Hot pressing device

Abstract

The utility model relates to a hot-pressing device. The hot-pressing device comprises a hot-pressing driving mechanism, a first hot-pressing mechanism, a second hot-pressing mechanism, a film clamping mechanism and a jacking mechanism, and before the battery cell is transferred, the supporting assembly can be driven to locally jack the thin film, so that a transfer supporting surface is formed above the second hot pressing plate. The clamping jaw firstly places the battery cell on the transfer supporting surface, and the transfer supporting surface can only be in local contact with the battery cell, so that the clamping jaw is suspended, and the clamping jaw can be withdrawn by loosening the clamping jaw. And then, the jacking mechanism is withdrawn to flatten the film, and the battery cell is stably carried on the film. When the pressing driving mechanism drives the first hot pressing plate and the second hot pressing plate to get close to each other, the first hot pressing plate can press the thin film and the battery cell carried on the thin film on the second hot pressing plate. Therefore, in the process of transferring the battery cell to the second hot pressing plate, the battery cell can be prevented from shaking or toppling over through the transfer of the thin film, so that the stable placement of the battery cell is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of battery equipment, in particular to a hot pressing device. Background Art

[0002] During the preparation of battery cells, loose battery cells need to be compacted after they are stacked. The hot pressing device commonly used for battery cell pressing has an upper pressing plate and a lower pressing plate that are relatively arranged. After the battery cells are stacked, the battery cells are generally moved between the upper pressing plate and the lower pressing plate by clamping jaws for hot pressing. When the battery cells are placed on the lower pressing plate, the lower part of the clamping jaws will be spaced between the lower pressing plate and the battery cells. However, since the clamping jaws themselves have a certain thickness, the battery cells will be tilted. Moreover, the thickness of the battery cells is generally large, so when the clamping jaws are pulled out, the battery cells may shake or even fall over, making it impossible to place the battery cells steadily on the lower pressing plate. Utility Model Content

[0003] Based on this, it is necessary to provide a hot pressing device that can achieve stable placement of battery cells to address the above problems.

[0004] A hot pressing device comprises a hot pressing driving mechanism, a first hot pressing mechanism and a second hot pressing mechanism, wherein the first hot pressing mechanism and the second hot pressing mechanism respectively comprise a first hot pressing plate and a second hot pressing plate, and the hot pressing device further comprises:

[0005] a film clamping mechanism capable of placing a film between the first hot pressing plate and the second hot pressing plate; and

[0006] The lifting mechanism includes a driving component and a supporting component. The supporting component can be moved between the film and the second hot pressing plate under the drive of the driving component and lift the film toward the first hot pressing plate. The part of the film lifted by the supporting component forms a transfer supporting surface for carrying the battery cell.

[0007] In one of the embodiments, the film clamping mechanism can provide tensioning force for the film to tighten the film, and during the process in which the driving component drives the support member to withdraw, the film is gradually flattened under the tensioning force of the film clamping mechanism.

[0008] In one embodiment, the film clamping mechanism includes a tensioning member and clamping plates distributed on opposite side edges of the second hot pressing plate, and two ends of the film are clamped by the clamping plates on both sides and tensioned by the tensioning member.

[0009] In one embodiment, when the heat pressing driving mechanism drives the first heat pressing plate and the second heat pressing plate to approach each other, the first heat pressing mechanism can drive the film to move to fit with the bearing surface of the second heat pressing plate.

[0010] In one of the embodiments, the film clamping mechanism is slidably arranged along the clamping direction, and the first hot pressing mechanism also includes a pressing member. When the hot pressing driving mechanism drives the first hot pressing plate and the second hot pressing plate to approach each other, the pressing member can be supported by the film clamping mechanism and drive the film clamping mechanism to move along the clamping direction until the film is driven to fit the bearing surface of the second hot pressing plate.

[0011] In one of the embodiments, the second heat pressing mechanism further includes a guide column and an elastic member, the guide column extends along the clamping direction, the film clamping mechanism is sleeved on the guide column, and the film clamping mechanism is supported by the elastic member so that the film and the bearing surface of the second heat pressing plate are spaced apart. In the process of the heat pressing driving mechanism driving the first heat pressing plate and the second heat pressing plate to approach each other, the pressing member can overcome the elastic force of the elastic member and drive the film clamping mechanism to move along the clamping direction.

[0012] In one embodiment, the support assembly includes at least two elongated lifting members, and at least two of the lifting members are arranged in parallel and at intervals.

[0013] In one of the embodiments, the lifting member is configured as a lifting roller.

[0014] In one embodiment, the lifting member includes a first lifting member and a second lifting member, and the driving component can drive the first lifting member and the second lifting member to move closer to or away from each other so that the first lifting member and the second lifting member move in or out between the film and the second hot pressing plate. The driving component can also drive the first lifting member and the second lifting member to rise and fall synchronously along the pressing direction to lift or flatten the film.

[0015] In one embodiment, the driving assembly includes a lifting drive member, a lifting plate, a translation drive member and a mounting plate. The lifting plate is installed at the driving end of the lifting drive member and can be lifted and lowered along the clamping direction under the drive of the lifting drive member. The translation drive member and the mounting plate are both installed on the lifting plate. The first lifting member and the second lifting member can be slidably installed on the mounting plate. The translation drive member can drive the first lifting member and the second lifting member to move closer to or away from each other along the mounting plate.

[0016] In one of the embodiments, a limiting plate is provided on the mounting plate, and the translation driving member can drive the first lifting member and the second lifting member to approach each other along the mounting plate until they abut against the limiting plate.

[0017] In one embodiment, two driving components are provided, and the two driving components are located on both sides of the extension direction of the first lifting member and the second lifting member, and each driving component includes two translation driving components respectively connected to the first lifting member and the second lifting member.

[0018] In one of the embodiments, the first heat pressing mechanism further includes a short circuit detection component.

[0019] In one of the embodiments, the first hot pressing mechanism also includes a first limit block, which can move synchronously with the first hot pressing plate; the second hot pressing mechanism also includes a second limit block, which is fixed relative to the second hot pressing plate, and the first limit block has a first position and a second position. When the first limit block is located at the first position, during the process of the first hot pressing plate moving toward the second hot pressing plate, the first limit block can abut against the second limit block before the first hot pressing plate abuts against the second hot pressing plate; when the first limit block is located at the second position, it can give way to the second limit block.

[0020] In one of the embodiments, it also includes a frame, on which a guide rod extending along the pressing direction and a guide sleeve slidably mounted on the guide rod are provided, the second hot pressing mechanism is fixedly mounted on the frame, and the first hot pressing mechanism is arranged on the guide sleeve and is transmission-connected to the hot pressing drive mechanism.

[0021] The above-mentioned hot pressing device can first cause the support component to partially lift the film before transferring the battery cell, thereby forming a transfer support surface above the second hot pressing plate. The clamping jaws first place the battery cell on the transfer support surface, and the transfer support surface can only contact part of the battery cell, so that the clamping jaws are suspended in the air, so they can be withdrawn by loosening the clamping jaws. Then, the lifting mechanism is withdrawn to flatten the film, and the battery cell will be stably supported on the film. As the pressure drive mechanism drives the first hot pressing plate and the second hot pressing plate to approach each other, the first hot pressing plate can press the film and the battery cell supported on the film onto the second hot pressing plate. It can be seen that in the process of transferring the battery cell to the second hot pressing plate, the transfer through the film can avoid shaking or tipping of the battery cell, thereby achieving stable placement of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 paying creative work.

[0023] Figure 1This is a front view of the hot pressing device in a preferred embodiment of the utility model;

[0024] Figure 2 for Figure 1 A side view of the hot pressing device shown;

[0025] Figure 3 for Figure 1 A front view of a local structure where a second hot pressing mechanism is located in the hot pressing device shown;

[0026] Figure 4 for Figure 3 A top view of the local structure shown;

[0027] Figure 5 for Figure 3 The local structure shown is a side view of the lifting mechanism omitted;

[0028] Figure 6 for Figure 3 The partial structure shown omits the front view of the sandwich structure;

[0029] Figure 7 for Figure 6 Axonometric drawing of the partial structure shown;

[0030] Figure 8 for Figure 1 A simplified schematic diagram of a hot pressing operation performed by a hot pressing device is shown. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0037] See also Figure 1 and Figure 2 The hot pressing device 100 in a preferred embodiment of the present invention includes a hot pressing driving mechanism 110 , a first hot pressing mechanism 120 , a second hot pressing mechanism 130 , a film clamping mechanism 140 and a lifting mechanism 150 .

[0038] The first hot pressing mechanism 120 includes a first hot pressing plate 121, and the second hot pressing mechanism 130 includes a second hot pressing plate 131. The first hot pressing plate 121 and the second hot pressing plate 131 are arranged opposite to each other along the pressing direction (usually the vertical direction), and a pressing space for placing the battery cell can be formed between the two (not shown). In actual use, the second hot pressing plate 131 is located below the first hot pressing plate 121, and the battery cell to be pressed is placed on the bearing surface of the second hot pressing plate 131. The hot pressing drive mechanism 110 can adopt structures such as a cylinder and a motor threaded screw pair. The hot pressing drive mechanism 110 can drive the first hot pressing plate 121 and the second hot pressing plate 131 away from or close to each other in the pressing direction, thereby opening the pressing space or pressing the battery cell located in the pressing space. A heating rod can be embedded in both the first hot pressing plate 121 and the second hot pressing plate 131, so as to heat the battery cell in the pressing space.

[0039] The first hot pressing mechanism 120 and the second hot pressing mechanism 130 can be set individually, so as to compress one battery cell at a time. In other application scenarios, the first hot pressing mechanism 120 and the second hot pressing mechanism 130 can also be set in multiple, and multiple first hot pressing mechanisms 120 and multiple second hot pressing mechanisms 130 are alternately stacked along the pressing direction, and the first hot pressing plate 121 of each first hot pressing mechanism 120 is arranged opposite to the second hot pressing plate 131 of the adjacent second hot pressing mechanism 130 to form a pressing space for placing the battery cell. In this way, multiple pressing spaces can be formed in the hot pressing device 100, so that multiple battery cells can be placed at the same time. Then, the hot pressing drive mechanism 110 drives multiple first hot pressing plates 121 and corresponding second hot pressing plates 131 to approach each other, so that multiple battery cells can be pressed at the same time to improve production efficiency.

[0040] For the convenience of explanation, this embodiment is described only for the case where a single first heat pressing mechanism 120 and a single second heat pressing mechanism 130 are provided.

[0041] In addition, in this embodiment, the hot pressing device 100 further includes a frame 160 for supporting the hot pressing driving mechanism 110, the first hot pressing mechanism 120 and the second hot pressing mechanism 130. The frame 160 is provided with a plurality of Figure 1 As shown, a guide rod 161 extending in the vertical direction and a guide sleeve 162 slidably mounted on the guide rod 161 , the second hot pressing mechanism 130 is fixedly mounted on the frame 160 , and the first hot pressing mechanism 120 is disposed on the guide sleeve 162 and is transmission-connected to the hot pressing driving mechanism 110 .

[0042] When performing the hot pressing operation, the second hot pressing plate 131 remains fixed, and the hot pressing driving mechanism 110 drives the first hot pressing mechanism 120 to slide downward along the guide rod 161, thereby driving the first hot pressing plate 121 to move toward the second hot pressing plate 131. Moreover, the guide sleeve 162 cooperates with the guide rod 161 to accurately guide the moving direction of the first hot pressing plate 121, thereby ensuring the accuracy of pressing.

[0043] Specifically, the frame 160 includes a top plate 163 and a bottom plate 164 disposed opposite to each other along the pressing direction, and both ends of the guide rod 161 are respectively connected to the top plate 163 and the bottom plate 164. The hot pressing driving mechanism 110 is mounted on the top plate 163, and the second hot pressing mechanism 130 is mounted on the bottom plate 164.

[0044] In this embodiment, the first hot pressing mechanism 120 further includes a short circuit detection component 123. When the first hot pressing plate 121 moves toward the second hot pressing plate 131 and clamps the battery cell, the contact of the short circuit detection component 123 just contacts the positive and negative electrodes of the battery cell, thereby facilitating short circuit detection.

[0045] In this embodiment, the first hot pressing mechanism 120 further includes a first stopper 124, which can move synchronously with the first hot pressing plate 121; the second hot pressing mechanism 130 further includes a second stopper 134, which is fixedly arranged relative to the second hot pressing plate 131. The first stopper 124 has a first position and a second position. When the first stopper 124 is located at the first position, in the process of the first hot pressing plate 121 moving toward the second hot pressing plate 131, the first stopper 124 can abut against the second stopper 134 before the first hot pressing plate 121 abuts against the second hot pressing plate 131; when the first stopper 124 is located at the second position, it can give way to the second stopper 134. When the equipment needs to be repaired, the first stopper 124 is moved to the first position. At this time, the second stopper 134 can abut against the first stopper 124 to prevent the first hot pressing plate 121 from continuing to press downward, thereby avoiding injury to personnel. When the heat pressing operation is performed normally, the second limiting block 134 is moved to the second position.

[0046] In addition, the first hot pressing mechanism 120 further includes an air blowing component 125 , which can blow air toward the battery cells in the pressing space, thereby cooling the battery cells and blowing away dust.

[0047] Please also read Figure 3 and Figure 4 The film clamping mechanism 140 can set the film 200 between the first hot pressing plate 121 and the second hot pressing plate 131. Moreover, the film 200 can be moved to fit with the bearing surface of the second hot pressing plate 131.

[0048] In the initial state of the film clamping mechanism 140, the stretched film 200 is located above the bearing surface of the second hot pressing plate 131 and is roughly parallel to the bearing surface. In the process of transferring the battery cell to be pressed to the second hot pressing plate 131, the film 200 can play a role in supporting and transferring the battery cell. Specifically, the battery cell is first moved to the film 200, and when the film 200 moves to fit the bearing surface of the second hot pressing plate 131, the battery cell carried by the film 200 can be transferred to the second hot pressing plate 131.

[0049] The film 200 may be an elastic film with a certain degree of ductility, but in order to support the battery cell stably, the film 200 is preferably formed of a material with lower ductility. Among them, the film clamping mechanism 140 can drive the clamped film 200 to move in the pressing direction through its own power element, so that the film 200 moves to fit the bearing surface of the second hot pressing plate 131, or away from the bearing surface of the second hot pressing plate 131. In addition, the film clamping mechanism 140 can also be forced to move in the pressing direction as a whole by external force, so as to achieve the purpose of driving the film 200 to move relative to the second hot pressing plate 131. The film clamping mechanism 140 can also keep its position fixed, and the film 200 can be moved relative to the second hot pressing plate 131 by releasing or tightening the clamped film 200 and cooperating with external force.

[0050] Please also read Figure 5 In this embodiment, the film clamping mechanism 140 includes clamping plates 141 and tensioning members 142 distributed on opposite side edges of the second hot pressing plate 131 . Both ends of the film 200 are clamped by the clamping plates 141 on both sides and tensioned by the tensioning members 142 .

[0051] Specifically, the tensioning member 142 can be a tensioning cylinder, a spring, etc. The tensioning member 142 can be connected to the clamps 141 on both sides, and can provide tensioning force for the clamps 141 on both sides, so as to tension the film 200. Moreover, the tensioning force of the tensioning member 142 can be adjusted in real time by a proportional valve, so that the film 200 is always in a tensioned state. The film 200 in a tensioned state can improve the stability of the battery cell when carrying the battery cell. The clamp 141 can clamp and smooth the film 200, so as to effectively prevent the film 200 from wrinkling. Moreover, since the film 200 is a wearing part, it needs to be replaced frequently. The film 200 clamped and fixed by the clamp 141 is convenient to disassemble and assemble, and is also convenient to replace.

[0052] Specifically, the film clamping mechanism 140 further includes a support plate 144, which extends from the clamping plate 141 on one side to the clamping plate 141 on the other side, and the clamping plates 141 on both sides can be slidably mounted on the support plate 144 through guide rails and sliders. The tensioning member 142 is also mounted on the support plate 144 and is transmission-connected to the clamping plate 141. In order to support the clamping plate 141 more stably, support plates 144 are provided at both ends of the clamping plate 141, and each support plate 144 is provided with a tensioning member 142.

[0053] Please refer again Figure 3 and Figure 4 The lifting mechanism 150 includes a driving assembly 151 and a supporting assembly 152. The supporting assembly 152 can be driven by the driving assembly 151 to move between the film 200 and the second hot pressing plate 131 and lift the film 200 toward the first hot pressing plate 121. The portion of the film 200 lifted by the supporting assembly 152 forms a transfer supporting surface 201 for carrying the battery cell (see Figure 8 ).

[0054] In the initial state of the lifting mechanism 150, the support assembly 152 is generally located outside the range of the second hot pressing plate 131. When the battery cell needs to be placed on the film 200 for transfer, the driving assembly 151 first drives the support assembly 152 to move between the film 200 and the second hot pressing plate 131, and then drives the support assembly 152 to move toward the first hot pressing plate 131 along the pressing direction to lift part of the film 200. The transfer support surface 201 formed by the lifting of the film 200 by the support assembly 152 protrudes upward relative to the bearing surface of the second hot pressing plate 131, and the range of the transfer support surface 201 is generally smaller than the range of the bearing surface of the second hot pressing plate 131.

[0055] The battery cell to be compressed is placed on the transfer support surface 201 by the clamping jaws, and the part of the battery cell in contact with the clamping jaws does not contact the transfer support surface 201. That is, when the battery cell is placed on the transfer support surface 201, the clamping jaws can be suspended in the air, and the clamping jaws do not contact the film 200 and the support assembly 152. The clamping jaws can be withdrawn by loosening them, which will not affect the transfer support surface 201 and will not cause the battery cell to shake.

[0056] After the battery cell is placed on the transfer support surface 201, the driving component 151 drives the support component 152 to withdraw. During the withdrawal of the support component 152, the film 200 is gradually flattened, so that the battery cell will be stably supported on the film 200. As the film 200 moves to fit the support surface of the second hot pressing plate 131, the battery cell supported on the film 200 will also be transferred to the second hot pressing plate 131. It can be seen that in the process of transferring the battery cell to the second hot pressing plate 131, the transfer through the film 200 can avoid shaking or tipping of the battery cell, thereby achieving stable placement of the battery cell.

[0057] In this embodiment, when the heat pressing driving mechanism 110 drives the first heat pressing plate 121 and the second heat pressing plate 131 to approach each other, the first heat pressing mechanism 120 can drive the film 200 to move to fit with the bearing surface of the second heat pressing plate 131. In this way, the film 200 can be driven to move relative to the second heat pressing plate 131 by the pressing force of the heat pressing driving mechanism 110, so there is no need to set up a power element for the film 200, which helps to simplify the structure.

[0058] Please refer again Figure 3 and Figure 5 In the present embodiment, the film clamping mechanism 140 is slidably arranged along the clamping direction, and the first hot pressing mechanism 120 also includes a lower pressing member 122. When the hot pressing driving mechanism 110 drives the first hot pressing plate 121 and the second hot pressing plate 131 to approach each other, the lower pressing member 122 can be supported by the film clamping mechanism 140 and drive the film clamping mechanism 140 to move along the clamping direction until the film 200 is brought into contact with the bearing surface of the second hot pressing plate 131.

[0059] Specifically, the film clamping mechanism 140 can be slidably disposed on the base or bottom plate 164 of the second hot pressing mechanism 130. A stopper 143 capable of abutting and cooperating with the lower pressing member 122 is disposed on the support plate 144 of the film clamping mechanism 140. When the hot pressing driving mechanism 110 drives the first hot pressing plate 121 to move toward the second hot pressing plate 131, the lower pressing member 122 can move with the first hot pressing plate 121 and abut against the stopper 143, thereby forcing the film clamping mechanism 140 to move downward as a whole. As the first hot pressing plate 121 continues to press downward, the film 200 is finally made to fit the bearing surface of the second hot pressing plate 131, and the first hot pressing plate 121 presses the battery cell and the film 200 against the second hot pressing plate 131. Since the first hot pressing mechanism 120 drives the film 200 to move relative to the second hot pressing plate 131 by driving the film clamping mechanism 140 to move as a whole during the pressing process, the pulling on the film 200 is small, which can slow down the wear speed of the film 200, thereby reducing the frequency of replacing the film 200.

[0060] Furthermore, in the present embodiment, the second heat pressing mechanism 130 further includes a guide column 132 and an elastic member 133, the guide column 132 extends in the clamping direction, the film clamping mechanism 140 is sleeved on the guide column 132, and the film clamping mechanism 140 is supported by the elastic member 133 so that the film 200 is spaced apart from the bearing surface of the second heat pressing plate 131. In the process of the heat pressing driving mechanism 110 driving the first heat pressing plate 121 and the second heat pressing plate 131 to approach each other, the lower pressing member 122 can overcome the elastic force of the elastic member 133 and drive the film clamping mechanism 140 to move in the clamping direction.

[0061] Specifically, the guide post 132 can be fixedly mounted on the base or bottom plate 164 of the second hot pressing mechanism 130, and the elastic member 133 can be a compression spring sleeved on the guide post 132. Specifically, a mounting hole is opened on the support plate 144 of the film clamping mechanism 140, and the guide post 132 is sleeved through the mounting hole. The support plate 144 presses the compression spring sleeved on the guide post 132, and the end of the guide post 132 is locked by a nut, so as to prevent the support plate 144 from withdrawing from the guide post 132.

[0062] When the lower pressing member 122 drives the film clamping mechanism 140 to move along the clamping direction as a whole through the support plate 144, the elastic pre-tightening force generated by the elastic member 133 can keep the lower pressing member 122 and the stopper 143 in contact with the ground, thereby preventing the film clamping mechanism 140 from shaking. Moreover, at the moment when the lower pressing member 122 contacts the stopper 143, the elastic member 133 can also play a buffering role. After the hot pressing of the battery cell is completed and the first hot pressing mechanism 120 is withdrawn, the film clamping mechanism 140 can also automatically reset under the action of the elastic member 133, so that the film 200 automatically enters the ready state for transferring to the next battery cell.

[0063] Please also read Figure 6 and Figure 7 In this embodiment, the support assembly 152 includes at least two long strip-shaped lifting members, and the at least two lifting members are arranged in parallel and at intervals.

[0064] The long strip lifting member can move in a narrow space, thereby reducing the space occupied by the support assembly 152. Moreover, when at least two lifting members lift the film 200 together, a flat transfer support surface 201 can be formed on the at least two lifting members, so that the battery cell can be more stably supported.

[0065] The lifting member can be configured as a rod-shaped structure with a cross section of a direction, a circle, a hexagon or other shapes. Specifically, in this embodiment, the lifting member is configured as a lifting roller. The surface of the lifting roller is smooth, which can reduce the friction between it and the film 200, thereby slowing down the wear speed of the film 200.

[0066] In addition, each lifting roller can be configured to rotate around its own axis, and its rotation axis is parallel to the bearing surface of the second hot pressing plate 131. In this way, during the lifting and withdrawal process of the lifting member, the lifting member can roll along the surface of the film 200, thereby further reducing the friction between it and the film 200, thereby further slowing down the wear speed of the film 200.

[0067] Furthermore, in this embodiment, the lifting member includes a first lifting member a and a second lifting member b. The driving component 151 can drive the first lifting member a and the second lifting member b to move closer to or away from each other, so that the first lifting member a and the second lifting member b move in or out between the film 200 and the second hot pressing plate 131. The driving component 151 can also drive the first lifting member a and the second lifting member b to rise and fall synchronously along the pressing direction, so as to lift or flatten the film 200.

[0068] When the lifting mechanism 150 is in the initial state, the first lifting member a and the second lifting member b are both located outside the range of the bearing surface of the second hot pressing plate 131 and are respectively located on opposite sides of the second hot pressing plate 131. When the film 200 is required to transfer the battery cell, the first lifting member a and the second lifting member b can be driven by the driving component 151 to move from both sides of the second hot pressing plate 131 into between the film 200 and the second hot pressing plate 131, and approach each other to the required distance.

[0069] Next, when the first lifting member a and the second lifting member b lift the film 200, the portion of the film 200 stretched between the first lifting member a and the second lifting member b will form a transfer support surface 201. Moreover, by controlling the distance between the first lifting member a and the second lifting member b, the range of the transfer support surface 201 can be adjusted, thereby facilitating transfer for different types of battery cells.

[0070] It should be noted that in other embodiments, the support component 152 may be in other forms, as long as it can be moved to the bottom of the film 200 and lift the film 200 to form a transfer support surface 201 that can support the battery cell. For example, the support component 152 may be a ring, which can be driven by the driving component 151 to move to the direction of the film 200 and lift the film 200, thereby forming a circular transfer support surface 201.

[0071] Combine the following Figures 1 to 8 , a brief description is given of the working process of the hot pressing device 100 performing the pressing operation on the battery cell 300:

[0072] Before placing the battery cell 300 to be compressed on the second hot pressing plate 131, the first lifting member a and the second lifting member b are driven by the driving component 151 to approach each other and move to between the film 200 and the second hot pressing plate 131; the first lifting member a and the second lifting member b are driven by the driving component 151 to synchronously lift and partially lift the film 200, thereby forming a transfer support surface 201; then, the clamping jaws 400 place the clamped battery cell 300 on the transfer support surface 201, and the clamping jaws 400 do not contact the transfer support surface 201; the first lifting member a and the second lifting member b are driven by the driving component 151 to synchronously lift and partially lift the film 200, thereby forming a transfer support surface 201; then, the clamping jaws 400 place the clamped battery cell 300 on the transfer support surface 201, and the clamping jaws 400 do not contact the transfer support surface 201; The film 200 is lowered so that the film 200 is gradually flattened, and the battery cell 300 will be stably supported on the surface of the film 200; the first lifting member a and the second lifting member b are driven by the driving component 151 to move away from each other and move out from between the film 200 and the second hot pressing plate 131; finally, the hot pressing driving mechanism 110 drives the first hot pressing plate 121 to move toward the second hot pressing plate 131, and drives the film 200 to contact the supporting surface of the second hot pressing plate 131, so the battery cell 300 will be transferred to the supporting surface of the second hot pressing plate 131; the hot pressing driving mechanism 110 continues to apply pressure, so that the battery cell 300 between the first hot pressing plate 121 and the second hot pressing plate 131 can be pressed tightly.

[0073] Please refer again Figure 6 and Figure 7 In this embodiment, the driving assembly 151 includes a lifting driving member 1511, a lifting plate 1512, a translation driving member 1513 and a mounting plate 1514. The lifting plate 1512 is installed at the driving end of the lifting driving member 1511 and can be lifted and lowered along the pressing direction under the drive of the lifting driving member 1511, the translation driving member 1513 and the mounting plate 1514 are both installed on the lifting plate 1512, the first lifting member a and the second lifting member b are slidably installed on the mounting plate 1514 along the first direction, and the translation driving member 1513 can drive the first lifting member a and the second lifting member b to move closer to or away from each other along the mounting plate 1514.

[0074] The lifting drive member 1511 is fixedly installed relative to the second hot pressing plate 131. Specifically, the lifting drive member 1511 can be fixed to the base or bottom plate 164 of the second hot pressing plate 131 through the fixing plate 1515. The mounting plate 1514 is in a long strip shape, and the first lifting member a and the second lifting member b can be installed on the mounting plate 1514 through guide rails and sliders. When the lifting drive member 1511 drives the mounting plate 1514 to rise and fall, the first lifting member a and the second lifting member b on the mounting plate 1514 can be driven to rise and fall synchronously.

[0075] In order to improve the stability of the first lifting member a and the second lifting member b, two driving assemblies 151 are provided, and the two driving assemblies 151 are respectively provided on opposite sides of the second hot pressing plate 131. Specifically, the two ends of the first lifting member a are respectively installed on the mounting plates 1514 of the two driving assemblies 151, and the two ends of the second lifting member b are also respectively installed on the mounting plates 1514 of the two driving assemblies 151. The two driving assemblies 151 can jointly drive the first lifting member a and the second lifting member b to translate and rise and fall, which can improve the stability and increase the driving force.

[0076] Specifically, each driving assembly 151 includes two translation driving members 1513, and the two translation driving members 1513 on the same driving assembly 151 are respectively connected to the first lifting member a and the second lifting member b. In this way, when the first lifting member a and the second lifting member b are approached or moved away from each other, they are driven by the two translation driving members 1513.

[0077] In addition, in this embodiment, a limiting plate 1516 is provided on the mounting plate 1514, and the translation driving member 1513 can drive the first lifting member a and the second lifting member b to approach each other along the mounting plate 1514 until they abut against the limiting plate 1516. The limiting plate 1516 is used to control the spacing distance between the first lifting member a and the second lifting member b to prevent the distance between the first lifting member a and the second lifting member b from being too small.

[0078] In the case where two sets of driving components 151 are provided, the limiting plate 1516 provided on one mounting plate 1514 is used to limit the first lifting member a, and the limiting plate 1516 provided on the other mounting plate 1514 is used to limit the second lifting member b.

[0079] The hot pressing device 100 can firstly cause the support assembly 152 to partially lift the film 200 before transferring the battery cell 300, so as to form a transfer support surface 201 above the second hot pressing plate 131. The clamp 400 first places the battery cell 300 on the transfer support surface 201, and the transfer support surface 201 can only contact a part of the battery cell 300, so that the clamp 400 is suspended in the air, so it can be withdrawn by releasing the clamp 400. Then, the lifting mechanism 150 is withdrawn to flatten the film 200, and the battery cell 300 will be stably supported on the film 200. As the pressure drive mechanism 110 drives the first hot pressing plate 121 and the second hot pressing plate 131 to approach each other, the first hot pressing plate 121 can press the film 200 and the battery cell 300 supported on the film 200 on the second hot pressing plate 131. It can be seen that in the process of transferring the battery cell 300 to the second hot pressing plate 131 , the battery cell 300 can be prevented from shaking or falling over by transferring through the film 200 , thereby achieving stable placement of the battery cell 300 .

[0080] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0081] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A hot pressing device, comprising a hot pressing driving mechanism, a first hot pressing mechanism and a second hot pressing mechanism, wherein the first hot pressing mechanism and the second hot pressing mechanism respectively comprise a first hot pressing plate and a second hot pressing plate, wherein: The hot pressing device also includes: a film clamping mechanism capable of placing a film between the first hot pressing plate and the second hot pressing plate; and The lifting mechanism includes a driving component and a supporting component. The supporting component can be moved between the film and the second hot pressing plate under the drive of the driving component and lift the film toward the first hot pressing plate. The part of the film lifted by the supporting component forms a transfer supporting surface for carrying the battery cell.

2. The hot pressing device according to claim 1, characterized in that: The film clamping mechanism can provide tensioning force for the film to tighten the film. When the driving component drives the support member to withdraw, the film is gradually flattened under the tensioning force of the film clamping mechanism.

3. The hot pressing device according to claim 2, characterized in that: The film clamping mechanism comprises a tensioning member and clamping plates distributed on two opposite side edges of the second hot pressing plate. Two ends of the film are respectively clamped by the clamping plates on both sides and are tensioned by the tensioning member.

4. The hot pressing device according to claim 1, characterized in that: When the heat-pressing driving mechanism drives the first heat-pressing plate and the second heat-pressing plate to approach each other, the first heat-pressing mechanism can drive the film to move to fit with the bearing surface of the second heat-pressing plate.

5. The hot pressing device according to claim 1, characterized in that: The film clamping mechanism is slidably arranged along the clamping direction, and the first hot pressing mechanism also includes a lower pressing piece. During the process in which the hot pressing driving mechanism drives the first hot pressing plate and the second hot pressing plate to approach each other, the lower pressing piece can be supported by the film clamping mechanism and drive the film clamping mechanism to move along the clamping direction until the film is driven to fit the bearing surface of the second hot pressing plate.

6. The hot pressing device according to claim 5, characterized in that: The second hot pressing mechanism also includes a guide column and an elastic member, the guide column extends along the clamping direction, the film clamping mechanism is sleeved on the guide column, and the film clamping mechanism is supported by the elastic member so that the film and the bearing surface of the second hot pressing plate are spaced apart. In the process of the hot pressing driving mechanism driving the first hot pressing plate and the second hot pressing plate to approach each other, the pressing member can overcome the elastic force of the elastic member and drive the film clamping mechanism to move along the clamping direction.

7. The hot pressing device according to claim 1, characterized in that: The support assembly includes at least two long strip-shaped lifting members, and at least two of the lifting members are arranged in parallel and at intervals.

8. The hot pressing device according to claim 7, characterized in that: The lifting member is configured as a lifting roller.

9. The hot pressing device according to claim 7, characterized in that: The lifting member includes a first lifting member and a second lifting member. The driving component can drive the first lifting member and the second lifting member to move closer to or away from each other so that the first lifting member and the second lifting member move in or out between the film and the second hot pressing plate. The driving component can also drive the first lifting member and the second lifting member to rise and fall synchronously along the pressing direction so as to lift or flatten the film.

10. The hot pressing device according to claim 9, characterized in that: The driving assembly includes a lifting drive member, a lifting plate, a translation drive member and a mounting plate. The lifting plate is installed at the driving end of the lifting drive member and can be lifted and lowered along the clamping direction under the drive of the lifting drive member. The translation drive member and the mounting plate are both installed on the lifting plate. The first lifting member and the second lifting member can be slidably installed on the mounting plate. The translation drive member can drive the first lifting member and the second lifting member to move closer to or away from each other along the mounting plate.

11. The hot pressing device according to claim 10, characterized in that: A limiting plate is arranged on the mounting plate, and the translation driving member can drive the first lifting member and the second lifting member to approach each other along the mounting plate until they abut against the limiting plate.

12. The hot pressing device according to claim 10, characterized in that: There are two driving assemblies, which are located on both sides of the extension direction of the first lifting member and the second lifting member, and each driving assembly includes two translation driving members respectively connected to the first lifting member and the second lifting member.

13. The hot pressing device according to claim 1, characterized in that: The first heat pressing mechanism also includes a short circuit detection component.

14. The hot pressing device according to claim 1, characterized in that: The first hot pressing mechanism also includes a first limit block, which can move synchronously with the first hot pressing plate; the second hot pressing mechanism also includes a second limit block, which is fixed relative to the second hot pressing plate, and the first limit block has a first position and a second position. When the first limit block is located at the first position, during the process of the first hot pressing plate moving toward the second hot pressing plate, the first limit block can abut against the second limit block before the first hot pressing plate abuts against the second hot pressing plate; when the first limit block is located at the second position, it can give way to the second limit block.

15. The hot pressing device according to any one of claims 1 to 14, characterized in that: It also includes a frame, on which a guide rod extending along the pressing direction and a guide sleeve slidably mounted on the guide rod are provided, the second hot pressing mechanism is fixedly mounted on the frame, and the first hot pressing mechanism is arranged on the guide sleeve and is transmission-connected to the hot pressing drive mechanism.

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