Battery test fixture and battery test apparatus

Abstract

This utility model relates to a battery testing fixture, including clamping members, a support member, and fasteners. Two clamping members are spaced apart, forming a receiving space between them. The two clamping members are connected and fixed by fasteners. The support member is disposed on the side of one of the clamping members facing the receiving space. The other clamping member has a mounting groove that mates with the support member. The free end of the support member is inserted into the mounting groove. The support member has a first support surface for abutting against the bottom surface of the battery and a second support surface for abutting against one of the horizontal sides of the battery. By adjusting the insertion dimensions between the support member and the mounting groove, one side of the battery in the width direction or the thickness direction can be oriented towards the outside of the receiving space to perform compression tests and puncture tests on that side, meeting the multi-directional testing requirements of the battery. Furthermore, by adjusting the insertion dimensions between the support member and the mounting groove, it is also possible to clamp batteries of different sizes.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery testing fixture and battery testing equipment. Background Technology

[0002] Square aluminum-cased lithium batteries for commercial applications must pass safety testing before being released to the market. This safety testing primarily includes compression and puncture tests. Related technologies mainly involve performing compression and puncture tests on the large surface area of ​​the battery. This involves fixing the battery with a test fixture and then applying pressure to the large surface area, or using a needle to puncture the large surface area. In practical applications, multiple batteries are stacked together along their thickness to form battery modules, which are then used as the smallest unit. Within a battery module, the large surface area of ​​a single battery is shielded by heat-insulating material, thus reducing the likelihood of compression or puncture on that area. In practice, it has been found that the areas at risk of compression or puncture during application are mainly concentrated on the width-direction end faces of the battery. Therefore, considering this practical need, compression and puncture tests are required on the width-direction end faces of the battery.

[0003] Since the test fixtures in related technologies are mainly designed for large-area compression and puncture tests of batteries, their size and structure cannot meet the needs of end-face testing in the width direction of the battery. Therefore, there is an urgent need for a general-purpose battery test fixture to meet the testing needs in multiple directions. Utility Model Content

[0004] The purpose of this utility model is to provide a battery testing fixture and battery testing equipment that are easy to use and highly versatile.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A battery testing fixture is provided, comprising a clamping member, a support member, and a fastener. Two clamping members are spaced apart, forming a receiving space for accommodating a battery. The two clamping members are connected and fixed by the fastener. The support member is disposed on the side of one of the clamping members facing the receiving space. The other clamping member has a mounting groove that mates with the support member. The free end of the support member is inserted into the mounting groove. The support member has a first support surface for abutting against the bottom surface of the battery and a second support surface for abutting against one of the horizontal sides of the battery.

[0007] Furthermore, the support member includes a first support plate and a second support plate arranged perpendicularly to each other, with the first support surface disposed on the first support plate and the second support surface disposed on the second support plate.

[0008] Furthermore, the first support plate is connected to the second support plate, and the mounting groove includes a horizontal groove for inserting the first support plate and a vertical groove for inserting the second support plate, wherein the horizontal groove and the vertical groove are in communication.

[0009] Furthermore, the first support plate and the second support plate are spaced apart, and the mounting groove includes a horizontal groove for inserting the first support plate and a vertical groove for inserting the second support plate.

[0010] Furthermore, the horizontal groove is spaced apart from the vertical groove.

[0011] Furthermore, the second support plate is provided with clearance holes for puncture testing.

[0012] Furthermore, there are multiple second support plates, which are spaced apart in the vertical direction, and an avoidance hole is formed between two adjacent second support plates for use in puncture testing.

[0013] Furthermore, the clamping member includes a horizontally arranged base plate and a vertically arranged vertical plate, with the receiving space formed between the two vertical plates, and the base plate and the vertical plate are detachably connected.

[0014] Furthermore, the clamping member also includes connecting plates, with connecting plates provided at both opposite ends of the vertical plate, and the connecting plates are used to install the fasteners.

[0015] A battery testing device is also provided, including a battery testing fixture, and a compression component and / or a puncture component. The compression component is disposed on the side of the receiving space of the battery testing fixture opposite to the second support surface, and the compression component is used to apply pressure to the battery in the receiving space. The puncture component is disposed on the side of the receiving space of the battery testing fixture opposite to the second support surface, and the puncture component is used to perform a puncture test on the battery.

[0016] The beneficial effects of this utility model are as follows: By setting up a support member, the first support surface of the support member abuts against the bottom surface of the battery, and the second support surface of the support member abuts against one side of the battery in the horizontal direction. The second support surface is used to limit the battery in the compression or puncture direction. At the same time, two clamping members are used to clamp the battery, so that the battery can be securely clamped. When installing the battery, simply place the battery on the support member and lock the two clamping members with fasteners to complete the clamping, which is convenient to use. By adjusting the insertion size between the support member and the mounting slot, the size of the accommodating space can be adjusted at will. One side of the battery in the width direction or the other side in the thickness direction can be oriented towards the outside of the accommodating space to perform compression and puncture tests on the side facing outward of the accommodating space, meeting the multi-directional testing requirements of the battery. In addition, by adjusting the insertion size between the support member and the mounting slot, it can also be used to clamp batteries of different sizes. Therefore, this battery testing fixture has the characteristics of being easy to use and highly versatile. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the battery testing fixture according to Embodiment 1 of this utility model.

[0018] Figure 2 This is an exploded view of the battery testing fixture according to Embodiment 1 of this utility model.

[0019] Figure 3 This is a schematic diagram of the battery testing fixture according to Embodiment 2 of this utility model.

[0020] Figure 4 This is a schematic diagram of the battery testing fixture according to Embodiment 3 of this utility model.

[0021] Figure 5 This is a schematic diagram of the battery testing fixture according to Embodiment 4 of this utility model.

[0022] Figure 6 This is a schematic diagram of the second support plate in Embodiment 5 of this utility model.

[0023] Figure 7 This is a partial schematic diagram of the clamping component in Embodiment Six of this utility model.

[0024] In the picture:

[0025] 1. Clamping component; 10. Accommodation space; 11. First clamping component; 12. Second clamping component; 13. Base plate; 14. Vertical plate; 15. Mounting slot; 151. Horizontal slot; 152. Vertical slot; 16. Screw hole; 17. Connecting plate; 2. Support component; 21. First support plate; 211. First support surface; 22. Second support plate; 221. Clearance hole; 222. Second support surface; 3. Screw; 4. Battery. Detailed Implementation

[0026] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] Example 1

[0028] like Figure 1 and Figure 2 As shown, this embodiment provides a battery testing fixture, including a clamping member 1, a support member 2, and fasteners. There are two clamping members 1: a first clamping member 11 and a second clamping member 12. The first clamping member 11 and the second clamping member 12 are spaced apart horizontally to form a receiving space 10 for accommodating a battery 4. Fasteners, specifically screws 3, are used to lock the two clamping members 1. The two clamping members 1 are connected and fixed by screws 3, enabling them to clamp the battery 4. The support member 2 supports and limits the battery 4. The support member 2 is disposed on the first clamping member 11, and is located on the side of the first clamping member 11 facing the receiving space 10. The second clamping member 12 has a mounting groove 15 that mates with the support member 2. The end of the support member 2 facing away from the first clamping member 11 is its free end, which is inserted into the mounting groove 15. The support member 2 is provided with a first support surface 211 and a second support surface 222. The first support surface 211 abuts against the bottom surface of the battery 4, and the second support surface 222 abuts against one of the sides of the battery 4 in the horizontal direction.

[0029] Understandably, after the battery 4 is installed into the battery test fixture, two of its four horizontal sides abut against the two clamping members 1, and one side abuts against the second support surface 222 of the support member 2. The remaining side is open to the outside, allowing for compression and puncture tests to be performed on the battery 4. The bottom surface of the battery 4 abuts against the first support surface 211 of the support member 2. It is evident that the height (Z direction in the diagram), width (Y direction in the diagram), and thickness (X direction in the diagram) of the battery 4 are all limited, ensuring its secure fixation on the battery test fixture. By adjusting the insertion length between the support member 2 and the mounting slot 15, batteries of different sizes can be accommodated, improving the versatility of the battery test fixture. Furthermore, the fasteners used to secure the two clamping members 1 facilitate the installation and removal of the battery 4 from the battery test fixture, enhancing its ease of use.

[0030] In this embodiment, the two clamping members 1 have identical structures, and the first clamping member 11 and the second clamping member 12 do not limit the placement of the support member 2 and the mounting groove 15. The support member 2 can be placed on one of the clamping members 1, and the mounting groove 15 can be placed on the other clamping member 1. Specifically, the support member 2 is L-shaped and includes a first support plate 21 and a second support plate 22 arranged perpendicularly to each other. The first support plate 21 is arranged horizontally, and a first support surface 211 is formed on the first support plate 21 for abutting against the bottom surface of the battery 4. The second support plate 22 is arranged vertically, and a second support surface 222 is formed on the second support plate 22 for abutting against one side of the battery 4 in the horizontal direction. The first support plate 21 and the second support plate 22 are connected to form an integral structure. Correspondingly, the mounting groove 15 is also L-shaped, including a horizontal groove 151 and a vertical groove 152. The length of the horizontal groove 151 extends horizontally, and the free end of the first support plate 21 is inserted into the horizontal groove 151. The length of the vertical groove 152 extends vertically, and the free end of the second support plate 22 is inserted into the vertical groove 152. The horizontal groove 151 and the vertical groove 152 are connected.

[0031] Specifically, the clamping member 1 is L-shaped and includes a horizontally arranged base plate 13 and a vertically arranged vertical plate 14. A receiving space 10 is formed between the two vertical plates 14, and the base plate 13 is located on the side of the corresponding vertical plate 14 facing away from the receiving space 10. In practical applications, the base plate 13 can be used to fix the entire battery testing fixture to the workbench. The support member 2 and the mounting groove 15 are respectively arranged on the two vertical plates 14. The base plate 13 and the vertical plate 14 are an integral structure. Screws 3 pass through the vertical plates 14. Correspondingly, the vertical plates 14 are provided with multiple screw holes 16 for passing through the screws 3. The screw holes 16 are distributed around the periphery of the vertical plates 14 so that the screws 3 can be distributed around the battery 4 to firmly fix the battery 4.

[0032] In this embodiment, the battery testing fixture is used as follows: Step 1, bring the two clamping members 1 close to each other and insert the free end of the support member 2 into the mounting slot 15. Step 2, place the battery 4 into the receiving space 10 and make one side of the battery 4 abut against the second support surface 222 of the support member 2. Then continue to bring the two clamping members 1 close to each other so that the two clamping members 1 clamp the battery 4. Step 3, install the screws 3 to lock the two clamping members 1, thus completing the clamping of the battery 4.

[0033] Example 2

[0034] like Figure 3As shown, this embodiment provides a battery testing fixture with a structure similar to that of Embodiment 1, except that the support member 2 is a split structure, i.e., the first support plate 21 and the second support plate 22 are spaced apart. The first support plate 21 is horizontally arranged, and one end of the first support plate 21 is connected and fixed to the vertical plate 14 in the first clamping member 11. The second support plate 22 is vertically arranged, and one end of the second support plate 22 is connected and fixed to the vertical plate 14 in the first clamping member 11. Correspondingly, the vertical plate 14 in the second clamping member 12 is provided with a mounting groove 15, which includes a horizontal groove 151 for inserting the first support plate 21 and a vertical groove 152 for inserting the second support plate 22, and the horizontal groove 151 and the vertical groove 152 communicate with each other. The clamping member 1 is a split structure, and the base plate 13 and the vertical plate 14 are connected and fixed by fasteners. The fasteners are screws 3. In this embodiment, by setting the support member 2 and the clamping member 1 as a separate structure, the first support plate 21 and the second support plate 22 are both flat plate structures, and the bottom plate 13 and the vertical plate 14 are both flat plate structures, which helps to simplify the processing technology of the support member 2 and the clamping member 1.

[0035] Example 3

[0036] like Figure 4 As shown, this embodiment provides a battery testing fixture, whose structure is similar to that of Embodiment 1, except that: the support member 2 is a split structure, that is, the first support plate 21 and the second support plate 22 are spaced apart. The first support plate 21 is horizontally arranged, and one end of the first support plate 21 is connected and fixed to the vertical plate 14 in the first clamping member 11. The second support plate 22 is vertically arranged, and one end of the second support plate 22 is connected and fixed to the vertical plate 14 in the first clamping member 11. Correspondingly, the vertical plate 14 in the second clamping member 12 is provided with a mounting groove 15, which includes a horizontal groove 151 for inserting the first support plate 21 and a vertical groove 152 for inserting the second support plate 22, with the horizontal groove 151 and the vertical groove 152 spaced apart. The size of the horizontal groove 151 matches the free end of the first support plate 21, and the size of the vertical groove 152 matches the free end of the second support plate 22. The clamping member 1 is a split structure, and the base plate 13 and the vertical plate 14 are connected and fixed by fasteners. The fasteners are screws 3. In this embodiment, by setting the support member 2 and the clamping member 1 as a separate structure, the first support plate 21 and the second support plate 22 are both flat plate structures, and the bottom plate 13 and the vertical plate 14 are both flat plate structures, which helps to simplify the processing technology of the support member 2 and the clamping member 1.

[0037] Example 4

[0038] like Figure 5As shown, this embodiment provides a battery testing fixture, the structure of which is similar to that of Embodiment 3, except that: there are multiple second support plates 22, which are spaced apart vertically. Correspondingly, each second support plate 22 is provided with a vertical groove 152 so that the free end of the second support plate 22 can be inserted into the corresponding vertical groove 152. Of course, in some embodiments, to simplify the processing of the vertical groove 152, all the vertical grooves 152 can be connected, or some of the vertical grooves 152 can be connected to the horizontal groove 151. An avoidance hole 221 is formed between two adjacent second support plates 22 for use in puncture testing. In the puncture test, when the puncture needle needs to penetrate the entire battery 4, the avoidance hole 221 is used to avoid the puncture needle.

[0039] Example 5

[0040] like Figure 6 As shown, this embodiment provides a battery testing fixture, the structure of which is similar to that of Embodiment 1, except that: the second support plate 22 is provided with a clearance hole 221 for puncture testing. In the puncture test, when the puncture needle needs to penetrate the entire battery 4, the clearance hole 221 is used to avoid the puncture needle.

[0041] Example 6

[0042] like Figure 7 As shown, this embodiment provides a battery testing fixture, the structure of which is similar to that of Embodiment 1, except that: the clamping member 1 further includes a connecting plate 17, and connecting plates 17 are provided at both opposite ends of the vertical plate 14. The connecting plate 17 is used to install fasteners, which are screws 3. Correspondingly, the connecting plate 17 is provided with screw holes 16 for the screws 3 to pass through. The connecting plate 17 is installed on the connecting plate 17 by screws 3. Of course, in some embodiments, the connecting plate 17 and the vertical plate 14 can also be set as an integral structure, or the connecting plate 17 and the vertical plate 14 can be welded and fixed. In this embodiment, by setting the connecting plate 17 to install the fastener, the fastener is located at the periphery of the vertical plate 14, avoiding interference between the fastener and the battery 4.

[0043] Example 7

[0044] like Figure 1 and Figure 2As shown, this embodiment also provides a battery testing device, including a battery testing fixture, a compression assembly, and a puncture assembly. The compression assembly is prior art, and is disposed on the side of the battery testing fixture's receiving space 10 opposite to the second support surface 222, i.e., the compression assembly is located on the side of the battery 4 opposite to the second support plate 22. The compression assembly includes a retractable compression section, which applies pressure to the battery 4 within the receiving space 10 through its retraction and extension. The puncture assembly is prior art, and is disposed on the side of the battery testing fixture's receiving space 10 opposite to the second support surface 222. The puncture assembly includes a retractable needle, which penetrates the battery 4 within the receiving space 10 through its retraction and extension. Of course, in some embodiments, this battery testing device can also be used to perform a single compression test or puncture test on the battery 4; that is, the battery testing device includes a battery testing fixture and a compression assembly, or includes a battery testing fixture and a puncture assembly.

[0045] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A battery test fixture, comprising: The device includes clamping components, a support component, and fasteners. Two clamping components are spaced apart, forming a receiving space between them for accommodating a battery. The two clamping components are connected and fixed by the fasteners. A support component is disposed on the side of one of the clamping components facing the receiving space. The other clamping component has a mounting groove that mates with the support component. The free end of the support component is inserted into the mounting groove. The support component has a first support surface for abutting against the bottom surface of the battery and a second support surface for abutting against one of the horizontal sides of the battery.

2. The battery test fixture of claim 1, wherein, The support member includes a first support plate and a second support plate arranged perpendicularly to each other, with the first support surface disposed on the first support plate and the second support surface disposed on the second support plate.

3. The battery test fixture of claim 2, wherein, The first support plate is connected to the second support plate, and the mounting groove includes a horizontal groove for inserting the first support plate and a vertical groove for inserting the second support plate, wherein the horizontal groove and the vertical groove are in communication.

4. The battery test fixture of claim 2, wherein, The first support plate and the second support plate are spaced apart, and the mounting groove includes a horizontal groove for inserting the first support plate and a vertical groove for inserting the second support plate.

5. The battery test fixture of claim 4, wherein, The horizontal groove is spaced apart from the vertical groove.

6. The battery test fixture of claim 2, wherein, The second support plate is provided with clearance holes for puncture testing.

7. The battery test fixture of claim 2, wherein, There are multiple second support plates, which are spaced apart in the vertical direction, and an avoidance hole is formed between two adjacent second support plates for puncture testing.

8. The battery test fixture of any one of claims 1 to 7, wherein, The clamping member includes a horizontally arranged base plate and a vertically arranged vertical plate, with the receiving space formed between the two vertical plates, and the base plate and the vertical plate are detachably connected.

9. The battery test fixture of claim 8, wherein, The clamping component also includes connecting plates, which are provided at both opposite ends of the vertical plate. The connecting plates are used to install the fasteners.

10. A battery testing apparatus, characterized by, The battery test fixture includes any one of claims 1 to 9, and a compression assembly and / or a puncture assembly, wherein the compression assembly is disposed on the side of the receiving space of the battery test fixture opposite to the second support surface, the compression assembly is used to apply pressure to the battery in the receiving space, and the puncture assembly is disposed on the side of the receiving space of the battery test fixture opposite to the second support surface, the puncture assembly is used to perform a puncture test on the battery.

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