Flexible negative electrode connecting piece

Abstract

The utility model relates to the technical field of battery connecting pieces, in particular to a soft cathode connecting piece which comprises two groups of connecting parts, a soft part is arranged in the middle of the two groups of connecting parts, and a fixed seat is fixedly connected to the outer wall of one side, close to the soft part, of each group of connecting parts. A positioning assembly used for fixing the soft part is arranged on one side of the fixing base, the cross section of the soft part is in an arc shape, and the soft part comprises a nickel-plated copper sheet layer. According to the connecting piece, the soft part is arranged, and the soft copper sheet layer in the soft part is matched with the nickel-plated copper sheet layer, so that the middle part of the whole connecting piece has good ductility, the connecting piece cannot be broken and fractured in the long-term use process, and the stability of electrical connection among a plurality of groups of storage batteries is ensured; and the soft part and the two sets of connecting parts can be preliminarily and fixedly connected, and then the stability of connection between the connecting parts and the soft part is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of battery connecting pieces, in particular to a soft negative electrode connecting piece. Background Art

[0002] The battery connecting piece is a component that connects the battery top cover assembly to the battery body. The battery module usually uses the connecting piece to connect multiple single cells in series or in parallel.

[0003] The connecting piece is usually made of metal. During the welding process, the uneven heating of the connecting piece makes the temperature of the weld and its vicinity very high. After cooling, the weld will produce different degrees of contraction and internal stress, resulting in various deformations around the weld. In addition, in some mechanical abuse conditions such as vibration and impact, the weld here is prone to disconnection risk. Once disconnected, it will cause the battery pack to lose power, the car to lose power, and even cause the car to be destroyed and people to die. Therefore, a soft negative electrode connecting piece is urgently needed to solve the above problems. Utility Model Content

[0004] Based on the deficiencies in the prior art mentioned in the above background technology, the utility model provides a soft negative electrode connecting sheet.

[0005] The utility model overcomes the above technical problems by adopting the following technical solutions, specifically:

[0006] A soft negative electrode connecting sheet comprises a connecting part, wherein the connecting parts are in two groups, a soft part is arranged in the middle of the two groups of connecting parts, a fixing seat is fixedly connected to the outer wall of one side of the two groups of connecting parts close to the soft part, and a positioning component for fixing the soft part is arranged on one side of the fixing seat.

[0007] As a further solution of the utility model: the cross section of the soft part is arc-shaped.

[0008] As a further solution of the utility model: the soft portion includes a nickel-plated copper sheet layer;

[0009] A soft copper sheet layer is arranged on one side of the nickel-plated copper sheet layer.

[0010] It is a further solution of the utility model: the outer wall of the soft part is provided with convex strips, the convex strips are distributed in arcs with equal distances on the circumferential outer wall of the soft part, and the cross section of the convex strips is semicircular.

[0011] As a further solution of the utility model: a matching hole is provided on the top outer wall of the connecting portion;

[0012] A positioning hole is provided at the top of the matching hole, and the center of the matching hole is the same as that of the positioning hole.

[0013] As a further solution of the utility model: the positioning assembly includes a clamping hole opened on the outer wall of one side of the fixing seat, the cross section of the clamping hole is rectangular, and the clamping holes are distributed at equal distances on the outer wall of one side of the fixing seat;

[0014] A clamping rod is clamped inside the clamping hole, one end of the clamping rod away from the clamping hole is fixedly connected to a partition, and one side of the partition away from the clamping rod is fixedly connected to the soft part.

[0015] As a further solution of the utility model: the outer wall of one side of the fixing seat away from the connecting portion is in contact with the outer wall of one side of the partition;

[0016] The upper and lower sides of the fixing seat are both provided with welding parts, and the fixing seat is welded and fixed to the partition through the welding parts.

[0017] After adopting the above structure, the utility model has the following advantages compared with the prior art:

[0018] 1. In the utility model, by providing a soft part, the soft copper sheet layer inside it cooperates with the nickel-plated copper sheet layer, so that the middle part of the entire connecting piece has good ductility, and the connecting piece will not break or fracture during long-term use, thereby ensuring the stability of the electrical connection between multiple groups of batteries and avoiding sudden power failure of the batteries.

[0019] 2. In the utility model, by providing a positioning assembly, before the two groups of connecting parts in the connecting plate are fixedly connected, the clamping rod on one side of the partition can be first inserted into the clamping hole opened on one side of the fixing seat, so that the soft part and the two groups of connecting parts can be preliminarily fixedly connected, and then the partition and the fixing seat are welded and fixed, thereby ensuring the stability of the connection between the connecting part and the soft part.

[0020] 3. In the utility model, by providing convex strips and soft parts, local thickening of the soft part can be achieved, thereby increasing its anti-fracture performance. At the same time, the cross-section of the convex strips is semicircular, which can increase the contact area between the top of the soft part and the air, thereby improving the heat exchange efficiency of the soft part and avoiding local overheating damage of the connecting piece during the conduction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0022] Figure 2 It is a schematic diagram of the soft part split structure of the utility model.

[0023] Figure 3 For this utility model Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0024] Figure 4 It is a schematic diagram of the cross-sectional planar structure of the soft part of the utility model.

[0025] In the figure: 1, connecting part; 2, positioning hole; 3, matching hole; 4, fixing seat; 5, soft part; 5001, nickel-plated copper sheet layer; 5002, soft copper sheet layer; 6, welding part; 7, clamping hole; 8, clamping rod; 9, partition; 10, convex strip. DETAILED DESCRIPTION

[0026] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of this patent, it should be understood that the terms "center", "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 drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying 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 patent.

[0029] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0030] See also Figure 1 to Figure 4 In an embodiment of the utility model, a soft negative electrode connecting sheet includes a connecting part 1, and the number of the connecting parts 1 is two groups. A soft part 5 is arranged in the middle of the two groups of connecting parts 1, and a fixing seat 4 is fixedly connected to the outer wall of one side of the two groups of connecting parts 1 close to the soft part 5, and a positioning component for fixing the soft part 5 is arranged on one side of the fixing seat 4.

[0031] Preferably, the cross section of the soft portion 5 is arc-shaped.

[0032] Preferably, the soft portion 5 comprises a nickel-plated copper sheet layer 5001;

[0033] A soft copper sheet layer 5002 is arranged on one side of the nickel-plated copper sheet layer 5001. The soft copper sheet layer 5002 inside the soft part 5 arranged inside the connecting piece cooperates with the nickel-plated copper sheet layer 5001, so that the middle part of the entire connecting piece has good ductility, and the connecting piece will not break or fracture during long-term use.

[0034] Preferably, the outer wall of the soft part 5 is provided with convex strips 10, and the convex strips 10 are distributed in arc shapes at equal distances on the circumferential outer wall of the soft part 5, and the cross-section of the convex strips 10 is semicircular, which can achieve local thickening of the soft part 5, thereby increasing its anti-fracture performance. At the same time, the cross-section of the convex strips 10 is semicircular, which can increase the contact area between the top of the soft part 5 and the air, thereby improving the heat exchange efficiency of the soft part 5 and avoiding local overheating damage of the connecting piece during the conduction process.

[0035] Preferably, a matching hole 3 is provided on the top outer wall of the connecting portion 1;

[0036] A positioning hole 2 is provided at the top of the matching hole 3 , and the matching hole 3 and the positioning hole 2 have the same center.

[0037] Preferably, the positioning assembly includes a clamping hole 7 opened on the outer wall of one side of the fixing seat 4, the cross section of the clamping hole 7 is rectangular, and the clamping holes 7 are distributed at equal distances on the outer wall of one side of the fixing seat 4;

[0038] A clamping rod 8 is clamped inside the clamping hole 7, and a partition 9 is fixedly connected to one end of the clamping rod 8 away from the clamping hole 7. The side of the partition 9 away from the clamping rod 8 is fixedly connected to the soft part 5. The clamping rod 8 on one side of the partition 9 can be first inserted into the clamping hole 7 opened on one side of the fixing seat 4, so that the soft part 5 can be preliminarily fixedly connected with the two sets of connecting parts 1, thereby ensuring the stability of the subsequent connection between the connecting part 1 and the soft part 5.

[0039] Preferably, an outer wall of one side of the fixing seat 4 away from the connecting portion 1 is in contact with an outer wall of one side of the partition plate 9;

[0040] The fixing seat 4 is provided with welding parts 6 on both the upper and lower sides. The fixing seat 4 is welded and fixed to the partition plate 9 through the welding parts 6, thereby ensuring the stability of the connection between the connecting part 1 and the soft part 5.

[0041] Working principle: Before the two groups of connecting parts 1 in the connecting piece are fixedly connected, the clamping rod 8 on one side of the partition 9 can be inserted into the clamping hole 7 opened on one side of the fixing seat 4, so that the soft part 5 can be preliminarily fixedly connected with the two groups of connecting parts 1, and then the partition 9 and the fixing seat 4 are welded and fixed, thereby ensuring the stability of the connection between the connecting part 1 and the soft part 5. At the same time, the connecting piece can make the middle part of the entire connecting piece have good ductility through the soft copper sheet layer 5002 inside the soft part 5 set inside it and the nickel-plated copper sheet layer 5001. The connection piece will not break or fracture during long-term use, thereby ensuring the stability of the electrical connection between multiple battery groups and avoiding sudden power failure of the battery. The convex strips 10 arranged on the circumferential outer wall of the soft part 5 can achieve local thickening of the soft part 5, thereby increasing its anti-fracture performance. At the same time, the cross-section of the convex strips 10 is semicircular, which can increase the contact area between the top of the soft part 5 and the air, thereby improving the heat exchange efficiency of the soft part 5 and avoiding local overheating damage of the connection piece during the conductive process.

[0042] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention.

Claims

1. A soft negative electrode connecting sheet, comprising a connecting portion (1), characterized in that: The number of the connecting parts (1) is two groups, and a soft part (5) is arranged in the middle of the two groups of connecting parts (1). A fixing seat (4) is fixedly connected to the outer wall of one side of the two groups of connecting parts (1) close to the soft part (5), and a positioning component for fixing the soft part (5) is arranged on one side of the fixing seat (4).

2. A soft negative electrode connecting sheet according to claim 1, characterized in that: The cross section of the soft part (5) is arc-shaped.

3. A soft negative electrode connecting sheet according to claim 2, characterized in that: The soft part (5) comprises a nickel-plated copper sheet layer (5001); A soft copper sheet layer (5002) is provided on one side of the nickel-plated copper sheet layer (5001).

4. The soft negative electrode connecting sheet according to claim 3, characterized in that: The outer wall of the soft part (5) is provided with convex strips (10), the convex strips (10) are distributed in arcs at equal distances on the circumferential outer wall of the soft part (5), and the cross section of the convex strips (10) is semicircular.

5. The soft negative electrode connecting sheet according to claim 4, characterized in that: The top outer wall of the connecting portion (1) is provided with a matching hole (3); A positioning hole (2) is provided at the top of the matching hole (3), and the matching hole (3) and the positioning hole (2) have the same center.

6. The soft negative electrode connecting sheet according to claim 5, characterized in that: The positioning assembly comprises a clamping hole (7) provided on an outer wall of one side of the fixing seat (4), the cross section of the clamping hole (7) is rectangular, and the clamping holes (7) are distributed at equal distances on the outer wall of one side of the fixing seat (4); A clamping rod (8) is clamped inside the clamping hole (7), and one end of the clamping rod (8) away from the clamping hole (7) is fixedly connected to a partition (9), and the side of the partition (9) away from the clamping rod (8) is fixedly connected to the soft part (5).

7. The soft negative electrode connecting sheet according to claim 6, characterized in that: An outer wall of one side of the fixing seat (4) away from the connecting portion (1) contacts an outer wall of one side of the partition plate (9); The fixing seat (4) is provided with welding parts (6) on both the upper and lower sides, and the fixing seat (4) is fixed to the partition plate (9) by welding through the welding parts (6).

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