Cover plate structure of battery

Abstract

The utility model provides a battery cover plate structure, which relates to the technical field of battery cover plates, and comprises a cover plate base body and connecting mechanisms, the upper side and the lower side of the cover plate base body are provided with the connecting mechanisms, the connecting mechanisms comprise connecting assemblies and fusing assemblies, the inner side of the cover plate base body is provided with the connecting assemblies, and the fusing assemblies are connected with the connecting assemblies. Through the arrangement of the explosion-proof assembly, an explosion-proof opening and a piston piece are tightly attached under the elastic acting force of a spring, it is ensured that the battery cover plate is kept sealed in the normal use state, and when the internal pressure is rapidly increased due to the fact that the internal temperature of a battery rises due to overcharging, short circuit and other reasons, the explosion-proof opening and the piston piece are tightly attached to each other. The piston piece can be jacked up by the internal pressure to release the internal pressure when the preset bursting pressure is reached, the risk of battery damage is reduced, after the pressure is released, the piston piece is pressed back to the anti-explosion opening under the elastic action of the spring, the whole battery cover plate is restored to a sealed state, the risk of battery damage is reduced, and the battery maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery cover plates, in particular to a battery cover plate structure. Background Art

[0002] The battery cover structure is usually designed to protect the interior of the battery from physical damage and environmental factors, while ensuring the safety and reliability of the electrical connection. The battery cover assembly may include a cover, a sealing cover, a weld portion and other structures. A through hole may be formed on the cover, and the sealing cover is provided on the cover to seal the through hole. The weld portion is located between the sealing cover and the cover to achieve a sealed connection between the two. This design helps to enhance the connection strength between the cover and the sealing cover, reduce the difficulty of welding operations, improve assembly stability, and enhance sealing performance.

[0003] After searching, the patent document of "CN211125706U" mentioned that "the present disclosure relates to the field of battery technology, and in particular to a power battery cover plate structure and a lithium battery having the same. The power battery cover plate structure includes a base, an electrode terminal and a rubber-coated portion. The base is provided with an extraction hole; the electrode terminal includes an upper portion, a waist portion and a bottom portion, and the waist portion connects the upper portion and the bottom portion; after the bottom portion passes through the extraction hole, the electrode terminal can rotate relative to the base, so that the bottom portion is locked in the opening of the extraction hole in a direction perpendicular to the base portion. The upper portion and the bottom portion are respectively located on both sides of the base portion, and the waist portion is passed through the extraction hole. During installation, after the bottom portion passes through the extraction hole, the electrode terminal is rotated so that the bottom portion cannot be separated from the extraction hole, thereby completing the positioning and assembly of the electrode terminal and the base portion. The entire assembly process is relatively simple, the structure is simple, and the cost is low." During use, the design of the extraction hole and the rotating electrode terminal can complete the positioning and assembly of the electrode terminal and the base portion. However, during use, the installation method of the rotating electrode terminal is not stable, and the explosion-proof device and the cover plate base are designed as an integrated whole, which has high maintenance costs.

[0004] Therefore, we provide a battery cover structure to solve the above problems. Utility Model Content

[0005] The purpose of the present utility model is to provide a battery cover structure to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a battery cover structure, comprising a cover base and a connecting mechanism, wherein the connecting mechanism is installed on the upper and lower sides of the cover base;

[0007] The connecting mechanism includes a connecting component and a fuse component. The connecting component is installed on the inner side of the cover base, and the fuse component is installed on the upper side of the right end of the cover base.

[0008] Preferably, the connecting assembly includes a connecting hole, a connecting screw, a connecting plate, a limiting strip, a sealing gasket and a connecting terminal. A connecting hole is opened on the inner side of the cover base, a connecting screw is installed on the inner side of the connecting hole, a connecting plate is installed on the lower side of the connecting screw, a limiting strip is provided on the outer side of the connecting plate on the lower side of the cover base, a sealing gasket is installed on the outer side of the connecting screw on the upper side of the cover base, and a connecting terminal is installed on the outer top end of the connecting screw.

[0009] Preferably, the outer dimension of the connecting piece is comparable to the inner dimension of the limiting clip, the outer dimension of the connecting screw is slightly smaller than the inner dimension of the sealing gasket, and the connecting screw and the connecting terminal are threadedly connected.

[0010] Preferably, the fuse assembly includes a bayonet, a fuse bar, a connecting socket and an electrode connector. A bayonet is provided on the right side of the connecting terminal, a fuse bar is installed on the inner side of the bayonet, a connecting socket is installed on the outer side of the right end of the fuse bar, and an electrode connector is installed on the right side of the connecting socket.

[0011] Preferably, the bayonet and the fuse bar are movably connected, the fuse bar and the connecting socket are movably connected, the bayonet is made of conductive elastic material, and the electrode connector and the cover plate base are fixedly connected.

[0012] Preferably, the connection assembly and the fuse assembly are movably connected, and two groups of the connection assembly and the fuse assembly are symmetrically arranged about the center line of the cover plate base.

[0013] Preferably, an explosion-proof component is provided on the middle inner side of the cover plate base, and the explosion-proof component includes an explosion-proof tube, an explosion-proof port, a piston plate, a connecting rod, a piston bottom plate, a pressure port and a spring. An explosion-proof tube is installed on the middle inner side of the cover plate base, an explosion-proof port is provided on the upper side of the explosion-proof tube, a piston plate is installed on the upper side of the explosion-proof port, a connecting rod is installed on the inner side of the explosion-proof port, a piston bottom plate is installed on the lower side of the connecting rod, a pressure port is provided on the inner side of the piston bottom plate, and a spring is installed between the explosion-proof tube and the piston bottom plate.

[0014] Preferably, the explosion-proof opening and the piston plate are of comparable size, and the piston plate and the connecting rod are fixedly connected.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. Through the setting of the explosion-proof component, the explosion-proof port and the piston piece fit tightly under the elastic force of the spring, ensuring that the battery cover remains sealed under normal use. When the internal temperature of the battery rises due to overcharging, short circuit, etc., resulting in a rapid increase in internal pressure, the piston piece will be pushed up by the internal pressure when the preset bursting pressure is reached to release the internal pressure, reducing the risk of battery damage. When the pressure is released, the elastic action of the spring presses the piston piece back to the explosion-proof port, restoring the entire battery cover to a sealed state, reducing the risk of battery damage and reducing battery maintenance costs.

[0017] 2. Through the setting of the connecting mechanism, when the battery cover is used, the connecting piece is connected to the battery cell inside the battery. The connecting screw, connecting piece and connecting terminal are all made of conductive materials. The connecting piece is inserted into the limit card strip to facilitate the connection terminal to be tightened on the outside of the connecting screw. The connecting terminal tightly installs the connecting piece, the cover base and the sealing gasket to ensure the sealing of the battery cover. When the battery cover is used, the fuse bar can be used to melt the fuse bar when the battery is overheated or short-circuited, thereby protecting the circuit and battery. When the circuit fails and the fuse bar melts, the fuse bar can be removed from the card slot and the connecting socket for replacement, which facilitates battery maintenance, saves costs and saves manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the connection assembly structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the installation structure of the connection component of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the fuse assembly of the present utility model;

[0022] Figure 5 This is a schematic diagram of the explosion-proof component structure of the utility model.

[0023] Numbers in the figure: 1. Cover base; 2. Connecting mechanism; 21. Connecting assembly; 211. Connecting hole; 212. Connecting screw; 213. Connecting plate; 214. Limiting clip; 215. Sealing gasket; 216. Connecting terminal; 22. Fuse assembly; 221. Bayonet; 222. Fuse strip; 223. Connecting socket; 224. Electrode connector; 3. Explosion-proof assembly; 31. Explosion-proof pipe; 32. Explosion-proof port; 33. Piston plate; 34. Connecting rod; 35. Piston base plate; 36. Pressure port; 37. Spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Example 1

[0026] See also Figure 1-5 As shown, the utility model provides a technical solution: a battery cover structure, comprising a cover base 1 and a connecting mechanism 2, wherein the connecting mechanism 2 is installed on the upper and lower sides of the cover base 1;

[0027] The connecting mechanism 2 includes a connecting component 21 and a fuse component 22 . The connecting component 21 is installed on the inner side of the cover base 1 , and the fuse component 22 is installed on the upper side of the right end of the cover base 1 .

[0028] Furthermore, the connecting component 21 includes a connecting hole 211, a connecting screw 212, a connecting piece 213, a limiting clip 214, a sealing gasket 215 and a connecting terminal 216. A connecting hole 211 is opened on the inner side of the cover base 1, and a connecting screw 212 is installed on the inner side of the connecting hole 211. A connecting piece 213 is installed on the lower side of the connecting screw 212. A limiting clip 214 is provided on the lower side of the cover base 1, located on the outer side of the connecting piece 213. A sealing gasket 215 is installed on the upper side of the cover base 1, located on the outer side of the connecting screw 212. A connecting terminal 216 is installed on the outer top end of the connecting screw 212. When the battery cover is used, the connecting piece 213 connects the battery cell inside the battery. The connecting screw 212, the connecting piece 213 and the connecting terminal 216 are all made of conductive materials.

[0029] Furthermore, the outer dimension of the connecting piece 213 is comparable to the inner dimension of the limiting strip 214, the outer dimension of the connecting screw 212 is slightly smaller than the inner dimension of the sealing gasket 215, and the connecting screw 212 and the connecting terminal 216 are threadedly connected. When the battery cover is used, the connecting piece 213 is inserted into the limiting strip 214 to facilitate tightening the connecting terminal 216 to the outer side of the connecting screw 212. The connecting terminal 216 tightly installs the connecting piece 213, the cover base 1 and the sealing gasket 215, thereby ensuring the sealing of the battery cover.

[0030] Furthermore, the fuse assembly 22 includes a bayonet 221, a fuse bar 222, a connecting socket 223 and an electrode connector 224. The bayonet 221 is provided on the right side of the connecting terminal 216, the fuse bar 222 is installed on the inner side of the bayonet 221, the connecting socket 223 is installed on the outer side of the right end of the fuse bar 222, and the electrode connector 224 is installed on the right side of the connecting socket 223. When the battery cover is used, the fuse bar 222 can be used to melt the fuse bar 222 when the battery is overheated or short-circuited, thereby protecting the circuit and battery.

[0031] Furthermore, there is a movable connection between the bayonet 221 and the fuse bar 222, and a movable connection between the fuse bar 222 and the connecting socket 223. The bayonet 221 is made of conductive elastic material, and the electrode connector 224 and the cover base 1 are fixedly connected. When the battery cover is used, when the circuit fails and the fuse bar 222 melts, the fuse bar 222 can be removed from the bayonet 221 and the connecting socket 223 for replacement, which facilitates battery maintenance, saves costs, and saves manpower.

[0032] Furthermore, the connection component 21 and the fuse component 22 are movably connected, and two groups of the connection component 21 and the fuse component 22 are symmetrically arranged about the center line of the cover base 1. The movable connection between the connection component 21 and the fuse component 22 is conducive to the rapid replacement of damaged parts and saves maintenance costs.

[0033] Example 2

[0034] See also Figure 1 、 Figure 3 and Figure 5 As shown, in contrast to Example 1, as another embodiment of the present invention, an explosion-proof component 3 is provided on the middle inner side of the cover base 1, and the explosion-proof component 3 includes an explosion-proof tube 31, an explosion-proof port 32, a piston plate 33, a connecting rod 34, a piston bottom plate 35, a pressure port 36 and a spring 37. An explosion-proof tube 31 is installed on the middle inner side of the cover base 1, an explosion-proof port 32 is provided on the upper side of the explosion-proof tube 31, a piston plate 33 is installed on the upper side of the explosion-proof port 32, a connecting rod 34 is installed on the inner side of the explosion-proof port 32, a piston bottom plate 35 is installed on the lower side of the connecting rod 34, and a piston bottom plate 35 is opened on the inner side of the piston bottom plate 35. There is a pressure port 36, and a spring 37 is installed between the explosion-proof tube 31 and the piston base plate 35. When the internal temperature of the battery rises due to overcharging, short circuit or other reasons, causing the internal pressure to increase rapidly, the piston plate 33 will be pushed up by the internal pressure when the preset bursting pressure is reached. This method allows the internal pressure to be released, reducing the risk of battery damage. When the pressure is released, the elastic action of the spring 37 presses the piston base plate 35 downward, pressing the piston plate 33 back to the explosion-proof port 32, so that the entire battery cover is restored to a sealed state, reducing the risk of battery damage and reducing battery maintenance costs.

[0035] Furthermore, the explosion-proof opening 32 and the piston plate 33 are of comparable size, the piston plate 33 and the connecting rod 34 are fixedly connected, and the explosion-proof opening 32 and the piston plate 33 fit tightly under the elastic force of the spring 37, ensuring that the battery cover remains sealed under normal use.

[0036] Working principle: First, move a battery cover structure to the working position. When in use, in the first step, insert the connecting screw 212 into the connecting hole 211, and place the sealing gasket 215 between the connecting terminal 216 and the cover base 1. In the second step, tighten the connecting terminal 216, and tightly install the connecting piece 213, the cover base 1 and the sealing gasket 215. In the third step, insert the fuse bar 222 into the bayonet 221 and the connecting socket 223. This completes the use process of a battery cover structure.

[0037] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A battery cover structure, comprising a cover base (1) and a connecting mechanism (2), characterized in that: Connecting mechanisms (2) are installed on the upper and lower sides of the cover plate base (1); The connecting mechanism (2) comprises a connecting assembly (21) and a fuse assembly (22); the connecting assembly (21) is installed on the inner side of the cover base (1); and the fuse assembly (22) is installed on the upper side of the right end of the cover base (1).

2. A battery cover structure according to claim 1, characterized in that: The connecting assembly (21) comprises a connecting hole (211), a connecting screw (212), a connecting piece (213), a limiting clamping strip (214), a sealing gasket (215) and a connecting terminal (216); a connecting hole (211) is provided on the inner side of the cover base (1); a connecting screw (212) is installed on the inner side of the connecting hole (211); a connecting piece (213) is installed on the lower side of the connecting screw (212); a limiting clamping strip (214) is provided on the lower side of the cover base (1) on the outer side of the connecting piece (213); a sealing gasket (215) is installed on the upper side of the cover base (1) on the outer side of the connecting screw (212); and a connecting terminal (216) is installed on the outer top end of the connecting screw (212).

3. The battery cover structure according to claim 2, characterized in that: The outer dimension of the connecting piece (213) is equivalent to the inner dimension of the limiting clamping strip (214), the outer dimension of the connecting screw (212) is slightly smaller than the inner dimension of the sealing gasket (215), and the connecting screw (212) and the connecting terminal (216) are threadedly connected.

4. The battery cover structure according to claim 2, characterized in that: The fuse assembly (22) comprises a bayonet (221), a fuse bar (222), a connection socket (223) and an electrode connector (224); the bayonet (221) is provided on the right side of the connection terminal (216); the fuse bar (222) is installed on the inner side of the bayonet (221); the connection socket (223) is installed on the outer side of the right end of the fuse bar (222); and the electrode connector (224) is installed on the right side of the connection socket (223).

5. The battery cover structure according to claim 4, characterized in that: The bayonet (221) and the fuse bar (222) are movably connected, the fuse bar (222) and the connection socket (223) are movably connected, the bayonet (221) is made of a conductive elastic material, and the electrode connector (224) and the cover plate base (1) are fixedly connected.

6. The battery cover structure according to claim 1, characterized in that: The connection assembly (21) and the fuse assembly (22) are movably connected, and two groups of the connection assembly (21) and the fuse assembly (22) are symmetrically arranged about the center line of the cover plate base (1).

7. The battery cover structure according to claim 1, characterized in that: An explosion-proof assembly (3) is provided on the inner middle side of the cover plate base (1), and the explosion-proof assembly (3) includes an explosion-proof tube (31), an explosion-proof opening (32), a piston plate (33), a connecting rod (34), a piston bottom plate (35), a pressure port (36) and a spring (37). An explosion-proof tube (31) is installed on the inner middle side of the cover plate base (1), an explosion-proof opening (32) is provided on the upper side of the explosion-proof tube (31), a piston plate (33) is installed on the upper side of the explosion-proof opening (32), a connecting rod (34) is installed on the inner side of the explosion-proof opening (32), a piston bottom plate (35) is installed on the lower side of the connecting rod (34), a pressure port (36) is provided on the inner side of the piston bottom plate (35), and a spring (37) is installed between the explosion-proof tube (31) and the piston bottom plate (35).

8. The battery cover structure according to claim 7, characterized in that: The explosion-proof opening (32) and the piston plate (33) have comparable sizes, and the piston plate (33) and the connecting rod (34) are fixedly connected.

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