Battery test fixture

Abstract

The utility model provides a battery test fixture, which is suitable for a battery cell and comprises a first fixture unit arranged on a positive electrode of the battery cell and a second fixture unit arranged on a negative electrode of the battery cell, the first clamp unit comprises a first clamp body, a first top screw, a first conductive gasket, a plurality of first side face screws and a plurality of first side face gaskets, the first clamp body is arranged on the outer side of the battery cell, and a gap is formed between the first clamp body and the battery cell; the first conductive gasket is respectively abutted against the positive electrode of the battery cell and the first top screw, and the first top screw is arranged at the top of the first clamp body; the first side face screws are symmetrically arranged on the two side faces of the first clamp body, the first side face screws abut against the side faces of the battery cell through the first side face gaskets, and the first side face screws and the first side face gaskets are arranged in a one-to-one correspondence mode. The battery cell fixing structure can effectively fix the battery cell and is good in stability.

Description

Technical Field

[0001] The utility model belongs to the technical field of batteries, and in particular relates to a battery testing fixture. Background Art

[0002] Lithium-ion batteries have the advantages of high voltage, high specific energy, long cycle life, and long storage time. They are widely used in new energy vehicles, energy storage, portable electronic devices and other industries. Generally, lithium batteries need to be tested for electrical and safety performance after they are manufactured. During and after the test, the battery cells need to be charged or discharged to collect battery test data. At present, most common battery cells are minimalist cover cells. Before testing, the test cells need to be welded with connecting plates so that the wiring harness of the test cabinet can be connected to the battery for testing. At the end of the test, the connecting plates need to be removed, which consumes manpower and material resources. Utility Model Content

[0003] The utility model provides a battery test fixture, which aims to solve the problems that the existing battery cells need to be welded with connecting pieces before testing, and the connecting pieces need to be removed after the test, which wastes manpower and material resources.

[0004] To achieve the above-mentioned purpose, the embodiment of the utility model provides a battery test fixture, which is applicable to a battery cell, and includes a first fixture unit arranged at the positive electrode of the battery cell and a second fixture unit arranged at the negative electrode of the battery cell;

[0005] The first clamp unit includes a first clamp body, a first top screw, a first conductive gasket, several first side screws and several first side gaskets. The first clamp body is arranged on the outside of the battery cell, and a gap is arranged between the first clamp body and the battery cell; the first conductive gasket is respectively abutted against the positive electrode of the battery cell and the first top screw, and the first top screw is arranged on the top of the first clamp body; several first side screws are symmetrically arranged on both side surfaces of the first clamp body, the first side screw is abutted against the side of the battery cell through the first side gasket, and the first side screw and the first side gasket are arranged one by one.

[0006] As a preferred embodiment, the first clamp body includes a first top panel, a first side panel and a second side panel, the first side panel and the second side panel are symmetrically arranged, and the first top panel is perpendicular to the first side panel and the second side panel, respectively; the first top screw is fixed to the first top panel, and several of the first side screws are symmetrically arranged on the first side panel and the second side panel.

[0007] As a preferred embodiment, the first top panel, the first side panel and the second side panel are integrally formed; the first top panel is arranged close to the positive electrode of the battery cell, and the first side panel and the second side panel are respectively arranged on both sides of the battery cell.

[0008] As a preferred embodiment, the first clamp unit and the second clamp unit are independent of each other and are symmetrically arranged.

[0009] As a preferred embodiment, the second clamp unit includes a second clamp body, a second top screw, a second conductive gasket, several second side screws and several second side gaskets, the second clamp body is arranged on the outside of the battery cell, and a gap is arranged between the second clamp body and the battery cell; the second conductive gasket abuts against the negative electrode of the battery cell and the second top screw respectively, and the second top screw is arranged on the top of the second clamp body; several second side screws are symmetrically arranged on both sides of the second clamp body, the second side screw abuts against the side of the battery cell through the second side gasket, and the second side screw and the second side gasket are arranged one by one. The top screw cooperates with the conductive gasket to fix the battery cell and lead out the connecting wire for the battery cell.

[0010] As a preferred embodiment, the second clamp body includes a second top panel, a third side panel and a fourth side panel, the third side panel and the fourth side panel are symmetrically arranged, and the second top panel is perpendicularly arranged to the third side panel and the fourth side panel respectively; the second top screw is fixed to the second top panel, and several of the second side screws are symmetrically arranged on the third side panel and the fourth side panel.

[0011] As a preferred embodiment, the second top panel, the third side panel and the fourth side panel are integrally formed; the second top panel is arranged close to the negative pole of the battery cell, and the third side panel and the fourth side panel are respectively arranged on both sides of the battery cell.

[0012] As a preferred embodiment, the first top screw, the first side screws, the second top screw and the second side screws are all fastening screws.

[0013] As a preferred embodiment, the first side gaskets and the second side gaskets are all rubber gaskets. The side gaskets cooperate with the side screws to fix the battery core and ensure that the battery core will not fall out of the cavity.

[0014] When in use, take out the first fixture unit, place the positive pole of the battery cell to be tested in the cavity of the first fixture unit, and after it is placed in place, fix the battery cell by tightening the screws, first fix the side screws, and finally fix the top screws. The fixing operation of the second fixture unit is the same as that of the first fixture unit. After fixing, use the connection harness of the test equipment to connect to the top screw to achieve a close connection between the test equipment and the battery cell.

[0015] Through the structure of this application, the welding process of each battery cell is eliminated, energy is saved, material waste is reduced, and test efficiency is improved. At the same time, the fastening screws of the structure of this application are adjustable, and the adaptation range is wide, and it can adapt to battery cells of different thicknesses, different widths, and different pole spacings. And the fixture can be recycled. The structure of this application is simple, can effectively fix the battery cell, has good stability, and the main body of the fixture is made of insulating material, which can ensure the safety of the tester and the test process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of a battery testing fixture according to an embodiment of the utility model;

[0018] Figure 2 yes Figure 1 A schematic structural diagram of a first fixture unit of a battery test fixture;

[0019] Figure 3 yes Figure 1 A schematic structural diagram of a second fixture unit of a battery test fixture;

[0020] Figure 4 It is a schematic diagram of the battery testing fixture in use according to an embodiment of the utility model. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present utility model are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present utility model.

[0022] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0023] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0024] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0025] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0026] Specifically, Figures 1 to 4 As shown, an embodiment of the utility model provides a battery test fixture, which is suitable for a battery cell 100, comprising a first fixture unit 10 disposed at the positive electrode of the battery cell 100 and a second fixture unit 20 disposed at the negative electrode of the battery cell 100;

[0027] The first clamp unit 10 includes a first clamp body 11, a first top screw 12, a first conductive gasket 13, several first side screws 14 and several first side gaskets 15. The first clamp body 11 is arranged on the outside of the battery cell 100, and a gap is arranged between the first clamp body 11 and the battery cell 100; the first conductive gasket 13 is respectively abutted against the positive electrode of the battery cell 100 and the first top screw 12, and the first top screw 12 is arranged on the top of the first clamp body 11; several first side screws 14 are symmetrically arranged on both side surfaces of the first clamp body 11, and the first side screw 14 is abutted against the side of the battery cell 100 through the first side gasket 15, and the first side screw 14 and the first side gasket 15 are arranged one by one.

[0028] As a preferred embodiment, the first clamp body 11 includes a first top panel 111, a first side panel 112 and a second side panel 113, the first side panel 112 and the second side panel 113 are symmetrically arranged, and the first top panel 111 is respectively perpendicular to the first side panel 112 and the second side panel 113; the first top screw 12 is fixed on the first top panel 111, and several of the first side screws 14 are symmetrically arranged on the first side panel 112 and the second side panel 113.

[0029] As a preferred embodiment, the first top panel 111, the first side panel 112 and the second side panel 113 are integrally formed; the first top panel 111 is arranged close to the positive pole of the battery cell 100, and the first side panel 112 and the second side panel 113 are respectively arranged on both sides of the battery cell 100.

[0030] As a preferred embodiment, the first clamp unit 10 and the second clamp unit 20 are independent of each other and symmetrically arranged.

[0031] As a preferred embodiment, Figure 3As shown, the second clamp unit 20 includes a second clamp body 21, a second top screw 22, a second conductive gasket 23, a plurality of second side screws 24 and a plurality of second side gaskets 25. The second clamp body 21 is arranged outside the battery cell 100, and a gap is arranged between the second clamp body 21 and the battery cell 100. The second conductive gasket 23 abuts against the negative electrode of the battery cell 100 and the second top screw 22, respectively. The second top screw 22 is arranged on the top of the second clamp body 21. A plurality of second side screws 24 are symmetrically arranged on both sides of the second clamp body 21. The second side screws 24 abut against the side of the battery cell 100 through the second side gasket 25, and the second side screws 24 and the second side gaskets 25 are arranged one by one. The top screws cooperate with the conductive gaskets to fix the battery cell and lead out the connecting wires for the battery cell.

[0032] As a preferred embodiment, the second clamp body 21 includes a second top panel 211, a third side panel 212 and a fourth side panel 213, the third side panel 212 and the fourth side panel 213 are symmetrically arranged, and the second top panel 211 is respectively perpendicularly arranged to the third side panel 212 and the fourth side panel 213; the second top screw 22 is fixed on the second top panel 211, and several second side screws 24 are symmetrically arranged on the third side panel 212 and the fourth side panel 213.

[0033] As a preferred embodiment, the second top panel 211, the third side panel 212 and the fourth side panel 213 are integrally formed; the second top panel 211 is arranged close to the negative pole of the battery cell 100, and the third side panel 212 and the fourth side panel 213 are respectively arranged on both sides of the battery cell 100.

[0034] As a preferred embodiment, the first top screw 12 , the first side screws 14 , the second top screw 22 , and the second side screws 24 are all fastening screws.

[0035] As a preferred embodiment, the first side gaskets 15 and the second side gaskets 25 are all rubber gaskets. The side gaskets cooperate with the side screws to fix the battery cell and ensure that the battery cell will not fall out of the cavity.

[0036] In the embodiment of the present application, the number of side screws and side washers can be set according to actual use needs, and is generally set to an even number, which is convenient for symmetrically fixing the battery cells and conducive to the stability of the fixation. Specifically, in the present embodiment, the number of side screws and side washers of each clamp unit is set to 4, and the 4 side screws and side washers are symmetrically distributed.

[0037] When in use, take out the first fixture unit, place the positive pole of the battery cell to be tested in the cavity of the first fixture unit, and after it is placed in place, fix the battery cell by tightening the screws, first fix the side screws, and finally fix the top screws. The fixing operation of the second fixture unit is the same as that of the first fixture unit. After fixing, use the connection harness of the test equipment to connect to the top screw to achieve a close connection between the test equipment and the battery cell.

[0038] Through the structure of this application, the welding process of each battery cell is eliminated, energy is saved, material waste is reduced, and test efficiency is improved. At the same time, the fastening screws of the structure of this application are adjustable, and the adaptation range is wide, and it can adapt to battery cells of different thicknesses, different widths, and different pole spacings. And the fixture can be recycled. The structure of this application is simple, can effectively fix the battery cell, has good stability, and the main body of the fixture is made of insulating material, which can ensure the safety of the tester and the test process.

[0039] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0040] In addition, it should be understood that although this specification is described according to 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 may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery test fixture, suitable for battery cells, characterized in that: It includes a first clamp unit arranged at the positive electrode of the battery cell and a second clamp unit arranged at the negative electrode of the battery cell; The first clamp unit includes a first clamp body, a first top screw, a first conductive gasket, several first side screws and several first side gaskets. The first clamp body is arranged on the outside of the battery cell, and a gap is arranged between the first clamp body and the battery cell; the first conductive gasket is respectively abutted against the positive electrode of the battery cell and the first top screw, and the first top screw is arranged on the top of the first clamp body; several first side screws are symmetrically arranged on both side surfaces of the first clamp body, the first side screw is abutted against the side of the battery cell through the first side gasket, and the first side screw and the first side gasket are arranged one by one.

2. The battery test fixture according to claim 1, characterized in that: The first clamp body includes a first top panel, a first side panel and a second side panel, the first side panel and the second side panel are symmetrically arranged, and the first top panel is perpendicularly arranged to the first side panel and the second side panel respectively; the first top screw is fixed to the first top panel, and several of the first side screws are symmetrically arranged on the first side panel and the second side panel.

3. The battery test fixture according to claim 2, characterized in that: The first top panel, the first side panel and the second side panel are integrally formed; the first top panel is arranged close to the positive electrode of the battery cell, and the first side panel and the second side panel are arranged on both sides of the battery cell respectively.

4. The battery test fixture according to claim 1, characterized in that: The first clamp unit and the second clamp unit are independent of each other and are symmetrically arranged.

5. The battery test fixture according to claim 3, characterized in that: The second clamp unit includes a second clamp body, a second top screw, a second conductive gasket, several second side screws and several second side gaskets. The second clamp body is arranged on the outside of the battery cell, and a gap is arranged between the second clamp body and the battery cell; the second conductive gasket is respectively abutted against the negative pole of the battery cell and the second top screw, and the second top screw is arranged on the top of the second clamp body; several second side screws are symmetrically arranged on both side surfaces of the second clamp body, the second side screw is abutted against the side of the battery cell through the second side gasket, and the second side screw and the second side gasket are arranged one by one.

6. The battery test fixture according to claim 5, characterized in that: The second clamp body includes a second top panel, a third side panel and a fourth side panel, the third side panel and the fourth side panel are symmetrically arranged, and the second top panel is perpendicularly arranged to the third side panel and the fourth side panel respectively; the second top screw is fixed to the second top panel, and several second side screws are symmetrically arranged on the third side panel and the fourth side panel.

7. The battery test fixture according to claim 6, characterized in that: The second top panel, the third side panel and the fourth side panel are integrally formed; the second top panel is arranged close to the negative electrode of the battery cell, and the third side panel and the fourth side panel are respectively arranged on both sides of the battery cell.

8. The battery test fixture according to claim 7, characterized in that: The first top screw, the first side screws, the second top screw and the second side screws are all fastening screws.

9. The battery test fixture according to claim 7, characterized in that: The plurality of the first side gaskets and the plurality of the second side gaskets are all rubber gaskets.

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