Battery cell structure, battery assembly and electronic equipment

Abstract

The utility model provides a battery cell structure, a battery assembly and electronic equipment. The battery cell structure comprises an anode part, a cathode part and an isolation structure for dividing the anode part and the cathode part, wherein the isolation structure is coated on the anode part and / or the cathode part.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and particularly to a cell structure, a battery assembly, and an electronic device. Background Art

[0002] To prevent the cathode and anode from contacting each other, the length of the separator will be longer than that of the cathode and anode, that is, after the cell is formed, the separator extends beyond the cathode and anode. The part of the separator that extends beyond the cathode and anode is called "Overhang", also known as "extension part".

[0003] Since the extension part extends outside the cathode and anode, and it is impossible to effectively design the appropriate extension length of various battery extension parts, it will cause the battery to catch fire and explode when impacted, or the energy density becomes low. After being impacted, the phenomenon of cell corrosion occurs in the battery. Utility Model Content

[0004] In a first aspect of this application, a cell structure is provided, including an anode part, a cathode part, and a separator structure for separating the anode part and the cathode part;

[0005] Among them, the separator structure covers the anode part and / or the cathode part.

[0006] Further, the separator structure covers the first surface of the anode part and its two adjacent second surfaces;

[0007] And / or,

[0008] The separator structure covers the third surface of the cathode part and its two adjacent fourth surfaces;

[0009] Among them, the first surface is the surface of the anode part facing the cathode part, and the third surface is the surface of the cathode part facing the anode part.

[0010] Further, the separator structure includes a first separator, and the first separator covers the first surface of the anode part and the two second surfaces adjacent to the first surface;

[0011] And / or,

[0012] The separator structure further includes a second separator, and the second separator covers the third surface of the cathode part and the two fourth surfaces adjacent to the third surface.

[0013] Further, the separator structure includes a separator part disposed in the facing area between the anode part and the cathode part and a covering part extending beyond the facing area, and the covering part covers at least the surfaces of the anode part and / or the cathode part adjacent to the facing area.

[0014] Further, the isolation part includes a third separator disposed between the anode part and the cathode part, and the coating part includes a fourth separator disposed on two adjacent surfaces of the area opposite to the anode part and / or a fifth separator disposed on two adjacent surfaces of the area opposite to the cathode part.

[0015] Further, the isolation structure includes a sixth separator, and the sixth separator includes a first sub-separator and at least one second sub-separator and at least one third sub-separator disposed at opposite ends of the first sub-separator;

[0016] The first sub-separator is disposed in the area opposite to each other between the anode part and the cathode part to form an isolation part;

[0017] At least one second sub-separator is coated on one adjacent surface of the area opposite to the anode part and / or one adjacent surface of the area opposite to the cathode part;

[0018] At least one third sub-separator is coated on the other adjacent surface of the area opposite to the anode part and / or the other adjacent surface of the cathode part.

[0019] Further, the battery cell structure further includes: a sealing film, which is coated on the outside of the anode part, the anode part and the isolation structure.

[0020] Further, the isolation structure includes: a sealing film, a metal layer and a nylon layer which are sequentially stacked.

[0021] The second aspect of the present application provides a battery assembly, which includes an insulating housing and a battery cell structure disposed in the accommodation space of the insulating housing. The battery cell structure includes an anode part, a cathode part and an isolation structure for separating the anode part and the cathode part;

[0022] Wherein, the isolation structure is coated on the anode part and / or the cathode part.

[0023] The third aspect of the present application provides an electronic device, which includes:

[0024] A load circuit and a battery assembly for supplying power to the load circuit. The battery assembly includes a battery cell structure, and the battery cell structure includes an anode part, a cathode part and an isolation structure for separating the anode part and the cathode part;

[0025] Wherein, the isolation structure is coated on the anode part and / or the cathode part. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] By referring to the accompanying drawings and reading the following detailed description, the above and other objects, features and advantages of the exemplary embodiments of the present application will become easy to understand. In the drawings, several embodiments of the present application are shown in an exemplary rather than restrictive manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0027] Figure 1 Schematically shows a schematic diagram of the cell structure in a solution means;

[0028] Figure 2 Schematically shows a schematic diagram of the structures of the cathode part and the anode part;

[0029] Figure 3 Schematically shows a schematic diagram of the first separator covering the anode part;

[0030] Figure 4 Schematically shows a schematic diagram of the first separator and the second separator covering the anode part and the cathode part respectively;

[0031] Figure 5 Schematically shows a schematic diagram of the first type of the second separator covering the cathode part;

[0032] Figure 6 Schematically shows a schematic diagram of the second type of the second separator covering the cathode part;

[0033] Figure 7 Schematically shows a schematic diagram of the covering part, the isolating part and the cathode part;

[0034] Figure 8 Schematically shows a schematic diagram of the third separator, the fifth separator and the cathode part;

[0035] Figure 9 Schematically shows a schematic diagram of the third separator, the fourth separator and the anode part;

[0036] Figure 10 Schematically shows a schematic diagram of the first type of the first sub - separator, the second sub - separator and the third sub - separator and the cathode part and the anode part;

[0037] Figure 11 Schematically shows a schematic diagram of the second type of the first sub - separator, the second sub - separator and the third sub - separator and the cathode part and the anode part;

[0038] Figure 12 Schematically shows a schematic diagram of the third type of the first sub - separator, the second sub - separator and the third sub - separator and the cathode part and the anode part;

[0039] Explanation of the reference numerals in the drawings:

[0040] 1. Isolation structure; 11. First diaphragm; 12. Second diaphragm; 13. Third diaphragm; 14. Fourth diaphragm; 15. Fifth diaphragm; 16. Sixth diaphragm; 161. First sub-diaphragm; 162. Second sub-diaphragm; 163. Third sub-diaphragm; 17. Coating part; 18. Isolation part;

[0041] 2. Anode part; 21. First surface; 22. Second surface; 23. Gold foil;

[0042] 3. Cathode part; 31. Third surface; 32. Fourth surface; 33. Aluminum foil;

[0043] A. Preset distance; B. First thickness; C. Second thickness; D. Invalid area. Specific implementation mode

[0044] The following further describes the implementation mode of the present application in detail in combination with the drawings and embodiments. The detailed description and drawings of the following embodiments are used to exemplarily illustrate the principle of the present application, but cannot be used to limit the scope of the present application. The present application can be implemented in many different forms, not limited to the specific embodiments disclosed in the text, but including all technical solutions falling within the scope of the claims.

[0045] These embodiments are provided by the present application to make the present application thorough and complete, and to fully express the scope of the present application to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, the components of materials, numerical expressions and values described in these embodiments should be interpreted as merely exemplary, rather than as limitations.

[0046] It should be noted that in the description of the present application, unless otherwise stated, the meaning of "a plurality" is greater than or equal to two; the orientation or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are only for the convenience of describing the present application 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 therefore cannot be understood as a limitation to the present application. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

[0047] In addition, the "first", "second" and similar terms used in the present application do not represent any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. Words such as "including" or "containing" mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements.

[0048] Embodiment 1

[0049] As shown Figure 3-12 in FIG. 1, Embodiment 1 of the first aspect of the present application provides a first cell structure, which includes: a cathode part 3 and a separator structure 1 for separating an anode part 2 and the cathode part 3; wherein, the separator structure 1 covers the anode part 2 and / or the cathode part 3.

[0050] Specifically, the cathode part 3 and the anode part 2 can be metal electrodes used in conventional batteries. The separator structure 1 can be a diaphragm or a microporous membrane, and no specific limitation is imposed thereon. The separator structure 1 is disposed between the cathode part 3 and the anode part 2, and the three can be stacked and cycled, that is, the cathode part 3 and the anode part 2 are alternately stacked, and the separator structure 1 is disposed therebetween to form a sheet-like cell structure. The separator structure 1 can cover both ends of the cathode part 3 and / or the anode part 2 in the length direction. In this embodiment, the strip-shaped cathode part 3, anode part 2, and separator structure 1 can be wound to form a cylindrical wound cell, and the separator structure 1 covers both sides of the anode part 2 and / or the cathode part 3 in the width direction. The way the separator structure 1 covers the cathode part 3 and the anode part 2 can be that the protruding part reserved by the separator structure 1 covers the cathode part 3 and / or the anode part 2.

[0051] As shown Figure 1 in FIG. 2, a solution is that the separator structure 1 extends out of the cathode part 3 and the anode part 2. The extended distance of the separator structure 1 is the extended length. If the extended length is long, the ineffective area D of the cell will be large, and its energy density will become small. And because the extended length is too long, when impacted, the separator structure 1 will be damaged, resulting in the film corrosion phenomenon of the cell and reducing the cell life. If the extended length is short, when impacted, the cathode part 3 and the anode part 2 will be short-circuited due to contact, thereby causing explosion and fire. In this embodiment, both the cathode part 3 and the anode part 2 are defined in the discharge state of the cell.

[0052] As shown Figure 3 in FIG. 3, the present application uses the separator structure 1 to cover the anode part 2 and / or the cathode part 3, which can effectively increase the energy area of the cell, reduce its ineffective area D, and increase its energy density. At the same time, a small part of the separator structure 1 is outside the cathode part 3 and the anode part 2, which can effectively prevent the contact between the cathode and the anode after being impacted, thereby avoiding the short-circuit phenomenon of the cell structure.

[0053] In some embodiments, the isolation structure 1 covers the first surface 21 of the anode portion 2 and its two adjacent second surfaces 22; and / or, the isolation structure 1 covers the third surface 31 of the cathode portion 3 and its two adjacent fourth surfaces 32; wherein, the first surface 21 is the surface of the anode portion 2 facing the cathode portion 3, and the third surface 31 is the surface of the cathode portion 3 facing the anode portion 2.

[0054] As Figure 2 shown, specifically, the two opposite surfaces of the anode portion 2 and the cathode portion 3 are the first surface 21 and the third surface 31 respectively. The two end faces of the anode portion 2 along the width direction of the first surface 21 are the two second surfaces 22, and the two end faces of the cathode portion 3 along the width direction of the second surface 22 are the two fourth surfaces 32 respectively. In this embodiment, the width directions of the first surface 21 and the third surface 31 can both be the length direction of the cylindrical structure wound battery cell.

[0055] As Figure 2 、 3 shown, for the covering of the isolation structure 1 on the second surface 22, it can be that the separator in the isolation structure 1 covers the first surface 21 and the second surface 22, and the edge of the separator extends to the surface of the anode portion 2 opposite to the first surface 21. There is a gold foil 23 forming a current collector on this surface, and the extended portion of the separator can cover the gold foil 23. Similarly, for the covering of the isolation structure 1 on the fourth surface 32, it can be that the separator in the isolation structure 1 covers the third surface 31 and the fourth surface 32, and the edge of the separator extends to the surface of the cathode portion 3 opposite to the third surface 31. There is an aluminum foil 33 forming a current collector on this surface, and the extended portion of the separator can cover the aluminum foil 33.

[0056] In some embodiments, the isolation structure 1 includes a first separator 11, and the first separator 11 covers the first surface 21 of the anode portion 2 and the two second surfaces 22 adjacent to the first surface 21; and / or the isolation structure 1 further includes a second separator 12, and the second separator 12 covers the third surface 31 of the cathode portion 3 and the two fourth surfaces 32 adjacent to the third surface 31.

[0057] As Figure 4 shown, specifically, in high energy density and high power application scenarios, the first separator 11 and the second separator 12 can be arranged between the cathode portion 3 and the anode portion 2 at the same time. The first separator 11 covers the first surface 21 and the two second surfaces 22 of the anode portion 2, and the second separator 12 covers the third surface 31 and the two fourth surfaces 32 of the cathode portion 3, further preventing a short circuit between the cathode portion 3 and the anode portion 2, which may cause a serious fire in the battery cell of the high energy density and high power battery.

[0058] AsFigure 2 , 5 As shown, in this embodiment, a single layer of separator, i.e., the first separator 11 or the second separator 12, can be used as the isolation structure 1. When the battery cell structure is disposed in a high-voltage battery and / or the battery is in a high-temperature environment, in a high-voltage battery, the cathode material is often at a relatively high potential and is prone to side reactions with the electrolyte, resulting in electrolyte decomposition. At this time, it is necessary to protect the cathode part 3. At the same time, when operating in a high-temperature environment, the cathode material is more likely to chemically react with the electrolyte, leading to performance degradation. Wrapping the fourth surface 32 of the cathode part 3 with the second separator 12 can effectively enhance the protection of the cathode and reduce external damage to the cathode. For a battery using lithium metal as the anode and / or a low-voltage battery, the first separator 11 can be used to protect the anode part 2. The lithium metal anode has a high theoretical capacity, but lithium dendrites are easily formed during the charge and discharge process. The first separator 11 can block the lithium dendrites, prevent the lithium dendrites from contacting the cathode part 3 and causing a short circuit, or prevent the lithium dendrites from scattering to the cathode part 3 due to external impact and causing a short circuit in the battery cell.

[0059] As Figure 6 shown, in some embodiments, the isolation structure 1 has a preset distance A. It can be understood that the projection of the first separator 11 onto the second surface 22 covers the entire second surface 22, but the first separator 11 has a preset distance A in the direction perpendicular to the second surface 22. Similarly, the second separator 12 structure can also have a preset distance A from the fourth surface 32. The projection of the second separator 12 onto the fourth surface 32 covers the entire fourth surface 32, and the second separator 12 has a preset distance A in the direction perpendicular to the fourth surface 32. The preset distance A can be between 0.2 - 0.5 mm. The specific value of the preset distance A is not limited and can be selected according to the battery design scheme. When the battery size is large, the preset distance A can be selected as 0.5 mm. When the battery size is small, the preset distance A can be selected as 0.2 mm, and no specific limitation is imposed. Setting the preset distance A can avoid the problem of micro-short circuit caused by the burrs of the current collector piercing the separator.

[0060] In some embodiments, the battery cell structure further includes: a sealing film, which is wrapped around the outside of the anode part 2, the anode part 2, and the isolation structure 1.

[0061] Specifically, the encapsulating film may be composed of a polypropylene film, a metal layer, and a nylon layer stacked together. The polypropylene film covers the cathode part 3, the anode part 2, and the separator structure. The encapsulating film can effectively reduce the damage to the cathode part 3, the anode part 2, and the separator structure caused by external impacts. In a conventional battery cell structure, the metal layer often uses aluminum. When the polypropylene film is damaged due to impact, a reaction occurs between the anode part 2 and the metal layer, resulting in the generation of gas, which causes the battery cell structure to expand. When selecting the second separator 12, the second separator 12 can cover the two second surfaces 22 adjacent to the anode part 2, effectively isolating the contact between the aluminum and the anode part 2 when the encapsulating film is damaged, and avoiding the expansion of the battery cell.

[0062] For the isolation structure 1 to cover the anode part 2 and / or the cathode part 3, a hemming device can be added in the conventional winding process. The structure of the hemming device is similar to that of a conventional fabric sewing machine's hemming device. This hemming device can be a device for changing the direction of the tension surface, and can be a guiding structure composed of two metal sheets. By changing the tension direction, the isolation structure 1 can cover the anode part 2 and / or the cathode part 3 during the process of winding into a cylindrical structure.

[0063] Embodiment 2

[0064] The second aspect of the present application provides a second battery cell structure in Embodiment 2, wherein the isolation structure 1 includes an isolation part 18 disposed in the facing area between the anode part 2 and the cathode part 3 and a covering part 17 extending out of the facing area. The covering part 17 covers at least the surfaces of the anode part 2 and / or the cathode part 3 adjacent to the facing area.

[0065] As Figure 2 , 7 shown, specifically, the facing area between the anode part 2 and the cathode part 3 is the first surface 21, simply referred to as the facing area of the anode part 2. The facing area between the cathode part 3 and the anode part 2 is the third surface 31, simply referred to as the facing area of the cathode part 3. The isolation structure 1 may be composed of multiple separator films spliced together. Different separator films serve as the isolation part 18 and the covering part 17 in the isolation structure 1. The covering part 17 covering at least the surfaces of the anode part 2 and / or the cathode part 3 adjacent to the facing area can be understood as the covering part 17 covering the surfaces of the anode part 2 and / or the cathode part 3 adjacent to the facing area, without specific limitations.

[0066] In some embodiments, the isolation part 18 includes a third separator 13 disposed between the anode part 2 and the cathode part 3, and the covering part 17 includes a fourth separator 14 disposed on two surfaces adjacent to the facing area of the anode part 2 and / or a fifth separator 15 disposed on two surfaces adjacent to the facing area of the cathode part 3.

[0067] As Figure 8 , 9 shown, specifically, the third separator 13 disposed between the cathode part 3 and the anode part 2 as the isolation part 18 can be the separator in a conventional battery cell structure, and no specific limitation is imposed thereon. The main function of the fourth separator 14 disposed on two surfaces adjacent to the facing area of the anode part 2 and the fifth separator 15 disposed on two surfaces adjacent to the facing area of the cathode part 3 is to prevent the cathode part 3 and the anode part 2 from contacting and causing a short-circuit phenomenon. Actually, they do not participate in the operation of the battery cell. Therefore, the fourth separator 14 and the fifth separator 15 can be replaced with separators having a smaller thickness, or separators having the same thickness as the first separator 11 but a smaller thickness. It can be understood that the third separator 13 is at a first thickness B, while the fourth separator 14 and the fifth separator 15 are at a second thickness C, where the first thickness B is greater than the second thickness C. While preventing the cathode part 3 and the anode part 2 from contacting and short-circuiting, the ineffective area D of the battery cell is further reduced.

[0068] In this embodiment, the fourth separator 14 and / or the fifth separator 15 can be the same separator as the third separator 13. Taking the fourth separator 14 as an example, during the winding process of the battery cell, the edge of the separator structure is closed, so that the fourth separator 14 covers the two second surfaces 22, and finally a battery cell in a cylindrical structure is formed. Subsequently, both ends of the cylindrical structure are polished or cut to make the thickness of the fourth separator 14 and / or the fifth separator 15 at both ends thinner. In this way, the process flow is simple and the ineffective area D can be effectively reduced. In this embodiment, the first thickness B of the isolation part 18 can be 12 μm, and the second thickness C of the covering part 17 can be 7 μm. For the rest of the features of the second embodiment of the present application, they are the same as those of the first embodiment. Specifically, reference can be made to the description in the first embodiment, and details are not described herein again.

[0069] Embodiment Three

[0070] Embodiment 3 of the first aspect of the present application provides a third cell structure. Among them, the isolation structure 1 includes a sixth separator 16, and the sixth separator 16 includes a first sub-separator 161, and at least one second sub-separator 162 and at least one third sub-separator 163 provided at opposite ends of the first sub-separator 161; the first sub-separator 161 is disposed in the facing area between the anode part 2 and the cathode part 3 to form an isolation part 18; at least one second sub-separator 162 covers one surface adjacent to the facing area of the anode part 2 and / or one surface adjacent to the facing area of the cathode part 3; at least one third sub-separator 163 covers the other surface adjacent to the facing area of the anode part 2 and / or the other surface adjacent to the cathode part 3.

[0071] Specifically, the first sub-separator 161 is not specifically limited and can be equivalent to the third separator 13 in Embodiment 2 of the present application. The number of the second sub-separator 162 and the third sub-separator 163 can be one or two, and no specific limitation is imposed on it. The first sub-separator 161, the second sub-separator 162, and the third sub-separator 163 can be different separators, or the same separator can be divided into at least one second sub-separator 162 or third sub-separator 163 during the production process, and no specific limitation is imposed on it.

[0072] As Figure 10 shown, when the number of both the second sub-separator 162 and the third sub-separator 163 is two, the two second sub-separators 162 respectively cover a second surface 22 of the anode part 2 and a fourth surface 32 adjacent to the second surface 22. The two third sub-separators 163 respectively cover the other second surface 22 of the anode part 2 and a fourth surface 32 adjacent to the other second surface 22. Such a setting can ensure that the first sub-separator 161 between the cathode part 3 and the anode part 2 has a smaller thickness, and at the same time covers both the cathode part 3 and the anode part 2. The internal resistance of the cell structure is reduced, the structure is more compact, and at the same time, it can more effectively prevent a short circuit between the cathode part 3 and the anode part 2.

[0073] As Figure 11 、 12 shown, in this embodiment, the number of both the second sub-separator 162 and the third sub-separator 163 can be set to one. The second sub-separator 162 covers the second surface 22 of the anode part 2, and the third sub-separator 163 covers the fourth surface 32 of the cathode part 3, or the second sub-separator 162 covers the fourth surface 32 of the cathode part 3, and the third sub-separator 163 covers the second surface 22 of the anode part 2. In this way, the cathode and the anode can be protected simultaneously to improve the overall performance and safety of the cell. For the remaining features of Embodiment 3 of the present application, they are the same as those of Embodiment 1 and Embodiment 2. Specifically, reference can be made to the description in Embodiment 1, and details are not described here again.

[0074] Embodiment 4

[0075] Embodiment 4 of the second aspect of the present application provides a battery assembly, which includes: an insulating housing and a battery cell structure disposed in the accommodation space of the insulating housing. The battery cell structure includes an anode portion 2, a cathode portion 3, and a separation structure 1 for separating the anode portion 2 and the cathode portion 3; wherein, the separation structure 1 covers the anode portion 2 and / or the cathode portion 3.

[0076] Specifically, the structure of the insulating housing is not specifically limited. It can be the insulating housing of a conventional battery pack, and the accommodation space enclosed therein is used to dispose the battery cell structure. The battery cell structure can be the battery cell structure described in any one of Embodiments 1 to 3 of the present application. For specific reference, please refer to the descriptions in Embodiments 1 to 3, and details will not be elaborated here.

[0077] In the battery assembly provided in Embodiment 4 of the second aspect of the present application, the separation structure 1 provided in the battery cell structure covers the anode portion 2 and / or the cathode portion 3, which can effectively increase the energy area of the battery assembly and increase its energy density. At the same time, a small part of the separation structure 1 is outside the cathode portion 3 and the anode portion 2, which can effectively prevent the contact between the cathode and the anode after being impacted, thereby avoiding the short-circuit phenomenon of the battery assembly.

[0078] Embodiment 5

[0079] Embodiment 5 of the third aspect of the present application provides an electronic device, which includes: a load circuit and a battery assembly for supplying power to the load circuit. The battery assembly includes a battery cell structure, and the battery cell structure includes an anode portion 2, a cathode portion 3, and a separation structure 1 for separating the anode portion 2 and the cathode portion 3; wherein, the separation structure 1 covers the anode portion 2 and / or the cathode portion 3.

[0080] Specifically, the load circuit can be electronic components such as a CPU, a motherboard, etc., and no specific limitation is imposed on it. The battery assembly in this embodiment can be the battery assembly in Embodiment 4 of the present application. For specific reference, please refer to the description in Embodiment 4, and details will not be elaborated here.

[0081] In the electronic device provided in Embodiment 5 of the third aspect of the present application, the battery assembly is provided with a battery cell structure in which a small part of the separation structure 1 is outside the cathode portion 3 and the anode portion 2, and can effectively prevent the contact between the cathode and the anode after being impacted, avoiding the short-circuit phenomenon of the battery assembly, effectively improving the service life of the electronic device, and increasing the safety of the electronic device.

[0082] It should also be noted that in the description of this application, unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. When it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0083] All terms used in this application have the same meanings as understood by those of ordinary skill in the art to which this application pertains, unless otherwise specifically defined. It should also be understood that terms defined in, for example, a general dictionary should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such here.

[0084] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification.

[0085] The above are only specific embodiments of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed in this application can easily think of changes or substitutions, which should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims described.

Claims

1. A battery cell structure, characterized in that, It includes an anode part, a cathode part, and an isolation structure for separating the anode part and the cathode part; Wherein, the isolation structure covers the anode part and / or the cathode part.

2. The cell structure according to claim 1, wherein The isolation structure covers the first surface of the anode part and its two adjacent second surfaces; and / or, The isolation structure covers the third surface of the cathode part and its two adjacent fourth surfaces; Wherein, the first surface is the surface of the anode part facing the cathode part, and the third surface is the surface of the cathode part facing the anode part.

3. The battery cell structure according to claim 1 or 2, characterized in that, The isolation structure includes a first separator, and the first separator covers the first surface of the anode part and the two second surfaces adjacent to the first surface; and / or, The isolation structure further includes a second separator, and the second separator covers the third surface of the cathode part and the two fourth surfaces adjacent to the third surface.

4. The cell structure according to claim 1, wherein The isolation structure includes an isolation part disposed in the facing area between the anode part and the cathode part and a covering part extending out of the facing area, and the covering part covers at least the surfaces of the anode part and / or the cathode part adjacent to the facing area.

5. The cell structure according to claim 4, characterized in that, The isolation part includes a third separator disposed between the anode part and the cathode part, and the covering part includes a fourth separator disposed on two surfaces adjacent to the facing area of the anode part and / or a fifth separator disposed on two surfaces adjacent to the facing area of the cathode part.

6. The cell structure according to claim 4, characterized in that, The isolation structure includes a sixth separator, and the sixth separator includes a first sub-separator and at least one second sub-separator and at least one third sub-separator disposed at opposite ends of the first sub-separator; The first sub-separator is disposed in the facing area between the anode part and the cathode part to form the isolation part; The at least one second sub-separator covers one surface adjacent to the facing area of the anode part and / or one surface adjacent to the facing area of the cathode part; The at least one third sub-separator covers the other surface adjacent to the facing area of the anode part and / or the other surface adjacent to the cathode part.

7. The cell structure according to claim 1, wherein The cell structure is a cylindrical structure formed by winding the anode part and the cathode part around each other.

8. The cell structure according to claim 1 or 7, characterized in that, It further includes: A sealing film, and the sealing film covers the outside of the anode part, the anode part, and the isolation structure.

9. A battery component, characterized in that, It includes an insulating housing and a cell structure disposed in the accommodation space of the insulating housing, and the cell structure includes an anode part, a cathode part, and an isolation structure for separating the anode part and the cathode part; Wherein, the isolation structure covers the anode part and / or the cathode part.

10. An electronic device, characterized in that, It includes a load circuit and a battery assembly for supplying power to the load circuit, and the battery assembly includes a cell structure, and the cell structure includes an anode part, a cathode part, and an isolation structure for separating the anode part and the cathode part; Wherein, the isolation structure covers the anode part and / or the cathode part.

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