Clamp for detecting alternating-current internal resistance of upper cover of battery

Abstract

A clamp for detecting AC internal resistance of a battery upper cover belongs to the technical field of battery production. The upper end of the stand column is in spherical hinge joint with one end of the connecting rod, and the other end of the connecting rod is fixedly connected with the back face of the positioning plate, and the front face of the positioning plate is provided with a positioning groove. A pressing mechanism is arranged on one side of the positioning plate and comprises a hand screw and a gasket; the hand screw is horizontally screwed with one side wall of the positioning plate through threads, and the inner end of the hand screw is connected with the middle of the gasket. According to the utility model, through the arrangement of the positioning plate and the pressing piece, the rapid preliminary positioning and stable fixation of the battery upper cover are realized, the internal resistance of the upper cover can be conveniently detected, the operation process is simplified, the working efficiency is improved, and the stability of the upper cover in the detection process is ensured. Meanwhile, the angle of the positioning plate is allowed to be flexibly adjusted by an operator according to the operation habit of the operator through the spherical hinge arrangement, and the convenience and comfort of operation are improved.

Description

Technical Field

[0001] The utility model relates to a clamp for detecting the AC internal resistance of a battery upper cover, belonging to the technical field of battery production. Background Art

[0002] AC internal resistance is one of the important technical indicators of the battery cover. During the manufacturing process, it is necessary to accurately measure the internal resistance of multiple points between the main components of the cover.

[0003] In actual testing, the general approach is to place the upper cover on an insulating plane, then use a tester to connect each point of the upper cover in turn and obtain the resistance value.

[0004] However, since the front and back surfaces of the upper cover are not flat, when the contacts of the detection instrument overlap the surface of the upper cover, it is very easy for the upper cover to shake and flip, resulting in poor contact between the contacts and the measuring points of the upper cover, which has an adverse impact on detection accuracy and operational convenience. Utility Model Content

[0005] In order to solve the problems existing in the background technology, the utility model provides a clamp for detecting the AC internal resistance of a battery cover.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solution: a clamp for detecting the AC internal resistance of a battery cover, comprising a positioning plate, a column, a connecting rod and a base; the upper end of the base is fixedly connected to the lower end of the vertically arranged column, the upper end of the column is connected to one end of the connecting rod, the other end of the connecting rod is fixedly connected to the back side of the positioning plate, and a positioning groove is provided on the front side of the positioning plate.

[0007] A clamping mechanism is provided on one side of the positioning plate, and the clamping mechanism includes a hand screw and a gasket; the hand screw is horizontally screwed to a side wall of the positioning plate through a thread, and the inner end of the hand screw is connected to the middle of the gasket.

[0008] The upper end of the column is ball-jointed to one end of the connecting rod.

[0009] The left and right ends of the back side of the positioning plate are both provided with through holes penetrating the positioning slot.

[0010] An accommodating groove is provided in the middle of the positioning groove.

[0011] A support plate for supporting the lead piece is provided at the lower end of the positioning plate.

[0012] The positioning plate, the supporting plate and the gasket are all made of insulating materials.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] This utility model, through the provision of a positioning plate and a clamping member, achieves rapid initial positioning and secure fixation of the battery cover, facilitating internal resistance testing of the cover, simplifying the operating process, improving work efficiency, and ensuring the stability of the cover during testing. Furthermore, the ball-jointed joint allows the operator to flexibly adjust the angle of the positioning plate according to their operating habits, enhancing operational convenience and comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 yes Figure 1 A magnified view of point A;

[0017] Figure 3 yes Figure 1 Rear view;

[0018] Figure 4 This is a reference diagram of the use state of the utility model;

[0019] Figure 5 This is a disassembled diagram of the utility model and the upper cover;

[0020] Figure 6 This is a schematic diagram of angle adjustment of the utility model. DETAILED DESCRIPTION

[0021] The technical solutions of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] Example 1:

[0023] A fixture for detecting the AC internal resistance of a battery cover comprises a positioning plate 1, a column 31, a connecting rod 32 and a base; the upper end of the base is fixedly connected to the lower end of the vertically arranged column 31, the upper end of the column 31 is connected to one end of the connecting rod 32, the other end of the connecting rod 32 is fixedly connected to the back of the positioning plate 1, the connecting rod 32 is used to provide stable support for the positioning plate 1, and a positioning groove 4 is provided on the front of the positioning plate 1.

[0024] A clamping mechanism 2 is provided on one side of the positioning plate 1, and the clamping mechanism 2 includes a hand screw 21 and a gasket 22; the hand screw 21 is horizontally screwed to a side wall of the positioning plate 1 through a thread, and the inner end of the hand screw 21 is rotatably connected to the middle part of the gasket 22 through a bearing.

[0025] The pressing member 2 may also include a gasket 22 and a spring, wherein the spring is horizontally fixed to an inner side wall of the positioning plate 1, and the other end of the spring is fixedly connected to the gasket 22. In this way, the upper cover 8 can be automatically clamped and positioned.

[0026] The upper end of the column 31 is ball-jointed to one end of the connecting rod 32 , and the ball-joint connection facilitates adjustment of the tilt angle of the positioning plate 1 .

[0027] When using the utility model, first insert the upper cover 8 into the positioning groove 4 of the positioning plate 1 to perform preliminary positioning of the upper cover 8, then turn the hand screw 21, press the upper cover 8 through the gasket 22, and fix the upper cover 8 in the positioning plate 1 to achieve positioning and fixing of the upper cover 8.

[0028] Then, according to the operating habits of different operators, the operating angle of the connecting rod 32 is adjusted through the ball joint to drive the positioning plate 1 to rotate to an angle that is convenient for operation. At this time, the upper cover 8 is fully and effectively fixed and supported, and the operator can use the instrument to easily detect the AC internal resistance of the upper cover 8.

[0029] Example 2:

[0030] The difference between this embodiment and embodiment 1 is that:

[0031] The left and right ends of the back side of the positioning plate 1 are both provided with through holes 5 penetrating the positioning slot 4 .

[0032] The two through holes 5 correspond to the positions of the positive and negative poles of the upper cover 8. The size of the through holes 5 is larger than the size of the positive and negative poles of the upper cover 8. When it is necessary to detect the internal resistance between the positive and negative poles of the upper cover 8 and the back part of the upper cover 8, one contact of the internal resistance tester is passed through the through hole 5 and overlapped on the positive and negative poles of the upper cover 8, and the other contact is overlapped on the back part of the upper cover 8 to complete the detection.

[0033] An accommodating groove 6 is provided in the middle of the positioning groove 4 .

[0034] The accommodating groove 6 corresponds to the explosion-proof valve of the upper cover 8, and the explosion-proof valve of the upper cover 8 can be inserted into the accommodating groove 6, so the panel of the upper cover 8 can be close to the inner wall of the positioning groove 4, making the positioning of the upper cover 8 on the positioning plate 1 more stable.

[0035] A support plate 7 for supporting the lead piece 9 is provided at the lower end of the positioning plate 1 .

[0036] Since the lead piece 9 is extremely thin, when the contact of the internal resistance tester contacts the lead piece 9, it is very easy for the lead piece 9 to bend and deform, which is inconvenient for detection. The design of the support plate 7 allows the lead piece 9 to abut against the support plate 7 when the contact overlaps the lead piece 9, and the support plate 7 is effectively supported. The support plate 7 no longer bends, which facilitates detection and effectively protects the lead piece 9.

[0037] The positioning plate 1 , the support plate 7 and the gasket 22 are all made of insulating materials.

[0038] After the upper cover 8 is installed in place, the positioning plate 1 , the support plate 7 and the gasket 22 are in direct contact with the upper cover 8 . This design can prevent the above structure from affecting the AC internal resistance measurement result of the upper cover 8 .

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0040] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A fixture for detecting AC internal resistance of a battery cover, characterized by: The invention comprises a positioning plate (1), a column (31), a connecting rod (32) and a base; the upper end of the base is fixedly connected to the lower end of the vertically arranged column (31); the upper end of the column (31) is connected to one end of the connecting rod (32); the other end of the connecting rod (32) is fixedly connected to the back side of the positioning plate (1); and a positioning groove (4) is provided on the front side of the positioning plate (1).

2. A battery cover AC internal resistance detection fixture according to claim 1, characterized in that: A clamping mechanism (2) is provided on one side of the positioning plate (1), and the clamping mechanism (2) includes a hand screw (21) and a gasket (22); the hand screw (21) is horizontally screwed to a side wall of the positioning plate (1) through a thread, and the inner end of the hand screw (21) is connected to the middle of the gasket (22).

3. A battery cover AC internal resistance detection fixture according to claim 1, characterized in that: The upper end of the column (31) is spherically hinged to one end of the connecting rod (32).

4. The battery cover AC internal resistance detection fixture according to claim 1, characterized in that: Through holes (5) penetrating the positioning groove (4) are provided at both left and right ends of the back side of the positioning plate (1).

5. The battery cover AC internal resistance detection fixture according to claim 1, characterized in that: A receiving groove (6) is provided in the middle of the positioning groove (4).

6. The battery cover AC internal resistance detection fixture according to claim 1, characterized in that: A support plate (7) for supporting a lead piece (9) is provided at the lower end of the positioning plate (1).

7. The battery cover AC internal resistance detection fixture according to claim 2, characterized in that: The positioning plate (1), the supporting plate (7) and the gasket (22) are all made of insulating materials.

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