Battery cell hot-pressing feeding device

Abstract

The utility model discloses a battery cell hot-pressing feeding device which comprises a deflector rod mechanism, the deflector rod mechanism comprises a supporting plate with a through hole in the middle, a tensioning assembly connected to the supporting plate, a Mylar film fixedly connected to the tensioning assembly and an ejector block, the Mylar film is wound above the through hole, and the ejector block is arranged below the Mylar film; and the feeding and discharging mechanism comprises a lifting assembly and an opening and closing clamping jaw assembly controlled by the lifting assembly, when the feeding and discharging mechanism takes the battery cell from the shifting rod mechanism, the battery cell is supported on the mylar film, and the mylar film is upwards jacked up by the jacking block to be in a protruding state. Through cooperation of the deflector rod mechanism and the feeding and discharging mechanism, the battery cell can be rapidly fed and discharged from the hot-pressing station, the hot-pressing plate can be designed to be of an integrated structure, and it is avoided that indentations are generated on the surface of the battery cell after hot-pressing, and the quality of the battery cell is affected.

Description

Technical Field

[0001] The utility model relates to the technical field of cell hot pressing equipment, in particular to a cell hot pressing loading device. Background Art

[0002] During the processing of power batteries, the cells need to be hot pressed. Generally, the upper and lower hot pressing plates are used to hot press the cells. The loading of the cells and the unloading of the cells after hot pressing are generally carried out by a manipulator. In order to avoid scratching the surface of the cells when the manipulator loads and unloads the cells, the prior art designs the bottom hot pressing plate as a structure composed of multiple hot pressing plates. When loading and unloading, the middle hot pressing plate moves upward to lift the cell so that the two sides of the bottom are suspended. The manipulator picks and places the cell from below the cell suspended on both sides. The problem existing in the design of the existing hot pressing equipment is that the splicing design of multiple hot pressing plates results in poor integrity of the bottom hot pressing plate, and it is easy to cause indentations on the surface of the cell after hot pressing due to assembly errors. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a cell hot pressing loading device to solve the technical problem that the hot pressing plate of the existing cell hot pressing mechanism is spliced, resulting in indentations easily generated on the surface of the cell.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An embodiment of the utility model provides a cell hot pressing loading device, which includes:

[0006] A dial rod mechanism, the dial rod mechanism includes a support plate with a through hole in the middle, a tensioning component connected to the support plate, a mylar film fixedly connected to the tensioning component, and a top block. The mylar film is wound above the through hole, and the top block is arranged below the mylar film. When the mylar film and the top block move closer to each other, the top block pushes the mylar film upward.

[0007] A loading and unloading mechanism, the loading and unloading mechanism includes a lifting component and a clamping jaw component controlled by the lifting component. When the loading and unloading mechanism picks and places the cell from the dial rod mechanism, the cell is supported on the mylar film, and the mylar film is pushed upward by the top block to be in a convex state.

[0008] Wherein, the tensioning component includes: a first fixed clamping plate unit and a second fixed clamping plate unit arranged on the outer sides of one pair of opposite sides of the through hole, and two tensioning units arranged at the same-direction ends of the first fixed clamping plate unit and the second fixed clamping plate unit. The tensioning unit is used to dynamically drive the first fixed clamping plate unit and the second fixed clamping plate unit to move away from each other, and one pair of opposite side edges of the mylar film are respectively fixedly clamped by the first fixed clamping plate unit and the second fixed clamping plate unit.

[0009] Wherein, the tensioning unit includes: a fixing block connected to the support plate, a guide rod passing through the fixing block, a front slider and a rear slider respectively and slidably sleeved on the guide rod, the front slider and the rear slider are respectively located on both sides of the fixing block, an elastic member is provided between the front slider and the fixing block and between the rear slider and the fixing block, the front slider is further connected to the first fixed clamping plate unit, and the rear slider is further connected to the second fixed clamping plate unit.

[0010] Wherein, the toggle mechanism further includes a guiding unit and a lifting slider unit connected to the support plate, and a first driving unit for driving the lifting and moving of the support plate. At least three groups of the guiding units are provided, and the three groups of the guiding units respectively support the periphery of the support plate. The lifting slider unit includes: a lifting guide rail and a slider slidably connected to the lifting guide rail, and the slider is further fixedly connected to the support plate.

[0011] Wherein, the first driving unit is a driving cylinder, and the guiding unit includes: a guide rod connected to the bottom of the support plate and a guide sleeve sleeved on the guide rod.

[0012] Wherein, two groups of the guiding unit, the lifting slider unit and the first driving unit are provided, one group is arranged outside one end of the first fixed substrate unit, and the other group is arranged outside the other end of the first fixed clamping plate unit.

[0013] Wherein, the opening and closing jaw assembly includes: a front jaw, a rear jaw arranged opposite to the front jaw, and a second driving unit for driving the relative opening and closing movement of the rear jaw with respect to the front jaw. Wherein, the front jaw and the rear jaw are controlled by the second driving unit to perform linear movement in the horizontal direction to open and close the jaw opening.

[0014] Wherein, two groups of clamping units are further provided on the top of the rear jaw. The clamping unit includes: a third driving unit and a clamping plate controlled by the third driving unit. When the battery cell is placed on the opening and closing jaw assembly, the third driving unit drives the clamping plate to descend to clamp the battery cell on the opening and closing jaw assembly.

[0015] Wherein, the lifting assembly includes: a longitudinal guide rail, a first slider slidably connected to the longitudinal guide rail, and a fourth driving unit for driving the first slider to lift and slide along the longitudinal guide rail. The second driving unit and the front jaw are both fixedly connected to the first slider.

[0016] Wherein, a second slider and a fifth driving unit for driving the second slider to lift and move along the longitudinal guide rail are further provided on the longitudinal guide rail, and the top block is fixedly connected to the second slider.

[0017] The cell hot pressing and loading device of the present utility model realizes the rapid loading and unloading of cells from the hot pressing station through the cooperation of a dial rod mechanism and a loading and unloading mechanism. Specifically, a top block and a driving unit for driving the lifting of the top block are provided in the loading and unloading mechanism. When the opening and closing jaw assembly picks and places the cell, the top block is controlled to lift the Mylar film, so that the bottoms of both long sides of the cell are suspended, so that the jaws can extend into the bottom of the cell to lift it or place it on the Mylar film. When hot pressing, the top block retracts, so that the hot pressing plate can be designed as an integral structure, avoiding the generation of indentations on the surface of the cell after hot pressing and affecting the quality of the cell.

[0018] The above description is only an overview of the technical solution of the present utility model. In order to be able to understand the technical means of the present utility model more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present utility model more obvious and understandable, the following preferred embodiments are specifically described in detail as follows. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of the cell hot pressing device according to an embodiment of the present utility model.

[0020] Figure 2 It is an isometric structure diagram of the cell hot pressing and loading device according to an embodiment of the present utility model.

[0021] Figure 3 It is a side structure diagram of the cell hot pressing and loading device according to an embodiment of the present utility model.

[0022] Figure 4 is Figure 2 The enlarged structure diagram of the partial A in

[0023] Figure 5 It is an isometric view of the dial rod mechanism part of the cell hot pressing and loading device according to an embodiment of the present utility model.

[0024] Figure 6 It is a side view of the dial rod mechanism part of the cell hot pressing and loading device according to an embodiment of the present utility model.

[0025] Figure 7 It is an isometric view of the loading and unloading mechanism part of the cell hot pressing and loading device according to an embodiment of the present utility model.

[0026] Figure 8 It is a side view of the loading and unloading mechanism part of the cell hot pressing and loading device according to an embodiment of the present utility model.

[0027] Description of the Reference Numerals:

[0028] Cell hot pressing equipment 100, cell 200, hot press 101, loading machine 102, loading and unloading mechanism 10, lever mechanism 20, lower hot pressing plate 30, longitudinal guide rail 11, second slider 12, top block 13, first slider 14, front gripper 15, second driving unit 16, rear gripper 17, tensioning assembly 18, clamping hook 171, third driving unit 181, clamping plate 182, support plate 21, first fixed clamping plate unit 22, second fixed clamping plate unit 23, mylar film 24, guiding and driving assembly 25, tensioning assembly 26, lifting slider unit 251, guiding unit 252, first driving unit 253, fixed block 261, guiding rod 262, front slider 263, rear slider 264, lifting guide rail 2511, slider 2512, guide rod 2521, guide sleeve 2522. Detailed implementation manners

[0029] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without making creative efforts fall within the protection scope of the present utility model.

[0031] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "resin", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0033] In the present utility model, unless otherwise clearly specified or limited, terms such as "installation", "connection", "linkage", "fixation" shall be understood in a broad sense. For example, it may be a connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified or limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0035] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0036] Please refer to Figures 1 to 8 , this embodiment provides a cell hot pressing and loading device, which is applied to a cell hot pressing device 100. The cell hot pressing device 100 includes a hot press 101 and a loading machine 102. Among them, a number of longitudinally distributed lever mechanisms 20 are provided on the hot press 101, and the loading machine 102 includes a number of sets of loading and unloading mechanisms 10 corresponding to the lever mechanisms 20.

[0037] Taking one set of the cell hot pressing and loading devices as an example, it includes: a lever mechanism 20 for hot pressing the cell and a loading and unloading mechanism 10. The loading and unloading mechanism 10 is used to feed the cell to the lever mechanism 20 or take out the cell that has completed hot pressing from the hot pressing station.

[0038] The lever mechanism 20, the lever mechanism 20 includes a support plate 21 with a through hole in the middle, a tensioning assembly connected to the support plate 21, a mylar film 24 fixedly connected to the tensioning assembly, and a top block 13. The mylar film 24 is wound above the through hole, and the top block 13 is arranged below the mylar film 24. When the mylar film 24 and the top block 13 move closer to each other, the top block 13 pushes the mylar film 24 upward, that is, the top block 13 can move upward from the lower side of the through hole and pass through or partially pass through the through hole, and push up the middle part of the mylar film 24.

[0039] The loading and unloading mechanism 10, the loading and unloading mechanism 10 includes a lifting assembly and a clamping jaw assembly controlled by the lifting assembly. When the clamping jaw assembly of the loading and unloading mechanism 10 picks and places the battery cell 200 from the lever mechanism 20, the battery cell 200 is supported on the middle part of the mylar film 24 lifted by the top block 13, and the mylar film 24 is pushed upward by the top block 13 and protrudes.

[0040] In this embodiment, the cooperation of the top block 13 and the mylar film 24 is adopted. When picking and placing the battery cell 200, the top block 13 rises to push up the mylar film 24 from the middle. If it is necessary to place the battery cell on the mylar film 24, the bottom surface of the battery cell in the middle of the clamping opening of the clamping jaw assembly is in a suspended state. At this time, the battery cell 200 can just be placed on the middle part of the mylar film 24 on the top of the top block 13. At this time, the clamping jaw assembly does not contact the mylar film at all, and directly lifts the battery cell 200 from the bottom upward to keep the integrity of its surface; if it is necessary to take out the battery cell, the top block 13 also pushes up the middle part of the mylar film 24, so that the two sides of the bottom of the battery cell 200 are suspended, so that the clamping jaw assembly can grab and remove the battery cell from the suspended bottom.

[0041] Please refer to again Figure 4 and Figure 5, the tensioning assembly includes: a first fixed clamping plate unit 22 and a second fixed clamping plate unit 23 provided on the outer sides of one pair of opposite sides of the through hole of the support plate 21, and two tensioning units 26 provided at the same-direction ends of the first fixed clamping plate unit 22 and the second fixed clamping plate unit 23. The tensioning unit 26 is used to dynamically drive the first fixed clamping plate unit 22 and the second fixed clamping plate unit 23 to move away from each other. One pair of opposite side edges of the mylar film 24 are respectively fixedly clamped by the first fixed clamping plate unit 22 and the second fixed clamping plate unit 23. Specifically, the first fixed clamping plate unit 22 and the second fixed clamping plate unit 23 have the same structure and both include: a clamping bottom plate, a clamping top plate disposed opposite to the clamping bottom plate, and a connecting member for fixedly connecting the clamping top plate and the clamping bottom plate. Both the clamping bottom plate and the clamping top plate are long strip-shaped plates, and a clamping opening for clamping and fixing the mylar film 24 is formed therebetween. In this embodiment, the support plate 21 is a rectangular plate structure, and a through hole is provided in the middle thereof. The through hole is a strip-shaped hole, providing a lifting and moving space for the top block 13. The first fixed clamping plate unit 22 and the second fixed clamping plate unit 23 are respectively provided near the edges in the length direction of the support plate 21, and the mylar film 24 being clamped and fixed blocks the through hole. The top block 13 rises from the through hole and jacks up the mylar film 24 from the bottom thereof.

[0042] Among them, the tensioning unit 26 includes: a fixed block 261 connected to the support plate 21, a guide rod 262 passing through the fixed block 261, a front slider 263 and a rear slider 264 respectively slidably sleeved on the guide rod 262. The front slider 263 and the rear slider 264 are respectively located on both sides of the fixed block 261. An elastic member (not shown in the figure) is provided between the front slider 263 and the fixed block 261 and between the rear slider 264 and the fixed block 261. The front slider 263 is further connected to the first fixed clamping plate unit 22, and the rear slider 264 is further connected to the second fixed clamping plate unit 23. The elastic member is a spring sleeved on the guide rod 262. In the natural state of the spring, the first fixed clamping plate unit 22 and the second fixed clamping plate unit 23 are pushed apart outward, so that the fixed mylar film 24 is in a tensioned state; on the contrary, when the top block 13 jacks up the mylar film 24, the mylar film 24 pulls the first fixed clamping plate unit 22 and the second fixed clamping plate unit 23 to move closer to each other. The spring is compressed, and the first fixed clamping plate unit 22 and the second fixed clamping plate unit 23 respectively move toward each other along the guide rod 261 through the front slider 263 and the rear slider 264.

[0043] Further, the lever mechanism 20 further includes a guiding and driving assembly 25. The guiding and driving assembly 25 includes a guiding unit 252 and a lifting slider unit 251 connected to the support plate 21, and a first driving unit 253 for driving the lifting and moving of the support plate 21. At least three groups of the guiding units 252 are provided, and the three groups of the guiding units 252 are respectively supported at positions near the periphery of the bottom of the support plate 21. The lifting slider unit 251 includes: a lifting guide rail 2511 and a slider 2512 slidably connected to the lifting guide rail 2511, and the slider 2512 is also fixedly connected to the support plate 21. In this embodiment, four groups of the guiding units 252 are provided, which are respectively connected to the bottoms of the four corners of the support plate 21. At least two groups of the lifting slider units 251 are provided and are distributed along the length direction of the support plate 21. Arranging the guiding unit 252 and the lifting slider unit 251 at the bottom of the support plate 21 can improve the lifting stability and reliability of the support plate 21 and the first fixed clamping plate unit 22 and the second fixed clamping plate unit 23 fixed above it.

[0044] Wherein, the first driving unit 253 is a driving cylinder, and the guiding unit 252 includes: a guide rod 2521 connected to the bottom of the support plate 21 and a guide sleeve 2522 sleeved on the guide rod 2521, and the guide sleeve 2522 is fixedly connected to the bracket of the hot press 101.

[0045] In this embodiment, two groups of the guiding unit 252, the lifting slider unit 251 and the first driving unit 253 are provided. One group is arranged outside one end of the first fixed substrate unit 22, and the other group is arranged outside the other end of the first fixed clamping plate unit 22. That is, the guiding mechanisms composed of the above structures are respectively located at the bottoms of the short-side ends of the support plate 21, and the first driving units 253 act synchronously, so that the support plate 21 and its upper mechanism perform the lifting action more stably and smoothly.

[0046] Please refer to again Figure 7 and Figure 8 As shown in, the opening and closing jaw assembly includes: a front jaw 15, a rear jaw 17 arranged opposite to the front jaw 15, and a second driving unit 16 for driving the rear jaw 17 to open and close relative to the front jaw 15. The front jaw 15 and the rear jaw 17 are controlled by the second driving unit 16 to perform linear movement in the horizontal direction to open and close the jaw opening. That is, when the jaw opening of the opening and closing jaw assembly opens and closes, the front jaw 15 and the rear jaw 17 perform linear movement in the horizontal direction, so that the clamping hooks of the front jaw 15 and the rear jaw 17 do not contact each other when lifting the battery cell 200, otherwise the clamping hooks will scratch the surface of the battery cell. The second driving unit 16 adopts a linear driving unit such as a cylinder or an electric cylinder.

[0047] As Figure 7As shown in the figure, the rear clamping jaw 17 of this embodiment is provided with a number of clamping hooks 171 with the same structure and parallel distribution. The clamping hook parts of the multiple clamping hooks 171 are arranged at the same height. On the one hand, the weight of the rear clamping jaw 17 can be reduced, and on the other hand, the contact area with the battery cell can be reduced, reducing the probability of surface damage.

[0048] As Figure 8 shown, two sets of clamping units 18 are also provided at the top of the rear clamping jaw 17. The clamping unit 18 includes: a third driving unit 181 and a clamping plate 182 controlled by the third driving unit 181. When the battery cell 200 is placed on the opening and closing clamping jaw assembly, the third driving unit 181 drives the clamping plate 182 to descend to clamp the battery cell on the opening and closing clamping jaw assembly. Among them, the lower surface of the clamping plate 182 is made of a flexible material, and the battery cell 200 is jointly clamped by the clamping plate 182, the front clamping jaw 15, and the rear clamping jaw 17, so as to maintain stability during the movement of the battery cell and avoid displacement due to shaking and surface damage.

[0049] Among them, the lifting assembly includes: a longitudinal guide rail 11, a first slider 14 slidably connected to the longitudinal guide rail 11, and a fourth driving unit (not shown in the figure) for driving the first slider 14 to lift and slide along the longitudinal guide rail 11. The second driving unit 16 and the front clamping jaw 15 are both fixedly connected to the first slider 14. That is, the entire opening and closing clamping jaw assembly can move up and down along the longitudinal guide rail 11, and the rear clamping jaw 17 is controlled by the second driving unit 16 to move left and right in the horizontal direction.

[0050] Furthermore, the lever mechanism 20 and the loading and unloading mechanism 10 jointly execute the entry or exit of the battery cell into or out of the hot press. Therefore, a second slider 12 is also provided on the longitudinal guide rail 11 and a fifth driving unit (not shown in the figure) for driving the second slider 12 to lift and move along the longitudinal guide rail 11. The top block 13 is fixedly connected to the second slider 12. The fourth driving unit and the fifth driving unit can both adopt linear modules such as cylinders, electric cylinders, and lead screw modules.

[0051] Please refer to Figures 1 to 8 again. The working process of the battery cell hot pressing and loading device of this embodiment is briefly described below. Taking the loading process as an example:

[0052] The first step: When it is necessary to load the battery cell into the hot pressing station, drive the top block 13 to rise. The top block 13 jacks up the middle part of the mylar film 24 from the bottom of the mylar film 24 and waits for the loading and unloading mechanism 10 to send in the battery cell.

[0053] The second step: The rear clamping jaw 17 of the loading and unloading mechanism 10 is controlled to open the clamping mouth, and the whole moves to the battery cell loading station. Control the opening and closing clamping jaw assembly to move to the battery cell loading station, clamp the battery cell, and the clamping unit 18 acts to clamp the battery cell on the opening and closing clamping jaw assembly.

[0054] Step 3: The loading and unloading mechanism 10 drives the opening and closing jaw assembly to move above the mylar film 24, and controls the opening and closing jaw assembly to descend until the bottom center of the battery cell is supported on the mylar film lifted by the top block 13. Then, the rear jaw 17 is controlled to move horizontally and laterally to withdraw from the bottom of the battery cell.

[0055] Step 4: After the opening and closing jaw assembly withdraws from the battery cell, the top block 13 is controlled to descend until the mylar film 24 is substantially horizontal. Then, the lower hot pressing plate 30 and the upper hot pressing plate are controlled to move to the upper and lower surfaces of the battery cell for hot pressing.

[0056] The material taking process is opposite to the above loading process and will not be elaborated here.

[0057] The battery cell hot pressing loading device of this embodiment realizes the fast loading and unloading of the battery cell from the hot pressing station through the cooperation of the dial rod mechanism and the loading and unloading mechanism. Specifically, a top block and a driving unit for driving the lifting of the top block are provided in the loading and unloading mechanism. When the opening and closing jaw assembly picks up and discharges the battery cell, the top block is controlled to lift the mylar film, so that the bottom of both long sides of the battery cell is suspended, facilitating the jaws to extend into the bottom of the battery cell to lift it or place it on the mylar film. When hot pressing, the top block withdraws, so that the hot pressing plate can be designed as an integral structure, avoiding indentations on the surface of the battery cell after hot pressing and affecting the quality of the battery cell.

[0058] The above only uses embodiments to further illustrate the technical content of the present invention to make it easier for readers to understand, but it does not mean that the implementation manners of the present invention are limited to this. Any technical extension or re-creation made according to the present invention is protected by the present invention. The protection scope of the present invention is subject to the claims.

Claims

1. A core hot pressing and feeding device, characterized in that, Comprising: A lever mechanism, the lever mechanism includes a support plate with a through hole in the middle, a tensioning assembly connected to the support plate, a mylar film fixedly connected to the tensioning assembly, and a top block. The mylar film is wound above the through hole, and the top block is arranged below the mylar film. When the mylar film and the top block move closer to each other, the top block pushes the mylar film upward. A loading and unloading mechanism, the loading and unloading mechanism includes a lifting assembly and a clamping jaw assembly controlled by the lifting assembly. When the clamping jaw assembly picks up and discharges the battery cell from the lever mechanism, the battery cell is supported by the mylar film, and the mylar film is pushed upward by the top block to be in a convex state.

2. The core hot pressing and feeding device according to claim 1, characterized in that The tensioning assembly includes: a first fixed clamping plate unit and a second fixed clamping plate unit oppositely arranged outside the through hole, and two tensioning units arranged at the same-direction ends of the first fixed clamping plate unit and the second fixed clamping plate unit. The tensioning units are used to dynamically drive the first fixed clamping plate unit and the second fixed clamping plate unit to move away from each other, and one pair of opposite sides of the mylar film are respectively fixedly clamped by the first fixed clamping plate unit and the second fixed clamping plate unit.

3. The core hot pressing and feeding device according to claim 2, characterized in that, The tensioning unit includes: a fixed block connected to the support plate, a guide rod passing through the fixed block, a front slider and a rear slider respectively slidably sleeved on the guide rod. The front slider and the rear slider are respectively located on both sides of the fixed block. Elastic members are provided between the front slider and the fixed block and between the rear slider and the fixed block. The front slider is also connected to the first fixed clamping plate unit, and the rear slider is also connected to the second fixed clamping plate unit.

4. The cell hot pressing and feeding device according to claim 3, characterized in that, The lever mechanism further includes a guiding unit and a lifting slider unit connected to the support plate, and a first driving unit for driving the support plate to move up and down. At least three groups of guiding units are provided, and the three groups of guiding units are respectively supported at positions near the periphery of the bottom of the support plate. The lifting slider unit includes: a lifting guide rail and a slider slidably connected to the lifting guide rail. The slider is also fixedly connected to the support plate.

5. The cell hot pressing and feeding device according to claim 4, wherein The first driving unit is a driving cylinder. The guiding unit includes: a guide rod connected to the bottom of the support plate and a guide sleeve sleeved on the guide rod.

6. The cell hot pressing and loading device according to claim 5, characterized in that, Two groups of the guiding unit, the lifting slider unit and the first driving unit are provided, one group is arranged outside one end of the first fixed clamping plate unit, and the other group is arranged outside the other end of the first fixed clamping plate unit.

7. The cell hot pressing and feeding device according to any one of claims 1-6, characterized in that, The clamping jaw assembly includes: a front clamping jaw, a rear clamping jaw oppositely arranged to the front clamping jaw, and a second driving unit for driving the rear clamping jaw to open and close relative to the front clamping jaw. Among them, the front clamping jaw and the rear clamping jaw are controlled by the second driving unit to perform linear movement in the horizontal direction to open and close the clamping opening.

8. The cell hot pressing and feeding device according to claim 7, wherein Two groups of clamping units are further provided at the top of the rear clamping jaw. The clamping unit includes: a third driving unit and a clamping plate controlled by the third driving unit. When the battery cell is placed on the clamping jaw assembly, the third driving unit drives the clamping plate to descend to clamp the battery cell on the clamping jaw assembly.

9. The cell hot pressing and feeding device according to claim 8, characterized in that, The lifting assembly includes: a longitudinal guide rail, a first slider slidably connected to the longitudinal guide rail, a fourth driving unit for driving the first slider to lift and slide along the longitudinal guide rail, and both the second driving unit and the front jaw are fixedly connected to the first slider.

10. The cell hot pressing and feeding device according to claim 9, characterized in that, A second slider and a fifth driving unit for driving the second slider to lift and move along the longitudinal guide rail are further provided on the longitudinal guide rail, and the top block is fixedly connected to the second slider.

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