of the battery body 1. A gasket 11 is provided at the opening of the electrode hole 23 facing the battery body 1 and the opening of the movable port 22 facing the battery body 1. The gasket 11 is located between the battery body 1 and the shell 2.
[0041] When using the lithium battery with the protective shell structure, the gasket 11 can reduce the friction between the top surface of the battery body 1 and the top of the shell 2, and at the same time can reduce the collision between the battery body 1 and the top of the shell 2 when moving up and down in the shell 2, thereby ensuring the safety of the lithium battery.
[0042] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.
Claims
1. A lithium battery with a protective housing structure, characterized in that: A lithium battery with a protective shell structure includes a battery body (1), a shell (2) is sleeved on the outside of the battery body (1), a heat dissipation hole (21) is opened on the side wall of the shell (2), a first elastic member (3) is fixedly connected inside the shell (2), an angled plate (4) is fixedly connected to the other side of the first elastic member (3), the inner edge of the right-angle opening of the angled plate (4) is in contact with the edge of the battery body (1), a second elastic member (5) is fixedly connected to the outer plate surface of the angled plate (4), a plurality of the second elastic members (5) are provided, and one end of the second elastic member is fixedly connected to the shell (2).
2. The lithium battery with a protective shell structure according to claim 1, characterized in that: A movable opening (22) is provided on the shell (2), a heat conducting plate (6) is fixedly connected to the side wall of the battery body (1), and the top of the heat conducting plate (6) extends out of the movable opening (22) and is fixedly connected to a heat dissipation plate (7).
3. The lithium battery with a protective shell structure according to claim 2, characterized in that: The heat dissipation plate (7) is integrally formed with heat dissipation fins (71), and the length direction of the heat dissipation fins (71) is perpendicular to the length direction of the battery body (1).
4. The lithium battery with a protective shell structure according to claim 1, characterized in that: A third elastic member (8) is provided in the shell (2), and a plurality of the third elastic members (8) are arranged at intervals along the bottom surface of the shell (2), and a support plate (9) is provided on the third elastic member (8).
5. The lithium battery with a protective shell structure according to claim 4, characterized in that: A plurality of third elastic members (8) with the same length direction form a group, and at least two groups of third elastic members (8) with different length directions are provided on the bottom surface of the housing (2).
6. The lithium battery with a protective shell structure according to claim 5, characterized in that: A reinforcing plate (10) is fixedly connected to the inner side wall of the shell (2).
7. The lithium battery with a protective shell structure according to claim 6, characterized in that: The heat dissipation holes (21) extend to the plate surface of the reinforcing plate (10).
8. The lithium battery with a protective shell structure according to claim 2, characterized in that: The shell (2) is provided with electrode holes (23), and at least two electrode holes (23) are provided. Gaskets (11) are provided at the openings on one side of the electrode holes (23) and the openings on one side of the movable opening (22). The gaskets (11) are located between the battery body (1) and the shell (2).