Bottom ball hitting tool, ball hitting table and ball hitting system

Abstract

The utility model relates to a bottom ball hitting tool, a ball hitting table and a ball hitting system, and relates to the field of battery testing technology. The tool includes a base and a clamping mechanism, the bottom of the base has a supporting surface; the clamping mechanism has a clamping surface, the clamping surface is located at the bottom of the supporting surface, the two clamping surfaces are arranged oppositely, and the distance between the two clamping surfaces is adjustable. The utility model can provide vertical support for the battery cell or battery cell module through the arrangement of the supporting surface, ensure that the battery cell or battery cell module fully withstands the impact force of the ball hitting test, and at the same time, by making the distance between the two clamping surfaces adjustable, single battery cells or battery cell modules of different specifications can be effectively clamped and pre-tightened, reducing the relative slippage of the battery cell or battery cell module when subjected to impact force; the utility model can be compatible with different specifications of a single battery cell or battery cell module to achieve clamping and fixing of a single battery cell or battery cell module, and provide reliable support for bottom ball hitting test of a single battery cell or battery cell module.

Description

Technical Field

[0001] The utility model relates to the technical field of battery testing, in particular to a bottom ball hitting tool, a ball hitting table and a ball hitting system. Background Art

[0002] With the breakthrough of power battery technology, the performance of new energy electric vehicles is getting better and better, and their market share is also getting higher and higher. Before the battery is officially shipped, a series of safety tests need to be done to simulate the various environments encountered when the battery pack is mounted on the vehicle and used, to verify whether the battery can work normally. This also involves simulating the battery in the case of the vehicle chassis (bottom of the battery pack) hitting the bottom while driving, and exploring the risk of safety failure of the liquid cooling plate and battery cells at the bottom of the battery pack.

[0003] Currently, most tests for battery pack bottom impact are performed by ball impact tests on the entire package bottom. Directly verifying different bottom impact conditions on the entire package is not only expensive and cumbersome, but also has a long test cycle.

[0004] The inventor of the utility model discovered that a bottom ball impact test can be performed on a single battery cell or a battery cell module composed of multiple battery cells, simulating the application scenario in which the power battery is supported by the bottom or is damaged by the impact of obstacles thrown from the bottom direction during normal use, thereby facilitating the study of the degree of damage to the battery caused by different battery cell bottom impact conditions.

[0005] At present, the tooling for the bottom ball impact test is usually used to fix the entire battery, which is difficult to install. In addition, since the specifications of individual battery cells or battery cell modules vary greatly, there is no special equipment to effectively fix the battery cells or battery cell modules, which may affect the research accuracy of individual battery cells or battery cell modules in the bottom ball impact test. Utility Model Content

[0006] The purpose of the invention of the utility model is to provide a bottom ball hitting tool, a ball hitting table and a ball hitting system to address the technical problem in the prior art that it is difficult to effectively fix a single battery cell or a battery cell module with greatly different specifications.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] In a first aspect, a bottom ball striking tool is provided, comprising:

[0009] A base, the bottom of which has a support surface, the support surface is used to support a single battery cell or a battery cell module;

[0010] The clamping mechanism has a clamping surface, the clamping surface is located at the bottom of the supporting surface, the two clamping surfaces are arranged opposite to each other, and the distance between the two clamping surfaces is adjustable, and the two clamping surfaces are used to clamp a single battery cell or a battery cell module.

[0011] As an optional solution of the present utility model, the clamping mechanism includes a clamping member and an adjustment assembly;

[0012] The two clamping members are spaced apart, and the surfaces of the two clamping members facing each other serve as the clamping surfaces, and at least one of the clamping members is slidably connected to the base;

[0013] The adjusting assembly is used for adjusting the distance between the two clamping members.

[0014] As an optional solution of the utility model, the adjustment assembly includes a threaded rod and a nut;

[0015] Two ends of the tooth bar pass through the two clamping members respectively, and two ends of the tooth bar are respectively threadedly connected with the nuts.

[0016] As an optional solution of the present invention, the number of the tooth bars is at least four, and the ends of the four tooth bars pass through the four corners of the clamping member respectively.

[0017] As an optional solution of the present invention, the two clamping members are respectively slidably connected to the base.

[0018] As an optional solution of the utility model, the base includes a crossbeam and a support member;

[0019] The same side surfaces of the plurality of support members together constitute the support surface, the plurality of support members are connected to the crossbeam, and the plurality of support members are arranged side by side along the length direction of the crossbeam, and the spacing between adjacent support members is adjustable.

[0020] As an optional solution of the utility model, there are multiple crossbeams, the multiple crossbeams are parallel to each other, and the crossbeams are provided with multiple first connection holes along their length direction;

[0021] The clamping member is provided with a plurality of second connection holes, and the plurality of second connection holes correspond to the plurality of first connection holes one by one;

[0022] The supporting members are respectively connected to the corresponding first connecting holes and the second connecting holes through bolts.

[0023] As an optional solution of the present invention, the support member is provided with a strip hole, the length direction of the strip hole is parallel to the sliding direction of the clamping member, and the strip hole and the second connecting hole are connected by bolts.

[0024] In a second aspect, a ball hitting table is provided, comprising a frame and a ball hitting device, wherein the frame is connected to a bottom ball hitting tool as described in any of the above schemes;

[0025] The ball hitting device is located at the bottom of the bottom ball hitting tool, and the supporting surface faces the hitting part of the ball hitting device.

[0026] In a third aspect, a ball hitting system is provided, comprising a battery module and a ball hitting table as described in any of the above solutions;

[0027] The two clamping surfaces are arranged at intervals;

[0028] The battery cell module includes a plurality of battery cells stacked in sequence, the plurality of battery cells abut against the support surface at the same time, and the two battery cells at the outermost sides abut against the clamping surfaces on the corresponding sides respectively.

[0029] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0030] 1. The utility model provides a bottom ball striking tool, which can provide vertical support for battery cells or battery cell modules by setting the supporting surface, so as to ensure that the battery cells or battery cell modules can fully withstand the impact force of the ball striking test, and at the same time, by making the distance between the two clamping surfaces adjustable, single battery cells or battery cell modules of different specifications can be effectively clamped and pre-tightened to reduce the relative slippage of the battery cells or battery cell modules when subjected to impact force; through the cooperation of the supporting surface and the clamping surface, different specifications of single battery cells or battery cell modules can be compatible to realize the clamping and fixation of single battery cells or battery cell modules, so as to provide reliable support for the bottom ball striking test of single battery cells or battery cell modules.

[0031] 2. The utility model provides a ball hitting table, which limits the position of the ball hitting device and the supporting surface so that when the hitting part of the ball hitting device extends out and hits a single battery cell or a battery cell module, the supporting surface can effectively support the single battery cell or the battery cell module.

[0032] 3. The utility model provides a ball striking system, which can ensure the pre-tightening of the battery module and reduce the possibility of relative slippage of the battery module when it is subjected to impact force by clamping the two clamping surfaces on both sides of the battery module along the stacking direction of multiple battery cells in the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is an overall schematic diagram of Example 1 of the utility model.

[0034] Figure 2 This is another overall schematic diagram of Example 1 of the utility model.

[0035] Figure 3It is an overall schematic diagram of Embodiment 1 of the utility model from another perspective.

[0036] Figure 4 This is a schematic diagram of the coordination between the tooling and the battery cell module in Example 1 of the utility model.

[0037] Figure 5 This is a schematic diagram of the coordination between the tooling and a single battery cell according to Example 1 of the utility model.

[0038] Figure 6 It is an overall schematic diagram of Example 2 of the utility model.

[0039] Figure 7 It is a side schematic diagram of embodiment 2 of the utility model.

[0040] Figure 8 It is an overall schematic diagram of Example 3 of the utility model.

[0041] Fig. 9 It is a side schematic diagram of embodiment 3 of the utility model.

[0042] Markings in the figure: 1-base; 11-crossbeam; 111-first connecting hole; 12-support member; 121-support surface; 122-strip hole; 2-clamping mechanism; 21-clamping member; 211-clamping surface; 212-second connecting hole; 22-thread bar; 23-nut; 3-frame; 4-ball striking device; 5-battery cell module; 6-battery cell. DETAILED DESCRIPTION

[0043] The utility model is described in detail below in conjunction with the accompanying drawings.

[0044] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0045] In the description of the specific embodiments of the present invention, unless otherwise specified, the terms indicating the orientation or position relationship such as "upper", "lower", "left", "right", "center", "inside", "outside", etc. are all expressions based on the orientation or position relationship shown in the drawings, or the orientation or position relationship of the product / equipment / device of the utility model when it is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the utility model or simplifying the description in the specific embodiments, so that technicians can quickly understand the scheme, rather than indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present invention.

[0046] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the solution of the utility model.

[0047] The expressions “first”, “second”, “third”, etc. in the terms are merely used to distinguish the description of the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0048] In the description of the embodiments, "several", "plurality" and "multiple" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0049] In addition, in the description of the technical solution of the utility model, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal communication of two components.

[0050] Example 1

[0051] This embodiment provides a bottom ball striking tool, such as Figures 1 to 3 As shown, it includes a base 1 and a clamping mechanism 2; the bottom of the base 1 has a downwardly arranged support surface 121, and the support surface 121 is used to support a single battery cell 6 or a battery cell module 5; the clamping mechanism 2 has two clamping surfaces 211, and the clamping surfaces 211 are located at the bottom of the support surface 121. The two clamping surfaces 211 are arranged opposite to each other, and the distance between the two clamping surfaces 211 is adjustable, and the two clamping surfaces 211 are used to clamp a single battery cell 6 or a battery cell module 5.

[0052] A single battery cell 6 or a battery cell module 5 formed by stacking a plurality of battery cells 6 required for the test is defined as a clamped mechanism 2. When performing a ball impact test, Figure 4 and Figure 5 As shown, the clamped mechanism 2 is placed between the two clamping surfaces 211 , and the top of the clamped mechanism 2 is in contact with the support surface 121 . By adjusting the distance between the two clamping surfaces 211 , the two clamping surfaces 211 clamp both sides of the clamped mechanism 2 .

[0053] The utility model can provide vertical support for the battery cell 6 or the battery cell module 5 by setting the support surface 121, thereby ensuring that the battery cell 6 or the battery cell module 5 can fully withstand the impact force of the ball impact test; at the same time, by making the distance between the two clamping surfaces 211 adjustable, single battery cells 6 or battery cell modules 5 of different specifications can be effectively clamped and pre-tightened, thereby reducing the relative slippage of the battery cell 6 or the battery cell module 5 when subjected to impact force; through the cooperation of the support surface 121 and the clamping surface 211, it is possible to be compatible with the clamping and fixation of a single battery cell 6 or battery cell module 5, thereby providing reliable support for the bottom ball impact test of a single battery cell 6 or battery cell module 5.

[0054] For clamping the battery cell module 5 , it is preferred that the two clamping surfaces 211 abut against two sides of the battery cell module 5 along the stacking direction of the battery cells 6 in the battery cell module 5 .

[0055] The clamping mechanism 2 may be any mechanism capable of clamping and fixing a single battery cell 6 or a battery cell module 5 .

[0056] In one or more embodiments, for the clamping mechanism 2, specifically, the clamping mechanism 2 includes two clamping members 21 and an adjustment assembly;

[0057] The two clamping members 21 are arranged at intervals, and at least one of the clamping members 21 is slidably connected to the base 1 along the connecting line direction of the two clamping members 21, and the side surfaces of the two clamping members 21 facing each other serve as the clamping surface 211; the adjustment component is used to adjust the distance between the two clamping members 21.

[0058] The function of adjusting the distance between the two clamping members 21 is achieved by driving the slidable clamping member 21 to slide through the adjusting component.

[0059] For at least one of the clamping members 21 being slidably connected to the base 1 , one of the clamping members 21 may be fixedly connected to the base 1 , and the other clamping member 21 may be slidably connected to the base 1 ; or both clamping members 21 may be slidably connected to the base 1 .

[0060] Specifically, the two clamping members 21 are respectively connected to the base 1 in a sliding manner along the connecting line direction of the two clamping members 21 .

[0061] The adjustment component can be an electric device arranged on the base 1, and the output part of the electric device is connected to the slidable clamping member 21; it can also be a matching structure of a screw and a nut 23 arranged between two clamping members 21, and the clamping member 21 is pushed to move by screwing the nut 23 in and out.

[0062] In one or more embodiments, when the two clamping members 21 are both slidably connected to the base 1, for the adjustment assembly, specifically, the adjustment assembly includes a toothed bar 22 and a nut 23; the two ends of the toothed bar 22 respectively pass through the two clamping members 21, and the two ends of the toothed bar 22 are respectively threadedly connected with the nuts 23, and the clamping member 21 is pushed to move by screwing the nut 23 in and out.

[0063] Among them, the number of tooth bars 22 can be one or more, preferably at least four, and the ends of the four tooth bars 22 respectively pass through the four corners of the clamping member 21, thereby ensuring that the clamping member 21 can effectively abut against the surface of a single battery cell 6 or a battery cell module 5 under the extrusion of the nuts 23 at the ends of the four tooth bars 22.

[0064] As for the base 1, the base 1 may be an integrated component or a structure formed by combining multiple components.

[0065] As for the support surface 121 , the support surface 121 may be an integral surface of a component, or may be a surface formed by combining multiple surfaces on multiple components.

[0066] In one or more embodiments, based on the scheme that the base 1 is a mechanism formed by combining multiple components, specifically, the base 1 includes a crossbeam 11 and multiple support members 12; the same side surfaces of the multiple support members 12 together constitute the support surface 121, the multiple support members 12 are connected to the crossbeam 11, and the multiple support members 12 are arranged side by side along the length direction of the crossbeam 11, and the distance between adjacent support members 12 is adjustable.

[0067] Among them, by setting up multiple support members 12, the relative support surface 121 is an integral surface on a component, which reduces the weight of the tooling and facilitates operation by operators. At the same time, it is also possible to adapt to the width of a single battery cell 6 or a battery cell module 5 by adjusting the spacing of the support members 12, thereby ensuring effective support for the single battery cell 6 or the battery cell module 5.

[0068] The support member 12 may be a plate or a block with one side surface being a plane.

[0069] In one or more embodiments, more specifically, the number of the beams 11 can be multiple, the length directions of the multiple beams 11 are parallel to each other, and the beam 11 is provided with multiple first connecting holes 111 along its own length direction; the clamping member 21 is provided with multiple second connecting holes 212, and the multiple second connecting holes 212 correspond to the multiple first connecting holes 111 one by one; the support member 12 is respectively connected to the multiple beams 11 and the corresponding multiple first connecting holes 111 and the second connecting holes 212 on the two clamping members 21 by bolts.

[0070] On this basis, by connecting the support member 12 with different corresponding first connecting holes 111 and second connecting holes 212, the position of the support member 12 can be adjusted along the length direction of the beam 11, thereby adjusting the spacing between adjacent support members 12. At the same time, the position of a single battery cell 6 or battery cell module 5 along the length direction of the beam 11 can also be adjusted, so as to adjust the position where the ball hitting device 4 hits the single battery cell 6 or battery cell module 5.

[0071] In one or more embodiments, for the sliding between the support member 12 and the clamping member 21, the support member 12 may be provided with a strip hole 122, the length direction of the strip hole 122 is parallel to the sliding direction of the clamping member 121, and the strip hole 122 and the second connecting hole 212 are connected by bolts.

[0072] When the clamping member 21 needs to slide to adjust the spacing between the clamping members 21, just loosen the bolts. At this time, under the premise that both clamping members 21 can slide, the position of a single battery cell 6 or a battery cell module 5 along the sliding direction can also be adjusted by synchronously moving the two clamping members 21, so as to adjust the position where the ball hitting device 4 hits the single battery cell 6 or the battery cell module 5; when the sliding of the clamping member 21 is completed, tighten the bolts.

[0073] On this basis, the length direction of the strip hole 122 and the length direction of the beam 11 can be made perpendicular to each other, thereby facilitating the adjustment of the position of a single battery cell 6 or a battery cell module 5 in two directions.

[0074] Example 2

[0075] This embodiment provides a ball hitting table, such as Figure 6 and Figure 7 As shown, it includes a frame 3 and a ball hitting device 4, and the frame 3 is connected to any one of the bottom ball hitting fixtures as described in Example 1; the ball hitting device 4 is located at the bottom of the bottom ball hitting fixture, and the support surface 121 faces the hitting part of the ball hitting device 4. When the hitting part of the ball hitting device 4 extends out and hits a single battery cell 6 or a battery cell module 5, the support surface 121 can effectively support the single battery cell 6 or the battery cell module 5.

[0076] Example 3

[0077] This embodiment provides a ball hitting system, such as Figure 8 and Fig. 9 As shown, it includes a battery cell module 5 and any one of the hitting tables described in Example 2; the two clamping surfaces 211 are arranged at intervals and can slide along a preset straight line direction; the battery cell module 5 includes a plurality of battery cells 6 stacked in sequence along the straight line direction, and the plurality of battery cells 6 abut against the support surface 121 at the same time, and the two outermost battery cells 6 respectively abut against the clamping surfaces 211 on the corresponding sides.

[0078] By clamping the two clamping surfaces 211 on both sides of the battery module 5 along the stacking direction of the multiple battery cells 6 in the battery module 5, the battery module 5 can be pre-tightened and the possibility of relative slippage of the battery module 5 when subjected to impact force can be reduced.

[0079] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bottom ball hitting tool, characterized in that: include: A base (1), wherein the bottom of the base (1) has a support surface (121), and the support surface (121) is used to support a single battery cell (6) or a battery cell module (5); A clamping mechanism (2), the clamping mechanism (2) having a clamping surface (211), the clamping surface (211) being located at the bottom of the support surface (121), the two clamping surfaces (211) being arranged opposite to each other, and the distance between the two clamping surfaces (211) being adjustable, and the two clamping surfaces (211) being used to clamp a single battery cell (6) or a battery cell module (5).

2. A bottom ball hitting tool according to claim 1, characterized in that: The clamping mechanism (2) comprises a clamping member (21) and an adjustment assembly; The two clamping members (21) are arranged at intervals, and the surfaces of the two clamping members (21) facing each other serve as the clamping surface (211), and at least one of the clamping members (21) is slidably connected to the base (1); The adjustment component is used to adjust the distance between the two clamping members (21).

3. A bottom ball hitting tool according to claim 2, characterized in that: The adjustment assembly comprises a threaded rod (22) and a nut (23); Both ends of the toothed bar (22) pass through the two clamping members (21) respectively, and both ends of the toothed bar (22) are respectively threadedly connected with the nuts (23).

4. A bottom ball hitting tool according to claim 3, characterized in that: The number of the tooth bars (22) is at least four, and the ends of the four tooth bars (22) pass through the four corners of the clamping member (21) respectively.

5. A bottom ball hitting tool according to claim 2, characterized in that: The two clamping members (21) are respectively slidably connected to the base (1).

6. A bottom ball hitting tool according to any one of claims 2-5, characterized in that: The base (1) comprises a crossbeam (11) and a support member (12); The same side surfaces of the plurality of support members (12) together constitute the support surface (121); the plurality of support members (12) are connected to the crossbeam (11); and the plurality of support members (12) are arranged side by side along the length direction of the crossbeam (11); and the spacing between adjacent support members (12) is adjustable.

7. A bottom ball hitting tool according to claim 6, characterized in that: There are a plurality of crossbeams (11), the plurality of crossbeams (11) are parallel to each other, and the crossbeam (11) is provided with a plurality of first connection holes (111) along its length direction; The clamping member (21) is provided with a plurality of second connection holes (212), and the plurality of second connection holes (212) correspond to the plurality of first connection holes (111) in a one-to-one manner; The support member (12) is respectively connected to the corresponding first connection hole (111) and the second connection hole (212) by bolts.

8. A bottom ball hitting tool according to claim 7, characterized in that: The support member (12) is provided with a strip hole (122), the length direction of the strip hole (122) is parallel to the sliding direction of the clamping member (21), and the strip hole (122) and the second connecting hole (212) are connected by bolts.

9. A ball hitting table, characterized in that: It comprises a frame (3) and a ball hitting device (4), wherein the frame (3) is connected to a bottom ball hitting tool as described in any one of claims 1 to 8; The ball striking device (4) is located at the bottom of the bottom ball striking tool, and the support surface (121) faces the striking part of the ball striking device (4).

10. A ball hitting system, characterized in that: It comprises a battery module (5) and a hitting table as claimed in claim 9; The two clamping surfaces (211) are arranged at intervals; The battery cell module (5) comprises a plurality of battery cells (6) stacked in sequence, wherein the plurality of battery cells (6) abut against the support surface (121) at the same time, and the two battery cells (6) on the outermost sides respectively abut against the clamping surface (211) on the corresponding side.

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