Battery structure for reducing electrode post protrusion height

Abstract

The utility model discloses a battery structure that reduces electrode column overhang height, including battery cover, ceramic ring and electrode column, and the outer periphery of electrode column top is equipped with support part, and the center of battery cover is equipped with fixed hole, still include metal ring, ceramic ring is equipped with outside electrode column, and the upper surface of ceramic ring is sealedly connected with the lower surface of support part, and metal ring includes upper metal ring, lower metal ring and the connecting ring of connecting upper metal ring and lower metal ring, and the connecting ring is equipped with outside ceramic ring, and the upper surface of lower metal ring is sealedly connected with the lower surface of ceramic ring, and there is gap between the inner wall of lower metal ring and electrode column, and the connecting ring is equipped in the fixed hole of battery cover, and upper metal ring is sealedly connected with battery cover. Its advantage is that ceramic ring, lower metal ring and connecting ring sink to fixed hole, and the bottom of electrode column is equipped in ceramic ring, so that the top of electrode column projects battery cover upper surface and is relatively low, saves the space, and the volume is small, and the cost of battery pack is reduced.

Description

Technical Field

[0001] This utility model relates to the field of power battery technology, and in particular to a battery structure that reduces the height of the electrode posts. Background Technology

[0002] Currently, power batteries consist of a cover plate, a ceramic ring, and electrode posts. The ceramic ring is fitted over the electrode posts and fixed within the mounting holes of the battery cover plate. The tops of the electrode posts protrude high above the cover plate surface. This excess space at the top of the electrode posts results in an excessively large battery pack, increasing its cost. Furthermore, the ceramic ring is made of ceramic material, while the cover plate is made of metal, leading to poor adhesion between the two. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a battery structure that reduces the height of the electrode posts, in order to address the shortcomings of the existing technology.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0005] A battery structure for reducing the protrusion height of electrode posts includes a battery cover, a ceramic ring, and electrode posts. A support portion is provided on the outer periphery of the top of the electrode posts. A fixing hole is provided in the center of the battery cover. The structure also includes a metal ring. The ceramic ring is fitted over the electrode posts, and its upper surface is sealed to the lower surface of the support portion. The metal ring includes an upper metal ring, a lower metal ring, and a connecting ring connecting the upper and lower metal rings. The connecting ring is fitted over the ceramic ring, and the upper surface of the lower metal ring is sealed to the lower surface of the ceramic ring. A gap exists between the inner wall of the lower metal ring and the electrode posts. The connecting ring is fitted into the fixing hole of the battery cover, and the upper metal ring is sealed to the battery cover.

[0006] A preferred embodiment is that the inner wall of the fixing hole is provided with a mounting groove, and the upper metal ring is sealed and fixed in the mounting groove.

[0007] A preferred embodiment is that the upper metal ring and the battery cover are laser welded together.

[0008] In a preferred embodiment, the upper surface of the ceramic ring and the lower surface of the support are sealed by brazing after ceramic metallization, and the upper surface of the lower metal ring and the lower surface of the ceramic ring are sealed by brazing after ceramic metallization.

[0009] In a preferred embodiment, the upper surface of the battery cover is flush with the upper surface of the ceramic ring.

[0010] The battery structure provided by this embodiment of the invention, which reduces the protrusion height of the electrode post, has at least the following beneficial effects: the ceramic ring, the lower metal ring, and the connecting ring are recessed into the fixing hole, and the bottom of the electrode post is fitted inside the ceramic ring, so that the top of the electrode post protrudes relatively low from the upper surface of the battery cover plate, saving space, reducing volume, and lowering the cost of the battery pack. The electrode post is fixed by being limited by the metal ring and the ceramic ring, which improves product quality.

[0011] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0012] Fig. 1 This is a cross-sectional view of the present invention;

[0013] Fig. 2 This is a cross-sectional view of the battery cover plate in this utility model;

[0014] Fig. 3 This is a cross-sectional view of the metal ring in this utility model. Detailed Implementation

[0015] To illustrate the ideas and objectives of this application, the following description will be provided in conjunction with the accompanying drawings and specific embodiments.

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," "left," "right," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0017] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0018] like Figs. 1-3As shown, a battery structure for reducing the protrusion height of electrode posts includes a battery cover plate 10, a ceramic ring 20, and electrode posts 30. A support portion 31 is provided on the outer periphery of the top of the electrode post 30. A fixing hole 11 is provided in the center of the battery cover plate 10. The structure also includes a metal ring 40. The ceramic ring 20 is sleeved on the electrode post 30, and its upper surface is sealed to the lower surface of the support portion 31. The metal ring 40 includes an upper metal ring 41, a lower metal ring 42, and a connecting ring 43 connecting the upper metal ring 41 and the lower metal ring 42. The connecting ring 43 is sleeved on the ceramic ring 20. The upper surface of the lower metal ring 42 is sealed to the lower surface of the ceramic ring 20. A gap exists between the inner wall of the lower metal ring 42 and the electrode post 30. The connecting ring 43 is sleeved within the fixing hole 11 of the battery cover plate 10, and the upper metal ring 41 is sealed to the battery cover plate 10.

[0019] like Figs. 1-3 As shown, the ceramic ring 20, lower metal ring 42, and connecting ring 43 are recessed into the fixing hole 11. The bottom of the electrode post 30 is fitted inside the ceramic ring 20, making the top of the electrode post 30 protrude relatively low from the upper surface of the battery cover plate 10, saving space, reducing size, and lowering the cost of the battery pack. The electrode post 30 is fixed by being limited and fixed with the metal ring 40 and ceramic ring 20, improving product quality.

[0020] like Figs. 1-3 As shown, the outer diameter of the upper metal ring 41 is larger than the outer diameter of the lower metal ring 42.

[0021] like Figs. 1-3 As shown, the inner wall of the fixing hole 11 is provided with a mounting groove 12, and the upper metal ring 41 is sealed and fixed in the mounting groove 12. The mounting groove 12 is located at the top of the fixing hole 11, and the upper surface of the upper metal ring 41 is flush with the upper surface of the battery cover plate 10.

[0022] like Figs. 1-3 As shown, the upper metal ring 41 and the battery cover 10 are laser-welded. Both the upper metal ring 41 and the battery cover 10 are made of metal, resulting in a high welding efficiency.

[0023] like Figs. 1-3 As shown, the upper surface of the ceramic ring 20 and the lower surface of the support 31 are sealed by brazing after ceramic metallization, and the upper surface of the lower metal ring 42 and the lower surface of the ceramic ring 20 are sealed by brazing after ceramic metallization.

[0024] like Figs. 1-3 As shown, after the upper surface of the ceramic ring 20 is ceramic-metallized, the upper surface of the ceramic ring 20 is firmly and stably welded to the lower surface of the support portion 31. Similarly, after the lower surface of the ceramic ring 20 is ceramic-metallized, the upper surface of the lower metal ring 42 is firmly and stably welded to the lower surface of the ceramic ring 20.

[0025] like Figs. 1-3 As shown, the upper surface of the battery cover 10 is flush with the upper surface of the ceramic ring 20. The portion of the electrode post 30 that protrudes from the upper surface of the battery cover 10 forms a support portion 31. The support portion 31 has a relatively low height, saving space, reducing its size, and lowering the cost of the battery pack.

[0026] The above are specific embodiments of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A battery structure for reducing the protrusion height of electrode posts, comprising a battery cover, a ceramic ring, and electrode posts, wherein a support portion is provided on the outer periphery of the top of the electrode posts, and a fixing hole is provided in the center of the battery cover, characterized in that, It also includes a metal ring, the ceramic ring is sleeved outside the electrode post, the upper surface of the ceramic ring is sealed to the lower surface of the support, the metal ring includes an upper metal ring, a lower metal ring, and a connecting ring connecting the upper metal ring and the lower metal ring, the connecting ring is sleeved outside the ceramic ring, the upper surface of the lower metal ring is sealed to the lower surface of the ceramic ring, there is a gap between the inner wall of the lower metal ring and the electrode post, the connecting ring is sleeved in the fixing hole of the battery cover, and the upper metal ring is sealed to the battery cover.

2. The battery structure for reducing the protrusion height of electrode posts according to claim 1, characterized in that, The inner wall of the fixing hole is provided with an installation groove, and the upper metal ring is sealed and fixed in the installation groove.

3. The battery structure for reducing the protrusion height of electrode posts according to claim 1 or 2, characterized in that, The upper metal ring is laser-welded to the battery cover.

4. The battery structure for reducing the protrusion height of electrode posts according to claim 1, characterized in that, The upper surface of the ceramic ring and the lower surface of the support are sealed by brazing after ceramic metallization, and the upper surface of the lower metal ring and the lower surface of the ceramic ring are sealed by brazing after ceramic metallization.

5. The battery structure for reducing the protrusion height of electrode posts according to claim 1, characterized in that, The upper surface of the battery cover is flush with the upper surface of the ceramic ring.

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