CN220455366U

CN220455366U - Battery test fixture

Info

Publication number: CN220455366U
Application number: CN202321696120.0U
Authority: CN
Inventors: 王超; 林少雄; 刘超辉; 唐铭; 谢文杰; 谢强胜; 王雪友; 陈宇; 李圆圆
Original assignee: Hefei Guoxuan High Tech Power Energy Co Ltd
Current assignee: Hefei Gotion High Tech Power Energy Co Ltd
Priority date: 2023-06-30
Filing date: 2023-06-30
Publication date: 2024-02-06
Anticipated expiration: 2033-06-30

Abstract

The utility model discloses a battery test fixture, which comprises a base, wherein a first clamping plate and a second clamping plate are arranged on the base, the first clamping plate and the second clamping plate are used for clamping a battery, and the distance between the first clamping plate and the second clamping plate is adjustable; the base is also provided with a conductive connecting piece which is used for contacting the lug of the battery; the conductive connecting piece is adjustable in position relative to the first clamping plate and the second clamping plate. According to the battery testing clamp, the structure is simple, the positions of the conductive connecting piece relative to the first clamping plate and the second clamping plate are adjusted, so that the conductive connecting piece is suitable for connection of pole pieces of batteries of different types, the disassembly and the connection are convenient through the arrangement of the clamp, and the detection of the batteries of different types is convenient.

Description

Battery test fixture

Technical Field

The utility model relates to the technical field, in particular to a battery test fixture.

Background

In recent years, portable electronic products, new energy automobiles, smart grids, distributed energy storage, internet of things and the like rapidly develop, and higher requirements are continuously put forward on various performances of lithium ion batteries, wherein the improvement of the energy density of the batteries is urgent. Therefore, the development of lithium ion batteries with high energy density, high safety and long cycle life is a research hotspot in the energy storage field today.

In the formation process of the lithium ion battery, a large amount of active lithium is consumed by the formation of the negative electrode SEI film, so that the first week coulombic efficiency and the battery capacity of the battery are low. Supplementing active lithium is an effective means to solve this problem. The significance of lithium supplement is as follows: the first week reversible capacity of the battery is increased, and the actual battery energy density is increased; the pre-expansion of the volume of the anode material is realized, the cracking and polarization of material particles in the lithium intercalation process are reduced, and the mechanical stability and the circularity of the anode are improved; some lithium supplementing techniques can form artificial SEI films, and thus can replace the formation steps of batteries and the like.

In recent years, researchers have developed various methods of lithium supplementation including in situ doping of pre-lithium, contact pre-lithium, electrochemical pre-lithium, chemical pre-lithium, and other pre-lithium approaches. Among them, the electrochemical prelithiation method is the most direct method for solving the problem of low ICE of lithium ion negative electrode material, and is also the most promising way for realizing commercialization.

At present, in the electrochemical pre-lithium process, in the experimental exploration stage, the pre-lithium process is basically performed on the battery cells with different specifications and models, and no lithium-supplementing product is developed in the market basically. In the pre-lithium test of the battery cells with multiple specifications, a large number of clamps with different specifications are needed, and the clamps are more and are troublesome to assemble and disassemble. Therefore, a fixture which can adapt to different specifications of battery cells and help the pre-lithium battery cells to perform data test is needed.

Disclosure of Invention

In order to solve the technical problems in the background technology, the utility model provides a battery test fixture.

The utility model provides a battery test fixture, which comprises a base, wherein a first clamping plate and a second clamping plate are arranged on the base, the first clamping plate and the second clamping plate are used for clamping a battery, and the distance between the first clamping plate and the second clamping plate is adjustable;

the base is also provided with a conductive connecting piece which is used for contacting the lug of the battery;

the conductive connecting piece is adjustable in position relative to the first clamping plate and the second clamping plate.

The clamp is applied in the electrochemical pre-lithium testing process of the lithium ion battery, the battery is firstly fixed between the first clamping plate and the second clamping plate, then the conductive connecting piece is moved to enable the conductive connecting piece to be in contact with the lug of the battery, a series of data testing such as formation, capacity division and circulation are conducted, the clamping is convenient to fix the batteries of different models by adjusting the distance between the first clamping plate and the second clamping plate, the conductive connecting piece is adjusted to be relative to the first clamping plate and the second clamping plate, the conductive connecting piece is further enabled to adapt to the connection of pole pieces of the batteries of different models, the disassembly and the connection are convenient through the arrangement of the clamp, and the detection of the batteries of different models is convenient.

Preferably, at least one of the vertical position, the lateral position and the longitudinal position of the conductive connecting member on the base is adjustable.

Preferably, the conductive connection is mounted on a moving frame mounted on the base.

Preferably, the position of the movable frame in the vertical direction on the base is adjustable.

Preferably, the device further comprises an adjusting rod, the adjusting rod is mounted on the moving frame, the conductive connecting piece is mounted on the adjusting rod, the longitudinal position of the adjusting rod on the moving frame is adjustable, and the longitudinal direction is the X-axis direction in a three-coordinate system.

Preferably, the conductive connecting piece is transversely and slidably connected to the adjusting rod, so that the connection of batteries of different types is facilitated, and the transverse position is the Y-axis direction position in a three-coordinate system.

Preferably, the lifting mechanism is mounted on the base and used for driving the movable frame to move in the vertical direction.

Preferably, the device further comprises a distance detection member for detecting the height of the movable frame in the vertical direction relative to the first clamping plate or the second clamping plate.

Preferably, the conductive connecting piece is a tab clip.

Preferably, the first clamping plate is fixed on the base, the second clamping plate is transversely and slidably mounted on the base, and the device further comprises a moving mechanism mounted on the base and used for driving the second clamping plate to transversely move on the base.

According to the battery testing clamp, the structure is simple, the positions of the conductive connecting piece relative to the first clamping plate and the second clamping plate are adjusted, so that the conductive connecting piece is suitable for connection of pole pieces of batteries of different types, the disassembly and the connection are convenient through the arrangement of the clamp, and the detection of the batteries of different types is convenient.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

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

FIG. 2 is a schematic view illustrating the mounting of a mobile frame and a base according to some embodiments of the present utility model;

FIG. 3 is a schematic view of a first clamping plate structure according to some embodiments of the utility model;

in the figure: 1. a base; 2. a first clamping plate; 3. a second clamping plate; 4. a conductive connection; 5. a moving rack; 6. a lifting mechanism; 7. an adjusting rod; 8. a limiting plate; 9. and a moving mechanism.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar symbols indicate like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

The battery test fixture shown in fig. 1 comprises a base 1, wherein a first clamping plate 2 and a second clamping plate 3 are arranged on the base 1, the first clamping plate 2 and the second clamping plate 3 are used for clamping a battery, and the distance between the first clamping plate 2 and the second clamping plate 3 is adjustable; the first clamping plate 2 and the second clamping plate 3 are plate-shaped components, and the first clamping plate 2 and the second clamping plate 3 are in surface contact with the battery, so that the stability of fixing the lithium battery is further improved;

the base 1 is also provided with a conductive connecting piece 4, and the conductive connecting piece 4 is used for contacting the lug of the battery;

in this embodiment, the conductive connecting piece 4 is a tab clip, so that it can contact with the battery tab more quickly;

the position of the conductive connection 4 relative to the first clamping plate 2 and the second clamping plate 3 is adjustable, in particular, the position adjustment of the conductive connection 4 relative to the first clamping plate 2 and the second clamping plate 3 can be achieved by means of existing manipulators.

It should be noted that, the material of the base 1 may be stainless steel or other materials; the distance between the first clamping plate 2 and the second clamping plate 3 can be manually adjusted to adapt to lithium batteries of different types;

the fixture is applied in the electrochemical pre-lithium testing process of the lithium ion battery, the battery is firstly fixed between the first clamping plate 2 and the second clamping plate 3, then the conductive connecting piece 4 is moved to enable the conductive connecting piece 4 to be in contact with the lug of the battery, a series of data tests such as formation, capacity division and circulation are then carried out, the clamping is convenient to fix batteries of different types by adjusting the distance between the first clamping plate 2 and the second clamping plate 3, the conductive connecting piece 4 is further enabled to be suitable for connection of pole pieces of the batteries of different types by adjusting the positions of the conductive connecting piece 4 relative to the first clamping plate 2 and the second clamping plate 3, and the disassembly and the connection are convenient through the arrangement of the fixture, and the detection of the batteries of different types is convenient.

In some embodiments, it is preferred that at least one of the vertical, lateral and longitudinal positions of the conductive connector 4 on the base 1 be adjustable to accommodate batteries of different heights and different width models.

As shown in fig. 1, the conductive connector 4 is preferably mounted on a movable frame 5, and the movable frame 5 is mounted on the base 1, thereby facilitating the mounting of the conductive connector 4. Preferably, the position of the movable frame 5 in the vertical direction on the base 1 is adjustable, so that the conductive connecting piece 4 is convenient for connecting the tabs with different heights and simultaneously placing batteries with different types.

As shown in fig. 2, in some embodiments, the lifting mechanism 6 is preferably further included, and the lifting mechanism is mounted on the base 1 and is used for driving the moving frame 5 to move in a vertical direction, and the lifting mechanism 6 can be an electric cylinder, an air cylinder or a screw rod sliding block mechanism in the prior art, and in this embodiment, the lifting mechanism 6 is an electric cylinder;

the device also comprises a distance detection piece, wherein the distance detection piece is used for detecting the height of the movable frame 5 in the vertical direction relative to the first clamping plate 2 or the second clamping plate 3; the distance detecting member is a distance sensor mounted on the bottom surface of the moving frame 5 to detect the distance from the bottom surface of the moving frame 5 to the upper surface of the base 1 (it will be understood by those skilled in the art that the upper surface of the base 1 is the surface of the base 1 on which the battery is placed).

Preferably, the battery charging device further comprises an adjusting rod 7, the adjusting rod 7 is arranged on the moving frame 5, the conductive connecting piece 4 is arranged on the adjusting rod 7, the longitudinal position of the adjusting rod 7 on the moving frame 5 is adjustable, specifically, the adjusting rod 7 is longitudinally slidably arranged on the moving frame 5, the longitudinal position of the adjusting rod 7 on the moving frame 5 is adjustable, the adjusting rod 7 can be fixed through parts such as fixing pins or fixing screws in the prior art, and then batteries of different types are adapted, the adjusting rod 7 is provided with two groups of adjusting rods 7 which are arranged in parallel, each adjusting rod 7 is provided with the conductive connecting piece 4, and then the positive pole piece and the negative pole piece of the battery are contacted.

Preferably, in some embodiments, the conductive connector 4 is mounted on the adjustment rod 7 in a laterally sliding manner, thereby facilitating connection to different types of batteries.

Preferably, the first clamping plate 2 is fixed on the base 1, the second clamping plate 3 is transversely slidably mounted on the base 1, and the device further comprises a moving mechanism 9, wherein the moving mechanism 9 is mounted on the base 1 and is used for driving the second clamping plate 3 to transversely move on the base 1, and the moving mechanism 9 is an electric cylinder, an air cylinder or other structures capable of driving components to horizontally move in the prior art, and in this embodiment, the moving mechanism 9 is an electric cylinder.

As shown in fig. 3, in some embodiments, it is preferable that the first clamping plate 2 is provided with a limiting plate 8, and the limiting plate 8 is located between the first clamping plate 2 and the second clamping plate 3 and is used for abutting and limiting one side surface of the battery, preferably, the longitudinal position of the limiting plate 8 on the first clamping plate 2 is adjustable, the side surface of the battery is further convenient to fix, the limiting plate 8 can be slidably mounted on the first baffle, and the limiting plate 8 can be fixed on the first clamping plate 2 through fixing pins in the prior art.

It is to be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counter-clockwise," "axial," "radial," "circumferential," and the like are directional or positional relationships as indicated based on the drawings, merely to facilitate describing the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the utility model.

Furthermore, the terms "first," "second," 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. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

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

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The battery test fixture comprises a base (1), wherein a first clamping plate (2) and a second clamping plate (3) are arranged on the base (1), and the first clamping plate (2) and the second clamping plate (3) are used for clamping a battery, and are characterized in that the distance between the first clamping plate (2) and the second clamping plate (3) is adjustable;

the base (1) is also provided with a conductive connecting piece (4), and the conductive connecting piece (4) is used for contacting with the lug of the battery;

the position of the conductive connecting piece (4) relative to the first clamping plate (2) and the second clamping plate (3) is adjustable.

2. The battery test fixture according to claim 1, wherein at least one of the vertical, lateral and longitudinal positions of the conductive connection member (4) on the base (1) is adjustable.

3. The battery test fixture according to claim 1, characterized in that the conductive connection (4) is mounted on a mobile frame (5), the mobile frame (5) being mounted on the base (1).

4. A battery test fixture according to claim 3, characterized in that the position of the mobile frame (5) on the base (1) in the vertical direction is adjustable.

5. The battery test fixture according to any one of claims 3-4, further comprising an adjustment lever (7), said adjustment lever (7) being mounted on said mobile frame (5), said conductive connection (4) being mounted on said adjustment lever (7), the longitudinal position of said adjustment lever (7) on said mobile frame (5) being adjustable.

6. The battery test fixture according to claim 4, further comprising a lifting mechanism (6), the lifting mechanism (6) being mounted on the base (1) and being adapted to drive the mobile frame (5) to move in a vertical direction.

7. The battery test fixture according to claim 6, further comprising a distance detecting member for detecting a height of the movable frame (5) in a vertical direction with respect to the first clamping plate (2) or the second clamping plate (3).

8. The battery test fixture according to claim 1, wherein the conductive connection member (4) is a tab clip.

9. The battery test fixture according to claim 1, wherein the first clamping plate (2) is fixed on the base (1), the second clamping plate (3) is transversely slidably mounted on the base (1), and further comprising a moving mechanism (9), the moving mechanism (9) being mounted on the base (1) and being used for driving the second clamping plate (3) to transversely move on the base (1).