Lead-acid storage battery and terminal protection cap thereof

Abstract

The utility model relates to a lead-acid storage battery terminal protective cap which comprises a protective cap body, the middle part of the lower end of the protective cap body is gradually concave upwards and inwards to form a step-shaped groove matched with an upper boss and an upper angular terminal of a battery outer shell, the large step groove positioned at the lower end is matched with a boss at the upper terminal of the battery outer shell, and the step groove positioned at the middle part is matched with a horizontal section of the angular terminal; the small step groove at the upper end is matched with the vertical section of the angular terminal; ribs in interference fit with the vertical sections of the angular terminals are arranged on the left inner side wall and the right inner side wall of the small step groove. The lead-acid storage battery is installed on an angular terminal of the lead-acid storage battery, so that the problem of short circuit of the lead-acid storage battery in storage and transportation can be prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of lead-acid batteries, and in particular relates to a lead-acid battery and a terminal protection cap thereof. Background Art

[0002] Lead-acid battery technology is developing. In order to meet the different needs of different customers, the terminal designs of lead-acid batteries include cone terminals, angle terminals, screw terminals, etc.

[0003] Lead-acid battery terminals need to be protected during storage and transportation. If the battery terminals are connected to other metal conductors, a short circuit will occur, burning the terminals and causing the battery to fail.

[0004] At present, there are many protective caps for conical terminals in the lead-acid battery market. For example, the patent with the authorization announcement number CN220155719 U is a lead-acid battery pole protective cap, which includes a cap body and a brim. The top of the cap body has a top cover and the bottom is open. The top cover and the vertical surface of the cap body form a receiving cavity, which is used to buckle on the battery pole to form protection; the brim is located at the opening edge of the cap body and is turned outward in a ring shape; the vertical surface of the cap body has a number of recessed parts arranged at intervals, and all the recessed parts are connected end to end in a corrugated shape. When the recessed parts are squeezed, they can expand outward to expand the receiving cavity. This protective cap can be installed on the conical terminal of the lead-acid battery. It is suitable for tightness and is not easy to fall off. It can prevent the battery pole from connecting with other metals and causing ignition and short circuit.

[0005] However, in the lead-acid battery market, a considerable number of terminals are still angle terminals. Currently, there are no protective caps for the angle terminals, which provides insufficient protection for the angle terminals and poses a greater risk of short circuits. Utility Model Content

[0006] The purpose of the utility model is to provide a lead-acid battery and a terminal protection cap thereof in order to overcome the above-mentioned shortcomings. The lead-acid battery is installed on the angular terminal of the lead-acid battery to prevent the short circuit problem of the lead-acid battery during storage and transportation.

[0007] The technical solution of the utility model is: a lead-acid battery terminal protection cap, comprising a protection cap body;

[0008] The middle part of the lower end of the protective cap body is gradually concave upward to form a stepped groove matching the upper boss of the battery outer shell and the upper angle terminal, the large step groove at the lower end matches the boss at the upper terminal of the battery outer shell, the step groove at the middle part matches the horizontal section of the angle terminal, and the small step groove at the upper end matches the vertical section of the angle terminal;

[0009] The left and right inner side walls of the small step groove are provided with ribs which are interference fit with the vertical section of the angle terminal.

[0010] The depth of the large step groove is consistent with the height of the boss, and the bottom plane of the large step groove is pressed on the upper end surface of the boss.

[0011] The large step groove is clearance-matched with the boss.

[0012] The depth of the step groove is greater than the height of the horizontal section of the angle terminal.

[0013] The side wall of the step groove is gap-matched with the side wall of the horizontal section of the angle terminal.

[0014] The depth of the small step groove is greater than the height of the vertical section of the angle terminal.

[0015] The width of the small step groove is greater than the width of the vertical section of the angle terminal.

[0016] A lead-acid battery, comprising a battery outer shell;

[0017] The two ends of the battery outer shell are provided with positive and negative angular terminals through in-mold injection, and the angular terminals on the battery outer shell are provided with bosses;

[0018] The angle terminal is externally provided with the terminal protection cap described in the above technical solution.

[0019] The angle terminal is an L-shaped structure consisting of a horizontal section and a vertical section connected to each other.

[0020] The beneficial effects of the utility model are as follows: the newly developed terminal protection cap is installed on the angular terminal of the lead-acid battery and is not easy to fall off; the terminal protection cap is designed with a closed upper end and an open lower end structure, which can also provide a certain degree of protection when it rains. It can prevent the short circuit problem of the lead-acid battery during storage and transportation. When using the lead-acid battery, it is also very convenient to remove the terminal protection cap; BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the protective cap of the utility model after installation;

[0022] Figure 2 A partial schematic diagram of the battery of the utility model Figure 1 ;

[0023] Figure 3 A partial schematic diagram of the battery of the utility model Figure 2 ;

[0024] Figure 4 This is a schematic diagram of the structure of the protective cap of the utility model;

[0025] Figure 5 for Figure 1 A partial cross-sectional view of . DETAILED DESCRIPTION

[0026] Figure 1 , Figure 2 , Figure 3 , Figure 4 In the figure, the middle part of the lower end of the protective cap body 1 is gradually concave upward to form a stepped groove matching the boss 8 on the battery outer shell 2 and the upper angle terminal 3. The large step groove 9 at the lower end matches the boss 8 at the terminal on the battery outer shell 2, the step groove 10 at the middle matches the horizontal section of the angle terminal 3, and the small step groove 11 at the upper end matches the vertical section of the angle terminal 3; the left and right inner walls of the small step groove 11 are provided with ribs 5 that are interference fit with the vertical section of the angle terminal 3, and the four ribs 5 at both ends are tightly assembled (interference fit) with the side 7 of the angle terminal 3; the depth of the large step groove 9 is consistent with the height of the boss 8, and the bottom plane 6 of the large step groove 9 is pressed on the upper end surface of the boss 8 for up and down positioning.

[0027] The protective cap body is installed on the battery outer shell 2 and is not easy to fall off; pinch the side 4 of the protective cap body with your fingers, the middle part of the side 4 will be concave and deformed due to the squeezing pressure, and the protective cap body can be easily removed; the angular terminal 3 is embedded in the battery outer shell 2 by in-mold injection molding, and the protective cap body can be installed on the angular terminal 3 to protect the angular terminal 3.

[0028] Figure 5 In the figure, the inner side wall of the large step groove 9 is gap-matched with the four side walls of the boss 8, the depth of the step groove 10 is higher than the height of the horizontal section of the angle terminal 3, and the side wall of the step groove 10 is gap-matched with the side wall of the horizontal section of the angle terminal 3; the depth of the small step groove 11 is higher than the height of the vertical section of the angle terminal 3, and the width of the small step groove 11 is greater than the width of the vertical section of the angle terminal 3.

Claims

1. A lead-acid battery terminal protection cap, characterized in that: It comprises a protective cap body (1); The middle part of the lower end of the protective cap body (1) is gradually concave upward to form a stepped groove matching the upper boss (8) of the battery outer shell (2) and the upper angle terminal (3); the large step groove (9) at the lower end matches the boss (8) at the upper terminal of the battery outer shell (2); the step groove (10) at the middle part matches the horizontal section of the angle terminal (3); and the small step groove (11) at the upper end matches the vertical section of the angle terminal (3); The left and right inner side walls of the small step groove (11) are provided with ribs (5) which are interference-fitted with the vertical section of the angle terminal (3).

2. A lead-acid battery terminal protection cap according to claim 1, characterized in that: The depth of the large step groove (9) is consistent with the height of the boss (8), and the bottom plane (6) of the large step groove (9) is pressed on the upper end surface of the boss (8).

3. A lead-acid battery terminal protection cap according to claim 1 or 2, characterized in that: The large step groove (9) and the boss (8) are clearance-matched.

4. A lead-acid battery terminal protection cap according to claim 1, characterized in that: The depth of the step groove (10) is higher than the height of the horizontal section of the angle terminal (3).

5. A lead-acid battery terminal protection cap according to claim 1 or 4, characterized in that: The side wall of the step groove (10) is clearance-matched with the side wall of the horizontal section of the angle terminal (3).

6. A lead-acid battery terminal protection cap according to claim 1, characterized in that: The depth of the small step groove (11) is higher than the height of the vertical section of the angle terminal (3).

7. A lead-acid battery terminal protection cap according to claim 1 or 6, characterized in that: The width of the small step groove (11) is greater than the width of the vertical section of the angle terminal (3).

8. A lead-acid battery, characterized in that: It includes a battery outer shell (2); Both ends of the battery outer shell (2) are provided with angular terminals (3) with positive and negative electrodes through in-mold injection, and the angular terminals (3) on the battery outer shell (2) are provided with bosses (8); The angle terminal (3) is externally provided with a terminal protection cap as claimed in any one of claims 1 to 5.

9. A lead-acid battery according to claim 8, characterized in that: The angle terminal (3) is an L-shaped structure consisting of mutually connected horizontal sections and vertical sections.

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