A type of aluminum casing for power batteries

Abstract

This utility model discloses an aluminum casing for a power battery, comprising a fixed base plate, fixed mounting holes, an inner protective shell, a mounting groove, a second fixing bolt, and a mounting base. The fixed mounting holes are evenly distributed through both sides of the fixed base plate. The mounting base is fixedly mounted on the upper end of the fixed base plate. The bottom end of the inner protective shell is secured to the mounting base. The mounting groove is formed on both sides of the bottom end of the inner protective shell. The second fixing bolt is evenly threaded into the inner protective shell and the mounting base. This utility model, through a double-layer aluminum casing, active pressure relief, efficient heat dissipation, and modular design, systematically solves the safety, thermal management, and maintenance problems of existing power battery aluminum casings, significantly improving the reliability, safety, and maintainability of the battery system.

Description

Technical Field

[0001] This utility model relates to the field of power battery protection technology, specifically to an aluminum casing for a power battery. Background Technology

[0002] Power batteries are core components in new energy vehicles, energy storage systems, and consumer electronics. However, the casings of existing power batteries (e.g., aluminum casings) are prone to expansion or explosion due to the large amount of gas produced by the battery when subjected to external impacts, posing safety hazards. Therefore, a device is needed to solve the above problems. Utility Model Content

[0003] The purpose of this utility model is to provide an aluminum casing for a power battery to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a power battery aluminum shell, comprising a fixed base plate, fixed mounting holes, an inner protective shell, a mounting groove, a second fixing bolt, and a mounting base. The fixed mounting holes are evenly distributed through both sides of the fixed base plate. The mounting base is fixedly mounted on the upper end of the fixed base plate. The bottom end of the inner protective shell is secured to the mounting base. The mounting groove is formed on both sides of the bottom end of the inner protective shell. The second fixing bolt is evenly threaded into the inner protective shell and the mounting base, and the outer end of the second fixing bolt is located inside the mounting groove.

[0005] Preferably, a pressure relief and discharge hole is uniformly opened through one side of the inner protective shell.

[0006] Preferably, an outer protective shell is provided outside the inner protective shell, and a bottom connecting plate is fixedly installed at the bottom end of the outer protective shell, and the bottom connecting plate is fixedly connected to the fixed base plate by a first fixing bolt.

[0007] Preferably, a separation protection plate is symmetrically provided on one side of the outer protective shell, and at least part of the edge of the separation protection plate is connected to the outer protective shell.

[0008] Preferably, the upper end of the outer protective shell is fixedly installed with an upper cover by bolts.

[0009] Preferably, the outer protective shell and the inner protective shell are fitted together.

[0010] Preferably, heat dissipation protective strips are uniformly fixed on the outer protective shell.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This utility model features an inner protective shell that directly encloses the battery, while an outer protective shell forms an external protective layer. The two-layer aluminum shell structure effectively resists mechanical impact and external damage, reducing the risk of thermal runaway. Pressure relief holes are provided on the side walls of the inner protective shell to quickly release internal pressure when the battery abnormally generates gas, preventing shell expansion or explosion. A fixed separation plate is installed on the side of the outer protective shell; when the internal pressure exceeds the limit, the protective plate automatically detaches to form a pressure relief channel, providing double protection against pressure buildup. Furthermore, both the inner and outer protective shells are made of aluminum, utilizing its high thermal conductivity to quickly conduct battery heat. The bottom connecting plate of the outer protective shell is fixed to the fixed base plate by a heat dissipation strip, increasing the heat dissipation area and accelerating the transfer of heat to the external environment, reducing the risk of thermal runaway. In addition, the inner protective shell is connected to the mounting base by a clamp and a second fixing bolt. The mounting groove design hides the bolt ends, ensuring connection strength while facilitating disassembly. The outer protective shell is fixed by the bottom connecting plate and the first fixing bolt, and the top cover is sealed with bolts. All components can be disassembled independently, allowing for internal battery inspection without damaging the shell.

[0013] Therefore, this utility model systematically solves the safety, thermal management and maintenance problems of existing power battery aluminum shells through double-layer aluminum shell, active pressure relief, efficient heat dissipation and modular design, and significantly improves the reliability, safety and maintainability of the battery system. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main three-dimensional structure of the present utility model;

[0015] Figure 2 This is a schematic diagram of the split structure of the upper part of the main body in this utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the main body in this utility model.

[0017] In the diagram: 1-Upper cover, 2-Bottom connecting plate, 3-Heat dissipation protective strip, 4-First fixing bolt, 5-Outer protective shell, 6-Fixed base plate, 7-Separation protection plate, 8-Fixed mounting hole, 9-Inner protective shell, 10-Pressure relief hole, 11-Mounting groove, 12-Second fixing bolt, 13-Mounting base. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-3The present invention provides an embodiment of a power battery aluminum shell, comprising a fixed base plate 6, fixed mounting holes 8, an inner protective shell 9, a mounting groove 11, a second fixing bolt 12, and a mounting base 13. The fixed mounting holes 8 are evenly provided through both sides of the fixed base plate 6. The mounting base 13 is fixedly installed on the upper end of the fixed base plate 6. The bottom end of the inner protective shell 9 is secured to the mounting base 13. The mounting groove 11 is provided on both sides of the bottom end of the inner protective shell 9. The second fixing bolt 12 is evenly threaded into the inner protective shell 9 and the mounting base 13, and the outer end of the second fixing bolt 12 is located inside the mounting groove 11.

[0020] The inner protective shell 9 has pressure relief and discharge holes 10 evenly distributed throughout one side.

[0021] An outer protective shell 5 is provided outside the inner protective shell 9. A bottom connecting plate 2 is fixedly installed at the bottom end of the outer protective shell 5, and the bottom connecting plate 2 is fixedly connected to the fixed base plate 6 by the first fixing bolt 4.

[0022] A separation protection plate 7 is symmetrically arranged on one side of the outer protective shell 5, and at least part of the edge of the separation protection plate 7 is connected to the outer protective shell 5, so that the separation protection plate 7 can be separated under pressure. For example, several contact points on the edge of the separation protection plate 7 are connected to the outer protective shell 5, and the number of contact points can be three.

[0023] The upper end of the outer protective shell 5 is fixed with the upper cover 1 by bolts, which serves as a seal and barrier.

[0024] The outer protective shell 5 and the inner protective shell 9 are bonded together, which allows for rapid heat conduction and dissipation.

[0025] Heat dissipation protective strips 3 are evenly fixed on the outer protective shell 5.

[0026] Working principle: During use, the battery can be fixedly mounted on the base plate 6. Then, the inner protective shell 9 is placed over the battery, and the second fixing bolt 12 is inserted between the inner protective shell 9 and the mounting base 13, so that the inner protective shell 9 is firmly mounted on the mounting base 13 and covers the outside of the battery, providing full protection. After the inner protective shell 9 is fixed, the outer protective shell 5 is placed over the inner protective shell 9. Then, the bottom connecting plate 2 is fixed to the base plate 6 by the first fixing bolt 4, so that the outer protective shell 5 is quickly fixed to the base plate 6. At this time, both the inner protective shell 9 and the outer protective shell 5 stably cover the outside of the battery, achieving two levels of protection. Finally, the upper cover 1 is fixed to the outer protective shell. The upper part 5 is provided with wiring slots on the upper cover 1. When the battery spontaneously combusts during use, the pressure relief hole 10 can release energy. The energy inside the inner protective shell 9 and the outer protective shell 5 will exert a pushing force on the separation protection plate 7, so that the separation protection plate 7 separates from the outer protective shell 5. This allows the gas generated by the battery to be discharged to the external environment, thereby achieving the function of pressure relief and preventing excessive pressure from causing an explosion. In addition, the outer protective shell 5 and the inner protective shell 9 are made of aluminum. The heat dissipation protection strips 3 are evenly distributed on the outside of the outer protective shell 5, which can achieve rapid heat conduction and heat dissipation. Furthermore, the outer protective shell 5 and the inner protective shell 9 are easy to disassemble, making it convenient to inspect and replace the internal battery.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A power battery aluminum casing, comprising an outer protective shell (5), a fixed base plate (6), a fixed mounting hole (8), an inner protective shell (9), a mounting groove (11), a second fixing bolt (12), and a mounting base (13), characterized in that: The fixed mounting holes (8) are evenly opened through both sides of the fixed base plate (6). The mounting base (13) is fixedly installed on the upper end of the fixed base plate (6). The bottom end of the inner protective shell (9) is fixed on the mounting base (13). The mounting groove (11) is opened on both sides of the bottom end of the inner protective shell (9). The second fixing bolt (12) is evenly threaded into the inner protective shell (9) and the mounting base (13). The outer end of the second fixing bolt (12) is located inside the mounting groove (11). A pressure relief and discharge hole (10) is evenly opened through one side of the inner protective shell (9). An outer protective shell (5) is provided outside the inner protective shell (9). A bottom connecting plate (2) is fixedly installed at the bottom end of the outer protective shell (5). The bottom connecting plate (2) is fixedly connected to the fixed base plate (6) by the first fixing bolt (4).

2. The aluminum casing for a power battery according to claim 1, characterized in that: A separation protection plate (7) is symmetrically provided on one side of the outer protective shell (5), and at least part of the edge of the separation protection plate (7) is connected to the outer protective shell (5).

3. The aluminum casing for a power battery according to claim 2, characterized in that: The upper end of the outer protective shell (5) is fixedly installed with an upper cover (1) by bolts.

4. The aluminum casing for a power battery according to claim 3, characterized in that: The outer protective shell (5) is attached to the inner protective shell (9).

5. The aluminum casing for a power battery according to claim 4, characterized in that: Heat dissipation protective strips (3) are uniformly fixed on the outer protective shell (5).

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