Battery cell test fixture and battery cell test fixture combination

Abstract

The utility model provides a cell test fixture and a cell test fixture combination, the cell test fixture comprises a clamping plate assembly, the clamping plate assembly comprises a first clamping plate and a second clamping plate, and the second clamping plate is arranged opposite to the first clamping plate in the height direction of the cell test fixture and is fixed on the first clamping plate. Wherein the first clamping plate and the second clamping plate are used for clamping the battery cell connecting piece, and the first clamping plate is used for being electrically connected to the test line group, so that the test line group is electrically connected to the battery cell connecting piece through the first clamping plate. In the battery cell test fixture provided by the embodiment of the utility model, the test line group is electrically connected with the battery cell connecting piece by taking the first clamping plate as a medium, so that the problem that the battery cell test is influenced by deformation or fracture of the battery cell connecting piece caused by pulling of the test line group due to direct connection of the test line group and the battery cell connecting piece is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a battery field, concretely relates to a battery cell test fixture and battery cell test fixture combination. BACKGROUND

[0002] In the process of testing the performance of the battery, the battery test fixture in the prior art usually fixes the power line and the battery connection sheet by bolts for testing, but such a structure often has the following problems in the testing process: the power line connected with the battery connection sheet is pulled by the power line due to the influence of gravity, so that the battery connection sheet is pulled, which causes the connection between the two to be disconnected, or the battery connection sheet is broken due to excessive pulling force, thereby affecting the testing of the battery. SUMMARY

[0003] The embodiment of the utility model provides a battery cell test fixture and battery cell test fixture combination for solving the problem of the battery connection sheet affected by the pulling in the prior art.

[0004] In a first aspect, the embodiment of the utility model provides a battery cell test fixture, which comprises:

[0005] The clamping plate assembly comprises a first clamping plate and a second clamping plate, the second clamping plate is arranged opposite to the first clamping plate in the height direction of the battery cell test fixture, and is fixed to the first clamping plate.

[0006] The first clamping plate and the second clamping plate are used for clamping the battery connection sheet, and the first clamping plate is used for electrically connecting the test line group, so that the test line group is electrically connected to the battery connection sheet through the first clamping plate.

[0007] In an embodiment, the first clamping plate comprises a clamping plate fixed part opposite to the second clamping plate and a clamping plate extension part electrically connected to the clamping plate fixed part; the second clamping plate is detachably fixed to the clamping plate fixed part to clamp the battery connection sheet, and the clamping plate extension part is used for electrically connecting the test line group, so that the test line group is electrically connected to the battery connection sheet through the clamping plate extension part and the clamping plate fixed part.

[0008] In an embodiment, the clamping plate fixed part is provided with a positioning protrusion, and the second clamping plate is provided with a clamping plate positioning hole for accommodating the positioning protrusion.

[0009] In an embodiment, the size of the clamping plate fixed part in the length direction of the first clamping plate is greater than the size of the clamping plate extension part in the length direction.

[0010] In an embodiment, the battery cell test fixture further comprises a base assembly, and the base assembly comprises at least one fixed plate extending in the height direction, and the clamping plate assembly is adjustably fixed to the at least one fixed plate in the height direction.

[0011] In an embodiment, each fixing plate is provided with an adjusting slot extending in the height direction, and the adjusting slot is used for passing through the adjusting fixing member to be detachably fixed to the clamping plate assembly.

[0012] In an embodiment, the side wall of the adjusting slot is provided with a plurality of limiting grooves in the height direction, and the limiting grooves are used for limiting the adjusting fixing member.

[0013] In an embodiment, the base assembly further comprises a support plate, and the clamping plate assembly further comprises a clamping bottom plate, and the first clamping plate and the second clamping plate are located above the clamping bottom plate; wherein the adjusting fixing member passes through the adjusting slot and is detachably fixed to the support plate, and the clamping bottom plate is fixed to the support plate.

[0014] In an embodiment, the clamping bottom plate is fixed to the support plate through a bottom plate fixing member, and the bottom plate fixing member comprises a head portion close to the first clamping plate in the height direction, and the head portion is embedded into the clamping bottom plate.

[0015] In a second aspect, the embodiment of the utility model further provides a battery cell test fixture combination, comprising two battery cell test fixtures opposite to each other, and each battery cell test fixture is the battery cell test fixture as described in the first aspect.

[0016] The utility model provides a kind of battery cell test fixture and battery cell test fixture combination, which includes clamping plate assembly, clamping plate assembly includes first clamping plate and second clamping plate, second clamping plate is oppositely arranged with first clamping plate in the height direction of battery cell test fixture, and it is fixed to first clamping plate. Among them, first clamping plate and second clamping plate are used to clamp battery cell connecting piece, and first clamping plate is used to be electrically connected to test line group, so that test line group is electrically connected to battery cell connecting piece by first clamping plate.In the battery cell test fixture provided in the embodiment of the utility model, test line group is electrically connected to battery cell connecting piece by first clamping plate as medium, compared with the battery test fixture in the prior art, power line is fixed to battery cell connecting piece to test by bolt, and the test line group in the embodiment of the utility model is electrically connected to battery cell connecting piece by first clamping plate as medium, to avoid the problem that battery cell connecting piece is affected by test line group and battery cell connecting piece directly connected to cause battery cell connecting piece to be pulled. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creating labor on the premise.

[0018] Figure 1 It is the structural schematic diagram of battery cell test fixture provided in the embodiment of the utility model;

[0019] Figure 2 It isFigure 1 Structure diagram of middle clamping plate assembly;

[0020] Figure 3 Is Figure 1 Side view of middle fixed plate;

[0021] Figure 4 Is Figure 1 Structure diagram of middle support plate;

[0022] Figure 5 Structure diagram of battery cell test fixture combination provided by the embodiment of the utility model;

[0023] Explanation of reference signs:

[0024] 100, battery cell test fixture; 110, first clamping plate; 111, clamping plate fixed part; 112, clamping plate extension part; 113, clamping plate positioning hole; 120, second clamping plate; 121, positioning protrusion; 130, fixed plate; 131, adjusting groove; 132, limiting groove; 141, clamping bottom plate; 150, support plate; 200, battery cell connecting piece; 300, test line group; 400, battery cell test fixture combination; 500, battery cell. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model. In addition, it should be understood that the specific embodiments described herein are only used for illustrating and explaining the utility model, and are not used for limiting the utility model. In the utility model, the orientation words such as "upper" and "lower" are generally used for indicating the upper and lower in the actual use or working state of the device, and the specific is the drawing direction in the drawings; and "inner" and "outer" are used for the contour of the device.

[0026] In order to solve the problem that the battery test fixture in the related art is pulled by the power line, the battery cell connecting piece is damaged or the battery cell connecting piece and the power line are not connected stably, and finally the battery cell test is affected, the embodiment of the utility model provides a battery cell test fixture 100. Please refer to Figure 1 , Figure 1is a structural schematic view of the battery cell testing fixture 100, the battery cell testing fixture 100 comprises a clamping plate assembly, wherein the clamping plate assembly comprises a first clamping plate 110 and a second clamping plate 120, the second clamping plate 120 is arranged opposite to the first clamping plate 110 in the height direction of the battery cell testing fixture 100, and the second clamping plate 120 is fixed to the first clamping plate 110, so that the battery cell connecting sheet 200 (please refer to Figure 5 ) can be clamped between the first clamping plate 110 and the second clamping plate 120. In addition, the first clamping plate 110 is electrically connected to the test line group 300 (please refer to Figure 5 ), and the test line group 300 is electrically connected to the battery cell connecting sheet 200 through the first clamping plate 110. The test line group 300 can be a power line, a voltage collection line, etc., the power line is mainly used for transmitting power from an external power supply to a battery for testing. The voltage collection line is mainly used for monitoring and recording the voltage change of the battery during the testing process. In an embodiment provided by the utility model, the clamping plate extension part has a power mounting hole and two voltage mounting holes, the power mounting hole is located between the two voltage mounting holes in the length direction, the power mounting hole is used for allowing a power fixing member to pass through to fix the power line on the extension part, and the voltage mounting hole is used for allowing a voltage fixing member to pass through to fix the voltage collection line on the extension part.

[0027] Specifically, during the testing process of the battery cell, one end of the test line group 300 is electrically connected to the first clamping plate 110, and the other end of the battery cell connecting sheet 200 is electrically connected to the first clamping plate 110, so that the test line group 300 and the battery cell connecting sheet 200 are not directly connected, but are electrically connected through the first clamping plate 110 as a medium. Compared with the battery testing fixture in the related art which fixes the power line and the battery cell connecting sheet 200 by using a bolt for testing, the test line group 300 in the embodiment is electrically connected to the battery cell connecting sheet 200 through the first clamping plate 110 as a medium, which, on the one hand, avoids the direct connection of the test line group 300 and the battery cell connecting sheet 200, which may cause damage to the battery cell connecting sheet 200 or unstable connection of the battery cell connecting sheet 200 and the power line, and finally affects the battery cell testing, and on the other hand, the battery cell connecting sheet 200 is fixed by clamping in the embodiment, so that a hole does not need to be punched on the battery cell connecting sheet 200 to place a bolt, and therefore the problem that different battery cell bolt holes have different sizes and need to be matched with different bolts, nuts and gaskets is avoided.

[0028] In some embodiments, please refer to Figure 1 and Figure 2 , Figure 2 is Figure 1The structure diagram of the middle clamp assembly is shown. The first clamp 110 comprises a clamp fixing part 111 and a clamp extension part 112. The clamp fixing part 111 is arranged opposite to the second clamp 120, and the clamp extension part 112 is extended from one end of the clamp fixing part 111. The second clamp 120 is detachably fixed to the clamp fixing part 111, so that the battery cell connecting sheet 200 can be clamped between the second clamp 120 and the clamp fixing part 111. The clamp extension part 112 is used for electrically connecting the test wire group 300, so that the test wire group 300 is electrically connected to the battery cell connecting sheet 200 through the clamp extension part 112 and the clamp fixing part 111.

[0029] Specifically, the second clamp 120 and the clamp fixing part 111 are provided with clamp fixing holes opposite to each other. The fixing holes on the second clamp 120 and the clamp fixing part 111 are used for the clamp fixing part to pass through, so as to realize that the second clamp 120 is detachably fixed to the clamp fixing part 111. The clamp fixing part can be a bolt or other elements that can be matched with the clamp fixing hole. The distance between the second clamp 120 and the clamp fixing part 111 can be flexibly adjusted by using the clamp fixing part, so that the second clamp 120 and the clamp fixing part 111 can stably clamp the battery cell connecting sheet 200 therebetween, and the battery cell connecting sheet 200 will not be damaged due to excessive clamping force.

[0030] In some embodiments, please refer to Figure 2 The clamp fixing part 111 is provided with a positioning protrusion 121, and the second clamp 120 is provided with a clamp positioning hole 113 at the opposite position for accommodating the positioning protrusion 121. In this embodiment, by arranging the positioning protrusion 121 on the clamp fixing part 111 and arranging the clamp positioning hole 113 on the second clamp 120, the second clamp 120 can be quickly aligned with the clamp fixing part 111 when the second clamp 120 is fixed to the clamp fixing part 111, so as to realize quick and accurate alignment and fixing.

[0031] In an embodiment of the utility model, the positioning protrusion 121 comprises a hemispherical structure close to the second clamp 120 and a cylindrical structure away from the second clamp 120 and connected to the clamp fixing part 111. In the process of accommodating the positioning protrusion 121 in the clamp positioning hole 113, the hemispherical structure is designed to be easily inserted into the clamp positioning hole 113 during installation, and then the cylindrical structure is clamped in the clamp positioning hole 113, so that the second clamp 120 can be reliably fixed to the clamp fixing part 111. The advantage of this structure design is that it simplifies the installation process of the second clamp 120, reduces the difficulty of aligning the second clamp 120 with the clamp fixing part 111 during installation, and improves the installation efficiency. At the same time, this structure also enhances the connection stability between the clamp fixing part 111 and the second clamp 120, avoiding the problem of unstable test caused by inaccurate alignment or unreliable fixation.

[0032] It is easy to understand that the positioning protrusion 121 can also be arranged on the second clamping plate 120, and correspondingly, the clamping plate positioning hole 113 is arranged on the clamping plate fixing part 111. This structure can still achieve the effect of quickly positioning the element during the installation process.

[0033] In some embodiments, the size of the clamping plate fixing part in the length direction of the first clamping plate is greater than the size of the clamping plate extension part in the length direction.

[0034] In some embodiments, referring to Figure 1 , the battery cell testing fixture 100 further comprises a base assembly. The base assembly comprises at least one fixing plate 130 extending in the height direction of the battery cell testing fixture 100, and the clamping plate assembly can be fixed to the at least one fixing plate 130 in the height direction of the battery cell testing fixture 100 in a height-adjustable manner. Among them, because the clamping plate assembly is detachably installed at different positions of the fixing plate 130 in the height direction of the battery cell testing fixture 100, when the position of the clamping plate assembly relative to the fixing plate 130 changes, the relative position between the battery cell connecting sheet 200 clamped by the clamping plate assembly and the fixing plate 130 will also change. When the user needs to test battery cells of different sizes, the height of the battery cell connecting sheet 200 can be controlled by moving the clamping plate assembly, so that the battery cell connecting sheet 200 can adapt to battery cells of different sizes, thereby meeting the testing requirements. This design ensures the flexibility and adaptability of the clamping plate assembly, so that the battery cell testing fixture 100 can cover battery cells of various sizes.

[0035] In some embodiments, referring to Figure 3 , Figure 3 is Figure 1 a side view of the fixing plate 130 in the battery cell testing fixture 100. Each fixing plate 130 is provided with an adjusting groove 131 extending in the height direction of the battery cell testing fixture 100, and the adjusting groove 131 is used for the adjusting fixing member to pass through to realize detachable fixation to the clamping plate assembly. In this embodiment, by adjusting the fixing member to fix the clamping plate assembly at different positions of the adjusting groove 131, the battery cell testing fixture 100 can test battery cells of different sizes. In an embodiment provided by the present application, each fixing plate 130 is provided with two adjusting grooves 131 side by side in the width direction, and the clamping plate assembly is fixed to the fixing plate 130 by at least two adjusting fixing members passing through the two adjusting grooves 131 respectively, so that the clamping plate assembly is fixed in position during the battery cell testing process. It is not easy to tilt or move, and it is not easy to affect the battery cell testing.

[0036] In some embodiments, referring to Figure 3The side wall of the adjusting groove 131 on the fixing plate 130 is provided with a plurality of limiting grooves 132 in the height direction of the battery cell test fixture 100, and the plurality of limiting grooves 132 are used for supporting and limiting the adjusting fixing part, so as to prevent the adjusting fixing part from sliding in the height direction of the battery cell test fixture 100, thereby improving the stability of the overall structure of the battery cell test fixture 100. In an embodiment of the utility model, the normal projection of the side wall of each limiting groove 132 on the fixing plate 130 on the fixing plate 130 is in a semicircular shape. The semicircular design enables the adjusting fixing part to be accurately clamped in the limiting grooves 132, thereby providing a more stable and reliable limiting effect. Through the cooperation of the limiting grooves 132 and the adjusting fixing part, the stability of the overall structure of the battery cell test fixture 100 is ensured, and the height of the clamping piece assembly can be conveniently replaced when the battery cell test fixture 100 faces different test requirements.

[0037] In some embodiments, referring to Figure 1 、 Figure 4 , Figure 4 is Figure 1 a structural diagram of the support plate. The base assembly further comprises a support plate 150, and the clamping plate assembly further comprises a clamping bottom plate 141, the first clamping plate 110 and the second clamping plate 120 are located above the clamping bottom plate 141, and the first clamping plate 110 is located between the clamping bottom plate 141 and the second clamping plate 120, the adjusting fixing part passes through the adjusting groove 131 and is detachably fixed to the support plate 150, the clamping bottom plate 141 is fixed to the support plate 150, and the clamping bottom plate 141 is used for supporting the first clamping plate 110 and the second clamping plate 120. Wherein, the support plate 150 comprises a first part extending in the height direction of the battery cell test fixture 100 and a second part perpendicular to the extension direction of the first part, the first part is detachably fixed to the fixing plate 130, and the second part is used for supporting the clamping plate assembly.

[0038] In some embodiments, the clamping bottom plate 141 is fixed to the support plate 150 by a bottom plate fixing part, and the bottom plate fixing part comprises a head portion close to the first clamping plate 110 in the height direction of the battery cell test fixture 100, and the head portion is embedded in the clamping bottom plate 141. Specifically, the clamping bottom plate 141 is provided with a clamping bottom plate 141 fixing hole for the bottom plate fixing part to pass through, and after the bottom plate fixing part fixes the clamping bottom plate 141 to the support plate 150, one end of the bottom plate fixing part close to the first clamping plate 110 is located in the fixing hole. This structure design can ensure that the bottom plate fixing part avoids contact with other metal parts during element assembly, facilitating installation. It is easy to understand that the clamping plate fixing part and the clamping plate fixing hole for fixing the first clamping plate 110 to the clamping bottom plate 141 can also be designed in this structure, that is, one end of the clamping plate fixing part close to the second clamping plate 120 is located in the clamping plate fixing hole.

[0039] The utility model provides a kind of electric core test fixture 100, the electric core test fixture 100 includes clamping plate assembly, clamping plate assembly includes first clamping plate 110 and second clamping plate 120, second clamping plate 120 is oppositely arranged with first clamping plate 110 in the height direction of electric core test fixture 100, and it is fixed to first clamping plate 110. Among them, first clamping plate 110 and second clamping plate 120 are used to hold electric core connecting piece 200, first clamping plate 110 is used to be electrically connected to test line group 300, to make test line group 300 pass through first clamping plate 110 electrically connected to electric core connecting piece 200. In the electric core test fixture 100 provided in the utility model embodiment, test line group 300 is electrically connected with electric core connecting piece 200 by first clamping plate 110 as medium, avoids the problem that electric core connecting piece 200 is deformed or fractured by test line group 300 and is pulled to test line group 300, and then affects electric core test, which is caused by the direct connection of test line group 300 and electric core connecting piece 200.

[0040] Please refer to Figure 1 And Figure 5 , Figure 5 It is the structure schematic view of electric core test fixture combination provided in the utility model embodiment, and the utility model embodiment further provides a kind of electric core test fixture combination 400, the electric core test fixture combination 400 includes two oppositely arranged electric core test fixtures 100, two electric core test fixtures 100 respectively hold one electric core connecting piece 200, and each electric core connecting piece 200 is connected to the positive pole column and negative pole column of electric core by welding etc., to realize the electrical connection of electric core connecting piece 200 and electric core. Electric core connecting piece 200 is held between first clamping piece 110 and second clamping piece 120 in electric core test fixture 100, avoids the problem that electric core connecting piece 200 and test line group 300 are not contacted in the test process of relevant art, and also avoids the problem that electric core connecting piece is damaged by the pulling of test line group 300.

[0041] In the test process, two electric core connecting pieces 200 are electrically connected with the positive and negative pole column of electric core 500 respectively, then, through test line group 300 electrically connected with each electric core test fixture 100, the charge and discharge test of electric core 500 is carried out. Test line group 300 is electrically connected with electric core test fixture 100 to carry out charging and / or discharging operation, while measuring and recording the voltage, current and other key data of electric core, to complete the test process of electric core.

[0042] The above has carried out the detailed introduction to the embodiment of the utility model, the principle and implementation mode of the utility model have been described in this article by applying specific examples, the above embodiment explanation is only for helping understanding the method and its core thought of the utility model; simultaneously, for the technical personnel in the art, according to the thought of the utility model, there will be changes in specific implementation mode and application range, and the above is described, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. An electric cell test fixture, characterized by, The application relates to a battery cell testing fixture. The first clamping plate and the second clamping plate are used for clamping a battery cell connecting sheet, and the first clamping plate is electrically connected to a testing wire group so that the testing wire group is electrically connected to the battery cell connecting sheet through the first clamping plate. The first clamping plate comprises a clamping plate fixing part opposite to the second clamping plate and a clamping plate extension part electrically connected to the clamping plate fixing part; the second clamping plate is detachably fixed to the clamping plate fixing part to clamp the battery cell connecting sheet, and the clamping plate extension part is electrically connected to the testing wire group so that the testing wire group is electrically connected to the battery cell connecting sheet through the clamping plate extension part and the clamping plate fixing part.

2. The cell test fixture of claim 1, wherein, The clamping plate fixing part is provided with a positioning protrusion, and the second clamping plate is provided with a clamping plate positioning hole for accommodating the positioning protrusion.

3. The cell test fixture of claim 2, wherein, The size of the clamping plate fixing part in the length direction of the first clamping plate is greater than the size of the clamping plate extension part in the length direction.

4. The cell test fixture of claim 2, wherein, The base assembly comprises at least one fixing plate extending in the height direction, and the clamping plate assembly is adjustably fixed to the at least one fixing plate in the height direction.

5. The cell test fixture of claim 1, wherein, Each fixing plate is provided with an adjusting groove extending in the height direction, and the adjusting groove is used for passing an adjusting fixing member to be detachably fixed to the clamping plate assembly.

6. The cell test fixture of claim 5, wherein, The side wall of the adjusting groove is provided with a plurality of limiting grooves in the height direction, and the limiting grooves are used for limiting the adjusting fixing member.

7. The cell test fixture of claim 6, wherein, The base assembly further comprises a support plate, and the clamping plate assembly further comprises a clamping bottom plate, and the first clamping plate and the second clamping plate are located on the clamping bottom plate; the adjusting fixing member passes through the adjusting groove and is detachably fixed to the support plate, and the clamping bottom plate is fixed to the support plate.

8. The cell test fixture of claim 6, wherein, The clamping bottom plate is fixed to the support plate through a bottom plate fixing member, and the bottom plate fixing member comprises a head part close to the first clamping plate in the height direction, and the head part is embedded in the clamping bottom plate.

9. The cell test fixture of claim 8, wherein, Each battery cell testing fixture is the battery cell testing fixture as claimed in any one of claims 1-9.

10. A battery cell test fixture assembly comprising two opposing battery cell test fixtures, wherein, ​

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