Extrusion structure for battery extrusion test and battery extrusion test device

Abstract

The utility model relates to the technical field of battery testing, in particular to an extrusion structure for battery extrusion testing and a battery extrusion testing device.The extrusion structure for the battery extrusion testing comprises an extrusion head for extruding a battery and a base for installing the extrusion head, the extrusion head can be connected to the base in the first direction or the second direction, and the first direction and the second direction are different. According to the utility model, the connection direction of the extrusion head and the base can be switched according to requirements so as to meet different requirements of extrusion tests.

Description

Technical Field

[0001] The utility model relates to the technical field of battery testing, in particular to an extrusion structure and a battery extrusion testing device for battery extrusion testing. Background Art

[0002] Battery squeeze testing evaluates a battery's response to external mechanical forces, ensuring the safety of battery products during use. The basic principle of a battery squeeze test is as follows: A specific device applies a certain amount of pressure to the battery, simulating the squeeze conditions it might experience in actual use, until a preset pressure value is reached or the battery deforms to a certain degree. During this process, the battery is observed for leaks, fires, or explosions, thereby assessing its safety performance.

[0003] In order to perform the above-mentioned extrusion test on the battery, some devices for battery extrusion testing have been disclosed. For example, the utility model patent with authorization announcement number CN214844456U discloses a battery module extrusion testing device, including: a base; a mounting mechanism, which is detachably arranged on the base, and the mounting mechanism is provided with a fixing portion for fixing the battery module to be tested on the top of the mounting mechanism, and the mounting mechanism with the battery module fixed can be removed from the base to form a support structure located at the bottom of the battery module; an extrusion portion, which has an extrusion head that is driven and movable, and the extrusion head is arranged corresponding to the end to be extruded of the battery module to be tested, so as to form an extrusion on the end to be extruded.

[0004] However, such a device still has limitations. To meet different squeeze test requirements, squeeze testers need to switch the squeeze head so that it is set in different directions before the test, so as to squeeze the battery horizontally or vertically. However, the above squeeze head cannot be switched in direction during installation, which cannot fully meet the requirements of squeeze testing. Utility Model Content

[0005] In order to solve the problems existing in the prior art, the first aspect of the present invention aims to provide an extrusion structure for battery extrusion testing, which can switch the connection direction between the extrusion head and the base according to needs to meet the needs of extrusion testing.

[0006] The second aspect of the present utility model aims to provide a battery compression testing device.

[0007] According to the purpose of the first aspect of the present utility model, an extrusion structure for battery extrusion testing is provided, comprising an extrusion head for extruding the battery and a base for mounting the extrusion head, wherein the extrusion head can be connected to the base along a first direction or a second direction, and the first direction and the second direction are different directions.

[0008] Furthermore, the extrusion structure for battery extrusion testing provided by the present invention may also have the following feature: the first direction and the second direction are perpendicular to each other.

[0009] Furthermore, the extrusion structure for battery extrusion testing provided by the present invention may also have the following feature: the extrusion head is detachably fixed to the base.

[0010] Furthermore, the extrusion structure for battery extrusion testing provided by the present invention may also have the following characteristics: the extrusion head is detachably fixed to the base through a connecting portion, the connecting portion includes a connecting piece provided on the extrusion head and a connecting hole provided on the base, and the connecting piece is inserted into the connecting hole.

[0011] Furthermore, the extrusion structure for battery extrusion testing provided by the present invention may also have the following characteristics: the connecting member is provided with a first through hole and a second through hole that are staggered and connected to each other, the base is provided with a positioning hole connected to the connecting hole, and the connecting member is connected to the connecting hole by sequentially passing through the positioning hole and a positioning pin of the first through hole or the second through hole.

[0012] Furthermore, the extrusion structure for battery extrusion testing provided by the present invention may also have the following characteristics: the extrusion head is also connected to the base through a clamping portion, and the clamping portion includes a clamping slot provided on the base and a clamping piece provided on the extrusion head, and the clamping piece is clamped in the clamping slot.

[0013] Furthermore, the extrusion structure for battery extrusion testing provided by the present invention may also have the following characteristics: the clamping portion includes two first clamping slots arranged in sequence along the first direction and two second clamping slots arranged in sequence along the second direction, and the connecting hole is located between the two first clamping slots and between the two second clamping slots.

[0014] Furthermore, the extrusion structure for battery extrusion testing provided by the present invention may also have the following feature: the end of the extrusion head close to the battery is arc-shaped.

[0015] According to the purpose of the second aspect of the present invention, a battery squeeze test device is provided, comprising a fixing structure for fixing the battery and an extrusion structure for battery squeeze testing as described above, wherein the extrusion structure is arranged opposite to the fixing structure.

[0016] Furthermore, the battery extrusion testing device provided by the present invention may also have the following feature: it also includes a telescopic structure for controlling the movement of the extrusion structure toward the fixed structure.

[0017] The beneficial effects of the utility model are:

[0018] 1. The extrusion structure for the battery extrusion test provided in this application can switch the connection direction between the extrusion head and the base according to needs to meet different needs of the extrusion test.

[0019] 2. In the present application, the detachable connection between the connecting piece and the connecting hole can achieve stable locking of the extrusion head and the base, and improve the convenience of switching the connection mode between the extrusion head and the base.

[0020] 3. In this application, the extrusion head and the base are further connected through a card member and a card slot. On the basis of ensuring the convenience of the switching operation, the stability of the connection between the extrusion head and the base is improved, and better support is provided for the connection between the connecting member and the connecting hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present invention, but not all. Those skilled in the art can derive other drawings from these drawings without inventive effort.

[0022] Figure 1 A schematic diagram of the structure in which the extrusion head and the base are connected along a first direction;

[0023] Figure 2 It is a structural schematic diagram of the extrusion head and the base connected along the second direction;

[0024] Figure 3 An exploded view of the extrusion head and the base connected along a first direction;

[0025] Figure 4 This is an exploded view of the extrusion head and the base connected along the second direction.

[0026] In the picture:

[0027] 1. Extrusion head; 2. Connecting piece; 21. First through hole; 22. Second through hole; 3. Base; 31. Connecting hole; 32. Positioning hole; 4. Positioning pin; 5. Slot; 51. First slot; 52. Second slot; 6. Card; 7. First direction; 8. Second direction. DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0029] The utility model provides an extrusion structure for battery extrusion testing, comprising an extrusion head 1 for extruding the battery and a base 3 for mounting the extrusion head 1. During the battery extrusion test, the extrusion tester needs to set the extrusion head 1 in different directions according to different test requirements, such as Figure 1 and Figure 2 As shown, the extrusion head 1 of the extrusion structure provided by the present invention can be connected to the base 3 along a first direction 7 or a second direction 8, and the first direction 7 and the second direction 8 are different directions.

[0030] Generally, the first direction 7 and the second direction 8 are perpendicular to each other, which can meet the needs of most extrusion tests. In addition, designing the extrusion head 1 to be switchable along two perpendicular directions helps to simplify the structure of the test device, thereby improving the convenience of the switching operation.

[0031] In order to ensure that the connection between the extrusion head 1 and the base 3 can be switched according to demand, such as Figure 3 As shown, the extrusion head 1 is detachably fixed to the base 3 via a connecting portion. The connecting portion includes a connecting member 2 provided on the extrusion head 1 and a connecting hole 31 provided on the base 3 , and the connecting member 2 is inserted into the connecting hole 31 .

[0032] As a further improvement of the above embodiment, Figure 3 As shown, the connecting member 2 is provided with a first through hole 21 and a second through hole 22 that are interlaced and connected to each other, and the base 3 is provided with a positioning hole 32 that is connected to the connecting hole 31. The connecting member 2 and the connecting hole 31 are connected by a positioning pin 4 that passes through the positioning hole 32 and the first through hole 21 or the second through hole 22 in sequence. When the first direction 7 and the second direction 8 are perpendicular to each other, the first through hole 21 and the second through hole 22 are perpendicular to each other. When connected, when the positioning pin 4 passes through the positioning hole 32 and the first through hole 21 in sequence, refer to Figure 1 , the extrusion head 1 is connected to the base 3 along the first direction 7; the positioning pin 4 passes through the positioning hole 32 and the second through hole 22 in sequence, referring to Figure 2 , the extrusion head 1 is connected to the base 3 along the second direction 8. By locking the connector 2 with the positioning pin 4, the stability of the connection of the extrusion head 1 in different directions and the convenience of switching can be ensured.

[0033] In order to further improve the stability of the connection between the extrusion head 1 and the base 3, the extrusion head 1 is further connected to the base 3 through a clamping portion to achieve rapid locking and stability of the extrusion head 1 and the base 3. The clamping portion includes a clamping slot 5 provided on the base 3 and a clamping member 6 provided on the extrusion head 1, and the clamping member 6 is clamped in the clamping slot 5. In a specific embodiment, Figure 3 and Figure 4 As shown, the clamping portion includes two first clamping slots 51 arranged sequentially along a first direction 7 and two second clamping slots 52 arranged sequentially along a second direction 8. The connecting hole 31 is located between the two first clamping slots 51 and between the two second clamping slots 52. There are preferably four clamping members 6, whose positions correspond to the positions of the first clamping slots 51 and the second clamping slots 52. The extrusion head 1 and the base 3 are connected via the four clamping slots 5 and the four clamping members 6 located around the connecting hole 31, providing better circumferential support for the connection between the connecting member 2 and the connecting hole 31 and preventing deviation caused by single-point force.

[0034] During the extrusion process, in order to make the force on each part of the battery uniform and controllable, the end of the extrusion head 1 close to the battery is preferably arc-shaped.

[0035] In some specific embodiments, according to different requirements of the extrusion test, the switching process of the connection mode between the extrusion head 1 and the base 3 is as follows:

[0036] Reference Figures 1 to 4 , connect the extrusion head 1 and the base 3 to each other along the first direction 7 (such as Figure 1 As shown in FIG1 , the first connection mode is set. At this time, the positioning pin 4 passes through the positioning hole 32 and the first through hole 21 in sequence. When the setting direction of the extrusion head 1 needs to be switched, first, the positioning pin 4 is pulled out, and the extrusion head 1 is moved to separate the clamping member 6 from the clamping slot 5. Then, the extrusion head 1 is rotated to insert the clamping member 6 into the clamping slot 5 again and the connector 2 is inserted into the connecting hole 31. Finally, the positioning pin 4 is inserted into the positioning hole 32 and the second through hole 22 in sequence to fix the connector 2. The extrusion head 1 and the base 3 are connected to each other along the second direction 8 (as shown in FIG1 ). Figure 2 ), forming a second connection mode. During the switching process, the card member 6 located in the first card slot 51 in the first connection mode is engaged with the second card slot 52 after switching to the second connection mode. The card member 6 located in the second card slot 52 in the first connection mode is engaged with the first card slot 51 after switching to the second connection mode.

[0037] The utility model also provides a battery extrusion test device, comprising a fixing structure for fixing the battery and the extrusion structure for battery extrusion testing as described above, wherein the extrusion structure and the fixing structure are arranged opposite to each other.

[0038] The battery squeeze test device also includes a telescopic structure for controlling the movement of the squeeze structure toward the fixed structure. When in use, the telescopic structure controls the movement of the squeeze structure so that the squeeze head 1 approaches the battery fixed by the fixed structure to perform the battery squeeze test.

[0039] The contents described above can be implemented individually or in combination in various ways, and these variations are all within the scope of protection of the present invention.

[0040] In the description of the invention, it should be noted that relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0041] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "front," "back," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In the description of the present invention, unless otherwise specified, "several" means two or more.

[0042] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific embodiments of the present invention are not limited to these descriptions. For those skilled in the art of the present invention, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all of these should be considered to fall within the scope of protection of the present invention.

Claims

1. An extrusion structure for battery extrusion testing, characterized in that: The invention comprises an extrusion head (1) for extruding a battery and a base (3) for mounting the extrusion head (1); the extrusion head (1) can be connected to the base (3) along a first direction (7) or a second direction (8); the first direction (7) and the second direction (8) are different directions.

2. The extrusion structure for battery extrusion testing according to claim 1, characterized in that: The first direction (7) and the second direction (8) are perpendicular to each other.

3. The extrusion structure for battery extrusion testing according to claim 1, characterized in that: The extrusion head (1) is detachably fixed to the base (3).

4. The extrusion structure for battery extrusion testing according to claim 3, characterized in that: The extrusion head (1) is detachably fixed to the base (3) via a connecting portion, wherein the connecting portion comprises a connecting piece (2) provided on the extrusion head (1) and a connecting hole (31) provided on the base (3), and the connecting piece (2) is inserted into the connecting hole (31).

5. The extrusion structure for battery extrusion testing according to claim 4, characterized in that: The connecting member (2) is provided with a first through hole (21) and a second through hole (22) that are interlaced and connected to each other, and the base (3) is provided with a positioning hole (32) that is connected to the connecting hole (31). The connecting member (2) and the connecting hole (31) are connected via a positioning pin (4) that sequentially passes through the positioning hole (32) and the first through hole (21) or the second through hole (22).

6. The extrusion structure for battery extrusion testing according to claim 4, characterized in that: The extrusion head (1) is further connected to the base (3) via a clamping portion, wherein the clamping portion comprises a clamping slot (5) provided on the base (3) and a clamping member (6) provided on the extrusion head (1), and the clamping member (6) is clamped in the clamping slot (5).

7. The extrusion structure for battery extrusion testing according to claim 6, characterized in that: The clamping portion comprises two first clamping slots (51) arranged in sequence along the first direction (7) and two second clamping slots (52) arranged in sequence along the second direction (8), and the connecting hole (31) is located between the two first clamping slots (51) and between the two second clamping slots (52).

8. The extrusion structure for battery extrusion testing according to claim 1, characterized in that: The end of the extrusion head (1) close to the battery is arc-shaped.

9. A battery compression test device, comprising a fixing structure for fixing a battery, characterized in that: It also includes an extrusion structure for battery extrusion testing according to any one of claims 1 to 8, wherein the extrusion structure is arranged opposite to the fixed structure.

10. The battery squeeze test device according to claim 9, characterized in that: It also includes a telescopic structure for controlling the movement of the extrusion structure toward the fixed structure.

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