Lead-acid battery

Abstract

The utility model relates to the field of storage batteries, in particular to a lead-acid battery, and mainly solves the problem that in the prior art, a battery box cover piece is poor in disassembly convenience. Comprising a battery box, a middle cover, an upper cover, a plurality of safety valves, a plurality of positive plate groups, a plurality of negative plate groups, a partition plate, a first metal connecting plate, a second metal connecting plate, a positive connecting rod, a negative connecting rod, a positive connector and a negative connector, the second metal connecting piece is connected with the negative plate sets, the negative connecting rod is connected with the second metal connecting piece, the positive connector and the negative connector are fixedly arranged on the upper cover, a buckle structure is arranged on the upper portion of the battery box, a clamping groove structure is arranged on the upper cover, and the upper cover is connected with the battery box in a buckled mode through matching of the buckle structure and the clamping groove structure. And when the upper cover covers the battery box, the positive connector is connected with the positive connecting rod, and the negative connector is connected with the negative connecting rod.

Description

Technical Field

[0001] This utility model relates to the field of storage batteries, and more particularly to a lead-acid battery. Background Technology

[0002] Existing 12V valve-regulated sealed lead-acid batteries use 6V cells connected in series, with each cell having a voltage of 2V. Each cell has an individual safety valve, which releases gas when the internal pressure of the battery is high, preventing external gas from entering the battery. During the lead-acid battery production process, there is a certain probability of poor sealing at the capping stage. One cause is under-melting of the capping protrusions due to ultrasonic welding, resulting in poor fusion. Another cause is uneven application of glue by hand, and temperature differences during use can lead to unevenness and lifting. These issues have adverse effects on the battery during use, such as uneven opening and closing of the valves in each cell leading to inconsistent water loss, causing individual cells to lag behind and affecting the overall lifespan of the battery pack. Furthermore, after-sales repair of the battery requires prying open the capping, which is damaged and cannot be reused, resulting in waste.

[0003] For example, patent publication number CN206602131 U discloses a valve-regulated sealed lead-acid battery cover, which includes a cover plate and a middle cover. The middle cover has multiple middle cover safety valve seats, which are interconnected through connecting grooves and equipped with safety valves. The cover plate is embedded in the corresponding stepped groove of the middle cover, sealing the safety valves inside the middle cover. The middle cover has a valve seat, which is connected to the middle cover safety valve seat through a vent groove. The cover plate has a cover plate safety valve seat, on which a cover plate safety valve is installed. The position of the cover plate safety valve seat matches the position of the valve seat and is inserted into it. During battery after-sales repair, the cover plate must be pried open, and the cover plate is damaged and cannot be reused, resulting in waste. Utility Model Content

[0004] Therefore, in view of the above problems, this utility model provides a lead-acid battery, which mainly solves the problem of poor ease of disassembly of the battery box cover in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A lead-acid battery includes a battery case, a middle cover, a top cover, several safety valves, several groups of positive electrode plates, several groups of negative electrode plates, separators, a first metal connecting piece, a second metal connecting piece, a positive electrode connecting rod, a negative electrode connecting rod, a positive electrode connector, and a negative electrode connector. The battery case has at least three chambers. Each group of positive electrode plates is disposed in one of the chambers, and each group of positive electrode plates has at least three positive electrode plates. Each group of negative electrode plates is disposed in one of the chambers, and each group of negative electrode plates has at least three negative electrode plates. Separators are disposed between adjacent positive and negative electrode plates within each chamber. The chambers are filled with electrolyte. The middle cover covers each chamber. The safety valves are... The valve is located on the middle cover and communicates with each chamber. The middle cover has a filling port that communicates with each chamber. The first metal connecting piece connects to each group of positive electrode plates. The positive electrode connecting rod is connected to the first metal connecting piece. The second metal connecting piece connects to each group of negative electrode plates. The negative electrode connecting rod is connected to the second metal connecting piece. The positive electrode connector and the negative electrode connector are fixed on the upper cover. The upper part of the battery box has a buckle structure. The upper cover has a slot structure. The upper cover is fastened to the battery box through the cooperation of the buckle structure and the slot structure. When the upper cover is on the battery box, the positive electrode connector is connected to the positive electrode connecting rod, and the negative electrode connector is connected to the negative electrode connecting rod.

[0007] Furthermore, the buckle structure includes a through groove on the upper part of the battery box, at least one pressing groove communicating with the lower edge of the through groove, a connecting piece horizontally mounted on the through groove, a pressing piece extending from the lower edge of the connecting piece into the pressing groove, a locking piece extending upward from the upper edge of the connecting piece, and a first protrusion and a second protrusion spaced vertically on the inner surface of the locking piece. The connecting piece, pressing piece, and locking piece are integrally connected to the battery box.

[0008] Furthermore, reinforcing ribs are distributed vertically on the outer surfaces of the pressing piece, connecting piece, and locking piece.

[0009] Furthermore, the upper cover includes a cover plate and a side plate extending upward from the periphery of the cover body, and the slot structure is provided on the side plate.

[0010] Furthermore, the card slot structure includes a first card slot and a second card slot that are spaced apart on the side plate in a vertical direction. The first card slot is located above the second card slot, and the lower edge of the second card slot is through-connected. When the top cover is placed on the battery box, the first protrusion is embedded in the first card slot, the second protrusion is embedded in the second card slot, and the lower end of the second protrusion extends out of the second card slot.

[0011] Furthermore, the number of positive electrode plates in each positive electrode plate group is even, the number of negative electrode plates in each negative electrode plate group is odd, and the number of positive electrode plates in each positive electrode plate group is one less than the number of negative electrode plates in each negative electrode plate group.

[0012] By adopting the aforementioned technical solution, the beneficial effects of this utility model are as follows: This lead-acid battery improves sealing by covering each chamber on the battery box with a middle cover, thus preventing electrolyte leakage. The filling port on the middle cover facilitates electrolyte addition, and the safety valve allows gas to escape from the chambers, improving safety. Furthermore, the slot structure on the top cover engages with the snap-fit ​​structure on the battery box, allowing the top cover to be securely connected to the battery box, improving the ease of disassembly and maintenance of the top cover, facilitating battery repair and maintenance, preventing damage during disassembly, and reducing operating costs. Additionally, the positive and negative connecting rods on the middle cover cooperate with the positive and negative terminals on the top cover. When the top cover is on the battery box, the positive terminal connects to the positive connecting rod, and the negative terminal connects to the negative connecting rod, facilitating the closing of the top cover and improving safety during use. Attached Figure Description

[0013] Figure 1 This is a front view structural diagram of an embodiment of the present utility model;

[0014] Figure 2 This is a cross-sectional view of the structure along the transverse direction in an embodiment of the present invention;

[0015] Figure 3 This is a top view of the structure of this utility model embodiment without the top cover;

[0016] Figure 4 This is a cross-sectional view of the structure along the longitudinal direction in an embodiment of this utility model;

[0017] Figure 5 yes Figure 4 A magnified view of a portion of point A in the middle. Detailed Implementation

[0018] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0019] The embodiment of this utility model is as follows:

[0020] refer to Figures 1 to 5As shown, a lead-acid battery includes a battery case 1, a middle cover 2, a top cover 3, six safety valves 4, six positive electrode groups 5, six negative electrode groups 6, a separator 7, a first metal connecting piece 8, a second metal connecting piece 9, a positive electrode connecting rod 10, a negative electrode connecting rod 11, a positive electrode connector 12, and a negative electrode connector 13. The battery case 1 has six chambers 14, and each of the positive electrode groups 5 is disposed in each chamber 14. Each of the positive electrode groups 5 has at least three positive electrode pieces 51. Preferably, the positive electrode pieces 51 of each of the positive electrode groups 5 are... The number of electrode plates 51 is even. Preferably, each positive electrode plate group 5 has four positive electrode plates 51. Each negative electrode plate group 6 is disposed in each chamber 14, and each negative electrode plate group 6 has at least three negative electrode plates 61. Preferably, the number of negative electrode plates 61 in each negative electrode plate group 6 is odd. Preferably, each negative electrode plate group 6 has five negative electrode plates 61, so that the number of positive electrode plates 51 in each positive electrode plate group 5 is one less than the number of negative electrode plates 61 in each negative electrode plate group 6, to avoid... Uneven discharge causes the electrode plates to warp. Each of the aforementioned separators 7 is located between adjacent positive electrode plates 51 and negative electrode plates 61 within the chamber 14. The chamber 14 is filled with electrolyte. A middle cover 2 is placed over each chamber 14. Each of the aforementioned safety valves 4 is located on the middle cover 2 and communicates with each chamber 14. The middle cover 2 has a filling port 15 communicating with each chamber 14. The first metal connecting piece 8 connects each group of positive electrode plates 5. The positive electrode connecting rod 10 is connected to the first metal connecting piece 8. The second metal connecting... The plate 9 connects to each group of negative electrode plates 6. The negative electrode connecting rod 11 is connected to the second metal connecting plate 9. The positive electrode connector 12 and the negative electrode connector 13 are respectively fixed on the upper cover 3. The upper part of the battery box 1 is provided with a buckle structure 20. The upper cover 3 is provided with a slot structure 30. The upper cover 3 is fastened to the battery box 1 through the cooperation of the buckle structure 20 and the slot structure 30. When the upper cover 3 is placed on the battery box 1, the positive electrode connector 12 is connected to the positive electrode connecting rod 10, and the negative electrode connector 13 is connected to the negative electrode connecting rod 11.

[0021] This lead-acid battery features a middle cover 2 that covers each chamber 14 on the battery box 1, improving sealing and preventing electrolyte leakage. The middle cover 2 also has a filling port 15 for easy electrolyte addition, and a safety valve 4 allows gas to escape from the chambers 14, enhancing safety. The upper cover 3 has a slot structure 30 that engages with a snap-fit ​​structure 20 on the battery box 1, allowing for easy disassembly and maintenance, reducing the risk of damage and lowering operating costs. Furthermore, the positive and negative connecting rods 10 and 11 on the middle cover 2 cooperate with the positive and negative terminals 12 and 13 on the upper cover 3. When the upper cover 3 is on the battery box 1, the positive terminal 12 connects to the positive connecting rod 10, and the negative terminal 13 connects to the negative connecting rod 11, facilitating easy closing and enhancing safety.

[0022] Specifically, the upper cover 3 includes a cover plate 31 and a side plate 32 extending upward from the periphery of the cover 31. The slot structure 30 is provided on the side plate 32, and the buckle structure 20 is distributed on the front and rear sides of the battery box 1. The buckle structure 20 includes a through groove 201 provided on the upper part of the battery box 1, two pressing grooves 202 communicating with the lower edge of the through groove 201, a connecting piece 203 horizontally mounted on the through groove 201 in the transverse direction, and a lower part of the connecting piece 203... A pressing piece 204 extends into the pressing groove 202 from the edge, a retaining piece 205 extends upward from the upper edge of the connecting piece 203, and a first protrusion 206 and a second protrusion 207 are arranged vertically on the inner surface of the retaining piece 205. The connecting piece 203, the pressing piece 204, and the retaining piece 205 are integrally connected to the battery box 1. Reinforcing ribs 208 are distributed vertically on the outer surfaces of the pressing piece 204, the connecting piece 203, and the retaining piece 205.

[0023] Furthermore, the slot structure 30 includes a first slot 301 and a second slot 302 vertically spaced on the side plate 32. The first slot 301 is located above the second slot 302, and the lower edge of the second slot 302 is through-hole. When the top cover 3 is placed on the battery box 1, the first protrusion 206 is embedded in the first slot 301, and the second protrusion 207 is embedded in the second slot 302, with the lower end of the second protrusion 207 extending out of the second slot 302, making the connection between the top cover 3 and the battery box 1 secure. During disassembly, pressing the two pressing tabs 204 simultaneously will loosen the connection. The movable connecting piece 203 is slightly twisted, causing the retaining piece 205 connected to the connecting piece 203 to swing. This causes the first protrusion 206 at the upper end to disengage from the first slot 301, and the lower end of the second protrusion 207 abuts against the lower edge of the second slot 302, providing an upward force to lift the upper cover 3, facilitating the separation of the upper cover 3 and improving the convenience of disassembly. During installation, the upper cover 3 is pressed into the battery box 1 facing each other, and the first protrusion 206 and the second protrusion 207 abut against the side of the upper cover 3 respectively, causing the retaining piece 205 to swing outward and deform, thereby achieving a fastening, which is convenient to use.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0027] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A lead-acid battery, characterized in that: The battery box includes a battery compartment, a middle cover, a top cover, several safety valves, several groups of positive electrode plates, several groups of negative electrode plates, separators, a first metal connecting piece, a second metal connecting piece, a positive electrode connecting rod, a negative electrode connecting rod, a positive electrode connector, and a negative electrode connector. The battery compartment has at least three chambers. Each group of positive electrode plates is located within a chamber, and each group has at least three positive electrode plates. Each group of negative electrode plates is located within a chamber, and each group has at least three negative electrode plates. Separators are located between adjacent positive and negative electrode plates within each chamber. The chambers are filled with electrolyte. The middle cover covers each chamber, and each safety valve is located within the middle cover. The cover is closed and communicates with each chamber. The middle cover has a filling port that communicates with each chamber. The first metal connecting piece connects to each group of positive electrode plates. The positive electrode connecting rod is connected to the first metal connecting piece. The second metal connecting piece connects to each group of negative electrode plates. The negative electrode connecting rod is connected to the second metal connecting piece. The positive electrode connector and the negative electrode connector are fixed on the upper cover. The upper part of the battery box has a buckle structure. The upper cover has a slot structure. The upper cover is fastened to the battery box through the cooperation of the buckle structure and the slot structure. When the upper cover is placed on the battery box, the positive electrode connector is connected to the positive electrode connecting rod, and the negative electrode connector is connected to the negative electrode connecting rod.

2. The lead-acid battery according to claim 1, characterized in that: The buckle structure includes a through groove on the upper part of the battery box, at least one pressing groove communicating with the lower edge of the through groove, a connecting piece horizontally mounted on the through groove, a pressing piece extending from the lower edge of the connecting piece into the pressing groove, a locking piece extending upward from the upper edge of the connecting piece, and a first protrusion and a second protrusion spaced vertically on the inner surface of the locking piece. The connecting piece, pressing piece, and locking piece are integrally connected to the battery box.

3. The lead-acid battery according to claim 2, characterized in that: The pressing plate, connecting plate, and locking plate are provided with reinforcing ribs distributed vertically on their outer surfaces.

4. The lead-acid battery according to claim 2 or 3, characterized in that: The top cover includes a cover plate and a side plate extending upward from the periphery of the cover body, and the slot structure is provided on the side plate.

5. The lead-acid battery according to claim 4, characterized in that: The slot structure includes a first slot and a second slot spaced vertically on the side plate. The first slot is located above the second slot, and the lower edge of the second slot is through. When the top cover is placed on the battery box, the first protrusion is embedded in the first slot, the second protrusion is embedded in the second slot, and the lower end of the second protrusion extends out of the second slot.

6. The lead-acid battery according to claim 1, characterized in that: The number of positive electrode plates in each positive electrode plate group is even, the number of negative electrode plates in each negative electrode plate group is odd, and the number of positive electrode plates in each positive electrode plate group is one less than the number of negative electrode plates in each negative electrode plate group.

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