Hot-pressing device and lamination apparatus

Abstract

The application discloses a hot-pressing device and a lamination equipment. The second hot-pressing plate of the hot-pressing device is arranged in parallel relative to the first hot-pressing plate, and the second hot-pressing plate is movable relative to the first hot-pressing plate along a first direction. A hot-pressing area is formed between the first hot-pressing plate and the second hot-pressing plate. The protection film assembly comprises a protection film and a tensioning mechanism. The two ends of the protection film along a second direction are connected to the tensioning mechanism respectively, so that the protection film is arranged in tension in the hot-pressing area. The supporting assembly comprises a supporting plate and a moving mechanism. The size of the supporting plate along the second direction is smaller than the size of the battery cell. The moving mechanism can drive the supporting plate to move towards the second hot-pressing plate, so that the supporting plate abuts against the protection film and the center of the protection film is protruded towards the second hot-pressing plate, or the moving mechanism can drive the supporting plate to move out of the hot-pressing area along the second direction. Therefore, the feeding and discharging of the battery cell are facilitated, the surface flatness of the hot-pressing plate is ensured, and the finished product quality of the battery cell is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery processing equipment, and in particular to a hot-pressing device and a lamination equipment. BACKGROUND

[0002] Before the hot-pressing of the battery cell, the battery cell is usually placed on the hot-pressing plate of the hot-pressing device by the clamping jaw. Since the clamping jaw located at the lower side of the battery cell will be in contact with the hot-pressing plate, the clamping jaw will form a dragging effect on the battery cell in the process of releasing the battery cell, which will cause the displacement of the battery cell and cannot ensure the positional accuracy of the battery cell. Meanwhile, after the hot-pressing of the battery cell is completed, since the lower side of the battery cell is in close contact with the hot-pressing plate, if the clamping jaw is directly used to clamp the battery cell, the battery cell will be easily damaged. In the related art, a liftable movable plate is usually arranged in the middle of the lower hot-pressing plate to facilitate the clamping and releasing of the battery cell by the clamping jaw. However, in practice, after the movable plate in the middle of the lower hot-pressing plate is lifted for many times, it cannot ensure that the surface of the movable plate is flush with the surface of the lower hot-pressing plate. When the surface height of the movable plate is inconsistent with the surface height of the lower hot-pressing plate, the surface of the battery cell will be easily formed with a pressure mark, which will affect the quality of the battery cell. SUMMARY

[0003] The present application discloses a hot-pressing device and a lamination equipment, which can facilitate the feeding and discharging of the battery cell and ensure the flatness of the surface of the hot-pressing plate, thereby improving the finished product quality of the battery cell.

[0004] To achieve the above-mentioned purpose, in a first aspect, the present application discloses a hot-pressing device for hot-pressing treatment of a battery cell, which comprises:

[0005] a first hot-pressing plate;

[0006] a second hot-pressing plate, which is arranged in parallel with the first hot-pressing plate and is movable relative to the first hot-pressing plate along a first direction, and a hot-pressing area is formed between the first hot-pressing plate and the second hot-pressing plate;

[0007] a protective film assembly, which comprises a protective film and a tensioning mechanism, and the two ends of the protective film along a second direction are connected to the tensioning mechanism, so that the protective film is arranged in tension in the hot-pressing area;

[0008] a support assembly, which comprises a support plate and a transfer mechanism, the size of the support plate along the second direction is smaller than the size of the battery cell, and the transfer mechanism can drive the support plate to move towards the second hot-pressing plate, so that the support plate abuts against the protective film and the protective film is bulged towards the second hot-pressing plate, or drive the support plate to move along the second direction out of the hot-pressing area;

[0009] The first direction is a thickness direction of the first hot press plate or the second hot press plate, and the second direction is perpendicular to the first direction.

[0010] As an optional implementation, in the embodiment of the first aspect of the present application, the transfer mechanism comprises a first adjusting mechanism and a second adjusting mechanism, both of which are connected with the support plate, the first adjusting mechanism is used to drive the support plate to move relative to the first hot press plate along the first direction, and the second adjusting mechanism is used to drive the support plate to move along the second direction.

[0011] As an optional implementation, in the embodiment of the first aspect of the present application, the second adjusting mechanism comprises a first driving part and a track, the track is located outside the hot press area and extends along the second direction, the first adjusting mechanism is arranged on the track, the support plate is arranged on the first adjusting mechanism, and the first driving part is used to drive the first adjusting mechanism to move along the track to drive the support plate to move along the second direction.

[0012] As an optional implementation, in the embodiment of the first aspect of the present application, the tensioning mechanism comprises a first clamping mechanism, a second clamping mechanism and a distance adjusting mechanism, the first clamping mechanism and the second clamping mechanism are arranged at intervals along the second direction, the two ends of the protective film are connected to the first clamping mechanism and the second clamping mechanism respectively, and the first clamping mechanism and the second clamping mechanism are connected to the distance adjusting mechanism, the distance adjusting mechanism is used to drive the first clamping mechanism and the second clamping mechanism to move towards each other or away from each other to adjust the distance between the first clamping mechanism and the second clamping mechanism, so that the protective film is kept in a tensioned state.

[0013] As an optional implementation, in the embodiment of the first aspect of the present application, the number of distance adjusting mechanisms is two, and the number of transfer mechanisms is two, both of the distance adjusting mechanisms and both of the transfer mechanisms are arranged on both sides of the first hot press plate along a third direction, and the third direction is a direction perpendicular to both the first direction and the second direction.

[0014] As an optional implementation, in the embodiment of the first aspect of the present application, the hot-pressing device further comprises a first mounting plate, a side of the first hot-pressing plate away from the second hot-pressing plate is connected to the first mounting plate, the tensioning mechanism further comprises a second mounting plate and an elastic member, two ends of the elastic member along the first direction are connected to the first mounting plate and the second mounting plate respectively, the second mounting plate is movable relative to the first mounting plate along the first direction, and the distance adjusting mechanism is arranged on a side of the second mounting plate away from the first mounting plate and located outside the hot-pressing area.

[0015] As an optional implementation, in the embodiment of the first aspect of the present application, the tensioning mechanism further comprises an abutting block, the abutting block is connected to a side of the distance adjusting mechanism away from the second mounting plate, the hot-pressing device further comprises an auxiliary plate, the auxiliary plate is connected to the second hot-pressing plate, when the second hot-pressing plate moves along the first direction towards the first hot-pressing plate, the auxiliary plate abuts against the abutting block, so that the tensioning mechanism moves towards the first mounting plate until the protective film is attached to the first hot-pressing plate.

[0016] As an optional implementation, in the embodiment of the first aspect of the present application, the tensioning mechanism and the moving mechanism are both arranged on the first mounting plate.

[0017] As an optional implementation, in the embodiment of the first aspect of the present application, along the second direction, the size of the support plate is smaller than the size of the battery cell.

[0018] As an optional implementation, in the embodiment of the first aspect of the present application, the material of the protective film is Teflon cloth or stainless steel belt.

[0019] In the second aspect, the present application discloses a lamination device, which comprises a clamping jaw and the hot-pressing device as described in the first aspect above, the clamping jaw is used to clamp a battery cell, and the clamping jaw is used to place the battery cell on the protective film or take the battery cell off the protective film.

[0020] Compared with the prior art, the present application has the following beneficial effects:

[0021] The heat pressing device and the lamination equipment provided by the embodiment of the present application form a heat pressing area between the first heat pressing plate and the second heat pressing plate, and the second heat pressing plate is movable relative to the first heat pressing plate. The two ends of the protective film in the second direction are connected to the tensioning mechanism respectively, so that the protective film is tensioned and arranged in the heat pressing area. The size of the support plate in the second direction is smaller than the size of the battery cell. The transfer mechanism can drive the support plate to move towards the second heat pressing plate, so that the support plate abuts against the protective film and the center of the protective film protrudes towards the second heat pressing plate. At this time, the battery cell is transferred to the center of the protective film by the gripper, that is, the battery cell is placed in the position where the protective film is abutted by the support plate, so that the battery cell is transferred to the heat pressing device. Since the size of the support plate in the second direction is smaller than the size of the battery cell, the battery cell is at least partially suspended relative to the protective film when the battery cell is placed on the protective film, which is beneficial to the clamping of the gripper, thereby facilitating the release of the battery cell by the gripper, so that the relative position of the battery cell is fixed during heat pressing, which is beneficial to the heat pressing treatment of the battery cell by the heat pressing device. In addition, the transfer mechanism can drive the support plate to move to the outside of the heat pressing area in the second direction, so that the heat pressing area is only provided with the battery cell and the protective film with extremely small thickness, so as to ensure the surface flatness of the first heat pressing plate and the second heat pressing plate relative to the battery cell during heat pressing of the battery cell, avoid the situation that the surface of the battery cell is pressed to form an indentation after heat pressing due to the support plate located between the first heat pressing plate and the second heat pressing plate, and ensure the quality of the battery cell after heat pressing treatment.

[0022] It can be seen that the heat pressing device and the lamination equipment provided by the present application are beneficial to the feeding and discharging of the battery cell, and at the same time, the surface flatness of the heat pressing plate is ensured, which is beneficial to improving the quality of the finished battery cell. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. 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 creative labor based on these drawings.

[0024] Figure 1 A front view of the heat pressing device disclosed by the embodiment of the present application;

[0025] Figure 2 A top view of the heat pressing device disclosed by the embodiment of the present application;

[0026] Figure 3 A structure schematic diagram of the heat pressing device when the protective film is in the first state disclosed by the embodiment of the present application;

[0027] Figure 4 A structure schematic diagram of the heat pressing device when the protective film is in the second state disclosed by the embodiment of the present application

[0028] Figure 5A schematic view of the hot pressing device when the protective film disclosed in the embodiments of the present application is switched between the first state and the second state and the supporting plate is located in the hot pressing area;

[0029] Figure 6 A front view of the hot pressing device when the supporting plate disclosed in the embodiments of the present application is located outside the hot pressing area;

[0030] Figure 7 A top view of the hot pressing device when the supporting plate disclosed in the embodiments of the present application is located outside the hot pressing area;

[0031] Figure 8 A schematic view of the hot pressing device when the second hot pressing plate abuts against the battery cell.

[0032] Main figure mark explanation: 100-hot pressing device; 10-first hot pressing plate; 20-second hot pressing plate; 30-protective film assembly; 31-protective film; 32-tensioning mechanism; 321-first clamping mechanism; 322-second clamping mechanism; 323-distance adjusting mechanism; 3231-second driving part; 3232-first movable part; 3233-second movable part; 324-second mounting plate; 325-elastic member; 326-abutting block; 40-supporting assembly; 41-supporting plate; 42-transfer mechanism; 421-first adjusting mechanism; 422-second adjusting mechanism; 4221-first driving part; 4222-rail; 50-first mounting plate; 101-clamping jaw; 200-battery cell; X-first direction; Y-second direction; Z-third direction. DETAILED DESCRIPTION

[0033] In order to solve the technical problems mentioned in the background of the present application, the present application provides a hot pressing device and a lamination equipment, specifically by setting a protective film assembly between the first hot pressing plate and the second hot pressing plate, setting a supporting assembly between the protective film of the protective film assembly and the first hot pressing plate, and making the supporting plate of the supporting assembly movable along the first direction and the second direction, when the supporting plate of the supporting assembly is moved along the first direction to abut against the protective film and make the center of the protective film protrude towards the second hot pressing plate, since the size of the supporting plate along the second direction is smaller than the size of the battery cell, when the battery cell is transferred to be placed on the protective film, the battery cell is at least partially suspended relative to the protective film, so as to facilitate the clamping or releasing of the battery cell by the clamping jaw; when the supporting assembly is moved along the second direction to be located outside the hot pressing area formed by the first hot pressing plate and the second hot pressing plate, the hot pressing area is only provided with the battery cell and the protective film with extremely small thickness, so as to ensure the surface flatness of the first hot pressing plate and the second hot pressing plate relative to the battery cell during the hot pressing of the battery cell, thereby solving the problems of inconvenient feeding and discharging of the battery cell and the quality decline of the battery cell caused by the uneven surface of the hot pressing plate.

[0034] The way in which the present application solves the technical problems proposed in the background will be further described below in combination with embodiments and drawings.

[0035] Referring to Figures 1 to 3 In a first aspect, the present application provides a hot-pressing device 100 for hot-pressing an electric cell 200. The hot-pressing device 100 clamps the electric cell 200 by a clamp jaw 101 to achieve feeding and discharging of the electric cell 200. Specifically, the hot-pressing device 100 comprises a first hot-pressing plate 10, a second hot-pressing plate 20, a protective film assembly 30, and a supporting assembly 40. The electric cell 200 is placed between the first hot-pressing plate 10 and the second hot-pressing plate 20 of the hot-pressing device 100 by the clamp jaw 101 to be hot-pressed. Specifically, the second hot-pressing plate 20 is arranged parallel to the first hot-pressing plate 10, and the first hot-pressing plate 10 is movable relative to the first hot-pressing plate 10 along a first direction X. A hot-pressing area is formed between the first hot-pressing plate 10 and the second hot-pressing plate 20. The protective film assembly 30 comprises a protective film 31 and a tensioning mechanism 32. The two ends of the protective film 31 along a second direction Y are respectively connected to the tensioning mechanism 32, so that the protective film 31 is tightly arranged in the hot-pressing area. The supporting assembly 40 comprises a supporting plate 41 and a moving mechanism 42. The size of the supporting plate 41 along the second direction Y is smaller than that of the electric cell 200. The moving mechanism 42 can drive the supporting plate 41 to move towards the second hot-pressing plate 20 along the first direction X, so that the supporting plate 41 abuts against the protective film 31 and the center of the protective film 31 is raised towards the second hot-pressing plate 20, or the moving mechanism 42 drives the supporting plate 41 to move out of the hot-pressing area along the second direction Y. The first direction X is the thickness direction of the first hot-pressing plate 10 or the second hot-pressing plate 20, and the second direction Y is perpendicular to the first direction X.

[0036] The heat pressing device 100 provided by the embodiment of the present application forms a heat pressing area between the first heat pressing plate 10 and the second heat pressing plate 20, and the second heat pressing plate 20 is movable relative to the first heat pressing plate 10. The two ends of the protective film 31 along the second direction Y are connected to the tensioning mechanism 32 respectively, so that the protective film 31 is tensioned and arranged in the heat pressing area. The size of the support plate 41 along the second direction Y is smaller than the size of the battery cell 200. The moving mechanism 42 is used to drive the support plate 41 to move along the first direction X or the second direction Y. Before the battery cell 200 is transferred to the heat pressing device 100, the protective film 31 is horizontally tensioned and arranged in the heat pressing area. The moving mechanism 42 is used to drive the support plate 41 to move along the first direction X towards the second heat pressing plate 20, so that the support plate 41 abuts against the protective film 31 and the center of the protective film 31 protrudes towards the second heat pressing plate 20. At this time, the battery cell 200 is transferred to the center of the protective film 31 by the clamping jaw 101, that is, the battery cell 200 is placed in the position where the protective film 31 is abutted by the support plate 41, so that the battery cell 200 is transferred to the heat pressing device 100. Since the size of the support plate 41 along the second direction Y is smaller than the size of the battery cell 200, when the battery cell 200 is placed on the protective film 31, the battery cell 200 is at least partially suspended relative to the protective film 31, which is beneficial to the clamping of the clamping jaw 101, thereby facilitating the release of the battery cell 200 by the clamping jaw 101, so that the relative position of the battery cell 200 is fixed during heat pressing, which is beneficial to the heat pressing treatment of the battery cell 200 by the heat pressing device 100. In addition, the moving mechanism 42 is arranged to drive the support plate 41 to move along the first direction X towards the first heat pressing plate 10, so that the protective film 31 can return to the horizontal tensioned state, and the moving mechanism 42 is arranged to drive the support plate 41 to move along the second direction Y to the outside of the heat pressing area, so that the heat pressing area is only provided with the battery cell 200 and the protective film 31 with extremely small thickness, so as to ensure the surface flatness of the first heat pressing plate 10 and the second heat pressing plate 20 relative to the battery cell 200 during the heat pressing of the battery cell 200, and avoid the situation that the surface of the battery cell 200 is pressed to form an indentation after heat pressing due to the support plate 41 being located between the first heat pressing plate 10 and the second heat pressing plate 20, so as to ensure the quality of the battery cell after heat pressing.

[0037] Optionally, the first state is defined as the state that the protective film 31 is abutted by the support plate 41, and the center of the protective film 31 is at least partially protruded towards the second heat pressing plate 20. The second state is defined as the state that the protective film 31 is attached to the first heat pressing plate 10. Please refer to Figure 3 When the protective film 31 is in the first state, since the size of the support plate 41 along the second direction Y is smaller than the size of the battery cell 200, when the battery cell 200 is placed on the protective film 31, the battery cell 200 is at least partially suspended relative to the protective film 31, which is beneficial to the clamping or release of the battery cell 200 placed on the protective film 31 by the clamping jaw 101, so as to facilitate the feeding and discharging of the battery cell 200 by the heat pressing device 100. Please refer to Figure 4When the protective film 31 is in the second state, the protective film 31 is closely attached to the surface of the first hot pressing plate 10, which is conducive to the hot pressing treatment of the battery cell 200 by the hot pressing device 100, and avoids the damage of the second hot pressing plate 20 or the first hot pressing plate 10 to the protective film 31 when the second hot pressing plate 20 moves towards the first hot pressing plate 10. At the same time, the protective film 31 is attached to the first hot pressing plate 10, which can fix the position of the battery cell 200 placed on the protective film 31 relative to the first hot pressing plate 10, so as to ensure the quality of the battery cell 200 after hot pressing treatment.

[0038] Optionally, the size of the protective film 31 is configured to be greater than or equal to the size of the battery cell 200, so that each part of the battery cell 200 can be supported during the process of switching the protective film 31 from the first state to the second state, to avoid the deformation of the battery cell 200 due to partial long-term suspension.

[0039] In some optional embodiments, the material of the protective film 31 can be Teflon cloth or stainless steel belt, so that the protective film 31 has certain strength and softness, which can adapt to the shape change of the protective film 31, support the battery cell 200, and also adapt to the temperature of the hot pressing process. In addition, the thickness of the protective film 31 is small enough to ensure that the protective film 31 remains intact during hot pressing, and to avoid the influence of the protective film 31 between the first hot pressing plate 10 and the second hot pressing plate 20 on the hot pressing treatment of the battery cell 200. In addition, the protective film 31 has non-stick property, which can avoid the adhesion of the battery cell 200 after hot pressing, and is conducive to the unloading of the battery cell 200.

[0040] It can be understood that in other optional embodiments, the protective film 31 can also be an elastic film, so that when the supporting plate 41 moves to release the supporting effect of the protective film 31, the protective film 31 can automatically recover to a flat and unfolded state parallel to the first hot pressing plate 10, so that the overall structure of the hot pressing device 100 is simpler.

[0041] In some embodiments, the hot pressing device 100 further comprises a first mounting plate 50, and the side of the first hot pressing plate 10 away from the second hot pressing plate 20 is connected to the first mounting plate 50, and the tensioning mechanism 32 and the transfer mechanism 42 are arranged on the first mounting plate 50, so as to reduce the size of the hot pressing device 100 in the second direction Y and the third direction Z, and to reduce the occupied area in the horizontal space.

[0042] In some embodiments, the third direction Z is defined as a direction perpendicular to both the first direction X and the second direction Y, the number of the transfer mechanisms 42 is two, and the two transfer mechanisms 42 are distributed on both sides of the first hot pressing plate 10 along the third direction Z, and the support plate 41 is connected to the transfer mechanisms 42 at both ends along the third direction Z, so that the size of the support plate 41 along the third direction Z is larger than the size of the hot pressing area, which is conducive to placing the battery cell 200 in the hot pressing area, and both ends of the support plate 41 are supported by the transfer mechanisms 42, which improves the stability of the support plate 41 and the supporting effect on the battery cell 200.

[0043] It can be understood that the two transfer mechanisms 42 move synchronously during work to maintain the balance of the two ends of the support plate 41 and ensure the reliability of the support plate 41.

[0044] In some embodiments, the transfer mechanism 42 includes a first adjusting mechanism 421 and a second adjusting mechanism 422, both of which are connected to the support plate 41, the first adjusting mechanism 421 is used to drive the support plate 41 to move along the first direction X relative to the first hot pressing plate 10, and the second adjusting mechanism 422 is used to drive the support plate 41 to move along the second direction Y.

[0045] In this way, when the first adjusting mechanism 421 drives the support plate 41 to move towards the second hot pressing plate 20, the support plate 41 drives the local part of the protective film 31 to protrude towards the direction of the second hot pressing plate 20, so that the protective film 31 is switched to the first state (see Figure 3 ), at this time, the clamping jaw 101 can transfer and place the battery cell 200 on the position where the support plate 41 abuts against the protective film 31, and since the size of the support plate 41 along the second direction Y is smaller than the size of the battery cell 200, the battery cell 200 can be at least partially suspended relative to the protective film 31, which is conducive to the clamping of the clamping jaw 101, so as to facilitate the release of the battery cell 200 by the clamping jaw 101, and avoid the situation that the battery cell 200 is dragged due to the limitation when the clamping jaw 101 releases the battery cell 200. Please see Figure 5 , the first adjusting mechanism 421 drives the support plate 41 to move towards the first hot pressing plate 10 to release the abutting effect on the protective film 31, so that the protective film 31 is laid flat, at this time, the battery cell 200 is supported by the protective film 31, please see Figure 6 and Figure 7 , and then the second adjusting mechanism 422 drives the support plate 41 to move along the second direction Y to the outside of the hot pressing area, so that only the protective film 31 and the battery cell 200 are between the first hot pressing plate 10 and the second hot pressing plate 20, which ensures the surface flatness of the first hot pressing plate 10 and the second hot pressing plate 20 relative to the battery cell 200, so that the second hot pressing plate 20 moves to abut against the battery cell 200 (see Figure 8), the first thermal pressing plate 10 and the second thermal pressing plate 20 are flat relative to the surface of the battery cell 200, which can avoid the situation that the surface of the battery cell 200 is pressed after the thermal pressing due to the support plate 41 located between the first thermal pressing plate 10 and the second thermal pressing plate 20, so as to ensure the quality of the battery cell 200 after the thermal pressing.

[0046] Optionally, the first adjusting mechanism 421 can be a cylinder or a motor, and the output end of the first adjusting mechanism 421 is connected to the support plate 41, and the support plate 41 is driven to move along the first direction X relative to the first thermal pressing plate 10 by the first adjusting mechanism 421.

[0047] Please refer to Figure 3 and Figure 4 Optionally, the second adjusting mechanism 422 includes a first driving part 4221 and a track 4222, the track 4222 is located outside the thermal pressing area and extends along the second direction Y, the first adjusting mechanism 421 is arranged on the track 4222, and the support plate 41 is arranged on the output end of the first adjusting mechanism 421, so that the support plate 41 can move along with the movement of the first adjusting mechanism 421, and the first driving part 4221 is used to drive the first adjusting mechanism 421 to move along the track 4222, so as to drive the support plate 41 to move along the second direction Y.

[0048] The design of the track 4222 can guide the movement of the support plate 41 along the second direction Y, and when the support plate 41 is driven by the first driving part 4221 to move along the track 4222 to the outside of the thermal pressing area, the flatness of the first thermal pressing plate 10 and the second thermal pressing plate 20 relative to the surface of the battery cell 200 during the thermal pressing process can be improved, so as to ensure the quality of the battery cell 200 after the thermal pressing, and when the battery cell 200 needs to be loaded or unloaded, the support plate 41 is driven by the first driving part 4221 to move along the track 4222 to the thermal pressing area, and the movement of the support plate 41 along the first direction X is adjusted, so that the protective film 31 is switched to the first state, and the protective film 31 and the support plate 41 are supported on part of the area of the battery cell 200, and the battery cell 200 is at least partially suspended relative to the protective film 31, so as to facilitate the clamping jaw 101 to grab or release the battery cell 200, thereby facilitating the loading and unloading of the battery cell 200.

[0049] As an optional embodiment, the first driving part 4221 can be a linear motor, the track 4222 can be a sliding rail, the support plate 41 is arranged on the output end of the first adjusting mechanism 421, the first adjusting mechanism 421 is movably connected to the track 4222, and the first driving part 4221 is connected to the first adjusting mechanism 421, so as to drive the first adjusting mechanism 421 to move along the track 4222, thereby driving the support plate 41 to move along the second direction Y.

[0050] As another alternative, the first driving mechanism can be a rotating motor, the track can include a screw rod and a nut seat, the first driving part 4221 is connected to the screw rod of the track 4222, the support plate 41 is arranged at the output end of the first adjusting mechanism 421, and the first adjusting mechanism 421 can be connected to the nut seat, so that the first adjusting mechanism 421 and the support plate 41 can be driven to move along the second direction Y by the sliding movement of the nut seat relative to the screw rod.

[0051] In some embodiments, the tensioning mechanism 32 includes a first clamping mechanism 321, a second clamping mechanism 322, and a spacing adjusting mechanism 323. The first clamping mechanism 321 and the second clamping mechanism 322 are arranged at intervals along the second direction Y, and the two ends of the protective film 31 are respectively connected to the first clamping mechanism 321 and the second clamping mechanism 322. The first clamping mechanism 321 and the second clamping mechanism 322 are movably connected to the spacing adjusting mechanism 323. The spacing adjusting mechanism 323 is used to drive the first clamping mechanism 321 and the second clamping mechanism 322 to move towards each other or away from each other, so as to adjust the distance between the first clamping mechanism 321 and the second clamping mechanism 322, so that the protective film 31 is in the first state or the second state, and the protective film 31 remains in a tensioned state when switching between the first state and the second state. When the support plate 41 moves towards the second hot pressing plate 20 along the first direction X, the first clamping mechanism 321 and the second clamping mechanism 322 are driven by the third driving mechanism to move towards each other, so as to reduce the distance between the first clamping mechanism 321 and the second clamping mechanism 322, so as to adjust the shape of the protective film 31, so that the protective film 31 changes from a tensioned state of being flat and unfolded to a tensioned state of being locally convex relative to the first hot pressing plate 10 along the first direction X, that is, the protective film 31 can adaptively adjust its shape to follow the movement of the support plate 41, so that the protective film 31 always remains in a tensioned state to support the battery cell 200, and ensures that the protective film 31 will not be broken by being driven by the movement of the support plate 41.

[0052] Please refer to Figure 3 and Figure 5When the support plate 41 is located between the protective film 31 and the first hot pressing plate 10 and moves towards the second hot pressing plate 20 along the first direction X, the protective film 31 has a change trend of locally bulging towards the second hot pressing plate 20 under the action of the support plate 41, at this time, the distance adjusting mechanism 323 drives the first clamping mechanism 321 and the second clamping mechanism 322 to move towards each other to reduce the distance of the two ends of the protective film 31 along the second direction Y, so that the position of the protective film 31 abutting against the support plate 41 can bulge towards the second hot pressing plate 20, thereby switching to the first state. When the support plate 41 moves towards the first hot pressing plate 10 along the first direction X to release the supporting effect on the protective film 31, the distance adjusting mechanism 323 drives the first clamping mechanism 321 and the second clamping mechanism 322 to move away from each other to increase the distance of the two ends of the protective film 31 along the second direction Y, so that the protective film 31 restores the flat and unfolded state parallel to the first hot pressing plate 10, thereby facilitating the switching of the protective film 31 to the second state, thereby facilitating the hot pressing treatment of the battery cell 200 by the first hot pressing plate 10 and the second hot pressing plate 20.

[0053] Optionally, the distance adjusting mechanism 323 is located outside the hot pressing area, and the first clamping mechanism 321 and the second clamping mechanism 322 respectively extend from one end of the hot pressing area to the other end of the hot pressing area along the third direction Z, so that the first clamping mechanism 321 and the second clamping mechanism 322 can adapt to a protective film 31 with a large enough size, so that the protective film 31 covers the entire hot pressing area to ensure that the battery cell 200 is always located within the hot pressing area when placed on the protective film 31.

[0054] Optionally, the first clamping mechanism 321 and the second clamping mechanism 322 each can include a first clamping part, a second clamping part, and a fastener, the first clamping part and the second clamping part are sequentially arranged along the first direction X and correspondingly provided with fixing holes, the protective film 31 is clamped between the first clamping part and the second clamping part, and the fastener is arranged in the fixing hole to fix the two ends of the protective film 31 to the first clamping mechanism 321 and the second clamping mechanism 322, respectively.

[0055] Optionally, the number of distance adjusting mechanisms 323 can be two, and the two distance adjusting mechanisms 323 are respectively arranged on both sides of the first hot pressing plate 10 along the third direction Z, and the first clamping mechanism 321 and the second clamping mechanism 322 are respectively connected to the two distance adjusting mechanisms 323 along the two ends of the third direction Z, so that the connection of the first clamping mechanism 321 and the second clamping mechanism 322 is stable and reliable.

[0056] It can be understood that the two distance adjusting mechanisms 323 move synchronously in operation to move the two ends of the first clamping mechanism 321 and the second clamping mechanism 322 simultaneously, thereby ensuring the reliability of the first clamping mechanism 321 and the second clamping mechanism 322 and avoiding the problems of distortion of the protective film 31 or damage of the protective film 31 due to the two ends of the first clamping mechanism 321 and the second clamping mechanism 322 not being on the same straight line in the third direction Z.

[0057] Optionally, the distance adjusting mechanism 323 comprises a second driving part 3231, a first movable part 3232 and a second movable part 3233, the first movable part 3232 and the second movable part 3233 are respectively connected to the two sides of the second driving part 3231, one end of the first movable part 3232 away from the second driving part 3231 is connected to the first clamping mechanism 321, one end of the second movable part 3233 away from the second driving part 3231 is connected to the second clamping mechanism 322, and the second driving part 3231 is used for driving the first movable part 3232 and the second movable part 3233 to move towards or away from each other to adjust the distance between the first clamping mechanism 321 and the second clamping mechanism 322.

[0058] In this way, the second driving part 3231 is indirectly connected to the first clamping mechanism 321 and the second clamping mechanism 322 through the first movable part 3232 and the second movable part 3233, so that the distance adjusting mechanism 323 can adjust the distance between the first clamping mechanism 321 and the second clamping mechanism 322 by adjusting the distance between the first movable part 3232 and the second movable part 3233, thereby enabling the protective film 31 to adjust the shape along with the movement of the support plate 41 or the second hot pressing plate 20.

[0059] Optionally, the first movable part 3232 and the second movable part 3233 respectively extend away from the second driving part 3231 in the second direction Y to increase the distance between the first clamping mechanism 321 and the second clamping mechanism 322, so that the first clamping mechanism 321 and the second clamping mechanism 322 can adapt to the protective film 31 with a larger size.

[0060] It can be understood that the second driving part 3231 can be a pneumatic cylinder, and the first movable part 3232 and the second movable part 3233 can be long strip plate structures, and the first movable part 3232 and the second movable part 3233 are respectively connected to the second driving part 3231 to enable the first movable part 3232 and the second movable part 3233 to move relative to the second driving part 3231, thereby driving the first clamping mechanism 321 and the second clamping mechanism 322 to move to adjust the distance between the first clamping mechanism 321 and the second clamping mechanism 322.

[0061] Please combineFigure 4 and Figure 6 In some embodiments, as known from the foregoing, the first mounting plate 50 is connected to the side of the first hot pressing plate 10 away from the second hot pressing plate 20, based on which, the tensioning mechanism 32 further comprises a second mounting plate 324 and an elastic member 325, and the elastic member 325 is connected to the first mounting plate 50 and the second mounting plate 324 at two ends thereof along the first direction X respectively, the second mounting plate 324 is movably connected to the first mounting plate 50, the second mounting plate 324 is movable relative to the first mounting plate 50 along the first direction X, and the second driving portion 3231 of the distance adjusting mechanism 323 is arranged at the side of the second mounting plate 324 away from the first mounting plate 50 and located outside the hot pressing area.

[0062] In this way, by applying an external force to the second mounting plate 324 moving towards the first mounting plate 50, the elastic member 325 can be forced to compress and deform, so that the second mounting plate 324 moves towards the first mounting plate 50 to drive the movable portion 3232 to move, at which time the first clamping mechanism 321 and the second clamping mechanism 322 move following the movement of the movable portion 3232, and the protective film 31 moves along the first direction X towards the first hot pressing plate 10 under the driving of the first clamping mechanism 321 and the second clamping mechanism 322 until the protective film 31 is attached to the first hot pressing plate 10, so that the protective film 31 is switched to the second state (see Figure 4 ), thereby facilitating the hot pressing treatment of the battery cell 200 between the first hot pressing plate 10 and the second hot pressing plate 20.

[0063] Optionally, the elastic member 325 can be a structure member with elasticity such as a silica gel block, a foam column or a metal spring, wherein the material of the metal spring can be one or more of iron, copper, manganese, aluminum and the like, for example, the elastic member 325 can be a carbon steel spring.

[0064] Optionally, the tensioning mechanism 32 further comprises an abutting block 326, the abutting block 326 is arranged at the side of the first movable portion 3232 and the second movable portion 3233 of the distance adjusting mechanism 323 away from the second mounting plate 324, and the hot pressing device 100 further comprises an auxiliary plate, the auxiliary plate is arranged on the second hot pressing plate 20 and extends in the direction towards the first hot pressing plate 10, when the second hot pressing plate 20 moves along the first direction X towards the direction close to the first hot pressing plate 10, the auxiliary plate abuts against the abutting block 326, so that the abutting block 326 drives the tensioning mechanism 32 to move towards the first mounting plate 50 until the protective film 31 is attached to the first hot pressing plate 10, thereby enabling the protective film 31 to be switched to the second state before the second hot pressing plate 20 abuts against the battery cell 200, so as to facilitate the hot pressing treatment of the battery cell 200 between the first hot pressing plate 10 and the second hot pressing plate 20.

[0065] When the second hot pressing plate 20 moves towards the first hot pressing plate 10, the auxiliary plate abuts against the abutting block 326, the abutting block 326 provides a force to the second mounting plate 324 along the first direction X towards the first hot pressing plate 10 through the spacing adjustment mechanism 323, so that the elastic member 325 is compressed and deformed under the force, thereby moving the second mounting plate 324 towards the first mounting plate 50 to drive the movable part 3232 to move, at this time, the first clamping mechanism 321 and the second clamping mechanism 322 move following the movement of the first movable part 3232 and the second movable part 3233, and the protective film 31 moves along the first direction X towards the first hot pressing plate 10 under the driving of the first clamping mechanism 321 and the second clamping mechanism 322 to adhere to the first hot pressing plate 10, so that the protective film 31 switches to the second state (see Figure 4 ), thereby facilitating the hot pressing treatment of the battery cell 200 between the first hot pressing plate 10 and the second hot pressing plate 20. Please refer to Figure 8 , further drive the second hot pressing plate 20 to move towards the first hot pressing plate 10 until the second hot pressing plate 20 abuts against the battery cell 200, so that one side of the battery cell 200 abuts against the second hot pressing plate 20 along the first direction X, and the other side abuts against the protective film 31 and the first hot pressing plate 10, thereby enabling the double-sided hot pressing treatment of the battery cell 200.

[0066] Optionally, the number of abutting blocks 326 is at least two, and the at least two abutting blocks 326 are respectively arranged on the first movable part 3232 and the second movable part 3233 to adapt to the spacing adjustment between the first movable part 3232 and the second movable part 3233.

[0067] The following describes the hot pressing process of the hot pressing device 100 of the present application on the battery cell 200:

[0068] Before the clamping jaw 101 transports the battery cell 200 to the hot pressing device 100, please refer to Figure 1 , the supporting plate 41 is located in the hot pressing area and between the protective film 31 and the first hot pressing plate 10, and the protective film 31 is between the first state and the second state and remains tensioned.

[0069] Please refer to Figure 3, the first adjusting mechanism 421 drives the support plate 41 to move along the first direction X towards the second hot pressing plate 20, and meanwhile, the second driving part 3231 drives the first movable part 3232 and the second movable part 3233 to move along the second direction Y towards each other, so as to drive the first clamping mechanism 321 and the second clamping mechanism 322 to move towards each other, thereby reducing the distance between the two ends of the protective film 31 along the second direction Y, so that the position of the protective film 31 abutting against the support plate 41 can protrude towards the second hot pressing plate 20, thereby adjusting the shape of the protective film 31 and switching the protective film 31 to the first state. Then the clamping jaw 101 is used to transfer and place the battery cell 200 on the position of the support plate 41 abutting against the protective film 31. Since the protruding part of the protective film 31 towards the second hot pressing plate 20 has a size along the second direction Y smaller than that of the battery cell 200, the battery cell 200 can be at least partially suspended relative to the protective film 31, so as to facilitate the release of the battery cell 200 by the clamping jaw 101, effectively avoid the situation that the battery cell 200 is dragged due to the restriction when the clamping jaw 101 releases the battery cell 200, and fix the relative position of the battery cell 200 during hot pressing, thereby facilitating the hot pressing treatment of the battery cell 200 by the hot pressing device 100.

[0070] Please refer to Figure 5 , the first adjusting mechanism 421 drives the support plate 41 to move along the first direction X towards the first hot pressing plate 10 to release the abutting effect on the protective film 31, and meanwhile, the second driving part 3231 drives the first movable part 3232 and the second movable part 3233 to move away from each other, so as to drive the first clamping mechanism 321 and the second clamping mechanism 322 to move away from each other, thereby increasing the distance between the two ends of the protective film 31 along the second direction Y, so that the shape of the protective film 31 is adjusted to be flat and unfolded relative to the first hot pressing plate 10. At this time, the battery cell 200 is stably placed in the hot pressing device 100, and the battery cell 200 is supported by the protective film 31.

[0071] Before the hot pressing treatment, please refer to Figure 6 , the first driving part 4221 drives the support plate 41 to move along the track 4222 to the outside of the hot pressing area, so that only the protective film 31 and the battery cell 200 are between the first hot pressing plate 10 and the second hot pressing plate 20, so as to ensure the flatness of the surface of the first hot pressing plate 10 and the second hot pressing plate 20 relative to the battery cell 200.

[0072] Please refer to Figure 4, by driving the second hot pressing plate 20 to move in the first direction X towards the first hot pressing plate 10, so that the auxiliary plate abuts against the abutting block 326, at this time the abutting block 326 provides a force to the second mounting plate 324 through the distance adjusting mechanism 323, the force is in the first direction X towards the first hot pressing plate 10, so that the elastic member 325 is compressed and deformed under the force, thereby causing the second mounting plate 324 to move towards the first mounting plate 50, to drive the first movable part 3232 and the second movable part 3233 to move, at this time the first clamping mechanism 321 and the second clamping mechanism 322 move following the movement of the first movable part 3232 and the second movable part 3233, and the protective film 31 is driven by the first clamping mechanism 321 and the second clamping mechanism 322 to move in the first direction X towards the first hot pressing plate 10 to adhere to the first hot pressing plate 10, so that the protective film 31 is switched to the second state.

[0073] Please refer to Figure 8 , further drive the second hot pressing plate 20 to move in the first direction X towards the first hot pressing plate 10 until the second hot pressing plate 20 abuts against the battery cell 200, so that one side of the battery cell 200 abuts against the second hot pressing plate 20 in the first direction X, and the other side abuts against the protective film 31 and the first hot pressing plate 10, thereby performing double-sided hot pressing treatment on the battery cell 200.

[0074] After the hot pressing treatment is completed, drive the second hot pressing plate 20 to move in the first direction X away from the first hot pressing plate 10, until the auxiliary plate is separated from the abutting block 326, at this time the second mounting plate 324 moves away from the first mounting plate 50 under the elastic force of the elastic member 325, to drive the distance adjusting mechanism 323 and the first clamping mechanism 321 and the second clamping mechanism 322 to move, thereby causing the protective film 31 to move in the first direction X towards the second hot pressing plate 20 under the driving of the first clamping mechanism 321 and the second clamping mechanism 322, so that the protective film 31 is between the second state and the first state, at this time the battery cell 200 is supported by the protective film 31 (as shown in Figure 5

[0075] ​The support plate 41 is driven by the first driving part 4221 to move along the track 4222 into the hot-pressing area, and the support plate 41 is located between the protective film 31 and the first hot-pressing plate 10. The support plate 41 is driven by the first adjusting mechanism 421 to move along the first direction X towards the second hot-pressing plate 20, and at the same time, the first movable part 3232 and the second movable part 3233 are driven by the second driving part 3231 to move along the second direction Y towards each other, so as to drive the first clamping mechanism 321 and the second clamping mechanism 322 to move towards each other, so as to reduce the distance between the two ends of the protective film 31 along the second direction Y, so that the position of the protective film 31 abutting against the support plate 41 can be protruded towards the direction of the second hot-pressing plate 20, so as to adjust the shape of the protective film 31, and make the protective film 31 switch to the first state (as shown in Figure 3

[0076] The cell 200 on the protective film 31 is clamped by the clamping jaw 101. Since the size of the position of the protective film 31 abutting against the support plate 41 along the second direction Y is smaller than the size of the cell 200, the cell 200 can be at least partially suspended relative to the protective film 31, so as to facilitate the clamping of the cell 200 by the clamping jaw 101, and effectively avoid the damage of the cell 200 by the clamping jaw 101 when clamping the cell 200.

[0077] In a second aspect, the present application provides a laminating device (not shown), which comprises the clamping jaw 101 and the hot-pressing device 100 of the first aspect. The clamping jaw 101 is used to clamp the cell 200, and the clamping jaw 101 is used to place the cell 200 on the protective film 31 or take the cell 200 off the protective film 31, so as to process the cell 200.

[0078] It can be understood that since the laminating device comprises the hot-pressing device 100 of the first aspect, the laminating device has the beneficial effects of the hot-pressing device 100 of the first aspect, which will not be described here.

[0079] The first, second, third, fourth and various numerical numbers referred to in the present application are only used for differentiation for convenience of description, and do not limit the scope of the present application.

[0080] It should be understood that in various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of the processes should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0081] ​The above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features therein can be replaced by equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A hot-pressing apparatus (100), characterized by, A hot pressing device (100) for hot pressing an electric core (200), the hot pressing device (100) comprising: a first hot pressing plate (10); a second hot pressing plate (20) disposed in parallel with the first hot pressing plate (10) and movable relative to the first hot pressing plate (10) along a first direction (X), a hot pressing area being formed between the first hot pressing plate (10) and the second hot pressing plate (20); a protective film assembly (30) comprising a protective film (31) and a tensioning mechanism (32), the two ends of the protective film (31) along a second direction (Y) being connected to the tensioning mechanism (32) respectively, so that the protective film (31) is arranged in tension in the hot pressing area; a support assembly (40) comprising a support plate (41) and a moving mechanism (42), the support plate (41) being smaller in size along the second direction (Y) than the electric core (200), the moving mechanism (42) being capable of driving the support plate (41) to move towards the second hot pressing plate (20), so that the support plate (41) abuts against the protective film (31) and causes the protective film (31) to protrude towards the second hot pressing plate (20) to place the electric core, and when the electric core is placed on the protective film, the electric core is at least partially suspended relative to the protective film; the moving mechanism (42) comprising a first adjusting mechanism (421) and a second adjusting mechanism (422), the first adjusting mechanism (421) and the second adjusting mechanism (422) being connected to the support plate (41), the first adjusting mechanism (421) being used to drive the support plate (41) to move relative to the first hot pressing plate (10) along the first direction (X), and the second adjusting mechanism (422) being used to drive the support plate (41) to move out of the hot pressing area along the second direction (Y); wherein the first direction (X) is the thickness direction of the first hot pressing plate (10) or the second hot pressing plate (20), and the second direction (Y) is perpendicular to the first direction (X).

2. The hot press apparatus (100) according to claim 1, characterized in that the second adjusting mechanism (422) comprising a first driving part (4221) and a track (4222), the track (4222) being located outside the hot pressing area and extending along the second direction (Y), the first adjusting mechanism (421) being disposed on the track (4222), the support plate (41) being disposed on the first adjusting mechanism (421), and the first driving part (4221) being used to drive the first adjusting mechanism (421) to move along the track (4222) to drive the support plate (41) to move along the second direction (Y).

3. The hot press apparatus (100) according to claim 1, characterized in that The tensioning mechanism (32) comprises a first clamping mechanism (321), a second clamping mechanism (322), and a distance adjusting mechanism (323). The first clamping mechanism (321) is spaced apart from the second clamping mechanism (322) along the second direction (Y). The two ends of the protective film (31) are connected to the first clamping mechanism (321) and the second clamping mechanism (322) respectively. The first clamping mechanism (321) and the second clamping mechanism (322) are connected to the distance adjusting mechanism (323). The distance adjusting mechanism (323) is used to drive the first clamping mechanism (321) and the second clamping mechanism (322) to move towards each other or away from each other, so as to adjust the distance between the first clamping mechanism (321) and the second clamping mechanism (322), so that the protective film (31) is kept in a tensioned state.

4. The hot press apparatus (100) according to claim 3, characterized in that The number of the distance adjusting mechanisms (323) is two, and the number of the transfer mechanisms (42) is two. The two distance adjusting mechanisms (323) and the two transfer mechanisms (42) are respectively arranged on the two sides of the first hot press plate (10) along the third direction (Z). The third direction (Z) is perpendicular to the first direction (X) and the second direction (Y).

5. The hot press apparatus (100) according to claim 3, characterized in that The hot press device (100) further comprises a first mounting plate (50). The side of the first hot press plate (10) away from the second hot press plate (20) is connected to the first mounting plate (50). The tensioning mechanism (32) further comprises a second mounting plate (324) and an elastic member (325). The two ends of the elastic member (325) along the first direction (X) are respectively connected to the first mounting plate (50) and the second mounting plate (324). The second mounting plate (324) can move along the first direction (X) relative to the first mounting plate (50). The distance adjusting mechanism (323) is arranged on the side of the second mounting plate (324) away from the first mounting plate (50) and located outside the hot press area.

6. The hot press apparatus (100) according to claim 5, characterized in that The tensioning mechanism (32) further comprises an abutting block (326). The abutting block (326) is connected to the side of the distance adjusting mechanism (323) away from the second mounting plate (324). The hot press device (100) further comprises an auxiliary plate. The auxiliary plate is connected to the second hot press plate (20). When the second hot press plate (20) moves along the first direction (X) towards the first hot press plate (10), the auxiliary plate abuts against the abutting block (326), so that the tensioning mechanism (32) moves towards the first mounting plate (50), until the protective film (31) is attached to the first hot press plate (10).

7. The hot press apparatus (100) according to claim 5, characterized in that The tensioning mechanism (32) and the transfer mechanism (42) are arranged on the first mounting plate (50).

8. Hot pressing apparatus (100) according to any one of claims 1 to 7, characterized in that The material of the protective film (31) is Teflon cloth or stainless steel strip.

9. A lamination apparatus characterized by, The hot-pressing device (100) as claimed in any one of claims 1-8, wherein the hot-pressing device (100) is used for placing or taking off the battery cell (200) on or from the protective film (31).

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