CN221226498U

CN221226498U - Thickened nickel piece welding stress eliminating and anti-vibration device

Info

Publication number: CN221226498U
Application number: CN202323094577.7U
Authority: CN
Inventors: 陈忠平; 温遂云; 曾伟伟; 吴启杰; 黄颖; 余宏清
Original assignee: Celte Battery Technology Zhongshan Co ltd
Current assignee: Celte Battery Technology Zhongshan Co ltd
Priority date: 2023-11-16
Filing date: 2023-11-16
Publication date: 2024-06-25
Anticipated expiration: 2033-11-16

Abstract

The utility model discloses a thickened nickel piece welding stress eliminating and anti-seismic device, which comprises: the battery cell connecting part is a metal sheet with an arc-shaped structure at two ends; the first diversion trench is provided with at least one diversion trench and is arranged at two ends of the cell connecting part in parallel; the arc-shaped plate is arranged at the end part of the cell connecting part and is used for eliminating welding stress; BMS connecting portion, BMS connecting portion are arranged in the tip of arc, the one end that the arc was kept away from to BMS connecting portion is equipped with No. two guiding gutter for electric current water conservancy diversion and heat dissipation, and the beneficial effect of the utility model is: through setting up nickel piece as integrated into one piece part, make it have fine conductive property and intensity, the arc is the design of semicircle, has fine compressive and tensile capacity to make the stress concentration that the production was made to arc department, and then eliminate welding stress, prevent to lead to nickel piece solder joint department to drop or bend the department fracture in the vibration in transportation and use.

Description

Thickened nickel piece welding stress eliminating and anti-vibration device

Technical Field

The utility model relates to the technical field of battery parts, in particular to a thickened nickel plate welding stress eliminating and anti-vibration device.

Background

When electric core and BMS pass through nickel piece connection, prior art is direct to nickel piece bending into right angle and welds, and thickening formula nickel piece has the elastic deformation and is strong, and plasticity is poor characteristics, produces the stress in solder joint department and department of bending easily during manufacturing, and vibration condition in transportation and use can lead to nickel piece solder joint department to drop or the department of bending fracture.

Disclosure of utility model

The utility model aims to provide a thickened nickel sheet welding stress eliminating and anti-vibration device for solving the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a thickened nickel plate welding stress relief and shock resistance device, comprising:

the battery cell connecting part is a metal sheet with an arc-shaped structure at two ends;

the first diversion trench is provided with at least one diversion trench and is arranged at two ends of the cell connecting part in parallel;

The arc-shaped plate is arranged at the end part of the cell connecting part and is used for eliminating welding stress;

BMS connecting portion, BMS connecting portion are arranged in the tip of arc, the one end that the arc was kept away from to BMS connecting portion is equipped with No. two guiding gutter for electric current water conservancy diversion and heat dissipation.

Preferably, two first resistance welding protrusions are arranged on two sides of each first diversion trench.

Preferably, two groups of second resistance welding protrusions are arranged at one end, close to the second diversion trench, of the BMS connecting portion, the second resistance welding protrusions are symmetrical with respect to the length direction of the second diversion trench, and each group of second resistance welding protrusions are two.

Preferably, through holes for preventing cracking after resistance welding are formed in the two ends of the first diversion trench and one end, close to the arc-shaped plate, of the second diversion trench.

Preferably, two sides of the cell connecting part are provided with glue fitting clamping grooves.

Compared with the prior art, the utility model has the beneficial effects that: through setting up nickel piece as integrated into one piece part, make it have fine conductive property and intensity, arc 2 is the design of semicircle, has fine compressive and tensile ability to make the stress concentration that the production was made to arc 2 departments, and then eliminate welding stress, prevent to lead to nickel piece solder joint department to drop or bend the department fracture in the vibration in transportation and use.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a side view of the present utility model;

FIG. 3 is a top view of the present utility model;

fig. 4 is a schematic view of the installation structure of the present utility model.

In the figure: 1. a BMS connection part; 2. an arc-shaped plate; 3. a cell connection part; 4. a first resistance welding bump; 5. a first diversion trench; 6. a glue fitting clamping groove is formed; 7. a second resistance welding protrusion; 8. and a second diversion trench.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution: a thickened nickel plate welding stress relief and shock resistance device, comprising:

The battery core connecting part 3 is a nickel sheet with arc structures at two ends; two first diversion trenches 5 are arranged, and the two first diversion trenches 5 are mutually parallel and are arranged at two ends of the cell connecting part 3; the arc-shaped plate 2 is connected to the end part of the cell connecting part 3 and is used for eliminating welding stress; BMS connecting portion 1 connect the tip at arc 2, and BMS connecting portion 1 is kept away from the one end of arc 2 and is opened No. two guiding gutter 8 for electric current water conservancy diversion and heat dissipation.

It should be noted that, the BMS connection part 1, the arc plate 2 and the cell connection part 3 are all made of nickel, and the three parts are integrally formed, the nickel can effectively transfer current, and the nickel has low corrosiveness to oxygen and water, so that the battery can maintain good performance when being used for a long time; nickel is easy to process and shape, nickel plates with different shapes and sizes can be adopted according to the requirements of different battery designs, the nickel plates are easy to weld, so that each component is connected in the battery assembly process more conveniently, the arc plate 2 is of a semicircular arc design and has good compression resistance and tensile resistance, so that stress generated by production and manufacture is concentrated to the arc plate 2, welding stress is eliminated, the nickel plate welding point is prevented from falling off or the bending part is prevented from breaking due to vibration in the transportation and use process, an included angle between the BMS connecting part 1 and the battery core connecting part 3 is 100 degrees, the battery protection plate can be protected, only the position of the battery protection plate is in press contact with each other in sequence in each installation, 2 positions of the battery protection plate cannot be connected simultaneously, and the installation mode is shown in fig. 4.

Referring to fig. 1, two first resistance welding protrusions 4 are disposed on two sides of each first diversion trench 5, two second resistance welding protrusions 7 are disposed at one end of the bms connection portion 1, which is close to the second diversion trench 8, and the two second resistance welding protrusions 7 are symmetrical with respect to the length direction of the second diversion trench 8, and each second resistance welding protrusion 7 is two.

In the utility model, the nickel sheet T is more than 0.3, and the resistance welding process cannot be performed, so that the resistance welding protrusions are added on the outer side, the height of the resistance welding protrusions is 0.3-0.5, and the nickel sheet and the positive and negative electrodes of the battery cell are ensured to be contacted by melting and leveling after welding according to the process requirements.

Referring to fig. 1 and 3, through holes for preventing cracking after resistance welding are formed at both ends of the first diversion trench 5 and one end of the second diversion trench 8, which is close to the arc plate 2.

It should be noted that, the ends of the first diversion trench 5 and the second diversion trench 8 are respectively provided with a round hole, after resistance welding, stress concentration is easily caused by an acute angle, and thermal stress formed in the welding process may be more easily caused to crack.

Referring to fig. 1, 2 and 3, two sides of the cell connecting portion 3 are provided with glue fitting slots 6.

It should be noted that the utility model is provided with the groove of the isosceles trapezoid structure of the glue fitting clamping groove 6, which is convenient for matching with the glue.

In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defining "first," "second," "third," "fourth" may explicitly or implicitly include at least one such feature.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a thickening formula nickel piece welding stress relief and antidetonation device which characterized in that includes:

The battery cell connecting part (3), the battery cell connecting part (3) is a metal sheet with an arc-shaped structure at two ends;

the first diversion trenches (5) are provided with at least one diversion trench (5) and are arranged at two ends of the cell connecting part (3) in parallel;

the arc-shaped plate (2) is arranged at the end part of the cell connecting part (3) and is used for eliminating welding stress;

BMS connecting portion (1), BMS connecting portion (1) are arranged in the tip of arc (2), the one end that arc (2) was kept away from to BMS connecting portion (1) is equipped with second guiding gutter (8) for electric current water conservancy diversion and heat dissipation.

2. The thickened nickel piece welding stress relief and shock resistant device of claim 1, wherein: two first resistance welding protrusions (4) are arranged on two sides of each first diversion trench (5).

3. The thickened nickel piece welding stress relief and shock resistant device of claim 1, wherein: one end of BMS connecting portion (1) near No. two guiding gutter (8) is equipped with two sets of No. two resistance welding protruding (7), two No. two resistance welding protruding (7) are symmetrical about No. two guiding gutter (8) length direction, every group No. two resistance welding protruding (7) are two.

4. The thickened nickel piece welding stress relief and shock resistant device of claim 1, wherein: the two ends of the first diversion trench (5) and one end of the second diversion trench (8) close to the arc-shaped plate (2) are respectively provided with a through hole for preventing cracking after resistance welding.

5. The thickened nickel piece welding stress relief and shock resistant device of claim 1, wherein: both sides of the battery cell connecting part (3) are provided with glue fitting clamping grooves (6).