Battery cell test tool

Abstract

The utility model relates to the field of battery cell testing, and provides a battery cell testing tool. The battery cell testing tool comprises a connecting assembly which is arranged to be of an annular structure and is used for detachably sleeving the outer side of a to-be-tested battery cell in a surrounding mode; and the conductive part is arranged on the connecting assembly, the conductive part is used for being in contact with the positive electrode or the negative electrode of the battery cell, and a pole is arranged on the conductive part and is used for being connected with test equipment. When a to-be-tested battery cell needs to be tested, the connecting assembly is annularly sleeved on the outer side of the battery cell, the conductive piece on the connecting assembly is in contact with the positive electrode or the negative electrode of the battery cell, then testing equipment is connected with the pole of the conductive piece, and after the outer wall is tested, the connecting assembly is detached from the battery cell. The problem that the battery cell cannot be reused due to the fact that the tab cannot be detached after the test is completed in the prior art is solved, and the beneficial effect that the tested battery cell can be reused is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery cell testing, in particular to a battery cell testing tooling Background Art

[0002] With the continuous development of the new energy industry and the update and iteration of lithium-ion battery technology, the performance testing of battery cells has become an important link to ensure the safety, reliability and performance compliance of batteries.

[0003] Since both the positive electrode and the negative electrode of the battery cell are flat, it is necessary to weld ear tabs to both the positive electrode and the negative electrode of the battery cell during testing, and the battery cell is electrically connected to the testing equipment through the ear tabs. However, for the battery cell after welding the ear tabs, the ear tabs cannot be disassembled, so the battery cell can only be scrapped and cannot be reused, resulting in a high testing cost of the battery cell. Content of the Utility Model

[0004] The utility model provides a battery cell testing tooling to solve the defect that for the battery cell after welding the ear tabs in the prior art, the ear tabs cannot be disassembled, so the battery cell can only be scrapped and cannot be reused.

[0005] In a first aspect, the utility model provides a battery cell testing tooling, including:

[0006] A connection component, which is set as an annular structure and is used for detachably sleeving outside the battery cell to be tested;

[0007] A conductive component, which is arranged on the connection component and is used for contacting with the positive electrode or the negative electrode of the battery cell. A pole column is arranged on the conductive component and is used for connecting with the testing equipment.

[0008] According to the battery cell testing tooling provided by the utility model, the connection component includes a connecting piece, a fusing piece and a temperature switch;

[0009] Wherein, two ends of the connecting piece are connected by the fusing piece, so that the connecting piece forms an annular structure that can be sleeved outside the battery cell to be tested. The temperature switch is arranged on the connecting piece and is used for detecting the temperature of the battery cell to be tested. The temperature switch can be closed when reaching a preset temperature. The fusing piece is electrically connected to the temperature switch and is used for connecting to a power supply through the temperature switch.

[0010] According to the battery cell testing tooling provided by the utility model, the connection component further includes a disassembling piece. The fusing piece is arranged at the first end of the connecting piece. The disassembling piece is connected to the fusing piece and is detachably connected to the second end of the connecting piece.

[0011] According to a cell testing tooling provided by the present utility model, the disassembling member includes a hook, and the hook is used for hooking on the second end of the connecting member.

[0012] According to a cell testing tooling provided by the present utility model, the disassembling member is threadedly connected, magnetically connected or connected by a magic tape to the second end of the connecting member.

[0013] According to a cell testing tooling provided by the present utility model, a clamping hole for the fusing member to pass through is provided on the disassembling member.

[0014] According to a cell testing tooling provided by the present utility model, the connecting assembly further includes a housing, the housing is connected to the first end of the connecting member, and the fusing member and the temperature switch are both arranged in the housing.

[0015] According to a cell testing tooling provided by the present utility model, the connecting member includes a mounting seat, a first connecting body and a second connecting body;

[0016] Wherein, the conductive member is arranged on the mounting seat, the first connecting body and the second connecting body are respectively connected to both sides of the mounting seat, and the first connecting body and the second connecting body are connected by the fusing member.

[0017] According to a cell testing tooling provided by the present utility model, at least one of the first connecting body and the second connecting body is arranged as an elastic member.

[0018] According to a cell testing tooling provided by the present utility model, the conductive member includes a conductive block, the conductive block is arranged inside the connecting assembly and is used for contacting the positive or negative electrode of the cell, the pole column is arranged outside the connecting assembly, and the pole column is connected to the conductive block.

[0019] For the cell testing tooling provided by the present utility model, when it is necessary to test a cell to be tested, the connecting assembly is sleeved on the outside of the cell, and the conductive member on the connecting assembly is made to contact the positive or negative electrode of the cell, and then the testing device is connected to the pole column of the conductive member. After testing the outer wall, the connecting assembly can be removed from the cell, solving the problem in the prior art that the ear cannot be disassembled after testing, resulting in the cell not being reusable, and achieving the beneficial effect of making the tested cell reusable. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the attached drawings required for the description of the embodiments or the prior art. Obviously, the attached drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other attached drawings can also be obtained based on these attached drawings.

[0021] Figure 1 It is a schematic structural diagram of a cell testing tooling provided by an embodiment of the present utility model;

[0022] Figure 2 It is a schematic diagram of the usage state of a cell testing tooling provided by an embodiment of the present utility model;

[0023] Figure 3 It is a schematic structural diagram of the connection between a disassembly part and a fusing part provided by an embodiment of the present utility model.

[0024] Reference signs:

[0025] 1. Connection assembly; 101. Connector; 1011. Mounting seat; 1012. First connection body; 1013. Second connection body; 102. Fusing part; 103. Temperature switch; 104. Disassembly part; 105. Housing; 2. Conductive part; 201. Terminal; 202. Conductive block; 3. Cell; 301. Positive electrode; 302. Negative electrode. Detailed implementation manners

[0026] To make the objectives, technical solutions and advantages of the present utility model clearer, the following will clearly and completely describe the technical solutions in the present utility model with reference to the attached drawings in the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments in the present utility model belong to the scope protected by the present utility model.

[0027] The following will describe Figures 1 - 3 the cell 3 testing tooling of the present utility model.

[0028] Specifically, the cell 3 testing tooling includes a connection assembly 1 and a conductive part 2.

[0029] Among them, the connection assembly 1 is arranged in a ring structure. Referring to Figure 2 as shown, the connection assembly 1 is used to detachably sleeved outside the cell 3 to be tested, so that the connection assembly 1 is connected to the cell 3.

[0030] The conductive member 2 is disposed on the connection assembly 1, and the conductive member 2 is used to contact the positive electrode 301 or the negative electrode 302 of the battery cell 3. A pole column 201 is provided on the conductive member 2, and the pole column 201 is used to connect to the test device. For example, the conductive member 2 is provided as a metal member. Optionally, the test device is a charging device or a discharging device.

[0031] In the battery cell 3 testing tooling provided in the embodiment of the present utility model, when it is necessary to test the battery cell 3 to be tested, the connection assembly 1 is sleeved around the outside of the battery cell 3, and the conductive member 2 on the connection assembly 1 is brought into contact with the positive electrode 301 or the negative electrode 302 of the battery cell 3. Then, the test device is connected to the pole column 201 of the conductive member 2. After testing the outer wall, the connection assembly 1 can be removed from the battery cell 3, which solves the problem in the prior art that the ear cannot be disassembled after testing, resulting in the battery cell 3 not being reusable, and achieves the beneficial effect of reusing the tested battery cell 3.

[0032] Reference Figures 1 - 3 As shown, in some embodiments provided by the present utility model, the connection assembly 1 includes a connecting member 101, a fusing member 102, and a temperature switch 103.

[0033] Among them, both ends of the connecting member 101 are connected by the fusing member 102, so that the connecting member 101 forms an annular structure that can be sleeved around the outside of the battery cell 3 to be tested. For example, the fusing member 102 can be a fuse wire. The temperature switch 103 is provided on the connecting member 101 and is used to detect the temperature of the battery cell 3 to be tested. For example, the temperature switch 103 is in contact with the battery cell 3. The temperature switch 103 can be closed when the preset temperature is reached, that is, the temperature switch 103 is set as a normally open switch and is closed when the temperature reaches the preset temperature. The fusing member 102 is electrically connected to the temperature switch 103 and is used to connect to the power supply through the temperature switch 103.

[0034] In this embodiment, during the process of testing the battery cell 3, the temperature of the battery cell 3 is transmitted to the temperature switch 103. When the temperature value of the battery cell 3 is greater than or equal to the preset temperature of the temperature switch 103, the temperature switch 103 is closed, and the fuse wire is conducted with the power supply through the temperature switch 103. The current of the power supply passes through the fuse wire to melt the fuse wire. After the fuse wire melts, the connection between both ends of the connecting member 101 is disconnected, so that the connection assembly 1 automatically falls off from the battery cell 3, ending the test process, or facilitating the operator to quickly remove the connection assembly 1 from the battery cell 3. Such a setting can quickly disconnect the battery cell 3 testing tooling from the battery cell 3 after the battery cell 3 overheats, avoiding further temperature rise or spontaneous combustion of the battery cell 3.

[0035] In some embodiments provided by the present utility model, the connection assembly 1 further includes a disassembly member 104. The fusing member 102 is provided at the first end of the connecting member 101. The disassembly member 104 is connected to the fusing member 102, and the disassembly member 104 is detachably connected to the second end of the connecting member 101. That is, the first end of the connecting member 101 is connected to the second end of the second connecting member 101 through both the fusing member 102 and the disassembly member 104.

[0036] In this embodiment, by detachably connecting the disassembly member 104 to the connecting member 101, before the connecting member 101 is sleeved outside the battery cell 3, the disassembly member 104 and the connecting member 101 can be opened. After the connecting member 101 is placed on the battery cell 3, the disassembly member 104 and the connecting member 101 are connected again to form a ring structure for the connecting member 101. In this way, it is convenient to sleeve the connection assembly 1 outside the battery cell 3. When the connection assembly 1 needs to be disassembled, the disassembly member 104 and the connecting member 101 can be opened to directly remove the connection assembly 1 from the battery cell 3. That is, by providing the disassembly member 104, it is more convenient to sleeve the connection assembly 1 on the battery cell 3 or remove it from the battery cell 3.

[0037] In some embodiments provided by the present utility model, the disassembly member 104 includes a hook for hooking on the second end of the connecting member 101, that is, a positioning hole for cooperating with the hook is provided at the second end of the connecting member 101. With such a setting, the disassembly member 104 is connected to the connecting member 101 through the hook. On the one hand, the connection between the hook and the connecting member 101 is stable, and on the other hand, the disassembly and assembly between the disassembly member 104 and the connecting member 101 are convenient.

[0038] Of course, the disassembly member 104 is not limited to being detachably connected to the connecting member 101 through a hook. For example, in other embodiments provided by the present utility model, the disassembly member 104 is threadedly connected, magnetically connected or connected by a magic tape to the second end of the connecting member 101. With such a setting, the detachable connection between the disassembly member 104 and the connecting member 101 can also be realized.

[0039] In some embodiments provided by the present utility model, a clamping hole for the fusing member 102 to pass through is provided on the disassembly member 104. For example, both ends of the fusing member 102 are connected to the connecting member 101, and the fusing member 102 passes through the clamping hole of the disassembly member 104. After the fusing member 102 is fused, the disassembly member 104 is separated from the fusing member 102, so that the connection assembly 1 is disconnected and falls off from the battery cell 3. With such a setting, the structure of the connection between the disassembly member 104 and the fusing member 102 is simple and convenient for processing the disassembly member 104.

[0040] In some embodiments provided by the present utility model, the connection assembly 1 further includes a housing 105. The housing 105 is connected to the first end of the connecting member 101, and both the fusing member 102 and the temperature switch 103 are disposed within the housing 105. The disassembling member 104 extends into the housing 105 and is connected to the fusing member 102.

[0041] In this embodiment, by providing the housing 105 and disposing the fusing member 102 and the temperature switch 103 within the housing 105, it is convenient to protect the fusing member 102 and the temperature switch 103 through the housing 105, and to prevent the user from accidentally touching the fusing member 102 and the temperature switch 103 as well as the wires of the fusing member 102 and the temperature switch 103.

[0042] Optionally, the housing 105 is made of a heat-conducting material, so that the temperature of the battery cell 3 can be conducted to the temperature switch 103 through the housing 105, enabling the temperature switch 103 to close in a timely manner in response to the temperature of the battery cell 3.

[0043] In some embodiments provided by the present utility model, the connecting member 101 includes a mounting seat 1011, a first connecting body 1012, and a second connecting body 1013.

[0044] Among them, the conductive member 2 is disposed on the mounting seat 1011, the first connecting body 1012 and the second connecting body 1013 are respectively connected to both sides of the mounting seat 1011, and the first connecting body 1012 and the second connecting body 1013 are connected by the fusing member 102. For example, the housing 105 is connected to the first connecting body 1012, the fusing member 102 is disposed within the housing 105, the disassembling member 104 extends into the housing 105 and is connected to the fusing member 102, and the portion of the disassembling member 104 located outside the housing 105 is detachably connected to the second connecting body 1013.

[0045] In this embodiment, by providing the mounting seat 1011 and disposing the conductive member 2 on the mounting seat 1011, it is convenient to fix and limit the conductive member 2 through the mounting seat 1011, enabling the conductive member 2 to accurately contact the positive electrode 301 or the negative electrode 302 of the battery cell 3. By connecting the first connecting body 1012 and the second connecting member 101 to both sides of the mounting seat 1011, the first connecting body 1012 and the second connecting body 1013 can be respectively disposed on both sides of the battery cell 3 and connected to each other after surrounding the battery cell 3, thereby fixing the mounting seat 1011 at the position where the positive electrode 301 or the negative electrode 302 is located.

[0046] In some embodiments provided by the present utility model, at least one of the first connecting body 1012 and the second connecting body 1013 is provided as an elastic member. By setting at least one of the first connecting body 1012 and the second connecting body 1013 as an elastic member, on the one hand, under the elastic force of the elastic member, it can ensure close contact between the conductive member 2 and the positive electrode 301 or the negative electrode 302, reducing the problem of loose connection. On the other hand, after the fusing member 102 is disconnected, during the process of the elastic member recovering its deformation, an impact force is generated, causing the connection assembly 1 to shift, so as to facilitate the detachment of the connection assembly 1 from the battery cell 3 or to facilitate the detachment of the conductive member 2 from the positive electrode 301 or the negative electrode 302, thereby interrupting the input or output of the battery cell 3.

[0047] In some embodiments provided by the present utility model, the conductive member 2 includes a conductive block 202, the conductive block 202 is arranged inside the connection assembly 1 and is used to contact the positive electrode 301 or the negative electrode 302 of the battery cell 3, and the pole column 201 is arranged outside the connection assembly 1, and the pole column 201 is connected to the conductive block 202. For example, the conductive block 202 is arranged inside the mounting seat 1011, the pole column 201 is arranged outside the mounting seat 1011, and the pole column 201 passes through the mounting seat 1011 and is connected to the conductive block 202.

[0048] In this embodiment, by arranging the conductive block 202 inside the connection assembly 1, it is convenient to make the conductive block 202 in close contact with the positive electrode 301 or the negative electrode 302 under the pressure of the connection assembly 1, reducing loose connection. By arranging the pole column 201 outside the connection assembly 1, it is convenient to connect the pole column 201 to the test equipment.

[0049] Optionally, the pole column 201 is arranged as a cylindrical structure, so that the clip of the test equipment can be clamped on the pole column 201.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A cell testing tooling, characterized in that, Comprising: A connecting component, which is arranged in an annular structure and is used for detachably sleeving around the outside of the battery cell to be tested; A conductive member, which is arranged on the connecting component and is used for contacting the positive or negative electrode of the battery cell. A pole column is arranged on the conductive member and is used for connecting with the testing device.

2. The cell testing tooling according to claim 1, wherein The connecting component includes a connecting member, a fusing member and a temperature switch; Wherein, both ends of the connecting member are connected by the fusing member so that the connecting member forms an annular structure that can be sleeved around the outside of the battery cell to be tested. The temperature switch is arranged on the connecting member and is used for detecting the temperature of the battery cell to be tested. The temperature switch can be closed when the preset temperature is reached. The fusing member is electrically connected to the temperature switch and is used for connecting to the power supply through the temperature switch.

3. The cell testing tooling according to claim 2, wherein The connecting component further includes a disassembling member. The fusing member is arranged at the first end of the connecting member. The disassembling member is connected to the fusing member and is detachably connected to the second end of the connecting member.

4. The cell testing tooling according to claim 3, wherein The disassembling member includes a hook, which is used for hooking on the second end of the connecting member.

5. The cell testing tooling according to claim 3, characterized in that, The disassembling member is threadedly connected, magnetically connected or connected by a magic tape to the second end of the connecting member.

6. The cell testing tooling according to claim 3, wherein, A clamping hole for the fusing member to pass through is arranged on the disassembling member.

7. The cell testing tooling according to claim 2, wherein The connecting component further includes a housing, which is connected to the first end of the connecting member. Both the fusing member and the temperature switch are arranged inside the housing.

8. The cell testing tooling according to claim 2, wherein The connecting member includes a mounting seat, a first connecting body and a second connecting body; Wherein, the conductive member is arranged on the mounting seat. The first connecting body and the second connecting body are respectively connected to both sides of the mounting seat. The first connecting body and the second connecting body are connected by the fusing member.

9. The cell testing tooling according to claim 8, wherein At least one of the first connecting body and the second connecting body is arranged as an elastic member.

10. The cell testing tooling according to any one of claims 1-9, characterized in that, The conductive member includes a conductive block, which is arranged inside the connecting component and is used for contacting the positive or negative electrode of the battery cell. The pole column is arranged outside the connecting component and is connected to the conductive block.

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