Aluminum-plastic film shell, battery and electronic equipment

Abstract

The utility model relates to the technical field of batteries, in particular to an aluminum-plastic film shell, a battery and electronic equipment. The aluminum-plastic film shell comprises a first edge sealing area and a second edge sealing area, the first edge sealing area is arranged on the side, close to the battery cell, of the aluminum-plastic film shell, the second edge sealing area and the first edge sealing area are arranged in a spaced mode, the second edge sealing area is arranged on the side, away from the battery cell, of the first edge sealing area, and the second edge sealing area is arranged on the side, away from the battery cell, of the aluminum-plastic film shell. A first opening part is arranged on one side, close to the battery cell, of the first edge sealing area. The battery comprises the aluminum plastic film shell. The electronic equipment comprises the battery disclosed by the utility model. According to the utility model, high pressure generated in the aluminum-plastic film shell can be released in time, and the safety during a hot box test experiment is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially relates to a plastic film aluminum shell, battery and electronic equipment. BACKGROUND

[0002] With the rapid development of modern science and technology, mobile electronic products and electric equipment occupy more and more important position in people's daily life. Lithium ion battery becomes indispensable chemical power because of its high energy density, long cycle life, high working voltage and other advantages. Compared with steel shell, aluminum shell lithium ion battery, soft package lithium ion battery has the advantages of light weight, good safety performance, shape is not limited, protection design is simple, and demand grows rapidly.

[0003] In order to guarantee the use safety of lithium ion battery, it is necessary to carry out heat box test experiment to lithium ion battery in advance. In the process of heat box test experiment, the cell packaged in the plastic film aluminum shell may be expanded by heat, which leads to the increase of air pressure in the plastic film aluminum shell, if the high pressure in the plastic film aluminum shell cannot be released in time, battery explosion may occur, which affects the safety of heat box test experiment.

[0004] In the related art, the packaging of the plastic film aluminum shell is relatively firm, which makes it difficult to release the high pressure generated in the plastic film aluminum shell. UTILITY MODEL CONTENTS

[0005] The utility model discloses a plastic film aluminum shell, battery and electronic equipment, which aims at solving the technical problem that the packaging of the existing plastic film aluminum shell is relatively firm, which makes it difficult to release the high pressure generated in the plastic film aluminum shell.

[0006] To achieve the above object, the utility model provides a plastic film aluminum shell for packaging cell, the plastic film aluminum shell comprises:

[0007] The first edge area is arranged on the side of the plastic film aluminum shell close to the cell.

[0008] The second edge area is arranged on the side of the first edge area away from the cell.

[0009] Wherein, the side of the first edge area close to the cell is provided with a first opening part.

[0010] In some embodiments, the side of the second edge area close to the first edge area is provided with a second opening part.

[0011] In some embodiments, the first edge area is provided with a plurality of first opening parts, and the interval distance L1 between the plurality of first opening parts satisfies: 0mm < L1 ≤ 10mm.

[0012] The second edge sealing area is provided with a plurality of second opening parts, and the interval distance L2 between the plurality of second opening parts satisfies: 0mm < L2≤ 10mm.

[0013] In some embodiments, the number of the first opening parts is greater than the number of the second opening parts.

[0014] In some embodiments, the first opening parts and the second opening parts are oppositely arranged.

[0015] In some embodiments, the first opening parts and the second opening parts are deviatedly arranged.

[0016] In some embodiments, the width D1 of the first edge sealing area, the width D2 of the second edge sealing area, the width D3 of the first opening part and the width D4 of the second opening part satisfy: D1+D2-D3-D4>1mm.

[0017] In some embodiments, the interval distance L3 between the first edge sealing area and the second edge sealing area satisfies: 0.1mm≤L3≤1.5mm.

[0018] Correspondingly, the utility model still proposes a battery, include:

[0019] The aluminum-plastic film shell in any one of the above embodiments;

[0020] The battery cell is arranged in the aluminum-plastic film shell;

[0021] The adhesive paper is arranged between the battery cell and the aluminum-plastic film shell, and is used for bonding the battery cell to the aluminum-plastic film shell.

[0022] Correspondingly, the utility model still proposes an electronic equipment, including the battery in the above embodiment.

[0023] Compared with the prior art, the utility model has the beneficial effects that:

[0024] In the technical scheme of the utility model, the aluminum plastic film shell is provided with at least two edge sealing areas, including a first edge sealing area (namely an inner edge sealing area) close to the battery cell and a second edge sealing area (namely an outer edge sealing area) away from the battery cell. When the battery cell in the lithium ion battery abnormally expands due to heat, the pressure in the aluminum plastic film shell increases. Since the first edge sealing area is provided with a first opening part on the side close to the battery cell, the connection strength of the first edge sealing area at the first opening part is relatively weak, so that the high pressure in the aluminum plastic film shell can easily break through the first edge sealing area and be released, thereby reducing the pressure in the aluminum plastic film shell and avoiding the lithium ion battery from smoking, catching fire or even exploding due to high pressure during the hot box test. Since the connection strength of the first edge sealing area at the first opening part is relatively weak, the electrolyte may leak at the first opening part, so the second edge sealing area is arranged on the side of the first edge sealing area away from the battery cell, that is, the second edge sealing area is arranged on the outside of the first edge sealing area. The second edge sealing area can improve the sealing performance of the aluminum plastic film shell and effectively prevent the electrolyte from leaking from the aluminum plastic film shell.

[0025] The aluminum plastic film shell has simple structure and is convenient to process, which not only helps to release the high pressure generated in the aluminum plastic film shell and ensure the safety of the hot box test, but also helps to improve the sealing performance of the aluminum plastic film shell, prevent the electrolyte from leaking from the aluminum plastic film shell, and ensure the safety of the battery.

[0026] The battery using the aluminum plastic film shell can improve the hot box problem and prevent the high pressure generated when the battery abnormally during the hot box test from being released, thereby reducing the risk of the battery smoking, catching fire or even exploding.

[0027] The electronic device using the battery can ensure the safety. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0029] Figure 1 The overall structure of the aluminum plastic film shell provided by the embodiment of the utility model is shown in the sectional view.

[0030] Figure 2 The overall structure of the aluminum plastic film shell provided by another embodiment of the utility model is shown in the sectional view.

[0031] Figure 3The utility model provides an overall structure section view of aluminium -plastic film shell for a further embodiment of the utility model.

[0032] Figure 4 The utility model provides a structure parameter schematic drawing of aluminium -plastic film shell for an embodiment of the utility model.

[0033] Explanation of the attached drawing:

[0034] 10, aluminium -plastic film shell;

[0035] 100, first edge sealing area;

[0036] 110, first opening part;

[0037] 200, second edge sealing area;

[0038] 210, second opening part;

[0039] 20, electric core.

[0040] The utility model aims at realizing, function characteristics and advantages and will be further explained in combination with embodiment, reference to the attached drawing. Specific implementation

[0041] The technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the attached drawings in the embodiment of the utility model, and obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the range of the utility model protection.

[0042] It needs to be explained that if the embodiment of the utility model has involved directionality indication (such as up, down, left, right, front, back……), then the directionality indication is only used to explain the relative position relationship, movement condition etc. between the components in a certain specific posture, if the specific posture changes, then the directionality indication also changes accordingly.

[0043] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one feature. In addition, if "and / or", "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes include "A and / or B", including A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled persons in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the protection scope required by the utility model.

[0044] With the rapid development of modern science and technology, mobile electronic products and electric equipment occupy an increasingly important position in people's daily life. Lithium ion battery has become an indispensable chemical power source because of its high energy density, long cycle life, high working voltage and other advantages. Compared with steel shell and aluminum shell lithium ion battery, soft package lithium ion battery has the advantages of light weight, good safety performance, unlimited shape, simple protection design, etc., and the demand is growing rapidly.

[0045] In order to ensure the safety of lithium ion battery, it is necessary to carry out heat box test experiment (heat box test experiment refers to that the fully charged lithium ion battery is put into a natural or circulating air convection constant temperature and humidity chamber after being stabilized at room temperature, and the test box is heated to 130℃±2℃ at a rate of 5℃ / min±2℃ / min. Keep this temperature, stop the test after 10 minutes, check whether the lithium ion battery is on fire or explosion). During the heat box test experiment of lithium ion battery, the cell packaged in the aluminum plastic film shell may be expanded by heat, resulting in the increase of air pressure in the aluminum plastic film shell. If the high pressure in the aluminum plastic film shell cannot be released in time, the battery explosion may occur, affecting the safety of the heat box test experiment.

[0046] In the related art, the packaging of the aluminum plastic film shell is relatively firm, so that the high pressure generated in the aluminum plastic film shell is not easy to be released.

[0047] Therefore, in order to solve the technical problem that the packaging of the existing aluminum plastic film shell 10 is relatively firm, resulting in that the high pressure generated in the aluminum plastic film shell 10 is not easy to be released, with reference to Figures 1 to 3The utility model discloses an aluminum plastic film shell 10, this aluminum plastic film shell 10 is used for packing electric core 20. The aluminum plastic film shell 10 includes first edge sealing area 100 and second edge sealing area 200, and first edge sealing area 100 and second edge sealing area 200 can realize the sealing of aluminum plastic film shell 10, and first edge sealing area 100 is arranged at the side of aluminum plastic film shell 10 close to electric core 20, and second edge sealing area 200 and first edge sealing area 100 are spaced, and second edge sealing area 200 is arranged at the side of first edge sealing area 100 away from electric core 20. Among them, the side of first edge sealing area 100 close to electric core 20 is provided with first opening part 110. First opening part 110 is the small gap of special shape in first edge sealing area 100, and exemplarily, for example, first opening part 110 can be the small gap of triangular shape, or first opening part 110 can also be the small gap of rectangular shape, or first opening part 110 can also be the small gap of other special-shaped, and the size of first opening part 110 is small, for example, first opening part 110 does not penetrate first edge sealing area 100, to ensure the sealing property of aluminum plastic film shell 10, prevents the situation of electrolyte leakage. First opening part 110 can be arranged at the sealing edge position of first edge sealing area 100, or first opening part 110 can also be arranged at the sealing intermediate position of first edge sealing area 100.

[0048] Specifically, in the embodiment, the aluminum plastic film shell 10 is provided with at least two edge sealing areas, including the first edge sealing area 100 (i.e. the inner edge sealing area) close to the electric core 20 and the second edge sealing area 200 (i.e. the outer edge sealing area) away from the electric core 20. When the electric core 20 in the lithium ion battery abnormally expands due to heat, the pressure in the aluminum plastic film shell 10 will increase. Since the first opening part 110 is arranged on the side of the first edge sealing area 100 close to the electric core 20, the connection strength of the first edge sealing area 100 at the first opening part 110 is relatively weak, so that the high pressure in the aluminum plastic film shell 10 can easily break through the first edge sealing area 100 and be released, thereby reducing the pressure in the aluminum plastic film shell 10 and avoiding the lithium ion battery from smoking, fire or even explosion due to high pressure during the heat chamber test.

[0049] The aluminum-plastic film shell 10 provided by the embodiment has simple structure and is convenient to process, which is beneficial to release the high pressure generated in the aluminum-plastic film shell 10, ensure the safety of the hot box test experiment, and improve the sealing property of the aluminum-plastic film shell 10, prevent the electrolyte from leaking from the aluminum-plastic film shell 10, and ensure the use safety of the battery.

[0050] In other embodiments, the aluminum-plastic film shell 10 can also be provided with a third sealing edge area, a fourth sealing edge area, and the like. The third sealing edge area can be arranged on the side of the second sealing edge area 200 away from the first sealing edge area 100, and the fourth sealing edge area can be arranged on the side of the third sealing edge area away from the second sealing edge area 200. The innermost sealing edge area can be provided with an opening part, and the outermost sealing edge area can not be provided with an opening part. By arranging more layers of sealing edge areas, it is more beneficial to release the high pressure generated in the aluminum-plastic film shell 10 in a layered manner, and it is more beneficial to improve the sealing property of the aluminum-plastic film shell 10.

[0051] In some embodiments, referring to Figures 1 to 3 , the second sealing edge area 200 is provided with a second opening part 210 on the side close to the first sealing edge area 100. Referring to the first opening part 110 in the above embodiment, the second opening part 210 is a small notch with a special shape arranged on the second sealing edge area 200. For example, the second opening part 210 can be a small notch with a triangular shape, or the second opening part 210 can be a small notch with a rectangular shape, or the second opening part 210 can be a small notch with other special shapes. The size of the second opening part 210 is small, for example, the second opening part 210 does not penetrate the second sealing edge area 200, so as to ensure the sealing property of the aluminum-plastic film shell 10 and prevent the electrolyte from leaking. The second opening part 210 can be arranged at the sealing edge position of the second sealing edge area 200, or the second opening part 210 can be arranged at the sealing middle position of the second sealing edge area 200.

[0052] Specifically, in the embodiment, since the connection strength of the second sealing edge area 200 at the second opening part 210 is relatively weak, when the high pressure in the aluminum-plastic film shell 10 breaks through the first sealing edge area 100, it is also easy to break through the second sealing edge area 200, so that the internal and external atmospheres of the aluminum-plastic film shell 10 are in a communication state, thereby being beneficial to completely release the high pressure generated in the aluminum-plastic film shell 10 and eliminate the safety hidden trouble problem caused by the high pressure generated in the aluminum-plastic film.

[0053] In some embodiments, referring to Figures 1 to 4The first edge sealing area 100 is provided with a plurality of first opening portions 110 at intervals, and the interval distance L1 between the plurality of first opening portions 110 satisfies: 0mm < L1≤10mm. The second edge sealing area 200 is provided with a plurality of second opening portions 210 at intervals, and the interval distance L2 between the plurality of second opening portions 210 satisfies: 0mm < L2≤10mm. For example, the value of L1 can be 2mm, 4mm, 6mm, 8mm, 10mm, etc., and the value of L2 can be 2mm, 4mm, 6mm, 8mm, 10mm, etc.

[0054] Specifically, in the embodiment, by providing a plurality of first opening portions 110 at intervals in the first edge sealing area 100, the connection strength of multiple positions of the first edge sealing area 100 can be reduced. Even if a small expansion pressure is generated in the aluminum-plastic film shell 10, the gas can still break through the first edge sealing area 100 to be released, avoiding excessive accumulation of gas in the aluminum-plastic film shell 10 to form high pressure in the aluminum-plastic film shell 10, and ensuring that the safety hazard problem caused by high pressure can be eliminated in time.

[0055] In the first edge sealing area 100, the interval distance between the two adjacent first opening portions 110 should not be too far (i.e., the interval distance between the two adjacent first opening portions 110 should not exceed 10mm). If the interval distance between the two adjacent first opening portions 110 is too far, the positions of the weak connection of the first edge sealing area 100 will be more dispersed, which is not conducive to the gas breaking through the first edge sealing area 100, and cannot reduce the gas pressure in the aluminum-plastic film shell 10 in time, which is not conducive to improving the hot box test experiment.

[0056] Similarly, by providing a plurality of second opening portions 210 at intervals in the second edge sealing area 200, the connection strength of multiple positions of the second edge sealing area 200 can be reduced, thereby reducing the difficulty of the gas in the aluminum-plastic film shell 10 breaking through the second edge sealing area 200, so that the gas in the aluminum-plastic film shell 10 can be released in time, and the adverse effects of high pressure in the aluminum-plastic film shell 10 on the hot box test experiment can be eliminated in time.

[0057] In the second edge sealing area 200, the interval distance between the two adjacent second opening portions 210 should not be too far (i.e., the interval distance between the two adjacent second opening portions 210 should not exceed 10mm). If the interval distance between the two adjacent second opening portions 210 is too far, the positions of the weak connection of the second edge sealing area 200 will be more dispersed, which is not conducive to the gas breaking through the second edge sealing area 200, and cannot reduce the gas pressure in the aluminum-plastic film shell 10 in time, which is not conducive to improving the hot box test experiment.

[0058] In some embodiments, referring to Figures 1 to 4 The number of first opening portions 110 is greater than the number of second opening portions 210.

[0059] Specifically, in the present embodiment, since the first opening part 110 is arranged close to the battery cell 20, i.e. the first opening part 110 is arranged in the inner sealing edge area, when the battery cell 20 expands due to heat and high pressure is generated in the aluminum plastic film shell 10, the gas will first break through the first opening part 110, therefore, arranging a larger number of first opening parts 110 can reduce the difficulty of gas release, ensure that the gas pressure in the aluminum plastic film shell 10 can be reduced in time, avoid the risk of smoking, fire or even explosion of the battery cell 20 during the hot box test experiment, thereby improving the hot box problem.

[0060] Since the second opening part 210 is arranged away from the battery cell 20, i.e. the second opening part 210 is arranged in the outer sealing edge area, and electrolyte is injected into the aluminum plastic film shell 10, arranging a smaller number of second opening parts 210 is beneficial to improve the structural connection strength of the outer sealing edge area, and further improve the sealing performance of the aluminum plastic film shell 10, prevent the electrolyte from leaking from the aluminum plastic film shell 10, and ensure the safety of the battery in use.

[0061] In some embodiments, with reference to Figure 1 , the first opening part 110 and the second opening part 210 are arranged opposite to each other. That is, the first opening part 110 and the second opening part 210 are arranged in alignment.

[0062] Specifically, in the present embodiment, the above design is adopted between the first opening part 110 and the second opening part 210, after the high-pressure gas in the aluminum plastic film shell 10 breaks through the first opening part 110, compared with the gas impact force at other positions, the first opening part 110 still has a relatively strong gas impact force, since the second opening part 210 and the first opening part 110 are arranged in alignment, the high-pressure gas will also break through the second opening part 210, thereby enabling the high-pressure gas to be released in time, improving the pressure reduction efficiency of the aluminum plastic film shell 10, and being beneficial to ensure the safety during the hot box test experiment.

[0063] In some embodiments, with reference to Figure 2 , the first opening part 110 and the second opening part 210 are arranged offset. That is, the first opening part 110 and the second opening part 210 are arranged staggered.

[0064] Specifically, in the present embodiment, the above design is adopted between the first opening part 110 and the second opening part 210, after the high-pressure gas in the aluminum plastic film shell 10 breaks through the first opening part 110, since the second opening part 210 and the first opening part 110 are arranged staggered, and since the connection strength of the aluminum plastic film shell 10 at the non-second opening part 210 is relatively strong, at this time the aluminum plastic film shell 10 can play a blocking role and slowly offset the gas impact force, ensuring the structural integrity of the aluminum plastic film shell 10, thereby slowing down the leakage rate of the electrolyte from the aluminum plastic film shell 10.

[0065] In the embodiment, when the air pressure in the aluminum plastic film shell 10 is high, the high-pressure gas will first break through the first opening part 110, and then break through the second opening part 210, so as to realize the release of the high-pressure gas, and achieve the purpose of reducing the air pressure in the aluminum plastic film shell 10.

[0066] In some embodiments, with reference to Figure 4 , the width D1 of the first edge sealing area 100, the width D2 of the second edge sealing area 200, the width D3 of the first opening part 110, and the width D4 of the second opening part 210 satisfy: D1+D2-D3-D4>1mm. For example, the value of D1+D2-D3-D4 can be 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, etc. In other words, the sum of the remaining width of the width of the first edge sealing area 100 minus the width of the first opening part 110 and the remaining width of the width of the second edge sealing area 200 minus the width of the second opening part 210 is at least greater than 1mm, that is, the overall effective edge sealing width of the aluminum plastic film shell 10 is at least greater than 1mm.

[0067] Specifically, in the embodiment, the overall effective edge sealing width of the aluminum plastic film shell 10 is greater than 1mm, which is beneficial to ensure the sealing performance of the aluminum plastic film shell 10 and effectively prevent the electrolyte from leaking from the aluminum plastic film shell 10.

[0068] In some embodiments, with reference to Figure 4 , the spacing distance L3 between the first edge sealing area 100 and the second edge sealing area 200 satisfies: 0.1mm≤L3≤1.5mm. For example, the value of L3 can be 0.1mm, 0.5mm, 0.8mm, 1.0mm, 1.5mm, etc.

[0069] Specifically, in the embodiment, if the spacing distance between the first edge sealing area 100 and the second edge sealing area 200 is too small, that is, the value of L3 is less than 0.1mm, the first edge sealing area 100 and the second edge sealing area 200 can be connected together, so that the edge sealing strength of the aluminum plastic film shell 10 is increased, which is not conducive to the high-pressure gas breaking through the aluminum plastic film shell 10, not conducive to reducing the air pressure in the aluminum plastic film shell 10, and not conducive to improving the safety during the heat box test experiment. If the spacing distance between the first edge sealing area 100 and the second edge sealing area 200 is too large, that is, the value of L3 is greater than 1.5mm, it will affect the overall cutting edge width of the aluminum plastic film shell 10, further affect the edge folding width of the aluminum plastic film shell 10, and easily lead to the aluminum plastic film shell 10 being too thick, which is not conducive to increasing the energy density of the battery.

[0070] It should be noted that Figures 1 to 4 is a state diagram of the edge sealing area of the aluminum plastic film shell 10, and in the normal state, the first edge sealing area 100 and the second edge sealing area 200 are folded towards the battery cell 20.

[0071] Correspondingly, the utility model discloses another embodiment still provides a battery, the battery includes any one embodiment among above-mentioned aluminium plastic film shell 10, electric core 20 and adhesive paper.Electric core 20 sets up in aluminium plastic film shell 10, can form first sealing edge area 100 and second sealing edge area 200 on aluminium plastic film shell 10 through heat sealing process, realizes the packaging of electric core 20 in aluminium plastic film shell 10.Adhesive paper sets up between electric core 20 and aluminium plastic film shell 10, is used for bonding electric core 20 in aluminium plastic film shell 10.Through adhesive paper, the connection stability between electric core 20 and aluminium plastic film shell 10 can be improved, prevents electric core 20 from happening in aluminium plastic film shell 10 and shakes, guarantees the use safety of battery.

[0072] Specifically, in the embodiment, the battery applying the above-mentioned aluminium plastic film shell 10 can improve the hot box problem, prevent the risk of smoke, fire or even explosion of the battery caused by the high pressure generated when the battery abnormally occurs during the hot box test experiment.

[0073] Correspondingly, the utility model discloses another embodiment still provides an electronic device, and the electronic device includes the battery in the above-mentioned embodiment.Exemplarily, for example, the electronic device can be a mobile phone, a tablet computer, a notebook computer or the like.

[0074] Specifically, in the embodiment, the electronic device applying the above-mentioned battery can guarantee the use safety.

[0075] Thanks to the improvement of the above-mentioned aluminium plastic film shell 10, the battery and the electronic device of the utility model have the same technical effects as the above-mentioned aluminium plastic film shell 10, which will not be repeated here.

[0076] It should be noted that the other contents of the aluminium plastic film shell 10, the battery and the electronic device disclosed by the utility model can be referred to the prior art, which will not be repeated here.

[0077] The above is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by using the utility model specification and the drawings contents, or direct / indirect application in other related technical fields under the utility model concept of the utility model are included in the patent protection range of the utility model.

Claims

1. An aluminum-plastic film case, characterized by, The aluminum-plastic film shell for packaging an electric core comprises: a first edge sealing area arranged on one side of the aluminum-plastic film shell close to the electric core; a second edge sealing area arranged apart from the first edge sealing area, and arranged on a side of the first edge sealing area away from the electric core; wherein the first edge sealing area is provided with a first opening part on the side close to the electric core.

2. The ALPO outer shell according to claim 1, characterized in that, The second edge sealing area is provided with a second opening part on the side close to the first edge sealing area.

3. The ALPO outer shell according to claim 2, wherein, The first edge sealing area is provided with a plurality of first opening parts arranged apart, and the interval distance L1 between the plurality of first opening parts satisfies: 0mm < L1 ≤ 10mm. The second edge sealing area is provided with a plurality of second opening parts arranged apart, and the interval distance L2 between the plurality of second opening parts satisfies: 0mm < L2 ≤ 10mm.

4. The ALPO outer shell according to claim 3, wherein, The number of the first opening parts is greater than the number of the second opening parts.

5. The laminate film overpack of claim 2, wherein The first opening part and the second opening part are oppositely arranged.

6. The laminate film overpack of claim 2, wherein The first opening part and the second opening part are deviatedly arranged.

7. The laminate film overpack of claim 2, wherein The width D1 of the first edge sealing area, the width D2 of the second edge sealing area, the width D3 of the first opening part, and the width D4 of the second opening part satisfy: D1+D2-D3-D4>1mm.

8. The Al-PET lidding film of any one of claims 1 to 7, wherein, The interval distance L3 between the first edge sealing area and the second edge sealing area satisfies: 0.1mm ≤ L3 ≤ 1.5mm.

9. A battery characterized by The aluminum-plastic film shell of any one of claims 1 to 8; The electric core arranged in the aluminum-plastic film shell; The adhesive paper arranged between the electric core and the aluminum-plastic film shell, for bonding the electric core to the aluminum-plastic film shell. The battery of claim 9.

10. An electronic device, characterized by ​

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