Battery test connecting piece

Abstract

The utility model provides a battery test connecting piece, comprising a connecting piece body having a first surface and a second surface opposite to each other; the first connecting part is connected with the connecting piece body, the first connecting part protrudes out of the first surface and extends in the first direction, and the first direction is the direction from the second surface to the first surface; wherein the first connecting part is provided with a matching cavity, the matching cavity is configured to be matched with a battery pole, and the first connecting part is configured to be detachably connected with the battery pole. The battery test connecting piece disclosed by the utility model is detachably connected with the battery pole, so that the test process is simplified, and other purposes of the tested battery are not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and particularly relates to a battery test connector. Background Art

[0002] During battery manufacturing, performance parameter tests are usually required, such as voltage, current, etc. Battery tests require the use of test connection plates to connect the test wire harness to the battery terminal to detect the relevant performance of the battery.

[0003] Currently, the test connection plate is usually welded to the battery terminal by laser welding to detect the relevant parameters of the battery. When welding for the first time on a new battery product, parameters for battery welding need to be provided additionally. The welding process is cumbersome, and there may also be cases of unqualified welding (NG) during the welding process, which affects other uses of the battery after testing and causes waste of resources. Summary of the Utility Model

[0004] The utility model provides a battery test connector, which is detachably connected to the battery terminal, simplifies the test process, and does not affect other uses of the battery after testing.

[0005] The utility model provides a battery test connector, which comprises:

[0006] A connector body having opposite first and second surfaces;

[0007] A first connection portion connected to the connector body, the first connection portion protruding from the first surface and extending in a first direction, the first direction being from the second surface towards the first surface;

[0008] Wherein, the first connection portion has a fitting cavity configured to cooperate with the battery terminal, and the first connection portion is configured to be detachably connected to the battery terminal.

[0009] In some embodiments, the first connection portion is in interference connection with the battery terminal.

[0010] In some embodiments, the cross-sectional area of the fitting cavity is smaller than the cross-sectional area of the battery terminal.

[0011] In some embodiments, along the first direction, the cross-sectional area of the fitting cavity decreases, and the cross-sectional area of the end of the fitting cavity far from the connector body is smaller than the cross-sectional area of the battery terminal.

[0012] In some embodiments, along the first direction, the first connecting portion has opposite first and second ends, and at least one opening is provided on the first connecting portion, and the opening extends from the second end towards the first end.

[0013] In some embodiments, the opening extends from the second end to the first end, and the opening penetrates the first connecting portion along the first direction.

[0014] In some embodiments, the connector body further includes a bending portion, and the bending portion is disposed between the connector body and the first connecting portion, and the bending portion is configured to connect the connector body and the first connecting portion.

[0015] In some embodiments, the battery test connector further includes a second connecting portion and / or a third connecting portion connected to the edge of the connector body. The third connecting portion is connected to the connector body, and the third connecting portion is provided with a second wire harness connection hole. Among them, the second connecting portion is provided with a first wire harness connection hole, and the third connecting portion is provided with a second wire harness connection hole.

[0016] In some embodiments, the second connecting portion and / or the third connecting portion are inclined with respect to the connector body, and the included angle between the second connecting portion and / or the third connecting portion and the connector body ranges from 30° to 90°.

[0017] In some embodiments, the first connecting portion and the connector body are of an integrally formed structure.

[0018] The present utility model provides a battery test connector, which includes a connector body and a first connecting portion connected to the connector body. The first connecting portion is used for detachably connecting with a battery pole. When battery testing is required, the battery test connector is connected to the battery pole through the first connecting portion for testing. After the test is completed, the battery test connector can be detached from the pole, and the performance and subsequent use of the test battery will not be affected. Using the battery test connector of the present application for battery testing can effectively avoid problems such as selection of welding parameters, long test waiting time, and waste of batteries after welding in the welding method. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1It is a schematic structural diagram of a battery test connector provided by an embodiment of the present utility model;

[0021] Figure 2 It is a side view of a battery test connector provided by an embodiment of the present utility model;

[0022] Figure 3a It is a schematic diagram before the assembly of the first connection part of a battery test connector and a battery pole column provided by an embodiment of the present utility model;

[0023] Figure 3b It is a schematic diagram after the assembly of the first connection part of a battery test connector and a battery pole column provided by an embodiment of the present utility model;

[0024] Figure 4 It is a side view of another battery test connector provided by an embodiment of the present utility model;

[0025] Figure 5 It is a schematic diagram of the first connection part of one of the battery test connectors provided by an embodiment of the present utility model;

[0026] Figure 6 It is a schematic diagram of the first connection part of one of the battery test connectors provided by an embodiment of the present utility model;

[0027] Figure 7 It is a schematic structural diagram of another battery test connector provided by an embodiment of the present utility model;

[0028] Figure 8 It is Figure 7 Another direction schematic diagram of a battery test connector provided. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present utility model. In addition, it should be understood that the specific implementation manners described herein are only used to illustrate and explain the present utility model, and are not used to limit the present utility model. In the present utility model, unless otherwise stated, the orientation terms such as "upper" and "lower" usually refer to the upper and lower in the actual use or working state of the device, specifically the drawing direction in the drawings; and "inner" and "outer" refer to the outline of the device.

[0030] Please refer to Figures 1-2, the present utility model provides a battery test connector 10, and the battery test connector 10 includes a connector body 100 and a first connection portion 200 connected to the connector body 100. The connector body 100 has opposite first surface 101 and second surface 102. The first connection portion 200 is connected to the connector body 100, the first connection portion 200 protrudes from the first surface 101 and extends along the first direction Z, and the first direction Z is the direction from the second surface 102 towards the first surface 101; wherein, the first connection portion 200 has a mating cavity 210, the mating cavity 210 is configured to cooperate with a battery pole, and the first connection portion 200 is configured to be detachably connected to the battery pole.

[0031] When the battery test connector 10 is connected to the battery, by passing the battery pole through the mating cavity 210, the battery pole is clamped between the inner side walls of the first connection portion 200 to achieve connection and fixation. At the same time, the inner side wall of the first connection portion 200 contacts the outer side wall of the battery pole, so that the battery test connector 10 and the battery pole can achieve electrical connection for testing. Since the first connection portion 200 and the battery pole are detachably connected, when the battery test is completed, the first connection portion 200 is pulled out from the battery pole, and the battery test connector 10 can be detached from the battery, and it will not cause damage to the tested battery and will not affect the subsequent application of the battery. Therefore, the battery test connector 10 of the present application adopts a detachable connection method, which can effectively simplify the test connection process, save the test preparation time, and will not cause waste of battery resources compared with the traditional welding method.

[0032] In some embodiments, the connector body 100 is provided with a through hole 110 penetrating the connector body 100 from the second surface 102 towards the first surface 101, and the mating cavity 210 is communicated with the through hole 110, so that when the battery test connector 10 is assembled to the pole, the pole penetrates out from the through hole 110, so that the battery test connector 10 is more firmly connected to the pole.

[0033] Specifically, please refer to Figure 1 and Figure 2 , the connector body 100 is provided with a through hole 110 penetrating the connector body 100 along the first direction Z. The connector body 100 is used to connect to a battery pole, and the shape of the through hole 110 matches the shape of the battery pole, so that the connector body 100 can be fixed to the battery pole.

[0034] The first connecting portion 200 has opposite first and second ends 201 and 202 along the first direction Z. The first end 201 is connected to the connector body 100, and the second end 202 extends in a direction away from the connector body 100. The first connecting portion 200 is provided with the mating cavity 210, and the mating cavity 210 communicates with the through hole 110. The first connecting portion 200 is configured to be detachably connected to the battery terminal post. Wherein, the shape of the mating cavity 210 matches the shape of the terminal post. For example, when the cross-section of the battery terminal post is rectangular, the cross-sectional shape of the mating cavity 210 is rectangular; when the cross-section of the battery terminal post is circular, the cross-sectional shape of the mating cavity 210 is circular. The shape of the mating cavity 210 can also be other regular or irregular shapes, which are not limited herein. In the present application, the height of the mating cavity 210 in the first direction Z is less than or equal to the height of the battery terminal post to ensure that the battery test connector 10 can be stably fixed to the battery terminal post and is not easily detached.

[0035] In some embodiments, an interference fit can be employed between the first connecting portion 200 and the battery terminal post to achieve the detachable connection between the battery test connector 10 and the battery. In this embodiment, the mating cavity 210 of the first connecting portion 200 and the battery terminal post are relatively fixed through interference fit. For example, after aligning the mating cavity 210 with the battery terminal post, the battery test connector 10 can be fixed to the battery terminal post by pressing or other means. The material of the first connecting portion 200 has a certain elasticity and can meet the requirements of interference fit. The material of the first connecting portion 200 can be metal, such as aluminum, but is not limited thereto. The material of the first connecting portion 200 can be the same as or different from the material of the connector body 100, which is not limited herein.

[0036] In some embodiments, before the first connecting portion 200 and the battery terminal post are assembled, the cross-sectional area of the mating cavity 210 is smaller than the cross-sectional area of the battery terminal post. When the first connecting portion 200 and the battery terminal post are assembled, the first connecting portion 200 encloses the battery terminal post through elastic deformation, and the connection is fixed by using the interference fit between the first connecting portion 200 and the battery terminal post.

[0037] Specifically, please refer to Figure 1 and Figure 2, the connecting member body 100 can be a connecting piece with a certain thickness, such as a metal piece. The through hole 110 is a through hole that penetrates the connecting piece along the thickness direction of the connecting piece, where the thickness direction of the connecting piece is the first direction Z. The first connecting portion 200 is arranged along the circumference of the through hole 110 to form a sleeve structure. The fitting cavity 210 communicates with the through hole 110, and the fitting cavity 210 and the through hole 110 have the same first central axis, and the first central axis extends along the first direction Z. Please refer to Figure 3a and Figure 3b , before the first connecting portion 200 is assembled with the battery pole column 500, first make the central axis of the battery pole column 500 coincide with the first central axis so that the battery pole column 500 is aligned with the fitting cavity 210. The distance from the inner side wall of the first connecting portion 200 to the first central axis is a, and the distance from the outer side wall of the battery pole column 500 to the first central axis is b, where b is slightly larger than a. Further, the difference range between b and a is 0.2 mm to 0.5 mm, that is, b - a = 0.2 mm to 0.5 mm, which also means that the cross-sectional area of the fitting cavity 210 is smaller than the cross-sectional area of the battery pole column 500. When an external force is applied to the first connecting portion 200 to press the battery pole column 500 into the fitting cavity 210, an interference fit is achieved between the first connecting portion 200 and the battery pole column 500. After the test is completed, the battery test connecting member 10 can be disassembled from the battery pole column 500.

[0038] It should be noted that when the cross-section of the pole column 500 is circular, the cross-section of the fitting cavity 210 is circular, and the inner diameter of the first connecting portion 200 is smaller than the outer diameter of the pole column. When the cross-section of the pole column 500 is rectangular, the cross-section of the fitting cavity 210 is rectangular, and the inner side walls of the first connecting portion 200 enclose a rectangle. Define the cross-section of the pole column 500 as the first rectangle, and the inner side walls of the first connecting portion 200 enclose the second rectangle. The length of the first rectangle is greater than the length of the second rectangle, or the width of the first rectangle is greater than the width of the second rectangle, or the length and width of the first rectangle are respectively greater than the length and width of the second rectangle, which is not limited here.

[0039] In some embodiments, please refer to Figure 4 , before the first connecting portion 200 is assembled with the battery pole column, along the first direction Z, the cross-sectional area of the fitting cavity 210 decreases, and the cross-sectional area of the end of the fitting cavity 210 away from the connecting member body 100 is smaller than the cross-sectional area of the battery pole column.

[0040] Specifically, the size of the fitting cavity 210 can gradually increase from the first end 201 to the second end 202, such that the size of the fitting cavity 210 at the second end 202 is slightly larger than the size of the fitting cavity 210 at the first end 201, facilitating the insertion of the battery terminal 500 into the second end 202 of the first connection portion 200, reducing the resistance during assembly, and facilitating the installation of the battery test connector 10 and the battery terminal 500. The size of the fitting cavity 210 at the first end 201 is slightly smaller than the size of the battery terminal 500 to ensure an interference fit between the first connection portion 200 and the battery terminal 500.

[0041] In this embodiment, referring to Figure 4 , the inner sidewall of the first connection portion 200 can be arc-shaped and specifically can be recessed toward the direction of the first central axis. The arc-shaped inner wall of the first connection portion 200 can deform during the interference fit process to better cooperate with the outer sidewall of the battery terminal 500.

[0042] In some embodiments, referring to Figures 5-6 , at least one opening 220 can be provided on the first connection portion 200 to increase the elastic deformation ability of the first connection portion 200, making it easier to assemble the battery test connector 10 and the battery terminal 500. Among them, the opening 220 can be strip-shaped and extend from the second end 202 toward the first end 201.

[0043] In some embodiments, referring to Figure 5 , the opening 220 can be provided at the second end 202 of the first connection portion 200 and extend from the second end 202 toward the first end 201. The length of the opening 220 in the first direction Z is less than the length of the first connection portion 200 in the first direction Z, that is, the opening 220 does not penetrate the first connection portion 200 in the first direction Z. One or more openings 220 can be provided on the first connection portion 200. When multiple openings 220 are provided, the multiple openings 220 can be evenly distributed along the circumferential direction of the first connection portion 200 to ensure the uniformity of the elastic deformation of the first connection portion 200.

[0044] In this embodiment, by providing the opening 220 at the second end 202 of the first connection portion 200, the elastic deformation energy of the second end 202 can be increased, the resistance when the battery terminal 500 is inserted into the second end 202 can be reduced, and the assembly of the battery test connector 10 and the battery terminal 500 can be facilitated.

[0045] In some embodiments, referring to Figure 6, the opening 220 can extend from the second end 202 to the first end 201, and the opening 220 penetrates the first connecting portion 200 along the first direction Z. For example, the length of the opening 220 in the first direction Z can be equal to the length of the first connecting portion 200 in the first direction Z. One or more openings 220 can be provided on the first connecting portion 200. When multiple openings 220 are provided, the multiple openings 220 can be evenly distributed along the circumferential direction of the first connecting portion 200, and the multiple openings 220 can divide the first connecting portion 200 into multiple first connecting sub-portions 230. For example, when 2 openings 220 are provided on the first connecting portion 200, the first connecting portion 200 is formed by enclosing the through hole 110 along the circumferential direction by 2 first connecting sub-portions 230, and the 2 first connecting sub-portions 230 are symmetrically arranged, and the battery pole 500 is clamped between the 2 first connecting sub-portions 230. For another example, please refer to Figures 6-8 , when 4 openings 220 are provided on the first connecting portion 200, the first connecting portion 200 is formed by enclosing the through hole 110 along the circumferential direction by 4 first connecting sub-portions 230, and the 4 first connecting sub-portions 230 can enclose a rectangular or circular ring structure, and the battery pole 500 is clamped between the 4 first connecting sub-portions 230. Further, please refer to Figures 7-8 , when the first connecting portion 200 is a polygon, the opening 220 can be provided at the junction of adjacent two sides to reduce the stress at the junction of adjacent two sides and increase the elastic deformation ability of the first connecting portion 200 at the same time. In this application, the number of the openings 220 provided on the first connecting portion 200 is not limited.

[0046] In some embodiments, please refer to Figure 7 , the connecting member body 100 further includes a bending portion 120, the bending portion 120 is provided between the connecting member body 100 and the first connecting portion 200, and the bending portion 120 is configured to connect the connecting member body 100 and the first connecting portion 200.

[0047] Specifically, the bending portion 120 is an arc surface, one end of which is connected to the connecting member body 100 and the other end is connected to the first connecting portion 200. On the one hand, it is convenient for process forming, and on the other hand, it can further increase the elastic deformation ability between the first connecting portion 200 and the connecting member body 100, which is beneficial to the interference fit connection.

[0048] In some embodiments, please refer to Figures 7-8, the first connecting portion 200 and the connector body 100 may be an integrally formed structure. For example, the first connecting portion 200 and the connector body 100 may be formed at one time by a sheet metal stamping process, and the curved bending portion 120 is formed between the first connecting portion 200 and the connector body 100. Among them, the material for forming the first connecting portion 200 and the connector body 100 may be aluminum, for example. The material aluminum has good ductility, is convenient for process forming, and is relatively economical. The material for forming the first connecting portion 200 and the connector body 100 may also be other metal materials, which are not limited herein.

[0049] In some embodiments, please refer to Figures 7-8 , the battery test connector 10 further includes a second connecting portion 300 connected to the edge of the connector body 100. A first wire harness connection hole 310 is provided on the second connecting portion 300. The first wire harness connection hole 310 is configured to be connected to at least a first test wire harness. Among them, the connector body 100 has a second direction X and a third direction Y. The second direction X and the third direction Y are perpendicular to each other and are respectively perpendicular to the first direction Z. The second connecting portion 300 may be connected to any one side of the connector body 100 in the second direction X or the third direction Y, which is not limited herein.

[0050] When performing battery testing, one end of the first test wire harness can be fixed at the first wire harness connection hole 310 by a bolt to achieve electrical connection with the second connecting portion 300. The other end of the first test wire harness is connected to an external test device, so as to realize the determination of the performance parameters of the battery by the external device. In the present application, the first wire harness connection hole 310 can also be connected to a second test wire harness, a third test wire harness, etc., that is, multiple different test wire harnesses can be connected at the first wire harness connection hole 310 to simultaneously measure multiple performance parameters of the battery. Among them, the first test wire harness, the second test wire harness, and the third test wire harness may be voltage test wires, current test wires, etc., but are not limited thereto.

[0051] In some embodiments, please refer to Figures 7-8, the battery test connector 10 further includes a third connection portion 400 connected to the edge of the connector body 100. A second wire harness connection hole 410 is provided on the third connection portion 400, and the second wire harness connection hole 410 is configured to be connected to a second test wire harness. The function of the third connection portion 400 is similar to that of the second connection portion 300, and is provided on different sides of the connector body 100 in the second direction X or the third direction Y. The first wire harness connection hole 310 and the second wire harness connection hole 410 can be respectively connected to different test wire harnesses to simultaneously test different performance parameters of the battery, avoiding interference between different wire harnesses when different wire harnesses are simultaneously connected to the second connection portion 300, which affects the test results. For example, the first test wire harness can be a voltage test wire, and the second test wire harness can be a current test wire, so that the voltage and current parameters of the battery can be simultaneously tested, and the voltage test wire and the current test wire will not interfere with each other.

[0052] In some embodiments, the second connection portion 300 and / or the third connection portion 400 are inclined with respect to the connector body 100, and the included angle between the second connection portion 300 and / or the third connection portion 400 and the connector body 100 ranges from 30° to 90°. Among them, the second connection portion 300 extends along a fourth direction M, the third connection portion 400 extends along a fifth direction N, the included angle between the fourth direction M and the second direction X or the third direction Y ranges from 30° to 90°, and the included angle between the fifth direction N and the second direction X or the third direction Y ranges from 30° to 90°. For example, the included angle between the fourth direction M and the second direction X or the third direction Y can be 45°, 60°, etc., and the included angle between the fifth direction N and the second direction X or the third direction Y can be 45°, 60°, etc. In the present application, the plane where the connector body 100 is located is parallel to the top cover plane of the battery, and the second connection portion 300 and / or the third connection portion 400 are located above the battery and are arranged at a certain angle with the top cover plane of the battery to avoid the test fixture on the top cover of the battery and prevent the second connection portion 300 and / or the third connection portion 400 from interfering with the test fixture, which affects the installation of the battery test connector 10.

[0053] In some embodiments, please refer to Figures 7-8, both the second connecting portion 300 and the third connecting portion 400 are inclined toward the side of the connecting member body 100 away from the first connecting portion 200, that is, the second connecting portion 300 and the third connecting portion 400 and the connecting member body 100 are on opposite sides of the first surface 101, so as to avoid interference in the spatial position between the second connecting portion 300 and the third connecting portion 400, or the test harness, etc. and the battery when the battery test connecting member 10 is assembled to the battery, which is not conducive to installation.

[0054] In some embodiments, the second connecting portion 300 and the third connecting portion 400 may be integrally formed with the connecting member body 100. For example, both the second connecting portion 300 and the third connecting portion 400 may be formed by bending the edge portion of the connecting member body 100 toward the side of the connecting member body 100 away from the first connecting portion 200.

[0055] The present utility model provides a battery test connecting member, which includes a connecting member body and a first connecting portion connected to the connecting member body, wherein the first connecting portion is used for detachably connecting with a battery pole column. When battery testing is required, the battery test connecting member is connected to the battery pole column through the first connecting portion for testing. After the test is completed, the battery test connecting member can be detached from the pole column, and the performance and subsequent use of the test battery will not be affected. Using the battery test connecting member of the present application for battery testing can effectively avoid problems such as the selection of welding parameters, long test waiting time, and waste of batteries after welding in the welding method.

[0056] The embodiments of the present utility model have been introduced in detail above. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those skilled in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A battery test connection piece, characterized in that Comprising: A connector body having opposite first and second surfaces; A first connection portion connected to the connector body, the first connection portion protruding from the first surface and extending in a first direction, the first direction being from the second surface towards the first surface; Wherein, the first connection portion has a mating cavity configured to mate with a battery pole, and the first connection portion is configured to be detachably connected to the battery pole.

2. The battery test connection member according to claim 1, wherein The first connection portion is in interference connection with the battery pole.

3. The battery test connecting member according to claim 2, characterized in that, The cross-sectional area of the mating cavity is smaller than the cross-sectional area of the battery pole.

4. The battery test connection piece according to claim 2, characterized in that Along the first direction, the cross-sectional area of the mating cavity decreases, and the cross-sectional area of the end of the mating cavity remote from the connector body is smaller than the cross-sectional area of the battery pole.

5. The battery test connection member according to claim 2, wherein Along the first direction, the first connection portion has opposite first and second ends, and at least one opening is provided on the first connection portion, the opening extending from the second end towards the first end.

6. The battery test connection member according to claim 5, wherein The opening extends from the second end to the first end, and the opening penetrates the first connection portion along the first direction.

7. The battery test connection member according to claim 6, wherein The connector body further includes a bending portion provided between the connector body and the first connection portion, the bending portion being configured to connect the connector body and the first connection portion.

8. The battery test connection member according to any one of claims 1-7, characterized in that, The battery test connector further includes a second connection portion and / or a third connection portion connected to the edge of the connector body, wherein, a first wire harness connection hole is provided on the second connection portion, and a second wire harness connection hole is provided on the third connection portion.

9. The battery test connection member according to claim 8, wherein, The second connection portion and / or the third connection portion is / are inclined with respect to the connector body, and the included angle between the second connection portion and / or the third connection portion and the connector body ranges from 30° to 90°.

10. The battery test connecting member according to any one of claims 1-7, characterized in that, The first connection portion and the connector body are of an integrally formed structure.

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