Storage battery welding terminal and storage battery

Abstract

The utility model discloses a welding terminal for a storage battery. The welding terminal comprises a terminal head and a terminal sheet, the head of the terminal is cylindrical, and the top surface of the terminal is provided with a threaded wiring hole. The terminal sheet is sheet-shaped, and one end of the terminal sheet extends out of the bottom of the terminal head; when the terminal is used, the free end of the terminal sheet is fused and connected with a busbar, and the top of the terminal head extends into a glue groove of a battery cover. Compared with a traditional terminal, the burn-in terminal has the advantages that the later terminal welding process is reduced, manpower or material resources are saved, and the product reject ratio caused by welding is reduced. Compared with a traditional terminal, the length of the terminal piece is obviously reduced, and the weight can be reduced. A busbar pole is replaced by a terminal, so that the lead consumption of the busbar is reduced, and the specific capacity of the battery is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lead-acid batteries, and particularly relates to a battery welding terminal and a battery. Background Art

[0002] As the external output and input interface of the battery, the valve-regulated lead-acid battery terminal plays a very important role during the use of the battery. Currently, the commonly used terminals for power batteries usually need to be welded to the electrode posts protruding from the battery. Therefore, the terminal generally consists of a terminal head with threads and a terminal piece connecting the battery electrode post. Later, the connection between the battery terminal and the busbar electrode post is completed through manual or automatic welding.

[0003] The internal electrode group of the battery is connected and converged by a busbar. The output ends of the busbar are positive and negative electrode posts. After the battery cover is closed later, the electrode posts will protrude from the battery cover. At this time, only the electrode posts of the busbar are exposed. Then, the terminal is placed into the battery cover, and the electrode post passes through the electrode post hole in the middle of the terminal piece to make it protrude beyond the terminal plane. Later, the redundant exposed electrode post is melted by manual welding or automatic welding by equipment and welded to the terminal together to complete the welding. The terminal head serves as the outermost output port of the battery.

[0004] For example, the utility model with the authorization publication number CN209150209U discloses a battery terminal, which includes a base plate and a connecting column. The connecting column includes a base portion welded to the base plate and a head portion for connecting an external wire. The diameter of the head portion is larger than that of the base portion. The base plate is provided with a first assembly hole matching the base portion, and a positioning protrusion is provided on the periphery of the first assembly hole. Correspondingly, a positioning groove matching the positioning protrusion is provided on the outer peripheral surface of the base portion.

[0005] For another example, the utility model with the authorization publication number CN208315660U discloses a battery wiring terminal, which includes a first connecting portion for connecting the battery electrode post and a second connecting portion for connecting an external power supply wire. The first connecting portion is provided with a positioning hole matching the battery electrode post, and a convex edge surrounding the positioning hole is provided on the top edge of the first connecting portion.

[0006] In the prior art, the terminal and the busbar need to be welded later, which increases the welding defect rate and the labor or equipment cost. Moreover, since the terminal needs to be welded to the protruding electrode post, it is inevitable to lengthen the busbar and the electrode post, increasing the lead consumption cost of the battery. Summary of the Utility Model

[0007] Aiming at the above deficiencies in the prior art, the utility model provides a battery welding terminal and a battery.

[0008] The utility model first provides a battery welding terminal, which includes a terminal head and a terminal piece;

[0009] The terminal head is columnar, and its top surface has a threaded connection hole.

[0010] The terminal piece is sheet-shaped, and one end extends out from the bottom of the terminal head.

[0011] During use, the free end of the terminal piece is integrally connected to the bus bar, and the top of the terminal head extends into the terminal hole glue groove of the battery cover.

[0012] Preferably, the material of the battery welding terminal is copper.

[0013] Preferably, the terminal head and the terminal piece are integrally formed.

[0014] Preferably, the terminal piece is provided with connection holes that facilitate the inflow of lead liquid to enhance the connection strength between the battery welding terminal and the bus bar.

[0015] Preferably, the side wall of the terminal head is provided with an annular groove for enhancing the sealing effect between the battery welding terminal and the sealant when using sealant for sealing.

[0016] The present invention also provides a battery that uses the battery welding terminal. The battery welding terminal is integrally connected to the bus bar through the free end of the terminal piece, and the top of the terminal head extends into the glue groove of the battery cover.

[0017] Advantages of the present invention:

[0018] Compared with traditional terminals, the welding terminal reduces the later welding process of the terminal, saves labor or material resources, and reduces the defective rate of products caused by welding.

[0019] Compared with traditional terminals, the weight of the terminal is significantly reduced, and the weight can be reduced due to the obvious reduction in the length of the terminal piece.

[0020] The bus bar pole is replaced by the terminal, reducing the lead consumption of the bus bar and increasing the specific capacity of the battery. Description of the Drawings

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the battery welding terminal of the present invention.

[0022] Figure 2 It is a structural schematic diagram of a battery using the battery welding terminal of the present invention.

[0023] Figure 3 It is a structural schematic diagram of the welding terminal and the bus bar in a battery using the battery welding terminal of the present invention.

[0024] Figure 4This is a schematic diagram of the structure of the welded terminal of the storage battery of the present utility model after being connected to the bus bar.

[0025] Reference numerals:

[0026] Welded terminal 1, terminal head 11, terminal piece 12, threaded connection hole 13, connection hole 14, annular groove 15,

[0027] Battery cell 2, electrode group 3, electrode tab 4, bus bar 5, bus bar 6. Specific embodiments

[0028] As Figure 1 shown, a welded terminal 1 for a storage battery includes a terminal head 11 and a terminal piece 12. The terminal head 11 is columnar, preferably cylindrical. The top surface of the terminal head 11 has a threaded connection hole 13 for wiring during use.

[0029] The side wall of the terminal head 11 is provided with an annular groove 15 for enhancing the sealing effect between the welded terminal of the storage battery and the sealant when using sealant for sealing. The position of the annular groove 15 is on the part of the terminal head 11 that extends into the bus bar glue groove of the battery cover after the storage battery is assembled.

[0030] The terminal piece 12 is sheet-shaped, and one end extends out from the bottom of the terminal head 11. The outer contour of the end of the terminal piece 12 far from the terminal head 11 is square for fusion connection with the bus bar. The terminal piece 12 is provided with a connection hole 14 for facilitating the inflow of lead liquid to enhance the connection strength between the welded terminal of the storage battery and the bus bar.

[0031] The material of the welded terminal of the storage battery in this application is copper. The terminal head 11 and the terminal piece 12 are integrally formed. The melting point of copper is much higher than that of the pure lead for casting the bus bar. Therefore, the terminal head 11 and the terminal piece 12 are integrally formed copper parts, and the whole prefabricated welded terminal 1 is placed and fused with the bus bar when the bus bar is formed by casting welding.

[0032] As Figures 2 to 4 shown, a storage battery includes a battery cell 2. The battery cell 2 has 6 single cells. Each single cell is provided with an electrode group 3. The electrode group 3 includes a number of alternately arranged positive plates and negative plates. The top surfaces of the positive plates and the negative plates are both provided with electrode tabs 4. The top surface of the positive plate is a positive electrode tab, and the top surface of the negative plate is a negative electrode tab. The positive electrode tabs of the positive plates in one electrode group 3 are arranged in a row and connected by a positive bus bar, and the negative electrode tabs of the negative plates in one electrode group 3 are arranged in a row and connected by a negative bus bar. A positive bus bar and a negative bus bar in adjacent electrode groups are connected in series to form Figure 2 and Figure 3 the bus bar 5 in, and a positive bus bar and a negative bus bar at the head and tail are separately provided, which is Figures 2 to 4In the bus bar 6, a welding terminal 1 is connected to each bus bar 6.

[0033] Using Figure 1 For the welding terminal 1 with the structure in [reference], the welding terminal 1 is fusion-connected to the bus bar 6 through the free end of the terminal piece 12 (i.e., the end far from the terminal head 11), and the top of the terminal head 11 extends into the terminal hole glue groove of the battery cover.

[0034] In this application, compared with the traditional terminal, the welding terminal reduces the later welding process of the terminal, saves labor or material resources, and reduces the defective rate of products caused by welding. Compared with the traditional terminal, the weight of the terminal is significantly reduced as the length of the terminal piece is significantly reduced. The bus bar pole is replaced by the terminal, reducing the lead consumption of the bus bar and increasing the specific capacity of the battery.

Claims

1. A battery welding terminal, characterized in that: including a terminal head and a terminal piece; The terminal head is columnar, and the top surface has a threaded wiring hole; The terminal piece is in sheet shape, with one end extending from the bottom of the terminal head; When in use, the free end of the terminal piece is fused and connected with the busbar, and the top of the terminal head extends into the terminal hole glue groove of the battery cover.

2. The battery welding terminal according to claim 1, characterized in that: The battery welding terminal is made of copper.

3. The battery welding terminal according to claim 1, characterized in that: The terminal head and the terminal piece are integrally formed.

4. The battery welding terminal according to claim 1, characterized in that: The terminal piece is provided with a connection hole for facilitating the flow of lead liquid to enhance the connection strength between the battery welding terminal and the busbar.

5. The battery welding terminal according to claim 1, characterized in that: The side wall of the terminal head is provided with an annular groove for enhancing the sealing effect between the battery welding terminal and the sealant when the sealant is used for sealing.

6. A storage battery, characterized in that: Using the battery welding terminal described in any one of claims 1 to 5, the battery welding terminal is fused and connected to the busbar through the free end of the terminal piece, and the top of the terminal head extends into the glue groove of the battery cover.

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