Lead-acid storage battery

Abstract

The lead-acid storage battery comprises a battery shell, a battery cover is fixedly connected to the upper end of the battery shell, a filling groove is formed in the middle of the battery cover, a flow guide pipe is arranged below the filling groove, a sealing device is arranged at the lower end of the flow guide pipe, and a through hole is formed in the side wall of the lower portion of the flow guide pipe. According to the invention, the diversion pipe is arranged in the storage battery, the accommodating bridge is used at the bottom, and the partition plate and the polar plate are protected, so that partition plate breakage caused by filling of sulfuric acid electrolyte and impurity mixing in the manufacturing process are avoided, and the risks of short circuit and large self-discharge of the battery are greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of lead-acid battery technology, and more particularly to a lead-acid battery. Background Technology

[0002] The existing method for adding sulfuric acid electrolyte to valve-regulated sealed lead-acid batteries involves vacuum filling. The high liquid flow rate during sulfuric acid filling increases the risk of separator rupture and the introduction of impurities from the manufacturing process, thus increasing the risk of short circuits and high self-discharge. Summary of the Invention

[0003] To address the aforementioned problems, this invention discloses a lead-acid battery, comprising a battery casing, a battery cover fixedly connected to the upper end of the battery casing, a filling groove provided in the middle of the battery cover, and a guide pipe provided below the filling groove. During battery production, after the battery casing and battery cover are thermally fused together, sulfuric acid electrolyte needs to be added to the battery casing, and this addition is done by injecting it into the filling groove.

[0004] The lower end of the guide tube is sealed, and a through hole is provided on the lower side wall. During the filling process, the sulfuric acid electrolyte is delivered from the side wall opening, preventing the sulfuric acid from impacting the structure below and causing damage, thereby improving the reliability of the battery.

[0005] The battery casing has a housing bridge at its bottom interior, and above the housing bridge are spaced-above partitions and electrode plates. The housing bridge provides support for the partitions and electrode plates, and to a certain extent, provides cushioning and shock absorption.

[0006] The housing bridge includes a plate with several through holes and several supporting legs at its bottom, the supporting legs being in an inverted V-shape. The supporting legs create a hollow space at the bottom of the plate, while the through holes facilitate the vertical flow of sulfuric acid electrolyte. For example, during the filling process, the sulfuric acid electrolyte passes through the gaps between the battery casing, separator, and electrode plates to reach the bottom of the housing bridge. Then, the sulfuric acid electrolyte overflows from the through holes and soaks the separator and electrode plates from below.

[0007] A sealing cap is provided at the filling slot.

[0008] The beneficial effects of this invention are as follows:

[0009] 1. By installing a current-conducting pipe inside the battery and using a body bridge at the bottom to protect the separator and plates, the risk of separator breakage due to the addition of sulfuric acid electrolyte and the introduction of impurities during the manufacturing process is greatly reduced.

[0010] 2. For cases where the bottom of the long plate is not properly immersed in sulfuric acid electrolyte when adding sulfuric acid electrolyte, a retainer bridge is placed at the bottom to facilitate the electrolyte to penetrate the plate more easily when adding sulfuric acid electrolyte. This ensures the amount of electrolyte in the battery, reduces the risk of short circuits in the electrode group caused by grid growth, and extends the service life of the battery. Attached Figure Description

[0011] Figure 1 This is a cross-sectional schematic diagram of the present invention;

[0012] Figure 2 This is a cross-sectional schematic diagram of the upper cover of the present invention;

[0013] Figure 3 This is a top view of the shelter bridge of the present invention;

[0014] Figure 4 This is a side view of the shelter bridge of the present invention.

[0015] List of reference numerals in the attached diagram:

[0016] 1. Battery housing bridge; 2. Battery casing; 3. Separator; 4. Electrode plates; 5. Diverter tube; 6. Battery cover; 7. Sealing cover; 8. Filling slot;

[0017] 11. Plate; 12. Through hole; 13. Support leg. Detailed Implementation

[0018] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0019] like Figures 1 to 4 As shown, a lead-acid battery includes a battery casing 2, which has a cuboid structure. A battery cover 6 is fixedly connected to the upper end of the battery casing 2. After the internal components of the battery casing 2 are assembled, the battery cover 6 is heat-fused to the battery casing 2. A filling groove 8 is provided in the middle of the battery cover 6, through which sulfuric acid electrolyte is injected. A guide pipe 5 is provided below the filling groove 8, which changes the flow direction of the sulfuric acid electrolyte.

[0020] The lower end of the guide tube 5 is provided with a sealing device, and a through hole 12 is opened on the lower side wall. When adding sulfuric acid electrolyte, its flow direction is perpendicular to the side wall of the battery case 2, so as to avoid direct impact on the structure below during the filling process.

[0021] The battery casing 2 has a housing bridge 1 at its bottom interior, and a partition 3 and an electrode plate 4 are spaced apart above the housing bridge 1. The housing bridge 1 supports the partition 3 and the electrode plate 4.

[0022] The housing bridge 1 includes a plate 11 with several through holes 12 to facilitate the overflow of sulfuric acid electrolyte and to wet the electrode plate 4 from below. Several support feet 13 are provided below the plate 11, and the support feet 13 are in an inverted V shape. The arrangement of the support feet 13 leaves space between the plate 11 and the battery casing 2.

[0023] A sealing cap 7 is provided at the filling groove 8. The sealing cap 7 is used to seal the filling groove 8.

[0024] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features.

Claims

1. A lead-acid battery, characterized in that, Includes a battery casing (2), with a battery cover (6) fixedly connected to the upper end of the battery casing (2), a filling groove (8) provided in the middle of the battery cover (6), and a guide pipe (5) provided below the filling groove (8); The lower end of the guide tube (5) is provided with a sealing device, and a through hole (12) is provided on the lower side wall.

2. The lead-acid battery according to claim 1, characterized in that: The battery casing (2) has a housing bridge (1) at its bottom interior, and a partition (3) and an electrode plate (4) are spaced apart above the housing bridge (1).

3. A lead-acid battery according to claim 2, characterized in that: The bridge (1) includes a plate (11), which has several through holes (12) and several support feet (13) below the plate (11), and the support feet (13) are in an inverted V shape.

4. A lead-acid battery according to claim 1, characterized in that: A sealing cap (7) is provided at the filling groove (8).

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