CN211968771U - Thermal compounding device - Google Patents

Abstract

The utility model provides a thermal recombination device relates to lithium cell manufacturing technical field, and this thermal recombination device crosses the roller assembly including supporting wall frame, hot pressing band subassembly, hot pressing roller assembly and heating drive, the hot pressing band subassembly with the hot pressing roller assembly sets up along upper and lower direction relatively on the supporting wall frame, the hot pressing band subassembly with form the pressfitting passageway that supplies unit electricity core to pass through between the hot pressing roller assembly, just the hot pressing band subassembly with the hot pressing roller assembly pressfitting is in respectively the upper and lower both sides of unit electricity core, the heating drive crosses the roller assembly setting and is in the discharge side of pressfitting passageway is used for the thermal recombination unit electricity core. Compared with the prior art, the utility model provides a pair of unit electricity core conveyor, it can avoid using the wheat to draw the membrane, can guarantee simultaneously that the pole piece is stable not drunkenness in transportation process to need not additionally to set up wheat and draw membrane winding and unwinding equipment, reduced holistic occupation space and function cost.

Description

Thermal compounding device

Technical Field

The utility model relates to a lithium cell makes technical field, particularly, relates to a hot set composite.

Background

At present, unit cells formed by pole pieces and diaphragms are heated in a thermal compounding baking oven and then are subjected to hot-pressing compounding through a roller assembly in a thermal compounding stage, mylar films are adopted to clamp and transport in the compounding stage to protect the pole pieces and prevent the pole pieces from moving, namely mylar films are paved on the upper side and the lower side of the unit cells respectively, and the mylar films are taken down after the thermal compounding is finished.

Among the prior art, because lamination output is huge, lead to the mylar consumption volume sharply to increase, it is with high costs, change the mylar simultaneously and unreel the relevant equipment of rolling with the installation mylar, increased the human cost undoubtedly, also make the more complicated redundancy of whole equipment simultaneously, increased holistic occupation space, increased simultaneously and changed the machine and stopped the material time, mylar self is as the consumptive material in addition, and the cost is also higher.

In view of this, it is very important to design and manufacture a thermal compound device that can replace the mylar film, can ensure that the pole pieces are stable and do not move in the conveying process, does not need to additionally arrange mylar film winding and unwinding equipment, and reduces the overall occupied space and operation cost.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hot set composite can replace the mylar film, can guarantee that the pole piece is stable not drunkenness in transportation process simultaneously to need not additionally to set up mylar film and receive unwinding equipment, reduced holistic occupation space and function cost.

The utility model is realized by adopting the following technical scheme.

The utility model provides a thermal recombination device, includes supporting wall frame, hot pressing assembly of components, hot pressing roller assembly and heating drive cross the roller assembly, hot pressing roller assembly with hot pressing assembly of components sets up relatively along upper and lower direction on the supporting wall frame, hot pressing assembly of components with form the pressfitting passageway that supplies unit electricity core to pass through between the hot pressing assembly of components, just hot pressing roller assembly with hot pressing assembly of components pressfitting is in the upper and lower both sides of unit electricity core respectively, heating drive cross the roller assembly and set up the discharge side of pressfitting passageway for thermal recombination unit electricity core.

Further, the hot pressing roller subassembly includes a plurality of drive rollers, thermal-insulated box body, drive roller frame and a plurality of first heater, the drive roller frame sets up the bottom of thermal-insulated box body, and is a plurality of drive rollers interval just rotationally sets up on the drive roller frame, and is a plurality of the drive rollers with the hot pressing band subassembly sets up relatively and forms the pressfitting passageway, and is a plurality of first heater interval sets up in the thermal-insulated box body, and is a plurality of first heater and a plurality of the drive rollers set up in a staggered way to stretch into between two adjacent drive rollers.

Further, the hot pressing roller assembly further comprises a plurality of pressing structures, and the plurality of pressing structures are arranged on the heat insulation box body at intervals and connected with the transmission roller frame and used for providing downward elastic force for the transmission roller frame.

Furthermore, each compression structure comprises a linear bearing, a guide pressing shaft and an elastic part, the linear bearing is arranged on the heat insulation box body, the guide pressing shaft is movably arranged in the linear bearing and connected with the transmission roller frame, and the elastic part is respectively connected with the heat insulation box body and the transmission roller frame.

Furthermore, a first temperature measuring sensor is further arranged on the heat insulation box body, and the first temperature measuring sensor is electrically connected with the plurality of first heaters and used for detecting the temperature of the unit cell.

Further, the hot pressing belt assembly comprises a bearing frame, a driving roller, a driven roller, a steel belt and a second heater, the driving roller and the driven roller are respectively and rotatably arranged at two ends of the bearing frame, the steel belt is respectively wound on the driving roller and the driven roller, the upper side surface of the steel belt corresponds to the hot pressing roller assembly and forms the pressing channel, and the second heater is arranged on the bearing frame and is positioned below the steel belt of the pressing channel and used for heating the steel belt.

Furthermore, a second temperature measuring sensor is further arranged on the bearing frame and electrically connected with the second heater and used for detecting the temperature of the steel strip.

Further, be provided with along upper and lower direction interval on the support wall frame and take mounting bracket and roller mounting bracket, hot pressing band subassembly sets up take on the mounting bracket, be provided with the pressfitting driving piece on the roller mounting bracket, the pressfitting driving piece with hot pressing roller subassembly is connected for drive hot pressing roller subassembly is close to or keeps away from hot pressing band subassembly.

Furthermore, guide posts are further arranged on two sides of the hot pressing roller assembly, guide sleeves matched with the guide posts are further arranged on two sides of the hot pressing belt assembly, and the guide posts movably penetrate through the guide sleeves and are used for guiding the hot pressing roller assembly.

Further, the heating drive roller assembly comprises a rack, a first hot pressing roller and a second hot pressing roller, the first hot pressing roller and the second hot pressing roller are rotatably arranged on the rack, the first hot pressing roller and the second hot pressing roller are arranged at intervals to form a hot pressing channel, and the hot pressing channel corresponds to the pressing channel.

The utility model discloses following beneficial effect has:

the utility model provides a pair of thermal compound device, through with hot pressing band subassembly and hot pressing roller subassembly along upper and lower direction relative setting on the support wall frame, and form the pressfitting passageway between hot pressing band subassembly and the hot pressing roller subassembly, when pressfitting passageway conveying unit electricity core, hot pressing roller subassembly and hot pressing band subassembly pressfitting are in the upper and lower both sides of unit electricity core respectively to carry on spacingly from upper and lower both sides to unit electricity core, prevent that unit electricity core from taking place the drunkenness in transportation process, protected unit electricity core effectively. Compared with the prior art, the utility model provides a pair of unit electricity core conveyor, it can avoid using the wheat to draw the membrane, can guarantee simultaneously that the pole piece is stable not drunkenness in transportation process to need not additionally to set up wheat and draw membrane winding and unwinding equipment, reduced holistic occupation space and function cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a thermal compound device provided by the present invention at a first viewing angle;

fig. 2 is a schematic structural diagram of a thermal compound device provided by the present invention at a second viewing angle;

FIG. 3 is an enlarged partial view of III of FIG. 2;

FIG. 4 is a schematic view of the construction of the hot nip roll assembly of FIG. 2;

FIG. 5 is a schematic structural view of the compression structure of FIG. 4;

FIG. 6 is a schematic structural view of the hot belt assembly of FIG. 2;

FIG. 7 is a schematic view of a portion of the hot belt assembly of FIG. 2;

FIG. 8 is a schematic view of the structure of the heating driven roll assembly of FIG. 2.

Icon: 100-a thermal compounding device; 110-a supporting wall frame; 111-a belt mount; 113-a roller mounting frame; 115-pressing driving piece; 117-guide posts; 119-a guide sleeve; 130-a thermal compression belt assembly; 131-a carrier; 133-drive roll; 135-driven rolls; 137-steel strip; 150-hot press roll assembly; 151-driving rollers; 153-insulating box; 155-driving roll frame; 157-a first heater; 158-a first temperature sensor; 159-a compression structure; 1591-linear bearing; 1593-guiding the pressing shaft; 1595-elastic member; 170-heating the driven roller assembly; 171-a frame; 173-first hot press roll; 175-second heated press roll.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "vertical", "horizontal", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the products of the present invention are usually placed when in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Features in the embodiments described below may be combined with each other without conflict.

First embodiment

With reference to fig. 1 to 3, the present embodiment provides a thermal compound device 100, which can avoid using a mylar film, and meanwhile, can ensure that a pole piece is stable and does not move during a conveying process, so as to effectively protect the pole piece, and an additional mylar film winding and unwinding device is not required, so that the overall occupied space and the operation cost are reduced.

The thermal compound device 100 provided by this embodiment includes a supporting wall frame 110, a hot-pressing belt assembly 130, a hot-pressing roller assembly 150 and a heating driving roller assembly 170, the hot-pressing belt assembly 130 and the hot-pressing roller assembly 150 are oppositely disposed on the supporting wall frame 110 along the up-down direction, a press-fit channel for passing a unit cell is formed between the hot-pressing belt assembly 130 and the hot-pressing roller assembly 150, the hot-pressing belt assembly 130 and the hot-pressing roller assembly 150 are respectively pressed on the upper and lower sides of the unit cell, and the heating driving roller assembly 170 is disposed on the discharge side of the press-fit channel and is used for thermally compounding the unit.

In this embodiment, the hot-pressing strip assembly 130 and the hot-pressing roller assembly 150 both have a heating function, and both perform heating and baking processing on the unit cells in the pressing channel, and the heated unit cells are subjected to the pressing action of the heating driving roller assembly 170 to obtain high-precision pole pieces.

The thermal compound device 100 that this embodiment provided forms the pressfitting passageway through hot pressing band subassembly 130 and hot pressing roller subassembly 150 to replace the relevant structure of mylar film, avoided the expense that the consumptive material produced, at the thermal compound in-process, laminate the heating to unit electricity core with hot pressing band subassembly 130 and hot pressing roller subassembly 150, guaranteed that no relative drunkenness has between pole piece and the pole piece, pole piece and the diaphragm, the rethread heating drives the roller and obtains high accuracy unit electricity core finally. In addition, the occupied space of the equipment is saved, and the cost of the equipment is reduced.

The supporting wall frame 110 is provided with a belt mounting frame 111 and a roller mounting frame 113 at intervals in the vertical direction, the hot pressing belt assembly 130 is arranged on the belt mounting frame 111, the roller mounting frame 113 is provided with a pressing driving member 115, and the pressing driving member 115 is connected with the hot pressing roller assembly 150 and used for driving the hot pressing roller assembly 150 to approach or leave the hot pressing belt assembly 130.

In this embodiment, the pressing driving member 115 is a pressing cylinder, and a piston rod of the pressing cylinder is connected to the hot pressing roller assembly 150 for driving the hot pressing roller assembly 150 to ascend or descend. In addition, the pressing cylinder is installed on the roller mounting frame 113 in a vertical direction, and the roller mounting frame 113 is suspended above the hot press roller assembly 150 in a cantilever shape.

In this embodiment, guide posts 117 are further disposed on two sides of the hot pressing roller assembly 150, guide sleeves 119 matched with the guide posts 117 are further disposed on two sides of the hot pressing belt assembly 130, and the guide posts 117 are movably disposed through the guide sleeves 119 for guiding the hot pressing roller assembly 150. Specifically, the hot press roller assembly 150 can move up and down along the vertical direction through the cooperation of the guide columns 117 and the guide sleeves 119, and the movement precision is improved.

In other preferred embodiments of the present invention, the two sides of the hot pressing roller assembly 150 may also be provided with the guiding sleeves 119, the two sides of the hot pressing belt assembly 130 are provided with the guiding posts 117, and the guiding posts 117 cooperate with the guiding sleeves 119 to realize the guiding function.

Referring to fig. 4 and 5, the hot press roller assembly 150 includes a plurality of driving rollers 151, a heat insulation box body 153, a driving roller frame 155, a plurality of first heaters 157 and a plurality of pressing structures 159, the driving roller frame 155 is disposed at the bottom of the heat insulation box body 153, the plurality of driving rollers 151 are disposed at intervals on the driving roller frame 155, the plurality of driving rollers 151 and the hot press belt assembly 130 are disposed opposite to each other and form a pressing passage, the plurality of first heaters 157 are disposed at intervals in the heat insulation box body 153, and the plurality of first heaters 157 and the plurality of driving rollers 151 are disposed alternately and extend into a space between two adjacent driving rollers 151. A plurality of pressing structures 159 are spaced apart on the insulation case 153 and connected to the driving roller frame 155 for providing a downward elastic force to the driving roller frame 155.

In this embodiment, the transmission rollers 151 are free rollers, which roll under the driving of the unit cell, and the thermal compression belt assembly 130 is a driving part, which can drive the unit cell to move.

It should be noted that the heat insulation box 153 is formed by splicing a series of heat insulation boards and safety partition boards, and the first heater 157 is an infrared heater, and can heat the adjacent driving roller 151 and unit cells, thereby implementing a heating function.

Each of the pressing structures 159 includes a linear bearing 1591, a guide nip shaft 1593, and an elastic member 1595, the linear bearing 1591 is disposed on the insulation case 153, the guide nip shaft 1593 is movably disposed in the linear bearing 1591 and coupled to the driving roller housing 155, and the elastic member 1595 is coupled to the insulation case 153 and the driving roller housing 155, respectively. Specifically, the top end of the guide pressing shaft 1593 is provided with a limit cap, and the guide pressing shaft 1593 is prevented from coming off the linear bearing 1591 through the limit cap.

In this embodiment, the elastic member 1595 is a compression spring, and is respectively abutted against the heat insulation box 153 and the driving roller frame 155, the two ends of the driving roller frame 155 are provided with rotating brackets, the two ends of the driving roller 151 are respectively rotatably connected with the two driving brackets, and the plurality of driving rollers 151 are arranged along the same horizontal plane.

In this embodiment, the heat insulation box 153 is further provided with a first temperature sensor 158, and the first temperature sensor 158 is electrically connected to the plurality of first heaters 157 and is used for detecting the temperature of the unit cells. The first temperature sensor 158 is an infrared temperature sensor, and detects the surface temperature of the unit cell through the infrared temperature sensor, and reasonably adjusts the heating temperature of the first heater 157 according to the surface temperature of the unit cell, so as to adjust the edge temperature of the unit cell to the optimum temperature.

In this embodiment, the surface of the driving roller 151 is coated with a protective layer, specifically, the surface of the driving roller 151 is coated with a layer of teflon, and the teflon is used to stick the pole piece diaphragm, thereby increasing the wear resistance of the driving roller 151. Under the guidance of the linear bearing 1591, the driving roller 151 is pressed against the unit cells by the elastic force of the compression spring.

Referring to fig. 6, the hot press belt assembly 130 includes a carrier 131, a driving roller 133, a driven roller 135, a steel belt 137, and a second heater (not shown), the driving roller 133 and the driven roller 135 are rotatably disposed at both ends of the carrier 131, respectively, the steel belt 137 is wound around the driving roller 133 and the driven roller 135, respectively, an upper side surface of the steel belt 137 corresponds to the hot press roller assembly 150 and forms a nip passage, and the second heater is disposed on the carrier 131 below the nip passage for heating the steel belt 137. Specifically, the second heater is an infrared heater, which achieves a thermal recombination effect by heating the steel belt 137 and transferring heat to the unit cells through the steel belt 137.

In this embodiment, the driving roller 133 is in transmission connection with a driving motor, and the driving roller 133 drives the steel belt 137 to move under the driving of the driving motor, so as to realize the active movement of the steel belt 137.

In this embodiment, the steel belt 137 has the characteristics of good surface quality, high dimensional accuracy and the like, so that the steel belt 137 can ensure that the pole piece and the diaphragm do not move relatively. And a protective layer is also plated on the surface of the steel belt 137, specifically, a layer of teflon is plated on the surface of the steel belt 137, and the pole piece diaphragm is prevented from being stuck by the teflon, so that the wear resistance of the steel belt 137 is improved.

In this embodiment, the carriage 131 is further provided with a second temperature sensor (not shown), and the second temperature sensor is electrically connected to the second heater for detecting the temperature of the steel belt 137. Specifically, the second side temperature sensor is a film temperature sensor, and detects the temperature of the steel belt 137 through the film temperature sensor, so that the temperature of the unit cell is indirectly measured, and the heating temperature of the second heater is reasonably adjusted through the temperature of the steel belt 137.

Referring to fig. 7, the steel belt 137 is provided with openings at intervals for guiding the steel belt 137 and preventing slipping, and the corresponding steel rollers are matched with the steel belt 137 in a manner of embedding balls or other processes to play a role in preventing deviation and slipping, so that the cell units after hot pressing are qualified.

Referring to fig. 8, the heating driven roller assembly 170 includes a frame 171, a first hot pressing roller 173 and a second hot pressing roller 175, the first hot pressing roller 173 and the second hot pressing roller 175 are rotatably disposed on the frame 171, and the first hot pressing roller 173 and the second hot pressing roller 175 are disposed at intervals and form a hot pressing channel, which corresponds to the pressing channel.

In this embodiment, the unit cells are rolled by the first and second hot press rollers 173 and 175, and the finished unit cells enter the next process.

The thermal compound device 100 provided in this embodiment operates according to the following principle: after the pressing cylinder presses down the steel roller hot-pressing assembly, the unit cell materials enter between the hot-pressing belt assembly 130 and the hot-pressing roller assembly 150 through the feeding roller, at the moment, the steel belt 137 rotates clockwise, the unit cell materials entering the cavity are tightly clamped for heating and baking, the unit cell materials enter the heating driving roller assembly 170 for rolling after being conveyed for a certain distance, and the unit cell materials enter the next procedure after the rolling is completed.

In summary, the thermal compound device 100 provided by this embodiment sets up the hot pressing band assembly 130 and the hot pressing roller assembly 150 on the supporting wall frame along the up-down direction relatively, and forms the pressing channel between the hot pressing band assembly 130 and the hot pressing roller assembly 150, when the unit electric core is conveyed through the pressing channel, the hot pressing band assembly 130 and the hot pressing roller assembly 150 are respectively pressed on the upper and lower sides of the unit electric core, thereby limiting the unit electric core from the upper and lower sides, preventing the unit electric core from shifting in the conveying process, and effectively protecting the unit electric core. Compared with the prior art, the unit cell conveying device provided by the embodiment can avoid using a mylar film, can ensure that a pole piece is stable and does not move in the conveying process, does not need to additionally arrange mylar film winding and unwinding equipment, and reduces the whole occupied space and the operation cost.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The thermal compounding device is characterized by comprising a supporting wall frame, a hot pressing strip assembly and a heating driving strip assembly, wherein the hot pressing strip assembly and the hot pressing strip assembly are oppositely arranged on the supporting wall frame along the vertical direction, a press-fit channel for unit battery cells to pass through is formed between the hot pressing strip assembly and the hot pressing strip assembly, the hot pressing strip assembly and the hot pressing strip assembly are respectively used for being pressed on the upper side and the lower side of the unit battery cells, and the heating driving strip assembly is arranged on the discharge side of the press-fit channel and used for thermal compounding the unit battery cells.

2. The thermal compounding device of claim 1, wherein the hot press roller assembly comprises a plurality of driving rollers, a heat insulation box, a driving roller frame, and a plurality of first heaters, the driving roller frame is disposed at a bottom of the heat insulation box, the plurality of driving rollers are spaced apart from each other and rotatably disposed on the driving roller frame, the plurality of driving rollers are disposed opposite to the hot press belt assembly and form the press-fit passage, the plurality of first heaters are spaced apart from each other within the heat insulation box, and the plurality of first heaters are staggered from the plurality of driving rollers and extend into a space between two adjacent driving rollers.

3. The thermal compounding device of claim 2, wherein the hot press roll assembly further comprises a plurality of compacting structures spaced apart on the insulated box and coupled to the drive roll housing for providing a downward compacting force to the drive roll housing.

4. The thermal compounding device of claim 3, wherein each of the compression structures comprises a linear bearing, a guiding pressing shaft and an elastic member, the linear bearing is disposed on the heat insulation box body, the guiding pressing shaft is movably disposed in the linear bearing and connected to the transmission roller frame, and the elastic member is respectively connected to the heat insulation box body and the transmission roller frame.

5. The thermal compounding device according to claim 2, wherein a first temperature sensor is further disposed on the thermal insulation box body, and the first temperature sensor is electrically connected to the plurality of first heaters and is configured to detect the temperature of the unit cells.

6. The thermal compounding device of claim 1, wherein the hot pressing belt assembly comprises a bearing frame, a driving roller, a driven roller, a steel belt and a second heater, the driving roller and the driven roller are respectively rotatably disposed at two ends of the bearing frame, the steel belt is respectively wound around the driving roller and the driven roller, an upper side surface of the steel belt corresponds to the hot pressing roller assembly and forms the pressing channel, and the second heater is disposed on the bearing frame and below the pressing channel and is used for heating the steel belt.

7. The thermal compounding device of claim 6, wherein a second temperature sensor is further disposed on the carrier and electrically connected to the second heater for detecting the temperature of the steel strip.

8. The thermal compounding device of claim 1, wherein the support wall frame is provided with a belt mounting frame and a roller mounting frame at intervals in an up-down direction, the hot pressing belt assembly is disposed on the belt mounting frame, and the roller mounting frame is provided with a pressing driving member connected to the hot pressing roller assembly for driving the hot pressing roller assembly to approach or depart from the hot pressing belt assembly.

9. The thermal compounding device of claim 8, wherein guide posts are further disposed on two sides of the hot press roller assembly, guide sleeves engaged with the guide posts are further disposed on two sides of the hot press roller assembly, and the guide posts are movably disposed through the guide sleeves for guiding the hot press roller assembly.

10. The thermal compounding device of claim 1, wherein the heating driven roller assembly comprises a frame, a first hot pressing roller and a second hot pressing roller, the first hot pressing roller and the second hot pressing roller are rotatably disposed on the frame, and the first hot pressing roller and the second hot pressing roller are spaced apart from each other to form a hot pressing channel, and the hot pressing channel corresponds to the pressing channel.

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