Battery protection sealing cover
By designing a battery protective cover with fluororubber sealing strips and copper alloy terminals, the sealing and heat dissipation problems of lead-acid battery covers were solved, achieving higher sealing and safety, and improving the reliability and stability of battery use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN JINGNENG ENERGY CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-05-08
AI Technical Summary
The existing lead-acid battery sealing structure is not perfect, which leads to the leakage of acidic gas and poor heat dissipation, affecting battery performance and safety.
A battery protection cover comprising a sealing assembly and a terminal assembly is designed. It uses an annular sealing strip made of fluororubber and copper alloy terminals to enhance sealing and conductivity. The annular sealing strip and the sealing groove cooperate to reduce acid gas leakage. The terminals are made of copper alloy to improve battery voltage.
It effectively prevents acid gas leakage, improves the battery's sealing and safety, enhances the battery's reliability and stability, and extends the battery's lifespan.
Smart Images

Figure CN224217576U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of lead-acid battery technology, specifically, it relates to a battery protective cover. Background Technology
[0002] Lead-acid batteries are a widely used chemical power source in automobiles, electric vehicles, energy storage systems, and other fields. As a crucial component of the battery, the lead-acid battery cover primarily functions to seal the internal space, secure the battery terminals, and isolate the battery from the external environment. However, existing lead-acid battery covers present several problems in practical use. Firstly, the sealing structure of traditional covers is not perfect, easily leading to leakage of acidic gases from inside the battery. This not only pollutes the environment but may also corrode surrounding components, reducing battery life. Secondly, lead-acid batteries generate heat during charging and discharging, and existing covers have poor heat dissipation performance, causing heat to accumulate inside the battery. This affects battery performance and safety, and may even lead to serious consequences such as battery bulging or explosion. Therefore, there is an urgent need to design a new type of lead-acid battery cover to solve these problems. Utility Model Content
[0003] To solve the above-mentioned technical problems, this utility model provides a new technical solution:
[0004] A battery protection cover includes a square battery box and a matching cover body. The top of the battery box has an opening, the center of the cover body has a groove that matches the opening, and the cover body has a sealing component and two terminal components.
[0005] The pole assembly includes a pole and a mounting hole on the cap body. The inner wall of the mounting hole is provided with an annular sealing groove, and a matching sealing ring is installed in the annular sealing groove. The lower end of the pole passes through the sealing ring and is sealed and fixedly connected to the cap body. Several annular gaskets are fitted on one end of the pole on the cap body, and the top of the pole is provided with threads, and a matching nut is provided on the threads.
[0006] The sealing assembly includes two annular sealing strips, one on the top and one on the bottom, which are respectively fitted onto the outer side of the groove. The side of the annular sealing strip closest to the outer side of the groove of the cover body is fixedly connected to the cover body. The side wall of the battery box opening is provided with a sealing groove that matches the annular sealing strip. The edge of the cover body and the battery box are respectively provided with screw holes, and screws are threaded into the screw holes.
[0007] Furthermore, the annular sealing strip is made of fluororubber, which has good acid resistance, high temperature resistance and sealing performance, and can effectively prevent acid gas from leaking from the mounting hole along the pole.
[0008] Furthermore, the cross-section of the annular sealing strip is trapezoidal. The trapezoidal structure of the annular sealing strip can better match the sealing groove, enhance the sealing effect, and generate greater elastic deformation when compressed, thereby improving the reliability of the seal.
[0009] Furthermore, the terminal post assemblies are respectively located at the diagonal corners of the grooves, and the annular gasket is a shock-absorbing rubber gasket, which can reduce the damage to the terminal posts when the battery box vibrates.
[0010] Furthermore, the terminals are made of copper alloy, which has excellent electrical conductivity. Multiple batteries are connected to each other through the terminals. By connecting them in series, the battery voltage can be increased, allowing the electric vehicle to travel further, faster, and more stably.
[0011] This utility model also includes other devices or components that enable the battery protection cover to function properly, all of which are conventional techniques in the art. Furthermore, the sealing rings and screws not specified in this utility model all employ conventional techniques in the art.
[0012] The working principle of this utility model is as follows: when using this device, the battery plates and acid are filled into the battery box, the lower end of the terminal post is connected to the corresponding terminal plate, the mounting hole corresponds to the terminal post, and the groove corresponds to the opening, so that the cover body is snapped onto the battery box by the annular sealing strip and the sealing groove, and the screw hole is threaded to the screw to further fix the cover body.
[0013] The beneficial effects of this utility model are that the device has good sealing performance. By setting a sealing ring on the inner wall of the mounting hole, it can effectively prevent acid gas from leaking from the mounting hole along the electrode post. The annular sealing strip on the edge of the cover body, the matching sealing groove, and the screw holes and screws further enhance the sealing performance between the cover body and the battery box, greatly reducing the possibility of acid gas leakage inside the battery, protecting the surrounding environment and components, and improving the safety and reliability of battery use. Attached Figure Description
[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0016] Figure 2 This is a partially enlarged schematic diagram of the present invention.
[0017] Figure 3 This is a top view of the structure of this utility model. Detailed Implementation
[0018] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.
[0019] Example
[0020] like Figures 1-3 As shown, the present invention provides a battery protection cover, which includes a square battery box 1 and a matching cover body 2. The top of the battery box is provided with an opening, the center of the cover body 2 is provided with a groove that matches the opening, and the cover body 2 is provided with a sealing component and two terminal components.
[0021] The pole assembly includes a pole 3 and a mounting hole 4 opened on the cover body. The inner wall of the mounting hole 4 is provided with an annular sealing groove, and a matching sealing ring 5 is installed in the annular sealing groove. The lower end of the pole 3 passes through the sealing ring 5 and is sealed and fixedly connected to the cover body 2. Several annular gaskets 6 are fitted on one end of the pole 3 located on the cover body 2, and the top end of the pole 3 is provided with threads, and a matching nut 7 is provided on the threads.
[0022] The sealing assembly includes two annular sealing strips 8, one above the other, which are respectively fitted onto the outer side of the groove of the cover body 2. The side of the annular sealing strip 8 closest to the outer side of the groove of the cover body 2 is fixedly connected to the cover body 2. The side wall of the opening of the battery box 1 is provided with a sealing groove 9 that matches the annular sealing strip 8. The edge of the cover body 2 and the battery box are respectively provided with screw holes 10, and screws 11 are threaded into the screw holes 10.
[0023] As a further measure of this utility model, the annular sealing strip 8 is made of fluororubber, which has good acid resistance, high temperature resistance and sealing performance, and can effectively prevent acid gas from leaking from the mounting hole 4 along the pole 3; the cross section of the annular sealing strip 8 is trapezoidal, and the trapezoidal structure of the annular sealing strip 8 can better match the sealing groove 9, enhance the sealing effect, and can generate greater elastic deformation when squeezed, thus improving the reliability of the seal; the pole assembly is respectively set at the diagonal of the groove of the cover body 2, and the annular gasket 6 is a shock-absorbing rubber gasket, which can reduce the damage to the pole 3 when the battery box 1 vibrates; the pole 3 is made of copper alloy, which has good conductivity, and multiple batteries are connected to each other through the pole 3. Through series connection, the battery voltage can be increased, making the electric vehicle travel farther, faster and more stably.
[0024] The working principle of this utility model is as follows: when using this device, the battery plates and acid are filled into the battery box 1, the lower end of the pole 3 is connected to the corresponding pole plate, the mounting hole 4 corresponds to the pole 3, the groove of the cover body 2 corresponds to the opening of the battery box 1, so that the annular sealing strip 8 and the sealing groove 9 of the cover body 2 are engaged on the battery box 1, and the screw hole 10 is threadedly connected to the screw 11 to further fix the cover body 2.
[0025] The embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.
Claims
1. A battery protective cover, comprising a square battery compartment and a matching cover body, characterized in that: The top of the battery box has an opening, the center of the cover body has a groove that matches the opening, and the cover body has a sealing component and two terminal components. The pole assembly includes a pole and a mounting hole on the cap body. The inner wall of the mounting hole is provided with an annular sealing groove, and a matching sealing ring is installed in the annular sealing groove. The lower end of the pole passes through the sealing ring and is sealed and fixedly connected to the cap body. A plurality of annular gaskets are fitted on one end of the pole on the cap body, and the top end of the pole is provided with threads, and a matching nut is provided on the threads. The sealing assembly includes two annular sealing strips respectively fitted onto the outer side of the groove. The side of the annular sealing strip closest to the outer side of the groove of the cover body is fixedly connected to the cover body. The side wall of the battery box opening is provided with a sealing groove that matches the annular sealing strip. The edge of the cover body and the battery box are respectively provided with screw holes, and screws are threaded into the screw holes.
2. The battery protection cover according to claim 1, characterized in that: The annular sealing strip is made of fluororubber.
3. The battery protection cover according to claim 1, characterized in that: The cross-section of the annular sealing strip is trapezoidal.
4. A battery protection cover according to claim 1, characterized in that: The pole posts are respectively located at opposite corners of the grooves, and the annular gasket is a shock-absorbing rubber gasket.
5. A battery protection cover according to claim 1, characterized in that: The electrode post is made of copper alloy.