CN219348949U

CN219348949U - Battery test fixture

Info

Publication number: CN219348949U
Application number: CN202320638867.4U
Authority: CN
Inventors: 操佳华; 鲁俊文; 阚光伟; 李武义; 陶国柱
Original assignee: Sunwoda Electric Vehicle Battery Co Ltd
Current assignee: Xinwangda Power Technology Co ltd
Priority date: 2023-03-15
Filing date: 2023-03-15
Publication date: 2023-07-14
Anticipated expiration: 2033-03-15

Abstract

The utility model relates to the technical field of battery detection and discloses a battery test fixture which comprises a substrate, an adjusting component and a detecting component; the adjusting component comprises an adjusting rod, a limiting block and a locking block; the adjusting rod is connected with the base plate, and the limiting block and the locking block are arranged at intervals along the adjusting rod; the detection component comprises a movable plate, a top pressing plate and a detection piece; the top pressing plate is arranged on one side of the movable plate, which is far away from the base plate, the movable plate and the top pressing plate are both arranged on the adjusting rod in a sliding way, and the detection piece is arranged between the movable plate and the top pressing plate; the stopper sets up in the movable plate one side that deviates from the top board, and the latch segment sets up in the one side that the top board deviates from the movable plate. The movable plate is limited by the limiting block, so that the battery is prevented from deforming due to pretightening force before testing, the accuracy of battery detection is improved, the stress of the movable plate is detected by the detecting piece, the expansion condition of the battery in the charge and discharge testing process is predicted, and the accuracy of battery service life prediction is further improved.

Description

Battery test fixture

Technical Field

The utility model relates to the technical field of battery detection, in particular to a battery test clamp.

Background

In the design of the power battery, the service life of the battery needs to be predicted, so that the real stress condition of the power battery in the use process needs to be simulated, and the accuracy of the service life prediction of the power battery is improved. The stress of the power battery in the actual use process is mainly caused by the fact that the power battery expands in the charging and discharging process, and the expanded battery is extruded with the shell, so that the stress of the battery is caused.

The existing test fixture is used for simulating the stress condition by clamping the battery through the two clamping plates, the battery can be subjected to pretightening force from the two clamping plates, and the pretightening force can cause the battery to generate certain deformation, so that the accuracy of the test is affected.

Disclosure of Invention

The utility model aims to solve the technical problems that:

the pretightening force causes the battery to deform, and the accuracy of the test is affected.

In order to solve the above technical problems, the present utility model provides a battery test fixture, including:

a substrate;

the adjusting assembly comprises an adjusting rod, a limiting block connected with the adjusting rod and a locking block connected with the adjusting rod; the adjusting rod is connected with the base plate, and the limiting block and the locking block are arranged at intervals along the adjusting rod; a kind of electronic device with high-pressure air-conditioning system

The detection assembly comprises a movable plate, a top pressing plate and a detection piece; the top pressing plate is arranged on one side, far away from the base plate, of the movable plate, the movable plate and the top pressing plate are both arranged on the adjusting rod in a sliding mode, the detection piece is arranged between the movable plate and the top pressing plate, the movable plate and the top pressing plate are clamped and fixed with the detection piece, and the detection piece is used for detecting pressure between the movable plate and the top pressing plate; the limiting block is arranged on one side of the movable plate, which is away from the top pressing plate, and the locking block is arranged on one side of the top pressing plate, which is away from the movable plate;

the battery to be tested is placed between the base plate and the movable plate.

In one embodiment, the limiting block and the locking block are both in threaded connection with the adjusting rod.

In one embodiment, the number of the adjusting assemblies is at least two, and at least two adjusting assemblies are arranged at intervals along the edge of the substrate.

In one embodiment, the extending directions of the adjusting rods of any two adjusting assemblies are parallel.

In one embodiment, the movable plate is parallel to the base plate, and the top pressure plate is parallel to the movable plate.

In one embodiment, a positioning groove is formed in one side, close to the movable plate, of the top pressing plate, and the detection piece is embedded in the positioning groove.

In one embodiment, the movable plate is rectangular and straight, and the detecting piece is arranged at the center of the movable plate.

In one embodiment, the battery test fixture further comprises a centering assembly; the centering component comprises a supporting seat and a fixing piece; the support seat is arranged on the substrate, the support seat slides from any side of the substrate to the center direction of the substrate and along the extension plane where the substrate is located, and the fixing piece is arranged on the support seat and used for limiting the support seat to slide on the substrate.

In one embodiment, the support base includes a support portion and a connection portion; the supporting part is arranged on one side of the substrate, close to the detection assembly, and is perpendicular to the substrate, and the connecting part penetrates through the substrate; the fixing piece is in threaded connection with the connecting portion, and the fixing piece and the supporting portion are clamped and fixed on the substrate.

In one embodiment, the substrate is provided with a bar-shaped hole, and the engagement part passes through the bar-shaped hole;

the number of the connecting parts is at least two, the number of the strip-shaped holes is the same as that of the connecting parts, and the connecting parts are arranged in one-to-one correspondence with the strip-shaped holes.

Compared with the prior art, the battery test fixture has the beneficial effects that:

the movable plate and the base plate simulate the real stress condition of the battery, the movable plate is limited by the limiting block, the battery is prevented from being deformed due to pretightening force before testing, the accuracy of battery detection is improved, the stress of the movable plate is detected by the detecting piece, the expansion condition of the battery in the charging and discharging testing process is predicted, and the accuracy of battery service life prediction is further improved.

Drawings

FIG. 1 is a schematic view of a battery test fixture according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the battery test fixture of FIG. 1 at another angle;

FIG. 3 is an exploded view of the battery test fixture of FIG. 1;

FIG. 4 is a schematic cross-sectional view of the battery test fixture of FIG. 1;

fig. 5 is an enlarged schematic view of a portion of circle a in fig. 4.

The meaning of the reference numerals in the drawings are:

100. a battery test fixture;

10. a substrate; 15. a bar-shaped hole;

20. an adjustment assembly; 21. an adjusting rod; 22. a limiting block; 23. a locking block;

30. a detection assembly; 31. a movable plate; 32. a top pressing plate; 33. a detecting member; 35. a positioning groove;

40. centering components; 41. a support base; 411. a support part; 412. a joint portion; 42. a fixing member;

90. and a battery.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations 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 device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present 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; can be mechanically or electrically connected; 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.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1 to 5, a battery testing fixture 100 according to an embodiment of the utility model includes a substrate 10, an adjusting assembly 20 connected to the substrate 10, and a detecting assembly 30 connected to the adjusting assembly 20. The adjusting component 20 comprises an adjusting rod 21, a limiting block 22 connected with the adjusting rod 21 and a locking block 23 connected with the adjusting rod 21; the adjusting rod 21 is connected with the base plate 10, and the limiting block 22 and the locking block 23 are arranged at intervals along the adjusting rod 21. The detecting assembly 30 includes a movable plate 31, a pressing plate 32 and a detecting member 33; the top pressing plate 32 is arranged on one side of the movable plate 31 far away from the base plate 10, the movable plate 31 and the top pressing plate 32 are both arranged on the adjusting rod 21 in a sliding way, and a battery 90 to be tested is placed between the movable plate 31 and the base plate 10 so as to simulate the stress condition of the battery 90 in the actual use process; the detecting piece 33 is arranged between the movable plate 31 and the top pressing plate 32, the movable plate 31 and the top pressing plate 32 clamp and fix the detecting piece 33, the detecting piece 33 is used for detecting the pressure between the movable plate 31 and the top pressing plate 32, and further the pressure exerted on the movable plate 31 due to the expansion of the battery 90 is obtained, so that the accuracy of predicting the service life of the battery 90 is improved; the stopper 22 sets up in the movable plate 31 one side that deviates from top pressure board 32, and the latch segment 23 sets up in the one side that top pressure board 32 deviates from movable plate 31, and stopper 22 is used for spacing the setting position of movable plate 31, avoids exerting the pretightning force to battery 90 before the experiment, and then avoids battery 90 to appear deformation because of the atress before the experiment, improves the accuracy of test.

Above-mentioned battery test fixture 100 simulates the true stress condition of battery 90 through fly leaf 31 and base plate 10, carries out spacingly through stopper 22 to fly leaf 31, avoids battery 90 to warp because of receiving the pretightning force before the test, and then improves the accuracy to battery 90 detects to detect the atress of fly leaf 31 through setting up detection piece 33, predict the expansion condition of battery 90 in the charge-discharge test in-process, further improve the accuracy to battery 90 life prediction.

Further, the substrate 10 is provided in a straight plate-like structure, and the substrate 10 abuts against one side of the battery 90. It will be appreciated that the shape of the substrate 10 is one of circular, triangular, rectangular, pentagonal, hexagonal; in the present embodiment, the substrate 10 is rectangular in shape.

Further, the number of the adjusting assemblies 20 is at least two, and at least two adjusting assemblies 20 are spaced along the edge of the substrate 10. In the present embodiment, the number of the adjustment assemblies 20 is four, and the four adjustment assemblies 20 are respectively disposed at four corner positions of the rectangular substrate 10.

Further, the adjusting rod 21 is provided in a cylindrical structure, the adjusting rod 21 is provided on one side of the substrate 10, the adjusting rod 21 is perpendicular to the substrate 10, and the extending directions of the adjusting rods 21 of any two adjusting assemblies 20 are parallel. The limiting block 22 is arranged on one side of the locking block 23, which is close to the base plate 10, the limiting block 22 and the locking block 23 are sleeved on the outer side of the adjusting rod 21 and are in threaded connection with the adjusting rod 21, and the positions of the limiting block 22 and the locking block 23 on the adjusting rod 21 can be adjusted by rotating the limiting block 22 and the locking block 23. In this embodiment, the limiting block 22 and the locking block 23 are nuts, and the adjusting rod 21 is a screw.

Further, the detecting assembly 30 is installed between the stopper 22 and the locking block 23. The movable plate 31 is arranged in a straight plate structure, the movable plate 31 is parallel to the base plate 10, and the movable plate 31 is arranged on one side of the top pressing plate 32 close to the base plate 10; the pressing plate 32 is in a straight plate structure, the pressing plate 32 is parallel to the movable plate 31, and the adjusting rods 21 of the adjusting assemblies 20 sequentially pass through the movable plate 31 and the pressing plate 32. It will be appreciated that the movable plate 31 has one of a circular shape, a triangular shape, a rectangular shape, a pentagonal shape, and a hexagonal shape; the top pressure plate 32 has one of a circular shape, a triangular shape, a rectangular shape, a pentagonal shape, and a hexagonal shape. In the present embodiment, the movable plate 31 has a rectangular shape; the top pressure plate 32 is rectangular in shape.

Further, the detecting member 33 is disposed between the movable plate 31 and the pressing plate 32, the detecting member 33 is disposed at a central position of the movable plate 31, the detecting member 33 is used for detecting a relative pressure between the movable plate 31 and the pressing plate 32, and the advantage of disposing the detecting member 33 at the central position of the movable plate 31 is that the movable plate 31 receives a reaction force applied by the detecting member 33 while the movable plate 31 presses the detecting member 33 due to the mutual force, and the reaction force is applied at the central position of the movable plate 31, so that the movable plate 31 is prevented from generating a torque due to the eccentric force, and further the movable plate 31 is prevented from being deformed due to the torque, thereby improving the accuracy of the detection. In the present embodiment, the detecting member 33 is a pressure sensor; the side of the top pressing plate 32, which is close to the movable plate 31, is provided with a positioning groove 35, the positioning groove 35 is in a groove shape, the shape of the positioning groove 35 is the same as that of the detecting piece 33, and the detecting piece 33 is embedded in the positioning groove 35 to position the mounting position of the detecting piece 33 during mounting and prevent the detecting piece 33 from moving.

Further, the battery test fixture 100 further includes a centering assembly 40, the centering assembly 40 for centering the battery 90 to dispose the battery 90 at the center position of the movable plate 31. The centering assembly 40 includes a support 41 and a fixture 42. The support seat 41 is arranged on the base plate 10, the support seat 41 slides from any side of the base plate 10 to the central direction of the base plate 10 and along the extension plane of the base plate 10, the support seat 41 is abutted against the battery 90, so that the battery 90 is supported at the central position of the movable plate 31 through the sliding of the support seat 41; the fixing member 42 is disposed on the support base 41, and is used for restricting the support base 41 from sliding on the substrate 10, so as to fix the support base 41 at a specified position on the substrate 10.

Further, the supporting seat 41 includes a supporting portion 411 and an engaging portion 412. The supporting part 411 is arranged at one side of the substrate 10 close to the detection assembly 30, the supporting part 411 is in a straight plate shape, the supporting part 411 is perpendicular to the substrate 10, and the supporting part 411 is used for abutting against the battery 90; the connecting portion 412 is in a cylindrical structure, or a square structure such as a cuboid, a cube, etc., one end of the connecting portion 412 is connected to the supporting portion 411, and the connecting portion 412 penetrates through the substrate 10. The fixing member 42 is sleeved outside the engagement portion 412, the fixing member 42 is screwed with the engagement portion 412, and the fixing member 42 and the supporting portion 411 are clamped and fixed on the substrate 10. In this embodiment, the substrate 10 is provided with a bar-shaped hole 15, the bar-shaped hole 15 is in a long strip shape, and the connection portion 412 passes through the bar-shaped hole 15; the number of the connection portions 412 is at least two, the number of the bar-shaped holes 15 is the same as the number of the connection portions 412, and the connection portions 412 are arranged in one-to-one correspondence with the bar-shaped holes 15 to improve the connection stability between the support base 41 and the substrate 10.

The working process of the utility model is as follows: before testing, the minimum distance between the movable plate 31 and the base plate 10 is adjusted through the limiting block 22, so that the minimum distance between the movable plate 31 and the base plate 10 is ensured to be larger than the width of the battery 90, and the battery 90 is prevented from being deformed due to pretightening force before testing; then the distance between the top pressing plate 32 and the movable plate 31 is adjusted through the locking block 23, the detection piece 33 is clamped and fixed between the movable plate 31 and the top pressing plate 32, and an initial pressure can be applied to the detection piece 33; the battery 90 is then placed between the movable plate 31 and the substrate 10, the bottom of the battery 90 is abutted against the support seat 41, the battery 90 is adjusted to the center position of the movable plate 31 by sliding the support seat 41 relative to the substrate 10, and the support seat 41 is fixed on the substrate 10 by the fixing member 42. After the preparation work before the test is finished, the battery 90 can be repeatedly charged and discharged, the battery 90 expands in the test process, the expanded battery 90 can apply pressure to the movable plate 31 towards the top pressing plate 32, the detecting piece 33 is further pressed, the pressure reading of the detecting piece 33 is changed, the pressure value generated by the expansion of the battery 90 can be obtained by subtracting the initial value from the pressure reading of the detecting piece 33, and meanwhile, the related indexes of repeated charging and discharging are recorded, so that the service life of the battery 90 is predicted.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. A battery test fixture (100), comprising:

a substrate (10);

the adjusting assembly (20) comprises an adjusting rod (21), a limiting block (22) connected with the adjusting rod (21) and a locking block (23) connected with the adjusting rod (21); the adjusting rod (21) is connected with the base plate (10), and the limiting block (22) and the locking block (23) are arranged at intervals along the adjusting rod (21); a kind of electronic device with high-pressure air-conditioning system

The detecting assembly (30), the detecting assembly (30) comprises a movable plate (31), a pressing plate (32) and a detecting piece (33); the pressing plate (32) is arranged on one side, far away from the base plate (10), of the movable plate (31), the movable plate (31) and the pressing plate (32) are both arranged on the adjusting rod (21) in a sliding mode, the detection piece (33) is arranged between the movable plate (31) and the pressing plate (32), the movable plate (31) and the pressing plate (32) clamp and fix the detection piece (33), and the detection piece (33) is used for detecting the pressure between the movable plate (31) and the pressing plate (32); the limiting block (22) is arranged on one side of the movable plate (31) away from the top pressing plate (32), and the locking block (23) is arranged on one side of the top pressing plate (32) away from the movable plate (31);

wherein, the battery to be tested is placed between the base plate (10) and the movable plate (31).

2. The battery test fixture (100) of claim 1, wherein the stopper (22) and the locking block (23) are both threadedly connected to the adjustment rod (21).

3. The battery test fixture (100) of claim 1, wherein the number of adjustment assemblies (20) is at least two, the at least two adjustment assemblies (20) being spaced along an edge of the substrate (10).

4. A battery test fixture (100) according to claim 3, wherein the extension direction of the adjustment bars (21) of any two of the adjustment assemblies (20) is parallel.

5. The battery test fixture (100) of claim 1, wherein the movable plate (31) is parallel to the base plate (10) and the top pressure plate (32) is parallel to the movable plate (31).

6. The battery test fixture (100) according to claim 1, wherein a positioning groove (35) is formed in a side of the pressing plate (32) close to the movable plate (31), and the detecting member (33) is embedded in the positioning groove (35).

7. The battery test fixture (100) according to claim 1, wherein the movable plate (31) has a rectangular straight plate shape, and the detecting member (33) is provided at a center position of the movable plate (31).

8. The battery test fixture (100) of any of claims 1 to 7, wherein the battery test fixture (100) further comprises a centering assembly (40); the centering assembly (40) comprises a supporting seat (41) and a fixing piece (42); the support seat (41) is arranged on the base plate (10), the support seat (41) slides from any one side of the base plate (10) to the central direction of the base plate (10) and along the extending plane where the base plate (10) is arranged, and the fixing piece (42) is arranged on the support seat (41) and used for limiting the support seat (41) to slide on the base plate (10).

9. The battery test fixture (100) of claim 8, wherein the support base (41) comprises a support portion (411) and an engagement portion (412); the supporting part (411) is arranged on one side of the substrate (10) close to the detection assembly (30), the supporting part (411) is perpendicular to the substrate (10), and the connecting part (412) penetrates through the substrate (10); the fixing piece (42) is in threaded connection with the connecting portion (412), and the fixing piece (42) and the supporting portion (411) are clamped and fixed on the substrate (10).

10. The battery test fixture (100) of claim 9, wherein the base plate (10) is provided with a bar-shaped hole (15), the engagement portion (412) passing through the bar-shaped hole (15);

the number of the connecting portions (412) is at least two, the number of the bar-shaped holes (15) is the same as the number of the connecting portions (412), and the connecting portions (412) are arranged in one-to-one correspondence with the bar-shaped holes (15).