CN220856645U - Battery cell hot pressing device and battery production equipment - Google Patents

Abstract

The utility model relates to the technical field of battery manufacturing, and provides a battery cell hot pressing device and battery production equipment, comprising: the battery cell bearing mechanism is arranged in the frame body and used for bearing the battery cells and can generate a pressing force on the battery cells; the compressing mechanism acts on the battery cell bearing mechanism and is suitable for applying compressing force to the battery cell bearing mechanism; the compressing and compensating mechanism comprises a movably arranged compensating piece, and the compensating piece is suitable for being switched between a first state and a second state, and in the first state, the compressing mechanism can act on the compensating piece so as to apply compressing force to the cell bearing mechanism through the compensating piece; in the second state, the compensation piece releases the power transmission with the compressing mechanism and is positioned at one side of the compressing mechanism.

Description

Battery cell hot pressing device and battery production equipment

Technical Field

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

Background

The hot pressing of the battery cell is an important process for battery production, and usually, the laminated battery cell is placed in a hot pressing device, parameters of the hot pressing device are set, positive and negative electrode plates in the battery cell are pressed together with an isolating film, so that the positive and negative electrode plates and a diaphragm are tightly attached, and the battery cell after hot pressing is used for the next process.

The existing battery cell hot-pressing device generally comprises an upper template and a lower template, a battery cell is clamped between the two templates, and then the upper template and the lower template are folded, so that the battery cell is subjected to certain pressure and temperature, and the purpose of hot-pressing and shaping the battery cell is achieved. In order to improve the hot pressing efficiency of the battery cells, the battery cell hot pressing device generally needs to simultaneously hot press a plurality of battery cells, and specifically, the battery cells are arranged in the hot pressing device in a layered manner, and a pressing plate is used for simultaneously providing pressing force for the battery cells.

However, the number of the electric cores to be hot pressed each time can be changed, so that the lamination heights are different, the compression mechanism has the defect of insufficient working stroke, and pressure cannot be applied to the electric cores, so that the compression effect of the electric cores is affected.

Disclosure of utility model

The utility model provides a battery cell hot pressing device and battery production equipment, which are used for solving the defect that the stroke of a pressing mechanism in the prior art cannot meet the requirement of pressing a battery cell.

In a first aspect, the present utility model provides a cell hot press apparatus, comprising:

The battery cell bearing mechanism is arranged in the frame body and used for bearing the battery cells and generating a pressing force on the battery cells;

The compressing mechanism acts on the battery cell bearing mechanism and is suitable for applying compressing force to the battery cell bearing mechanism;

A compression compensation mechanism comprising a movably arranged compensation member adapted to switch between a first state in which the compression mechanism is capable of acting on the compensation member to apply a compression force to the cell-carrying mechanism via the compensation member and a second state; in the second state, the compensation piece releases power transmission with the pressing mechanism and is positioned on one side of the pressing mechanism.

According to the battery cell hot pressing device provided by the utility model, the battery cell hot pressing device further comprises a pressing plate, wherein the pressing plate is arranged in the frame body in a lifting manner, the pressing plate is positioned between the battery cell bearing mechanism and the pressing mechanism, the compensation piece is movably arranged on the pressing plate, and when the compensation piece is in the first state, the pressing mechanism acts on the pressing plate through the compensation piece so as to apply a pressing force to the battery cell bearing mechanism through the pressing plate; when the compensation piece is in the second state, the power transmission between the compensation piece and the pressing mechanism is released, and the compensation piece is positioned on one side of the pressing mechanism.

According to the hot press device for the battery cell provided by the utility model, the compaction compensation mechanism further comprises:

The driving assembly is arranged on the pressing plate and used for driving the compensation piece to switch between a first state and a second state.

According to the battery cell hot pressing device provided by the utility model, the sliding connection structure is arranged between the compensation piece and the pressing plate.

According to the electric core hot pressing device provided by the utility model, the sliding connection structure comprises:

The sliding rail is arranged on the pressing plate;

And the sliding groove is arranged on the connecting surface of the compensation piece and is in sliding fit with the sliding rail.

According to the battery cell hot pressing device provided by the utility model, the plurality of pressing cavities are arranged in parallel in the frame body, and each pressing cavity is internally provided with the battery cell bearing mechanism.

According to the battery core hot pressing device provided by the utility model, two pressing cavities are arranged in parallel in the frame body, the battery core bearing mechanism is arranged in each pressing cavity, one compensation piece is arranged corresponding to each pressing cavity, and the two compensation pieces are driven by the driving assembly so as to drive each compensation piece to switch between a first state and a second state; in the first state, the two compensating pieces are respectively in one-to-one correspondence with the two cell bearing mechanisms, and the pressing mechanism can act on the two compensating pieces so as to apply pressing force to the cell bearing mechanisms through the compensating pieces; in the second state, the two compensation pieces are used for releasing power transmission with the compressing mechanism and are respectively positioned at two sides of the compressing mechanism.

According to the battery cell hot pressing device provided by the utility model, the battery cell bearing mechanism comprises a plurality of trays which are arranged in a stacked manner, the uppermost tray is connected with the pressing plate, two adjacent trays are connected through the distance changing assembly, and the distance changing assembly is used for adjusting the distance between the two adjacent trays.

According to the battery cell hot pressing device provided by the utility model, the distance changing assembly comprises the moving part and the follow-up part, the moving part is movably connected with the follow-up part, the moving part and the follow-up part are respectively and fixedly connected with two adjacent trays, and the moving part can move along with the trays and drive the follow-up part and the trays connected with the follow-up part to move.

According to the battery core hot pressing device provided by the utility model, the frame body is further provided with the lifting driving mechanism, and the driving end of the lifting driving mechanism is connected with the pressing plate and is used for driving the pressing plate and the plurality of trays to move along the height direction of the frame body.

According to the battery cell hot pressing device provided by the utility model, the top of the frame body is provided with the buffer corresponding to the driving end of the lifting driving mechanism.

In a second aspect, the utility model also provides a battery production device, comprising the cell hot pressing device described in the first aspect.

The utility model provides a battery cell hot pressing device, which comprises a frame body, a pressing mechanism and a pressing compensation mechanism, wherein a battery cell bearing mechanism is arranged in the frame body and used for bearing a battery cell and generating pressing force on the battery cell, the pressing mechanism acts on the battery cell bearing mechanism, and the pressing mechanism is suitable for applying the pressing force on the battery cell bearing mechanism; the compression compensation mechanism is arranged to make up the defect of insufficient stroke of the compression mechanism, the compensation member is moved to be close to or far away from the compression mechanism, so that the switching between the first state and the second state is realized, when the compensation member is in the first state, the compression mechanism can act on the compensation member, and the compression force is applied to the cell bearing mechanism through the compensation member; when the compensation piece is in the second state, the compensation piece is in a position far away from the pressing mechanism, and at the moment, the pressing mechanism does not act on the compensation piece any more; the utility model discloses compact structure can be according to actual operating condition, whether selects to use compression compensation mechanism in order to compensate compression mechanism stroke, and should compress tightly compensation mechanism and can not occupy the space of electric core bearing mechanism in the support body, can load more electric cores in being favorable to the support body, has improved hot pressing efficiency and hot pressing effect.

The utility model also provides battery production equipment, which comprises the battery core hot pressing device. The deducing process of the beneficial effects is substantially similar to that of the above-mentioned cell hot pressing device, and will not be described herein.

Drawings

In order to more clearly illustrate the utility model or the technical solutions of the prior art, the drawings used 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 utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a hot press device for a battery cell according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a hot press device for a battery cell according to another embodiment of the present utility model;

FIG. 3 is a schematic diagram of a compression compensation mechanism according to an embodiment of the present utility model;

Fig. 4 is a schematic structural diagram of a cell supporting mechanism according to an embodiment of the present utility model;

Fig. 5 is a schematic structural view of a lifting driving mechanism according to an embodiment of the present utility model.

Reference numerals:

1. A frame body; 11. pressing a cavity; 12. a mounting plate;

2. a pressing plate; 21. driving the connecting block; 3. a compressing mechanism;

4. A compression compensation mechanism; 41. a compensation member; 42. a slide rail; 43. a slide; 44. a driving device; 45. a connecting piece;

5. the cell bearing mechanism; 51. a tray; 52. a moving member; 53. a follower; 54. a movable hole;

6. A lifting driving mechanism; 61. a floating joint; 7. a short circuit test contact probe; 8. a buffer.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. 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.

A cell hot pressing apparatus and a battery production device provided in an embodiment of the present utility model are described below with reference to fig. 1 to 5.

The embodiment provides a battery cell hot pressing device, which comprises a frame body 1, a pressing mechanism 3 and a pressing compensation mechanism 4.

The battery cell bearing mechanism 5 is arranged in the frame body 1, and the battery cell bearing mechanism 5 is used for bearing battery cells, can be a plurality of battery cells which are arranged in a stacked mode, and can respectively generate a pressing force on each battery cell; the compressing mechanism 3 is arranged at the top of the frame body 1, the compressing mechanism 3 acts on the cell bearing mechanism 5, the compressing mechanism 3 is suitable for applying compressing force to the cell bearing mechanism 5, the compressing compensating mechanism 4 comprises a compensating piece 41 which is movably arranged, the compensating piece 41 is suitable for being switched between a first state and a second state, and in the first state, the compressing mechanism 3 can act on the compensating piece 41 so as to apply compressing force to the cell bearing mechanism 5 through the compensating piece 41; in the second state, the compensator 41 releases the power transmission with the hold-down mechanism 3 and is located on one side of the hold-down mechanism 3.

In this embodiment, the device further includes a pressing plate 2, the pressing plate 2 is disposed in the frame 1 in a liftable manner, and the pressing plate 2 is located between the cell bearing mechanism 5 and the pressing mechanism 3, which may be that the pressing plate 2 is connected to a top end of the cell bearing mechanism 5, and the pressing plate 2 and the top end are moved in a liftable manner together, the compensation member 41 is movably disposed on the pressing plate 2, and when the compensation member 41 is in the first state, the pressing mechanism 3 acts on the pressing plate 2 through the compensation member 41 so as to apply a pressing force to the cell bearing mechanism 5 through the pressing plate 2; when the compensator 41 is in the second state, the compensator 41 releases the power transmission with the hold-down mechanism 3 and is located on one side of the hold-down mechanism 3.

As can be seen from the above-mentioned scheme, when the utility model is in use, the stroke of the pressing mechanism 3 is compensated by moving the compensation piece 41 on the pressing plate 2; after the pressing plate 2 is lowered to a certain height, the compensating piece 41 is translated, so that the pressing mechanism 3 can act on the compensating piece 41, the compensating piece 41 applies pressure to the cell bearing mechanism 5 through the pressing plate 2, and the cell is pressurized; after the hot pressing is finished, the pressing plate 2 is lifted up again by translating the compensator 41 away from the pressing mechanism 3.

In some embodiments, the compensator 41 is in a columnar structure and is vertically disposed on the platen 2; alternatively, the compensation member 41 may have a block-like structure, and may have a larger stress surface than a columnar structure; when the compensation piece 41 is in the first state, the compensation piece 41 is positioned right below the pressing mechanism 3, and the pressing mechanism 3 applies force to the compensation piece 41 and the pressing plate 2 to transmit pressure to the cell bearing mechanism 5; the compensation member 41 may be located at a position away from the hold-down mechanism 3 in the first state, and may be on one side of the hold-down mechanism 3.

Of course, this is merely illustrative, and not limiting, and the compensator 41 may take other configurations.

Referring to fig. 3, in the present embodiment, a sliding connection structure is provided between the compensation member 41 and the platen 2, and the sliding connection structure includes a sliding rail 42 provided on the platen 2; and a sliding groove arranged on the connecting surface of the compensation piece 41, wherein the sliding groove is in sliding fit with the sliding rail 42. This arrangement facilitates the movement of the compensator 41 on the platen 2, ensuring smooth switching of the compensator 41 between the first and second states.

Preferably, in order to improve the reliability of the connection between the compensation member 41 and the platen 2, the compensation member 41 is fixedly connected to the slide 43, as shown in fig. 3, the end surface of the slide 43 is larger than the end surface of the compensation member 41, and the bottom of the slide 43 is slidably connected to the slide rail 42.

Further, the compression compensation mechanism 4 further comprises a driving assembly provided on the platen 2 for driving the compensator 41 to switch between the first state and the second state.

Specifically, the driving assembly includes a driving device 44 and a connecting piece 45, the driving device 44 is disposed on the platen 2, the connecting piece 45 is disposed between the driving device 44 and the compensating piece 41, and is in transmission connection with the driving device 44 and the compensating piece 41, respectively, for transmitting the driving force of the driving device 44 to the compensating piece 41 so as to drive the compensating piece 41 to switch between the first state and the second state.

In some embodiments, the driving device 44 adopts a driving motor, the connecting piece 45 is a belt, as shown in fig. 3, the driving motor and the driven wheel are respectively arranged at the left end and the right end of the pressing plate 2, the output shaft of the driving motor is sleeved with a driving wheel, the belt is sleeved between the driving wheel and the driven wheel, any part of the belt is connected with a belt connecting plate, the belt connecting plate is connected with the compensation piece 41 or the sliding seat 43, and the belt is driven to move by the driving motor, so that the belt connecting plate is driven to drive the compensation piece 41 to move on the pressing plate 2; in addition, the connecting piece 45 can also adopt a chain, and the driving wheel and the driven wheel are both chain wheels, so that the effects can be realized.

In other embodiments, the driving device 44 adopts a driving motor, the connecting piece 45 is a screw, one end of the screw is connected with an output shaft of the driving motor, the other end of the screw is in threaded connection with the sliding seat 43 or the compensating piece 41, the driving motor drives the screw to rotate around the axis of the screw, and drives the sliding seat 43 or the compensating piece 41 to move along the axial direction of the screw, so that the circular motion is converted into the linear motion, and the movement of the compensating piece 41 on the pressing plate 2 is realized.

In other embodiments, the driving device 44 may also be an air cylinder, a hydraulic cylinder or an electric cylinder, where the cylinder body of the driving device 44 is fixed on the platen 2, and the telescopic shaft of the driving device 44 is fixedly connected with the sliding seat 43 or the compensating element 41, and drives the compensating element 41 to move on the platen 2, close to or far from the pressing mechanism 3, so as to switch between the first state and the second state through linear expansion and contraction of the telescopic shaft.

In this embodiment, at least two pressing chambers 11 are arranged in parallel in the frame body 1, and each pressing chamber 11 is provided with a cell bearing mechanism 5, so that the top end of each cell bearing mechanism 5 is connected with the pressing plate 2.

So set up, through setting up a plurality of pressure chambeies 11 that side by side in support body 1, all be provided with electric core bearing mechanism 5 in every pressure chamber 11, overall structure overall arrangement is compacter, can press more electric cores simultaneously, improves work efficiency.

As shown in fig. 1 and 2, two pressing chambers 11 are arranged in parallel in the frame body 1, the top end of the cell bearing mechanism 5 in each pressing chamber 11 is connected with the pressing plate 2, and the pressing plate 2 can apply pressure to the cells in each pressing chamber 11 at the same time.

As shown in fig. 3, when two pressing chambers 11 are arranged in parallel in the frame body 1, two compensators 41 are movably arranged on the pressing plate 2, in a first state, the two compensators 41 are located right above the two pressing chambers 11, and in a second state, the two compensators 41 are located at two ends of the pressing plate 2 and at two sides of the frame body 1; the state switching can be realized by the following modes: the left end and the right end of the pressing plate 2 are respectively provided with a driving motor and a driven wheel, the output shaft of the driving motor is sleeved with a driving wheel, a belt is sleeved between the driving wheel and the driven wheel, the upper belt and the lower belt are respectively connected with a belt connecting plate, the two belt connecting plates are connected with the compensation piece 41 or the sliding seat 43, the driving motor drives the belt to move, so that the two compensation pieces 41 are mutually close to or far away from each other, and the belt connecting plates are driven to drive the compensation piece 41 to move on the pressing plate 2.

In some embodiments, the pressing mechanism 3 may be one pressing cylinder or more than two pressing cylinders, when two pressing cavities 11 are arranged in the frame body 1 in parallel, the two pressing cylinders are respectively and correspondingly arranged right above each pressing cavity 11, or one pressing cylinder is arranged at an intermediate position above the two pressing cavities 11, and an end plate is arranged at the telescopic driving end of the pressing cylinder, and the end plate can apply pressure to two compensation pieces 41 in a balanced manner, so that the overall weight and cost are reduced by adopting one pressing cylinder. When more than two pressing cavities 11 are arranged in parallel in the frame body 1, a plurality of pressing cylinders can be correspondingly arranged right above each pressing cavity 11, or one pressing cylinder can be arranged in the middle position above the plurality of pressing cavities 11 and connected with an end plate at the telescopic driving end of the pressing cylinder.

Referring to fig. 4, in one embodiment, the cell bearing mechanism 5 includes a plurality of trays 51 stacked, the trays 51 are used for bearing the cells, the uppermost tray 51 is connected with the pressing plate 2, the adjacent two trays 51 are connected through a distance changing assembly, and the distance changing assembly is used for adjusting the distance between the adjacent two trays 51; the pitch-changing assembly comprises a moving member 52 and a follower 53, wherein the moving member 52 is movably connected with the follower 53, the moving member 52 and the follower 53 are respectively and fixedly connected with two adjacent trays 51, and the moving member 52 can move along with the trays 51 and drive the follower 53 and the trays 51 connected with the follower 53 to move.

So set up, through setting up the displacement subassembly, realize the connection between a plurality of trays 51, and when clamp plate 2 drove the tray 51 of top and rise, can drive other trays 51 and remove together, the drive mode is simple.

Further, each tray 51 is provided with a short circuit test contact probe 7 for detecting the standard degree of the processed battery cell and ensuring the qualification rate of the finished product.

In this embodiment, the moving member 52 is vertically provided with a movable hole 54, and the follower 53 is disposed in the movable hole 54 and slidably connected to the movable hole 54. As shown in fig. 4, the moving member 52 has a block structure, a bar-shaped or kidney-shaped movable hole 54 is vertically provided on the moving member 52, the follower 53 may be a moving rod, a moving shaft or a cam follower, the follower 53 is movably provided in the movable hole 54, and the distance between two adjacent trays 51 is changed as the position of the follower 53 in the movable hole 54 is changed.

In one embodiment, as shown in fig. 4, a mounting plate 12 is disposed in the frame 1, and the cell bearing mechanism 5 is slidably connected to the mounting plate 12. Specifically, the mounting plate 12 is provided with a guide rail, and each tray 51 is slidably connected with the guide rail, so that stability of the tray 51 in the moving process is ensured.

In this embodiment, the frame 1 is further provided with a lifting driving mechanism 6, and a driving end of the lifting driving mechanism 6 is connected with the pressing plate 2 and is used for driving the pressing plate 2 and the plurality of trays 51 to move along the height direction of the frame 1.

As shown in fig. 5, the lifting driving mechanism 6 is arranged at the back of the frame body 1, the lifting driving mechanism 6 can be one of an electric cylinder, an air cylinder or a hydraulic cylinder, the lifting driving mechanism 6 is positioned below the pressing plate 2, the pressing plate 2 is connected with a driving connecting block 21, the driving connecting block 21 corresponds to a telescopic rod of the lifting driving mechanism 6, and the driving connecting block 21 is driven to rise through the extension of the telescopic rod, so that the pressing plate 2 and the plurality of trays 51 are driven to move together; when each follower 53 moves to the top end of the movable hole 54, at this time, the distance between all trays 51 is the largest, and the pressing plate 2 cannot move continuously, at this time, the to-be-pressed electric core can be placed in the tray 51 or the electric core after hot pressing can be taken out; when the telescopic rod is gradually retracted, the pressing plate 2 and each tray 51 descend until each follower 53 moves to the bottom end of the movable hole 54, at this time, the distance between all trays 51 is minimum, when the telescopic rod is fully retracted, the telescopic rod is no longer in contact with the driving connection block 21 and is located below the pressing plate 2, at this time, the movable compensation piece 41 is located below the pressing mechanism 3 for performing the subsequent electric core hot pressing process.

Optionally, when the frame body 1 is provided with a plurality of pressing cavities 11, the lifting driving mechanisms 6 are arranged in a plurality, so that the lifting driving mechanisms 6 and the pressing cavities 11 are in the same one-to-one correspondence; of course, the lifting driving mechanism 6 may be disposed at a position in the middle of the plurality of pressing chambers 11, the driving connection blocks 21 in the respective pressing chambers 11 are connected through the linkage plate, and then the acting force of the driving end of the lifting driving mechanism 6 is applied to the middle of the linkage plate.

When the battery cells are placed in the respective trays 51 and pressure is applied thereto, the telescopic rod of the lifting driving mechanism 6 should be retracted below the driving connection block 21 and not contact with the same, so as to prevent the pressing plate 2 from rigidly colliding with the telescopic rod of the lifting driving mechanism 6 when the battery cells are pressed by the compensating member 41.

When the utility model is used, after the telescopic rod of the lifting driving mechanism 6 drives the pressing plate 2 and the plurality of trays 51 to descend to a certain height together, the compensation piece 41 on the pressing plate 2 can be moved at the moment, so that the compensation piece 41 moves to the lower part of the pressing mechanism 3 to compensate the stroke of the pressing mechanism 3, and the compensation piece 41 applies pressure to the cell bearing mechanism 5 through the pressing plate 2 to apply pressure to the cell; after the hot pressing is finished, the pressing plate 2 is lifted up through the telescopic rod of the lifting driving mechanism 6 by translating the compensation piece 41 away from the pressing mechanism 3 again, and the distance between the adjacent trays 51 is increased, so that the hot pressed battery cells can be taken out conveniently.

In some embodiments, the drive end of the lift drive mechanism 6 is provided with a floating joint 61; so configured, when the telescoping rod contacts the drive connection block 21, the floating joint 61 can slow down the impact and wear, protect the mechanical components, and extend its useful life.

Further, the top of each pressing cavity 11 is provided with a buffer 8 corresponding to the driving end of the lifting driving mechanism 6, and the buffer 8 can adopt an elastic piece or a flexible piece to prevent the driving end from rigidly contacting with the frame body 1.

As shown in fig. 5, a buffer 8 is provided at the top of each pressing chamber 11 of the frame body 1, which can be used to prevent the rigid collision of the driving connection block 21 with the frame body 1 from damaging the apparatus when the pressing plate 2 is lifted to the highest position.

The embodiment of the utility model also provides battery production equipment, which comprises the battery core hot pressing device.

The battery production equipment adopts the battery cell hot pressing device, so that the battery cell hot pressing device has all the advantages.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (11)

1. A cell hot press device, comprising:

the battery cell supporting device comprises a frame body (1), wherein a battery cell bearing mechanism (5) is arranged in the frame body (1), and the battery cell bearing mechanism (5) is used for bearing a battery cell and can generate a pressing force on the battery cell;

The pressing mechanism (3), the pressing mechanism (3) acts on the battery cell bearing mechanism (5), and the pressing mechanism (3) is suitable for applying pressing force to the battery cell bearing mechanism (5);

-a compression compensation mechanism (4) comprising a movably arranged compensation member (41), the compensation member (41) being adapted to switch between a first state in which the compression mechanism (3) is capable of acting on the compensation member (41) to apply a compression force to the cell-carrying mechanism (5) through the compensation member (41); in the second state, the compensation member (41) releases the power transmission with the pressing mechanism (3) and is positioned at one side of the pressing mechanism (3).

2. The cell hot press device according to claim 1, further comprising a pressing plate (2), the pressing plate (2) being liftably arranged in the frame body (1) with the pressing plate (2) being located between the cell carrying mechanism (5) and the pressing mechanism (3), the compensating member (41) being movably arranged on the pressing plate (2), the pressing mechanism (3) acting on the pressing plate (2) through the compensating member (41) to apply a pressing force to the cell carrying mechanism (5) through the pressing plate (2) when the compensating member (41) is in the first state; when the compensation member (41) is in the second state, the compensation member (41) and the pressing mechanism (3) are released from power transmission and are positioned on one side of the pressing mechanism (3).

3. The cell hot press device according to claim 2, wherein the compression compensation mechanism (4) further comprises:

and the driving assembly is arranged on the pressing plate (2) and is used for driving the compensation piece (41) to switch between a first state and a second state.

4. A cell hot press according to claim 3, characterized in that a sliding connection structure is provided between the compensation member (41) and the pressing plate (2), the sliding connection structure comprising:

a slide rail (42) arranged on the pressing plate (2);

And a sliding groove arranged on the connecting surface of the compensation piece (41), wherein the sliding groove is in sliding fit with the sliding rail (42).

5. The cell hot pressing device according to claim 1, wherein a plurality of pressing cavities (11) are arranged in the frame body (1) in parallel, and each pressing cavity (11) is internally provided with the cell bearing mechanism (5).

6. A hot press device for electrical cores according to claim 3, characterized in that two pressing cavities (11) are arranged in parallel in the frame body (1), the electrical core bearing mechanism (5) is arranged in each pressing cavity (11), one compensation piece (41) is respectively arranged corresponding to each pressing cavity (11), and the two compensation pieces (41) are driven by the driving assembly so as to drive each compensation piece (41) to switch between a first state and a second state; in the first state, the two compensating pieces (41) are respectively in one-to-one correspondence with the two cell bearing mechanisms (5), and the pressing mechanism (3) can act on the two compensating pieces (41) so as to apply pressing force to the cell bearing mechanisms (5) through the compensating pieces (41); in the second state, the two compensators (41) release the power transmission with the pressing mechanism (3) and are respectively positioned at two sides of the pressing mechanism (3).

7. The cell hot press device according to any one of claims 2 to 4, wherein the cell carrying mechanism (5) comprises a plurality of trays (51) arranged in a stacked manner, the uppermost tray (51) is connected with the pressing plate (2), and two adjacent trays (51) are connected through a distance changing assembly, and the distance changing assembly is used for adjusting the distance between the two adjacent trays (51).

8. The cell hot press device according to claim 7, wherein the distance changing assembly comprises a moving member (52) and a follower (53), the moving member (52) is movably connected with the follower (53), the moving member (52) and the follower (53) are respectively and fixedly connected with two adjacent trays (51), and the moving member (52) can move along with the trays (51) and drive the follower (53) and the trays (51) connected with the follower (53) to move.

9. The hot press device for the battery cells according to claim 7, wherein the frame body (1) is further provided with a lifting driving mechanism (6), and a driving end of the lifting driving mechanism (6) is connected with the pressing plate (2) and is used for driving the pressing plate (2) and the plurality of trays (51) to move along the height direction of the frame body (1).

10. The cell hot press device according to claim 9, characterized in that a buffer (8) corresponding to the driving end of the lifting driving mechanism (6) is provided at the top of the frame body (1).

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