Top welding standard terminal and battery block

Abstract

The utility model discloses a top welding standard terminal and a battery cover plate, and relates to the field of battery structures, the top welding standard terminal comprises a pole, a connecting sheet and a connecting part, the pole is arranged on one side of a battery; the connecting sheet is arranged on one side, close to the battery, of the pole; the connecting part is arranged at one end of the connecting piece, the connecting part is located at one side of the battery, the connecting part is connected with the tab, the tab is connected with the battery, the connecting piece and the pole column can be tightly connected through the arranged connecting part, the battery cell and the connecting piece do not need to be turned over after being welded, and the battery cell and the connecting piece are convenient to assemble and disassemble. And the redundant occupation space of the tabs is avoided.

Description

Technical Field

[0001] This application relates to the field of battery structure, and more particularly to a top-welded standard terminal and a battery block. Background Technology

[0002] With the rapid development of modern electronic devices, batteries, as the core component of energy supply, face increasingly higher requirements for performance, safety, and reliability. In the battery manufacturing process, the connection between the battery cell and standard terminals is a crucial step, affecting not only the battery's energy transfer efficiency but also its safety performance and lifespan.

[0003] Traditional methods of connecting battery modules to standard terminals often involve welding, bolting, or crimping. However, these traditional methods have several drawbacks. For example, while welding provides a strong connection, the high temperatures generated during the welding process can cause thermal damage to the internal materials of the battery, affecting its performance. Bolted connections, although easy to disassemble, are prone to loosening, impacting the battery's energy transfer efficiency. Crimping, on the other hand, can lead to poor contact and increased resistance, similarly affecting battery performance.

[0004] To address these issues, the industry has begun exploring new connection methods between battery cells and standard terminals. Currently, the battery cell tabs are first welded to connecting tabs, which are then welded to the terminals. During connecting tab welding, the cell needs to be folded to the sides to avoid this, and the tabs require a certain length. Different tab relaxation states after the cell is installed increase the risk of short circuits, and longer tabs also increase internal resistance and occupy internal battery space. Furthermore, the incompatibility of top cover components between different battery models increases development and production costs.

[0005] Therefore, developing a connection method between battery blocks and standard terminals that is simple in structure, has a strong connection, is easy to manufacture and install, and can maintain reliability and safety in various environments remains an important issue that urgently needs to be addressed in the current battery manufacturing field. Utility Model Content

[0006] To address the problems existing in the prior art, this utility model provides a top-welded standard terminal and a battery block, comprising:

[0007] The terminal post is located on one side of the battery;

[0008] A connecting piece is disposed on the terminal post near the side of the battery;

[0009] A connecting portion is disposed between the connecting piece and the pole post, and the connecting portion connects the connecting piece and the pole post;

[0010] The connecting piece is connected to the electrode tab, and the electrode tab is connected to the battery.

[0011] Optionally, in some embodiments of this application, the connecting portion includes a connector, the two sides of which are respectively connected to the pole post and the connecting piece.

[0012] Optionally, in some embodiments of this application, the connecting portion further includes a stop bracket, which is disposed between the terminal post and the connecting piece, and the stop bracket is connected to the battery in a cooperative manner.

[0013] Optionally, in some embodiments of this application, the stop frame is provided with a welding ring, and the stop frame is provided with a welding groove corresponding to the position of the welding ring. The side of the welding ring facing the welding groove is located in the welding groove, so that the welding ring is assembled in the welding groove.

[0014] Optionally, in some embodiments of this application, the inner ring of the welding ring is provided with a limiting groove, and a buckle is provided in the limiting groove, the buckle abutting against the welding ring in the limiting groove.

[0015] Optionally, in some embodiments of this application, a gap is formed between the buckle and the pole post, and a fixing member is provided between the buckle and the pole post. The fixing member is sleeved on the pole post and fills the gap between the buckle and the pole post.

[0016] Optionally, in some embodiments of this application, the fasteners are located on both sides of the buckle, and the fasteners wrap around the buckle.

[0017] Optionally, in some embodiments of this application, a sealing ring is provided on the inner side of the welding ring, and the sealing ring abuts against the welding ring, the buckle ring, and the stop frame.

[0018] Optionally, in some embodiments of this application, a battery block is also provided, the battery block comprising:

[0019] The battery has a terminal on one side and tabs on its surface, which are connected to the connecting part.

[0020] A top cover is fitted over the terminals, covering the terminals, and the top cover is fixedly installed on the outside of the battery.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] Through the carefully designed connection structure, especially the cooperation between the stop bracket and the fixing cavity, a tight connection between the connecting piece and the pole is ensured, effectively preventing the problem of loosening or falling off.

[0023] The introduction of welding rings, fasteners, and fasteners further enhances the strength of the connection, making the connection between the battery block and the standard terminals more stable and reliable. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of the battery block provided in the embodiments of this application;

[0026] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the battery block provided in the embodiments of this application;

[0027] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;

[0028] Figure 4 This is a schematic diagram of the overall structure of the top-welded standard terminal provided in an embodiment of this application;

[0029] Figure 5 This is a schematic diagram of the internal structure of the battery block provided in an embodiment of this application.

[0030] Explanation of reference numerals in the attached figures:

[0031] 100, Terminal post; 200, Connecting piece; 300, Connecting part; 310, Connecting component; 320, Stop bracket; 321, Welding groove; 330, Welding ring; 331, Limiting groove; 340, Buckle ring; 350, Gap; 360, Fixing component; 370, Sealing ring; 400, Battery; 410, Terminal tab; 500, Top cover. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this application. It is understood that the accompanying drawings are provided for reference and illustration only, and are not intended to limit this application. The connection relationships shown in the accompanying drawings are only for clear description and do not limit the connection method.

[0033] Specifically, such as Figure 1-5 As shown in the embodiment of this application, a top-welded standard terminal and a battery 400 block are provided. The battery 400 block includes a standard terminal, which in this application is provided with a terminal post 100, a connecting piece 200 and a connecting part 300. The terminal post 100 is located on one side of the battery 400 in this application, and there are two terminal posts 100. The two terminal posts 100 are specifically located at one end of the positive and negative terminals of the battery 400, and are installed corresponding to the positive and negative terminals of the battery 400, so that the terminal post 100 can be connected to the positive and negative terminals of the battery 400, which facilitates the use of the battery 400.

[0034] A connecting piece 200 is provided on one side of the terminal post 100. The connecting piece 200 is located between the terminal post 100 and the positive / negative terminals of the battery 400. The connecting piece 200 is generally disc-shaped, and the side of the connecting piece 200 away from the battery 400 is connected to the terminal post 100 through a connecting part 300, so as to facilitate the connection between the positive and negative terminals of the battery 400 and the terminal post 100.

[0035] Specifically:

[0036] The connecting part 300 includes a connector 310, which is installed between the connecting piece 200 and the terminal post 100. A stop bracket 320 is provided on the connector 310, and the stop bracket 320 is connected to the battery 400 to fix the connecting piece 200. A fixing cavity is provided on the stop bracket 320 corresponding to the position of the connecting piece 200, and part of the connecting piece 200 is located in the fixing cavity to prevent the connecting piece 200 from detaching from the stop bracket 320.

[0037] In this embodiment, the connecting piece 200 is mainly configured as a circular protrusion structure, and the protruding circular structure is fixed by a fixing cavity on the stop frame 320. The radius of the fixing cavity is equal to the radius of the circular protrusion structure, so that the connecting piece 200 is fixed by the stop frame 320.

[0038] In the embodiments of this application, such as Figure 4-5 As shown, the upper part of the connecting piece 200 is connected to the battery 400. The connection method is that a tab 410 is provided on the battery 400. One end of the tab 410 is connected to the battery cell of the battery 400, and the other end is connected to the connecting piece 200, so that the tab 410 can be connected to the terminal 100 through the connecting piece 200.

[0039] In the above, the stop bracket 320 is also provided with a welding ring 330, such as Figure 4As shown, the welding ring 330 has an overall ring-shaped structure, and the stop bracket 320 is provided with a welding groove 321 on one side of the welding ring 330. The side of the welding ring 330 facing the welding groove 321 is located in the welding groove 321, so that the welding ring 330 is assembled in the welding groove 321. At the same time, the welding ring 330 is set in the position corresponding to the pole post 100 and the connecting piece 200, so that the pole post 100 and the connecting piece 200 are both located in the welding ring 330, thus limiting the position of the pole post 100 and the connecting piece 200.

[0040] Specifically, the welding ring 330 has multiple stepped structures facing the center of the ring, and a limiting groove 331 is formed on the stepped structure, such as... Figure 4 As shown, a retaining ring 340 is provided in the limiting groove 331, and the retaining ring 340 is located in the limiting groove 331 and abuts against the limiting groove 331.

[0041] In this embodiment, the retaining ring 340 is a ring-shaped structure with an S-shaped cross-section. A gap 350 is formed between the retaining ring 340 and the pole post 100. The gap 350 is filled with a fixing member 360, which connects the retaining ring 340 to the pole post 100. In this application, the fixing member 360 is formed by injection molding, which allows the fixing member 360 to wrap around the retaining ring 340, thereby fixing both the retaining ring 340 and the pole post 100.

[0042] like Figure 4 As shown, the fastener 360 is located on both sides of the buckle 340.

[0043] A sealing ring 370 is also provided between the retaining ring 340 and the connecting piece 200. The sealing ring 370 is arranged in a ring shape on the retaining ring 340, and part of the sealing ring 370 is arranged on the stepped structure of the welding ring 330.

[0044] The structure of the sealing ring 370 allows the pole post 100, the retaining ring 340, and the welding ring 330 to be connected. Under the influence of the external stop bracket 320, these three components are tightly connected. Simultaneously, the position on the stop bracket 320 corresponding to the sealing ring 370 abuts against the sealing ring 370. Figure 4 As shown.

[0045] The above structure eliminates the need to fold the battery cell to the sides, eliminates the need to reserve length for the tab 410, and ensures that the tightness of the tab 410 remains consistent after welding.

[0046] This application also includes a battery block, which mainly comprises a battery body and standard terminals, such as... Figure 3-5 As shown, the specific structure includes:

[0047] The battery 400 has a standard terminal on one side and a tab 410 on the battery 400, which is connected to the connector 300.

[0048] The top cover 500 is sleeved over the terminals, covering the terminals, and is fixedly installed on the outside of the battery 400.

[0049] The above embodiments are only used to illustrate the technical methods of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of this utility model without departing from the spirit and scope of the technical methods of this utility model.

Claims

1. A top-welded standard terminal, characterized in that, include: The terminal post is located on one side of the battery; A connecting piece is disposed on the terminal post near the side of the battery; A connecting portion is disposed between the connecting piece and the pole post, and the connecting portion connects the connecting piece and the pole post; The connecting piece is connected to the electrode tab, and the electrode tab is connected to the battery.

2. A top-welded standard terminal according to claim 1, characterized in that, The connecting part includes a connector, and the two sides of the connector are respectively connected to the pole and the connecting piece.

3. A top-welded standard terminal according to claim 2, characterized in that, The connecting part also includes a stop bracket, which is disposed between the terminal post and the connecting piece, and the stop bracket is connected to the battery.

4. A top-welded standard terminal according to claim 3, characterized in that, The stop frame is provided with a welding ring, and the stop frame has a welding groove corresponding to the position of the welding ring. The side of the welding ring facing the welding groove is located in the welding groove, so that the welding ring is assembled in the welding groove.

5. A top-welded standard terminal according to claim 4, characterized in that, The inner ring of the welding ring is provided with a limiting groove, and a buckle is provided in the limiting groove. The buckle abuts against the welding ring in the limiting groove.

6. A top-welded standard terminal according to claim 5, characterized in that, A gap is formed between the buckle and the pole post, and a fixing member is provided between the buckle and the pole post. The fixing member is sleeved on the pole post and fills the gap between the buckle and the pole post.

7. A top-welded standard terminal according to claim 6, characterized in that, The fasteners are located on both sides of the buckle, and the fasteners wrap around the buckle.

8. A top-welded standard terminal according to claim 5, characterized in that, A sealing ring is provided on the inner side of the welding ring, and the sealing ring abuts against the welding ring, the buckle ring and the stop frame.

9. A battery block made by means of a top-welded standard terminal as described in any one of claims 1-8.

10. A battery block according to claim 9, characterized in that, The battery block includes: The battery has a terminal on one side and tabs on its surface, which are connected to the connecting part. A top cover is fitted over the terminals, covering the terminals, and the top cover is fixedly installed on the outside of the battery.

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