Electric connector and battery assembly

Abstract

The utility model relates to an electric connector and a battery assembly. The electric connecting piece comprises a main body, wherein the main body comprises an inserting part, a transition part and a battery cell connecting part; the inserting part, the transition part and the battery cell connecting part are integrally formed, and the transition part is connected between the battery cell connecting part and the inserting part; the battery cell connecting part is provided with a salient point structure, the salient point structure is used for being welded with an electrode of a battery cell, and the plugging part is provided with a male terminal structure for plugging connection. According to the scheme provided by the invention, the electric connecting piece is more convenient and faster to assemble, disassemble and buckle, and meanwhile, the large-current charging and discharging requirements can be met.

Description

Technical Field

[0001] The present application relates to the field of new energy technology, and in particular to electrical connectors and battery assemblies. Background Art

[0002] The battery's plug-in terminals and nickel sheets are both important connecting materials in battery assemblies. Battery plug-in terminals are usually used for series and parallel connections of battery packs or for detachable connections between batteries and electrical equipment. Nickel sheets have good conductivity, corrosion resistance and weldability, and are generally welded to the battery's electrodes.

[0003] In related technologies, the plug-in terminal and the nickel sheet are generally two independent structures, which are connected by welding wires. This connection structure is not only difficult to meet the large current charging and discharging of the battery, but also has poor assembly and disassembly convenience and low versatility. Utility Model Content

[0004] In order to solve or partially solve the problems existing in the related art, the present application provides an electrical connector and a battery assembly, which is more convenient and quick to disassemble and assemble, and can meet the charging and discharging requirements of large currents.

[0005] In a first aspect, the present application provides an electrical connector, comprising:

[0006] The main body includes a plug-in portion, a transition portion and a cell connection portion; the plug-in portion, the transition portion and the cell connection portion are formed as one body, and the transition portion is connected between the cell connection portion and the plug-in portion;

[0007] The cell connection portion is provided with a convex structure for welding with the electrode of the cell, and the plug-in portion is provided with a male terminal structure for plug-in connection.

[0008] In one implementation, the cell connecting portion includes a first sub-connecting piece and a second sub-connecting piece;

[0009] A shunt groove is provided between the first sub-connecting piece and the second sub-connecting piece, and the bump structure is provided on each of the first sub-connecting piece and the second sub-connecting piece.

[0010] In one implementation, the main body is straight, and the plug-in portion and the battery cell connection portion are respectively arranged at both ends of the main body along the length direction; or,

[0011] The main body is flag-shaped, and a preset angle is formed between the plug-in portion and the battery core connecting portion.

[0012] In one implementation, the cross section of the end portion of the plug-in portion gradually decreases in a direction away from the battery core connection portion; or, the end portion of the plug-in portion is provided with a guiding slope; or,

[0013] The plug-in portion is provided with a limiting hole, and the limiting hole is used to cooperate with the limiting piece in the female terminal.

[0014] In one implementation, the transition portion is provided with a plurality of reinforcing ribs, and the reinforcing ribs extend between the plug-in portion and the battery cell connecting portion.

[0015] In one implementation, the thickness of the battery cell connecting portion is half the thickness of the plug-in portion.

[0016] In one implementation, the thickness of the battery cell connecting portion is 0.25-0.35 mm.

[0017] In one implementation, the width of the cell connecting portion is greater than the width of the transition portion;

[0018] The width of the transition portion is greater than the width of the plug-in portion.

[0019] In one implementation, the electrical connector is made of nickel.

[0020] A second aspect of the present application provides a battery assembly, comprising:

[0021] The electrical connector as described in the first aspect above; and

[0022] The battery, the cell connecting portion of the electrical connector is welded to the positive electrode and / or negative electrode of the battery.

[0023] The technical solution provided by this application may have the following beneficial effects:

[0024] The electrical connector of the present application comprises a main body, which includes a plug-in portion, a transition portion, and a cell connection portion. The plug-in portion, the transition portion, and the cell connection portion are integrally formed, with the transition portion connected between the cell connection portion and the plug-in portion. The cell connection portion is provided with a bump structure for welding to the cell electrode, and the plug-in portion is provided with a male terminal structure for plug-in connection. Because the plug-in portion, the transition portion, and the cell connection portion are integrally formed, assembly and disassembly are more convenient and quick, while also meeting the requirements of high-current charging and discharging.

[0025] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0027] Figure 1is a three-dimensional diagram of an electrical connector shown in an embodiment of the present application;

[0028] Figure 2 is a side view of an electrical connector shown in an embodiment of the present application;

[0029] Figure 3 This is a schematic diagram of the coordination between the electrical connector and the battery shown in an embodiment of the present application.

[0030] Figure numerals: 100, battery cell connection part; 200, plug-in part; 300, transition part; 110, first sub-connecting piece; 120, second sub-connecting piece; 111, bump structure; 130, shunt groove; 210, main body; 220, end; 211, guide slope; 230, through hole; 310, limiting step; 320, reinforcing rib; 400, battery; 410, electrode. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Instead, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0032] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. As used in this application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0033] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] In the description of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0035] Unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0036] In the related art, the plug-in terminal and the nickel sheet are generally two independent structures connected by welding wire. This connection structure not only cannot meet the high current charging and discharging requirements of the battery, but also has poor assembly and disassembly convenience and low versatility. To address the above problems, the embodiments of the present application provide an electrical connector and a battery assembly, which are more convenient and quick to assemble and disassemble, and can also meet the high current charging and discharging requirements.

[0037] The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0038] Figure 1 is a three-dimensional diagram of an electrical connector shown in an embodiment of the present application; Figure 2 It is a side view of the electrical connector shown in the embodiment of the present application.

[0039] See also Figure 1 and Figure 2 The electrical connector provided in the present application includes a main body, which includes a plug-in part 200, a transition part 300 and a battery cell connection part 100; the plug-in part 200, the transition part 300 and the battery cell connection part 100 are formed as one body, and the transition part 300 is connected between the battery cell connection part 100 and the plug-in part 200; the battery cell connection part 100 is provided with a bump structure 111, and the bump structure 111 is used for welding with the electrode of the battery cell, and the plug-in part 200 is provided with a male terminal structure for plugging and unplugging connection.

[0040] In the solution of the present application, since the plug-in portion 200, the transition portion 300 and the battery cell connecting portion 100 are formed as one body, assembly and disassembly are more convenient and quick, and can meet the charging and discharging requirements of large currents.

[0041] In this application, the main body is made of a metal with good conductivity such as nickel, aluminum, stainless steel, etc., and is formed by processes such as stamping, bending, shaping, and pressing.

[0042] The male terminal structure of this embodiment can be used interchangeably with the 187-type, 250-type and 110-type flag-shaped female terminals or straight female terminals commonly used in the market, and is easy to plug and unplug and has strong versatility.

[0043] In some embodiments, the cross-section of the end of the plug portion 200 gradually decreases in the direction away from the cell connection portion 100, forming a tapered end 220; or, the end of the plug portion 200 is provided with a guide slope 211. The guide slope 211 is inclined from the surface of the main body 210 toward the middle of the end, making it easier to achieve plug-in alignment when the female terminal is mated, making the plugging more accurate and smooth.

[0044] In some embodiments, the plug portion 200 is provided with a limiting hole for engaging with a limiting member in the female terminal. The limiting hole can be a through hole 230 opened in the thickness direction of the male terminal structure. The limiting hole can effectively improve the stability of the plug-in engagement between the male terminal structure and the female terminal.

[0045] In some embodiments, the width of the cell connecting portion 100 is greater than the width of the transition portion 300 ; the width of the transition portion 300 is greater than the width of the plug-in portion 200 , that is, the widths of the cell connecting portion 100 , the transition portion 300 and the plug-in portion 200 decrease in sequence.

[0046] In some embodiments, a limiting step 310 is provided at the junction of the male terminal structure and the transition portion 300. When the male terminal structure is inserted into the female terminal slot, the limiting step 310 can limit the insertion distance of the male terminal structure. The transition portion is provided with multiple reinforcing ribs 320, which extend between the plug portion 200 and the cell connection portion 100. This can enhance the structural strength and relative position stability of the plug portion 200 and the electrical connection portion 100.

[0047] In some embodiments, the thickness of the plug portion 200 is greater than the thickness of the electrical connection portion 100. Specifically, the thickness of the electrical connection portion 100 is half the thickness of the plug portion 200. For example, the thickness of the electrical connection portion 100 is 0.25-0.35 mm, and the thickness of the plug portion 200 is 0.5-0.7 mm. Nickel sheets in related art are generally thicker than 4 mm. Since the electrical connection portion 100 and the plug portion 200 of the present application are an integrated structure, the thickness of the battery cell connection portion 100 of the present application can be lower than the thickness of nickel sheets in related art, which facilitates welding to the battery 400 via a bump welding process.

[0048] In some embodiments, the cell connection portion 100 includes a first sub-connecting piece 110 and a second sub-connecting piece 120, a shunt groove 130 is provided between the first sub-connecting piece 110 and the second sub-connecting piece 120, and a bump structure 111 is provided on each of the first sub-connecting piece 110 and the second sub-connecting piece 120. Specifically, two bump structures 111 are provided on each of the first sub-connecting piece 110 and the second sub-connecting piece 120. The shunt groove 130 has a shunt effect on the current output by the battery 400, thereby preventing the local temperature on the electrical connector from being too high. The bump structure 111 is welded to the cell using a bump welding process, which can support high-rate discharge of the cell. The bump welding process is a resistance welding method that pre-processes one or more bumps on the bonding surface of a workpiece, makes it contact with the surface of another workpiece and heats it with electricity, and then collapses it to form a weld at these contact points.

[0049] In some embodiments, the main body is straight, and therefore is also called a straight terminal. The plug-in portion 200 and the cell connecting portion 100 are respectively arranged at both ends of the main body along the length direction.

[0050] In some embodiments, the main body is flag-shaped, with a predetermined angle formed between the plug portion 200 and the cell connection portion 100. This angle can be close to or equal to a right angle. When the main body is flag-shaped, the main body is bent at the transition portion 300, and the plug portion 200 and the cell connection portion 100 are perpendicular to each other.

[0051] Related technologies generally use wires to connect nickel sheets and male terminals. In high-current charging and discharging scenarios, the wire diameter needs to be increased, making wire welding inconvenient, structural stability poor, and transfer inconvenient, resulting in low versatility. In the solution of this application, the cell connection part 100 and the plug-in part 200 are integrated into a single structure, which can meet the needs of high-current charging and discharging. At the same time, it has high structural strength, convenient plugging and unplugging, and strong versatility.

[0052] Figure 3 Schematic diagram of the cooperation between the electrical connector and the battery 400 shown in an embodiment of the present application.

[0053] See also Figure 1-Figure 3 The present application also provides a battery 400 assembly, comprising an electrical connector as described in any of the above embodiments; and a battery 400, wherein the cell connection portion 100 of the electrical connector is welded to the electrode 410 of the battery 400, and the electrode 410 can be a positive electrode or a negative electrode.

[0054] The battery 400 can be a cylindrical battery 400. The cell connector 100 is welded to the positive and / or negative electrodes of the battery 400 using a bump welding process. The cell connector 100 can be closely attached to the surface of the positive and / or negative electrodes of the battery 400. When the main body is in a flag shape, the transition portion 300 is located at the edge of the positive and / or negative electrodes of the battery 400, and the plug portion 200 is parallel to the side of the battery 400.

[0055] The battery 400 assembly of the present application can be applied to electronic devices such as toys, Bluetooth headsets, remote controls, Bluetooth speakers, and mobile power supplies. The electrical connector of the present application can be applied to the assembly of single or multiple batteries 400 in electrical equipment. The positive and negative electrodes of the battery 400 are welded to the electrical connector. The battery 400 assembly and the positive and negative electrode electrical connectors are a whole, which are installed in the battery 400 slot of the electrical equipment by plugging and unplugging. The positive electrode of the battery 400 and the electrical connector are respectively plugged into and matched with the female terminals of the battery 400 slot. The battery 400 can be easily disassembled and assembled, has strong versatility, and can meet the charging and discharging requirements of large currents.

[0056] The embodiments of the present application have been described above. The above description is illustrative and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to the technology in the market, or to enable other persons skilled in the art to understand the embodiments disclosed herein.

Claims

1. An electrical connector, characterized in that: include: The main body includes a plug-in portion, a transition portion, and a cell connection portion; the plug-in portion, the transition portion, and the cell connection portion are formed as one body, and the transition portion is connected between the cell connection portion and the plug-in portion; The cell connection portion is provided with a convex structure for welding with the electrode of the cell, and the plug-in portion is provided with a male terminal structure for plug-in connection.

2. The electrical connector according to claim 1, wherein: The cell connecting portion includes a first sub-connecting piece and a second sub-connecting piece; A shunt groove is provided between the first sub-connecting piece and the second sub-connecting piece, and the bump structure is provided on each of the first sub-connecting piece and the second sub-connecting piece.

3. The electrical connector according to claim 1, wherein: The main body is straight, and the plug-in portion and the battery core connection portion are respectively arranged at both ends of the main body along the length direction; or, The main body is flag-shaped, and a preset angle is formed between the plug-in portion and the battery core connecting portion.

4. The electrical connector according to claim 1, wherein: The cross section of the end portion of the plug-in portion gradually decreases in the direction away from the battery core connection portion; or, the end portion of the plug-in portion is provided with a guiding slope; or, The plug-in portion is provided with a limiting hole, and the limiting hole is used to cooperate with the limiting piece in the female terminal.

5. The electrical connector according to claim 1, wherein: The transition portion is provided with a plurality of reinforcing ribs, and the reinforcing ribs extend between the plug-in portion and the battery core connecting portion.

6. The electrical connector according to claim 1, wherein: The thickness of the battery core connecting portion is half the thickness of the plug-in portion.

7. The electrical connector according to claim 1, wherein: The thickness of the battery core connecting portion is 0.25-0.35 mm.

8. The electrical connector according to claim 1, wherein: The width of the cell connecting portion is greater than the width of the transition portion; The width of the transition portion is greater than the width of the plug-in portion.

9. The electrical connector according to any one of claims 1 to 8, characterized in that: The material of the electrical connector is nickel.

10. A battery assembly, characterized in that: include: The electrical connector according to any one of claims 1 to 9; as well as The battery, the cell connecting portion of the electrical connector is welded to the positive electrode and / or negative electrode of the battery.

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