Chain connecting structure and battery cold and hot pressing equipment

Abstract

The utility model discloses a chain connecting structure and battery cold and hot pressing equipment, the chain connecting structure comprises a mounting seat, the mounting seat is used for being fixed at the side part of a laminate, the mounting seat is provided with a positioning hole arranged along a first direction, the mounting seat is also provided with an assembly space for a chain to penetrate along a second direction, the positioning hole is communicated with the assembly space, and the second direction is perpendicular to the first direction; the positioning piece can penetrate through the positioning hole and can penetrate into the assembling space so as to be matched with a chain hole of the chain located in the assembling space; the stop piece is fixed on the mounting base, the stop piece has elasticity, and the stop piece is configured to be capable of generating elastic deformation to avoid the positioning piece in the process that the positioning piece is assembled to the positioning hole, and is partially located above the positioning piece to prevent the positioning piece from being separated from the positioning hole after the positioning piece is assembled to the positioning hole; and the chain is firmly fixed on the side part of the laminate, so that the chain is very convenient to mount and dismount, and the maintenance time and the labor cost are saved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of semiconductors, in particular to a chain connecting structure and a battery cold and hot pressing device. BACKGROUND

[0002] In the production process of soft package lithium batteries, the hot pressing and cold pressing processes are also very important. The cold and hot pressing of soft package battery cells needs to fix the battery cells between various layers through a cold and hot pressing clamp, so that the active material on the surface of the pole piece and the diaphragm are better adhered together, and the gas in the battery is also discharged to make the surface of the battery more flat. The cold and hot pressing clamp needs to pull apart the passages of various layers through a chain to realize the placement and removal of the soft package battery between the layers.

[0003] In the related art, the connection mode of the chain and the layer plate is that a hole pin passes through a small metal plate fixed on the layer plate and a chain hole of the chain, and the connection of the chain and the layer plate is realized by the mode that the small hole at the bottom of the hole pin passes through a split pin to prevent the hole pin from falling out. However, this connection mode has many parts, and the hole pin and the split pin are difficult to disassemble under the limitation of the equipment space. If the split pin is not installed, the hole pin is easy to shake out and fall off during the transportation of the equipment. UTILITY MODEL CONTENT

[0004] The application discloses a chain connecting structure and a battery cold and hot pressing device, which can firmly fix the chain on the side of the layer plate of the battery cold and hot pressing device, and makes the installation and disassembly of the chain very convenient, reduces the number of parts, reduces the maintenance cost of the equipment, and saves the maintenance time and labor cost.

[0005] In order to achieve the above purpose, the application discloses a chain connecting structure for fixing the chain on the side of the layer plate of the battery cold and hot pressing device, comprising:

[0006] A mounting seat is used for fixing on the side of the layer plate, the mounting seat has a positioning hole arranged in a first direction, and the mounting seat also has an assembly space for the chain to pass through in a second direction, the positioning hole is communicated with the assembly space, and the second direction is perpendicular to the first direction;

[0007] A positioning member can pass through the positioning hole and can be deeply inserted into the assembly space to cooperate with the chain hole of the chain located in the assembly space;

[0008] A stopper is fixed on the mounting base, the stopper has elasticity, and the stopper is configured to elastically deform to avoid the positioning piece during assembly of the positioning piece to the positioning hole and partially locate above the positioning piece after assembly of the positioning piece to the positioning hole to prevent the positioning piece from being separated from the positioning hole.

[0009] In a possible implementation, the positioning hole includes a first end and a second end along the first direction, the first end penetrates a first surface of the mounting base, and the stopper is arranged on the first surface. The stopper can at least block part of the positioning piece in a natural state.

[0010] In a possible implementation, the stopper includes a stopper part and a connecting part connected to each other, the connecting part is connected to the first surface, and at least part of the stopper part is located above the positioning piece.

[0011] In a possible implementation, the connecting part is arranged to be inclined relative to the vertical direction, and the stopper part extends along the horizontal direction.

[0012] In a possible implementation, the connecting part is in an arc-shaped sheet structure.

[0013] In a possible implementation, the mounting base includes a first assembly part and a second assembly part arranged at intervals along the first direction, the assembly space is formed between the first assembly part and the second assembly part, the positioning hole includes a first positioning hole arranged on the first assembly part and a second positioning hole arranged on the second assembly part, the first positioning hole and the second positioning hole are in communication with the assembly space, the positioning piece penetrates the first positioning hole, and one end of the positioning piece is arranged in the assembly space to be matched with a chain hole of a chain located in the assembly space.

[0014] In a possible implementation, the first positioning hole penetrates the first assembly part along the first direction, and the second positioning hole is a counterbore.

[0015] And / or the positioning piece includes a head part and a rod part, the head part has an outer circumference larger than a hole diameter of the first positioning hole, and the rod part is arranged to penetrate the positioning hole.

[0016] In a possible implementation, the mounting base is provided with a mounting hole along a third direction, the third direction is perpendicular to the layer plate side, and the mounting hole is used to assemble a fastener to fix the mounting base to the layer plate side.

[0017] In a possible implementation, the mounting base comprises a top wall and a first side wall away from the side of the layer plates, the positioning hole penetrates the top wall along the first direction, and the positioning hole penetrates the first side wall at a portion above the mounting hole.

[0018] In a possible implementation, the second assembly part has a second surface for supporting the chain, the head part has a first preset height L1, the rod part has a second preset height L2, the stop part has a third preset height d from the first surface, and the first surface has a fourth preset height D from the second surface. The d, D, L1, and L2 satisfy: L1 < d, L2 < d + D < L1 + L2.

[0019] In a possible implementation, the first direction is a vertical direction.

[0020] The application further discloses a battery cold and hot pressing device, comprising:

[0021] a mounting rack;

[0022] a plurality of layer plates, the plurality of layer plates are parallel and slidingly arranged on the mounting rack, and adjacent layer plates are used for clamping a battery, and the plurality of layer plates comprise a first layer plate at a first end;

[0023] a plurality of chain connecting structures, the plurality of chain connecting structures are arranged on the side of the plurality of layer plates one by one, and the chain connecting structure comprises the chain connecting structure in any one of the above.

[0024] a chain, the chain connects the plurality of layer plates through the plurality of chain connecting structures;

[0025] a driving mechanism, an output end of the driving mechanism is connected with the first layer plate, the driving mechanism can drive the first layer plate to reciprocate along the mounting rack, when the first layer plate moves towards other layer plates, adjacent layer plates clamp the battery, when the first layer plate moves away from other layer plates, the chain can pull other layer plates to move synchronously to release the battery.

[0026] Compared with the prior art, the application has the following beneficial effects:

[0027] In the chain connecting structure and the battery cold and hot pressing equipment provided in the application, the mounting seat is used to fix the chain on the side of the layer plate of the battery cold and hot pressing equipment, specifically, the positioning hole on the mounting seat is arranged along a first direction for the positioning member to be inserted, the assembly space is used for the chain to pass through along a second direction perpendicular to the first direction, so that the chain can be conveniently connected with the mounting seat, the positioning hole is communicated with the assembly space, and it is ensured that the positioning member can be smoothly matched with the chain hole of the chain to realize the fixation of the chain. The positioning member can pass through the positioning hole and enter the assembly space to be matched with the chain hole of the chain, so that the chain is fixed on the mounting seat. The stop member is elastic and fixed on the mounting seat, in the process that the positioning member is assembled to the positioning hole, the stop member can be elastically deformed to avoid the positioning member, so that the positioning member can be smoothly inserted, and after the positioning member is assembled to the positioning hole, the stop member is located above the positioning member, the positioning member is prevented from being separated from the positioning hole, the stability of the positioning member in the working process is ensured, the positioning member is prevented from falling off due to vibration or external force, and the chain can be fixed on the side of the layer plate of the battery cold and hot pressing equipment. Therefore, the installation and disassembly of the chain become very convenient, only need to pass the chain through the assembly space, and then insert the positioning member into the positioning hole to complete the installation, when the chain needs to be disassembled, only need to take out the positioning member, so that the chain can be separated from the mounting seat, the number of parts is reduced, the maintenance cost of the equipment is reduced, the convenient installation and disassembly mode also makes the maintenance and repair of the equipment more easy, and the maintenance time and labor cost are saved. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0029] Figure 1 The structure diagram of the mounting seat and the stop member of the chain connecting structure provided in the embodiments of the present application is shown in the figure.

[0030] Figure 2 The left view of the chain connecting structure, the chain and the layer plate after assembly is shown in the figure.

[0031] Figure 3 The front view of the chain connecting structure, the chain and the layer plate after assembly is shown in the figure.

[0032] Figure 4 The top view of the chain connecting structure, the chain and the layer plate after assembly is shown in the figure.

[0033] Figure 5A chain connecting structure and a chain and a fastener assembly structure schematic view provided by the embodiment of the utility model;

[0034] Figure 6 A chain connecting structure and a chain assembly structure schematic view provided by the embodiment of the utility model;

[0035] Figure 7 A positioning member of a chain connecting structure in the assembly process structure schematic view provided by the embodiment of the utility model.

[0036] Mark explanation:

[0037] 10 - mounting seat, 11 - positioning hole, 111 - first positioning hole, 112 - second positioning hole, 12 - assembly space, 13 - first surface, 14 - first assembly part, 15 - second assembly part, 16 - mounting hole, 17 - top wall, 18 - first side wall, 20 - positioning member, 21 - head, 22 - rod, 30 - stop, 31 - stop, 32 - connecting part, 40 - layer plate, 41 - layer plate side, 50 - chain, 60 - fastener. Specific implementation

[0038] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0039] In the present application, the terms "mounting", "setting", "provided with", "connecting", "connected" should be understood broadly. For example, it can be fixed connection, detachable connection, or integral structure; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate media, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] In addition, the terms "first", "second" and the like are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not intended to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise stated, the meaning of "multiple" is two or more.

[0041] In the production process of pouch lithium batteries, hot pressing and cold pressing processes are also crucial. The hot and cold pressing of the pouch cells requires a hot and cold pressing fixture to fix the cells between the various layers. The layers apply specific temperatures and pressures to the cells, allowing the active materials on the electrode surfaces to better adhere to the separator. Simultaneously, it also helps to expel internal gases, resulting in a smoother battery surface. The hot and cold pressing fixture uses a chain to open the channels between the layers, enabling the pouch batteries to be inserted and removed from the layers.

[0042] In related technologies, the chain is connected to the shelf by a perforated pin passing through a small sheet metal part fixed to the shelf and the chain hole of the chain. A cotter pin passes through a small hole at the bottom of the perforated pin to prevent it from coming loose. However, this connection method involves many parts, and the perforated pin and cotter pin are difficult to disassemble and assemble due to space constraints. If the cotter pin is not installed, vibration during equipment transportation can easily cause the perforated pin to come loose.

[0043] In view of this, some embodiments of this application provide a chain connection structure and a battery hot and cold pressing device, which can firmly fix the chain to the side of the shelf of the battery hot and cold pressing device, while making the installation and disassembly of the chain very convenient, reducing the number of parts, reducing the maintenance cost of the equipment, and saving maintenance time and labor costs.

[0044] The present application will be described in detail below through specific embodiments:

[0045] The chain connection structure in the embodiments of this application, such as Figures 1-5 As shown, a method for securing a chain to the side of a shelf in a battery hot and cold pressing device includes:

[0046] Mounting base 10 is used to fix the shelf side 41. Mounting base 10 has a positioning hole 11 arranged in a first direction. Mounting base 10 also has an assembly space 12 for the chain 50 to pass through in a second direction. The positioning hole 11 communicates with the assembly space 12. The second direction is perpendicular to the first direction.

[0047] Positioning element 20, which can pass through positioning hole 11 and extend into assembly space 12 to engage with chain hole of chain 50 located in assembly space 12;

[0048] The stop 30 is fixed on the mounting base 10. The stop 30 is elastic and is configured such that during the process of assembling the positioning member 20 into the positioning hole 11, the stop 30 can undergo elastic deformation to avoid the positioning member 20. After the positioning member 20 is assembled into the positioning hole 11, the stop 30 is partially located above the positioning member 20 to prevent the positioning member 20 from dislodging from the positioning hole 11.

[0049] The chain connecting structure provided by the embodiments of the present application is used for fixing the chain 50 to the layer plate side part 41 of the battery cold and hot pressing equipment. Specifically, the positioning hole 11 on the mounting seat 10 is arranged along a first direction, used for inserting the positioning member 20, the assembly space 12 is used for the chain 50 to pass through along a second direction perpendicular to the first direction, so that the chain 50 can be conveniently connected with the mounting seat 10, the positioning hole 11 is communicated with the assembly space 12, and it is ensured that the positioning member 20 can be smoothly matched with the chain hole of the chain 50 to realize the fixing of the chain 50. The positioning member 20 can pass through the positioning hole 11 and enter the assembly space 12 to be matched with the chain hole of the chain 50, so as to firmly fix the chain 50 on the mounting seat 10, and the reliability and stability of the connection are ensured. The stop member 30 is elastic and is fixed on the mounting seat 10. During the assembly of the positioning member 20 to the positioning hole 11, the stop member 30 can be elastically deformed to avoid the positioning member 20, so that the positioning member 20 can be smoothly inserted. Specifically, the elasticity of the stop member 30 is small, and the positioning member 20 is inserted into the positioning hole 11 in a slightly inclined posture. After the positioning member 20 is smoothly assembled to the positioning hole 11 by extruding the stop member 30 to generate elastic deformation, the stop member 30 is partially located above the positioning member 20 to prevent the positioning member 20 from being separated from the positioning hole 11, and the stability of the positioning member 20 during the working process is ensured. The positioning member 20 is prevented from falling off due to vibration or external force, so that the chain 50 can be firmly fixed to the layer plate side part 41 of the battery cold and hot pressing equipment. Therefore, the installation and disassembly of the chain 50 become very convenient. Only the chain 50 needs to pass through the assembly space 12, and then the positioning member 20 is inserted into the positioning hole 11 to complete the installation. When the chain 50 needs to be disassembled, the positioning member 20 is only taken out, and the chain 50 can be easily separated from the mounting seat 10, thereby reducing the maintenance cost of the equipment. The convenient installation and disassembly mode also makes the maintenance and repair of the equipment more easy, and the maintenance time and labor cost are saved.

[0050] The size and shape of the positioning member 20 need to be matched with the positioning hole 11 and the chain hole to ensure the reliability and stability of the connection. The outer peripheral size of the positioning member 20 that enters the positioning hole 11 and the chain hole part can be slightly smaller than the hole diameter of the positioning hole 11 and the chain hole, so as to facilitate the assembly of the positioning member 20. The first direction is the direction indicated by the arrow X in Figure 2 、 Figure 3 and Figure 5 . The second direction is the direction indicated by the arrow Y in Figure 3 and Figure 4 .

[0051] Specifically, in some embodiments, as shown in Figure 5As shown, the positioning hole 11 includes a first end and a second end along the first direction, the first end penetrates the first surface 13 of the mounting base 10, and the stopper 30 is arranged on the first surface 13, and the stopper 30 at least blocks part of the positioning member 20 in a natural state.

[0052] The first end of the positioning hole 11 penetrates the first surface 13 of the mounting base 10, the stopper 30 is arranged on the first surface 13 of the mounting base 10, and the stopper 30 at least blocks part of the positioning member 20 in a natural state, which can effectively prevent the positioning member 20 from accidentally falling out of the first end of the positioning hole 11, and thus the stopper 30 arranged on the first surface 13 of the mounting base 10 does not occupy too much space, so that the overall layout of the device is more compact and reasonable, and efficient connection of the chain 50 can be achieved in limited space, thereby improving the space utilization of the device.

[0053] Alternatively, in other embodiments, when the first surface 13 has limited space, the stopper 30 can also be arranged on the second surface adjacent to the first surface 13, and the stopper 30 has a blocking portion extending above the first surface 13 in a natural state, so that the blocking portion can at least block part of the positioning member 20.

[0054] In some possible embodiments, as shown in Figure 5 The stopper 30 includes a blocking portion 31 and a connecting portion 32 connected to each other, the connecting portion 32 is connected to the first surface 13, and at least part of the blocking portion 31 is located above the positioning member 20.

[0055] Since the blocking portion 31 of the stopper 30 needs to have a certain distance from the first surface 13, the blocking portion 31 and the connecting portion 32 are connected to each other, and the connecting portion 32 is connected to the first surface 13 of the mounting base 10, so that the structure of the stopper 30 is more reasonable and can be conveniently fixed on the mounting base 10, and at the same time, the structure of the mounting base 10 can also be designed to be more simple and compact, occupying less space. Since the positioning member 20 usually shakes along the vertical direction under the action of gravity, the blocking portion 31 is located above the positioning member 20, which can effectively prevent the positioning member 20 from accidentally falling out when shaking.

[0056] In one possible implementation in the embodiment, as shown in Figure 5 The first direction is the vertical direction. The positioning member 20 usually shakes along the vertical direction when shaking, and when the first direction is the vertical direction, the positioning member 20 can be more easily blocked by the blocking portion 31 located above, thereby preventing the positioning member 20 from falling out of the positioning hole 11.

[0057] In some embodiments, the connecting portion 32 is arranged to be inclined relative to the vertical direction, and the blocking portion 31 extends along the horizontal direction.

[0058] The connecting part 32 is arranged obliquely relative to the vertical direction, and the stop part 31 extends in the horizontal direction, so that when the positioning member 20 shakes in the vertical direction, the contact area between the stop part 31 and the positioning member 20 is the largest, thereby improving the stopping effect. Meanwhile, the oblique connecting part 32 can disperse the stress from the positioning member 20 to different directions, reduce stress concentration, and in the case of the same vertical space, the connecting part 32 has a longer size and is more likely to be elastically deformed, facilitating the assembly and removal of the positioning member 20.

[0059] Further, the connecting part 32 can have various implementation manners, for example, the connecting part 32 is an arc-shaped sheet structure. Alternatively, the connecting part 32 can also be a flat sheet structure, a spiral sheet structure, etc.

[0060] When the connecting part 32 is an arc-shaped sheet structure, it generally has better elasticity and deformability, and it is easier to adjust the position and angle of the stop part 30 when assembling the positioning member 20 to adapt to different installation requirements. The operator can more easily slightly bend or twist the connecting part 32 to achieve accurate matching of the stop part 30 and the positioning member 20, thereby improving the efficiency and accuracy of installation.

[0061] In the embodiment, as shown in Figure 1 The mounting seat 10 includes a first assembly part 14 and a second assembly part 15 arranged at intervals in a first direction, and a assembly space 12 is formed between the first assembly part 14 and the second assembly part 15. The positioning hole 11 includes a first positioning hole 111 arranged on the first assembly part 14 and a second positioning hole 112 arranged on the second assembly part 15, and the first positioning hole 111 and the second positioning hole 112 are both in communication with the assembly space 12. The positioning member 20 passes through the first positioning hole 111 and one end of the positioning member 20 is deep into the assembly space 12 to cooperate with the chain hole of the chain 50 located in the assembly space 12.

[0062] By arranging the first assembly part 14 and the second assembly part 15 at intervals on the mounting seat 10, and arranging the first positioning hole 111 and the second positioning hole 112 on the two assembly parts respectively, the positioning member 20 can be fixed at multiple points when cooperating with the chain hole of the chain 50, that is, the upper end and the lower end of the positioning member 20 are respectively fixed with the first positioning hole 111 and the second positioning hole 112. This greatly improves the connection stability between the chain 50 and the mounting seat 10, and reduces the possibility of shaking or loosening of the chain 50 during use. The arrangement of the two positioning holes 11 enables the positioning member 20 to uniformly distribute force on the chain 50 when cooperating with the chain hole, thereby avoiding local deformation or damage of the chain 50 due to excessive force on a single point, and prolonging the service life of the chain 50.

[0063] The fixing direction of the positioning hole 11 and the positioning member 20 can have various implementation manners. In one possible implementation manner, as shown in Figure 5The first positioning hole 111 penetrates the first assembly part 14 along a first direction, and the second positioning hole 112 is a counterbore.

[0064] The first positioning hole 111 penetrates the first assembly part 14 along a first direction, so that the positioning member 20 can be inserted from one side of the first assembly part 14. The second positioning hole 112 is a counterbore, which can position and support the positioning member 20 when the positioning member 20 passes through the chain hole of the chain 50 and is inserted into the second positioning hole 112, preventing the positioning member 20 from continuing to displace downward. Thus, the positioning member 20 can be a rod body with the same outer diameter. The counterbore also makes no obvious protruding part on the outside after the positioning member 20 is inserted, making the entire mounting seat 10 look smoother and more regular.

[0065] In another possible implementation, as shown in FIG. 4, the positioning member 20 includes a head part 21 and a rod part 22. The head part 21 has an outer dimension greater than the diameter of the first positioning hole 111, and the rod part 22 is arranged to pass through the positioning hole 11. Figure 5

[0066] The head part 21 has an outer dimension greater than the diameter of the first positioning hole 111. When the positioning member 20 is inserted into the positioning hole 11, the head part 21 is clamped on the outside of the first assembly part 14, serving as a limiting part, which effectively prevents the positioning member 20 from continuing to displace downward. Thus, the second positioning hole 112 can be a counterbore or can penetrate the second assembly part 15, both of which ensure that the connection between the chain 50 and the mounting seat 10 is firm and reliable. Meanwhile, the presence of the head part 21 increases the contact area between the positioning member 20 and the mounting seat 10, making the positioning member 20 more stable when subjected to external force. When installing and dismounting the positioning member 20, the operator can operate by grabbing the head part 21 of the positioning member 20, reducing the operation difficulty and time.

[0067] The mounting seat 10 is assembled to the side part 41 of the layer plate in various possible ways. For example, the mounting seat 10 is provided with a mounting hole 16 along a third direction perpendicular to the side part 41 of the layer plate, and the mounting hole 16 is used to assemble a fastener 60 to fix the mounting seat 10 to the side part 41 of the layer plate. Alternatively, the mounting seat 10 can be fixed to the side part 41 of the layer plate by welding, bonding, or through a buckle connection.

[0068] The third direction is the direction indicated by the arrow Z in FIG. 1. Figure 5

[0069] ​​The mounting seat 10 can be firmly fixed to the layer plate side 41 by setting mounting holes 16 along the third direction (perpendicular to the layer plate side 41) on the mounting seat 10 and assembling fasteners 60. The mounting holes 16 are designed to make the mounting process of the mounting seat 10 very simple, only need to align the mounting seat 10 with the mounting position of the layer plate side 41, and then fix it by fasteners 60 (such as bolts, nuts, etc.), and it is also very convenient to disassemble the mounting seat 10 when the equipment needs to be maintained or the chain 50 needs to be replaced.

[0070] Further, in some embodiments, as shown in Figure 1 The mounting seat 10 includes a top wall 17 and a first side wall 18 away from the layer plate side 41, the positioning hole 11 penetrates the top wall 17 along the first direction, and the positioning hole 11 penetrates the first side wall 18 at the portion above the mounting hole 16.

[0071] The positioning hole 11 penetrates the first side wall 18 at the portion above the mounting hole 16, so that the aperture of the positioning hole 11 at the portion above the mounting hole 16 is larger, as shown in Figure 7 When mounting the positioning member 20, the operator inserts the positioning member 20 into the positioning hole 11 in a slightly inclined posture, and after the head 21 abuts against the stop portion 31, the stop member 30 is elastically deformed to avoid the positioning member 20, and then the positioning member 20 smoothly enters the positioning hole 11 below the stop portion 31, and the same is true when disassembling, so this design is more convenient for the operator to insert the positioning member 20 into the positioning hole 11 from the outside of the mounting seat 10 in a slightly inclined posture, without the need to operate in a narrow space, which can improve the efficiency and accuracy of installation and reduce the difficulty in the installation process.

[0072] Or in other embodiments, the positioning hole 11 above and below the mounting hole 16 can also be set to have the same aperture size, or the aperture of the positioning hole 11 above is slightly larger than that of the positioning hole 11 below.

[0073] In some embodiments, as shown in Figure 6 The second assembly portion 15 has a second surface for supporting the chain 50, along the first direction, the head 21 has a first preset height L1, the rod portion 22 has a second preset height L2, the stop portion 31 to the first surface 13 has a third preset height d, and the first surface 13 to the second surface has a fourth preset height D, d, D, L1 and L2 satisfy: L1 < d, L2 < d + D < L1 + L2.

[0074] Thus, the first preset height L1 of the head 21 is less than the distance between the stop 31 and the first surface 13, so that the head 21 can be located between the stop 31 and the first surface 13 after assembly, while the distance between the stop 31 and the second surface is less than the height of the entire positioning member 20 (i.e. the sum of the heights of the head 21 and the stem 22) and greater than the height of the stem 22, so that the stem 22 can smoothly enter the second positioning hole 112 and the positioning member 20 can be more easily assembled into the positioning hole 11, the stop 30 has a fifth preset height h in the first direction, in a possible implementation, h+d+D is approximately equal to L1+L2, so that the positioning member 20 can be more easily assembled to or detached from the positioning hole 11, and the stop 30 can also ensure good stopping effect, and the operator can operate more easily.

[0075] The battery cold and hot pressing equipment also includes a plurality of layer plates 40, a plurality of chain connection structures, a chain 50 and a driving mechanism, the plurality of layer plates 40 are parallel and slidingly arranged on the mounting frame, and the adjacent layer plates 40 are used for clamping the battery, the plurality of layer plates 40 include a first layer plate 40 located at a first end, the plurality of chain connection structures are one-to-one arranged on the side portions of the plurality of layer plates 40, the chain 50 connects the plurality of layer plates 40 through the plurality of chain connection structures, and an output end of the driving mechanism is connected with the first layer plate 40; the driving mechanism can drive the first layer plate 40 to reciprocate along the mounting frame; when the first layer plate 40 moves towards the direction of the other layer plates 40, the adjacent layer plates 40 clamp the battery; when the first layer plate 40 moves away from the direction of the other layer plates 40, the chain 50 can pull the other layer plates 40 to move synchronously to release the battery.

[0076] The chain connection structure in the battery cold and hot pressing equipment is the chain connection structure described above, so that the battery cold and hot pressing equipment in the embodiment has substantially the same technical effects as the chain connection structure described above, and since the technical effects of the chain connection structure have been fully described, no further description is given here.

[0077] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A chain connection structure for fixing a chain (50) to the side (41) of a layer plate in a battery hot and cold pressing device, characterized in that, The application relates to a chain positioning device for a layer board (40) of a vehicle, comprising: a mounting base (10) for being fixed to the layer board side (41), the mounting base (10) having a positioning hole (11) arranged along a first direction, the mounting base (10) further having an assembly space (12) for the chain (50) to pass through along a second direction, the positioning hole (11) being in communication with the assembly space (12), the second direction being perpendicular to the first direction; a positioning member (20) capable of passing through the positioning hole (11) and capable of being deep into the assembly space (12) to cooperate with a chain hole of the chain (50) located in the assembly space (12); a stop member (30) fixed to the mounting base (10), the stop member (30) being elastic, the stop member (30) being configured to be elastically deformed to avoid the positioning member (20) during assembly of the positioning member (20) to the positioning hole (11), and the stop member (30) being partially located above the positioning member (20) after assembly of the positioning member (20) to the positioning hole (11) to prevent the positioning member (20) from being separated from the positioning hole (11).

2. The chain connecting structure according to claim 1, characterized by The positioning hole (11) comprises a first end and a second end along the first direction, the first end penetrating a first surface (13) of the mounting base (10), the stop member (30) being arranged on the first surface (13), the stop member (30) being capable of at least partially shielding the positioning member (20) in a natural state, the stop member (30) comprising a stop portion (31) and a connecting portion (32) connected to each other, the connecting portion (32) being connected to the first surface (13), and at least part of the stop portion (31) being located above the positioning member (20).

3. The chain connection structure according to claim 2, characterized by The connecting portion (32) is arranged to be inclined relative to the vertical direction, the stop portion (31) extending along the horizontal direction, and the connecting portion (32) is in the form of an arc-shaped sheet structure.

4. The chain connecting structure according to claim 2, characterized by The mounting base (10) comprises a first assembly portion (14) and a second assembly portion (15) arranged to be spaced apart along the first direction, the assembly space (12) being formed between the first assembly portion (14) and the second assembly portion (15), the positioning hole (11) comprising a first positioning hole (111) arranged on the first assembly portion (14) and a second positioning hole (112) arranged on the second assembly portion (15), the first positioning hole (111) and the second positioning hole (112) both being in communication with the assembly space (12), and the positioning member (20) passing through the first positioning hole (111) and having one end deep into the assembly space (12) to cooperate with the chain hole of the chain (50) located in the assembly space (12).

5. The chain connection structure according to claim 4, characterized by The positioning member (20) comprises a head portion (21) and a rod portion (22), the head portion (21) having an outer peripheral dimension greater than a hole diameter of the first positioning hole (111), and the rod portion (22) being arranged to pass through the positioning hole (11).

6. The chain connection structure according to claim 1, characterized by The mounting seat (10) is provided with a mounting hole (16) along a third direction perpendicular to the layer plate side (41), and the mounting hole (16) is used for assembling a fastener (60) to fix the mounting seat (10) to the layer plate side (41).

7. The chain connection structure according to claim 6, characterized by The mounting seat (10) includes a top wall (17) and a first side wall (18) away from the layer plate side (41), and the positioning hole (11) penetrates the top wall (17) along the first direction, and the positioning hole (11) penetrates the first side wall (18) at a portion above the mounting hole (16).

8. The chain connecting structure according to claim 5, wherein The second assembly part (15) has a second surface for supporting the chain (50), and along the first direction, the head part (21) has a first preset height L1, the rod part (22) has a second preset height L2, the stop part (31) has a third preset height d to the first surface (13), and the first surface (13) has a fourth preset height D to the second surface, and the d, D, L1 and L2 satisfy: L1 < d, L2 < d+D < L1+L2.

9. The chain connection structure according to any one of claims 1 to 8, characterized in that, The first direction is a vertical direction.

10. A battery cold and hot press apparatus, characterized by, Comprise: A mounting frame; A plurality of layer plates (40) are parallel and slidingly arranged on the mounting frame, and adjacent layer plates (40) are used for clamping a battery, and the plurality of layer plates (40) include a first layer plate at a first end; A plurality of chain connection structures are arranged on the side of the plurality of layer plates (40), and the chain connection structure is the chain connection structure as claimed in claims 1-9; A chain (50) connects the plurality of layer plates (40) through the plurality of chain connection structures; A driving mechanism, the output end of the driving mechanism is connected with the first layer plate, the driving mechanism can drive the first layer plate to reciprocate along the mounting frame, when the first layer plate moves towards other layer plates (40), adjacent layer plates (40) clamp the battery, when the first layer plate moves away from other layer plates (40), the chain (50) can pull other layer plates (40) to move synchronously to release the battery.

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