Battery clamping mechanism

Abstract

The utility model relates to a battery clamping mechanism, the battery clamping mechanism comprises two clamping groups which are oppositely arranged and used for clamping a battery, each clamping group comprises at least two clamping pieces, each clamping piece is provided with a convex part and / or a concave part, the convex part on one clamping piece is used for being inserted into the concave part on the other clamping piece in a shape matched mode, and the convex part on the other clamping piece is used for being inserted into the concave part on the other clamping piece. The battery clamping mechanism further comprises a first fastening structure for fixing the two clamping sets in the first direction and a second fastening structure for fixing the convex part of one clamping piece in the concave part of the other clamping piece in the second direction, the first direction is the opposite direction of the two clamping sets, and the second direction is the direction perpendicular to the inserting connection direction of the concave part and the convex part. In each clamping group, through the modularized splicing design, the single length of the clamping piece is reduced, so that the thermal expansion force of the clamping piece is reduced, the deformation of the clamping piece at high temperature is avoided, the uniform distribution of the constraining force of each clamping piece on the battery is ensured, and the accuracy of the battery cell test is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery clamping, and in particular, to a battery clamping mechanism. Background Art

[0002] With the advancement of energy transformation and the rapid development of renewable energy, energy storage batteries have become the core design of large-scale energy storage systems. Among them, blade cells have great application prospects in energy storage batteries due to their advantages such as thermal stability, low cost, high energy density, and high safety performance.

[0003] As the requirements for battery safety become higher and higher, battery testing becomes more and more important. When testing batteries, it is usually necessary to use a fixture to clamp the battery to simulate the actual use of the battery cell in the energy storage product, and at the same time apply a certain restraint force to the battery cell to improve the accuracy of the battery cell test.

[0004] In the related art, it is difficult for the clamping plates in the same clamping mechanism to meet the clamping requirements of battery cells of different lengths. Utility Model Content

[0005] An object of the present disclosure is to provide a battery clamping mechanism to at least partially solve the problems existing in the related art.

[0006] In order to achieve the above-mentioned purpose, the present disclosure provides a battery clamping mechanism, including two groups of clamping groups arranged opposite to each other for clamping batteries, each group of the clamping groups includes at least two clamping members, each of the clamping members is formed with a convex portion and / or a concave portion, and the convex portion on one of the clamping members is used to be plugged in with the concave portion on the other clamping member in a shape matching, wherein the battery clamping mechanism also includes a first fastening structure for fixing the two groups of the clamping groups along a first direction and a second fastening structure for fixing the convex portion of one of the clamping members in the concave portion of the other clamping member along a second direction, the first direction is the relative direction of the two groups of the clamping groups, and the second direction is perpendicular to the direction of plugging of the concave portion and the convex portion.

[0007] Optionally, the battery clamping mechanism further comprises two side bars, and the two side bars are used to be arranged on opposite sides of the battery.

[0008] Optionally, an outer side of the side strip away from the battery is aligned with an outer side of the clamping group along the first direction.

[0009] Optionally, a first mounting hole with an axis extending along the first direction is formed on the clamping member, a second mounting hole coaxially arranged with the first mounting hole is formed on the side bar, and the first fastening structure can pass through the first mounting hole and the second mounting hole.

[0010] Optionally, each of the clamping members is provided with a plurality of the first mounting holes, the plurality of the first mounting holes are distributed at intervals in the circumferential direction of the clamping member, and the number of the second mounting holes is plural and they are arranged in one-to-one correspondence with the plurality of the first mounting holes.

[0011] Optionally, third mounting holes are provided on both sides of the convex portion and both sides of the concave portion in the second direction, and the second fastening structure can penetrate the third mounting holes on both sides of the clamp in the second direction.

[0012] Optionally, the at least two clamping members include a first clamping member, a second clamping member and at least one third clamping member inserted between the first clamping member and the second clamping member, the first clamping member has the convex portion formed at one end, the second clamping member has the concave portion formed at one end, the third clamping member has the concave portion formed at one end, and the convex portion formed at the other end.

[0013] Optionally, one end of the first clamping member away from the third clamping member is configured as a plane, and one end of the second clamping member away from the third clamping member is configured as a plane.

[0014] Optionally, the end of the clamping member where the recess is formed is U-shaped.

[0015] Optionally, two side walls of the U-shape are opposite to each other in the second direction, or two side walls of the U-shape are opposite to each other in the first direction.

[0016] Through the above technical scheme, the battery clamping mechanism provided by the embodiment of the present disclosure includes two groups of clamping groups arranged opposite to each other, each clamping group includes at least two clamping members, and the user selects the number of clamping members in each clamping group according to the length of the battery. The second fastening structure passes through the convex part of one clamping member and the concave part of another clamping member to achieve plug-in connection between the clamping members in the clamping group. The first fastening structure passes through the two clamping groups along the first direction to achieve detachable connection between the two clamping groups, thereby achieving clamping and fixing of batteries of different lengths, and improving the scope of application of the battery clamping mechanism. Through this modular splicing design in each clamping group, the single length of the clamping member is reduced, thereby reducing the thermal expansion force of the clamping member, avoiding deformation of the clamping member at high temperature, ensuring the uniform distribution of the restraining force of each clamping member on the battery, and improving the accuracy of the battery cell test.

[0017] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0019] Figure 1 is a schematic diagram of a battery clamping mechanism according to an exemplary embodiment of the present disclosure.

[0020] Figure 2 is an exploded view of a battery clamping mechanism according to an exemplary embodiment of the present disclosure.

[0021] Figure 3 is a schematic diagram of a clamping group according to an exemplary embodiment of the present disclosure.

[0022] Figure 4 is a schematic diagram showing a partial structure of a clamping group according to an exemplary embodiment of the present disclosure.

[0023] Figure 5 is a schematic diagram showing a partial structure of a battery clamping mechanism according to an exemplary embodiment of the present disclosure.

[0024] Figure 6 is a schematic diagram showing a partial structure of a battery clamping mechanism according to another exemplary embodiment of the present disclosure.

[0025] Description of Reference Numerals

[0026] 10. Battery; 100. Clamping group; 110. Clamping member; 111. Protrusion; 112. Recess; 113. First mounting hole; 114. Third mounting hole; 120. First clamping sub-member; 130. Second clamping sub-member; 140. Third clamping sub-member; 200. Side strip; 210. Second mounting hole. DETAILED DESCRIPTION

[0027] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0028] In the present disclosure, unless otherwise stated, directional terms such as "upper, lower, vertical" are defined according to the use direction of the battery clamping mechanism, and "inside, outside" are defined according to the contours of the corresponding components. In addition, when the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0029] See also Figures 1 to 4A battery clamping mechanism provided by an embodiment of the present disclosure includes two clamping groups 100 arranged opposite to each other for clamping a battery 10. Each clamping group 100 includes at least two clamping members 110. For example, each clamping group 100 may include three, four, five or more clamping members 110. The user may select the number of clamping members 110 in each clamping group 100 according to the length of the battery 10. No specific limitation is made here. A convex portion 111 and / or a concave portion 112 is formed on each clamping member 110. For example, only a convex portion 111 may be formed on at least one clamping member 110, a concave portion 112 may be formed on at least one clamping member 110, or both a convex portion 111 and a concave portion 112 may be formed on some clamping members 110. And the convex portion 111 on one clamping member 110 is used to be plugged in with the concave portion 112 on the other clamping member 110 in a shape matching, wherein the battery clamping mechanism also includes a first fastening structure for fixing the two clamping groups 100 along a first direction and a second fastening structure for fixing the convex portion 111 of one clamping member 110 in the concave portion 112 of the other clamping member 110 along a second direction. The first direction is the relative direction of the two clamping groups 100, and the second direction is a direction perpendicular to the plugging direction of the concave portion 112 and the convex portion 111. The first fastening structure and the second fastening structure can both be bolts, or can be studs, screws or other components that can play a fastening role.

[0030] In this embodiment, the battery 10 may be a bare cell (battery cell) or an assembled battery.

[0031] It can be understood that the battery clamping mechanism provided by the embodiment of the present disclosure includes two groups of clamping groups arranged opposite to each other, each clamping group includes at least two clamping members, and the user can select the number of clamping members 110 in each clamping group 100 according to the length of the battery. The second fastening structure penetrates the convex portion 111 of one clamping member 110 and the concave portion 112 of another clamping member 110 to achieve plug-in connection between the clamping members 110 in the clamping group 100, and the first fastening structure penetrates the two clamping groups 100 along the first direction to achieve detachable connection between the two clamping groups 100, thereby achieving clamping and fixing of batteries 10 of different lengths, and improving the scope of application of the battery clamping mechanism. Through this modular splicing design in each clamping group 100, the monomer length of the clamping member 110 is reduced, thereby reducing the thermal expansion force of the clamping member 110, avoiding deformation of the clamping member at high temperature, ensuring the uniform distribution of the restraining force of each clamping member 110 on the battery 10, and improving the accuracy of the battery cell test.

[0032] In another embodiment, the first fastening structure may include a buckle, and the two clamping groups 100 may be connected by a buckle.

[0033] In one embodiment, see Figure 2The battery clamping mechanism may also include two side bars 200, which are used to be arranged on opposite sides of the battery 10. The two side bars 200 are arranged to prevent the two sides of the battery 10 from directly contacting the external environment, thereby ensuring that the battery 10 is not damaged; and to limit the position of the battery 10, thereby preventing it from moving left and right between the two clamping groups 100, thereby ensuring the clamping effect, that is, ensuring that the restraining force on the left and right sides of the battery 10 is evenly distributed. Among them, the height of the side bar 200 along the first direction may be the same as the height of the battery 10 along the first direction, thereby preventing the side bar 200 from being too small in height, thereby causing the clamping force of the clamping group 100 to be large and damaging the battery 10, and preventing the side bar 200 from being too large in height, thereby causing the clamping force of the clamping group 100 to be small and unable to stably clamp the battery 10. Further, referring to Figure 1 The outer side of the side bar 200 away from the battery 10 and the outer side of the clamping group 100 can be aligned along the first direction to prevent the side bar 200 from extending outward and occupying external space.

[0034] In the embodiment of the present disclosure, the side bar 200 can be fixed between the two clamping groups 100 under the clamping force of the two opposite clamping groups 100, or the side bar 200 can be connected to the clamping group 100 through a fastening structure to further ensure the stability of the position of the side bar 200. For example, in one embodiment, refer to Figures 1 to 3 A first mounting hole 113 with an axis extending along a first direction may be formed on the clamping member 110, and a second mounting hole 210 coaxially arranged with the first mounting hole 113 may be formed on the side bar 200. The first fastening structure can penetrate the first mounting hole 113 and the second mounting hole 210. The two side bars 200 can be detachably fixed between the two clamping groups 100 by using bolts, and the same fastening structure can be shared, thereby simplifying the structure.

[0035] In one embodiment, each clamping member 110 may be provided with a plurality of first mounting holes 113, and the plurality of first mounting holes 113 may be distributed at intervals in the circumferential direction of the clamping member 110. The number of second mounting holes 210 may be multiple, and they are arranged in a one-to-one correspondence with the plurality of first mounting holes 113. A plurality of first fastening structures may be provided, and they are arranged in a one-to-one correspondence with the plurality of first mounting holes 113 and the plurality of second mounting holes 210. By using a plurality of first fastening structures, the side bar 200 and the two clamping groups 100 may be firmly fixed together, and each first fastening structure may be a bolt of the same type. A plurality of fastening structures that play a role in strengthening the connection of the plurality of clamping members 110 are provided to ensure a uniform distribution of the restraining force on the battery 10, thereby improving the accuracy of the battery cell test.

[0036] In this embodiment, four first mounting holes 113 can be provided on each clamping member 110. Of course, in other embodiments, the number of first mounting holes 113 on each clamping member 110 can also be two, three, five or more. The specific number of first mounting holes 113 can be selected according to actual usage, and no specific limitation is made here.

[0037] In another embodiment, the side strip 200 and the two clamping groups 100 may be fixed by gluing.

[0038] In one embodiment, see Figures 1 to 4 The two sides of the convex portion 111 opposite to each other along the second direction and the two sides of the concave portion 112 opposite to each other along the second direction may be provided with third mounting holes 114, and the second fastening structure can penetrate the third mounting holes 114 on the two sides of the clamping member 110 opposite to each other along the second direction, thereby achieving stable fixation of two adjacent clamping members 110 at the intersection surface, preventing the intersection surface from warping upward under the action of high temperature for a long time, affecting the clamping and fixation of the battery 10.

[0039] It is understandable that the clamping members 110 in each clamping group 100 are fixed by a mortise and tenon structure of a convex portion 111 and a concave portion 112, and each second fastening structure can be a bolt of the same type. The bolt connection pair is further fastened to avoid misalignment of the clamping members 110, ensuring that the clamping members 110 in the clamping group 100 are in the same plane, thereby ensuring uniform distribution of the initial constraint.

[0040] In one embodiment, see Figure 2 and Figure 3 The clamping member 110 can exist in at least two forms in the clamping group 100. The following example uses the clamping member 110 having three forms in the clamping group 100 as an example.

[0041] The at least two clamping members 110 may include a first clamping member 120, a second clamping member 130, and at least one third clamping member 140 inserted between the first clamping member 120 and the second clamping member 130. A convex portion 111 may be formed at one end of the first clamping member 120, a concave portion 112 may be formed at one end of the second clamping member 130, a concave portion 112 may be formed at one end of the third clamping member 140, and a convex portion 111 may be formed at the other end. When there are multiple third clamping members 140, the convex portion 111 of one third clamping member 140 is used to be inserted into the concave portion 112 of another third clamping member 140. The concave portion 112 of the first clamping member 110 is plug-connected with the convex portion 111 of the third clamping member 140 , and the concave portion 112 of the third clamping member 140 is plug-connected with the convex portion 111 of the second clamping member 130 , thereby fixing adjacent clamping members 110 in the clamping group 100 .

[0042] In the embodiment of the present disclosure, the number of clamping members 110 included in each clamping group 100 may be three, four or more. In one embodiment, when the number of clamping members 110 is three, the number of the first clamping sub-member 120, the second clamping sub-member 130 and the third clamping sub-member 140 in each clamping group 100 may be one respectively. Of course, in other embodiments, the number of the third clamping sub-member 140 in each clamping group 100 is two, three or more. For example, when there are four clamping members in each clamping group 100, the number of the first clamping sub-member 120 and the second clamping sub-member 130 may be one respectively, and the number of the third clamping sub-member 140 may be two. The number of the third clamping sub-member 140 mainly depends on the length of the battery 10, and no specific limitation is made here.

[0043] In order to make the battery clamping mechanism more regular, in one embodiment, refer to Figures 1 to 4 The end of the first clamping component 120 away from the third clamping component 140 can be constructed as a plane, and the end of the second clamping component 130 away from the third clamping component 140 can be constructed as a plane, that is, the outer end surfaces of the battery clamping mechanism are both constructed as planes, thereby reducing the space occupied by the first clamping component 120 and the second clamping component 130, which is conducive to the miniaturized design of the battery clamping mechanism.

[0044] In one embodiment, see Figures 1 to 6 The end of the clamping member 110 where the recess 112 is formed can be constructed in a U-shape. The recess 112 can be constructed in a U-shape or a wave-like structure composed of multiple U-shapes. The U-shape can prevent the clamping members 110 in the clamping group 100 from being in the same plane after docking, thereby affecting the clamping effect.

[0045] In one embodiment, reference Figure 6 , the two side walls of the U-shape may be opposite to each other in the second direction, or, referring to Figure 5 The two side walls of the U-shape can be opposite to each other in the first direction, which can prevent the clamping member 110 from sliding and deflecting, ensure that the outer sides of the clamping members 110 are in the same plane after the clamping members 110 are plugged in, ensure the uniform distribution of the initial restraining force, and thus ensure the clamping effect.

[0046] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0047] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0048] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A battery clamping mechanism, characterized in that: It comprises two clamping groups arranged opposite to each other for clamping batteries, each of the clamping groups comprises at least two clamping members, each of the clamping members is formed with a convex portion and / or a concave portion, and the convex portion on one of the clamping members is used to be plugged in with the concave portion on the other clamping member in a shape matching, wherein the battery clamping mechanism further comprises a first fastening structure for fixing the two clamping groups along a first direction and a second fastening structure for fixing the convex portion of one of the clamping members in the concave portion of the other clamping member along a second direction, the first direction is the relative direction of the two clamping groups, and the second direction is perpendicular to the direction of plugging of the concave portion and the convex portion.

2. The battery clamping mechanism according to claim 1, characterized in that: The battery clamping mechanism further comprises two side bars, and the two side bars are used to be arranged on opposite sides of the battery.

3. The battery clamping mechanism according to claim 2, characterized in that: The outer side of the side strip away from the battery is aligned with the outer side of the clamping group along the first direction.

4. The battery clamping mechanism according to claim 2, characterized in that: The clamping member is formed with a first mounting hole whose axis extends along the first direction, the side bar is formed with a second mounting hole coaxially arranged with the first mounting hole, and the first fastening structure can penetrate the first mounting hole and the second mounting hole.

5. The battery clamping mechanism according to claim 4, characterized in that: Each of the clamping members is provided with a plurality of the first mounting holes, the plurality of the first mounting holes are distributed at intervals in the circumferential direction of the clamping member (110), and the number of the second mounting holes is plural and they are arranged in one-to-one correspondence with the plurality of the first mounting holes.

6. The battery clamping mechanism according to claim 1, characterized in that: The two opposite sides of the convex portion along the second direction and the two opposite sides of the concave portion along the second direction are both provided with third mounting holes, and the second fastening structure can penetrate the third mounting holes at the two opposite sides of the clamping member along the second direction respectively.

7. The battery clamping mechanism according to claim 1, characterized in that: The at least two clamping members include a first clamping member, a second clamping member and at least one third clamping member inserted between the first clamping member and the second clamping member, the first clamping member has the convex portion formed at one end, the second clamping member has the concave portion formed at one end, the third clamping member has the concave portion formed at one end and the convex portion formed at the other end.

8. The battery clamping mechanism according to claim 7, characterized in that: One end of the first clamping member away from the third clamping member is configured as a plane, and one end of the second clamping member away from the third clamping member is configured as a plane.

9. The battery clamping mechanism according to claim 1, characterized in that: The end of the clamping member where the recess is formed is configured in a U shape.

10. The battery clamping mechanism according to claim 9, characterized in that: The two side walls of the U-shape are opposite to each other in the second direction, or the two side walls of the U-shape are opposite to each other in the first direction.

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