CN218602521U

CN218602521U - Lead-acid storage battery

Info

Publication number: CN218602521U
Application number: CN202222576374.0U
Authority: CN
Inventors: 陈苏祥; 谢卫东
Original assignee: Wolong Electric Group Zhejiang Dengta Power Source Co ltd; Wolong Electric Group Co Ltd
Current assignee: Wolong Electric Group Zhejiang Dengta Power Source Co ltd; Wolong Electric Drive Group Co Ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-03-10
Anticipated expiration: 2032-09-28

Abstract

The utility model relates to a lead-acid storage battery, including the battery case, set up busbar and polar plate in the battery case, the polar plate top sets up utmost point ear, and utmost point ear and the bottom surface welded fastening of busbar, the bottom surface of busbar and utmost point ear and the junction of busbar are by sealed gluey cladding, and the outside cover of busbar is equipped with the protective sheath, and the protective sheath covers the top surface and the anchor ring of busbar, and the protective sheath cramps the busbar. The utility model discloses a lead acid battery is equipped with the protective sheath at the busbar outside cover to coating sealed glue on the bottom surface that busbar and utmost point ear link to each other, forming the anticorrosion protection to the busbar jointly through protective sheath and sealed glue, keeping apart busbar and electrolyte sulphuric acid completely, having avoided long-term use in-process, utmost point ear and busbar welding department cause both to break away from because of being corroded, have also avoided the busbar to be corroded the cracked condition appears, adopt the utility model discloses a design structure can increase the fastness of utmost point group to prolong the life of battery.

Description

Lead-acid storage battery

Technical Field

The utility model relates to a lead-acid storage battery.

Background

A lead-acid battery generally includes a battery case, a battery cover, and one or more electrode groups disposed in the battery case, where each electrode group includes a plurality of positive and negative plates overlapping each other, and the top ends of the positive and negative plates are provided with tabs, and each tab is connected to a bus bar by welding to collect current to an electrode terminal. In the process of welding and assembling the pole plates of the storage battery, tiny gaps are easily formed at the welding positions of the pole lugs and the bus bars, the gaps are easily and continuously corroded by electrolyte sulfuric acid in the using process of the storage battery to be enlarged, and finally the pole lugs and the bus bars are separated from each other, so that the storage capacity of the storage battery is reduced due to the reduction of the number of the pole plates, and even the storage battery is scrapped. In addition, the bus bar is sealed inside the battery shell and is constantly corroded by acid mist, when a seam appears at the welding position of the lug of the battery and the bus bar due to corrosion, the bus bar is easy to break along the seam, so that the capacity of the storage battery is suddenly reduced, and the open circuit failure of the storage battery can be caused.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a lead acid battery can keep apart busbar and utmost point ear and the sulphuric acid direct contact of electrolyte, has increased the fastness of utmost point group, can effectively prolong the life of battery.

In order to realize the above purpose, the utility model discloses the technical scheme who adopts is:

a lead-acid storage battery comprises a battery case, a bus bar and a polar plate, wherein the bus bar and the polar plate are arranged in the battery case; the bottom surface of the busbar and the welding positions of the lugs and the busbar are coated by the sealant, the protective sleeve is sleeved outside the busbar and covers the top surface and the annular surface of the busbar, and the protective sleeve hoops the busbar tightly.

Furthermore, the protective sheath adopts corrosion-resistant and have elastic material and make.

Further, the protective sheath adopts the rubber material to make.

Furthermore, the sealant is made of epoxy resin.

Furthermore, the surface of protective sheath also has sealed the cladding, and sealed glue on protective sheath surface links as an organic whole with sealed glue on the busbar bottom surface.

The utility model discloses a lead acid battery is equipped with the protective sheath at the busbar outside cover to coating sealed glue on the bottom surface that busbar and utmost point ear link to each other, forming the anticorrosion protection to the busbar jointly through protective sheath and sealed glue, keeping apart busbar and electrolyte sulphuric acid completely, avoided long-term use in-process, utmost point ear and busbar welding department cause both to break away from because of being corroded, also avoided the busbar to be corroded the problem that the fracture arouses to open circuit appears, adopt the utility model discloses a design structure can increase the fastness of utmost point group to prolong the life of battery.

Drawings

FIG. 1 is a partial structure diagram of the connection between the tab and the bus bar of the lead-acid battery in the embodiment.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

The present embodiment discloses a lead-acid storage battery, which is combined with the structure shown in fig. 1 (fig. 1 only shows the local structure inside the storage battery related to the technical improvement point of the present invention), the storage battery comprises a battery case, a bus bar 1 and a plurality of polar plates are arranged inside the battery case, the top end of each polar plate is respectively provided with a tab 2, and the tab 2 of the plurality of polar plates is connected with the bottom welding of the bus bar 1 to form a polar group. In order to prevent the welded position between the tab 2 and the bus bar 1 from being corroded by the electrolyte sulfuric acid for a long time and being separated, in this embodiment, the sealant 3 is coated on the entire bottom surface of the bus bar 1, so that the sealant 3 covers the welded position between the tab 2 and the bus bar 1. The sealant 3 is made of a corrosion-resistant material such as epoxy resin. In addition, the present embodiment further provides a protection cover 4 covering the bus bar 1, wherein the protection cover 4 is made of a material with acid and alkali corrosion resistance and elasticity, such as soft rubber. Have elastic protective sheath 4 and cover the top surface of busbar 1 and the anchor ring all around of busbar 1, protective sheath 4 can cramp busbar 1, and protective sheath 4 not only can protect busbar 1 to avoid its surface to be corroded by electrolyte sulphuric acid, can also effectively prevent that busbar 1 from appearing breaking into the problem that a plurality of parts break off each other because of being corroded.

To above-mentioned technical scheme's further optimal design, for avoiding protective sheath 4 elasticity variation after long-time the use, cause protective sheath 4 and busbar 1 surface between the clearance, this embodiment also is equipped with a layer of sealed glue (not drawn in the attached drawing) at the surface of protective sheath 4. The sealant on the outer surface of the protective sleeve 4 and the sealant 3 on the bottom surface of the busbar 1 can be formed simultaneously, so that the two are connected into a whole, for example: during the battery assembly, earlier establish protective sheath 4 at the outside cover of busbar 1, invert the open end of battery down, when adopting the encapsulating mode closing cap, utilize the encapsulating glue of closing cap and the contact of the battery open end of inversion, make glue overflow protective sheath 4 the surface and stretch to utmost point ear 2 and busbar 1 be connected the face on, can form even sealing glue layer as an organic whole from this, can realize better protective effect.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a lead-acid storage battery, includes the battery case, sets up busbar and polar plate in the battery case, and the polar plate top sets up utmost point ear, and utmost point ear and the bottom surface welded fastening of busbar, its characterized in that: the bottom surface of the busbar and the welding positions of the lugs and the busbar are coated by the sealant, the protective sleeve is sleeved outside the busbar and covers the top surface and the annular surface of the busbar, and the protective sleeve hoops the busbar tightly.

2. A lead-acid battery according to claim 1, characterized in that: the protective sheath adopts corrosion-resistant and have elastic material and make.

3. A lead-acid battery according to claim 2, characterized in that: the protective sleeve is made of rubber materials.

4. A lead-acid battery according to claim 1, characterized in that: the sealant is made of epoxy resin.

5. A lead-acid battery according to claim 1, characterized in that: the surface of protective sheath also the cladding has sealed glue, and the sealed glue of protective sheath surface is even as an organic whole with the sealed glue of busbar bottom surface.