Storage battery terminal connecting structure
By hiding the pole pillar in the counterhole of the top cover and using the design of elastic gaskets and top rods, the problems of easy collision of the pole pillar and loose terminals are solved, and a stable terminal connection structure is achieved.
Patent Information
- Application Number
- CN202421621642.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-07-10
AI Technical Summary
The pole pillars of existing batteries are prone to bumps and the terminals are prone to loosen in a vibrating environment, resulting in poor connection.
A battery terminal connection structure is designed, in which the pole pillar is hidden in the counter hole of the top cover, and a stable connection is achieved by using the cooperation of the elastic gasket and the top rod and the convex edge.
Effectively prevent pole bumps, ensure stable connection between terminals and pole pillars, avoid loosening, and improve the reliability and convenience of connection.
Smart Images
Figure CN223167623U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of battery terminal connection structures, and particularly relates to a battery terminal connection structure. Background Art
[0002] A battery generally includes a housing, a top cover, and battery cells disposed inside the housing. The battery cells supply power outward through a positive electrode post and a negative electrode post. The positive electrode post and the negative electrode post pass upward through the top cover, and external electrical devices are respectively connected to the positive electrode post and the negative electrode post through terminals. The upper ends of the existing positive electrode post and negative electrode post usually protrude above the top surface of the top cover to facilitate connection of the terminals. Therefore, during storage and transportation, the positive electrode post and the negative electrode post are prone to being knocked, resulting in scrapping of the entire battery. On the other hand, the existing terminals are usually open annular structures. When connecting the electrode posts, screws are used to lock the opening of the annular structure. In such a way, the terminals are prone to loosening in a long-term vibrating use environment, and then the contact between the terminals and the electrode posts becomes poor. Content of the Utility Model
[0003] To solve the deficiencies of the prior art, the utility model provides a battery terminal connection structure, which can effectively avoid being knocked and has a stable connection structure.
[0004] In order to achieve the purpose of the utility model, the following scheme is proposed:
[0005] A battery terminal connection structure, a counterbore is provided at the top of the top cover of the battery, the electrode post coaxially passes through the counterbore, the top surface of the electrode post is lower than the top surface of the top cover, and the opening of the counterbore has a convex edge protruding inward;
[0006] The upper end of the terminal is used to connect a cable, the lower end of the terminal has a blind hole matching the electrode post, and an elastic gasket made of conductive metal is provided at the bottom. A plurality of ejector rods are arranged along the circumference of the outer wall of the terminal, the lower ends of the ejector rods are connected to the terminal, the upper ends of the ejector rods are inclined upward and outward, and the ejector rods have elasticity;
[0007] During assembly, the lower end of the terminal is inserted into the counterbore, the upper end of the electrode post is inserted into the blind hole, the upper end of the ejector rod abuts against the bottom surface of the convex edge, and the elastic gasket is compressed between the top surface of the electrode post and the bottom surface of the blind hole.
[0008] The beneficial effects of the utility model are as follows: In this scheme, the electrode post is hidden in the counterbore provided on the top cover, which can effectively prevent the electrode post from being knocked; and the terminal is installed by the way that the ejector rod abuts against the convex edge, avoiding the cumbersome process when using screws to lock, making the installation of the terminal more convenient; the electrode post and the terminal are connected by an elastic gasket, which can effectively prevent loosening between the electrode post and the terminal. Description of the Drawings
[0009] The accompanying drawings described herein are only for illustrating selected embodiments and not all possible implementation schemes, let alone intending to limit the scope of the present utility model.
[0010] Figure 1 The external structural schematic diagram of the top cover is shown.
[0011] Figure 2 The structural schematic diagram of the terminal is shown.
[0012] Figure 3 The cross-sectional view of the connection part between the terminal and the cover plate is shown.
[0013] Markings in the figure: top cover - 1, counterbore - 11, flange - 12, pole post - 2, terminal - 3, blind hole - 31, ejector rod - 32, first wiring hole - 33, second wiring hole - 34, elastic gasket - 4, compression screw - 5. Specific embodiments
[0014] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the following will describe the embodiments of the present utility model in detail with reference to the accompanying drawings. However, the embodiments described herein are only a part of the embodiments of the present utility model, rather than all of the embodiments.
[0015] As Figures 1 to 3 shown, in a battery terminal connection structure, a counterbore 11 is provided at the top of the top cover 1 of the battery, the pole post 2 is coaxially inserted into the counterbore 11, the top surface of the pole post 2 is lower than the top surface of the top cover 1, and a flange 12 protruding inward is provided at the opening of the counterbore 11.
[0016] The upper end of the terminal 3 is used to connect the cable. Specifically, the cable can be welded to the upper end of the terminal 3. The lower end of the terminal 3 has a blind hole 31 matching the pole post 2, and an elastic gasket 4 made of conductive metal is provided at its bottom. The conductive metal includes copper, aluminum, iron, etc. A plurality of ejector rods 32 are arranged in a circumferential array on the outer wall of the terminal 3, and their lower ends are connected to the terminal 3. The upper ends of the ejector rods 32 have an outer side inclined upward towards the terminal, and the ejector rods 32 have elasticity.
[0017] During assembly, the lower end of the terminal 3 is inserted into the counterbore 11, the upper end of the pole post 2 is inserted into the blind hole 31, the upper end of the ejector rod 32 abuts against the bottom surface of the flange 12, and the elastic gasket 4 is compressed between the top surface of the pole post 2 and the bottom surface of the blind hole 31 to achieve current transmission between the pole post 2 and the terminal 3. Moreover, the reaction force generated by the elastic gasket 4 resisting elastic deformation will exert an upward thrust on the terminal 3, so that the ejector rod 32 presses tightly against the bottom surface of the flange 12 to ensure the connection stability between the terminal 3 and the top cover 1. At the same time, the elastic gasket 4 always maintains a state of being in contact with the terminal 3 and the pole post 2 to prevent poor contact between the terminal 3 and the pole post 2. The above structure hides the pole post 2 in the counterbore 11 provided on the top cover 1, which can effectively prevent the pole post 2 from being knocked.
[0018] Preferably, as Figure 3 shown, the blind hole 31 is a conical hole structure, and the upper end of the pole 2 is a conical rod structure. When assembling, the upper end of the pole 2 matches the side wall of the conical hole, so as to improve the relative position accuracy between the terminal 3 and the pole 2, reduce and prevent the terminal from shaking, and at the same time increase the contact area between the pole 2 and the terminal 3.
[0019] Preferably, as Figure 2 , Figure 3 shown, a first wiring hole 33 is provided at the top of the terminal 3 for threading a cable, and a compression screw 5 is passed through the side wall of the terminal 3 for compressing the cable passing through the first wiring hole 33.
[0020] More preferably, as Figure 2 , Figure 3 shown, a second wiring hole 34 perpendicular to the compression screw 5 is provided in the side wall of the terminal 3, which is also used for threading a cable and can also be compressed by the compression screw 5. Designing the above two wiring holes can facilitate appropriate selection according to the layout orientation of the cable, so as to connect the cable.
[0021] Preferably, as Figure 3 shown, the elastic gasket 4 includes two parallel and spaced annular sheets, and there is a predetermined interval between the annular sheets. The inner circles of the two annular sheets are integrally connected. When the elastic gasket 4 is in a natural state, the edges of the two annular sheets are respectively warped towards the two ends of the axis of the elastic gasket 4. When the elastic gasket 4 is compressed, the two elastic gaskets 4 are parallel to each other, and the surfaces of the two annular sheets are respectively in contact with the bottom surface of the blind hole 31 and the top surface of the pole 2.
[0022] The above are only the preferred embodiments of the present invention and do not represent the only or limit the present invention. Those skilled in the art should understand that without departing from the scope of the present invention, various changes or equivalent substitutions made to the present invention all fall within the scope of protection of the present invention.
Claims
1. A battery terminal connection structure, characterized in that, The top of the top cover (1) of the storage battery is provided with a counterbore (11), the terminal post (2) is coaxially inserted into the counterbore (11), the top surface of the terminal post (2) is lower than the top surface of the top cover (1), and the opening of the counterbore (11) has a convex edge (12) protruding inward; The upper end of the terminal (3) is used to connect the cable. The lower end of the terminal (3) has a blind hole (31) matching the terminal post (2). An elastic gasket (4) made of conductive metal is provided at the bottom. A plurality of ejector rods (32) are arranged in a circumferential array on the outer wall of the terminal (3). The lower ends thereof are connected to the terminal (3). The upper ends of the ejector rods (32) are inclined outward above the terminal. The ejector rods (32) have elasticity; During assembly, the lower end of the terminal (3) is inserted into the counterbore (11), the upper end of the terminal post (2) is inserted into the blind hole (31), the upper ends of the ejector rods (32) abut against the bottom surface of the convex edge (12), and the elastic gasket (4) is compressed between the top surface of the terminal post (2) and the bottom surface of the blind hole (31).
2. The battery terminal connection structure according to claim 1, wherein, The blind hole (31) is of a conical hole structure, and the upper end of the terminal post (2) is of a conical rod structure. During assembly, the upper end of the terminal post (2) matches the side wall of the conical hole.
3. A battery terminal connection structure according to claim 1, characterized in that, A first wiring hole (33) is opened at the top of the terminal (3) for passing the cable. A compression screw (5) is inserted through the side wall of the terminal (3) for compressing the cable passing through the first wiring hole (33).
4. The battery terminal connection structure according to claim 3, characterized in that, A second wiring hole (34) perpendicular to the compression screw (5) is opened on the side wall of the terminal (3).
5. A battery terminal connection structure according to claim 1, characterized in that, The elastic gasket (4) includes two parallel and spaced annular sheets. There is a predetermined interval between the annular sheets. The inner circles of the two annular sheets are integrally connected. When the elastic gasket (4) is in a natural state, the edges of the two annular sheets are warped towards the two ends of the axis of the elastic gasket (4). When the elastic gasket (4) is compressed, the two elastic gaskets (4) are parallel to each other, and the surfaces of the two annular sheets are respectively in contact with the bottom surface of the blind hole (31) and the top surface of the terminal post (2).