Hot pressing fixture and hot pressing equipment

Abstract

The present application discloses a hot pressing fixture and hot pressing equipment, the hot pressing fixture includes a top plate, a bottom plate, a pressure plate, a plurality of guide shafts and at least two groups of hot pressing parts spaced apart and arranged between the bottom plate and the pressure plate, the plurality of guide shafts are arranged between the top plate and the bottom plate, the top plate is arranged parallel to the bottom plate, one end of the plurality of guide shafts is fixed vertically to the top plate, the other end of the plurality of guide shafts is fixed vertically to the bottom plate, the pressure plate is arranged parallel between the top plate and the bottom plate, and the pressure plate slides along the axial direction of the plurality of guide shafts; each group of the hot pressing parts includes a plurality of layer plates, the plurality of layer plates are arranged parallel to the axial direction of the guide shafts, and the two ends of each layer plate are slidably matched with one of the guide shafts. The space between adjacent hot pressing parts can facilitate the layout of the wiring harness, which not only facilitates the installation and debugging of the production personnel, but also makes the subsequent after-sales maintenance faster and more convenient.

Description

Technical Field

[0001] The present application relates to the technical field of new energy equipment, and in particular to a hot pressing fixture and hot pressing equipment. Background Art

[0002] With the rapid upgrading of 3C consumer electronic products, the market demand for soft-pack lithium batteries is growing, which in turn increases the market demand for lithium battery production equipment.

[0003] The hot pressing fixture for traditional soft-pack lithium batteries has only one set of hot pressing parts between each pair of top and bottom plates. This set of hot pressing parts includes multiple parallel layers with an approximately rectangular shape. Each layer is axially movable along multiple parallel guide shafts. In such a setup, hundreds of wire harnesses and accessories are concentrated in the narrow space between two adjacent layers. When internal components need to be replaced, they are often interfered with by the wire harnesses, hindering debugging work.

[0004] Therefore, how to improve the ease of use of hot pressing fixtures for soft-pack lithium batteries remains to be solved. Summary of the Invention

[0005] The embodiments of the present application provide a hot pressing fixture and hot pressing equipment that are easy to use and debug.

[0006] The present application discloses a hot pressing fixture, comprising a top plate, a bottom plate, a pressure plate, a plurality of guide shafts and at least two groups of hot pressing parts spaced apart between the bottom plate and the pressure plate, the plurality of guide shafts being arranged between the top plate and the bottom plate, the top plate being arranged parallel to the bottom plate, one end of the plurality of guide shafts being fixed vertically to the top plate, the other end of the plurality of guide shafts being fixed vertically to the bottom plate, the pressure plate being arranged parallel between the top plate and the bottom plate, and the pressure plate being slidably fitted along the axial direction of the plurality of guide shafts; each group of the hot pressing parts comprises a plurality of layer plates, the plurality of layer plates being arranged parallel to the axial direction of the guide shaft, and the two ends of each of the layer plates being slidably fitted with one of the guide shafts respectively.

[0007] Optionally, each of the hot pressing fixtures includes two groups of hot pressing parts.

[0008] Optionally, the hot pressing fixture also includes a wire gathering piece and a positioning piece, and the positioning piece and the wire gathering piece are respectively arranged on the layer plate; a plane is determined by the axes of the two guide shafts that cooperate with the layer plate, and the center of gravity of the positioning piece and the center of gravity of the wire gathering piece are respectively located on both sides of the plane, the lithium battery to be processed is placed on the positioning piece, and the related wiring harnesses are concentrated on the wire gathering piece.

[0009] Optionally, the distance between two adjacent groups of the hot pressing parts is 14% to 36% of the width of the layer board.

[0010] Optionally, the plane determined by the axes of the two guide shafts cooperating with the layer plate is used as the support surface, and the specific gravity of the layer plate close to the first direction of the hot pressing fixture is greater than the specific gravity of the layer plate close to the second direction of the hot pressing fixture; the wire gathering piece is arranged close to the first direction of the hot pressing fixture and close to the edge of the corresponding layer plate, and the positioning piece is arranged close to the second direction of the hot pressing fixture.

[0011] Optionally, the width of the layer plate is 140 mm, and the distance between two adjacent groups of the hot pressing parts is 20 mm to 50 mm.

[0012] Optionally, the positioning member is a U-shaped folding member made of corrosion-resistant material, the U-shaped opening is facing the second direction of the hot pressing fixture, and the two side walls of the U-shaped positioning member are respectively fitted on the adjacent surfaces of two adjacent layer plates. The connection between the bottom of the positioning member and the side wall adopts a folding transition, and the bottom of the positioning member is preset with a crease. When the two adjacent layer plates are pressed close together, the bottom of the positioning member folds along the preset crease.

[0013] Optionally, two wire gathering members are provided on each layer plate, and the two wire gathering members are respectively provided at both ends of the layer plate in the length direction.

[0014] Optionally, the positioning member is provided with a product placement area for processing. When the product to be processed is placed in the placement area, it is supported by the two guide shafts that cooperate with the layer plate. The corresponding support point connection line determines the support axis, and the forces on both sides supported by the support axis are balanced.

[0015] Optionally, the preset fold is one line and divides the bottom of the positioning member into two halves, and the bottom of the positioning member protrudes toward the first direction of the hot pressing fixture with the preset fold as a convex ridge.

[0016] Optionally, the free ends of the two side walls of the positioning member are folded outward at right angles to the corresponding side wall surfaces, and the two folded free ends are fixed to the corresponding layer plates respectively.

[0017] Optionally, the distance between the center of gravity of the lithium battery to be processed and the edge of the layer plate close to the opening side of the positioning member is 15% to 35% of the width of the layer plate.

[0018] The present application also discloses a hot pressing device, comprising a control device and any of the hot pressing fixtures described above, wherein a driving end of the control device is fixed to a pressing plate of the hot pressing fixture to control the movement of the pressing plate.

[0019] Because the method is equivalent to dividing a group of hot pressing parts into two groups along the pressing direction, and optimizing and reducing the width of the layer structure of each group, so that there is a certain distance between the two groups of hot pressing parts, and then each group of layers corresponds to the two guide shafts for sliding cooperation, it overcomes the technical problem that there is only one group of hot pressing parts between each pressing plate and the base plate in the hot pressing fixture of the prior art, each rectangular layer can slide with four guide shafts, and hundreds of wiring harnesses and accessories are concentrated in the narrow space between two adjacent layers, resulting in the technical problem that the wiring harness often interferes with the debugging work when replacing internal components, thereby saving materials for layer manufacturing, and the space between adjacent hot pressing parts can facilitate the layout of the wiring harness, and the replacement of components such as heating tubes will not be blocked by the interference of the wiring harness. The huge space facilitates the entry of power tools, and the replacement of accessories is therefore faster and easier, which not only facilitates the installation and commissioning of production personnel, but also makes subsequent after-sales maintenance faster and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive work. In the drawings:

[0021] Figure 1 This is a schematic structural diagram of a hot pressing device for a lithium battery disclosed in an embodiment of the present application;

[0022] Figure 2 This is a schematic diagram of a simple planar structure of an existing hot pressing fixture;

[0023] Figure 3 is a schematic diagram of a hot pressing fixture disclosed in an embodiment of the present application;

[0024] Figure 4 It is a schematic diagram of the distance between two sets of hot pressing parts and a simplified plan view of the layer board disclosed in the embodiment of the present application;

[0025] Figure 5 This is a schematic diagram of the layer plate balancing principle disclosed in the embodiment of this application;

[0026] Figure 6 It is a schematic diagram of the principle of the calculation balance system disclosed in the embodiment of the present application;

[0027] Figure 7 It is a schematic diagram of the layout of the layer board and the corresponding components installed on the layer board disclosed in the embodiment of the present application;

[0028] Figure 8 is a schematic diagram of a positioning member disclosed in an embodiment of the present application;

[0029] Figure 9 is a schematic diagram of a lateral cross-section of a positioning member disclosed in an embodiment of the present application;

[0030] Figure 10 This is a schematic diagram of the unfolded positioning member disclosed in the embodiment of the present application.

[0031] Among them, 100, hot pressing equipment; 101, control device; 102, hot pressing fixture; 103, top plate; 104, bottom plate; 105, pressing plate; 106, guide shaft; 107, hot pressing part; 108, layer plate; 109, wire collection part; 110, positioning part; 111, lithium battery; 112, fold; 113, conductive plate; 114, pressing block; 115, ridge; 116, guide sleeve; 117, belt; 118, support surface; 119, support shaft; 120, center axis. DETAILED DESCRIPTION

[0032] It should be understood that the terms used herein, the specific structures and functional details disclosed are only for describing specific embodiments and are representative. However, the present application can be implemented in many alternative forms and should not be construed as being limited to the embodiments described herein.

[0033] In the description of this application, the term "plurality" means two or more. The term "comprising" and any variation thereof are intended to be non-exclusive, and one or more other features, integers, steps, operations, units, components and / or combinations thereof may exist or be added.

[0034] In addition, terms indicating orientation or positional relationships such as “center,” “up,” “down,” “vertical,” “horizontal,” “top,” “bottom,” “inside,” and “outside” are described based on the orientation or relative positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present application, and do not indicate that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present application.

[0035] Furthermore, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0036] The present application is described in detail below with reference to the accompanying drawings and optional embodiments.

[0037] In the following embodiments of the present application, the hot pressing fixture 102 is used as a reference. Figure 1 As shown, the first direction is X, the second direction is Y, and the third direction is Z.

[0038] like Figures 2 to 10 As shown, an embodiment of the present application discloses a hot pressing fixture 102, which includes a top plate 103, a bottom plate 104, a pressure plate 105, a plurality of guide shafts 106 and at least two groups of hot pressing parts 107 spaced apart between the bottom plate 104 and the pressure plate 105, the plurality of guide shafts 106 are arranged between the top plate 103 and the bottom plate 104, the top plate 103 is arranged parallel to the bottom plate 104, one end of the plurality of guide shafts 106 is vertically fixed to the top plate 103, the other end of the plurality of guide shafts 106 is vertically fixed to the bottom plate 104, the pressure plate 105 is arranged parallel between the top plate 103 and the bottom plate 104, and the pressure plate 105 slides along the axial direction of the plurality of guide shafts 106.

[0039] like Figure 1 、 Figures 3 to 10 As shown, each group of the hot pressing parts 107 includes a plurality of layers 108, and the plurality of layers 108 are arranged parallel to and perpendicular to the third direction of the hot pressing fixture 102, and the two ends of each layer 108 are slidably matched with one of the guide shafts 106. In the hot pressing fixture 102 of the prior art, there is only one group of hot pressing parts 107 between each pressing plate 105 and the base plate 104, and each rectangular layer 108 is slidably matched with four guide shafts 106. Hundreds of wiring harnesses and accessories are concentrated in the narrow space between two adjacent layers 108. Compared with the prior art, the embodiment of the present application adopts the technical means of dividing a group of hot pressing parts 107 into two groups along the pressing direction, optimizing and reducing the structural width of the layers 108 of each group, so that there is a certain distance between the two groups of hot pressing parts 107, and then each group of layers 108 is correspondingly slidably matched with two guide shafts 106. Therefore, the technical means overcomes the problem that each pressing plate 105 in the hot pressing fixture 102 of the prior art is slidably matched with the base plate 104. There is only one set of hot pressing parts 107 between the plates 104. Each rectangular layer 108 is slidably matched with four guide shafts 106. Hundreds of wire harnesses and accessories are concentrated in the narrow space between two adjacent layers 108, resulting in technical problems such as frequent interference by the wire harnesses when replacing internal components, which hinders the debugging work, thereby saving materials for the manufacture of the layers 108. Moreover, in the actual operation of the hot pressing fixture 102, the space between adjacent hot pressing parts 107 can facilitate the layout of the wire harnesses. At the same time, when components such as heating tubes need to be replaced, they will not be blocked by wire harness interference. The huge space facilitates the entry of power tools, and the replacement of accessories is therefore faster and easier, which not only facilitates installation and debugging, but also makes subsequent after-sales maintenance faster and more convenient.

[0040] like Figure 4As shown, the frame and frame dimensions of the hot pressing fixture 102 provided in the embodiment of the present application remain unchanged compared to the existing design. However, the spacing between two adjacent groups of hot pressing sections 107 in the embodiment of the present application is 14% to 36% of the width of the layer 108. Optionally, the specific size range of this spacing d1 can be 20mm to 50mm. This spacing range facilitates installation and commissioning without affecting the normal hot pressing process. Specifically, the width d2 of each layer 108 in the embodiment of the present application is 140mm, and the spacing d1 between two adjacent groups of hot pressing sections 107 is 42mm.

[0041] It should be understood that the existing layer plate 108 has four corners that cooperate with the guide shafts 106. This cooperation can ensure that the layer plate 108 always maintains the flatness of its plate surface during the compressive movement and does not become unbalanced. After the layer plate 108 is divided into two, each layer plate 108 only cooperates with two guide shafts 106. In order to avoid the unbalance of the plate surface flatness of the improved layer plate 108, the embodiment of the present application can accurately calculate the corresponding component settings, and the specific settings are as follows:

[0042] like Figure 5 and Figure 7 As shown, the hot pressing fixture 102 includes a wire collecting member 109 and a positioning member 110. The positioning member 110 and the wire collecting member 109 are respectively arranged on the layer 108. The axes of the two guide shafts 106 that match the layer 108 determine a support surface. The center of gravity of the positioning member 110 and the center of gravity of the wire collecting member 109 are respectively located on both sides of the support surface 118 shown. The product to be processed, i.e., the lithium battery 111, is placed on the positioning member 110. The relevant wiring harnesses are concentrated on the wire collecting member 109. The two guide shafts 106 that match the layer 108 are used as support. The corresponding support points are connected to determine a support shaft 119. The forces on both sides supported by the support shaft 119 are balanced. The relevant wiring harnesses are not shown in the figure. In the actual setting, the wiring harnesses exert a downward pulling force on the layer. This is a conventional design and will not be described in detail.

[0043] Among them, Figures 8 to 10As shown, the plane determined by the axes of the two guide shafts 106 cooperating with the layer 108 is the support surface 118, and the specific gravity of the layer 108 close to the first direction of the hot pressing fixture 102 is greater than the specific gravity of the layer 108 close to the second direction of the hot pressing fixture 102; the wire gathering piece 109 is arranged close to the first direction of the hot pressing fixture 102 and close to the corresponding edge of the layer 108, and the positioning piece 110 is arranged close to the second direction of the hot pressing fixture 102. The positioning member 110 is a U-shaped folding member made of corrosion-resistant material, and the U-shaped opening faces the second direction of the hot pressing fixture 102. The two side walls of the U-shaped positioning member 110 are respectively fitted on the adjacent surfaces of the two adjacent layer plates 108. The connection between the bottom of the positioning member 110 and the side wall adopts a folding transition, and the bottom of the positioning member 110 is preset with a crease 112. When the two adjacent layer plates 108 are pressed close to each other, the bottom of the positioning member 110 is folded along the preset crease 112.

[0044] like Figure 5 and Figure 6 As shown, Figure 5 FIG. 1 shows a schematic diagram of the position distribution of the support shaft 119, the support surface 118, and the central axis 120 of the layer. The calculation basis of the balance is as follows:

[0045] The total weight of the object on one side of the support shaft 119 is recorded as Ga, and the distance from the center of gravity of this side to the support shaft 119 is recorded as La; the total weight of the object on the other side of the support shaft 119 is recorded as Gb, and the distance from the center of gravity of this side to the support shaft 119 is recorded as Lb, then Ga*La=Gb*Lb. It should be noted that La, Lb, Ga, and Gb in the figure do not represent strict mechanical proportions, but are only used as theoretical references. The force analysis based on this principle is as follows Figure 6As shown, a conductive plate 113 and a pressing block 114 are provided on the side of the layer 108 where the lithium battery 111 to be processed is placed. This is an existing setting and will not be elaborated on. F1 represents the total weight of the accessories and the pressing block 114. The right side in the figure is the side where the lithium battery 111 is placed. It needs to be as close to the edge of the layer 108 as possible for easy placement and removal. The weight of the lithium battery 111 is marked as F2 here. At the same time, for the purpose of balance, the layer 108 is not symmetrical about the support shaft 119. The gravity of the layer 108 caused by the offset of the center of gravity of the layer 108 is recorded as F3. Because the wiring harness has a certain vertical downward pulling force after being placed on the wire hub 109, it is recorded as F4. In order to facilitate the control of the position of the lithium battery 111 and simplify the calculation, the embodiment of the present application offsets F3 and F1 through calculation, so it is necessary to adjust the position of the origin 0 of the support shaft 119. Here, F3*L1=F1*L2, where L1+L2 is equal to the width of a layer 108, L1 is the distance from the edge of the layer 108 close to the wiring harness end to the origin 0, and L2 is the distance from the edge of the layer 108 on the side opposite to the wiring harness end to the origin 0. L1+L2 is obtained through actual measurement, and the values of L1 and L2 are obtained through calculation. The simplified balance system formula is F1*L1=F2*L3, where L3 is the distance between the lithium battery 111 and the origin 0. When the lithium battery 111 placed on the layer 108 is replaced, it is only necessary to consider the relationship between the gravity of the lithium battery 111 and the wiring harness. Calculations show that the distance between the center of gravity of the lithium battery 111 to be processed and the edge of the layer 108 close to the opening side of the positioning member 110 is 15% to 35% of the width of the layer 108. This data is obtained based on experiments and actual measurements. In this way, it can be understood that at what position the lithium battery 111 is placed, the surface balance of the entire corresponding layer 108 can be achieved, thereby facilitating the smooth progress of the hot pressing process.

[0046] Among them, the positioning member 110 in the embodiment of the present application can be specifically made of highland barley paper. Highland barley paper is light and has good corrosion resistance and insulation properties, so it is effective when used as a spacer between the lithium battery 111 and the layer 108. The positioning member 110 in this embodiment is designed to be U-shaped, which can isolate the lithium battery 111 from the layer 108 in the upper and lower directions, and the connection between the bottom and the side wall of the positioning member 110 adopts a folding transition, and the bottom of the positioning member 110 is preset with a crease 112. When the two adjacent layers 108 are pressed close to each other, the bottom of the positioning member 110 is folded along the preset crease 112. This design prevents the uncontrollable folding of the positioning member 110 during the hot pressing process from affecting normal operation. To this end, the bottom preset crease 112 of the positioning member 110 disclosed in the embodiment of the present application is one and divides the bottom of the positioning member 110 in half. The bottom of the positioning member 110 protrudes toward the first direction of the hot pressing fixture 102 with the preset crease 112 as a ridge 115. In this way, during the compression and release process of the positioning member 110, its bottom will only fold along the determined crease 112. The design of protruding toward the first direction of the hot pressing fixture 102 is because the free space outside the positioning member 110 is large, which will not affect the normal operation of various components during the hot pressing process. If it protrudes and extends and folds in the second direction of the hot pressing fixture 102, it is very likely to touch the lithium battery 111 and affect the hot pressing process.

[0047] Because the positioning member 110 needs to be kept firmly installed throughout the entire hot pressing process, the free ends of the two side walls of the positioning member 110 in this embodiment are folded outward at right angles to the corresponding side wall surfaces, and the two folded free ends are fixed to the corresponding outer end surfaces of the layer plate 108, which can be fixed by screws. Of course, it can also be fixed by other means, and no specific restrictions are made here.

[0048] Specifically, the positioning member 110 also has an important function, which is to help place the lithium battery 111 so that the lithium battery 111 is placed in the equilibrium position calculated above. The specific positioning member 110 is designed as follows: the positioning member 110 is provided with a placement area for the lithium battery 111 to be processed. When the lithium battery 111 to be processed is placed in the placement area, it is supported by the two guide shafts 106 that cooperate with the layer 108. The corresponding support connection line determines the support shaft 119, and the forces on both sides supported by the support shaft 119 are balanced. The placement area can be a logo or a positioning structure design, so that it can be seen at a glance when placing the lithium battery 111, without having to adjust to the balance of the layer 108, which is convenient and more efficient. Among them, the position of the placement area of the lithium battery 111 to be processed is obtained by combining the above-mentioned calculation and actual balancing operation, so the fixed position of the placement area of the lithium battery 111 is not limited. In the embodiment of the present application, when the lithium battery 111 is actually placed, the battery is kept at a safety distance of 15 mm from the edge of the corresponding layer 108. The body width of the lithium battery 111 is 50 mm, so the center of gravity of the lithium battery 111 is 50 / 2+15=40 mm away from the edge of the corresponding layer 108. The specific results vary depending on the different width dimensions of the layer 108, which will not be elaborated. According to the variable dimensions used in this embodiment, the center of gravity of the lithium battery 111 should be 15% to 35% of the width of the layer 108.

[0049] Furthermore, two wire gathering members 109 are provided on each of the layer plates 108, and the two wire gathering members 109 are respectively provided at both ends of the length direction of the layer plates 108. Because in the hot pressing process, a conductive plate 113 is provided next to each lithium battery 111 placement position, and the conductive plate 113 is connected to a plurality of conductive wires, so the wire gathering member 109 is provided on the opposite side of the support shaft 119 corresponding to the placement position of the lithium battery 111. In the embodiment of the present application, each layer plate 108 completes the hot pressing process of two lithium batteries 111 at a time, so each layer plate 108 is provided with two wire gathering members 109, which not only facilitates the collection of the wire harness, but also the two wire gathering members 109 are respectively provided at both ends of the length direction of the layer plate 108, that is, the wire harness is close to the outside of the layer plate 108, which is convenient for debugging, and facilitates the calculation of the torque data when calculating the balance system, wherein the weight of the wire gathering member 109 itself and the weight of the aforementioned positioning member 110 itself have negligible effects on the balance system.

[0050] More specifically, the hot pressing fixture 102 may further include a guide sleeve 116 and a belt 117, wherein the guide sleeve 116 is fixed to both ends of the layer 108, and each corresponding guide shaft 106 can slide through the guide sleeve 116, that is, the layer 108 is slidably connected to the guide shaft 106 through the guide sleeve 116. Of course, a solution of opening a through hole on the layer 108 to cooperate with the guide shaft 106 can also be adopted here, as long as the corresponding functions can be met; wherein, in each group of the hot pressing parts 107, the one located at the bottom The layer plate 108 is fixed to the bottom plate 104, and the layer plate 108 at the top is fixed to the pressing plate 105. Therefore, the upper surface of the layer plate 108 at the top does not have the function of hot pressing the lithium battery 111. In the actual assembly design, except for the bottom layer plate 108, guide sleeves 116 are fixed on both ends of the length direction of the other layer plates 108 by screws, and then the belt 117 is used to fix the pressing plate 105 and the multiple guide sleeves 116 on the corresponding end side in turn by screws. In this way, after the hot pressing is completed, it is convenient to lift the multiple layer plates 108.

[0051] like Figure 1 As shown, an embodiment of the present application also discloses a hot pressing device 100, including a control device 101 and the above-mentioned hot pressing fixture 102, wherein the driving end of the control device 101 is fixed to the pressing plate 105 of the hot pressing fixture 102 to drive the pressing plate 105 to move, wherein the control device 101 can be electric or pneumatic, without limitation.

[0052] The above content is a further detailed description of the present application in conjunction with specific optional implementation methods, and the specific implementation of the present application cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, they can make several simple deductions or substitutions without departing from the concept of the present application, which should be considered to fall within the scope of protection of the present application.

Claims

1. A hot pressing fixture, characterized in that: The hot pressing fixture includes a top plate, a bottom plate, a pressure plate, and a plurality of guide shafts, wherein the plurality of guide shafts are arranged between the top plate and the bottom plate, the top plate is arranged parallel to the bottom plate, one end of the plurality of guide shafts is vertically fixed to the top plate, and the other end of the plurality of guide shafts is vertically fixed to the bottom plate, the pressure plate is arranged parallel to the top plate and the bottom plate, and the pressure plate is slidably matched along the axial direction of the plurality of guide shafts, and the hot pressing fixture also includes: At least two groups of hot pressing parts are spaced apart and arranged between the bottom plate and the pressing plate, each group of the hot pressing parts includes a plurality of layer plates, the plurality of layer plates are arranged perpendicular to the axial direction of the guide shaft and parallel to each other, and both ends of each layer plate are respectively slidably engaged with one of the guide shafts; The hot pressing part further includes a wire collecting member and a positioning member, wherein the positioning member and the wire collecting member are respectively arranged on the layer plate; A plane is determined by the axes of the two guide shafts that cooperate with the layer plate, and the center of gravity of the positioning part and the center of gravity of the line collection part are respectively located on both sides of the plane. The lithium battery to be processed is placed on the positioning part, and the relevant wiring harnesses are concentrated on the line collection part.

2. The hot pressing fixture according to claim 1, wherein Each of the hot pressing fixtures includes two groups of hot pressing parts.

3. The hot pressing fixture according to claim 1, wherein The distance between two adjacent groups of the hot pressing parts is 14% to 36% of the width of the layer board.

4. The hot pressing fixture according to claim 1, wherein A plane defined by the axes of the two guide shafts cooperating with the layer plate is used as a support surface, and the specific gravity of the layer plate in a first direction close to the hot pressing fixture is greater than the specific gravity of the layer plate in a second direction close to the hot pressing fixture; The line collecting member is disposed close to the first direction of the hot pressing fixture and close to the edge of the corresponding layer board, and the positioning member is disposed close to the second direction of the hot pressing fixture.

5. The hot pressing fixture according to claim 1, wherein: The distance between two adjacent groups of hot pressing parts is 20mm~50mm.

6. The hot pressing fixture according to claim 4, wherein: The positioning member is a U-shaped folding member made of corrosion-resistant material, and the U-shaped opening faces the second direction of the hot pressing fixture. The two side walls of the U-shaped positioning member are respectively fitted on the adjacent surfaces of the two adjacent layer plates. The connection between the bottom of the positioning member and the side wall adopts a folding transition, and the bottom of the positioning member is provided with a preset crease. When the two adjacent layer plates are pressed close together, the bottom of the positioning member folds along the preset crease.

7. The hot pressing fixture according to claim 4, wherein: Two cable collection members are provided on each layer plate, and the two cable collection members are respectively provided at two ends of the layer plate in the length direction.

8. The hot pressing fixture according to claim 4, wherein: The positioning member is provided with an area for placing the product to be processed. When the product to be processed is placed in the placement area, it is supported by the two guide shafts that cooperate with the layer plate. The corresponding support point connection line determines the support shaft, and the forces on both sides supported by the support shaft are balanced.

9. The hot pressing fixture according to claim 6, wherein: The preset fold is one and divides the bottom of the positioning member into two halves. The bottom of the positioning member protrudes toward the first direction of the hot pressing fixture with the preset fold as a convex ridge.

10. The hot pressing fixture according to claim 6, wherein: The free ends of the two side walls of the positioning member are respectively folded outwards at right angles to the corresponding side wall surfaces, and the two folded free ends are respectively fixed to the corresponding layer plates.

11. The hot pressing fixture according to claim 6, wherein: The distance between the center of gravity of the lithium battery to be processed and the edge of the layer plate close to the opening side of the positioning member is 15% to 35% of the width of the layer plate.

12. A hot pressing device, characterized in that: It comprises a control device and a hot pressing fixture as described in any one of claims 1 to 11, wherein the driving end of the control device is fixed to the pressing plate of the hot pressing fixture to control the movement of the pressing plate.

Images