Battery cell packaging aluminum plastic film, preparation method thereof and battery

Abstract

The invention relates to the field of batteries, in particular to a battery cell packaging aluminum plastic film, a preparation method thereof and a battery. A battery cell packaging aluminum plastic film comprises an aluminum plastic film body and a flat coating coated on one side of the aluminum plastic film body, and a corrugated coating is coated on the other side of the aluminum plastic film body. The method comprises the following steps: 1, fully mixing a plurality of raw materials; 2, heating the raw materials into a fluid coating; step 3, releasing the aluminum plastic film for unfolding; 4, the paint is pushed to descend to smear the two sides of the aluminum plastic film; and 5, after the coating is air-dried, winding the battery cell packaging aluminum-plastic film. The battery comprises the battery cell and the aluminum plastic film for packaging the battery cell, and the aluminum plastic film is the battery cell packaging aluminum plastic film. And the aluminum plastic film with the corrugated coating can be prepared for coating a battery cell.

Description

Technical Field

[0001] This invention relates to the field of batteries, and more specifically to an aluminum-plastic film for battery cell encapsulation, a method for preparing the same, and a battery. Background Technology

[0002] Due to the scarcity of fossil fuels and the need for environmental protection, my country has vigorously promoted the development of new energy vehicles, and is now a major producer and seller of new energy vehicles. However, new energy vehicles suffer from poor range and safety at both high and low temperatures. Improving this issue hinges on enhancing the temperature performance of the power battery. At high temperatures, the internal material structure of the battery is damaged, leading to performance degradation and safety hazards; at low temperatures, the internal ion conduction rate slows down, preventing the battery from fully realizing its potential. Encapsulating the battery cells with an aluminum-plastic film allows them to operate within a suitable temperature range, but current technology cannot produce a corrugated aluminum-plastic film for cell coating. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention provides an aluminum-plastic film for battery cell encapsulation, a method for preparing the same, and a battery, which can prepare an aluminum-plastic film with a corrugated coating for encapsulating the battery cell.

[0004] The technical solution adopted by this invention to solve its technical problem is:

[0005] A battery cell encapsulation aluminum-plastic film includes an aluminum-plastic film body and a flat coating applied to one side of the aluminum-plastic film body, while a corrugated coating is applied to the other side of the aluminum-plastic film body.

[0006] Furthermore, the method includes the following steps:

[0007] Step 1: Mix all ingredients thoroughly;

[0008] Step 2: Heat the raw materials into a fluid coating;

[0009] Step 3: Unfold the aluminum-plastic film;

[0010] Step 4: Push the coating down to apply it to both sides of the aluminum-plastic film;

[0011] Step 5: After the coating dries, roll up the aluminum-plastic film for battery cell encapsulation.

[0012] Furthermore, it includes a mixing frame that drives the movement of raw materials, the mixing frame being fixed to the central tube, a heating frame being fixed to the central tube, and the central tube being rotatably connected to the upper frame.

[0013] Furthermore, the upper frame is threadedly connected inside the processing barrel, the processing barrel is fixedly connected to the horizontal tube, a reciprocating plate is slidably connected to the horizontal tube, and multiple coating pipes are fixedly connected to the reciprocating plate.

[0014] Furthermore, a battery includes a battery cell and an aluminum-plastic film for encapsulating the battery cell, wherein the aluminum-plastic film is the aforementioned battery cell encapsulation aluminum-plastic film. Attached Figure Description

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0016] Figure 1 Flowchart of a method for manufacturing aluminum-plastic film for battery cell packaging;

[0017] Figure 2 This is a structural diagram of the mixture;

[0018] Figure 3 This is a structural diagram for material cutting;

[0019] Figure 4 A structural diagram showing the structure that drives the reciprocating plate to slide.

[0020] Figure 5 This is a diagram showing the installation structure of multiple golf clubs.

[0021] Figure 6 A structural diagram for applying paint evenly;

[0022] Figure 7 A structural diagram to drive the rise of coatings;

[0023] Figure 8 This is a structural diagram of the aluminum-plastic film used for producing battery cell packaging.

[0024] 11. Upper rack; 12. Middle tube; 13. Heating rack; 14. Mixing rack; 15. Middle wheel; 16. Offset wheel; 21. Processing barrel; 22. Horizontal tube; 31. Reciprocating plate; 32. Vertical frame; 33. Paint tube; 34. Cylinder I; 41. Offset frame; 42. Ball rod; 51. Side tube; 52. Side plate; 53. Support frame; 54. Offset plate; 55. Opening frame; 61. Push shaft; 62. Push block. Detailed Implementation

[0025] refer to Figure 1 Detailed explanation of the implementation process of the aluminum-plastic film structure for battery cell packaging:

[0026] A battery cell encapsulation aluminum-plastic film includes an aluminum-plastic film body and a flat coating applied to one side of the aluminum-plastic film body. The other side of the aluminum-plastic film body is coated with a corrugated coating. The flat coating facilitates the encapsulation effect of the aluminum-plastic film body, while the corrugated coating on the other side increases the contact area between the coating and the external environment, thereby effectively regulating the temperature of the coating. Furthermore, this coating is a biphase change material coating, which can absorb or release heat, thus regulating the operating temperature of the battery cell and keeping the actual operating temperature of the battery cell within a smaller temperature range, thereby improving the temperature performance of the battery cell. This method offers superior performance compared to existing technologies, and the corrugated coating provides even better regulation through its larger contact area.

[0027] In conjunction with the above embodiments, the following functions can also be achieved;

[0028] refer to Figure 1 The method and process for preparing the aluminum-plastic film for battery cell packaging are described in detail below:

[0029] The method includes the following steps:

[0030] Step 1: Thoroughly mix the various raw materials to achieve the mixing of multiple materials;

[0031] Step 2: Heat the raw materials into a fluid coating to achieve the reaction of multiple raw materials and complete the initial processing of the coating;

[0032] Step 3: Unfold the aluminum-plastic film to facilitate the adhesion of the coating on both sides of the film;

[0033] Step 4: Push the coating down to coat both sides of the aluminum-plastic film, and carry out the preliminary preparation of the aluminum-plastic film for battery cell encapsulation;

[0034] Step 5: After the coating dries, the aluminum-plastic film for cell encapsulation is rolled up to facilitate subsequent battery manufacturing and processing.

[0035] In conjunction with the above embodiments, the following functions can also be achieved;

[0036] refer to Figure 2 and 8 The implementation process of mixing raw materials is described in detail:

[0037] The system includes a mixing frame 14 that moves the raw materials. The mixing frame 14 is fixedly connected to the central tube 12, and a heating frame 13 is fixedly connected to the central tube 12. The central tube 12 is rotatably connected to the upper frame 11. The central tube 12 is connected to an externally installed heating furnace, which can supply high-temperature steam to the central tube 12. The high-temperature steam flows into the heating frame 13 and heats the raw materials in contact with it. When the central tube 12 rotates, it drives the heating frame 13 to rotate, thereby heating all the raw materials in contact with it and fully mixing the materials, accelerating the rapid mixing of the materials. The central tube 12 drives the mixing frame 14 to rotate. The mixing frame 14 is spiral-shaped, which can push the materials to move in the vertical direction, thereby achieving full mixing of the materials for coating preparation.

[0038] In conjunction with the above embodiments, the following functions can also be achieved;

[0039] refer to Figure 3 , 4 Section 5 details the process of applying a coating to one side of the aluminum-plastic film used for battery cell packaging:

[0040] The upper frame 11 is threadedly connected to the processing barrel 21, which is fixedly connected to the horizontal tube 22. A reciprocating plate 31 is slidably connected to the horizontal tube 22, and multiple coating tubes 33 are fixedly connected to the reciprocating plate 31. The coating falls into the lower horizontal tube 22 and then falls through the multiple coating tubes 33. The aluminum-plastic film unfolds from the lower end of the multiple coating tubes 33, so that the coating flowing out of the multiple coating tubes 33 falls onto the lower aluminum-plastic film for coating. The reciprocating sliding of the reciprocating plate 31 enables the multiple coating tubes 33 to slide back and forth, thereby achieving the application of a corrugated coating on the aluminum-plastic film by the multiple coating tubes 33.

[0041] In conjunction with the above embodiments, the following functions can also be achieved;

[0042] refer to Figure 4 The implementation process of driving multiple coating pipes 33 to reciprocate is explained in detail:

[0043] A support frame 32 is fixedly connected to one side of the reciprocating plate 31. A cylinder I 34 that drives the support frame 32 is fixedly connected to the horizontal tube 22. When the cylinder I 34 is started, the cylinder rod of the cylinder I 34 drives the support frame 32 to slide back and forth. The support frame 32 drives the reciprocating plate 31 to slide back and forth. The reciprocating plate 31 drives multiple coating tubes 33 to slide back and forth, thereby realizing the application of corrugated coating by coating paint falling from multiple coating tubes 33 onto the aluminum-plastic film at the lower end.

[0044] In conjunction with the above embodiments, the following functions can also be achieved;

[0045] refer to Figure 6 and 8 The following details the process of applying coating to both sides of the aluminum-plastic film:

[0046] Both ends of the horizontal tube 22 are fixedly connected to side tubes 51. The two side tubes 51 are respectively fixedly connected to two side plates 52. The two side plates 52 are fixedly connected to the support frame 53. The support frame 53 is fixedly connected to two offset plates 54 and two open frames 55, so that the aluminum-plastic film can be laid flat on the two offset plates 54, thereby applying a corrugated coating to the upper surface of the aluminum-plastic film. The coating in the horizontal tube 22 falls into the lower support frame 53 through the two side tubes 51. By pushing the coating out from the two open frames 55, the coating is applied to the lower surface of the aluminum-plastic film, thereby realizing the preparation of the battery cell packaging aluminum-plastic film.

[0047] In conjunction with the above embodiments, the following functions can also be achieved;

[0048] refer to Figure 7 and 8 This section details the process of applying the coating to the aluminum-plastic film to achieve a smooth finish.

[0049] Two push shafts 61 are rotatably connected to the two side plates 52. Multiple push blocks 62 are fixedly connected to each of the two push shafts 61. The two push shafts 61 are respectively fixedly connected to the output shafts of two geared motors I. The two geared motors I are fixedly connected to the corresponding side plates 52. When the two geared motors I are started, the two geared motors I drive the two push shafts 61 to rotate. The two push shafts 61 drive the multiple push blocks 62 to rotate, thereby enabling the multiple push blocks 62 to push the paint upward, so that the paint overflows from the two opening frames 55 to smooth the aluminum-plastic film.

[0050] In conjunction with the above embodiments, the following functions can also be achieved;

[0051] refer to Figure 2 The implementation process of driving the rotation of the central tube 12 is explained in detail:

[0052] A central wheel 15 is fixedly connected to the central tube 12, and a eccentric wheel 16 that drives the central wheel 15 to rotate is rotatably connected to the upper frame 11. The eccentric wheel 16 is fixedly connected to the output shaft of the reduction motor II, and the reduction motor II is fixedly connected to the upper frame 11. When the reduction motor II is started, the reduction motor II drives the eccentric wheel 16 to rotate, and the eccentric wheel 16 engages and drives the central wheel 15 to rotate. The central wheel 15 drives the central tube 12 to rotate, thereby realizing the rotation of the heating frame 13 and the mixing frame 14, thereby realizing the full heating and mixing of the material, and realizing the preparation of the coating.

[0053] In conjunction with the above embodiments, the following functions can also be achieved;

[0054] refer to Figure 5 and 8 The following details the implementation process for the paint falling from multiple paint tubes 33:

[0055] A bracket 41 is fixedly connected to each of the multiple paint tubes 33. A ball rod 42 corresponding to each of the multiple paint tubes 33 is fixedly connected to the bracket 41. The paint falling from the multiple paint tubes 33 is separated by the multiple ball rods 42, so that the falling paint is divided into multiple ripples and completely covers one side of the aluminum-plastic film, thereby completing the coating of both sides of the aluminum-plastic film.

[0056] In conjunction with the above embodiments, the following functions can also be achieved;

[0057] refer to Figure 1 and 8 The battery implementation process is explained in detail:

[0058] A battery includes a battery cell and an aluminum-plastic film for encapsulating the battery cell, wherein the aluminum-plastic film is the aforementioned battery cell encapsulation aluminum-plastic film.

Claims

1. An aluminum laminate film for an electric cell package, characterized by: The aluminum plastic film body is coated with a flat coating on one side, and a corrugated coating on the other side.

2. The method of claim 1, wherein the method further comprises: The method comprises the following steps: Step one: mix the raw materials thoroughly; Step two: heat the raw materials into fluid coating; Step three: release the aluminum plastic film for spreading; Step four: push the coating down to coat both sides of the aluminum plastic film; Step five: after the coating is air-dried, the battery cell is packaged and the aluminum plastic film is rolled up.

3. The method of claim 2, wherein: The mixing frame (14) is fixed to the middle tube (12), the heating frame (13) is fixed to the middle tube (12), and the middle tube (12) is rotatably connected to the upper frame (11).

4. The method of claim 3, wherein: The upper frame (11) is threadedly connected in the processing barrel (21), the processing barrel (21) is fixed to the cross tube (22), the reciprocating plate (31) is slidably connected to the cross tube (22), and the plurality of coating pipes (33) are fixed to the reciprocating plate (31).

5. The method of claim 4, wherein: One side of the reciprocating plate (31) is fixed with a stand (32), and the cross tube (22) is fixed with a cylinder I (34) for driving the stand (32) to move.

6. The method of claim 5, wherein: Both ends of the cross tube (22) are fixed with side tubes (51), the two side tubes (51) are respectively fixed to two side plates (52), the two side plates (52) are fixed to a supporting frame (53), and the supporting frame (53) is fixed with two bias plates (54) and two opening frames (55).

7. The method of claim 6, wherein the method further comprises: The two side plates (52) are rotatably connected with two push shafts (61), and the two push shafts (61) are fixed with a plurality of push blocks (62).

8. The method of claim 3, wherein the method further comprises: The middle tube (12) is fixed with a middle wheel (15), and the upper frame (11) is rotatably connected with a bias wheel (16) for driving the middle wheel (15) to rotate.

9. The method of claim 4, wherein the method further comprises: The plurality of coating pipes (33) are fixed with a bias frame (41), and the bias frame (41) is fixed with a ball rod (42) corresponding to each of the plurality of coating pipes (33).

10. A battery, characterized by: The aluminum plastic film for packaging the battery cell is the aluminum plastic film for packaging the battery cell according to claim 1.

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