Battery cell detection device

Abstract

The utility model discloses a battery cell detection device, and relates to the technical field of batteries. The battery cell detection device comprises a base, a supporting piece, a first clamping piece and a second clamping piece, the supporting piece is rotationally connected to the base, the battery cell detection device has a first direction, the first clamping piece and the second clamping piece are slidably connected to the supporting piece in the first direction, and a clamping space used for containing a to-be-detected battery cell is formed between the first clamping piece and the second clamping piece; the first clamping piece and the second clamping piece can be relatively close to or far away from each other in the first direction so as to adjust the size of the clamping space. The size of the clamping space is adjusted by moving the first clamping piece and / or the second clamping piece, so that to-be-detected battery cells of different sizes are clamped and fixed, and the to-be-detected battery cells of different sizes are conveniently detected; meanwhile, the supporting piece is rotationally connected to the base, and the supporting piece rotates around the rotating center of the supporting piece, so that the position of the to-be-detected battery cell is more convenient to adjust, the working efficiency is improved, and the applicability of the battery cell detection device is higher.

Description

Technical Field

[0001] This application belongs to the field of battery technology, specifically relating to a battery cell testing device. Background Technology

[0002] With the development of X-ray sources and the resolution of detection devices, computed tomography (CT) technology has been applied to battery research and development and production. CT technology can analyze various internal structural features of batteries to promote the continuous progress of battery technology.

[0003] In related technologies, commonly used cell testing fixtures can only adapt to cells of fixed sizes, which has significant limitations in use. For cells of different sizes, the fixtures need to be changed frequently, which increases the complexity of operation. Utility Model Content

[0004] This application aims to provide a battery cell testing device that can solve the problem that commonly used battery cell testing fixtures in the related technology can only adapt to battery cells of fixed size, which has great limitations in use. For battery cells of different sizes, the fixtures need to be changed frequently, which increases the complexity of operation.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] In a first aspect, embodiments of this application propose a battery cell testing device, comprising: a base, a support member, a first clamping member, and a second clamping member. The support member is rotatably connected to the base. The battery cell testing device has a first direction. The first clamping member and the second clamping member are slidably connected to the support member along the first direction. A clamping space is formed between the first clamping member and the second clamping member. The clamping space is used to accommodate the battery cell to be tested. The first clamping member and the second clamping member can move closer or further apart along the first direction to adjust the size of the clamping space.

[0007] Optionally, the support member includes a main body, a first support, and a second support, the main body being rotatably connected to the base; the cell detection device further has an intersecting second direction and a third direction, both of which are perpendicular to the first direction; one end of the first support and one end of the second support are respectively connected to the main body; the other end of the first support extends along the second direction; the other end of the second support extends along the third direction; the first clamping member and the second clamping member are slidably connected to the first support; and / or the first clamping member and the second clamping member are slidably connected to the second support.

[0008] Optionally, the extending direction of the first support portion is perpendicular to the extending direction of the second support portion.

[0009] Optionally, both the first clamping member and the second clamping member include a clamping portion and a first sliding portion. The first sliding portion is slidably connected to the first support portion, and the clamping portion is connected to the first sliding portion. The clamping space is formed between the clamping portions of the first clamping member and the second clamping member. The first sliding portion can move relative to the first support portion to adjust the size of the clamping space.

[0010] Optionally, both the first clamping member and the second clamping member further include a second sliding portion, the second sliding portion being connected to the clamping portion and the first sliding portion, the second sliding portion being slidably connected to the second support portion, and the second sliding portion being movable relative to the second support portion to adjust the size of the clamping space.

[0011] Optionally, the cell testing device further includes a plurality of first fixing members; the first support portion is provided with a first sliding groove extending along the first direction, wherein one of the first fixing members passes through the first sliding portion and the first sliding groove, and the first fixing member is at least partially slidable along the first sliding groove to adjust the relative position of the clamping portion and the first support portion. The first fixing member is also used to lock or unlock the relative position between the first clamping member and the first support portion, and / or the first fixing member is used to lock or unlock the relative position between the second clamping member and the first support portion.

[0012] Optionally, the second support portion is provided with a second sliding groove extending along the first direction, wherein one of the first fixing members passes through the second sliding portion and the second sliding groove, and the first fixing member is at least partially slidable along the second sliding groove to adjust the relative position of the clamping portion and the second support portion. The first fixing member is also used to lock or unlock the relative position between the first clamping member and the second support portion, and / or the first fixing member is used to lock or unlock the relative position between the second clamping member and the second support portion.

[0013] Optionally, the base includes a body and two supports, the two supports being disposed on both sides of the body, the supports having mounting holes, and the end of the main body being rotatably connected to the mounting holes.

[0014] Optionally, the cell testing device further includes a second fixing member, which is disposed between the end of the bracket and the main body, and is used to lock or unlock the relative position between the main body and the bracket.

[0015] Optionally, the second fastener includes a fastener and a clamping block. The clamping block is located on the side of the bracket away from the main body. The clamping block has a through hole, and the fastener passes through the through hole and is threadedly connected to the end of the main body.

[0016] In the embodiments of this application, the cell testing device includes: a base, a support member, a first clamping member, and a second clamping member. The support member is rotatably connected to the base. The cell testing device has a first direction. The first clamping member and the second clamping member are slidably connected to the support member along the first direction. A clamping space is formed between the first clamping member and the second clamping member, which is used to accommodate the cell to be tested. The first clamping member and the second clamping member can move closer or further apart relative to each other along the first direction to adjust the size of the clamping space. In this way, the size of the clamping space can be adjusted by moving the first clamping member and / or the second clamping member, thereby clamping and fixing cell to be tested of different sizes, which is convenient for testing cell to be tested of different sizes. At the same time, since the support member is rotatably connected to the base, it is more convenient to adjust the position of the cell to be tested by rotating the support member around its rotation center, which improves the work efficiency and makes the cell testing device more applicable.

[0017] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of a battery cell testing device clamping a battery cell under test according to an embodiment of this application;

[0020] Figure 2 This is a schematic diagram of the structure of a battery cell testing device according to an embodiment of this application;

[0021] Figure 3 This is an exploded view of a battery cell testing device according to an embodiment of this application;

[0022] Figure 4 This is a partial installation schematic diagram of the battery cell testing device according to an embodiment of this application;

[0023] Figure 5 This is a partial structural schematic diagram of a battery cell testing device according to an embodiment of this application;

[0024] Figure 6 This is an exploded view of a battery cell testing device according to an embodiment of this application.

[0025] Figure label:

[0026] 1: Base; 11: Body; 111: Base; 112: Support plate; 113: Connector; 12: Bracket; 121: Mounting hole; 122: Dial; 21: Clamping space; 22: Support; 221: Main body; 2211: Mounting groove; 222: First support; 2221: First slide groove; 223: Second support; 2231: Second slide groove; 224: Scale; 23a: First clamping member; 23b: Second clamping member; 231: Clamping part; 232: First sliding part; 233: Second sliding part; 234: Through hole; 24: First fixing member; 241: Bolt; 242: Nut; 3: Battery cell under test; 4: Second fixing member; 41: Fastener; 42: Clamping block; 421: Through hole; 5: Third fixing member; X: First direction; Y: Second direction; Z: Third direction. Detailed Implementation

[0027] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0028] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0029] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] The battery cell testing device provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments of this application, a battery cell testing device is proposed, including: a base 1, a support member 22, a first clamping member 23a and a second clamping member 23b. The support member 22 is rotatably connected to the base 1. The battery cell testing device has a first direction X. The first clamping member 23a and the second clamping member 23b are slidably connected to the support member 22 along the first direction X. A clamping space 21 is formed between the first clamping member 23a and the second clamping member 23b. The clamping space 21 is used to accommodate the battery cell 3 to be tested. The first clamping member 23a and the second clamping member 23b can move closer or further apart along the first direction X to adjust the size of the clamping space 21.

[0033] In this embodiment, by moving the relative position between the first clamping member 23a and the second clamping member 23b along the first direction X, the first clamping member 23a and the second clamping member 23b are moved closer or further apart to adjust the size of the clamping space 21, thereby clamping and fixing the battery cells 3 to be tested of different sizes, which facilitates the testing of battery cells 3 to be tested of different sizes; at the same time, since the support member 22 is rotatably connected to the base 1, by rotating the support member 22 around its rotation center axis, it is more convenient to adjust the position of the battery cell 3 to be tested, improving the work efficiency and making it more widely applicable.

[0034] It should be explained that the first direction X specifically refers to the direction of the rotation center axis when the support member 22 rotates relative to the base 1. For example, as shown in the figure... Figure 1 and Figure 2 As shown, when the support member 22 rotates relative to the base 1 in a horizontal direction, the first direction X is the horizontal direction. Of course, it can also be other directions, depending on the direction of the rotation center axis of the support member 22 relative to the base 1 during actual operation.

[0035] Understandably, the first direction X, which is the direction of the rotation center axis of the support member 22, specifically refers to the rotation center between the support member 22 and the base 1, which forms an axis, and the direction of the axis is the X direction. In actual use, after the battery cell 3 under test is clamped and fixed by the clamping space 21, since there are multiple test parts, and these multiple test parts are located in different parts of the battery cell 3 under test, by rotating the support member 22, the center of the test part can be aligned with the X-ray source.

[0036] In practical applications, the base 1 is fixedly installed at a preset position, and the battery cell 3 to be tested is placed in the clamping space 21. By adjusting the size of the clamping space 21, the battery cell 3 to be tested is clamped and fixed. The support member 22 is adjusted to rotate around the first direction X, so that the part of the battery cell 3 to be tested is on the same straight line as the X-ray source of the CT detection equipment. This ensures that the battery cell 3 to be tested can be in the preset position in multiple different parts to be tested, thereby ensuring that the collected three-dimensional model signal of the battery cell 3 to be tested is more stable and the imaging is clearer. At the same time, by adjusting the size of the clamping space 21, it can accommodate battery cells 3 of different sizes, improving the applicability of the battery cell testing device. Compared with related technologies, it can reduce the time required to change the fixture, reduce the cumbersomeness of the operation, and improve the efficiency of the testing operation.

[0037] It should be explained that the support member 22 is rotatably connected to the base 1. This can be achieved by having a rotating shaft on the support member 22 and a rotating hole on the base 1, with the rotating shaft rotatably connected within the rotating hole; or by having a rotating hole on the support member 22 and a rotating shaft on the base 1, with the rotating shaft rotatably connected within the rotating hole. Those skilled in the art can configure this according to actual needs, and this application does not impose any restrictions on this.

[0038] It should be explained that the first clamping member 23a and the second clamping member 23b can be slidably connected to the support member 22 along the first direction X. Adjusting the relative position between the first clamping member 23a and the second clamping member 23b, that is, moving the first clamping member 23a and the second clamping member 23b to make them closer to each other or further apart, can increase or decrease the clamping space 21 formed between the first clamping member 23a and the second clamping member 23b, so as to adapt to the test cells 3 of different sizes.

[0039] In specific applications, the battery cell 3 under test is clamped and secured along the first direction X by the first clamping member 23a and the second clamping member 23b. At the same time, the support member 22 can also provide support force to the battery cell 3 under test in another direction, thereby ensuring the stability of the battery cell 3 under test during the testing process, making the imaging results of the battery cell 3 under test clearer during the testing process, and thus improving the accuracy of the testing results of the battery cell 3 under test.

[0040] In some embodiments of this application, a third clamping member and a fourth clamping member are also included. Both the third and fourth clamping members are slidably connected to the support member 22 along the first direction X. Multiple clamping spaces 21 are formed between adjacent clamping members to accommodate multiple battery cells 3 to be tested. Adjacent clamping members can move closer to or further away from each other to adjust the size of the clamping spaces 21. This allows for the simultaneous clamping and testing of multiple battery cells 3 to be tested, improving operational efficiency.

[0041] like Figure 3 , Figure 5 and Figure 6 As shown, in some embodiments of this application, the support member 22 includes a main body 221, a first support member 222, and a second support member 223. The main body 221 is rotatably connected to the base 1. The cell detection device also has intersecting second direction Y and third direction Z, both of which are perpendicular to the first direction X. One end of the first support member 222 and one end of the second support member 223 are respectively connected to the main body 221. The other end of the first support member 222 extends along the second direction Y, and the other end of the second support member 223 extends along the third direction Z. The first clamping member 23a and the second clamping member 23b are slidably connected to the first support member 222; and / or, the first clamping member 23a and the second clamping member 23b are slidably connected to the second support member 223.

[0042] In this embodiment, the main body 221 is rotatably connected to the base 1, thereby enabling the battery cell 3 under test to rotate relative to the base 1. One end of the first support 222 and one end of the second support 223 are respectively connected to the main body 221. The other end of the first support 222 extends along the second direction Y, and the other end of the second support 223 extends along the third direction Z, so that the first support 222 and the second support 223 respectively provide support for the battery cell 3 under test in different directions. In this way, the first clamping member 23a and the second clamping member 23b clamp and fasten the battery cell 3 under test along the rotation center axis of the support member 22. At the same time, in the other two directions, the first support 222 and the second support 223 respectively provide support force to the battery cell 3 under test, thereby ensuring the stability of the battery cell 3 under test, making the imaging result of the battery cell 3 under test clearer during the testing process, and thus improving the accuracy of the testing result of the battery cell 3 under test.

[0043] It needs to be explained that both the second direction Y and the third direction Z are perpendicular to the first direction X. In other words, the second direction Y and the third direction Z can be any direction perpendicular to the first direction X, such as... Figure 1 and Figure 2 As shown, when the first direction X is horizontal, the second direction Y and the third direction Z are two intersecting directions in the vertical plane.

[0044] It should be explained that the intersection of the second direction Y and the third direction Z can be either perpendicular to the second direction Y and the third direction Z, or it can be that the second direction Y and the third direction Z form an angle, with the angle being between 90° and 5°. Those skilled in the art can set it according to actual needs, and this application does not impose any restrictions on it.

[0045] Understandably, the shape formed by the intersection of the first support portion 222 and the second support portion 223 is adapted to the external shape of the battery cell 3 under test, thereby increasing the contact area between the battery cell 3 under test and the support member 22, ensuring the stability of the battery cell 3 under test during the testing process, and improving the reliability of the battery cell testing device.

[0046] For example, when the battery cell 3 under test is a polygonal battery cell, the second direction Y and the third direction Z are parallel to the plane containing two adjacent sides of the polygonal battery cell, thereby ensuring that the first support portion 222 and the second support portion 223 provide good support for the battery cell 3 under test. For example, when the battery cell 3 under test is a pentagonal prism battery cell, the angle between the second direction Y and the third direction Z is 108°; when the battery cell 3 under test is a hexagonal prism battery cell, the angle between the second direction Y and the third direction Z is 120°. Of course, the battery cell 3 under test can also be a battery cell of other shapes, as long as the shape formed by the first support portion 222 and the second support portion 223 is compatible with the battery cell.

[0047] like Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown in some embodiments of this application, a scale 224 is provided at the end of the first support 222 and the second support 223 away from the main body 221. The scale 224 has a zero mark at its center. In actual use, this makes it easy to align the centerline of the cell 3 under test with the zero mark of the scale, thereby moving the first clamping member 23a and the second clamping member 23b to clamp the cell 3 under test. This ensures that the center position of the cell 3 under test coincides with the center position of the clamping space 21, so that the cell 3 under test of different sizes can be stably positioned in the center of the test window. This can improve the accuracy of the test and reduce the time wasted due to debugging and the wear and tear on the filament life caused by frequent switching of the X-ray source.

[0048] For example, taking the CT test of a 104Ah battery cell 3 as an example, the battery cell 3 is first placed in the clamping space 21, and the center line of the battery cell 3 is aligned with the zero mark on the scale 224. The first clamping member 23a and the second clamping member 23b are moved and clamped to secure the battery cell 3. At this time, the corresponding degrees of the first clamping member 23a and the second clamping member 23b on the scale 224 are -2.6cm and +2.6cm, respectively. This ensures that the battery cell 3 is in the preset test position and reduces the risk of the battery cell 3 falling off during the test.

[0049] like Figure 3 , Figure 5 and Figure 6 As shown, in some embodiments of this application, the main body 221 is provided with a mounting groove 2211, and the first support 222 and the second support 223 are detachably connected to the mounting groove 2211, so that the rotation of the main body 221 can drive the first support 222 and the second support 223 to rotate. At the same time, it is convenient to install, disassemble and repair the battery cell testing device.

[0050] In specific applications, the shape of the mounting groove 2211 is adapted to the shape formed by the connection of the first support 222 and the second support 223. For example, the mounting groove 2211 is a groove with two mutually perpendicular groove walls. Then the extension directions of the first support 222 and the second support 223 are also perpendicular to each other, thereby ensuring the stability during installation and the reliability of the battery cell 3 under test during testing.

[0051] like Figure 5 and Figure 6 As shown, in some embodiments of this application, the cell testing device further includes a third fixing member 5, which is used to detachably connect the first support 222 and the second support 223 to the mounting groove 2211.

[0052] In a specific application, the third fastener 5 is a bolt, and the mounting groove 2211 is provided with a threaded hole. The bolt is screwed into the threaded hole to detachably connect the first support part 222 and the second support part 223 to the mounting groove 2211.

[0053] It should be explained that the third fixing element 5 is specifically made of lead, so as to avoid affecting the test results of the battery cell 3 under test.

[0054] like Figure 4 and Figure 5 As shown, in some embodiments of this application, the extending direction of the first support portion 222 and the extending direction of the second support portion 223 are perpendicular to each other.

[0055] In this embodiment, by setting the extension direction of the first support 222 and the extension direction of the second support 223 to be perpendicular to each other, that is, the second direction Y and the third direction Z are perpendicular to each other, it can better adapt to the test cells 3 of different sizes, ensure the stability of the test cells 3 in the clamping space 21, and thus improve the accuracy of the test results.

[0056] In specific applications, the cell under test 3 is usually a cell of a power battery. The cell of a power battery has two mutually perpendicular outer surfaces. The first support 222 and the second support 223 are mutually perpendicular and are adapted to the two perpendicular outer surfaces of the cell of a square battery. This allows the cell under test 3 to have a larger contact area with the first support 222 and the second support 223 when it is placed in the clamping space 21, thereby improving the stability of the cell under test 3.

[0057] like Figure 5 and Figure 6 As shown, in some embodiments of this application, both the first clamping member 23a and the second clamping member 23b include a clamping portion 231 and a first sliding portion 232. The first sliding portion 232 is slidably connected to the first support portion 222, and the clamping portion 231 is connected to the first sliding portion 232. A clamping space 21 is formed between the clamping portions 231 of the first clamping member 23a and the second clamping member 23b. The first sliding portion 232 can move relative to the first support portion 222 to adjust the size of the clamping space 21.

[0058] In this embodiment, the first sliding portion 232 of the first clamping member 23a and the second clamping member 23b is slidably connected to the first support portion 222, thereby being able to move relative to the first support portion 222 to drive the clamping portion 231 to move, thereby adjusting the size of the clamping space 21 to clamp and fix the battery cell 3 to be tested in the clamping space 21, or to loosen and disassemble it; thus improving the applicability and convenience of the battery cell testing device.

[0059] In practical applications, the plane of the clamping part 231 is perpendicular to the rotation center axis of the support member 22, thereby forming a clamping space 21 that matches the outer surface of the battery cell 3 under test. Furthermore, by moving the first sliding part 232 along the first direction X, the clamping part 231 is moved, and the clamping parts 231 of the first clamping member 23a and the second clamping member 23b move closer or further apart, which can clamp or release the battery cell 3 under test.

[0060] It should be explained that the first sliding part 232 is slidably connected to the first support part 222, and the side surface of the first sliding part 232 facing the first support part 222 is parallel to the side surface of the first support part 222 facing the first sliding part 232, so that the first sliding part 232 can move more smoothly relative to the first support part 222.

[0061] like Figure 5 and Figure 6 As shown, in some embodiments of this application, both the first clamping member 23a and the second clamping member 23b further include a second sliding part 233. The second sliding part 233 is connected to the clamping part 231 and the first sliding part 232. The second sliding part 233 is slidably connected to the second support part 223. The second sliding part 233 can move relative to the second support part 223 to adjust the size of the clamping space 21.

[0062] In this embodiment, the second sliding part 233 is slidably connected to the second support part 223. The second sliding part 233 can move relative to the second support part 223 to drive the clamping part 231 to move, thereby adjusting the size of the clamping space 21 to clamp and fix the battery cell 3 to be tested in the clamping space 21, or to loosen and disassemble it; thus improving the applicability and convenience of the battery cell testing device.

[0063] In specific applications, the first sliding part 232 and the second sliding part 233 are slidably connected to the first support part 222 and the second support part 223, respectively, so that when the first clamping member 23a and the second clamping member 23b slide along the first direction X, that is, along the rotation center axis of the support member 22, the sliding is more stable and smooth, ensuring the stability when the battery cell 3 under test is finally clamped and fastened.

[0064] Understandably, the angle between the first sliding part 232 and the second sliding part 233 is adapted to the angle between the first support part 222 and the second support part 223, thereby making the sliding more stable.

[0065] like Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments of this application, the cell testing device further includes a plurality of first fixing members 24; the first support portion 222 is provided with a first sliding groove 2221 extending along a first direction X, and one of the first fixing members 24 passes through the first sliding portion 232 and the first sliding groove 2221. The first fixing member 24 is at least partially able to slide along the first sliding groove 2221 to adjust the relative position of the clamping portion 231 and the first support portion 222. The first fixing member 24 is also used to lock or unlock the relative position between the first clamping member 23a and the first support portion 222, and / or, the first fixing member 24 is used to lock or unlock the relative position between the second clamping member 23b and the first support portion 222.

[0066] In this embodiment, the first fixing member 24 passes through the first sliding portion 232 and the first sliding groove 2221. The first fixing member 24 can slide at least partially along the first sliding groove 2221. Thus, when the first clamping member 23a and the second clamping member 23b slide along the first direction X, that is, along the rotation center axis of the support member 22, the first fixing member 24 can play a certain guiding role, thereby ensuring that when the first clamping member 23a and the second clamping member 23b clamp the battery cell 3 under test, the first clamping member 23a and the second clamping member 23b... The 23b has a larger contact area with the cell under test 3, reducing the occurrence of scratches on the outer surface of the cell under test 3; at the same time, when the first clamping member 23a and the second clamping member 23b are in the preset position, the first fixing member 24 locks the relative position between the first clamping member 23a and the second clamping member 23b and the first support part 222 to ensure the stability of the cell under test 3 during testing; after the test is completed, the locking is released, the first clamping member 23a and the second clamping member 23b are removed to take away the cell under test 3.

[0067] like Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments of this application, the second support portion 223 is provided with a second slide groove 2231 extending along the first direction X, wherein a first fixing member 24 passes through the second sliding portion 233 and the second slide groove 2231. The first fixing member 24 is at least partially slidable along the second slide groove 2231 to adjust the relative position of the clamping portion 231 and the second support portion 223. The first fixing member 24 is also used to lock or unlock the relative position between the first clamping member 23a and the second support portion 223, and / or the first fixing member 24 is also used to lock or unlock the relative position between the second clamping member 23b and the second support portion 223.

[0068] In this embodiment, the first fixing member 24 passes through the second sliding portion 233 and the second sliding groove 2231. The first fixing member 24 is at least partially slidable along the second sliding groove 2231 to adjust the relative position of the clamping portion 231 and the second supporting portion 223. Thus, when the first clamping member 23a and the second clamping member 23b slide along the first direction X, that is, the rotation center axis direction of the supporting member 22, the first fixing member 24 can play a certain guiding role, thereby ensuring that when the first clamping member 23a and the second clamping member 23b clamp the battery cell 3 under test, the first... The clamping member 23a and the second clamping member 23b have a larger contact area with the battery cell 3 under test, reducing the occurrence of scratches on the outer surface of the battery cell 3 under test; at the same time, when the first clamping member 23a and the second clamping member 23b are in the preset position, the first fixing member 24 locks the relative position between the first clamping member 23a and the second clamping member 23b and the second support part 223 to ensure the stability of the battery cell 3 under test during testing; after the test is completed, the locking is released, and the first clamping member 23a and the second clamping member 23b are removed to take away the battery cell 3 under test.

[0069] In specific applications, the first fixing member 24 can be a separate member or at least partially integrally formed with the first clamping member 23a and the second clamping member 23b, so that the portion integrally formed with the first clamping member 23a and the second clamping member 23b can slide along the first slide groove 2221 and / or the second slide groove 2231.

[0070] like Figure 4 and Figure 6 As shown, the first fixing member 24 includes a bolt 241 and a nut 242. The first sliding part 232 and the second sliding part 233 are provided with through holes 234. The bolt 241 passes through the through hole 234 and the first sliding groove 2221 or the second sliding groove 2231. The bolt 241 can slide at least partially along the first sliding groove 2221 or the second sliding groove 2231. The nut 242 is screwed to the bolt 241, thereby facilitating the locking or unlocking of the relative position between the first clamping member 23a, the second clamping member 23b and the support member 22, so as to ensure the stability of the battery cell 3 under test during testing and to be quickly disassembled after testing.

[0071] It should be explained that the first fixing member 24 is made of lead, which can reduce the impact on the CT test results of the battery cell 3 under test.

[0072] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments of this application, the base 1 includes a body 11 and two supports 12. The two supports 12 are respectively disposed on both sides of the body 11. The supports 12 are provided with mounting holes 121, and the end of the main body 221 is rotatably connected to the mounting holes 121.

[0073] In this embodiment, the end of the main body 221 is rotatably connected to the mounting hole 121 of the bracket 12, so that when needed, the main body 221 can be rotated to drive the battery cell 3 under test to rotate, so that the center of the test part of the battery cell 3 under test is aligned with the X-ray source, thereby improving the accuracy of the test results.

[0074] It should be explained that the bracket 12 is detachably connected to the body 11, which facilitates the installation and removal of the main body 221.

[0075] In practical applications, a bearing is also provided between the mounting hole 121 and the end of the main body 221, thereby improving the stability of rotation and making the rotation smoother.

[0076] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments of this application, a scale 122 is provided on the side of the bracket 12 away from the first clamping member 23a and the second clamping member 23b. The first support part 222 and the second support part 223 cooperate with the scale 122 to determine the position of the battery cell 3 to be tested.

[0077] In practical applications, the scale 122 has angle markings. By using the orthographic projections of the first support 222 and the second support 223 onto the scale 122, the position of the battery cell 3 under test can be accurately identified, which facilitates the position adjustment of the battery cell 3 under test.

[0078] For example, taking the CT test of the 104Ah battery cell 3 as an example, the support 22 is rotated to the required 30° by the cooperation of the first support 222 and the second support 223 with the dial 122. At this time, the center point of the battery cell 3, the center of the main body 221 and the center point of the body 11 are on the same line, ensuring that the test part of the battery cell 3 is in the center position of the acquisition window of the detection device.

[0079] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments of this application, the main body 11 includes a base 111, a support plate 112, and a connector 113. The base 111 is installed on the bottom surface at a preset position. The support plate 112 is detachably connected to the end of the base 111 away from the ground. The connector 113 is detachably connected to the end of the support plate 112 away from the base 111. The bracket 12 is detachably connected to both sides of the connector 113, thereby ensuring the stability of the entire cell testing device during the testing of the cell 3 under test and avoiding interference with the test results.

[0080] like Figure 3 and Figure 4 As shown, in some embodiments of this application, the cell testing device further includes a second fixing member 4, which is disposed between the end of the bracket 12 and the main body 221. The second fixing member 4 is used to lock or unlock the relative position between the main body 221 and the bracket 12.

[0081] In this embodiment, the second fixing member 4 locks or unlocks the relative position between the main body 221 and the bracket 12, thereby ensuring that when the battery cell 3 under test is driven to rotate to the preset position, the second fixing member 4 locks the support member 22 and the bracket 12, preventing the battery cell 3 under test from falling off during the testing process.

[0082] like Figure 3 and Figure 4 As shown, in some embodiments of this application, the second fastener 4 includes a fastener 41 and a clamping block 42. The clamping block 42 is located on the side of the bracket 12 away from the main body 221. The clamping block 42 has a through hole 421. The fastener 41 passes through the through hole 421 and is threadedly connected to the end of the main body 221.

[0083] In this embodiment of the application, the fastener 41 passes through the through hole 421 of the clamping block 42 and is threadedly connected to the end of the main body 221, thereby enabling the main body 221 to be locked or unlocked from the bracket 12. The clamping block 42 can increase the contact area between itself and the bracket 12, thereby increasing the friction between itself and the bracket 12 and ensuring the locking effect.

[0084] In specific applications, the fastener 41 is a bolt. The end of the main body 221 is provided with a threaded hole. The bolt passes through the through hole 421 and is threadedly connected to the threaded hole. When locking is required, the bolt is tightened to the threaded hole. The bolt presses the clamping block 42, so that a large frictional force is formed between the clamping block 42 and the bracket 12, thereby ensuring that the main body 221 will not rotate. When unlocking, the bolt is loosened from the threaded hole, and the main body 221 and the bracket 12 can rotate relative to each other, so as to adjust the position of the battery cell 3 under test.

[0085] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0086] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery cell testing device, characterized in that, include: The device comprises a base (1), a support (22), a first clamping member (23a), and a second clamping member (23b). The support (22) is rotatably connected to the base (1). The cell testing device has a first direction (X). The first clamping member (23a) and the second clamping member (23b) are slidably connected to the support (22) along the first direction (X). A clamping space (21) is formed between the first clamping member (23a) and the second clamping member (23b). The clamping space (21) is used to accommodate the cell (3) to be tested. The first clamping member (23a) and the second clamping member (23b) can move closer or further away from each other along the first direction (X) to adjust the size of the clamping space (21).

2. The cell testing device according to claim 1, characterized in that, The support member (22) includes a main body (221), a first support (222), and a second support (223), wherein the main body (221) is rotatably connected to the base (1); The cell testing device also has intersecting second direction (Y) and third direction (Z), both of which are perpendicular to the first direction (X). One end of the first support (222) and one end of the second support (223) are respectively connected to the main body (221). The other end of the first support (222) extends along the second direction (Y), and the other end of the second support (223) extends along the third direction (Z). The first clamping member (23a) and the second clamping member (23b) are slidably connected to the first support (222); and / or the first clamping member (23a) and the second clamping member (23b) are slidably connected to the second support (223).

3. The cell testing device according to claim 2, characterized in that, The extension direction of the first support (222) and the extension direction of the second support (223) are perpendicular to each other.

4. The cell testing device according to claim 2, characterized in that, Both the first clamping member (23a) and the second clamping member (23b) include a clamping part (231) and a first sliding part (232). The first sliding part (232) is slidably connected to the first support part (222), and the clamping part (231) is connected to the first sliding part (232). The clamping space (21) is formed between the clamping parts (231) of the first clamping member (23a) and the second clamping member (23b). The first sliding part (232) can move relative to the first support part (222) to adjust the size of the clamping space (21).

5. The cell testing device according to claim 4, characterized in that, Both the first clamping member (23a) and the second clamping member (23b) further include a second sliding part (233), the second sliding part (233) is connected to the clamping part (231) and the first sliding part (232), the second sliding part (233) is slidably connected to the second support part (223), and the second sliding part (233) can move relative to the second support part (223) to adjust the size of the clamping space (21).

6. The cell testing device according to claim 5, characterized in that, The cell testing device further includes a plurality of first fixing members (24); the first support portion (222) is provided with a first sliding groove (2221) extending along the first direction (X), wherein one of the first fixing members (24) passes through the first sliding portion (232) and the first sliding groove (2221), the first fixing member (24) is at least partially able to slide along the first sliding groove (2221) to adjust the relative position of the clamping portion (231) and the first support portion (222), the first fixing member (24) is also used to lock or unlock the relative position between the first clamping member (23a) and the first support portion (222), and / or the first fixing member (24) is used to lock or unlock the relative position between the second clamping member (23b) and the first support portion (222).

7. The cell testing device according to claim 6, characterized in that, The second support portion (223) is provided with a second slide groove (2231) extending along the first direction (X), wherein a first fixing member (24) passes through the second sliding portion (233) and the second slide groove (2231). The first fixing member (24) is at least partially slidable along the second slide groove (2231) to adjust the relative position of the clamping portion (231) and the second support portion (223). The first fixing member (24) is also used to lock or unlock the relative position between the first clamping member (23a) and the second support portion (223), and / or the first fixing member (24) is used to lock or unlock the relative position between the second clamping member (23b) and the second support portion (223).

8. The cell testing device according to claim 2, characterized in that, The base (1) includes a body (11) and two supports (12). The two supports (12) are respectively disposed on both sides of the body (11). The supports (12) are provided with mounting holes (121). The end of the main body (221) is rotatably connected to the mounting holes (121).

9. The cell testing device according to claim 8, characterized in that, The cell testing device further includes a second fixing member (4), which is disposed between the end of the bracket (12) and the main body (221). The second fixing member (4) is used to lock or unlock the relative position between the main body (221) and the bracket (12).

10. The cell testing device according to claim 9, characterized in that, The second fastener (4) includes a fastener (41) and a clamping block (42). The clamping block (42) is located on the side of the bracket (12) away from the main body (221). The clamping block (42) has a through hole (421). The fastener (41) passes through the through hole (421) and is threaded to the end of the main body (221).

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