Device for testing battery cell

Abstract

The utility model relates to the technical field of lithium batteries, in particular to a device for testing a battery cell. Comprising two connecting columns and further comprises a cover plate body, and the two connecting columns are arranged on the cover plate body in a spaced mode. The two protective devices are detachably connected with the connecting columns respectively, and after the protective devices are installed on the connecting columns, the protective devices are used for fixing test equipment connectors to the connecting columns and can prevent personnel from touching the connecting columns or the test equipment connectors connected with the connecting columns. The connecting column is directly arranged on the cover plate body, the problems that the connecting column falls off and the testing difference is large in the testing process are effectively solved, the protection device is arranged, the testing equipment connector is fixed to the connecting column, and people can be prevented from touching the connecting column or the testing equipment connector connected with the connecting column.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a device for testing battery cells. Background Art

[0002] In order to test the long-term performance (normal temperature cycle, high temperature cycle) and short-term performance (rate performance, low temperature performance, high temperature performance, SOC-DCR, room temperature discharge) of single battery cells, it is necessary to weld connecting posts on the two poles of the battery cells (a connecting rod is provided on the gasket, and the gasket is welded to the pole) to facilitate connection with the connector of the test device. However, in order not to damage the battery cells, the welding of such connecting posts has high welding requirements and is prone to cold welding, which makes the risk of the connecting posts falling off during the test. In addition, the connecting pieces are unstable and prone to cold welding, explosion welding and falling off, etc., resulting in large test differences. At the same time, this connection method is easily touched by personnel after connection, which has shortcomings. Utility Model Content

[0003] The utility model aims to at least improve one of the technical problems existing in the prior art. To this end, the utility model proposes a device for testing a battery cell.

[0004] The device for testing a battery cell according to the first embodiment of the utility model includes two connecting posts and further includes:

[0005] The cover plate body is provided with two connecting posts spaced apart from each other.

[0006] Two protective devices are detachably connected to one of the connecting columns respectively. After being installed on the connecting column, the protective devices are used to fix the test equipment connector on the connecting column and prevent people from touching the connecting column or the test equipment connector connected to the connecting column.

[0007] According to the device for testing battery cells in the embodiment of the utility model, the connecting posts are directly arranged on the cover plate body, thereby effectively solving the problems of connecting posts falling off and large test differences during testing. By arranging a protective device, the test equipment connector is fixed on the connecting post and personnel are prevented from touching the connecting post or the test equipment connector connected to the connecting post.

[0008] In a possible implementation of the first aspect, the protective device includes two clamping plates, a protective box and a clamping device, the clamping plate is rotatably arranged on one side of the bottom of the protective box, two through grooves are respectively provided on both sides of the protective box, and the clamping device is arranged in the protective box for fixing the test equipment connector on the connecting column.

[0009] In a possible implementation of the first aspect, a T-shaped rotating rod is provided on the card plate, the rotating rod is rotatably connected to the bottom of the protection box, and one end of the T-shaped rotating rod is rotatably connected to the bottom of the protection box.

[0010] In a possible implementation of the first aspect, the clamping device includes a pressure rod with a T-shaped end, an outer tube and an elastic member, a socket is provided at the bottom of the pressure rod, the top of the pressure rod is slidably connected to the outer tube, the elastic member is arranged in the outer tube, and the socket on the pressure rod is sleeved on the connecting column. The protective box is pressed downward to squeeze one end of the pressure rod to squeeze the elastic member, and then the two clamping plates are rotated to make them contact with the connecting column, and the protective box is released. The elastic member gives a reaction force to one end of the pressure rod, so that the clamping plate is tightly clamped on the bottom of the connecting column.

[0011] In a possible implementation manner of the first aspect, the opening of the jack is chamfered to be in a trumpet shape, so as to facilitate the insertion of the connecting column into the jack.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments 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 these drawings without creative work.

[0014] Figure 1 It is a structural schematic diagram according to an embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of the connection between the connecting column and the cover plate body according to an embodiment of the utility model;

[0016] Figure 3 It is a cross-sectional view of a protective device according to an embodiment of the utility model.

[0017] Reference numerals:

[0018] Connecting column 10;

[0019] Cover plate body 2;

[0020] Card plate 3, rotating rod 301;

[0021] Protection box 4, through slot 401;

[0022] Pressure rod 5, jack 501;

[0023] Outer tube 6;

[0024] Elastic member 7. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0026] It should be noted that when an element is referred to as being "fixed to" 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.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] The terms "first", "second", "third", etc. in the specification and claims of the present application and the drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a series of steps or units are included, or optionally, steps or units not listed are included, or optionally, other steps or units inherent to these processes, methods, products or devices are included.

[0029] Only the part relevant to the present application but not all content is shown in the accompanying drawings.Before discussing exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processing or methods described as flow charts.Although the flow chart describes each operation or step as sequential processing, many operations therein can be implemented in parallel, concurrently or simultaneously.In addition, the order of each operation can be rearranged.Described processing can be terminated when its operation is completed, but can also have additional steps not included in the accompanying drawings.Described processing can correspond to method, function, procedure, subroutine, subprogram etc.

[0030] As used in this specification, the terms "component", "module", "system", "unit", etc. are used to refer to computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a unit can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, and / or distributed between two or more computers. In addition, these units can be executed from various computer-readable media having various data structures stored thereon. A unit can, for example, be based on a second unit data having one or more data packets, such as from another unit interacting with a local system, a distributed system, and / or a network. For example, signals of the Internet interacting with other systems communicate through local and / or remote processes.

[0031] Example 1

[0032] See also Figures 1 to 3 As shown, this embodiment provides a device for testing a battery cell, comprising two connecting posts 10, characterized in that it also includes:

[0033] The cover plate body 2 , the two connecting columns 10 are arranged on the cover plate body 2 at intervals.

[0034] Two protective devices are detachably connected to one of the connecting columns 10 respectively. After being installed on the connecting column 10, the protective devices are used to fix the test equipment connector on the connecting column 10 and prevent people from touching the connecting column 10 or the test equipment connector connected to the connecting column 10.

[0035] Two connecting posts 10 are directly arranged on the cover plate body 2. When producing the battery cell in the experimental stage, the cover plate is welded to the battery cell so that the connecting posts 10 are in contact with the poles on the battery cell, instead of directly welding the connecting posts 10 to the poles on the battery cell. This effectively solves the problem of the connecting posts 10 falling off and the large test difference during the test. By setting a protective device, the test equipment connector is fixed on the connecting post 10 and can prevent people from touching the connecting post 10 or the test equipment connector connected to the connecting post 10. By setting the connecting post 10 directly on the cover plate body 2, the problem of the connecting post 10 falling off and the large test difference during the test is effectively solved. By setting a protective device, the test equipment connector is fixed on the connecting post 10 and can prevent people from touching the connecting post 10 or the test equipment connector connected to the connecting post 10. Specifically, the connecting post 10 is T-shaped, which is composed of a gasket and a connecting rod.

[0036] It should be noted that the protective device includes two clamping plates 3, a protective box 4 and a clamping device. The clamping plates 3 are rotatably arranged on one side of the bottom of the protective box 4. Two through grooves 401 are respectively provided on both sides of the protective box 4. The clamping device is arranged in the protective box 4 to fix the test equipment connector on the connecting column 10. The test equipment connector passes through the through groove 401 and is sleeved on the connecting column 10. When the protective box 4 is installed, the clamping device abuts against the test equipment connector to fix the test equipment connector on the connecting column 10 to prevent it from moving. The two clamping plates 3 are rotated, and one end of the clamping plate 3 abuts against the connecting column 10, thereby installing the protective box 4 on the connecting column 10.

[0037] It should be noted that the card plate 3 is provided with a T-shaped rotating rod 301, the rotating rod 301 is rotatably connected to the bottom of the protection box 4, and one end of the T-shaped rotating rod 301 is rotatably connected to the bottom of the protection box 4. Specifically, the card plate 3 is a rectangular card plate.

[0038] It should be noted that the clamping device includes a pressure rod 5 with a T-shaped end, an outer tube 6 and an elastic member 7. A socket 501 is provided at the bottom of the pressure rod 5. The top of the pressure rod 5 is slidably connected to the outer tube 6. The elastic member 7 is arranged in the outer tube 6. The socket 501 on the pressure rod 5 is sleeved on the connecting column 10. The protective box 4 is pressed downward so that one end of the pressure rod 5 squeezes the elastic member 7. Then the two clamping plates 3 at the bottom of the protective box 4 are manually rotated so that one end of the clamping plate 3 extends under the connecting column 10. The protective box 4 is released, and the elastic member 7 gives a reaction force to one end of the pressure rod 5, so that the clamping plate 3 is tightly clamped on the bottom of the connecting column 10.

[0039] It should be noted that the opening of the insertion hole 501 is chamfered to be in a trumpet shape, so as to facilitate the connection column 10 to be inserted into the insertion hole 501 .

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the invention.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" 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 expressions of the above terms do not necessarily refer to the same embodiment or example.

[0042] Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Mentioning "embodiment" in this article means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present embodiment application. The appearance of this phrase in various positions in the specification is not necessarily the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It can be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0043] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A device for testing a battery cell, comprising two connecting posts (10), characterized in that: Also includes: A cover plate body (2), wherein the two connecting columns (10) are arranged on the cover plate body (2) at intervals; Two protective devices are respectively detachably connected to one of the connecting columns (10); after being installed on the connecting column (10), the protective devices are used to fix the test equipment connector on the connecting column (10) and can prevent people from touching the connecting column (10) or the test equipment connector connected to the connecting column (10).

2. The battery cell testing device according to claim 1, characterized in that: The protective device comprises two clamping plates (3), a protective box (4) and a clamping device, wherein the clamping plates (3) are rotatably arranged on one side of the bottom of the protective box (4), two through grooves (401) are respectively arranged on both sides of the protective box (4), and the clamping device is arranged in the protective box (4) for fixing the connector of the test equipment on the connecting column (10).

3. The device for testing a battery cell according to claim 2, characterized in that: The clamping plate (3) is provided with a T-shaped rotating rod (301), and the rotating rod (301) is rotatably connected to the bottom of the protection box (4).

4. The battery cell testing device according to claim 2, characterized in that: The pressing device comprises a pressing rod (5) with a T-shaped end, an outer tube (6) and an elastic member (7); a plug hole (501) is provided at the bottom of the pressing rod (5); the top of the pressing rod (5) is slidably connected to the outer tube (6); and the elastic member (7) is arranged inside the outer tube (6).

5. The device for testing a battery cell according to claim 4, characterized in that: The opening of the insertion hole (501) is chamfered to be in a trumpet shape.

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