Lithium battery detection tool and equipment

Abstract

The utility model discloses a lithium battery detection tool and equipment, the tool comprises an object placing seat, a pressing plate assembly and M pressure adjusting pieces, M is greater than or equal to 2, and M is a positive integer. And the storage seat is provided with a working surface for placing a battery. The pressure adjusting piece is provided with a power output part. The pressing plate assembly comprises at least one adjusting pressing plate, the adjusting pressing plates and the working face are oppositely arranged, the M pressure adjusting pieces are arranged at intervals, and a power output part of at least one of the M pressure adjusting pieces enables the adjusting pressing plates to be close to or away from the working face. By adjusting the pressure of each area or position in the battery, the pressure of each area or position of the battery is equal, and the pressure value of each area or position of the battery is equal, so that the battery expansive force parameter of each area or position of the battery is accurately controlled, the local expansive force of the battery is prevented from being too large or too small, and the service life of the battery is prolonged. The service life and the cycle performance of the battery are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a lithium battery detection tooling and equipment. Background Art

[0002] The technology of lithium batteries has developed rapidly. In various battery fields, higher requirements are imposed on the battery performance and safety, and the energy density is also getting higher and higher, and the requirements for the cycle performance are becoming more and more stringent. Therefore, it is very necessary to test and analyze the expansion force generated during the charging and discharging process of lithium-ion batteries for the research on the battery safety performance.

[0003] In the related art, the lithium battery detection tooling includes a pressing plate, and the pressure applied by the pressing plate to each area of the battery cell is not equal, resulting in inaccurate test results. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, an object of the utility model is to provide a lithium battery detection tooling and equipment, which can adjust the pressure magnitude of each area or position in the battery, contribute to the equality of the pressure of each area or position in the battery, ensure that the pressure values of each area or position in the battery are equal, thereby accurately controlling the battery expansion force parameters of each area or position in the battery, avoiding excessive or too small expansion force in local areas of the battery, and improving the battery service life and cycle performance.

[0005] A lithium battery detection tooling according to an embodiment of the first aspect of the utility model includes: a placement seat, a pressing plate assembly and M pressure adjusting members, where M≥2 and M is a positive integer.

[0006] The placement seat is provided with a working surface for placing the battery. The pressure adjusting member is provided with a power output part.

[0007] The pressing plate assembly includes at least one adjusting pressing plate, the adjusting pressing plate is disposed opposite to the working surface, M pressure adjusting members are arranged at intervals, and the power output part of at least one of the M pressure adjusting members enables the adjusting pressing plate to approach or move away from the working surface.

[0008] In this embodiment, a regulating pressing plate is connected to the power output part of each pressure regulating part. Since the movements of the respective regulating pressing plates are independent, the pressure applied by each regulating pressing plate to the battery can be adjusted, which helps to make the pressures in various regions or positions of the battery equal. Alternatively, a first regulating part and a plurality of second regulating parts are arranged in an array. The first regulating part enables the regulating pressing plate to approach or move away from the working surface. At the same time, the plurality of second regulating parts can abut against the surface of the regulating pressing plate facing away from the placement seat. Since each second regulating part can independently adjust the pressure in a region or position of the battery, it helps to make the pressures in various regions or positions of the battery equal. In practical applications, each pressure regulating part or the second regulating part is adjusted based on a pressure sensor, so as to accurately control the battery expansion force parameters in various regions or positions of the battery, avoid excessive or too small expansion force in a local part of the battery, and improve the service life and cycling performance of the battery.

[0009] According to some embodiments of the present invention, one of the regulating pressing plates is provided.

[0010] M pressure regulating parts are arranged in an array. The power output part of one of the M pressure regulating parts enables the regulating pressing plate to approach or move away from the working surface, and the power output parts of the remaining M pressure regulating parts can abut against the surface of the regulating pressing plate facing away from the placement seat.

[0011] According to some embodiments of the present invention, the regulating pressing plate has a regular geometric shape.

[0012] The orthographic projection of the one of the M pressure regulating parts that moves the regulating pressing plate on the regulating pressing plate is located at the center of the regulating pressing plate, and the remaining M pressure regulating parts are arranged around the one at equal intervals.

[0013] According to some embodiments of the present invention, the pressing plate assembly further includes a first limiting part, and the first limiting part has a first surface and a second surface arranged oppositely, and the second surface faces the working surface.

[0014] The power output part of one of the M pressure regulating parts is connected to the first surface, and a first groove is provided on the second surface, and the regulating pressing plate is installed in the first groove.

[0015] According to some embodiments of the present invention, the edge of the regulating pressing plate is welded and connected in the first groove.

[0016] According to some embodiments of the present utility model, M - 1 mounting portions are provided on the first surface, the mounting portions penetrate through the first surface and the bottom of the first groove, and one pressure adjusting member is provided on each mounting portion, and the power output portion of the pressure adjusting member abuts against the surface of the adjusting pressing plate facing away from the object placing seat.

[0017] According to some embodiments of the present utility model, the mounting portion includes a first long hole, and M - 1 first long holes are arranged at equal intervals around the center of the adjusting pressing plate.

[0018] The pressure adjusting member can move in the first long hole, so that the distance between the pressure adjusting member and the center of the adjusting pressing plate is adjustable.

[0019] According to some embodiments of the present utility model, the mounting portion includes a receiving chamber, and M - 1 receiving chambers are arranged at equal intervals around the center of the adjusting pressing plate.

[0020] The pressing plate assembly further includes M - 1 inserting bodies, each inserting body is provided with a second long hole, and each inserting body is inserted into a receiving chamber.

[0021] According to some embodiments of the present utility model, when there are M adjusting pressing plates.

[0022] The M adjusting pressing plates are arranged in an array, and the orthographic projection of any one of the M adjusting pressing plates on the object placing seat is located on the working surface.

[0023] The pressure adjusting members correspond to the adjusting pressing plates one by one, and the power output portion of each pressure adjusting member is connected to an adjusting pressing plate, so that the adjusting pressing plate can approach or move away from the working surface.

[0024] A lithium - battery detection device according to an embodiment of the second aspect of the present utility model includes a sensor and the lithium - battery detection tooling in the first aspect. The sensor is connected to the battery provided on the lithium - battery detection tooling and is used to sense the change in the expansion force of the battery.

[0025] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above - mentioned and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0027] Figure 1 is the front view of the lithium - battery detection tooling according to the embodiment of the present utility model;

[0028] Figure 2 is an axonometric view of a lithium battery detection tooling according to an embodiment of the present utility model;

[0029] Figure 3 is a schematic structural view of a pressing plate assembly according to an embodiment of the present utility model;

[0030] Figure 4 is Figure 3 a sectional view taken along the A-A direction of

[0031] Figure 5 is a schematic structural view of a first limiting member according to an embodiment of the present utility model;

[0032] Figure 6 is a schematic structural view of another first limiting member according to an embodiment of the present utility model;

[0033] Figure 7 is a schematic structural view of still another first limiting member according to an embodiment of the present utility model;

[0034] Figure 8 is a schematic structural view of yet another first limiting member according to an embodiment of the present utility model;

[0035] Figure 9 is Figure 7 or Figure 8 a sectional view taken along the B-B direction of

[0036] Figure 10 is a schematic structural view of an arrangement of a plurality of adjusting pressing plates according to an embodiment of the present utility model;

[0037] Figure 11 is a schematic structural view of another arrangement of a plurality of adjusting pressing plates according to an embodiment of the present utility model;

[0038] Reference numerals:

[0039] placement seat 10, working surface 101;

[0040] pressing plate assembly 20, first limiting member 21, first surface 201, second surface 202, first groove 211, threaded hole 212, guiding hole 213, locking hole 214, accommodating chamber 215, first long hole 216, inserting body 22, second long hole 221, adjusting pressing plate 23;

[0041] pressure adjusting member 30, first adjusting member 31, second adjusting member 32;

[0042] second limiting member 40, slider 41, guide rail 42, clamping jaw 43;

[0043] guide post 50, locking portion 51;

[0044] Support frame 60, first support plate 61, and second support plate 62. Specific implementation manner

[0045] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0046] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the applicability of other processes and / or the use of other materials.

[0047] As Figures 1 - 11 shown, a lithium battery detection tooling according to an embodiment of the present invention includes: a placement seat 10, a pressing plate assembly 20, and M pressure adjusting members 30, where M≥2 and M is a positive integer.

[0048] The placement seat 10 is provided with a working surface 101 for placing the battery; the pressure adjusting member 30 is provided with a power output portion.

[0049] The pressing plate assembly 20 includes at least one adjusting pressing plate 23, and the adjusting pressing plate 23 is disposed opposite to the working surface 101. The M pressure adjusting members 30 are arranged at intervals, and the power output portion of at least one of the M pressure adjusting members 30 enables the adjusting pressing plate 23 to approach or move away from the working surface 101.

[0050] Among them, the adjusting pressing plate 23 can be an elastic thin plate, and the pressure of the adjusting pressing plate 23 pressing against the battery is changed by the deformation degree of the thin plate.

[0051] The pressure adjusting member 30 can be a lead screw mechanism, and its power output portion is a sliding member on the lead screw; the pressure adjusting member 30 can be a hydraulic lifting mechanism, and its power output portion is a piston; the pressure adjusting member 30 can be a pneumatic lifting mechanism, and its power output portion is a piston; the pressure adjusting member 30 can be a bolt, and its power output portion is one end of the bolt; the pressure adjusting member 30 can be a screw rod, and its power output portion is one end of the screw rod;..., and the present embodiment will not list them one by one.

[0052] In the first embodiment, there are M adjusting pressing plates 23. M can be 2, 3, 4, 5, 6, ……, and M is a positive integer.

[0053] The M adjusting pressing plates 23 are arranged in an array. The orthographic projection of any one of the M adjusting pressing plates 23 on the object placing seat 10 is such that the projection of any one of them is located on the working surface 101. The pressure adjusting members 30 correspond to the adjusting pressing plates 23 one by one, and the power output part of each pressure adjusting member 30 is connected to an adjusting pressing plate 23, so that the adjusting pressing plate 23 can approach or move away from the working surface 101.

[0054] As Figure 10 shown, M = 4, and the 4 adjusting pressing plates 23 are arranged in a rectangular array. The 4 adjusting pressing plates 23 respectively correspond to 4 first areas on the working surface 101 of the object placing seat 10.

[0055] The power output part of each pressure adjusting member 30 is connected to an adjusting pressing plate 23, so that the adjusting pressing plate 23 reciprocates along the C1 direction, and thus the adjusting pressing plate 23 can press against the battery. Since the movements of the respective adjusting pressing plates 23 are independent, the magnitude of the pressure applied by each adjusting pressing plate 23 to the battery can be adjusted individually, which helps to make the pressure equal in each area or position of the battery.

[0056] In practical applications, 4 pressure sensors can be provided on the battery, and each pressure sensor corresponds to one of the above-mentioned first areas. The pressure sensor can be a high-precision thin film sensor, which is attached to the surface of the battery. Based on the pressure sensors, each pressure adjusting member 30 is adjusted, so as to accurately control the battery expansion force parameters in each area or position of the battery, avoid excessive or too small expansion force in local areas of the battery, and improve the service life and cycle performance of the battery.

[0057] In the second embodiment, there is one adjusting pressing plate 23. The adjusting pressing plate 23 and the object placing seat 10 are arranged oppositely. The power output part of one of the M pressure adjusting members 30 enables the adjusting pressing plate 23 to approach or move away from the working surface 101, and the power output parts of the remaining M pressure adjusting members 30 can abut against the surface of the adjusting pressing plate 23 facing away from the object placing seat 10.

[0058] As Figures 1 - 5As shown, there are 5 pressure adjusting members 30: 1 first adjusting member 31 and 4 second adjusting members 32. The second adjusting members 32 can be the same as the first adjusting member 31. The 4 second adjusting members 32 are arranged equidistantly around the first adjusting member 31. The power output part of the first adjusting member 31 can directly or indirectly enable the adjusting pressing plate 23 to move along the C1 direction. The power output parts of the 4 second adjusting members 32 can abut against the surface of the adjusting pressing plate 23 facing away from the placing seat 10, and the power output parts of the 4 second adjusting members 32 respectively correspond to 4 second areas on the surface of the adjusting pressing plate 23 facing away from the placing seat 10.

[0059] The adjusting pressing plate 23 is in a regular geometric shape, and can be a rectangular plate, a circular plate, an oval plate,.... As Figures 3 - 5 shown, the first adjusting member 31 is orthographically projected on the adjusting pressing plate 23, and the projection of the first adjusting member 31 is located at the center of the adjusting pressing plate 23. Such a setting helps the adjusting pressing plate 23 to approach or move away from the placing seat 10 along the C1 direction.

[0060] Of course, it can be understood that in some embodiments, the first adjusting member 31 is orthographically projected on the adjusting pressing plate 23, and the projection of the first adjusting member 31 may not be located at the center of the adjusting pressing plate 23. The 5 pressure adjusting members 30 can be arranged in a rectangular array.

[0061] Among them, as Figure 2 shown, the first adjusting member 31 can be a lead screw mechanism, a hydraulic lifting mechanism, or a pneumatic lifting mechanism. The second adjusting member 32 is a bolt or a screw rod. Such a setting helps to reduce the manufacturing cost and lower the production cost of the lithium battery detection tooling.

[0062] In this embodiment, one first adjusting member 31 and multiple second adjusting members 32 are arranged in an array. The first adjusting member 31 enables the adjusting pressing plate 23 to approach or move away from the working surface 101. At the same time, the multiple second adjusting members 32 can abut against the surface of the adjusting pressing plate 23 facing away from the placing seat 10. Since each second adjusting member 32 can independently adjust the pressure magnitude of one area or position of the battery, it helps to make the pressure equal in each area or position of the battery.

[0063] In practical applications, 4 pressure sensors can be provided on the battery, and each pressure sensor corresponds to one of the above-mentioned second areas. The pressure sensor can be a high-precision thin film sensor and is attached to the surface of the battery. Based on the pressure sensors, each second adjusting member 32 is adjusted, so as to accurately control the battery expansion force parameters in each area or position of the battery, avoid excessive or too small expansion force in local areas of the battery, and improve the service life and cycle performance of the battery.

[0064] The following embodiments are described with the second embodiment:

[0065] In some embodiments of the present utility model, the pressing plate assembly 20 further includes a first limiting member 21, and the first limiting member 21 is used to limit the degree of freedom of the battery in the C1 direction.

[0066] Specifically, as Figures 3 - 5 shown, the first limiting member 21 has a first surface 201 and a second surface 202 arranged oppositely, the second surface 202 faces the working surface 101, and a first groove 211 is provided on the second surface 202, and the adjusting pressing plate 23 is installed in the first groove 211.

[0067] The power output part of the first adjusting member 31 is connected to the first surface 201, so that the first limiting member 21 moves in the C1 direction. An installation part is provided on the first surface 201, and the installation part penetrates through the first surface 201 and the bottom of the first groove 211. The number of installation parts is M - 1, and the installation parts correspond to the second adjusting members 32 one by one.

[0068] As shown in the figure, the installation part can be a threaded hole 212, and the second adjusting member 32 is a bolt. The bolt is arranged in the threaded hole 212, and one end of the bolt abuts against the surface of the adjusting pressing plate 23 facing away from the placing seat 10. In this way, both the first adjusting member 31 and the second adjusting member 32 are connected to the first limiting member 21. Of course, it can be understood that in addition to being a threaded hole 212, the installation part can also be a through hole or other suitable structures.

[0069] In practical applications, as Figure 2 shown, first, the power output part of the first adjusting member 31 drives the first limiting member 21 to approach the battery. The first limiting member 21 drives the second adjusting member 32 (bolt) and the adjusting pressing plate 23 connected thereto to approach the battery until the adjusting pressing plate 23 contacts the battery, and then the first adjusting member 31 stops working. At the current moment, the first limiting member 21 and the placing seat 10 clamp the battery, and the first limiting member 21 limits the degree of freedom of the battery in the C1 direction, so that the battery remains stationary. Then, each bolt (the second adjusting member 32) is adjusted. Since one end of the bolt abuts against the surface of the adjusting pressing plate 23 facing away from the placing seat 10, each second adjusting member 32 can independently adjust the pressure magnitude of a region or position of the battery, so that the pressures of each region or position of the battery are equal.

[0070] Of course, it can be understood that the pressing plate assembly 20 in the first embodiment can also include a first limiting member 21. As Figure 11 shown, referring to the above description, it will not be elaborated here.

[0071] Furthermore, as Figure 4 and Figure 5As shown, the adjusting pressing plate 23 is installed in the first groove 211. The edge of the adjusting pressing plate 23 can be welded to the inside of the first groove 211. On the one hand, this can make the adjusting pressing plate 23 installed in the first groove 211. On the other hand, it can make each area of the adjusting pressing plate 23 deform freely without applying too much force on a local part of the battery, which helps the adjusting pressing plate 23 apply an appropriate acting force on the battery.

[0072] Of course, it can be understood that the edge of the adjusting pressing plate 23 can be connected to the first groove 211 by bolts, or the edge of the adjusting pressing plate 23 can be connected to the first groove 211 by an insertion method, or the edge of the adjusting pressing plate 23 can be connected to the first groove 211 by a snap connection method.

[0073] Furthermore, the installation part includes M - 1 first long holes 216, and the M - 1 first long holes 216 are arranged at equal intervals around the center of the adjusting pressing plate 23. The bolt can move in the first long hole 216, so that the distance d between the bolt and the center of the adjusting pressing plate 23 can be adjusted.

[0074] In a specific embodiment, as Figure 6 shown, the first limiting member 21 can be plate - shaped, and 4 first long holes 216 are provided on the first surface 201. The 4 first long holes 216 are arranged in a divergent shape and are arranged at equal intervals around the center of the adjusting pressing plate 23. The bolt can move in the first long hole 216, so that the distance d between the bolt and the center of the adjusting pressing plate 23 can be adjusted.

[0075] In this way, when batteries of different sizes are arranged on the working surface 101 of the storage seat 10, the position of the bolt can be adjusted according to the size of the battery to better make the pressure on each position or area of the battery equal.

[0076] Furthermore, the installation part includes M - 1 accommodating chambers 215, and the M - 1 accommodating chambers 215 are arranged at equal intervals around the center of the adjusting pressing plate 23.

[0077] The pressing plate assembly 20 further includes M - 1 inserting bodies 22. Each inserting body 22 is provided with a second long hole 221. Each inserting body 22 is arranged in one of the M - 1 accommodating chambers 215, and the inserting body 22 can rotate self - rotatably.

[0078] In a specific embodiment, as Figures 7 - 9As shown, the pressing plate assembly 20 includes an adjusting pressing plate 23, a first limiting member 21, and an inserting body 22. The first limiting member 21 can be plate-shaped. Four accommodating chambers 215 are provided on the first surface 201. A second groove is recessed on the first surface 201, and a hollow area communicating with the first groove 211 is provided at the bottom of the second groove, thereby forming the above-mentioned accommodating chambers 215. Among them, the second groove is a stepped groove, and the inserting body 22 is arranged on the upper stepped surface. The four accommodating chambers 215 are arranged at equal intervals around the center of the adjusting pressing plate 23.

[0079] The accommodating chambers 215 correspond to the inserting bodies 22 one by one, and the inserting bodies 22 are inserted into the accommodating chambers 215. Among them, a second long hole 221 is provided on the inserting body 22. The bolt can move within the second long hole 221, so that the distance d between the bolt and the center of the adjusting pressing plate 23 can be adjusted.

[0080] In this way, when batteries of different sizes are arranged on the working surface 101 of the object placing seat 10, the position of the second adjusting member 32 can be adjusted according to the size of the battery, so as to better make the pressure equal at each position or area of the battery. In addition, since the accommodating chambers 215 and the inserting bodies 22 are detachably arranged, a variety of inserting bodies 22 can be provided, and each inserting body is provided with a second long hole 221. As Figure 7 or Figure 8 shown, different specifications of bolts are matched with different inserting bodies 22, so that bolts of different specifications can be installed in the second long holes 221. Thus, the appropriate bolts can be selected according to the size of the battery.

[0081] Furthermore, the lithium battery detection tooling further includes a guide post 50. The guide post 50 is in guiding cooperation with the first limiting member 21 to guide the first limiting member 21 to move along the C1 direction. Such a setting can limit the degree of freedom of the adjusting pressing plate 23, so that the adjusting pressing plate 23 can move closer to or away from the object placing seat 10 along a straight line direction.

[0082] In a specific embodiment, as Figure 2 shown, the lithium battery detection tooling further includes a support frame 60. The support frame 60 includes a first support plate 61 and a second support plate 62. The second support plate 62, the first limiting member 21, and the object placing seat 10 are arranged in sequence along the C1 direction. The first support plate 61 is perpendicular to the second support plate 62, and the first support plate 61 connects the second support plate 62 and the object placing seat 10.

[0083] As Figure 3As shown in the figure, guide holes 213 are respectively provided around the first surface 201 of the first limiting member 21. The guide posts 50 correspond to the guide holes 213 one by one. The guide posts 50 and the first limiting member 21 are in guiding cooperation through the guide holes 213, so that the first limiting member 21 approaches or moves away from the object placing seat 10 along the C1 direction, and further the adjusting pressing plate 23 can approach or move away from the object placing seat 10 along the C1 direction. Among them, one end of the guide post 50 is installed on the first support plate 61, and the other end is installed on the object placing seat 10.

[0084] As Figure 2 and Figure 3 shown in the figure, a locking portion 51 is provided on the guide post 50. The locking portion 51 may include a flat surface, a threaded hole, and a through hole. Correspondingly, 4 locking holes 214 are provided on the side surface of the first limiting member 21. One locking hole 214 corresponds to one guide hole 213 one by one, and the two are communicated. The fastener can pass through the locking hole 214 and cooperate with the locking portion 51 on the guide post 50 to lock the first limiting member 21 on the guide post 50. At the current moment, the first limiting member 21 cannot slide along the guide post 50. With such a setting, the limiting effect of the first limiting member 21 on the battery in the C1 direction is improved, and further the battery is kept stationary.

[0085] In some embodiments of the present invention, a second limiting member 40 is provided on the object placing seat 10. The second limiting member 40 is used to limit the freedom degree of the battery in the C2 direction, so that the battery remains stationary.

[0086] As Figure 2 shown in the figure, the second limiting member 40 includes a guide rail 42, a slider 41, and two relatively arranged clamping jaws 43. The slider 41 and the guide rail 42 are arranged on opposite sides of the object placing seat 10. The two clamping jaws 43 are relatively arranged on the other side of the object placing seat 10, and the slider 41 and the guide rail 42 are in sliding cooperation. For example, the guide rail 42 can be set as a dovetail groove, and the shape of the slider 41 is adapted to it. The slider 41 can connect the clamping jaws 43 through bolts, etc. When the slider 41 slides along the guide rail 42, it can drive the two clamping jaws 43 to move synchronously, so that the two clamping jaws 43 can approach or move away from each other. In this way, on the one hand, the freedom degree of the battery in the C2 direction can be limited, and on the other hand, batteries of different sizes can be clamped.

[0087] According to an embodiment of the present invention, a lithium battery detection device is further provided, including a sensor and the above-mentioned lithium battery detection tooling. The sensor is connected to the battery provided on the lithium battery detection tooling and is used to sense the change in the expansion force of the battery.

[0088] The lithium battery detection device has the advantages of the lithium battery detection tooling, so it will not be elaborated here.

[0089] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0090] In the description of the present utility model, the "first feature" and the "second feature" may include one or more of such features.

[0091] In the description of the present utility model, the meaning of "a plurality of" is two or more.

[0092] In the description of the present utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween.

[0093] In the description of the present utility model, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal width of the first feature is higher than that of the second feature.

[0094] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", "some examples", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0095] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A lithium battery testing tool, characterized in that: include: A storage seat (10), a pressure plate assembly (20) and M pressure adjustment members (30), M≥2, M being a positive integer; The storage seat (10) is provided with a working surface (101) for placing batteries; The pressure regulating member (30) is provided with a power output portion; The pressure plate assembly (20) comprises at least one adjusting pressure plate (23), the adjusting pressure plate (23) being arranged opposite to the working surface (101), M pressure adjusting members (30) being arranged at intervals, and a power output portion of at least one of the M pressure adjusting members (30) enabling the adjusting pressure plate (23) to be moved closer to or farther from the working surface (101).

2. The lithium battery testing tool according to claim 1, characterized in that: When one of the adjustment pressing plates (23) is provided, M of the pressure adjusting members (30) are arranged in an array, a power output portion of one of the M pressure adjusting members (30) enables the adjusting pressure plate (23) to be moved closer to or farther from the working surface (101), and a power output portion of the remaining M of the pressure adjusting members (30) can abut against a surface of the adjusting pressure plate (23) that is opposite to the storage seat (10).

3. The lithium battery testing tool according to claim 2, characterized in that: The regulating plate (23) has a regular geometric shape. One of the M pressure adjusting members (30) that causes the adjusting plate (23) to move is projected onto the adjusting plate (23), the projection of the one being located at the center of the adjusting plate (23), and the remaining ones of the M pressure adjusting members (30) are arranged around the one at equal intervals.

4. The lithium battery testing tool according to claim 3, characterized in that: The pressing plate assembly (20) further comprises a first limiting member (21), The first limiting member (21) comprises a first surface (201) and a second surface (202) which are arranged opposite to each other, and the second surface (202) faces the working surface (101). A power output portion of one of the M pressure regulating members (30) is connected to the first surface (201), The second surface (202) is provided with a first groove (211), and the regulating pressing plate (23) is installed in the first groove (211).

5. The lithium battery testing tool according to claim 4, characterized in that: The edge of the regulating pressing plate (23) is welded into the first groove (211).

6. The lithium battery testing tool according to claim 4, characterized in that: The first surface (201) is provided with M-1 mounting portions, and the mounting portions penetrate the first surface (201) and the bottom of the first groove (211). A pressure regulating member (30) is provided on each of the mounting parts, and a power output portion of the pressure regulating member (30) abuts against a surface of the regulating pressure plate (23) facing away from the storage seat (10).

7. The lithium battery testing tool according to claim 6, characterized in that: The mounting portion comprises a first elongated hole (216), wherein M-1 first elongated holes (216) are arranged at equal intervals around the center of the adjusting pressure plate (23), The pressure adjusting member (30) is capable of moving in the first elongated hole (216), so that the distance between the pressure adjusting member (30) and the center of the adjusting pressure plate (23) is adjustable.

8. The lithium battery testing tool according to claim 6, characterized in that: The mounting portion comprises a receiving chamber (215), wherein M-1 receiving chambers (215) are arranged at equal intervals around the center of the adjusting pressing plate (23), The pressure plate assembly (20) further comprises M-1 insert bodies (22), each of the insert bodies (22) being provided with a second elongated hole (221), and each of the insert bodies (22) being inserted into one of the accommodating chambers (215).

9. The lithium battery testing tool according to claim 1, characterized in that: When M regulating plates (23) are provided, M of the adjustment plates (23) are arranged in an array, any one of the M adjustment plates (23) is projected orthographically on the storage seat (10), and the projection of any one of the M adjustment plates (23) is located on the working surface (101), The pressure adjusting members (30) correspond to the adjusting pressure plates (23) one by one, and the power output part of each pressure adjusting member (30) is connected to one adjusting pressure plate (23), so that the adjusting pressure plate (23) can be close to or away from the working surface (101).

10. A lithium battery testing device, comprising a sensor and the lithium battery testing tooling according to any one of claims 1 to 9, characterized in that: The sensor is connected to the battery arranged on the lithium battery detection tooling and is used for sensing the change of the expansion force of the battery.

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