CN219106233U - Hot press device and battery production equipment - Google Patents

Abstract

The utility model provides a hot press device and battery production equipment, which belongs to the technical field of battery manufacturing, and comprises the following components: a lower hot pressing structure; the upper hot pressing structure is arranged opposite to the lower hot pressing structure, and the lower hot pressing structure and the upper hot pressing structure can move relatively along the vertical direction; the bearing mechanism comprises a bearing film positioned between the lower hot-pressing structure and the upper hot-pressing structure; the supporting mechanism is movably arranged below the supporting film, and is provided with a material receiving position for driving the supporting film to synchronously move upwards to a battery cell receiving position, a separating position for driving the supporting film to recover to the horizontal state and separate from the contact with the supporting film, and an avoidance position for moving out between the lower hot pressing structure and the upper hot pressing structure. According to the hot pressing device, the hot pressing structure is of an integrated structure, the surface of the lower hot pressing structure has higher flatness, the uniformity of the surface temperature of the lower hot pressing structure is guaranteed, and the loading and unloading of the battery cells are facilitated through the cooperation of the bearing film and the supporting mechanism, so that the production progress is guaranteed.

Description

Hot press device and battery production equipment

Technical Field

The utility model relates to the technical field of battery manufacturing, in particular to a hot pressing device and battery production equipment.

Background

In the production process of lithium ion batteries, a hot pressing device is generally required to be used for hot pressing the battery cell, so that the connectivity of a diaphragm and a pole piece of the battery cell is ensured. In the prior art, a manipulator is generally used for clamping a battery cell and carrying the battery cell to the middle positions of an upper hot pressing plate and a lower hot pressing plate of a hot pressing device, then the manipulator is removed, the battery cell freely falls onto the lower hot pressing plate under the action of gravity, the dislocation of a positive plate and a negative plate of the battery cell is easily caused in the process of free falling, the production quality of the battery cell is affected, and the safety problem is easily caused.

Chinese patent document CN210074054U discloses a hot press device, in which a moving part is provided in the middle of a lower hot press plate, and a battery cell is picked up by the moving part moving up and down and is placed on the lower hot press plate. However, due to the existence of the moving part, the lower hot-pressing plate is arranged in a blocking manner, the thermal resistance between the moving part and the rest part of the lower hot-pressing plate is larger, and if the matching precision between the moving part and the fixing part is poor, the flatness of the lower hot-pressing surface formed by the moving part and the fixing part is poor, so that the uniformity of the surface temperature of the lower hot-pressing plate is influenced, and the hot-pressing effect is influenced.

The patent document also provides another hot pressing apparatus, in which a lower hot pressing plate is provided as an integral structure, and a flexible support film is used to take the battery cell from the handling device and then place the battery cell on the lower hot pressing plate. However, in the process of feeding or discharging, the handling equipment is not easy to place or take down the battery cells, and the production progress is delayed.

Disclosure of Invention

Therefore, the utility model aims to overcome the defects that the hot pressing effect is affected due to uneven temperature when a hot pressing device in the prior art is used for hot pressing, and further provides the hot pressing device and the battery production equipment.

In order to solve the above problems, the present utility model provides a hot press apparatus comprising: a lower hot pressing structure; the upper hot pressing structure is arranged opposite to the lower hot pressing structure, and the lower hot pressing structure and the upper hot pressing structure can move relatively along the vertical direction; the bearing mechanism comprises a bearing film positioned between the lower hot-pressing structure and the upper hot-pressing structure; the supporting mechanism is movably arranged below the supporting film, and is provided with a material receiving position for driving the supporting film to synchronously move upwards to a material receiving electric core, a separating position for driving the supporting film to recover to the horizontal state and separate from the contact of the supporting film, and an avoidance position for moving out between the lower hot pressing structure and the upper hot pressing structure.

Optionally, the supporting mechanism further comprises a tension adjusting structure, the tension adjusting structure is connected with the supporting film, and the tension adjusting structure is suitable for adjusting the tensioning degree of the supporting film so as to enable the supporting film to be in a loose state or a tight state.

Optionally, the tension adjusting structure comprises a telescopic driving part and a connecting part, the connecting part is connected with the driving end of the telescopic driving part, and the side edge of the bearing film is connected with the upper end of the connecting part.

Optionally, the telescopic driving part is an air cylinder, the air cylinder is connected with an air source through a first air channel and a second air channel respectively, a valve body is arranged between the air source and the first air channel and between the air source and the second air channel, the valve body is selectively communicated with the first air channel and the second air channel, and the first air channel and the second air channel are suitable for inputting different ventilation pressures to the air cylinder; or, tension adjusting structure still includes the elastic component, the one end of elastic component with connecting portion are connected, the other end of elastic component is fixed to be set up flexible drive portion with under the combined action of elastic component, the bearing membrane is in the state of tightening under the elasticity effect of elastic component, the bearing membrane is in the relaxation state.

Optionally, the tension adjusting structure is provided with a plurality of, and a plurality of tension adjusting structures are arranged along the circumference interval of the bearing film.

Optionally, the supporting mechanism comprises a moving driving structure, a lifting driving structure and a supporting part, wherein the supporting part is connected with the driving end of the lifting driving structure, and the moving driving structure is suitable for driving the lifting driving structure and the supporting part to synchronously move.

Optionally, the moving driving structure is a linear driving structure, and the moving driving structure can drive the lifting driving structure to linearly move and drive the supporting part to linearly move in a reciprocating manner at the separation position and the avoidance position; or, the movable driving structure is a rotary driving structure, and the movable driving structure can drive the lifting driving structure to rotate and move and drive the supporting part to swing reciprocally at the separation position and the avoidance position.

Optionally, two moving driving structures are arranged on two opposite sides of the lower hot pressing structure, two lifting driving structures are also arranged, and the two lifting driving structures are respectively arranged corresponding to the two moving driving structures; the movable driving structure is a linear driving structure, one supporting part is arranged, and one supporting part is simultaneously connected with the driving ends of the two lifting driving structures; or the movable driving structure is a linear driving structure or a rotary driving structure, two supporting parts are arranged, and the two supporting parts are respectively and correspondingly connected with the two lifting driving structures.

Optionally, a lower clearance step is arranged on at least one side of the lower hot pressing structure along the driving direction of the moving driving structure; and an upper clearance step is arranged on at least one side of the upper hot pressing structure along the driving direction of the movable driving structure.

Optionally, the side wall and the bottom wall of the lower clearance step are both provided with heat insulation structures; and the side wall and the bottom wall of the upper clearance step are both provided with heat insulation structures.

The utility model also provides battery production equipment comprising the hot pressing device.

The utility model has the following advantages:

1. according to the hot pressing device provided by the utility model, the supporting mechanism drives the supporting film to rise together to receive the battery core from the material receiving position, the supporting film is in a loose state, after the material receiving is finished, the supporting mechanism and the supporting film can drive the battery core to fall together, when the supporting film is in a horizontal position, the supporting film is in a tight state, the supporting film is used for supporting the battery core, the supporting mechanism can continuously descend and separate from the supporting film, the supporting mechanism can be moved out from between the supporting film and the lower hot pressing structure, then the upper hot pressing structure can press the battery core and the supporting film on the lower hot pressing structure to carry out hot pressing, and at the moment, the supporting film is in a loose state. Therefore, the lower hot pressing structure can be arranged into an integrated structure, so that the high surface flatness of the lower hot pressing structure and the uniformity of the surface temperature of the lower hot pressing structure are ensured, the hot pressing effect and the quality of the battery cell are improved, and the battery cell is convenient to feed and discharge through the cooperation of the bearing film and the supporting mechanism, so that the production progress is ensured.

2. According to the hot pressing device provided by the utility model, the tension adjusting structure is utilized to adjust the tension degree of the bearing film, so that the tension degree of the bearing film can be matched with the upward protruding state, the horizontal state and the downward sinking state of the bearing film, the resistance of the supporting mechanism in the lifting process can be reduced, and the service life of the bearing film can be prolonged.

3. According to the hot pressing device provided by the utility model, the air source can be communicated with the air cylinder through the first air passage or the second air passage by controlling the valve body, so that the input pressure of the air cylinder can be conveniently and rapidly changed, and the tensioning degree of the bearing film can be conveniently adjusted.

4. According to the hot pressing device provided by the utility model, the two supporting parts are respectively connected with the driving ends of the two lifting driving structures, so that the stability of the feeding and discharging processes of the battery core is ensured, and meanwhile, the working efficiency of the supporting mechanism is improved.

5. According to the hot pressing device provided by the utility model, the lower clearance step and the upper clearance step are arranged, so that the moving distance of the supporting part from the separation position to the avoidance position is reduced, and the processing efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view showing a hot press apparatus according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a conveying mechanism according to an embodiment of the present utility model when conveying a battery cell to a receiving position;

fig. 3 is a schematic structural view of a supporting mechanism provided in an embodiment of the present utility model in a receiving position;

FIG. 4 is a schematic view showing the structure of the support mechanism according to the embodiment of the present utility model in the separated position;

FIG. 5 shows a schematic view of a support mechanism according to an embodiment of the present utility model in an avoidance position;

FIG. 6 is a schematic view showing the structure of a lower press structure according to an embodiment of the present utility model;

FIG. 7 is a schematic view showing the structure of the upper press structure according to the embodiment of the present utility model;

fig. 8 is a schematic structural diagram of a clamping structure for clamping a battery cell according to an embodiment of the present utility model;

fig. 9 shows a schematic diagram of air path connection of a telescopic driving part according to an embodiment of the present utility model;

fig. 10 shows a schematic structural view of an alternative implementation of the tensioning adjustment structure provided by an embodiment of the present utility model.

Reference numerals illustrate:

10. a lower hot pressing structure; 11. a lower clearance step; 12. a lower hot pressing plate; 13. a lower heating rod; 20. a hot pressing structure is arranged; 21. an upper clearance step; 22. an upper hot pressing plate; 23. a heating rod is arranged on the upper part; 30. a conveying mechanism; 31. a clamping structure; 311. an upper clamping part; 312. a lower clamping part; 40. a support mechanism; 41. a movement driving structure; 42. a lifting driving structure; 43. a support part; 50. a bearing mechanism; 51. a support membrane; 52. a tension adjusting structure; 521. a telescopic driving part; 522. a connection part; 523. a first air path; 524. a second air path; 525. a gas source; 526. a valve body; 527. an elastic member; 528. a guide post; 60. a bottom plate; 61. a fixed block; 70. a heat insulating plate; 80. a guide rail; 90. a slide block; 100. and a battery cell.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

One embodiment of the hot press apparatus as shown in fig. 1 to 10 includes: the device comprises a lower hot pressing structure 10, an upper hot pressing structure 20, a bearing mechanism 50 and a supporting mechanism 40. The upper hot pressing structure 20 and the lower hot pressing structure 10 are disposed opposite to each other, and the upper hot pressing structure 20 is disposed movably in a vertical direction. The support mechanism 50 includes a support film 51 positioned between the lower press 10 and the upper press 20. The support mechanism 40 can be moved in a vertical direction or in a horizontal direction on the underside of the support film 51. The supporting mechanism 40 has a material receiving position for driving the supporting film 51 to synchronously move upwards to the material receiving position for receiving the battery cell 100, a separating position for driving the supporting film 51 to recover to a horizontal state and separate from contact with the supporting film 51, and an avoidance position for moving out between the lower hot pressing structure 10 and the upper hot pressing structure 20.

It should be noted that, referring to fig. 2, the position of the battery cell 100 is the receiving position of the battery cell 100, so the battery cell 100 can be transported to the receiving position by using the transporting mechanism 30, and then the battery cell 100 can be received by using the supporting film 51 and the supporting mechanism 40.

The support mechanism 40 can move in the horizontal direction, including linear movement in the horizontal plane and rotational movement in the horizontal plane.

The supporting mechanism 40 drives the supporting film 51 to ascend together to receive the battery cell 100 from the receiving position, the supporting film 51 is in a loose state, the conveying mechanism 30 is evacuated and then receives the materials, the supporting mechanism 40 and the supporting film 51 can drive the battery cell 100 to descend together, when the supporting film 51 recovers to a horizontal position, the supporting film 51 is in a tight state, the supporting film 51 is used for supporting the battery cell 100, the supporting mechanism 40 can descend continuously to be separated from the supporting film 51, the supporting mechanism 40 can be moved out from between the supporting film 51 and the lower hot pressing structure 10, then the upper hot pressing structure 20 can press the battery cell 100 and the supporting film 51 on the lower hot pressing structure 10 to carry out hot pressing, and at the moment, the supporting film 51 is in a loose state. Therefore, the lower hot pressing structure 10 can be set to an integrated structure, which ensures the uniformity of the surface flatness and the surface temperature of the lower hot pressing structure 10, and the loading and unloading of the battery cell 100 are facilitated by the cooperation of the bearing film 51 and the supporting mechanism 40, so as to ensure the production progress.

As shown in fig. 1 to 5, the support mechanism 50 further includes a tension adjusting structure 52, wherein the tension adjusting structure 52 is connected to the support membrane 51, and the tension adjusting structure 52 is adapted to adjust the tension of the support membrane 51 so as to make the support membrane 51 in a loose state or a tight state.

It should be noted that, when the supporting mechanism 40 is in the material receiving position and the avoiding position, the supporting film 51 is in a loose state; when the support mechanism 40 is in the separated position, the support membrane 51 is in a taut condition.

The tensioning degree of the supporting film 51 is adjusted by the tension adjusting structure 52, so that the tensioning degree of the supporting film 51 can be matched with the upward protruding state, the horizontal state and the downward sinking state of the supporting film 51, the resistance of the supporting mechanism 40 in the lifting process can be reduced, and the service life of the supporting film 51 can be prolonged.

In this embodiment, as shown in fig. 1 to 5, the tension adjusting structure 52 includes a telescopic driving portion 521 and a connecting portion 522, the connecting portion 522 is connected to the driving end of the telescopic driving portion 521, and the side edge of the support film 51 is connected to the upper end of the connecting portion 522. By adjusting the projecting amount of the expansion/contraction driving portion 521, the degree of tension of the support film 51 can be adjusted.

In this embodiment, as shown in fig. 9, the telescopic driving part 521 is a cylinder, the cylinder is connected with the air source 525 through the first air channel 523 and the second air channel 524, and the valve body 526 is disposed between the air source 525 and the first air channel 523 and the second air channel 524, the valve body 526 is selectively communicated with the first air channel 523 and the second air channel 524, and the first air channel 523 and the second air channel 524 are adapted to input different ventilation pressures to the cylinder.

The air source 525 can be communicated with the air cylinder through the first air passage 523 or the second air passage 524 by controlling the valve body 526, so that the input pressure of the air cylinder can be conveniently and rapidly changed, and the tensioning degree of the bearing film 51 can be conveniently adjusted.

In this embodiment, as shown in fig. 9, the valve body 526 is a three-position five-way solenoid valve, and the communication air path of the air source 525 can be switched by switching the working position of the solenoid valve.

In this embodiment, as shown in fig. 9, a pressure regulating valve is disposed on the second air path 524 in a communicating manner, and the ventilation pressure of the second air path 524 can be regulated by the pressure regulating valve. In the present embodiment, the ventilation pressure of the second air passage 524 is adjusted to be smaller than the ventilation pressure of the first air passage 523 by the pressure regulating valve.

As an alternative embodiment, as shown in fig. 10, the tension adjusting structure 52 further includes an elastic member 527, one end of the elastic member 527 is connected to the connecting portion 522, and the other end of the elastic member 527 is located at one side of the cylinder body of the cylinder and fixedly disposed. When the support film 51 is required to be in a tight state, the connecting part 522 is pushed outwards under the driving of the air cylinder, and under the combined action of the air cylinder and the elastic piece 527, the connecting part 522 receives larger pushing force so as to tighten the support film 51; when the support membrane 51 needs to be in a relaxed state, the air cylinder is not used, and during the upward movement of the support membrane 51, the connecting part 522 is pulled to move inwards and compress the elastic piece 527, and the connecting part 522 receives smaller thrust under the action of the elastic piece 527, so that the support membrane 51 is in a relaxed state.

As shown in fig. 1 to 5, the tension adjusting structures 52 are provided in a plurality, and the tension adjusting structures 52 are provided at intervals along the circumferential direction of the support film 51. Specifically, as shown in fig. 1 to 5, two tension adjusting structures 52 are provided, and the two tension adjusting structures 52 are separately provided on both sides of the support film 51.

Of course, one side of the support film 51 may be fixedly disposed, and only the other side of the support film 51 is provided with the tension adjusting structure 52. More, for example, four, tension adjusting structures 52 may be provided, and four tension adjusting structures 52 are provided on four sides of the support film 51.

As shown in fig. 1 to 5, the support mechanism 40 includes a movement driving structure 41, a lifting driving structure 42, and a support portion 43, the support portion 43 is connected to the driving end of the lifting driving structure 42, and the movement driving structure 41 is adapted to drive the lifting driving structure 42 and the support portion 43 to move synchronously.

As shown in fig. 3, the support film 51 is in a relaxed state, and the supporting portion 43 is located at the receiving position; as shown in fig. 4, the support film 51 is in a stretched state, and the support portion 43 is located at the separation position; as shown in fig. 5, the support film 51 is in a relaxed state, and the support 43 is in the retracted position.

In the present embodiment, as shown in fig. 1 to 5, the moving driving structure 41 is a linear driving structure, and the moving driving structure 41 can drive the lifting driving structure 42 to linearly move and drive the supporting portion 43 to linearly reciprocate between the separation position and the avoidance position. Specifically, as shown in fig. 1, two moving driving structures 41 are provided, two moving driving structures 41 are separately provided on two opposite sides of the lower hot pressing structure 10, two lifting driving structures 42 are also provided, two lifting driving structures 42 are respectively and correspondingly provided with the two moving driving structures 41, one supporting portion 43 is provided, and two ends of one supporting portion 43 are simultaneously connected with driving ends of the two lifting driving structures 42. As shown in fig. 2 to 5, the driving direction of the movement driving structure 41 is the left-right direction shown in fig. 2 to 5, that is, the escape position of the supporting portion 43 is located on the left or right side of the separation position.

Of course, two supporting portions 43 may be provided, and the two supporting portions 43 are respectively connected to the driving ends of the two lifting driving structures 42. At this time, the driving direction of the movement driving structure 41 may be the front-rear direction (direction perpendicular to the drawing plane) shown in fig. 2 to 5, and therefore, the escape position of the supporting portion 43 is located on the front side or the rear side of the separation position. That is, when the supporting mechanism 40 is in the process of receiving materials, the two supporting portions 43 can be abutted, so as to ensure stable supporting of the battery cell 100, and when the supporting mechanism 40 is avoided, the two supporting portions 43 can be quickly moved out, so that the working efficiency of the supporting mechanism 40 is improved.

In the present embodiment, the movement driving structure 41 and the elevation driving structure 42 are both cylinders.

It should be noted that, in other alternative embodiments, the moving driving structure 41 may also be a rotating driving structure, where the moving driving structure 41 can drive the lifting driving structure 42 to rotate and swing the supporting portion 43 reciprocally between the separating position and the avoiding position.

The separation position and the escape position are located in the same horizontal plane, and the support portion 43 can be driven to reciprocate in the horizontal plane by the movement driving structure 41 (rotation driving structure).

In the present embodiment, the support portion 43 is a support plate.

In this embodiment, as shown in fig. 1 to 5, the hot press apparatus further includes a base plate 60, and the lower hot press structure 10 is connected to the base plate 60 through a heat insulating plate 70.

In the present embodiment, as shown in fig. 1, a guide rail 80 is provided on the base plate 60, and the guide rail 80 is provided along the driving direction of the movement driving structure 41. The bottom of the lifting driving structure 42 is provided with a sliding block 90, the sliding block 90 is slidably connected with the guide rail 80, and the driving end of the moving driving structure 41 is connected with the sliding block 90.

It should be noted that, referring to fig. 10, a fixing block 61 is disposed on the bottom plate 60, the elastic member 527 is a spring, a guide post 528 is inserted into the spring, one end of the guide post 528 is fixedly connected to the connecting portion 522, and the other end of the guide post 528 is slidably connected to the fixing block 61 through a linear bearing.

As shown in fig. 6, the lower hot pressing structure 10 includes a lower hot pressing plate 12 and a lower heating rod 13, wherein a lower insertion hole is formed in the lower hot pressing plate 12, and the lower heating rod 13 is inserted into the lower insertion hole. As shown in fig. 7, the upper hot pressing structure 20 includes an upper hot pressing plate 22 and an upper heating rod 23, an upper insertion hole is formed in the upper hot pressing plate 22, and the upper heating rod 23 is inserted into the upper insertion hole.

In the present embodiment, as shown in fig. 6, the lower hot press plate 12 is provided with lower clearance steps 11 on both sides in the driving direction of the movement driving structure 41; as shown in fig. 7, the upper thermocompression bonding plate 22 is provided with upper clearance steps 21 on both sides in the driving direction of the movement driving structure 41. By providing the lower clearance step 11 and the upper clearance step 21, the moving distance of the supporting portion 43 from the separation position to the avoidance position is reduced, and the processing efficiency is improved.

It should be noted that referring to fig. 2 to 5, the left and right sides of the lower hot platen 12 and the upper hot platen 22 are provided with clearance steps.

Of course, referring to fig. 5, since the escape position of the supporting portion 43 is located at the left side of the separation position, the lower step 11 may be provided only at the left side of the lower hot plate 12, and the upper step 21 may be provided only at the left side of the upper hot plate 22. Therefore, the interference of the lower platen 12 and the upper platen 22 with the supporting portion 43 can be avoided.

In this embodiment, the side wall and the bottom wall of the lower clearance step 11 are both provided with insulation structures, and the side wall and the bottom wall of the upper clearance step 21 are both provided with insulation structures, so that the heat dissipation of the lower hot pressing structure 10 and the upper hot pressing structure 20 can be reduced, and the heating effect is ensured.

It should be noted that, the heat insulation structure may be disposed on the rest of the lower hot pressing structure 10 except the lower hot pressing surface and the rest of the upper hot pressing structure 20 except the upper hot pressing surface.

In this embodiment, the support film 51 is an anti-adhesive film.

The embodiment also provides a specific implementation mode of the battery production equipment, which comprises the hot pressing device. The hot pressing device is used for hot pressing the battery cell 100 in the battery production process, so that the uniformity of the surface temperature of the lower hot pressing structure 10 can be ensured, the hot pressing effect is improved, and the battery cell is convenient to feed and discharge.

In the present embodiment, as shown in fig. 2 and 3, the battery production apparatus further includes a conveying mechanism 30, the conveying mechanism 30 including a holding structure 31, the holding structure 31 being openably and closably provided in the vertical direction. Specifically, as shown in fig. 8, the clamping structure 31 includes an upper clamping portion 311 and a lower clamping portion 312, and the upper clamping portion 311 and the lower clamping portion 312 are adapted to clamp the battery cell 100 therebetween. As shown in fig. 2 and 3, when the conveying mechanism 30 conveys the battery cell 100 to the receiving position, the upper clamping portion 311 moves upward away from the battery cell 100 to cancel the clamping of the battery cell 100, and as shown in fig. 3, when the supporting mechanism 40 is in the receiving position, the supporting mechanism 40 can jack up the battery cell 100 upward to separate the lower surface of the battery cell 100 from the lower clamping portion 312, and then the clamping structure 31 can be removed. Therefore, the clamping structure 31 will not interfere with the battery cell 100 during the evacuation process, so as to ensure the stability of the battery cell 100.

It is worth mentioning that the transport mechanism 30 further comprises a driving structure for driving the gripping structure 31.

The conveying mechanism 30 may be configured as a robot.

In using the thermo-compression device of the present embodiment, first, as shown in fig. 2, the battery cell 100 is transported to the junction level between the lower thermo-compression structure 10 and the upper thermo-compression structure 20 by the transport mechanism 30, and the supporting portion 43 is moved to the separation position by the moving driving structure 41 and the lifting driving structure 42; then, as shown in fig. 3, the upper clamping portion 311 moves upwards to cancel the clamping of the battery cell 100, the lifting driving structure 42 drives the supporting portion 43 to move upwards, so that the supporting portion 43 lifts up the supporting film 51 and the battery cell 100, the battery cell 100 is located between the upper clamping portion 311 and the lower clamping portion 312, the clamping structure 31 can be evacuated, and at this time, the air source 525 is communicated with the telescopic driving portion 521 through the second air channel 524; then, as shown in fig. 4, the lifting driving structure 42 drives the supporting portion 43 to move downward, so that the supporting film 51 and the battery cell 100 move downward together until the supporting film 51 is horizontal, at this time, the air source 525 is communicated with the telescopic driving portion 521 through the first air passage 523, and the lifting driving structure 42 continues to drive the supporting portion 43 to move downward to the separating position; finally, as shown in fig. 5, the moving driving structure 41 drives the lifting driving structure 42 and the supporting portion 43 to move leftward synchronously, so that the supporting portion 43 moves to the avoiding position, the upper thermo-compression structure 20 can move downward, and the upper thermo-compression structure 20 presses the battery cell 100 and the supporting film 51 onto the lower thermo-compression structure 10 for thermo-compression, and at this time, the air source 525 is communicated with the telescopic driving portion 521 through the second air path 524.

When the hot pressing is completed, firstly, the upper hot pressing structure 20 moves away from the lower hot pressing structure 10, the communication air passage of the air source 525 is switched to the first air passage 523, the extension amount of the telescopic driving part 521 is increased to tension the supporting film 51, the supporting film 51 is restored to the horizontal position, and the battery cell 100 is supported; then, the movement driving structure 41 drives the lifting driving structure 42 and the supporting portion 43 to move from the avoidance position to the separation position; afterwards, the lifting driving structure 42 drives the supporting part 43 to move upwards, so that the supporting film 51 and the battery cell 100 are jacked up, the battery cell 100 is moved to the position of the receiving position, and at the moment, the air source 525 is communicated with the telescopic driving part 521 through the second air channel 524; finally, the cells 100 are gripped at the receiving location by the conveyor 30 and the cells 100 are removed.

According to the above description, the present patent application has the following advantages:

1. the lower hot pressing plate is of an integrated structure, so that the flatness of the surface of the lower hot pressing plate can be ensured, and the uniformity of the surface temperature of the lower hot pressing plate can be ensured;

2. through the cooperation of the bearing film and the supporting mechanism, the feeding and discharging of the battery cell are facilitated, and the production progress is ensured;

3. can adjust the rate of tension of bearing membrane to with each state looks adaptation of bearing membrane.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (11)

1. A hot press apparatus, comprising:

a lower hot-pressing structure (10);

the upper hot pressing structure (20) is arranged opposite to the lower hot pressing structure (10), and the lower hot pressing structure (10) and the upper hot pressing structure (20) can move relatively along the vertical direction;

a support mechanism (50) comprising a support membrane (51) located between the lower hot press structure (10) and the upper hot press structure (20);

the supporting mechanism (40) is movably arranged below the supporting film (51), the supporting mechanism (40) is provided with a material receiving position for driving the supporting film (51) to synchronously move upwards to a battery cell (100), and a separating position for driving the supporting film (51) to recover to the horizontal state and separate from the contact with the supporting film (51), and the supporting mechanism is also provided with an avoidance position for moving out between the lower hot pressing structure (10) and the upper hot pressing structure (20).

2. The hot press according to claim 1, wherein the support mechanism (50) further comprises a tension adjustment structure (52), the tension adjustment structure (52) being connected to the support membrane (51), the tension adjustment structure (52) being adapted to adjust the degree of tension of the support membrane (51) such that the support membrane (51) is in a relaxed state or in a taut state.

3. The hot press apparatus according to claim 2, wherein the tension adjusting structure (52) includes a telescopic driving part (521) and a connecting part (522), the connecting part (522) is connected to the driving end of the telescopic driving part (521), and the side edge of the support film (51) is connected to the upper end of the connecting part (522).

4. A hot press according to claim 3, wherein the telescopic drive (521) is a cylinder connected to a gas source (525) via a first gas path (523) and a second gas path (524), respectively, and a valve body (526) is arranged between the gas source (525) and the first gas path (523) and the second gas path (524), the valve body (526) being selectively in communication with the first gas path (523) and the second gas path (524), the first gas path (523) and the second gas path (524) being adapted to input different ventilation pressures to the cylinder; or alternatively, the method can be used for processing,

the tension adjusting structure (52) further comprises an elastic piece (527), one end of the elastic piece (527) is connected with the connecting portion (522), the other end of the elastic piece (527) is fixedly arranged, the supporting film (51) is in a tightening state under the combined action of the telescopic driving portion (521) and the elastic piece (527), and the supporting film (51) is in a loosening state under the elastic action of the elastic piece (527).

5. The hot press according to any one of claims 2 to 4, wherein a plurality of the tension adjusting structures (52) are provided, and a plurality of the tension adjusting structures (52) are provided at intervals along the circumferential direction of the support film (51).

6. The hot press according to any one of claims 1-4, wherein the support mechanism (40) comprises a movement driving structure (41), a lifting driving structure (42) and a support portion (43), the support portion (43) being connected to the driving end of the lifting driving structure (42), the movement driving structure (41) being adapted to drive the lifting driving structure (42) and the support portion (43) to move synchronously.

7. The hot press apparatus according to claim 6, wherein the moving driving structure (41) is a linear driving structure, and the moving driving structure (41) can drive the lifting driving structure (42) to linearly move and drive the supporting portion (43) to linearly reciprocate between a separation position and an avoidance position; or alternatively, the method can be used for processing,

the movable driving structure (41) is a rotary driving structure, and the movable driving structure (41) can drive the lifting driving structure (42) to rotate and drive the supporting part (43) to swing back and forth at the separation position and the avoidance position.

8. The hot press apparatus according to claim 7, wherein two of the moving driving structures (41) are provided, the two moving driving structures (41) are respectively provided on two opposite sides of the lower hot press structure (10), two of the lifting driving structures (42) are also provided, and the two lifting driving structures (42) are respectively provided corresponding to the two moving driving structures (41);

the movable driving structure (41) is a linear driving structure, one supporting part (43) is arranged, and one supporting part (43) is simultaneously connected with the driving ends of the two lifting driving structures (42); or, the moving driving structure (41) is a linear driving structure or a rotary driving structure, two supporting parts (43) are arranged, and the two supporting parts (43) are correspondingly connected with the two lifting driving structures (42) respectively.

9. The hot press apparatus according to claim 8, wherein the lower hot press structure (10) is provided with a lower clearance step (11) along at least one side of the driving direction of the moving driving structure (41); the upper hot pressing structure (20) is provided with an upper clearance step (21) along at least one side of the driving direction of the movable driving structure (41).

10. The hot press device according to claim 9, characterized in that the side walls and the bottom wall of the lower clearance step (11) are provided with heat-insulating structures; and the side wall and the bottom wall of the upper clearance step (21) are both provided with heat insulation structures.

11. A battery production apparatus comprising the hot press device according to any one of claims 1 to 10.

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