Battery test fixture

Abstract

The utility model discloses a battery test fixture, which comprises a lower bottom plate, side plates, a clamping assembly and a connecting plate, wherein the shape of the lower bottom plate is the same as that of a test equipment positioning groove; the side plates are arranged on two sides of the lower bottom plate; the clamping assembly is arranged between the two side plates; the clamping assembly is provided with a battery cavity, a to-be-detected battery is inserted into the battery cavity, the connecting plate abuts against a lower end pole of the to-be-detected battery, the connecting plate is made of a conductive material, and the connecting plate is connected with the detection probe. According to the utility model, the problem that the existing test equipment cannot be suitable for the clamping test of the square battery of which the poles are positioned on the two sides of the battery is solved, and the test range of the test equipment is expanded.

Description

Technical Field

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

[0002] A prismatic battery is a lithium-ion battery with a square shape, as opposed to cylindrical and button-type lithium batteries. The placement of the poles in a prismatic battery is usually closely related to the design, size, and usage requirements of the battery. Prismatic batteries can be divided into the following types according to the pole placement: 1. Located on the same side of the battery: The positive and negative poles are usually located on the same side of the battery. This design facilitates the connection of the battery with the external circuit, especially when multiple batteries need to be connected in parallel or in series. For example, in a prismatic single-cell battery structure, the positive and negative poles may be located on one long side of the battery body, which can simplify the structure of the battery pack and reduce the overall weight. 2. Located at both ends of the battery: Some prismatic batteries use a two-end terminal ear design. This means that the positive and negative poles are located at the two ends of the battery, respectively. This design helps optimize the current distribution inside the battery and improve the performance of the battery. In this design, the poles may be perpendicular to the large surface of the battery and located at both ends, which is convenient for connection with other devices.

[0003] The existing battery testing device includes a fixed detection probe and a fixture positioning groove arranged below the detection probe. After the test fixture clamps the battery to be tested and places it into the fixture positioning groove, the upper pole of the battery to be tested can be brought into contact with the detection probe, thereby testing the battery to be tested. This structure can test the battery to be tested with the positive and negative poles located on the same side, but for the battery to be tested with the positive and negative poles located at both ends of the battery, since there are injection holes on the side of the poles of the battery to be tested, the injection holes must be compressed and sealed to draw negative pressure, so the battery to be tested cannot be laid down for testing, resulting in the detection probe being able to connect to the pole at one end, thereby being unable to perform subsequent detection steps, making the existing test fixture unsuitable for clamping tests of square batteries with poles located on both sides of the battery.

[0004] The utility model patent with application number CN201721089970.9 discloses a battery testing fixture, including: a base plate; a column fixed on the base plate; a fixed assembly, which can move up and down relative to the column and can be fixed to the column via a connector, and is used to compress the battery located on the base plate and electrically connect to the battery. By setting the fixed assembly to be slidable relative to the column and to be fixed to the column, it can adapt to different battery sizes and is more flexible in application. However, the device places the battery to be tested on the base plate, and the battery poles can be placed upwards to contact the fixed assembly. This structure is not suitable for clamping tests of square batteries with poles on both sides of the battery. Utility Model Content

[0005] The utility model aims to provide a battery testing fixture, which solves the problem that the existing testing equipment cannot be applied to the clamping test of square batteries with poles located on both sides of the battery, and expands the testing range of the testing equipment.

[0006] The utility model adopts a technical solution to solve its technical problem, which is to propose a battery testing fixture, including a lower base plate with the same shape as the positioning groove of the testing equipment, side plates arranged on both sides of the lower base plate, a clamping assembly arranged between the two side plates, and a connecting plate arranged between the clamping assembly and the lower base plate; the clamping assembly is provided with a battery cavity, the battery to be tested is inserted into the battery cavity, the connecting plate is abutted against the lower end pole of the battery to be tested, the connecting plate is made of conductive material, and the connecting plate is connected to the detection probe.

[0007] In an embodiment of the present application, the clamping assembly includes a first clamping unit and a second clamping unit arranged between the two side plates; the first clamping unit and the second clamping unit are fixedly connected, and the first clamping unit and the second clamping unit are connected at the sides to form the battery cavity.

[0008] In an embodiment of the present application, the first clamping unit includes a first clamping plate and a second clamping plate which are parallel to each other; the first clamping plate is slidably connected to the two side plates, the second clamping plate is slidably connected to the two side plates, and the second clamping unit is fixedly connected to the first clamping plate.

[0009] In the embodiment of the present application, connecting blocks are provided on both sides of the first clamping plate and the second clamping plate, and connecting grooves are provided on the two side plates, and the connecting blocks are embedded in the connecting grooves.

[0010] In an embodiment of the present application, a fixing groove is provided on one side of the two side plates away from the connecting groove, and the fixing groove is connected to the connecting groove. The test fixture also includes a first screw, one end of which passes through the fixing groove and is screwed to the connecting block.

[0011] In an embodiment of the present application, the second clamping unit includes a third clamping plate and a fourth clamping plate, one end of the third clamping plate is fixedly connected to the first clamping plate, and the other end abuts against the second clamping plate, and one end of the fourth clamping plate is fixedly connected to the first clamping plate, and the other end abuts against the second clamping plate.

[0012] In an embodiment of the present application, a first hole is provided on one end of the third clamping plate and one end of the fourth clamping plate, a plurality of second holes arranged side by side are provided on the first clamping plate, and the test fixture also includes a second screw, one end of the second screw passes through the first hole and is screwed to the second hole.

[0013] In the embodiment of the present application, the first hole is a bar-shaped hole, and the second hole is a round hole.

[0014] In the embodiment of the present application, the length of the first hole is equal to the distance between the centers of two adjacent second holes.

[0015] In an embodiment of the present application, connection holes are provided on both sides of the connection plate, and the test fixture further comprises a test cable, one end of the test cable is connected to the detection probe, and the other end is connected to the connection hole.

[0016] The beneficial effects of the utility model are:

[0017] 1. The utility model proposes a battery test fixture. When the battery to be tested is a square battery with poles located on both sides of the battery, after the clamping assembly fixes the battery to be tested, the lower base plate is embedded in the positioning groove of the test equipment. At this time, the upper pole of the battery to be tested abuts against the detection probe, and the lower pole abuts against the detection probe through the connecting plate. The poles at both ends are connected to the detection probe, so that the battery to be tested with poles located on both sides of the battery can be tested, thereby expanding the test range of the test equipment;

[0018] 2. The utility model proposes a battery test fixture, wherein the distance between the first clamping plate and the second clamping plate and the distance between the third clamping plate and the fourth clamping plate are adjustable, so that the test fixture can be suitable for clamping tests of batteries of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated into the specification and constitute a part of the specification, illustrate embodiments of the utility model and are used together with the description to explain the principles of the utility model. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the utility model, rather than all embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of a battery testing fixture according to an embodiment of the utility model;

[0021] Figure 2 A top view of a battery testing fixture according to an embodiment of the utility model;

[0022] Figure 3 A side view of a battery testing fixture according to an embodiment of the utility model;

[0023] Figure 4 This is a schematic diagram of the connection between a first clamping unit and a side plate of a battery testing fixture according to an embodiment of the utility model;

[0024] Figure 5A schematic diagram of the connection of two clamping units of a battery test fixture according to an embodiment of the present utility model;

[0025] Figure 6 This is a diagram showing the effect of using a battery testing fixture according to an embodiment of the utility model.

[0026] In the figure: 1, lower base plate; 2, side plate; 21, connecting groove; 22, fixing groove; 3, clamping assembly; 31, first clamping unit; 311, first clamping plate; 312, second clamping plate; 313, connecting block; 314, first screw; 315, second hole; 32, second clamping unit; 321, third clamping plate; 322, fourth clamping plate; 323, first hole; 324, second screw; 4, connecting plate; 41, connecting hole; 5, battery cavity; 6, battery to be tested. DETAILED DESCRIPTION

[0027] In order to more clearly illustrate the embodiments of the utility model and the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work. In addition, the design orientation only represents the relative position relationship between the components, not the absolute position relationship.

[0028] The present invention provides a battery test fixture. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , mainly includes a lower base plate 1, a side plate 2, a clamping component 3 and a connecting plate 4.

[0029] In an embodiment of the present application, a battery testing fixture comprises a lower base plate 1, a side plate 2, a clamping assembly 3 and a connecting plate 4. The shape of the lower base plate 1 is the same as the shape of a positioning groove of the testing equipment, so as to facilitate fixing the battery testing fixture on the battery testing equipment. The side plates 2 are arranged on both sides of the lower base plate 1, the clamping assembly 3 is arranged between the two side plates 2, and the connecting plate 4 is arranged between the clamping assembly 3 and the side plates 2. A battery cavity 5 is provided on the clamping assembly 3, and a battery to be tested is accommodated and plugged into the battery cavity 5. The upper pole of the battery is outside the battery cavity 5, and the lower pole of the battery is connected to the connecting plate 4. The connecting plate 4 is made of a conductive material, and the connecting plate 4 is connected to the detection probe. When the battery to be tested is a square battery with poles located on both sides of the battery, after the clamping assembly 3 fixes the battery to be tested, the lower base plate 1 is embedded in the positioning groove of the testing equipment. At this time, the upper pole of the battery to be tested abuts against the detection probe, and the lower pole abuts against the detection probe through the connecting plate 4. The poles at both ends are connected to the detection probe, so that the battery to be tested with the poles located on both sides of the battery can be tested, thereby expanding the test range of the testing equipment.

[0030] In one embodiment, the clamping assembly 3 includes a first clamping unit 31 and a second clamping unit 32 arranged between two clamping plates, the first clamping unit 31 and the second clamping unit 32 are fixedly connected, the first clamping unit 31 and the second clamping unit 32 are connected laterally to form a battery cavity 5, and the first clamping unit 31 and the second clamping unit 32 respectively abut against different sides of the battery to be tested to fix the battery to be tested in the battery cavity 5.

[0031] In one embodiment, the first clamping unit 31 includes a first clamping plate 311 and a second clamping plate 312 which are parallel to each other, the first clamping plate 311 is slidably connected to the two side plates 2, the second clamping plate 312 is slidably connected to the two side plates 2, the second clamping unit 32 is fixed on the first clamping plate 311, the first clamping plate 311 and the second clamping plate 312 can move toward each other or move away from each other between the two side plates 2, and the first clamping plate 311 and the second clamping plate 312 abut against the battery to be tested during the movement toward each other or move away from each other, thereby fixing the battery to be tested. Preferably, in order to enhance the fixing strength of the battery to be tested, the first clamping plate 311 and the second clamping plate 312 abut against the large surface of the battery to be tested.

[0032] Furthermore, connecting blocks 313 are provided on both sides of the first clamping plate 311 and the second clamping plate 312, and connecting grooves 21 are provided on the two side plates 2, and the connecting blocks 313 are embedded in the connecting grooves 21. Specifically, the connecting blocks 313 are square, and the contact area between the square connecting blocks 313 and the connecting grooves 21 is large, so that the clamping plates and the side plates 2 are not easy to move relative to each other, so that the stability of the battery to be tested is improved when it is fixed.

[0033] In order to further improve the stability of the battery to be tested when it is fixed, a fixing groove 22 is provided on the side of the two side panels 2 away from the connecting groove 21, and the fixing groove 22 is connected to the connecting groove 21. The test fixture also includes a first screw 314. One end of the first screw 314 passes through the fixing groove 22 and is screwed to the connecting block 313 in the connecting groove 21. The other end of the first screw 314 is embedded in the fixing groove 22 and abuts against the fixing groove 22.

[0034] It can be foreseen that even if the battery to be tested is fixed by abutting the first clamping plate 311 and the second clamping plate 312 against the battery to be tested, the battery to be tested will still shake between the first clamping plate 311 and the second clamping plate 312. In order to avoid shaking of the battery to be tested, the second clamping unit 32 includes a third clamping plate 321 and a fourth clamping plate 322. One end of the third clamping plate 321 is fixedly connected to the first clamping plate 311, and the other end abuts against the second clamping plate 312. One end of the fourth clamping plate 322 is fixedly connected to the first clamping plate 311, and the other end abuts against the second clamping plate 312. The third clamping plate 321 and the fourth clamping plate 322 abut against the surface of the battery to be tested, thereby fixing the position of the battery to be tested between the first clamping plate 311 and the second clamping plate 312, thereby avoiding shaking of the battery to be tested.

[0035] Specifically, the third clamping plate 321 and the fourth clamping plate 322 are L-shaped plates, and a first hole 323 is provided on one end of the third clamping plate 321 and one end of the fourth clamping plate 322, and a second hole 315 is provided on the first clamping plate 311. The test fixture also includes a second screw 324, and one end of the second screw 324 passes through the first hole 323 and is screwed with the second hole 315. There are multiple second holes 315 arranged side by side on the first clamping plate 311. The arrangement of multiple second holes 315 causes the third clamping plate 321 and the fourth clamping plate 322 to have multiple installation positions. The distance between the first clamping plate 311 and the second clamping plate 312 and the distance between the third clamping plate 321 and the fourth clamping plate 322 are both adjustable, so that the test fixture can be suitable for clamping tests of batteries to be tested of different sizes.

[0036] Furthermore, the first hole 323 is a bar-shaped hole, and the second hole 315 is a round hole, thereby improving the adjustment accuracy of the distance between the third clamping plate 321 and the fourth clamping plate 322 .

[0037] Preferably, the length of the first hole 323 is equal to the distance between the centers of two adjacent second holes 315 .

[0038] In one embodiment, a third hole is provided at both ends of the connection plate 4, the third hole is a strip hole, a fourth hole is provided on the lower bottom plate 1, the fourth hole is a round hole, and the test fixture further includes a third screw, one end of the third screw passes through the third hole and is screwed to the fourth hole. A connection hole 41 is also provided at both ends of the connection plate 4, and the test fixture further includes a test cable, one end of the test cable is connected to the detection probe, and the other end is connected to the connection hole 41, so as to connect the lower pole of the battery to be tested to the detection probe.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device comprising the elements.

[0040] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementation methods, and the specific embodiments of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A battery testing fixture, characterized in that: The invention comprises a lower base plate (1) having the same shape as the positioning groove of the test equipment, side plates (2) arranged on both sides of the lower base plate (1), a clamping assembly (3) arranged between the two side plates (2), and a connecting plate (4) arranged between the clamping assembly (3) and the lower base plate (1); the clamping assembly (3) is provided with a battery cavity (5), the battery to be tested is inserted into the battery cavity (5), the connecting plate (4) abuts against the lower end pole of the battery to be tested, the connecting plate (4) is made of a conductive material, and the connecting plate (4) is connected to a detection probe.

2. A battery testing fixture according to claim 1, characterized in that: The clamping assembly (3) comprises a first clamping unit (31) and a second clamping unit (32) which are arranged between the two side plates (2); the first clamping unit (31) and the second clamping unit (32) are fixedly connected, and the first clamping unit (31) and the second clamping unit (32) are connected at their sides to form the battery cavity (5).

3. A battery testing fixture according to claim 2, characterized in that: The first clamping unit (31) comprises a first clamping plate (311) and a second clamping plate (312) which are parallel to each other; the first clamping plate (311) is slidably connected to the two side plates (2), the second clamping plate (312) is slidably connected to the two side plates (2), and the second clamping unit (32) is fixedly connected to the first clamping plate (311).

4. A battery test fixture according to claim 3, characterized in that: Connecting blocks (313) are provided on both sides of the first clamping plate (311) and the second clamping plate (312), connecting grooves (21) are provided on the two side plates (2), and the connecting blocks (313) are embedded in the connecting grooves (21).

5. A battery testing fixture according to claim 4, characterized in that: A fixing groove (22) is provided on one side of the two side plates (2) away from the connecting groove (21), the fixing groove (22) being in communication with the connecting groove (21), and the test fixture further comprises a first screw (314), one end of the first screw (314) passing through the fixing groove (22) and being screwed to the connecting block (313).

6. A battery testing fixture according to claim 3, characterized in that: The second clamping unit (32) comprises a third clamping plate (321) and a fourth clamping plate (322); one end of the third clamping plate (321) is fixedly connected to the first clamping plate (311), and the other end abuts against the second clamping plate (312); one end of the fourth clamping plate (322) is fixedly connected to the first clamping plate (311), and the other end abuts against the second clamping plate (312).

7. A battery testing fixture according to claim 6, characterized in that: A first hole (323) is provided on one end of the third clamping plate (321) and one end of the fourth clamping plate (322); a plurality of second holes (315) arranged side by side are provided on the first clamping plate (311); the test fixture further comprises a second screw (324); one end of the second screw (324) passes through the first hole (323) and is screwed to the second hole (315).

8. A battery testing fixture according to claim 7, characterized in that: The first hole (323) is a strip-shaped hole, and the second hole (315) is a round hole.

9. A battery testing fixture according to claim 8, characterized in that: The length of the first hole (323) is equal to the distance between the centers of two adjacent second holes (315).

10. A battery testing fixture according to claim 1, characterized in that: The connection plate (4) is provided with connection holes (41) on both sides. The test fixture further comprises a test cable, one end of the test cable is connected to the detection probe, and the other end is connected to the connection hole (41).

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