A battery waterproof box structure

Abstract

The utility model discloses a battery waterproof box structure, including a box cover, a connector A, a connector B, a handle, a box body, a sealant, and a rivet nut. The box cover is installed on the top of the box body, and connectors A and B are installed on the left and right sides of the box body respectively. A handle is installed at one end of the box body where connector A is installed. The box cover and the box body are welded using a four-sided bending process, and the four sides are welded using a full welding process and polished into rounded corners after welding. At the same time, sealant is applied to the inside of the welding, and the connections between the box cover, connector A and connector B and the box body are fixed using rivet nuts. The utility model has been tested through actual submersion, and it can be found that the outer shell meets the IPX7 waterproof level, the sealant can be sealed at multiple angles, has strong adhesion, and has strong seismic resistance. Compared with sealing rings, sealants have low costs and a simple installation process, which is beneficial to production progress.

Description

Technical Field

[0001] The utility model relates to the field of batteries, in particular to a waterproof box structure of a battery. Background Art

[0002] With the popularity of electric bicycles, their safety issues have become increasingly prominent. Some electric bicycles have problems such as speeding, overweight, and poor braking performance, which pose safety hazards to people's travel. In order to ensure the safe development of electric bicycles, companies have strengthened the research and development and supervision of battery technology. In addition, indicators such as shell flame retardancy, handle strength, and waterproofing are also written into the specifications. The waterproofness of battery shells on the market is not ideal. Most sheet metal boxes are box body + box cover structure, and the two are fastened by screws. A gap is reserved between the locking surface of the box body and the box cover to facilitate installation during the product production process. Although some battery packs are designed with sealing rings for waterproofing, the waterproof function is not ideal.

[0003] No waterproof structure: During use or storage, moisture will enter the battery pack through the gap, causing internal short circuits and affecting the safety of the vehicle; Sealing ring structure: The sealing strips on the market are mostly made of foam materials and synthetic rubber, which are excellent, cheap and easy to operate. However, the long-term use of the material will cause the performance of the raw materials to deteriorate, resulting in the box's waterproof level failing to meet IP67. Utility Model Content

[0004] The purpose of the utility model is to provide a battery waterproof box structure to solve the above technical problems.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A battery waterproof box structure comprises a box cover, a connector A, a connector B, a handle, a box, a sealant, and rivet nuts. The box cover is installed on the top of the box, and connectors A and B are installed on the left and right sides of the box respectively. A handle is installed at one end of the box where connector A is installed.

[0007] Preferably, the box cover and the box body are welded by a four-sided bending process, the four sides are fully welded on the outside and polished into rounded corners after welding, and sealant is applied to the inside of the weld. At the same time, the connections between the box cover, connector A and connector B and the box body are fixed with rivet nuts.

[0008] Preferably, the box body and the box cover are both made of galvanized sheet.

[0009] Preferably, the connector A, the handle and the main body of the connector B are all made of plastic.

[0010] Preferably, the sealant is a single-component neutral organic silicone sealant.

[0011] Preferably, the sealant is any one of acrylic sealant, chloroprene rubber sealant, polyurethane sealant or polysiloxane sealant.

[0012] Preferably, the self-clinching nut is a blind hole type self-clinching nut.

[0013] Compared with the prior art, the utility model has the following advantages: the utility model has been tested for actual submersion, the shell meets the IPX7 waterproof level, the sealant can be sealed at multiple angles, has strong adhesion, and has strong anti-seismic performance. Compared with the sealing ring, the sealant has low cost and simple installation process, which is conducive to production progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the assembly structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the sealing structure outside the box of the utility model;

[0016] Figure 3 This is a schematic diagram of the sealing structure of the box cover of the utility model;

[0017] Figure 4 This is a schematic diagram of the sealing structure of the box body of the utility model;

[0018] Figure 5 This is a schematic diagram of the sealing structure of the handle of the utility model;

[0019] Figure 6 This is a schematic diagram of the sealing structure of the connector A of the utility model;

[0020] Figure 7 This is a schematic diagram of the sealing structure of the connector B of the utility model;

[0021] In the figure: box cover 1, connector A2, connector B3, handle 4, box body 5, sealant 6, and rivet nut 7. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] A battery waterproof box structure comprises a box cover 1, a connector A2, a connector B3, a handle 4, a box 5, a sealant 6, and a rivet nut 7. The box cover 1 is installed on the top of the box 5, and the connector A2 and the connector B3 are installed on the left and right sides of the box 5 respectively. The handle 4 is installed at one end of the box 5 where the connector A2 is installed.

[0024] The box cover 1 and the box body 5 are both welded by bending on four sides. The outer sides of the four sides are fully welded and polished into rounded corners after welding. At the same time, sealant is applied on the inner side of the welding to achieve double protection. At the same time, the connection between the box cover 1, connector A2 and connector B3 and the box body 5 is fixed by pressure riveting nuts 7. Before applying sealant, ensure that there is no impurities such as oil, dust, etc. on the surface. During the application process, the sealant should be evenly applied from the center to both sides to ensure that the thickness of the sealant is consistent.

[0025] The box body 5 and the box cover 1 are made of galvanized sheet, which has high plasticity and can be easily made into various shapes and sizes, making the manufacturing process more efficient and reducing production costs. Secondly, SGCC has strong corrosion resistance and does not require surface treatment in non-exterior surfaces.

[0026] The connector A2, handle 3 and connector B3 are all made of plastic, which has excellent chemical stability and corrosion resistance, and the structure has certain strength and lightness.

[0027] The sealant is a single-component neutral organic silicone sealant, which has excellent adhesion to metal, plastic and other substrates, and has sufficient elastic deformation to resist various vibrations and deformations.

[0028] The sealant is any one of acrylic sealant, chloroprene rubber sealant, polyurethane sealant or polysiloxane sealant.

[0029] The self-clinching nut 7 is a blind hole type self-clinching nut, which has a waterproof function and a relatively stable and reliable connection strength.

[0030] If there are no functional assembly requirements, avoid excessive pressure inside the box 5 during the installation process, which may break the sealant area. It is recommended that the parts be installed from large to small, first installing the box cover 1 → connector B3 → connector A2 → handle 4 in order.

[0031] During the assembly process, ensure that the parts and the box 5 are installed in the correct direction, avoid the secondary use of glue, which will reduce its bonding performance, and check whether there is sealant leakage in the gap after assembly to achieve the best effect. After the assembly is completed, the excess seal should be cleaned up immediately with tools such as a pressure plate or a scraper to avoid affecting the gluing effect. After the sealant is applied, it needs to be completely cured before it can be used.

[0032] The above is a preferred embodiment of the present invention. For ordinary technicians in this field, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, changes, modifications, substitutions and variations made to the implementation methods are still within the scope of protection of the present invention.

Claims

1. A battery waterproof box structure, characterized in that: It includes a box cover, a connector A, a connector B, a handle, a box body, a sealant, and a rivet nut. The box cover is installed on the top of the box body. Connectors A and connector B are installed on the left and right sides of the box body respectively. A handle is installed at one end of the box body where connector A is installed. The box cover and the box body are welded using a four-sided bending process. The four sides are welded using a full welding process and polished into rounded corners after welding. At the same time, sealant is applied to the inside of the welding process. At the same time, the connections between the box cover, connector A and connector B and the box body are fixed using rivet nuts. The box body and the box cover are made of galvanized plates. The main body materials of connector A, handle and connector B are plastic parts. The sealant is a single-component neutral organic silicone glue. The sealant is any one of acrylic sealant, chloroprene rubber sealant, polyurethane sealant or polysiloxane sealant. The rivet nut is a blind hole type rivet nut.

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