CN218586035U

CN218586035U - Multilayer hot pressing equipment

Info

Publication number: CN218586035U
Application number: CN202222170314.9U
Authority: CN
Inventors: 林万盛; 贺于波; 刘名俊; 廖广源
Original assignee: Super Components Engineering Dongguan Ltd
Current assignee: Super Components Engineering Dongguan Ltd
Priority date: 2022-08-17
Filing date: 2022-08-17
Publication date: 2023-03-07
Anticipated expiration: 2032-08-17

Abstract

The utility model relates to the technical field of hot pressing treatment, in particular to a multi-layer hot pressing device, which comprises a frame, a pressure sensor, a hot pressing driving mechanism, a plurality of upper hot pressing components, a plurality of lower hot pressing components, a plurality of movable plates and a plurality of gravity counteracting mechanisms; except the movable plate at the topmost layer, the top surfaces of the other movable plates and the bottom surface of the hot pressing space are provided with lower hot pressing components; the bottom surface of each movable plate is provided with an upper hot-pressing assembly, the upper hot-pressing assembly and the lower hot-pressing assembly are arranged oppositely, two adjacent movable plates and the bottom movable plate and the bottom of the rack are connected through a gravity offsetting mechanism, and the driving end of the hot-pressing driving mechanism applies hot pressure to the top movable plate through a pressure sensor. The hot pressing efficiency of this application is high, has offset gravity to the influence of hot pressing battery, and the hot pressure that every layer of battery received is unanimous, and carries out on-line monitoring to the hot pressure through pressure sensor, has guaranteed the accuracy of hot pressure size, hot pressing battery's high quality.

Description

Multilayer hot pressing equipment

Technical Field

The utility model belongs to the technical field of the hot pressing technique and specifically relates to indicate a multilayer hot press equipment.

Background

During the production of the battery, the battery needs to be subjected to hot pressing treatment, such as: hot press molding, hot press packaging and hot press forming are all important processes in battery production. The heat treatment of the battery is generally performed by a hot press. Patent document 201821083408.X discloses a hot pressing mechanism for battery formation cabinet, which pushes a lowermost movable plate to ascend through a bearing plate, a connecting belt is bent and compressed under the action of thrust in the process, then a battery positioned on the lowermost movable plate is close to a heating plate on a movable plate adjacent to the lowermost movable plate, the battery is heated by the heating plate, the battery is extruded under the action of a pressurizing cylinder, the pressurizing cylinder continuously ascends, all the movable plates in a supporting assembly are sequentially attached together from bottom to top until the battery positioned on the uppermost movable plate is attached to a top plate, and all the batteries in the supporting assembly are hot pressed. Although this patent file can carry out the thermal compression to a plurality of batteries simultaneously, can't eliminate the gravity influence of fly leaf isotructure for the thermal pressure that every battery bore is inconsistent, can't guarantee the battery quality after the thermal compression, and can't detect the thermal pressure, is difficult to accurate control thermal pressure. Therefore, the drawbacks are obvious, and a solution is needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, an object of the utility model is to provide a multilayer hot pressing equipment, not only can carry out hot pressing to a plurality of batteries simultaneously, hot pressing battery's is efficient, the influence of gravity to hot pressing battery has still been offset, make the hot pressure that every layer of battery received unanimous, guaranteed to carry out hot pressing's effect and quality to the battery, and carry out on-line monitoring to hot pressure through pressure sensor, the accuracy of hot pressure size has been guaranteed, the quality after the battery carries out hot pressing has further been improved.

In order to realize the purpose, the utility model adopts the following technical scheme:

a multilayer hot pressing device comprises a rack, a pressure sensor, a hot pressing driving mechanism, a plurality of upper hot pressing assemblies, a plurality of lower hot pressing assemblies, a plurality of movable plates and a plurality of gravity force counteracting mechanisms, wherein the pressure sensor is arranged on the top surface of the movable plate at the topmost layer, the pressure sensor is electrically connected with the hot pressing driving mechanism, the movable plates are respectively connected to the rack in a sliding manner, a hot pressing space is arranged on the rack, the movable plates are arranged in the hot pressing space at intervals, and the hot pressing driving mechanism is arranged on the top of the rack; except the movable plate at the topmost layer, the top surfaces of the other movable plates and the bottom surface of the hot pressing space are provided with lower hot pressing components; the bottom surface of every fly leaf has all been installed hot pressing assembly, goes up hot pressing assembly and sets up with hot pressing assembly down relatively, all connects through offsetting the gravity mechanism between two adjacent fly leaves and between the bottom fly leaf and the bottom of frame, and hot pressing actuating mechanism's drive end stretches to in the hot pressing space suddenly, and hot pressing actuating mechanism's drive end exerts hot pressure to the fly leaf of top layer through pressure sensor, and pressure sensor is used for detecting the size that hot pressing actuating mechanism exerted hot pressure.

Furthermore, the lower hot-pressing assembly comprises a base arranged on the top surface of the movable plate or the bottom surface of the hot-pressing space, two fixed hot-pressing assemblies arranged on the base in parallel and at intervals, a movable hot-pressing assembly arranged between the two fixed hot-pressing assemblies in a lifting manner, and a telescopic structure clamped between the base and the bottom of the movable hot-pressing assembly; when the telescopic structure is compressed, the hot-pressing surface of the movable hot-pressing assembly can be flush with the hot-pressing surface of the fixed hot-pressing assembly; when the telescopic structure is extended, the hot-pressing surface of the movable hot-pressing component is protruded out of the hot-pressing surface of the fixed hot-pressing component.

Furthermore, the lower hot-pressing assembly also comprises protection pads which cover the hot-pressing surfaces of the movable hot-pressing assembly and the hot-pressing surfaces of the two fixed hot-pressing assemblies; when the hot pressing surface of the movable hot pressing assembly is flush with the hot pressing surface of the fixed hot pressing assembly, the protection pad is flatly attached to the hot pressing surface of the movable hot pressing assembly and the hot pressing surface of the fixed hot pressing assembly; when the hot-pressing surface of the movable hot-pressing assembly protrudes out of the hot-pressing surface of the fixed hot-pressing assembly, the middle part of the protection pad is bulged and is smoothly attached to the hot-pressing surface of the movable hot-pressing assembly.

Furthermore, both sides of the base are provided with a tightening mechanism, both sides of the protection pad are respectively connected with the corresponding tightening mechanisms, and the tightening mechanisms are used for tightening or loosening the protection pad; when the telescopic structure is compressed, the elastic mechanism tensions the protection pad; when the telescopic structure is extended, the elastic mechanism relaxes the protection pad.

Furthermore, extending structure includes a plurality of elastic components, and a plurality of elastic components arrange the setting along activity hot pressing assembly's length direction, and the both ends of elastic component are connected with activity hot pressing assembly and base respectively.

Furthermore, the top surface of the movable plate at the topmost layer is provided with a fixed seat, the fixed seat is connected with a sliding seat in a sliding manner, the fixed seat or the movable plate at the topmost layer is provided with a moving driving mechanism, the moving end of the moving driving mechanism is connected with the sliding seat, and the pressure sensor is arranged on the sliding seat.

Further, the gravity counteracting mechanism comprises at least two groups of telescopic drivers; between two adjacent movable plates, two ends of the telescopic driver are respectively connected with the two movable plates; and between the movable plate at the bottommost layer and the bottom of the rack, two ends of the telescopic driver are respectively connected with the movable plate at the bottommost layer and the bottom of the rack.

Further, two adjacent offsetting gravity mechanisms are arranged in a staggered mode.

Furthermore, the top surface of each movable plate is provided with a detection device, the detection device is used for detecting whether materials exist on the hot-pressing surface of the lower hot-pressing assembly, and the detection device is electrically connected with the corresponding gravity counteracting mechanism.

Furthermore, both ends of the lower hot-pressing assembly are provided with insulating base plates which protrude to the upper part of the hot-pressing surface of the lower hot-pressing assembly; the two ends of the upper hot pressing assembly are elastically connected with a short circuit testing mechanism, and the short circuit testing mechanism is arranged corresponding to the insulating base plate.

The utility model has the advantages that: this multilayer hot pressing equipment not only can carry out the hot pressing to a plurality of batteries simultaneously, and the hot pressing battery is efficient, has still offset the influence of gravity to the hot pressing battery for the hot pressure that every layer of battery received is unanimous, has guaranteed to carry out the effect and the quality of hot pressing to the battery, and carries out on-line monitoring to the hot pressure through pressure sensor, has guaranteed the accuracy of hot pressure size, has further improved the quality after the battery carries out the hot pressing.

Drawings

Fig. 1 is a schematic view of the three-dimensional structure of the present invention.

Fig. 2 is a schematic view of the three-dimensional structure of the lower hot pressing assembly and the tightening mechanism of the present invention.

Fig. 3 is a cross-sectional view of the lower hot pressing assembly and the tightening and loosening mechanism of the present invention.

Fig. 4 is an enlarged view of a point a in fig. 1.

Fig. 5 is the schematic three-dimensional structure diagram of the movable plate, the counter gravity mechanism, the short circuit testing mechanism, the upper hot-pressing assembly, the mobile driving mechanism, the fixed seat, the sliding seat and the pressure sensor of the present invention.

Description of reference numerals:

1. a frame; 11. a pressure sensor; 12. a movable plate; 13. a hot pressing space; 2. a hot pressing driving mechanism; 21. a motor; 22. a screw rod; 23. a thread plate; 24. pressing a plate; 25. a guide bar; 3. an upper hot pressing assembly; 31. a gas blowing hole; 4. a lower hot pressing assembly; 41. a base; 411. a base plate; 412. a fixing plate; 42. fixing the hot-pressing assembly; 421. fixing the heat insulation plate; 422. fixing the heating plate; 423. fixing the heating pipe; 43. a movable hot-pressing assembly; 431. a movable heat insulation plate; 432. a movable heating plate; 433. a movable heating tube; 44. a telescopic structure; 441. an elastic member; 442. a spring; 443. a first fixing hole; 444. a second fixing hole; 45. a pad; 5. a gravity counteracting mechanism; 51. a telescopic driver; 6. a tightening mechanism; 61. a connecting plate; 62. a take-up assembly; 63. a mounting base; 7. a lifting guide assembly; 71. a first limit plate; 72. a second limiting plate; 8. a fixed seat; 81. a sliding seat; 82. a movement driving mechanism; 83. a detection device; 9. an insulating base plate; 91. short circuit testing mechanism.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.

As shown in fig. 1 to 5, the utility model provides a multi-layer hot pressing device, which comprises a frame 1, a pressure sensor 11, a hot pressing driving mechanism 2, a plurality of upper hot pressing assemblies 3, a plurality of lower hot pressing assemblies 4, a plurality of movable plates 12 and a plurality of counter-gravity mechanisms 5, wherein the pressure sensor 11 is arranged on the top surface of the movable plate 12 at the topmost layer, the pressure sensor 11 is electrically connected with the hot pressing driving mechanism 2, the movable plates 12 are respectively connected to the frame 1 in a sliding manner, the frame 1 is provided with a hot pressing space 13, the movable plates 12 are arranged in the hot pressing space 13 at intervals, and the hot pressing driving mechanism 2 is arranged at the top of the frame 1; except for the movable plate 12 at the topmost layer, the top surfaces of the other movable plates 12 and the bottom surface of the hot-pressing space 13 are provided with the lower hot-pressing assembly 4; the bottom surface of each movable plate 12 is provided with an upper hot pressing assembly 3, the upper hot pressing assembly 3 is arranged opposite to the lower hot pressing assembly 4, two adjacent movable plates 12 and the bottom of the frame 1 are connected through a counter-gravity mechanism 5, the driving end of the hot pressing driving mechanism 2 extends into a hot pressing space 13, the driving end of the hot pressing driving mechanism 2 applies hot pressing force to the topmost movable plate 12 through a pressure sensor 11, and the pressure sensor 11 is used for detecting the magnitude of the hot pressing force applied by the hot pressing driving mechanism 2.

The utility model can be used by pushing up (the driving end of the hot-pressing driving mechanism 2 applies the hot pressure upwards) or pressing down (the driving end of the hot-pressing driving mechanism 2 applies the hot pressure downwards), and users can select the using state according to the actual requirements such as the situation; in the present embodiment, the pressing-down operation is taken as an example, and the supporting force required to be applied by the plurality of counterbalancing mechanisms 5 increases in order from top to bottom.

In practical applications, initially, the acting ends of the counter-gravity mechanisms 5 are in an extended state, so that the upper and lower hot pressing assemblies 3 and 4 which are oppositely arranged are in an open state, and at this time, the battery can be placed on the hot pressing surface of the lower hot pressing assembly 4, after the battery is discharged, the counter-gravity mechanisms 5 cooperate to counter the total gravity borne by all the movable plates 12, that is, the supporting force exerted by each counter-gravity mechanism 5 on the movable plate 12 connected thereto is equal to the total gravity borne by the movable plate 12, and since the total gravity borne by the movable plate 12 at the bottom is the sum of the gravity borne by the movable plates 12, the supporting force exerted by the counter-gravity mechanism 5 at the bottom is equal to the sum of the gravity borne by the movable plates 12 (for example: the supporting force applied by the third counter-gravity mechanism 5 is equal to the sum of the gravity borne by the two movable plates 12 above, the influence of gravity is eliminated, the thermal pressure of each movable plate 12 is not consistent due to the gravity of the structures such as the movable plates 12, the upper hot-pressing assembly 3, the lower hot-pressing assembly, the battery and the like, the effect of hot-pressing treatment is ensured, then the action ends of the plurality of counter-gravity mechanisms 5 contract until the plurality of movable plates 12 are drawn close downwards until the hot-pressing surface of the upper hot-pressing assembly 3 is abutted against the top surface of the battery, the upper hot-pressing assembly 3 and the lower hot-pressing assembly 4 which are arranged oppositely are in a closed state, the driving end of the hot-pressing driving mechanism 2 extends and applies a certain hot-pressing force to the movable plate 12 at the top layer through the pressure sensor 11, and in the process of applying the hot-pressing force by the hot-pressing driving mechanism 2, the action ends of the plurality of counter-gravity mechanisms 5 can synchronously work according to the extension amount of the driving end of the hot-pressing driving mechanism 2, the extending amount of the driving end of the hot pressing driving mechanism 2 is equal to the shrinking amount of the acting end of each counteracting gravity mechanism 5, when gravity is counteracted, the hot pressing force exerted by the hot pressing driving mechanism 2 acts on each battery, the hot pressing force exerted by each battery is consistent, when the pressure sensor 11 detects that the hot pressing force exerted by the hot pressing driving mechanism 2 reaches a preset value, the pressure sensor 11 feeds back information to the hot pressing driving mechanism 2, the hot pressing driving mechanism 2 maintains pressure until the hot pressing treatment of the batteries is completed, the hot pressing driving mechanism 2 releases the hot pressing force on the movable plate 12 at the topmost layer, the counteracting gravity mechanisms 5 extend and reset, the upper hot pressing assembly 3 and the lower hot pressing assembly 4 which are oppositely arranged are opened, and the batteries after the hot pressing treatment can be taken away. This multilayer hot pressing equipment not only can carry out the hot pressing to a plurality of batteries simultaneously, and the hot pressing battery is efficient, has still offset the influence of gravity to the hot pressing battery for the hot pressure that every layer of battery received is unanimous, has guaranteed to carry out the effect and the quality of hot pressing to the battery, and carries out on-line monitoring to the hot pressure through pressure sensor 11, has guaranteed the accuracy of hot pressure size, has further improved the quality after the battery carries out the hot pressing.

In this embodiment, the lower hot pressing assembly 4 includes a base 41 installed on the top surface of the movable plate 12 or the bottom surface of the hot pressing space 13, two fixed hot pressing assemblies 42 installed on the base 41 in parallel and at intervals, a movable hot pressing assembly 43 installed between the two fixed hot pressing assemblies 42 in a lifting manner, and a telescopic structure 44 installed between the base 41 and the bottom of the movable hot pressing assembly 43 in a clamping manner; when the telescopic structure 44 is compressed, the hot pressing surface of the movable hot pressing assembly 43 can be flush with the hot pressing surface of the fixed hot pressing assembly 42; when the telescopic structure 44 is extended, the hot-pressing surface of the movable hot-pressing unit 43 protrudes out of the hot-pressing surface of the fixed hot-pressing unit 42.

When the lower hot-pressing assembly 4 and the upper hot-pressing assembly 3 are in an open state, the telescopic structure 44 is in an extended state, the hot-pressing surface of the movable hot-pressing assembly 43 protrudes out of the hot-pressing surface of the fixed hot-pressing assembly 42, a battery is placed on the hot-pressing surface of the movable hot-pressing assembly 43 of the lower hot-pressing assembly 4 by a manual or a mechanical hand, because the hot-pressing surface of the movable hot-pressing assembly 43 is higher than the hot-pressing surface of the fixed hot-pressing assembly 42 at the moment, an avoidance space is formed between the side wall of the movable hot-pressing assembly 43 and the hot-pressing surface of the fixed hot-pressing assembly 42 to provide an avoidance space for a hand or a mechanical hand, the battery is conveniently placed on the hot-pressing surface of the movable hot-pressing assembly 43, and two sides of the battery are suspended above the hot-pressing surfaces of the two fixed hot-pressing assemblies 42, and then the hot-pressing driving mechanism 2 applies a hot pressing force to enable the lower hot-pressing assembly 4 and the upper hot-pressing assembly 3 to be close to each other, so that the upper hot-pressing surface of the upper hot-pressing component 3 abuts against the top surface of the battery and applies hot-pressing force to the battery, at the moment, the telescopic structure 44 is compressed, so that the movable hot-pressing component 43 together with the battery synchronously moves downwards relative to the fixed hot-pressing component 42 until the hot-pressing surface of the movable hot-pressing component 43 is flush with the hot-pressing surface of the fixed hot-pressing component 42 to form a lower hot-pressing surface of the lower hot-pressing component 4, the bottom surface of the battery is attached to the hot-pressing surface of the movable hot-pressing component 43 and the hot-pressing surface of the fixed hot-pressing component 42 (the lower hot-pressing surface of the lower hot-pressing component 4), the battery is subjected to hot-pressing treatment under the hot-pressing fit of the lower hot-pressing surface of the lower hot-pressing component 4 and the upper hot-pressing surface of the upper hot-pressing component 3, after the hot-pressing treatment is finished, the hot-pressing driving mechanism 2 cancels the application of the hot-pressing force, the gravity counteracting mechanism 5 extends, the lower hot-pressing component 4 and the upper hot-pressing component 3 move away from each other and reset, and gradually moves away from the lower hot-pressing component 4 along with the upper hot-pressing component 3, the telescopic structure 44 gradually extends, the movable hot-pressing assembly 43 is gradually lifted under the extending action of the telescopic structure 44 until the telescopic structure 44 completely extends, the movable hot-pressing assembly 43 is recovered to the initial position, and the hot-pressing surface of the movable hot-pressing assembly 43 with the battery after the hot-pressing treatment protrudes out of the hot-pressing surface of the fixed hot-pressing assembly 42, so that the battery after the hot-pressing treatment can be conveniently taken away by hands or a manipulator, and the next battery can be conveniently placed on the hot-pressing surface of the movable hot-pressing assembly 43. This structural design's lower hot pressing subassembly 4, it goes up and down to drive activity hot pressing subassembly 43 relatively fixed hot pressing subassembly 42 through extending structure 44, not only can make the hot pressing face of activity hot pressing subassembly 43 and the hot pressing face parallel and level of fixed hot pressing subassembly 42, in order to carry out the hot pressing to the battery, can also make the hot pressing face of activity hot pressing subassembly 43 protrude to outside the hot pressing face of fixed hot pressing subassembly 42, in order to make and form the difference in height between the hot pressing face of activity hot pressing subassembly 43 and the hot pressing face of fixed hot pressing subassembly 42, the both sides of battery respectively with the hot pressing face separation of two fixed hot pressing subassemblies 42, in order to get and put the battery.

In order to avoid the gap between the movable hot pressing assembly 43 and the fixed hot pressing assembly 42 from generating an indentation on the surface of the material after the hot pressing process, in this embodiment, the lower hot pressing assembly 4 further includes a pad 45 covering the hot pressing surface of the movable hot pressing assembly 43 and the hot pressing surfaces of the two fixed hot pressing assemblies 42; when the hot-pressing surface of the movable hot-pressing assembly 43 is flush with the hot-pressing surface of the fixed hot-pressing assembly 42, the protection pad 45 is flatly attached to the hot-pressing surfaces of the movable hot-pressing assembly and the fixed hot-pressing assembly 42; when the hot pressing surface of the movable hot pressing assembly 43 protrudes out of the hot pressing surface of the fixed hot pressing assembly 42, the middle portion of the protection pad 45 bulges and is smoothly attached to the hot pressing surface of the movable hot pressing assembly 43. During the hot pressing treatment, the bottom surface of the battery is tightly attached to the protection pad 45, so that the battery after the hot pressing treatment cannot generate indentation. Specifically, the pad 45 may be a PET film, a thin stainless steel film, or the like.

In this embodiment, two sides of the base 41 are provided with the tightening mechanisms 6, two sides of the protection pad 45 are respectively connected with the corresponding tightening mechanisms 6, and the tightening mechanisms 6 are used for tightening or loosening the protection pad 45; when the telescopic structure 44 is compressed, the cushion 45 is tensioned by the elastic mechanism 6; when the telescopic structure 44 is extended, the elastic mechanism 6 releases the pad 45. At the beginning, the telescopic structure 44 is extended, the movable hot-pressing assembly 43 is lifted and drives the middle part of the protection pad 45 to bulge, and at this time, the tightening mechanism 6 is in a state of loosening the protection pad 45, so that the protection pad 45 is lifted along with the movable hot-pressing assembly 43. When extending structure 44 compresses, the hot pressing face of activity hot pressing subassembly 43 and the hot pressing face parallel and level of fixed hot pressing subassembly 42, the taut protection pad 45 of straining and tightening mechanism 6 for the smooth laminating of protection pad 45 is favorable to flatly carrying out the thermal pressing to the battery on the hot pressing face of activity hot pressing subassembly 43 and the hot pressing face of fixed hot pressing subassembly 42.

Specifically, the tightening mechanism 6 comprises a connecting plate 61 and one or more tightening assemblies 62, the connecting plate 61 is connected to one side of the pad 45, and the tightening ends of the tightening assemblies 62 are connected with the connecting plate 61; when the number of the elastic members 62 is plural, the plural elastic members 62 are arranged at equal intervals along the longitudinal direction of the connecting plate 61, and the connecting plate 61 is located outside the corresponding fixed thermo-compression member 42. In practice, the tensioning assembly 62 tensions or relaxes the pad 45 via the connecting plate 61 to facilitate connection of the pad 45 to the tensioning mechanism 6.

Specifically, the tightening unit 62 includes a mounting base 63 mounted on the bottom surface of the movable plate 12 or the hot pressing space 13 and a torsion spring or an automatic retractor mounted on the mounting base 63, one end of the torsion spring or a tension belt of the automatic retractor is connected to the connecting plate 61, and the mounting base 63 is located on one side of the base 41. When the middle part of the protection pad 45 is bulged, the torsion spring is in a stretching state or the automatic retractor releases the drawstring; when the hot pressing treatment is carried out, the torsion spring is in a retraction reset state or the automatic retractor is used for winding the pull belt, so that the protection pad 45 is tightly attached to the lower hot pressing surface.

Specifically, the end of the movable hot-pressing assembly 43 is slidably connected with the base 41 via the lifting guide assembly 7; specifically, the lifting guide assembly 7 includes a sliding block mounted on the movable hot-pressing assembly 43 and a sliding rail mounted on the base 41, and the sliding block is slidably connected to the sliding rail. This structural design has improved the stability that activity hot pressing subassembly 43 goes up and down.

Specifically, the fixed hot pressing assembly 42 includes a fixed heat insulation plate 421 installed on the base 41, a fixed heating plate 422 installed on the fixed heat insulation plate 421, and a fixed heating pipe 423 embedded in the fixed heating plate 422; the movable hot pressing assembly 43 includes a movable heat insulating plate 431 mounted on the base 41, a movable heating plate 432 mounted on the movable heat insulating plate 431, and a movable heating pipe 433 embedded in the movable heating plate 432; the fixed heating plate 422 and the movable heating plate 432 are both provided with temperature sensors, the fixed heating pipe 423 and the movable heating pipe 433 are respectively electrically connected with the corresponding temperature sensors, and the hot pressing temperature of the fixed heating plate 422 and the movable heating plate 432 is controlled by the temperature sensors; specifically, the base 41 includes a bottom plate 411 installed on the top surface of the movable plate 12 or the bottom surface of the hot pressing space 13 and a fixing plate 412 installed on the bottom plate 411, and two fixed heat insulation plates 421 of the fixed hot pressing assembly 42 are installed on the fixing plate 412. In practical applications, the fixed heating pipe 423 generates heat to heat the fixed heating plate 422, so that the fixed heating plate 422 is heated to the temperature of the autoclave; the movable heating pipe 433 heats to heat the movable heating plate 432, so that the movable heating plate 432 is heated to the autoclave temperature.

In this embodiment, the telescopic structure 44 includes a plurality of elastic members 441, the elastic members 441 are arranged along the length direction of the movable thermo-compression assembly 43, and two ends of the elastic members 441 are respectively connected to the movable thermo-compression assembly 43 and the base 41. When the movable hot-pressing assembly 43 is pressed and the pressure is greater than the resilience force of the elastic member 441, the elastic member 441 is compressed, and the movable hot-pressing assembly 43 moves downwards until the hot-pressing surface of the movable hot-pressing assembly 43 is flush with the hot-pressing surface of the fixed hot-pressing assembly 42, so as to perform hot-pressing treatment on the battery; when the movable thermocompression assembly 43 is not pressed or the pressed pressure is less than the resilience of the elastic member 441, the elastic member 441 stretches and drives the movable thermocompression assembly 43 to lift and reset, so as to lift the battery after thermocompression treatment.

The elastic member 441 includes a spring 442, a first fixing hole 443 recessed in a bottom surface of the movable insulation board 431 of the movable thermo-compression assembly 43, and a second fixing hole 444 recessed in a top surface of the base 41, and both ends of the spring 442 protrude into the first fixing hole 443 and the second fixing hole 444, respectively. The fixing and positioning of the spring 442 by the first fixing hole 443 and the second fixing hole 444 not only facilitates the installation of the spring 442 but also improves the operational stability of the spring 442.

The end of the movable hot pressing assembly 43 is provided with a first limit plate 71, the end of the fixed hot pressing assembly 42 or the base 41 is provided with a second limit plate 72, the second limit plate 72 is used for abutting against the first limit plate 71, and the second limit plate 72 is located above the limit part of the first limit plate 71. When the movable hot pressing assembly 43 is lifted to the initial position, the second position-limiting plate 72 abuts against the position-limiting portion of the first position-limiting plate 71 to limit the movable hot pressing assembly 43, so that the working stability of the movable hot pressing assembly 43 is improved.

In this embodiment, the top surface of the topmost movable plate 12 is provided with a fixed seat 8, the fixed seat 8 is slidably connected with a sliding seat 81, the fixed seat 8 or the topmost movable plate 12 is provided with a moving driving mechanism 82, a moving end of the moving driving mechanism 82 is connected with the sliding seat 81, and the pressure sensor 11 is installed on the sliding seat 81; specifically, the movement driving mechanism 82 may employ a horizontally disposed air cylinder.

In practical application, when the upper hot pressing assembly 3 and the lower hot pressing assembly 4 are in an open state, the pressure sensor 11 is located on one side of the driving end of the hot pressing driving mechanism 2, so that the structure of the device is compact, when the upper hot pressing assembly 3 and the lower hot pressing assembly 4 are in a closed state, the pressure sensor 11 is located below the driving end of the hot pressing driving mechanism 2, then, the movable driving mechanism 82 drives the sliding seat 81 and the pressure sensor 11 to translate to a position right below the driving end of the hot pressing driving mechanism 2, so that the pressure sensor 11 is aligned with the driving end of the hot pressing driving mechanism 2, the driving end of the hot pressing driving mechanism 2 extends to abut against the pressure sensor 11, and pressure is applied to the movable plate 12 through the pressure sensor 11. According to the working state (open or closed state) of the upper hot-pressing assembly 3 and the lower hot-pressing assembly 4, the moving driving mechanism 82 drives the sliding seat 81 and the pressure sensor 11 to reciprocate, the structural design reasonably utilizes the space generated when the plurality of gravity counteracting mechanisms 5 contract to counteract gravity, reduces the volume of the equipment, shortens the stroke and time for applying hot pressure to the movable plate 12 by the driving end of the hot-pressing driving mechanism 2, and further improves the efficiency of hot-pressing treatment.

In this embodiment, the gravity force counteracting mechanism 5 includes at least two sets of telescopic drivers 51; between two adjacent movable plates 12, two ends of the telescopic driver 51 are respectively connected with the two movable plates 12; between the bottom movable plate 12 and the bottom of the frame 1, two ends of the telescopic driver 51 are respectively connected with the bottom movable plate 12 and the bottom of the frame 1. Preferably, each counter-gravity mechanism 5 comprises two sets of telescopic drivers 51, the two sets of telescopic drivers 51 being located at both ends of the movable plate 12. In practical applications, the telescopic ends of the telescopic drivers 51 are telescopic to apply a supporting force to the corresponding movable plate 12 to counteract gravity, and the two sets of telescopic drivers 51 work synchronously to make the movable plate 12 uniformly stressed, so that the working stability is good.

Specifically, the telescopic driver 51 may be a cylinder, and a piston rod of the cylinder is detachably connected to the movable plate 12 via a quick-release structure, so as to facilitate quick assembly and disassembly of the telescopic driver 51 and the movable plate 12.

In this embodiment, the two adjacent gravity counteracting mechanisms 5 are arranged in a staggered manner, so that mutual interference of the two adjacent gravity counteracting mechanisms 5 during working is avoided, the device is compact in structure, and the size of the device is reduced.

In this embodiment, the top surface of each movable plate 12 is provided with a detection device 83, the detection device 83 is used for detecting whether a material is on the hot-pressing surface of the lower hot-pressing assembly 4, the detection device 83 is electrically connected with the corresponding counter-gravity mechanism 5, and the material may be a battery; preferably, the detection device 83 may employ a pair of photoelectric sensors. Whether a battery is on the hot-pressing surface of the lower hot-pressing assembly 4 is automatically detected through the detection device 83, so that the detection precision is high, and the action is sensitive; the detection device 83 feeds back the detection result to the counterbalancing weight mechanism 5 so that the counterbalancing weight mechanism 5 performs a corresponding action.

In this embodiment, the two ends of the lower hot-pressing assembly 4 are both provided with the insulating pad 9, the protection pad 45 is located between the hot-pressing surface of the lower hot-pressing assembly 4 and the insulating pad 9, and the insulating pad 9 protrudes above the hot-pressing surface of the lower hot-pressing assembly 4; go up hot pressing unit 3's both ends equal elastic connection and have short circuit accredited testing organization 91, short circuit accredited testing organization 91 can compress and cushion when the short circuit test, and short circuit accredited testing organization 91 corresponds the setting with insulating backing plate 9.

When the battery is placed on the protection pad 45 on the lower hot pressing assembly 4, the pole lug of the battery is positioned above the insulating pad 9, the corresponding short circuit testing mechanism 91 is positioned above the pole lug of the battery, when the upper hot pressing assembly 3 and the lower hot pressing assembly 4 are closed to carry out hot pressing treatment on the battery cell, the short circuit testing head on the short circuit testing mechanism 91 is electrically connected with the pole lug of the battery, so that the short circuit test is carried out on the battery, the synchronous completion of the hot pressing treatment and the short circuit test is realized, and the efficiency of producing the battery is improved.

Specifically, a plurality of air blowing holes 31 and air blowing channels communicated with the air blowing holes 31 are uniformly distributed on the hot pressing surface of the upper hot pressing assembly 3, and the air blowing channels are communicated with an air blower; after accomplishing the hot pressing to the battery, the gas blower blows to a plurality of gas holes 31 via blowing the air flue, and malleation gas blows to the top surface of battery via a plurality of gas holes 31 respectively for broken vacuum between the hot pressing face of going up hot pressing subassembly 3 and the top surface of battery, thereby make the hot pressing face separation of battery after the hot pressing with last hot pressing subassembly 3, prevent that the battery from following hot pressing subassembly 3 and moving upward or by going up hot pressing subassembly 3 and take, improved the stability of battery.

Specifically, the hot pressing driving mechanism 2 includes a motor 21 installed on the frame 1, a screw rod 22 rotatably connected to the frame 1, a threaded plate 23 threadedly connected to the screw rod 22, a pressing plate 24 installed on the threaded plate 23, and a guide rod 25 installed on the threaded plate 23 and slidably connected to the frame 1, and an output shaft of the motor 21 is connected to one end of the screw rod 22 via a coupling.

In actual operation, when the pressure sensor 11 is located right below the pressing plate 24, the motor 21 is started and drives the screw rod 22 to rotate, under the limiting and guiding effects of the guide rod 25, the rotating screw rod 22 drives the threaded plate 23 to move downwards along the screw rod 22, and the threaded plate 23 moving downwards drives the pressing plate 24 to move downwards, so that the pressing plate 24 abuts against the pressure sensor 11 and applies hot pressure to the movable plate 12 through the pressure sensor 11; after the hot pressing process is finished, the motor 21 rotates reversely, so that the pressing plate 24 moves upwards and resets, the movable driving mechanism 82 drives the pressure sensor 11 to move to one side of the pressing plate 24, the pressure sensor 11 and the pressing plate 24 are staggered, and when the offsetting gravity mechanism 5 extends, the pressure sensor 11 and the pressing plate 24 cannot interfere/collide, so that the equipment is compact in structure and small in size.

All the technical features in the embodiment can be freely combined according to actual needs.

The above-mentioned embodiment does the utility model discloses the implementation scheme of preferred, in addition, the utility model discloses can also realize by other modes, any obvious replacement is all within the protection scope of the utility model under the prerequisite that does not deviate from this technical scheme design.

Claims

1. A multilayer hot pressing device is characterized in that: the hot-pressing device comprises a rack, a pressure sensor, a hot-pressing driving mechanism, a plurality of upper hot-pressing assemblies, a plurality of lower hot-pressing assemblies, a plurality of movable plates and a plurality of gravity force counteracting mechanisms, wherein the pressure sensor is electrically connected with the hot-pressing driving mechanism; except the movable plate at the topmost layer, the top surfaces of the other movable plates and the bottom surface of the hot-pressing space are provided with lower hot-pressing components; the bottom surface of each movable plate is provided with an upper hot-pressing assembly, the upper hot-pressing assembly and the lower hot-pressing assembly are arranged oppositely, two adjacent movable plates and the bottom of the bottom movable plate and the bottom of the rack are connected through a gravity offsetting mechanism, the driving end of the hot-pressing driving mechanism extends into a hot-pressing space in a protruding mode, the driving end of the hot-pressing driving mechanism applies hot pressing force to the top movable plate through a pressure sensor, and the pressure sensor is used for detecting the magnitude of the hot pressing force applied by the hot-pressing driving mechanism.

2. A multi-layer hot press apparatus as claimed in claim 1, wherein: the lower hot-pressing assembly comprises a base arranged on the top surface of the movable plate or the bottom surface of the hot-pressing space, two fixed hot-pressing assemblies arranged on the base in parallel at intervals, a movable hot-pressing assembly arranged between the two fixed hot-pressing assemblies in a lifting way and a telescopic structure clamped between the base and the bottom of the movable hot-pressing assembly; when the telescopic structure is compressed, the hot pressing surface of the movable hot pressing assembly can be flush with the hot pressing surface of the fixed hot pressing assembly; when the telescopic structure is extended, the hot-pressing surface of the movable hot-pressing component is protruded out of the hot-pressing surface of the fixed hot-pressing component.

3. A multilayer hot-pressing apparatus as claimed in claim 2, characterized in that: the lower hot-pressing assembly also comprises protection pads which cover the hot-pressing surfaces of the movable hot-pressing assembly and the hot-pressing surfaces of the two fixed hot-pressing assemblies; when the hot pressing surface of the movable hot pressing assembly is flush with the hot pressing surface of the fixed hot pressing assembly, the protection pad is flatly attached to the hot pressing surface of the movable hot pressing assembly and the hot pressing surface of the fixed hot pressing assembly; when the hot-pressing surface of the movable hot-pressing assembly protrudes out of the hot-pressing surface of the fixed hot-pressing assembly, the middle part of the protection pad is bulged and is smoothly attached to the hot-pressing surface of the movable hot-pressing assembly.

4. A multi-layer hot pressing apparatus as claimed in claim 3, wherein: both sides of the base are provided with a tightening mechanism, both sides of the protection pad are respectively connected with the corresponding tightening mechanisms, and the tightening mechanisms are used for tightening or loosening the protection pad; when the telescopic structure is compressed, the elastic mechanism tensions the protection pad; when the telescopic structure is extended, the elastic mechanism relaxes the protection pad.

5. A multi-layer hot press apparatus as claimed in claim 2, wherein: the extending structure comprises a plurality of elastic pieces, the elastic pieces are arranged along the length direction of the movable hot-pressing assembly, and the two ends of each elastic piece are connected with the movable hot-pressing assembly and the base respectively.

6. A multi-layer hot press apparatus as claimed in claim 1, wherein: the top surface of the movable plate at the topmost layer is provided with a fixed seat, the fixed seat is connected with a sliding seat in a sliding way, the fixed seat or the movable plate at the topmost layer is provided with a moving driving mechanism, the moving end of the moving driving mechanism is connected with the sliding seat, and the pressure sensor is arranged on the sliding seat.

7. A multi-layer hot press apparatus as claimed in claim 1, wherein: the gravity counteracting mechanism comprises at least two groups of telescopic drivers; between two adjacent movable plates, two ends of the telescopic driver are respectively connected with the two movable plates; and between the movable plate at the bottommost layer and the bottom of the rack, two ends of the telescopic driver are respectively connected with the movable plate at the bottommost layer and the bottom of the rack.

8. A multilayer hot-pressing apparatus as claimed in claim 1 or 7, characterized in that: two adjacent offsetting gravity mechanisms are arranged in a staggered mode.

9. A multilayer hot-pressing apparatus as claimed in claim 1, characterized in that: the top surface of every fly leaf has all been installed detection device, and detection device is used for detecting whether there is the material on hot pressing surface of hot pressing assembly down, and detection device is connected with the counteracting gravity mechanism electricity that corresponds.

10. A multi-layer hot press apparatus as claimed in claim 1, wherein: the two ends of the lower hot-pressing assembly are respectively provided with an insulating base plate, and the insulating base plates extend to the upper part of the hot-pressing surface of the lower hot-pressing assembly in a protruding manner; the two ends of the upper hot pressing assembly are elastically connected with a short circuit testing mechanism, and the short circuit testing mechanism is arranged corresponding to the insulating base plate.