An easily usable battery top cover structure

Abstract

This invention discloses a novel, easy-to-use battery top cover structure, comprising: a substrate with terminals at both ends on its inner side, the terminals having injection-molded edging on their outer surfaces; a brake frame disposed on the lower surface of the substrate; an explosion-proof valve plate fixed inside a pressure relief hole in the middle of the inner side of the substrate, the brake frame having a protective mesh plate corresponding to the explosion-proof valve plate on its inner side; and a patch disposed on the upper surface of the substrate to cover the explosion-proof valve plate. This invention, by incorporating terminals, an insulating pad, a second conductive sheet, a first conductive sheet, an adjusting block, and a fixing seat, allows for timely detection of the explosion-proof valve plate before it breaks, facilitating early warning and manual maintenance, thus improving the convenience of repair. By incorporating a limit ring, a ceramic washer, and a connecting ring block, this device significantly improves the contact effect between the terminals and the sealing ring during installation, ensuring a secure seal around the terminals during long-term use.

Description

Technical Field

[0001] Specifically, this invention relates to a novel, easy-to-use battery top cover structure. Background Technology

[0002] The battery top cover refers to the upper part of the battery, especially for rechargeable batteries or batteries used in some electronic devices. It is the external sealed part of the battery, which protects the internal battery components, prevents external substances from entering the battery, and ensures that the battery works normally. With the development of power lithium batteries, the technical requirements for battery top covers are becoming more and more stringent. Battery top covers are generally equipped with explosion-proof valves to release gas generated inside the battery casing due to accidental failure, so as to prevent an explosion caused by excessive gas accumulation inside the battery casing.

[0003] Existing explosion-proof valve plate structures are relatively simple. Usually, the excessive amount of gas accumulated inside the battery casing can only be discovered after the explosion-proof valve plate breaks and releases gas. However, this causes environmental pollution from the released gas, and the high temperature of the gas also poses a safety risk to surrounding batteries. Damage to the explosion-proof valve plate also poses a risk of electrolyte leakage. It cannot effectively provide early warning of the generated gas. In addition, the lower end of the terminal of the battery top cover is usually equipped with a sealing ring that is insulated from the cover plate. However, the sealing ring cannot make effective deformation contact with the terminal during installation, resulting in poor sealing. Therefore, we propose a new type of battery top cover structure that is easy to use. Summary of the Invention

[0004] The purpose of this invention is to provide a novel, easy-to-use battery top cover structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a novel, easy-to-use battery top cover structure, comprising:

[0006] A substrate, wherein pole posts are provided at both ends of the inner side of the substrate, and the outer surface of the pole posts has injection-molded edging;

[0007] Brake frame, disposed on the lower surface of the substrate;

[0008] An explosion-proof valve plate is fixed inside a pressure relief hole opened in the middle of the inner side of the base plate, and the inner side of the brake frame has a protective mesh plate corresponding to the explosion-proof valve plate.

[0009] A patch is placed on the upper surface of the substrate to cover the explosion-proof valve plate;

[0010] An early warning component is installed between the explosion-proof valve plate and the patch to provide an external warning when the explosion-proof valve plate reaches a predetermined deformation.

[0011] Preferably, the warning component includes a terminal block, an insulating pad, a second conductive sheet, a first conductive sheet, an adjusting block, and a fixing base. The fixing base is fixed to the lower surface of the patch. The adjusting block is connected to the inner side of the fixing base through a threaded portion. The lower surface of the adjusting block has a first conductive sheet, and the first conductive sheet is connected to the terminal block fixed on the patch through a first wire. The second conductive sheet and the insulating pad are fixed to the explosion-proof valve plate from top to bottom, and the second conductive sheet is connected to the terminal block through a second wire.

[0012] Preferably, the explosion-proof valve plate includes a fixing part, an elastic part, and a connecting part. The fixing part is fixed to the lower inner side of the substrate, the inner side of the fixing part protrudes upward to form an elastic part, and the inner side of the elastic part has a connecting part.

[0013] Preferably, the fixing base is annular.

[0014] Preferably, the substrate has a stepped hole on its inner side that mates with the pole post. The inner side of the stepped hole includes a connecting ring block and an interference fit component. The connecting ring block and the interference fit component are distributed in sequence from the inside to the outside along the radial direction of the stepped hole. The inner side of the connecting ring block has a sealing ring for insulating and sealing. The outer surface of the connecting ring block is fitted with a limiting ring for pressing the pole post into tight contact with the sealing ring. A ceramic washer is provided on the lower surface of one end of the limiting ring. The lower surface of the brake frame is provided with a connecting piece that is electrically connected to the pole post.

[0015] Preferably, the inner surface of the connecting ring block extends inward and downward to form a protrusion that allows the sealing ring to move in one direction, and the outer surface of the connecting ring block is provided with a threaded portion that mates with the limiting ring.

[0016] Preferably, a first through hole is provided on the inner side of the connecting ring block.

[0017] Preferably, the limiting ring includes a ring segment, an elastic segment, and a pressing segment. The ring segment is threaded to the connecting ring block, and a ceramic washer is fixed to the top of one side wall of the ring segment. One end of the ceramic washer has a pressing segment that presses the pole into contact with the sealing ring.

[0018] Preferably, a second through hole corresponding to the first through hole is provided through the inner side of the elastic segment.

[0019] Preferably, the explosion-proof valve plate is elliptical.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] (1) This invention, by providing a wiring terminal, an insulating pad, a second conductive sheet, a first conductive sheet, an adjusting block, and a fixing base, avoids the situation where excessive gas is generated inside the battery casing, and the gas pressure can only be released to the outside by the rupture of the explosion-proof valve plate. This device can detect the explosion-proof valve plate in time before the explosion-proof valve plate ruptures, so as to provide early warning and manual maintenance, which improves the convenience of maintenance and can avoid the released gas from affecting the surrounding batteries, thereby improving the safety of the surrounding batteries. The structure is simple and easy to use.

[0022] (2) By setting a limiting ring, ceramic gasket and connecting ring block, the traditional method of placing the electrode directly on the sealing ring during electrode installation avoids the sealing ring being squeezed and deformed, resulting in poor contact sealing effect. This device can greatly improve the contact effect between the electrode and the sealing ring during installation, reduce the loosening and falling off of the sealing ring, ensure the sealing ring is firmly installed, and ensure a firm seal around the electrode during long-term use, reducing electrolyte leakage. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the exploded structure of the present invention;

[0025] Figure 3 This is a schematic cross-sectional view of the substrate structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the explosion-proof valve plate structure of the present invention;

[0027] Figure 5 This is a schematic diagram of the connection structure between the pole and the sealing ring of the present invention;

[0028] Figure 6 This is a schematic cross-sectional view of the connecting ring block of the present invention;

[0029] Figure 7 This is a schematic cross-sectional view of the limiting ring structure of the present invention.

[0030] In the diagram: 1. Substrate; 101. Stepped hole; 2. Patch; 3. Terminal post; 4. Injection molding edging; 5. Brake frame; 6. Explosion-proof valve plate; 601. Fixing part; 602. Elastic part; 603. Connecting part; 7. Connecting piece; 8. Sealing ring; 901. Terminal; 902. Insulating pad; 903. Second conductive piece; 904. First conductive piece; 905. Adjusting block; 906. Fixing base; 11. Limiting ring; 111. Ring segment; 112. Elastic segment; 113. Pressing segment; 114. Second through hole; 12. Ceramic washer; 13. Connecting ring block; 131. Protrusion; 132. External thread; 133. First through hole; 14. Interference fit part. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1-7 This invention provides a technical solution: a novel, easy-to-use battery top cover structure, comprising:

[0033] Substrate 1, with pole posts 3 at both ends of the inner side of substrate 1, and the outer surface of pole posts 3 having injection-molded edging 4;

[0034] Brake frame 5 is disposed on the lower surface of substrate 1;

[0035] The explosion-proof valve plate 6 is fixed inside the pressure relief hole opened in the middle of the inner side of the base plate 1, and the inner side of the brake frame 5 has a protective mesh plate corresponding to the explosion-proof valve plate 6 to prevent objects inside the battery casing from contacting the explosion-proof valve plate 6 and affecting the rupture and pressure relief of the explosion-proof valve plate 6.

[0036] Patch 2 is disposed on the upper surface of substrate 1 to cover explosion-proof valve plate 6;

[0037] The warning component is located between the explosion-proof valve plate 6 and the patch 2 to provide an external warning when the explosion-proof valve plate 6 reaches a predetermined deformation. This allows the explosion-proof valve plate 6 to deform itself after gas is generated inside the battery casing, providing an external warning before releasing the gas. This prevents the explosion-proof valve plate 6 from suddenly rupturing when the amount of gas inside the battery casing is too large, releasing gas into the environment and affecting surrounding batteries.

[0038] Preferably, the warning component includes a terminal block 901, an insulating pad 902, a second conductive sheet 903, a first conductive sheet 904, an adjusting block 905, and a fixing base 906. The fixing base 906 is fixed to the lower surface of the patch 2. The adjusting block 905 is connected to the inner side of the fixing base 906 through a threaded portion, and the lower surface of the adjusting block 905 has a first conductive sheet 904. The first conductive sheet 904 is connected to the terminal block 901 fixed on the patch 2 through a first wire. The second conductive sheet 903 and the insulating pad 902 are fixed to the explosion-proof valve plate 6 from top to bottom, and the second conductive sheet 903 is connected to the terminal block 901 through a second wire. This facilitates timely detection of the deformation effect of the explosion-proof valve plate 6 after it is affected by gas inside the battery casing. When the first conductive sheet 904 and the second conductive sheet 903 come into contact, the circuit is made conductive to warn the outside. Gas has been generated inside the battery casing, and if not dealt with in time, there is a risk that the explosion-proof valve plate 6 will rupture and release gas to the outside.

[0039] Preferably, the explosion-proof valve plate 6 includes a fixing part 601, an elastic part 602, and a connecting part 603. The fixing part 601 is fixed to the lower inner side of the substrate 1. The inner side of the fixing part 601 has an upward protrusion to form the elastic part 602, and the inner side of the elastic part 602 has a connecting part 603, which facilitates the upward movement of the connecting part 603 to drive the second conductive plate 903 to contact the first conductive plate 904 on it, so as to make the circuit conduction warning.

[0040] Preferably, the fixing base 906 is annular, which facilitates the adjustment of the position of the first conductive sheet 904, and thus the distance between the first conductive sheet 904 and the second conductive sheet 903 can be adjusted, thereby adjusting the different warning effects caused by different displacement of the connecting part 603.

[0041] Preferably, the inner side of the substrate 1 is provided with a stepped hole 101 that mates with the pole post 3. The inner side of the stepped hole 101 includes a connecting ring block 13 and an interference fit member 14. The connecting ring block 13 and the interference fit member 14 are distributed radially from the inside to the center along the stepped hole 101. The inner side of the connecting ring block 13 has a sealing ring 8 for insulating and sealing. The outer surface of the connecting ring block 13 is fitted with a limiting ring 11 for pressing the pole post 3 and the sealing ring 8 into tight contact. A ceramic washer 12 is provided on the lower surface of one end of the limiting ring 11. The lower surface of the brake frame 5 is provided with a connecting piece 7 that is electrically connected to the pole post 3, which facilitates better elastic deformation of the sealing ring 8, thereby improving the contact sealing effect between the pole post 3 and the sealing ring 8, and between the substrate 1 and the sealing ring 8.

[0042] Preferably, the inner surface of the connecting ring block 13 extends inward and downward to form a protrusion 131 that allows the sealing ring 8 to move in one direction. The outer surface of the connecting ring block 13 is provided with a threaded portion that mates with the limiting ring 11. This helps to better prevent the sealing ring 8 from accidentally falling off or becoming misaligned after it is placed inside the stepped hole 101, thus ensuring the installation effect of the sealing ring 8.

[0043] Preferably, a first through hole 133 is provided through the inner side of the connecting ring block 13.

[0044] Preferably, the limiting ring 11 includes a ring segment 111, an elastic segment 112, and a pressing segment 113. The ring segment 111 is threadedly connected to the connecting ring block 13, and a ceramic washer 12 is fixed to the top of one side wall of the ring segment 111. One end of the ceramic washer 12 has a pressing segment 113 that presses the pole post 3 into contact with the sealing ring 8, so that the pressing segment 113 has a good elastic effect, so that the sealing ring 8 can maintain elastic sealing for a long time.

[0045] Preferably, the inner side of the elastic segment 112 is provided with a second through hole 114 corresponding to the first through hole 133, so that during injection molding, the injection molding edge 4 generated by injection molding fills multiple places inside the stepped hole 101, thereby improving the firmness of the connection and preventing the pole post 3 or the sealing ring 8 from moving.

[0046] Preferably, the explosion-proof valve plate 6 is elliptical to facilitate a better pressure relief area.

[0047] The working principle and usage process of this invention are as follows: During use, the sealing ring 8 and the pole post 3 are placed sequentially inside the stepped hole 101. The protrusion 131 ensures a tight contact between the sealing ring 8 and the substrate 1, preventing the sealing ring 8 from accidentally slipping out of the stepped hole 101. Then, the limiting ring 11 and the connecting ring block 13 engage through their threaded portion, allowing the elastic section 112 and the pressing section 113 to press down on the pole post 3, ensuring a tight fit between the pole post 3 and the sealing ring 8. The elasticity of the elastic section 112 greatly improves the contact sealing effect between the pole post 3 and the sealing ring 8. Finally, injection molding is performed between the substrate 1 and the pole post 3 to form an injection-molded edge 4, thus completing the fixation of the pole post 3. The connection is strong and can further enhance... To further improve the insulation and sealing around the terminal post 3, after the final design is installed on the battery, if gas is generated inside the battery casing, the excessive gas volume will cause the elastic part 602 to deform. At this time, the connecting part 603 will drive the second conductive piece 903 to move upward until the second conductive piece 903 reaches the predetermined deformation to contact the first conductive piece 904, thereby making the first wire and the second wire electrically connected. After the external line connected to the terminal 901 detects the continuity, an early warning will be generated to facilitate battery maintenance and replacement. When gas continues to accumulate inside the battery casing, the connection between the explosion-proof valve plate 6 and the base plate 1 will break, and then the gas will be discharged to the outside through the pressure relief hole on the inner side of the base plate 1 to release the pressure.

[0048] 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. An easy-to-use battery top cover structure, characterized in that, include: The substrate (1) has pole posts (3) at both ends of its inner side, and the outer surface of the pole posts (3) has injection-molded edging (4). Brake frame (5) is disposed on the lower surface of substrate (1); An explosion-proof valve plate (6) is fixed inside the pressure relief hole opened in the middle of the inner side of the base plate (1), and the inner side of the brake frame (5) has a protective mesh plate corresponding to the explosion-proof valve plate (6); A patch (2) is disposed on the upper surface of the substrate (1) to cover the explosion-proof valve plate (6); The warning component is disposed between the explosion-proof valve plate (6) and the patch (2) to provide an external warning when the explosion-proof valve plate (6) reaches a predetermined deformation; The substrate (1) has a stepped hole (101) on its inner side that mates with the pole post (3). The stepped hole (101) includes a connecting ring block (13) and an interference fit part (14) on its inner side. The connecting ring block (13) and the interference fit part (14) are arranged in sequence from the inside to the outside along the radial direction of the stepped hole (101). The connecting ring block (13) has a sealing ring (8) on its inner side for insulation and sealing. The connecting ring block (13) has a limiting ring (11) on its outer surface for pressing the pole post (3) and the sealing ring (8) into close contact. A ceramic washer (12) is provided on the lower surface of one end of the limiting ring (11). The brake frame (5) has a connecting piece (7) that is electrically connected to the pole post (3) on its lower surface. The inner surface of the connecting ring block (13) extends inward and downward to form a protrusion (131) that allows the sealing ring (8) to move in one direction. The outer surface of the connecting ring block (13) is provided with a threaded portion that mates with the limiting ring (11). The inner side of the connecting ring block (13) is provided with a first through hole (133); The limiting ring (11) includes a ring segment (111), an elastic segment (112) and a pressing segment (113). The ring segment (111) is threaded to the connecting ring block (13), and a ceramic washer (12) is fixed to the top of one side wall of the ring segment (111). One end of the ceramic washer (12) has a pressing segment (113) that presses the pole post (3) to contact the sealing ring (8). The inner side of the elastic segment (112) is provided with a second through hole (114) corresponding to the first through hole (133).

2. The easy-to-use battery top cover structure according to claim 1, characterized in that: The warning component includes a terminal block (901), an insulating pad (902), a second conductive sheet (903), a first conductive sheet (904), an adjusting block (905), and a fixing seat (906). The fixing seat (906) is fixed to the lower surface of the patch (2). The adjusting block (905) is connected to the inside of the fixing seat (906) through a threaded part. The lower surface of the adjusting block (905) has a first conductive sheet (904). The first conductive sheet (904) is connected to the terminal block (901) fixed on the patch (2) through a first wire. The second conductive sheet (903) and the insulating pad (902) are fixed to the explosion-proof valve plate (6) from top to bottom. The second conductive sheet (903) is connected to the terminal block (901) through a second wire.

3. The easy-to-use battery top cover structure according to claim 2, characterized in that: The explosion-proof valve plate (6) includes a fixing part (601), an elastic part (602) and a connecting part (603). The fixing part (601) is fixed to the lower inner side of the substrate (1). The inner side of the fixing part (601) protrudes upward to form an elastic part (602), and the inner side of the elastic part (602) has a connecting part (603).

4. The easy-to-use battery top cover structure according to claim 2, characterized in that: The fixing seat (906) is ring-shaped.

5. The easy-to-use battery top cover structure according to claim 1, characterized in that: The explosion-proof valve plate (6) is elliptical.

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