Cushion block and cell extrusion system

Abstract

The utility model relates to a cushion block and a battery cell extrusion system, and belongs to the technical field of battery production equipment. The cushion block comprises a first plate body, a second plate body and a supporting assembly. The first plate body and the second plate body are oppositely arranged; the supporting assembly comprises a first supporting piece, a second supporting piece and a first fixing structure, the first supporting piece is connected with the first plate body, the second supporting piece is connected with the second plate body, and the first supporting piece can slide relative to the second supporting piece so that the first plate body and the second plate body can be close to or away from each other; the first fixing structure is used for limiting relative sliding between the first supporting piece and the second supporting piece. With the adoption of the application, the thickness of the cushion block is adjustable, so that the cushion block can adapt to battery cell modules with different thicknesses in an extrusion test, and the arrangement cost of the cushion block is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of battery production equipment, and in particular to a gasket and battery cell extrusion system. Background Art

[0002] During battery production, multiple battery cells are stacked to form a cell module. This module is then subjected to an extrusion test using a cell extruder to ensure it meets safety standards.

[0003] During the extrusion test, the ram of the battery cell extruder moves toward the compression wall. The thickness of various battery cell modules varies widely. To accommodate these diverse cell modules, the maximum distance between the ram and the compression wall is set relatively long. To save equipment costs, the ram's maximum travel distance is also set relatively short. This means that for thinner cell modules, a spacer must be placed between the module and the compression wall to complete the extrusion test.

[0004] However, the thickness of the current pads is mostly fixed, which means that for battery cell modules of different thicknesses, multiple pads of different thicknesses need to be equipped to complete the extrusion test, and the cost of arranging the pads is relatively high. Utility Model Content

[0005] The present application provides a spacer block and a battery cell extrusion system, which can solve the technical problems existing in the related art. The technical solutions of the spacer block and battery cell extrusion system are as follows:

[0006] In a first aspect, the present application provides a cushion block, the cushion block comprising a first plate body, a second plate body and a support assembly;

[0007] The first plate body and the second plate body are arranged opposite to each other;

[0008] The support assembly includes a first support member, a second support member and a first fixing structure, the first support member is connected to the first plate body, the second support member is connected to the second plate body, the first support member can slide relative to the second support member to make the first plate body and the second plate body closer or farther away, and the first fixing structure is used to limit the relative sliding between the first support member and the second support member.

[0009] In a possible implementation, both the first support member and the second support member have a cylindrical structure, and the first support member is at least partially located inside the second support member.

[0010] In a possible implementation, the outer side wall of the first support member has a first stop protrusion, and the inner side wall of the second support member has a second stop protrusion;

[0011] The second support member can rotate relative to the first support member, so that the first stopping protrusion cooperates with the second stopping protrusion to prevent the first support member from being separated from the second support member.

[0012] In a possible implementation, the first support member and the second support member both have a cylindrical structure;

[0013] The first stop protrusion and the second stop protrusion are both fan-shaped protrusions, the radius of the outer peripheral surface of the first stop protrusion is R1, the radius of the inner peripheral surface of the second stop protrusion is R2, the radius of the inner side wall of the second support member is R3, and R2<R1≤R3.

[0014] In a possible implementation, the first stop protrusion is located at an end of the first support member close to the second plate body, and the second stop protrusion is located at an end of the second support member away from the second plate body.

[0015] In a possible implementation, the outer side wall of the first support member has a plurality of first stop protrusions, the inner side wall of the second support member has a plurality of second stop protrusions, and the first stop protrusion can pass through a gap between two adjacent second stop protrusions.

[0016] In a possible implementation, the plurality of first stop protrusions are evenly distributed about the axis of the first support member, and the plurality of second stop protrusions are evenly distributed about the axis of the second support member.

[0017] In a possible implementation, the support assembly further includes a second fixing structure and a third support member;

[0018] The third support member has a cylindrical structure, is connected to the second plate, is at least partially located within the first support member, and is capable of sliding relative to the first support member to move the first plate and the second plate closer or farther away;

[0019] The second fixing structure is used to limit the relative sliding between the third support member and the first support member.

[0020] In a possible implementation, the support assembly further includes a plurality of third support members and a plurality of second fixing structures;

[0021] The plurality of third support members each have a cylindrical structure and are sleeved in sequence, the third support member located in the innermost circle is connected to the second plate, and the third support member located in the outermost circle is at least partially located within the first support member. Adjacent third support members and the third support member located in the outermost circle and the first support member can slide relative to each other, so that the first plate and the second plate are moved closer to or farther away from each other;

[0022] The plurality of second fixing structures are respectively used to limit the relative sliding between two adjacent third support members and between the third support member located at the outermost circle and the first support member.

[0023] In one possible implementation, the first fixing structure is a pin, the first support member has a plurality of pin holes, the plurality of pin holes are spaced apart in the sliding direction, the second support member has a first positioning hole, the first positioning hole is adapted to the pin hole, and the pin passes through the first positioning hole and the pin hole.

[0024] In a possible implementation, the plurality of pin holes are distributed at equal intervals.

[0025] In one possible implementation, the outer wall of the first support member has a plurality of first scale marks, and the plurality of first scale marks correspond one-to-one to the plurality of pin holes. The first scale marks are used to indicate the distance between the first plate body and the second plate body when the first fixing structure is inserted into the corresponding pin hole.

[0026] In a second aspect, the present application provides a battery cell extrusion system, which includes the gasket and battery cell extruder in the first aspect and possible implementations thereof.

[0027] The technical solution provided by this application includes at least the following beneficial effects:

[0028] The present application provides a pad block, in which the first support member and the second support member can slide relative to each other, so that the distance between the first plate body and the second plate body can be adjusted, so that the pad block can be adapted to battery cell modules of different thicknesses during the extrusion test, and there is no need to equip multiple pad blocks of different thicknesses, thereby reducing the layout cost of the pad block.

[0029] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0031] Figure 1 is a schematic diagram of an extrusion test shown in an embodiment of the present application;

[0032] Figure 2 This is a structural diagram of a cushion block shown in an embodiment of the present application;

[0033] Figure 3 This is a structural diagram of a cushion block shown in an embodiment of the present application;

[0034] Figure 4 is a schematic cross-sectional view of a first support member and a second support member shown in an embodiment of the present application;

[0035] Figure 5 This is a structural diagram of a cushion block shown in an embodiment of the present application;

[0036] Figure 6 This is a structural diagram of a cushion block shown in an embodiment of the present application;

[0037] Figure 7 This is a structural diagram of a cushion block shown in an embodiment of the present application;

[0038] Figure 8 This is a structural diagram of a pad shown in an embodiment of the present application.

[0039] Legend:

[0040] 1. The first plate;

[0041] 2. The second plate;

[0042] 3. Support components;

[0043] 31. First support member; 32. Second support member; 33. First fixing structure; 34. Third support member; 35. Second fixing structure;

[0044] 311, pin hole; 312, first stop protrusion; 313, first scale mark;

[0045] 320, gap; 321, first positioning hole; 322, second stop protrusion;

[0046] 341, second scale mark;

[0047] 351. Pin; 352. Card sleeve. DETAILED DESCRIPTION

[0048] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0049] The terms used in the detailed description of this application are intended solely to illustrate the embodiments of this application and are not intended to limit this application. Unless otherwise defined, technical or scientific terms used herein should have the same ordinary meaning as those understood by persons of ordinary skill in the art to which this application belongs. The terms "first," "second," "third," and similar terms used in this patent specification and claims do not denote any order, quantity, or importance, but are merely used to distinguish between different components. Similarly, terms such as "a" or "an" do not denote a limitation of quantity, but rather denote the presence of at least one. Terms such as "include" or "comprising" and similar terms mean that the elements or objects listed before "include" or "comprising" include the elements or objects listed after "include" or "comprising," and their equivalents, and do not exclude other elements or objects. Terms such as "connected" or "connected" are not limited to physical or mechanical connections but may include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used solely to indicate relative positions. When the absolute position of the described objects changes, the relative positions may also change accordingly.

[0050] Nowadays, during the battery production process, a cell extruder is required to perform an extrusion test on the cell module to ensure that the cell module meets safety standards. Figure 1 As shown, the battery cell extruder includes a pressure head, a pressure wall and an operating table. The pressure head is located on the upper surface of the operating table and is slidably connected to the operating table. The pressure head and the pressure wall are arranged relative to each other. When performing the extrusion test, the pressure head of the battery cell extruder moves toward the pressure wall. Taking into account the cost factors and the actual size of the battery cell module, the maximum distance from the pressure head to the pressure wall is set longer, and the maximum moving stroke of the pressure head is set shorter. This means that for thinner battery cell modules, it is necessary to use pads between the battery cell module and the pressure wall to complete the extrusion test. However, the thickness of the pads is mostly fixed at present, which means that for battery cell modules of different thicknesses, multiple pads of different thicknesses need to be equipped to complete the extrusion test, and the arrangement cost of the pads is relatively high.

[0051] The embodiment of the present application provides a pad, such as Figure 2 As shown, the pad includes a first plate body 1 , a second plate body 2 and a support assembly 3 .

[0052] The first plate body 1 is arranged opposite to the second plate body 2. The support assembly 3 includes a first support member 31, a second support member 32, and a first fixing structure 33. The first support member 31 is connected to the first plate body 1, and the second support member 32 is connected to the second plate body 2. The first support member 31 can slide relative to the second support member 32 to move the first plate body 1 and the second plate body 2 closer or farther away. The first fixing structure 33 is used to limit the relative sliding between the first support member 31 and the second support member 32.

[0053] In this way, through the relative sliding between the first support member 31 and the second support member 32, the first plate body 1 and the second plate body 2 can be brought closer to or farther away from each other, so that the distance between the first plate body 1 and the second plate body 2 is adapted to battery cell modules of different thicknesses, and there is no need to equip multiple gaskets of different thicknesses, thereby reducing the cost of arranging the gaskets.

[0054] Furthermore, if Figure 2 As shown, the first plate 1 and the second plate 2 can be arranged opposite and in parallel. The support assembly 3 is located between the first plate 1 and the second plate 2, and its two ends are connected to the first plate 1 and the second plate 2 respectively.

[0055] Optionally, the support assembly 3 can be disposed outside the accommodation space formed between the first plate body 1 and the second plate body 2. Specifically, one end of the first support member 31 can be connected to the side wall of the first plate body 1, and one end of the second support member 32 can be connected to the side wall of the second plate body 2. The other end of the first support member 31 and the other end of the second support member 32 can slide relative to each other to move the first plate body 1 and the second plate body 2 closer to or farther away from each other.

[0056] In some possible embodiments, such as Figure 2 As shown, the spacer includes a plurality of support components 3 .

[0057] like Figure 2 As shown, the first plate body 1 and the second plate body 2 can be two rectangular plates of the same size. The pad includes four support components 3. The four support components 3 are all located between the first plate body 1 and the second plate body 2. The four support components 3 are installed corresponding to the four top corners of the first plate body 1 respectively. The first support member 31 in each support component 3 is connected to the first plate body 1, and the second support member 32 is connected to the second plate body 2.

[0058] In this way, by arranging a plurality of support assemblies 3 between the first plate body 1 and the second plate body 2 , the overall compressive strength of the cushion block can be improved.

[0059] The connection method between the first support member 31 and the first plate body 1 and the connection method between the second support member 32 and the second plate body 2 can be the same or different. For example, the first support member 31 and the first plate body 1, and the second support member 32 and the second plate body 2 can both be connected by the cooperation of bolts and threaded holes, or the first support member 31 and the first plate body 1, and the second support member 32 and the second plate body 2 can both be connected by a snap-fit connection, which is not limited in this embodiment of the present application.

[0060] In some possible embodiments, the first support member 31 and the second support member 32 are sleeved together.

[0061] like Figure 2As shown, both the first support member 31 and the second support member 32 have a cylindrical structure, and the first support member 31 is at least partially located inside the second support member 32 .

[0062] In one example, the first support member 31 and the second support member 32 can both be cylindrical structures, with the outer diameter of the first support member 31 being equal to the inner diameter of the second support member 32. A clearance fit can be employed between the first support member 31 and the second support member 32. Thus, compared to cylindrical structures with other cross-sectional shapes, the first support member 31 and the second support member 32 being both cylindrical structures are less difficult to manufacture and can reduce costs. The clearance fit between the first support member 31 and the second support member 32 can reduce the difficulty of assembling the first support member 31 and the second support member 32.

[0063] In one example, the outer wall of the first support member 31 close to one end of the second plate body 2 has a first annular protrusion, and the inner side of the opening of the second support member 32 away from the second plate body 2 also has a second annular protrusion. The first annular protrusion is adapted to the inner wall of the second support member 32, and the second annular protrusion is adapted to the outer wall of the first support member 31. The first annular protrusion and the second annular protrusion cooperate to prevent the first support member 31 from separating from the second support member 32.

[0064] In this way, during the entire process of the cushion block being put into use after being assembled, the first support member 31 can be prevented from being separated from the second support member 32, thereby improving the service life of the cushion block.

[0065] In implementation, the first support member 31 can extend from the opening of the second support member 32 without the second annular protrusion into the interior of the second support member 32, and the first support member 31 extends from the opening of the second support member 32 with the second annular protrusion. Then, the end of the second support member 32 away from the first support member 31 can be fixedly connected to the second plate body 2, and the end of the first support member 31 away from the second support member 32 can be fixedly connected to the first plate body 1 in turn to complete the assembly of the pad.

[0066] In another example, Figure 3 As shown, the outer wall of the first support member 31 has a first stop protrusion 312, and the inner wall of the second support member 32 has a second stop protrusion 322. The second support member 32 can rotate relative to the first support member 31, so that the first stop protrusion 312 and the second stop protrusion 322 cooperate to prevent the first support member 31 from separating from the second support member 32.

[0067] In practice, the end of the second support member 32 without the second stop protrusion 322 is fixedly connected to the second plate body 2. Then, the first support member 31 can be extended from the opening of the second support member 32 with the second stop protrusion 322 into the interior of the second support member 32, so that the first stop protrusion 312 is located on the side of the second stop protrusion 322 closer to the second plate body 2. Subsequently, the first support member 31 can be rotated so that the first stop protrusion 312 and the second stop protrusion 322 are opposite each other. The abutment between the first stop protrusion 312 and the second stop protrusion 322 prevents the first support member 31 from being separated from the second support member 32, thus completing the assembly of the spacer.

[0068] In this way, compared with the above-mentioned solution of preventing the first support member 31 from separating from the second support member 32 by the annular protrusion, in this example, after the gasket is assembled, the first support member 31 can be rotated so that the first stop protrusion 312 and the second stop protrusion 322 are not relative to each other, thereby quickly disassembling the first support member 31 and the second support member 32, which can simplify the disassembly steps of the first support member 31 and the second support member 32.

[0069] Alternatively, as Figure 3 As shown, the outer wall of the first support member 31 has a plurality of first stop protrusions 312 , and the inner wall of the second support member 32 has a plurality of second stop protrusions 322 . A first stop protrusion 312 can pass through a gap 320 between two adjacent second stop protrusions 322 .

[0070] Furthermore, the plurality of first stop protrusions 312 are evenly distributed about the axis of the first support member 31 , and the plurality of second stop protrusions 322 are evenly distributed about the axis of the second support member 32 .

[0071] Alternatively, see Figure 3 The first stop protrusion 312 is located at one end of the first support member 31 close to the second plate body 2 , and the second stop protrusion 322 is located at one end of the second support member 32 away from the second plate body 2 .

[0072] In this way, the abutment between the first stop protrusion 312 and the second stop protrusion 322 has the least effect on the relative sliding between the first support member 31 and the second support member 32 , thereby ensuring that the thickness of the pad can reach the maximum value.

[0073] Of course, the first support member 31 and the second support member 32 may not be provided with protrusions for limiting the separation of the first support member 31 and the second support member 32 , and this embodiment of the present application does not limit this.

[0074] In some possible embodiments, the first stopping protrusion 312 and the second stopping protrusion 322 are both fan-shaped protrusions.

[0075] like Figure 4As shown, the first support member 31 and the second support member 32 both have cylindrical structures. The first stop protrusion 312 and the second stop protrusion 322 are both fan-shaped protrusions.

[0076] The radius of the outer circumference of the first stopping protrusion 312 is R1, the radius of the inner circumference of the second stopping protrusion 322 is R2, the radius of the inner sidewall of the second supporting member 32 is R3, and R2<R1.

[0077] In this way, when the first stopping protrusion 312 and the second stopping protrusion 322 are positioned opposite to each other, it can be ensured that the first stopping protrusion 312 and the second stopping protrusion 322 are at least partially in contact with each other.

[0078] The length of the first stop protrusion 312 and the second stop protrusion 322 in the sliding direction can be set by technicians according to actual needs. The length of the first stop protrusion 312 and the second stop protrusion 322 in the sliding direction should not be set too long, and it is sufficient to be able to abut each other and not easily deformed.

[0079] In one example, the outer peripheral radius R1 of the first stopping protrusion 312 is smaller than the radius R3 of the inner wall of the second support member 32. In this way, the difficulty of the first support member 31 extending into the second support member 32 can be reduced.

[0080] In one example, the outer peripheral radius R1 of the first stop protrusion 312 is equal to the radius R3 of the inner wall of the second support member 32. In this way, the rotational stability between the first support member 31 and the second support member 32 can be improved.

[0081] In some possible embodiments, the support assembly 3 further includes a third support member 34 and a second fixing structure 35 .

[0082] like Figure 6 As shown, the third support member 34 has a cylindrical structure, the third support member 34 is connected to the second plate body 2, the third support member 34 is at least partially located in the first support member 31, and can slide relative to the first support member 31 to make the first plate body 1 and the second plate body 2 closer or farther away.

[0083] In this way, by setting the third support member 34 so that the third support member 34 is at least partially located inside the first support member 31, it can be achieved that the third support member 34 and the second support member 32 do not contact each other during the relative sliding process relative to the first support member 31.

[0084] In one example, the lengths of the third support member 34, the second support member 32, and the first support member 31 are equal. In this way, the minimum size of the lifting block can be smaller, and the adjustment range of the block size is expanded.

[0085] Using the technical solution provided in the embodiment of the present application, take the maximum distance between the first plate 1 and the second plate 2 as 600 mm as an example. When the support assembly 3 only includes the first support member 31 and the second support member 32, the minimum distance between the first plate 1 and the second plate 2 is 300 mm, that is, the adjustment range of the pad (ignoring the plate thickness) is within the interval of [300 mm, 600 mm]. When the support assembly 3 also includes the third support member 34, the minimum distance between the first plate 1 and the second plate 2 is 200 mm, that is, the adjustment range of the pad is within the interval of [200 mm, 600 mm]. The adjustment range of the pad size is larger, so that more battery modules of different sizes can be adapted in the extrusion test.

[0086] In an example, the support assembly 3 includes a third support member 34 .

[0087] like Figure 6 As shown, the support assembly 3 also includes a second fixing structure 35 and a third support member 34. The third support member 34 has a cylindrical structure and is connected to the second plate body 2. The third support member 34 is at least partially located within the first support member 31 and can slide relative to the first support member 31 to move the first plate body 1 and the second plate body 2 closer or farther away. The second fixing structure 35 is used to limit the relative sliding between the third support member 34 and the first support member 31.

[0088] It is understandable that in order to improve the sliding stability between the third support member 34 and the first support member 31 , the shapes and sizes of the third support member 34 and the first support member 31 may be adapted to each other.

[0089] In one example, the support assembly 3 includes a plurality of third support members 34 .

[0090] like Figure 7 As shown, for example, the support assembly 3 further includes two third support members 34. These two third support members 34 both have a cylindrical structure and are nested together. The third support member 34 located in the inner ring is connected to the second plate 2, and the third support member 34 located in the outer ring is at least partially located within the first support member 31. The two third support members 34, as well as the third support member 34 located in the outer ring and the first support member 31, can slide relative to each other to move the first plate 1 and the second plate 2 closer or further apart. The support assembly 3 also includes a plurality of second fixing structures 35, which are respectively used to limit relative sliding between two adjacent third support members 34 and between the third support member 34 located in the outermost ring and the first support 31.

[0091] It is understandable that the number of third support members 34 in the support assembly 3 may not be limited to two, for example, it may be 3 or 4, and technicians may set it according to actual needs, and the embodiments of the present application do not limit this.

[0092] In some possible embodiments, the first fixing structure 33 is a pin.

[0093] like Figure 2 As shown, the first fixing structure 33 is a pin. Accordingly, the first fixing structure 33 is a pin, the first support member 31 has a plurality of pin holes 311, and the plurality of pin holes 311 are spaced apart in the sliding direction. The second support member 32 has a first positioning hole 321, and the first positioning hole 321 is adapted to the pin hole 311. The pin passes through the first positioning hole 321 and the pin hole 311.

[0094] The first positioning hole 321 is adapted to the pin hole 311 , which means that the first positioning hole 321 and the pin hole 311 have the same shape and the same or similar size.

[0095] It can be understood that the first fixing structure 33 limits the relative sliding between the first support member 31 and the second support member 32 by passing through the first positioning hole 321 and the pin hole 311. Therefore, the shape and size of the cross section of the pin should be compatible with the shape and size of the above-mentioned first positioning hole 321.

[0096] In practice, during the extrusion test, technicians can determine the target thickness of the required pad based on the thickness of the battery cell module, and then control the relative sliding of the first support member 31 and the second support member 32 so that the first positioning hole 321 and the pin hole 311 corresponding to the target thickness are opposite, and then the pin is passed through the first positioning hole 321 and the pin hole 311 to complete the fixation of the pad thickness.

[0097] Optionally, the plurality of pin holes 311 may be equidistantly distributed in the sliding direction. In this way, the distance between two adjacent pin holes 311 is equal, and when adjusting the thickness of the pad, the technician can estimate the thickness of the pad by the number of pin holes 311 located outside the second support member 32, thereby improving convenience.

[0098] In the case where the support assembly 3 includes a third support member 34, the second fixing structure 35 is a pin, see Figure 6 The third support member 34 is connected to the second plate 2 and can slide relative to the first support member 31 in a direction toward or away from the second plate 2. The third support member 34 has a second positioning hole (not shown) that mates with the pin hole 311. The second fixing structure 35 passes through the second positioning hole and the pin hole 311 to limit the relative sliding between the first support member 31 and the third support member 34.

[0099] The specific structures of the second fixing structure 35 and the second positioning hole can refer to the above description of the first fixing structure 33 and the first positioning hole 321, which will not be repeated here.

[0100] Alternatively, as Figure 7 As shown, in the case where the support assembly 3 includes a plurality of third support members 34 , the plurality of second fixing structures 35 include at least one pin 351 and at least one clamping sleeve 352 .

[0101] See also Figure 7 The third support member 34 on the outer ring has a second positioning hole (not shown) that matches the pin hole 311. The pin 351 passes through the second positioning hole and the pin hole 311 to limit relative sliding between the third support member 34 on the outer ring and the first support member 31. A gap is defined between the third support member on the outer ring and the third support member on the inner ring. The ferrule 352 has an annular structure that fits over the third support member on the inner ring and fits within the gap. The ferrule 352 is designed to extend into the gap between the third support member on the outer ring and the third support member on the inner ring to prevent relative sliding between the two third support members.

[0102] By adopting the technical solution of the embodiment of the present application, considering that the outer diameter of the third support member located in the inner ring is small and drilling is difficult, a sleeve 352 is set in the gap to prevent the relative sliding between two adjacent third support members without drilling.

[0103] In one embodiment, if Figure 5 As shown, there are multiple first scale marks 313 on the outer wall of the first support member 31, and the multiple first scale marks 313 correspond one-to-one to the multiple pin holes 311. The first scale marks 313 are used to indicate the distance between the first plate body 1 and the second plate body 2 when the first fixing structure 33 is inserted into the corresponding pin hole 311.

[0104] In this way, when adjusting the thickness of the pad, the technician can determine the distance between the first plate body 1 and the second plate body 2 by observing the first scale mark 313 on the outer wall of the first support member 31, thereby improving convenience.

[0105] For example, the maximum distance between the first plate 1 and the second plate 2 in the spacer is 592 mm. In one example, when the support assembly 3 further includes a third support member 34, as shown in FIG. Figure 8As shown, there are multiple second scale marks 341 on the outer wall of the third support member 34, and the multiple second scale marks 341 correspond one-to-one to the multiple pin holes 311. The second scale marks 341 are used to indicate: when the second fixing structure (i.e., the pin 351) is inserted into the corresponding pin hole 311, the protruding length of the third support member 34 relative to the first support member 31.

[0106] In this way, when adjusting the thickness of the pad, the technician can observe the first scale mark 313 on the outer wall of the first support member 31 and the second scale mark 341 on the outer wall of the third support member 34, and determine the sum of the first scale mark 313 and the second scale mark 341 as the distance between the first plate body 1 and the second plate body 2, thereby improving convenience.

[0107] Exemplarily, the maximum extension length of the third support member 34 relative to the first support member 31 is 407.5 mm, that is, in this example, the maximum distance between the first plate body 1 and the second plate body 2 is 999.5 mm.

[0108] The technical solutions provided by the embodiments of the present application include at least the following beneficial effects:

[0109] The present application provides a pad block, in which the first support member 31 and the second support member 32 can slide relative to each other, so that the distance between the first plate body 1 and the second plate body 2 can be adjusted, so that the pad block can be adapted to battery cell modules of different thicknesses during the extrusion test, and there is no need to equip multiple pad blocks of different thicknesses, thereby reducing the layout cost of the pad block.

[0110] An embodiment of the present application provides a battery cell extrusion system, which includes the above-mentioned pad and battery cell extruder.

[0111] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A spacer, characterized in that: The pad comprises a first plate body (1), a second plate body (2) and a support assembly (3); The first plate body (1) and the second plate body (2) are arranged opposite to each other; The support assembly (3) comprises a first support member (31), a second support member (32) and a first fixing structure (33), wherein the first support member (31) is connected to the first plate body (1), and the second support member (32) is connected to the second plate body (2), and the first support member (31) can slide relative to the second support member (32) so as to move the first plate body (1) and the second plate body (2) closer to or farther away from each other, and the first fixing structure (33) is used to limit the relative sliding between the first support member (31) and the second support member (32).

2. The cushion block according to claim 1, characterized in that The first support member (31) and the second support member (32) both have a cylindrical structure, and the first support member (31) is at least partially located inside the second support member (32).

3. The cushion block according to claim 2, characterized in that: The outer side wall of the first support member (31) has a first stop protrusion (312), and the inner side wall of the second support member (32) has a second stop protrusion (322); The second support member (32) can rotate relative to the first support member (31), so that the first stop protrusion (312) and the second stop protrusion (322) cooperate to prevent the first support member (31) from separating from the second support member (32).

4. The cushion block according to claim 3, characterized in that: The first support member (31) and the second support member (32) both have a cylindrical structure; The first stop protrusion (312) and the second stop protrusion (322) are both fan-shaped protrusions, the radius of the outer peripheral surface of the first stop protrusion (312) is R1, the radius of the inner peripheral surface of the second stop protrusion (322) is R2, the radius of the inner side wall of the second support member (32) is R3, and R2<R1≤R3.

5. The cushion block according to claim 3, characterized in that: The first stop protrusion (312) is located at an end of the first support member (31) close to the second plate body (2), and the second stop protrusion (322) is located at an end of the second support member (32) away from the second plate body (2).

6. The cushion block according to claim 3, characterized in that: The outer side wall of the first support member (31) has a plurality of first stop protrusions (312), the inner side wall of the second support member (32) has a plurality of second stop protrusions (322), and the first stop protrusion (312) can pass through the gap (320) between two adjacent second stop protrusions (322).

7. The cushion block according to claim 6, characterized in that: The plurality of first stop protrusions (312) are evenly distributed about the axis of the first support member (31), and the plurality of second stop protrusions (322) are evenly distributed about the axis of the second support member (32).

8. The cushion block according to any one of claims 2 to 7, characterized in that: The support assembly (3) further includes a second fixing structure (35) and a third support member (34); The third support member (34) has a cylindrical structure, the third support member (34) is connected to the second plate body (2), the third support member (34) is at least partially located in the first support member (31), and can slide relative to the first support member (31) to make the first plate body (1) and the second plate body (2) approach or move away; The second fixing structure (35) is used to limit the relative sliding between the third support member (34) and the first support member (31).

9. The spacer according to any one of claims 2 to 7, characterized in that: The support assembly (3) further includes a plurality of third support members (34) and a plurality of second fixing structures (35); The plurality of third support members (34) all have a cylindrical structure and are sleeved in sequence, the third support member (34) located in the innermost circle is connected to the second plate body (2), the third support member (34) located in the outermost circle is at least partially located in the first support member (31), and two adjacent third support members (34) and the third support member (34) located in the outermost circle and the first support member (31) can slide relative to each other, so that the first plate body (1) and the second plate body (2) are moved closer to or farther away from each other; The plurality of second fixing structures (35) are respectively used to limit relative sliding between two adjacent third support members (34) and between the third support member (34) located at the outermost circle and the first support member (31).

10. The spacer according to claim 1, wherein: The first fixing structure (33) is a pin, the first support member (31) has a plurality of pin holes (311), and the plurality of pin holes (311) are spaced apart in the sliding direction. The second support member (32) has a first positioning hole (321), and the first positioning hole (321) is adapted to the pin hole (311), and the pin passes through the first positioning hole (321) and the pin hole (311).

11. The cushion block according to claim 10, characterized in that: The plurality of pin holes (311) are distributed at equal intervals.

12. The spacer according to claim 10, characterized in that The outer side wall of the first support member (31) is provided with a plurality of first scale marks (313), and the plurality of first scale marks (313) correspond one-to-one to the plurality of pin holes (311). The first scale marks (313) are used to indicate the distance between the first plate body (1) and the second plate body (2) when the first fixing structure (33) is inserted into the corresponding pin hole (311).

13. A battery cell extrusion system, characterized in that: The battery cell extrusion system comprises the pad block and the battery cell extruder according to any one of claims 1 to 12.

Images