Connecting structure of aluminum alloy battery box body

Abstract

The invention relates to the technical field of new energy automobile battery packs, and discloses an aluminum alloy battery box connecting structure which comprises a lower shell and an upper shell, the front face and the back face of the lower shell are fixedly connected with lower mounting bases, the front face and the back face of the upper shell are fixedly connected with upper mounting bases, and the lower mounting bases are fixedly connected with the upper mounting bases. Four fixing bolts are connected to the upper surfaces of the two upper mounting seats in a threaded mode, each fixing bolt sequentially penetrates through the corresponding upper mounting seat and the corresponding lower mounting seat and extends to the bottom face of the corresponding lower mounting seat, and the side faces, close to each other, of the lower shell and the upper shell are jointly and fixedly connected with a sealing gasket; through the design of the upper mounting base, the lower mounting base and the fixing bolts, the upper shell and the lower shell are stably connected, a closed space with a stable structure is formed, various impacts and vibrations possibly occurring in the running process of a vehicle can be effectively borne, and the internal battery module is protected against damage.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle battery pack technology, specifically to a connection structure for an aluminum alloy battery box. Background Technology

[0002] The aluminum alloy battery box connection structure is a design used to connect the various parts of the battery box. It bears the important responsibility of ensuring the overall stability, safety, and ease of maintenance of the battery box. This structure is commonly used in various battery applications, such as electric vehicles, energy storage systems, and communication base stations. Aluminum alloy battery boxes are lightweight, high-strength, and corrosion-resistant, and therefore widely used in battery systems.

[0003] With the rapid development of new energy vehicles, the structural design and safety performance of battery packs are receiving increasing attention. Although traditional battery box connection structures can meet basic protection requirements, they have certain shortcomings such as weak connections and poor sealing performance. Therefore, it is necessary to design a new aluminum alloy battery box connection structure to meet the high safety and stability requirements of new energy vehicles during use, which has extremely high research and application value. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a connection structure for an aluminum alloy battery box that solves the problems of weak connections and poor sealing performance associated with traditional battery box connection structures.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: It includes a lower housing and an upper housing. A lower mounting base is fixedly connected to both the front and back sides of the lower housing. An upper mounting base is fixedly connected to both the front and back sides of the upper housing. Four fixing bolts are threaded onto the upper surfaces of both upper mounting bases. Each fixing bolt passes through both the upper and lower mounting bases and extends to the bottom surface of the lower mounting base. A sealing gasket is fixedly connected to the side of the lower and upper housings that are close to each other. An O-ring is fixedly connected to the side of the lower and upper housings that are far apart from each other. A connecting flange is fixedly connected to the side of each O-ring that is far apart from each other. Five connecting bolts are threaded onto the side of each connecting flange that is far apart from each other. A heat sink is fixedly connected to the left side of the upper housing. A cross-shaped partition is fixedly connected to the inner bottom wall of the lower housing. A module is fixedly connected to the inner bottom wall of the lower housing. A positioning block is fixedly connected to the side of each module that is close to each other. A positioning pin is fixedly embedded in the inner bottom wall of each module.

[0006] As a preferred embodiment of the present invention, two lifting rings are provided above the upper housing, and the two lifting rings are fixedly installed on the upper surface of the upper housing.

[0007] As a preferred embodiment of the present invention, wire grooves are provided on the front and back sides of the lower and upper housings, and anti-slip patterns are provided on the inner wall of each wire groove.

[0008] As a preferred embodiment of the present invention, the sealing gasket is made of rubber, a drive motor is fixedly connected to the right side wall of the heat sink, and a cooling fan is fixedly connected to the output end of the drive motor.

[0009] As a preferred embodiment of the present invention, a sealing ring is provided between the heat sink and the upper housing, a heat dissipation groove is provided on the left side of the heat sink, and a ventilation groove is provided on the right side of the heat sink.

[0010] As a preferred embodiment of the present invention, symmetrical temperature sensors are fixedly connected to each of the two sides of the upper housing that are close to each other.

[0011] Compared with the prior art, the present invention provides a connection structure for an aluminum alloy battery box, which has the following advantages: 1. In this invention, the upper housing is placed on the lower housing, and then fixed to the lower housing using fixing bolts via upper and lower mounting seats. An airtight seal is established between the upper and lower housings using a sealing gasket. The design of the upper and lower mounting seats and fixing bolts ensures a stable connection between the upper and lower housings, forming a structurally stable closed space that can effectively withstand various impacts and vibrations that may occur during vehicle operation, protecting the internal battery module from damage. The airtight seal established between the upper and lower housings using a sealing gasket greatly improves the dustproof and waterproof performance of the battery box, preventing moisture and foreign objects from entering and protecting the battery pack from environmental influences.

[0012] 2. This invention uses connecting bolts to pass through connecting flanges and connect to the lower and upper housings. The connecting flanges are used to connect the external components of the lower and upper housings. Using this connection method, the lower and upper housings can be firmly fixed together to form a high-strength structure, which improves the overall stability and shock resistance of the battery box. This ensures that the batteries inside the battery box will not shift due to vehicle bumps during vehicle operation. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a left-view three-dimensional structural diagram of the present invention; Figure 3 In this invention Figure 2 Enlarged view of point A in the middle; Figure 4 This is a top-down structural diagram of the present invention.

[0014] The components include: 1. Lower housing; 2. Upper housing; 3. Wire channel; 4. Fixing bolt; 5. Lower mounting base; 6. Upper mounting base; 7. Sealing gasket; 8. Lifting ring; 9. Connecting flange; 10. Connecting bolt; 11. Heat dissipation channel; 12. Drive motor; 13. Cooling fan; 14. Positioning block; 15. Cross partition; 16. Heat sink cover; 17. Temperature sensor; 18. Module; 19. Positioning pin; 20. O-ring. Detailed Implementation

[0015] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0016] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0018] Please see Figure 1-4A connection structure for an aluminum alloy battery box includes a lower housing 1 and an upper housing 2. Lower mounting seats 5 are fixedly connected to both the front and back of the lower housing 1. Upper mounting seats 6 are fixedly connected to both the front and back of the upper housing 2. Four fixing bolts 4 are threaded onto the upper surfaces of both upper mounting seats 6. Each fixing bolt 4 passes through both the upper mounting seat 6 and the lower mounting seat 5 and extends to the bottom surface of the lower mounting seat 5. A sealing gasket 7 is fixedly connected to the side of the lower housing 1 and the upper housing 2 that are close to each other. On the opposite sides of each of the upper and lower housings 2, O-rings 20 are fixedly connected together. On the opposite sides of each O-ring 20, a connecting flange 9 is fixedly connected together. On the opposite sides of each connecting flange 9, five connecting bolts 10 are threaded together. A heat sink 16 is fixedly connected to the left side of the upper housing 2. A cross partition 15 is fixedly connected to the inner bottom wall of the lower housing 1. A module 18 is fixedly connected to the inner bottom wall of the lower housing 1. On the opposite sides of each module 18, a positioning block 14 is fixedly connected together. A positioning pin 19 is fixedly embedded in the inner bottom wall of each module 18.

[0019] Two lifting rings 8 are provided on the upper part of the upper shell 2. The lifting rings 8 make it easier to suspend and hoist the aluminum alloy battery box during installation and transportation. This can save manpower, improve installation and transportation efficiency, and reduce labor costs. The two lifting rings 8 are fixedly installed on the upper surface of the upper shell 2. The front and back of the lower shell 1 and the upper shell 2 are provided with wire grooves 3. The wire grooves 3 can provide a fixed channel for the cables in the battery box to prevent the cables from becoming loose and messy. This helps to improve the management efficiency of the cables and reduce the risk of cable damage. The inner wall of each wire groove 3 is provided with anti-slip patterns. The sealing gasket 7 is made of rubber. The right side wall of the heat sink 16 is fixedly connected to the drive motor 12. The output end of the drive motor 12 is fixedly connected to the cooling fan 13. The drive motor 12 controls the cooling fan 13, and the speed of the cooling fan 13 can be adjusted as needed to reduce energy consumption and achieve energy saving and environmental protection.

[0020] A sealing ring is provided between the heat sink 16 and the upper housing 2. A heat dissipation groove 11 is provided on the left side of the heat sink 16 and a ventilation groove is provided on the right side of the heat sink 16. The ventilation groove can promote air circulation inside the heat sink 16 and improve the heat dissipation effect. This will help reduce the temperature inside the battery box and improve battery performance and life. Symmetrical temperature sensors 17 are fixedly connected to the adjacent sides of the upper housing 2. The temperature sensors 17 can monitor the temperature inside the upper housing 2 in real time. This will help the battery management system (BMS) to understand the temperature inside the battery box in real time so as to adjust the working status of the battery pack in a timely manner.

[0021] During use, the lower mounting base 5 is fixed to the lower housing 1. The positioning block 14 and positioning pin 19 are used to determine the exact position of the module 18 and correctly install the module 18 on the lower housing 1. If necessary, these modules 18 can be separated by the cross partition 15 to prevent vibration or collision during installation and use. After the module 18 is installed, the upper housing 2 is placed on the lower housing 1, and then the upper mounting base 6 and the lower mounting base 5 are fixed to the lower housing 1 using fixing bolts 4. An airtight seal is established between the upper housing 2 and the lower housing 1 using sealing gasket 7. Then, the connecting flange 9 is installed, and the connecting bolts 10 are used to pass through the connecting flange 9 and connect to the lower housing 1 and the upper housing 2. The connecting flange 9 is used to connect the external components of the lower housing 1 and the upper housing 2. During vehicle operation, the heat dissipation slot 11 collects and dissipates the heat generated by the module 18 through good thermal contact with the heat dissipation cover 16. The drive motor 12 drives the cooling fan 13 to force cooling the inside of the battery box. The heat is discharged through the cooling fan 13. The connected battery box is assembled with other components to form a complete battery pack.

[0022] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A connection structure for an aluminum alloy battery box, comprising a lower shell (1) and an upper shell (2), characterized in that: Lower mounting bases (5) are fixedly connected to both the front and back sides of the lower housing (1). Upper mounting bases (6) are fixedly connected to both the front and back sides of the upper housing (2). Four fixing bolts (4) are threaded onto the upper surfaces of the two upper mounting bases (6). Each fixing bolt (4) passes through the upper mounting base (6) and the lower mounting base (5) in sequence and extends to the bottom surface of the lower mounting base (5). A sealing gasket (7) is fixedly connected to the side of the lower housing (1) and the upper housing (2) that are close to each other. A sealing gasket (7) is fixedly connected to the side of the lower housing (1) and the side of the upper housing (2) that are far apart from each other. There are O-rings (20), and each of the O-rings (20) is fixedly connected to a connecting flange (9) on the side away from each other. Each of the connecting flanges (9) is threaded with five connecting bolts (10) on the side away from each other. The left side of the upper housing (2) is fixedly connected to a heat sink (16). The inner bottom wall of the lower housing (1) is fixedly connected to a cross partition (15). The inner bottom wall of the lower housing (1) is fixedly connected to a module (18). Each of the modules (18) is fixedly connected to a positioning block (14) on the side close to each other. Each of the modules (18) is fixedly embedded with a positioning pin (19) on the inner bottom wall.

2. The connection structure of an aluminum alloy battery box according to claim 1, characterized in that: Two lifting rings (8) are provided above the upper housing (2), and the two lifting rings (8) are fixedly installed on the upper surface of the upper housing (2).

3. The connection structure of an aluminum alloy battery box according to claim 1, characterized in that: The front and back sides of the lower housing (1) and upper housing (2) are provided with wire grooves (3), and the inner wall of each wire groove (3) is provided with anti-slip patterns.

4. The connection structure of an aluminum alloy battery box according to claim 1, characterized in that: The sealing gasket (7) is made of rubber. A drive motor (12) is fixedly connected to the right side wall of the heat sink (16). A cooling fan (13) is fixedly connected to the output end of the drive motor (12).

5. The connection structure of an aluminum alloy battery box according to claim 1, characterized in that: A sealing ring is provided between the heat sink (16) and the upper shell (2). A heat sink groove (11) is provided on the left side of the heat sink (16), and a ventilation groove is provided on the right side of the heat sink (16).

6. The connection structure of an aluminum alloy battery box according to claim 1, characterized in that: The upper housing (2) has symmetrical temperature sensors (17) fixedly connected to each other on one side.

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