Single battery and electronic equipment

Abstract

The utility model discloses a single battery and electronic equipment, and belongs to the technical field of batteries. The single battery has a first direction and a second direction which are intersected, and comprises a packaging piece, an electrode assembly and a circuit board, the packaging piece comprises a main body part and a top sealing part, the top sealing part is arranged at one end of the main body part in the first direction, a deep pit groove and a shallow pit groove which are located in the two opposite sides of the top sealing part in the second direction respectively are defined by the top sealing part and the end face of the main body part, and the top sealing part is bent towards the shallow pit groove. The circuit board is connected with the electrode assembly, and the circuit board and the top sealing part are arranged at the same end of the main body part. The circuit board comprises a board body and a plurality of electronic components, and at least part of the electronic components are arranged on the other side of the first packaging section in the second direction. The length of the circuit board in the first direction of the single battery can be reduced, so that the overall length of the battery is saved, the space utilization rate of the single battery is improved, and the battery capacity is improved.

Description

Technical Field

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

[0002] With the vigorous development of electrochemistry technology, people's requirements for improving battery capacity are getting higher and higher. In order to increase battery capacity, current manufacturers usually optimize the design of the head space of the battery. Among them, the folded-top sealed battery is a relatively popular type of battery currently. In the folded-top sealed battery, the circuit board is arranged at the head of the battery, and the electronic components on the circuit board are likely to occupy most of the space at the head of the battery, resulting in a decrease in the space utilization rate of the battery head. Summary of the Utility Model

[0003] The purpose of the present utility model is to provide a single cell and an electronic device to solve the technical problem that the electronic components of the circuit board occupy most of the space at the head of the battery, resulting in a decrease in the space utilization rate of the battery head.

[0004] On the one hand, the present utility model provides a single cell having intersecting first and second directions. The single cell includes: a packaging member including a main body portion and a top-sealing portion, the top-sealing portion being arranged at one end of the main body portion in the first direction, and the top-sealing portion and the end face of the main body portion defining a deep pit groove and a shallow pit groove respectively located on opposite sides of the top-sealing portion in the second direction, the top-sealing portion being bent towards the shallow pit groove; an electrode assembly arranged in the main body portion; and a circuit board connected to the electrode assembly, the circuit board and the top-sealing portion being arranged at the same end of the main body portion; the circuit board includes a board body and a plurality of electronic components arranged on the board body, and at least some of the electronic components are arranged on the other side of the first encapsulation section in the second direction.

[0005] In addition to one or more of the above-disclosed features, or as an alternative, the top-sealing portion includes a first encapsulation section and a second encapsulation section, the first encapsulation section being connected to the main body portion in the first direction, the second encapsulation section being connected to one side of the first encapsulation section in the second direction, and the first encapsulation section and the second encapsulation section being arranged at an angle; wherein, the first encapsulation section, the second encapsulation section and the main body portion cooperate to enclose the shallow pit groove.

[0006] In addition to one or more of the above-disclosed features, or as an alternative, the single cell further includes: a support member arranged in the shallow pit groove, the support member supporting the second encapsulation section.

[0007] In addition to one or more of the features disclosed above, or alternatively, the single cell further includes: the two surfaces of the main body portion in the second direction are respectively a first surface and a second surface, the first encapsulation section is disposed close to the first surface in the second direction, and the second encapsulation section is located on the side of the first encapsulation section close to the first surface in the second direction; the tab includes a first tab portion and a second tab portion, the first tab portion is connected to the top seal portion through the second tab portion, the first tab portion extends in the second direction, the second tab portion is bent and disposed on the side of the first encapsulation section close to the first surface in the second direction, and the first tab portion is electrically connected to the circuit board.

[0008] In addition to one or more of the features disclosed above, or alternatively, the single cell further includes: a connecting piece, and the circuit board is connected to the tab through the connecting piece.

[0009] In addition to one or more of the features disclosed above, or alternatively, the single cell further includes: an injection-molded protection member that covers the circuit board and the gap between the circuit board and the packaging member.

[0010] In addition to one or more of the features disclosed above, or alternatively, the single cell further includes: a protective tape that is disposed on the packaging member and wraps the circuit board and the top seal portion.

[0011] In addition to one or more of the features disclosed above, or alternatively, the single cell further includes: an insulating member that is disposed at the other end of the main body portion and wraps a part of the main body portion.

[0012] In addition to one or more of the features disclosed above, or alternatively, the single cell further includes: a fixing element that is disposed on the outer surface of the main body portion, and a receiving groove is formed on the surface of the fixing element; and a lifting element that is disposed in the receiving groove.

[0013] On the other hand, further disclosed is an electronic device. In addition to one or more of the features disclosed above, or alternatively, the electronic device includes a load and any one of the above single cells, and the single cell is used to supply power to the load.

[0014] One of the technical solutions in the above technical solutions has the following advantages or beneficial effects: the top seal portion and the electronic components are disposed adjacent to each other on the end face of the battery, reducing the length occupied by the circuit board in the first direction (length direction) of the single cell, that is, saving the occupied space of the electronic components, thereby saving the overall length of the battery, improving the space utilization rate of the single cell, and increasing the battery capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following will, with reference to the drawings, make the technical solutions and other beneficial effects of the present application obvious through a detailed description of the specific embodiments of the present application.

[0016] Figure 1 It is a cross-sectional view of a conventional single cell.

[0017] Figure 2 It is an exploded view of a single cell provided by an embodiment of the present application.

[0018] Figure 3 It is Figure 2 a partial enlarged view of the single cell in

[0019] Figure 4 It is a schematic diagram of the overall structure of a single cell provided by an embodiment of the present application.

[0020] Figure 5 It is a schematic diagram of the structure of a single cell provided by an embodiment of the present application after removing the injection molding protection part or the protective sticker.

[0021] Figure 6 It is Figure 5 a cross-section along the A-A direction Figure 1 .

[0022] Figure 7 It is a schematic diagram of the structure of an electrode assembly provided by an embodiment of the present application.

[0023] Figure 8 It is Figure 5 a cross-section along the A-A direction Figure 2 .

[0024] Reference numerals of the attached drawings:

[0025] Y - the first direction; X - the second direction;

[0026] 1 - packaging part; 11 - main body part; 12 - top sealing part; 13 - side sealing part; 20 - encapsulation part;

[0027] 111 - first surface; 112 - second surface; 121 - first encapsulation section; 122 - second encapsulation section;

[0028] 110 - deep pit groove; 120 - shallow pit groove;

[0029] 31 - electrode assembly; 32 - tab; 321 - first tab part; 322 - second tab part; 33 - battery electrode plate; 34 - separator;

[0030] 4 - circuit board; 41 - board body; 42 - electronic components;

[0031] 5 - support part; 61 - injection molding protection part; 62 - protective sticker; 7 - connecting piece; 8 - insulating part; 9 - fixing element; 91 - accommodation groove; 10 - lifting element. Detailed implementation manners

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is 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 thus cannot be understood as a limitation to the present application. 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 specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0034] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, an electrical connection, or a connection that can communicate with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0035] In the present application, unless otherwise clearly defined and 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" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under", and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0036] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0037] As Figure 1 shown, a conventional single cell includes a package and a circuit board. The package includes a main body portion 11' and a top seal portion 12'. The main body portion has a first surface 111' (which can be called the shallow pit surface) and a second surface 112' (which can be called the deep pit surface). The top seal portion 12' is bent towards the second surface 112', and the top seal portion 12' is fixed by hot melt adhesive. The circuit board includes a board body 41' and electronic components 42' disposed on the board body 41'. Among them, the shallow pit surface and the deep pit surface have relative meanings. Specifically, the circuit board is disposed at the top (also called the head) of the single cell, and the electronic components 42' are disposed on the upper surface of the top seal portion. This results in the circuit board occupying most of the space at the top of the battery, leading to a decrease in the space utilization rate at the top of the battery.

[0038] To solve the above problems, as Figures 2 to 6 shown, the present application provides a single cell having an intersecting first direction Y and a second direction X. The single cell includes a package 1, an electrode assembly 31, and a circuit board 4. The package 1 includes a main body portion 11 and a top seal portion 12. The top seal portion 12 is disposed at one end of the main body portion 11 in the first direction Y, and the top seal portion 12 and the end face of the main body portion 11 define a deep pit groove 110 and a shallow pit groove 120 respectively located on opposite sides of the top seal portion 12 in the second direction X. The top seal portion 12 is bent towards the shallow pit groove 120. The electrode assembly 31 is disposed within the main body portion 11. The circuit board 4 is connected to the electrode assembly 31, and the circuit board 4 and the top seal portion 12 are disposed at the same end of the main body portion 11. The circuit board 4 includes a board body 41 and a plurality of electronic components 42 disposed on the board body 41. At least some of the electronic components 42 are disposed in the deep pit groove 110. In this way, the top seal portion 12 and the electronic components 42 can be disposed adjacent to each other at the end face of the battery, reducing the length occupied by the circuit board 4 in the first direction Y (length direction) of the single cell, that is, saving the occupied space of the electronic components 42, thereby saving the overall length of the battery, improving the space utilization rate of the single cell, and increasing the battery capacity. The following will be described in detail.

[0039] As Figure 2As shown, the single cell has an intersecting first direction Y and second direction X. Optionally, the first direction Y and the second direction X are perpendicular to each other. It can be understood that the first direction Y is the length direction of the single cell, and the second direction X is the thickness direction of the single cell.

[0040] The above-mentioned "perpendicular" refers to a state where the angle formed by a straight line and a straight line, a straight line and a plane, or a plane and a plane is 89° to 91°.

[0041] The above-mentioned single cell can be a lithium-ion secondary battery, and can also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited thereto.

[0042] The above-mentioned single cell can be cylindrical, flat, rectangular or other shapes, etc., but is not limited thereto.

[0043] In one embodiment, as Figure 2 shown, the above-mentioned single cell may include a packaging member 1, an electrode assembly 31, and a circuit board 4.

[0044] As Figures 2 to 3 shown, the packaging member 1 includes a main body portion 11 and a sealing portion 20. The sealing portion 20 includes a top sealing portion 12 and a side sealing portion 13. The top sealing portion 12 is provided at one end (the top end) of the main body portion 11 in the first direction Y, and the side sealing portion 13 is provided at both ends of the top sealing portion 12 in the second direction X.

[0045] As Figure 3 shown, the top sealing portion 12 and the end face of the main body portion 11 define deep pit grooves 110 and shallow pit grooves 120 respectively located on opposite sides of the top sealing portion 12 in the second direction X. The top sealing portion 12 is bent toward the shallow pit groove 120. Among them, the deep pit groove 110 and the shallow pit groove 120 have a relative meaning.

[0046] As Figures 2 to 6 shown, the top sealing portion 12 includes a first sealing section 121 and a second sealing section 122. The first sealing section 121 is connected to the main body portion 11 in the first direction Y, and the second sealing section 122 is connected to one side of the first sealing section 121 in the second direction X ( Figure 6 the right side in

[0047] ). The first sealing section 121 and the second sealing section 122 are arranged at an angle. It can be understood that the first sealing section 121 and the second sealing section 122 are arranged at an acute angle. For example, the angle can be 60°, 70°, 80°, 90°, but is not limited thereto.

[0048] In one embodiment, the single cell further includes: an electrolyte, which is received in the package 1 and infiltrates the electrode assembly 31.

[0049] The electrolyte can be the electrolyte in existing conventional batteries, or a special electrolyte added with compounds, such as: an electrolyte added with a lithium salt additive, but not limited thereto. In this application, no specific limitation is made and it can be specifically selected according to the actual situation as long as the effect of this application is not affected.

[0050] As Figures 6 to 7 shown, the electrode assembly 31 is disposed in the main body 11. The electrode assembly 31 includes: battery electrode plates 33 and a separator 34 arranged in a stacked manner in sequence, and the battery electrode plates 33 and the separator 34 are wound together to form the electrode assembly 31; a tab 32 is connected to the battery electrode plate 33, and at least part of the tab 32 extends to the outside of the package 1 to be electrically connected to the circuit board 4.

[0051] The battery electrode plate 33 can be a positive electrode plate or a negative electrode plate, and the tab 32 can be a positive tab 32 or a negative tab 32. Specifically, when the battery electrode plate 33 is a positive electrode plate, the tab 32 is a positive tab 32; when the battery electrode plate 33 is a negative electrode plate, the tab 32 is a negative tab 32.

[0052] The single cell can be prepared by any known method. For example: the battery electrode plates 33 and the separator 34 are wound in a stacked manner in sequence to form the electrode assembly 31, the electrode assembly 31 is packaged so that the electrode assembly 31 is disposed inside the package 1, the package 1 is sealed at the top in the direction close to the tab 32 of the electrode assembly 31 to form a top seal portion 12, and the two sides of the electrode assembly 31 are sealed to form side seal portions 13 to form an un-injected single cell. Then, a specified amount of electrolyte is injected into the inside of the package 1. After the injection is completed, the gas inside the package 1 is pumped out and sealed in a vacuum environment to prepare the single cell.

[0053] As Figures 2 to 3 shown, the circuit board 4 is connected to the electrode assembly 31, and the circuit board 4 and the top seal portion 12 are disposed at the same end of the main body 11. The circuit board 4 includes a board body 41 and electronic components 42 disposed on the board body 41. The electronic components 42 are disposed on the other side of the first encapsulation section 121 in the second direction X ( Figure 6 the left side in

[0054] As Figure 2 、 Figure 3 and Figure 6As shown, the top sealing part 12 and the electronic component 42 are arranged at the same end of the main body part 11 and are spaced apart in the second direction X (i.e., spaced left and right). In this way, the electronic component 42 is prevented from being stacked on the top sealing part 12, offsetting the height of the electronic component 42, thereby saving the overall length of the battery and leaving more space in the packaging member 1 to accommodate the electrode assembly 31, and further increasing the capacity of the single battery.

[0055] The above-mentioned "spaced arrangement" can be understood as that the top sealing part 12 and the electronic component 42 are arranged adjacent to each other left and right with a gap therebetween.

[0056] Generally, the height of the electronic component 42 is 0.5 - 2 mm. In this embodiment, by arranging the top sealing part 12 and the electronic component 42 at the same end of the battery and spacing them in the second direction X, therefore, the single battery reserves a length space of 0.5 - 2 mm in the length direction for accommodating the electrode assembly 31, thereby increasing the capacity of the single battery.

[0057] The electronic component 42 mentioned in the context can be at least one of a resistor, a capacitor, an inductor, an integrated chip, and a MOS transistor.

[0058] In one embodiment, as Figure 2 , Figure 3 and Figure 6 shown, the first encapsulation section 121, the second encapsulation section 122, and the main body part 11 cooperate to enclose a shallow pit 120.

[0059] In one embodiment, as Figure 6 shown, the single battery further includes a support member 5 disposed in the shallow pit 120. The support member 5 supports the second encapsulation section 122, so as to prevent the top sealing part 12 from being broken when bent, and there is no support after bending resulting in fracture, thereby causing a risk of battery leakage.

[0060] The support member 5 can include hot melt adhesive, glue, adhesive tape, foam, a heat-dissipating material with adhesiveness, etc., but is not limited thereto. Preferably, it is hot melt adhesive. In this application, it is not specifically limited and can be specifically selected according to the actual situation as long as the effect of this application is not affected.

[0061] In one embodiment, the single battery further includes an injection molding protection member 61 covering the circuit board 4 and the gap between the circuit board 4 and the packaging member 1. That is, the injection molding protection member 61 encapsulates the entire head of the single battery, so that the circuit board 4 and the encapsulation part 20 are covered. Among them, the components located within the injection molding protection member 61 can well prevent external corrosion.

[0062] As Figure 2 , Figure 3 and Figure 6As shown, the injection protection member 61 can prevent the electronic component 42 from being directly impacted (e.g., from the battery compartment, etc.). Even if the top end (such as the head) of the battery cell is impacted by the outside world, the injection protection member 61 can provide a buffering effect. For example, the elastic injection protection member 61 can deform when impacted to buffer the impact. In addition, the injection protection member 61 can improve the relative stability between the electronic component 42 and the board body 41. Thus, the injection protection member 61 can reduce the risk of damage and detachment of the electronic component 42.

[0063] The injection protection member 61 can be an injection molded body formed by a low-pressure injection molding process or a potting process. The injection protection member 61 can be made of materials with properties such as insulation, corrosion resistance, waterproof and oxygen resistance, including but not limited to: ABS, PP, PVC, PC, etc. The injection protection member 61 can reduce the corrosion of the components it covers (such as the electronic component 42).

[0064] In one embodiment, as Figure 8 shown, the protective adhesive tape 62 can be used instead of the injection protection member 61. Specifically, the single battery further includes a protective adhesive tape 62, which is disposed on the packaging member 1 and wraps the circuit board 4 and the top sealing portion 12.

[0065] The protective adhesive tape 62 can wrap the circuit board 4 and the top sealing portion 12 by winding to reduce the risk of damage and detachment of the electronic component 42.

[0066] The protective adhesive tape 62 can be made of an insulating material, but is not limited thereto. In this application, no specific limitation is made, and it can be specifically selected according to the actual situation as long as the effect of this application is not affected.

[0067] In one embodiment, as Figure 6 or Figure 8 shown, the two surfaces of the main body portion 11 in the second direction X are respectively the first surface 111 and the second surface 112. The first encapsulation section 121 is close to the first surface 111 in the second direction X, and the second encapsulation section 122 is located on the side of the first encapsulation section 121 closer to the first surface 111 in the second direction X.

[0068] Among them, the first surface 111 can be the deep pit surface of the battery, and the second surface 112 can be the shallow pit surface of the battery.

[0069] In one embodiment, as Figure 6 or Figure 8As shown, the tab 32 includes a first tab portion 321 and a second tab portion 322. The first tab portion 321 is connected to the top seal portion 12 through the second tab portion 322. The first tab portion 321 extends along the second direction X. The second tab portion 322 is bent and is located on the side of the first encapsulation segment 121 closer to the first surface 111 in the second direction X. The first tab portion 321 is electrically connected to the circuit board 4.

[0070] In one embodiment, as Figure 6 or Figure 8 shown, the single cell further includes a connecting piece 7. The circuit board 4 is connected to the tab 32 through the connecting piece 7.

[0071] The connecting piece 7 can be a nickel piece, but is not limited thereto. In this application, no specific limitation is made, and it can be specifically selected according to the actual situation as long as the effect of this application is not affected.

[0072] In one embodiment, as Figure 2 、 Figure 4 、 Figure 5 shown, the single cell further includes an insulating member 8, which is disposed at the other end (bottom end) of the main body portion 11 and wraps part of the main body portion 11.

[0073] Wherein, the insulating member 8 wraps the tail of the battery to protect the tail of the battery, which can improve the impact resistance of the tail and reduce the risk of damage due to impact deformation of the tail.

[0074] In one embodiment, as Figure 2 shown, the single cell further includes a fixing element 9 and a lifting element 10.

[0075] Specifically, the fixing element 9 is disposed on the outer surface of the main body portion 11, and a receiving groove 91 is formed on the surface of the fixing element 9. The lifting element 10 is disposed in the receiving groove 91. Therefore, by providing the fixing element 9 and the lifting element 10, it is convenient for subsequent disassembly and after-sales maintenance of the battery.

[0076] In the embodiments of this application, this application further provides an electronic device, including a load and a single cell as described in any one of the above, and the single cell is used to supply power to the load. For example, the single cell powers 3C products.

[0077] Specifically, the electronic device can be implemented in various specific forms, such as a smart phone, a tablet computer, a notebook computer, a wearable device, a digital camera, etc., or can also be an energy storage device.

[0078] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0079] The above has introduced in detail a single cell and an electronic device provided by an embodiment of the present application. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present application; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A single cell battery, characterized in that: The single cell has a first direction and a second direction intersecting each other, and the single cell comprises: A packaging piece, the packaging piece comprising a main body and a top seal, the top seal being disposed at one end of the main body in the first direction, and the top seal and the end surface of the main body defining a deep pit and a shallow pit respectively located on opposite sides of the top seal in the second direction, the top seal being bent toward the shallow pit; an electrode assembly, disposed in the main body; and A circuit board is connected to the electrode assembly, and the circuit board and the top seal portion are arranged at the same end of the main body; the circuit board includes a board body and a plurality of electronic components arranged on the board body, and at least some of the electronic components are arranged in the deep pit.

2. The single cell according to claim 1, characterized in that: The top sealing portion includes a first packaging segment and a second packaging segment, the first packaging segment is connected to the main body in the first direction, the second packaging segment is connected to one side of the first packaging segment in the second direction, and the first packaging segment and the second packaging segment are arranged at an angle; Wherein, the first packaging section, the second packaging section and the main body cooperate to form the shallow pit.

3. The single cell according to claim 2, characterized in that: Also includes: A support member is disposed in the shallow pit, and the support member supports the second packaging section.

4. The single cell according to claim 2, characterized in that: Also includes: The two surfaces of the main body in the second direction are respectively a first surface and a second surface, the first packaging section is arranged close to the first surface in the second direction, and the second packaging section is located at a side of the first packaging section close to the first surface in the second direction; The pole ear comprises a first pole ear portion and a second pole ear portion, wherein the first pole ear portion is connected to the top seal portion through the second pole ear portion, the first pole ear portion extends along the second direction, the second pole ear portion is bent and located on a side of the first packaging segment close to the first surface in the second direction, and the first pole ear portion is electrically connected to the circuit board.

5. The single cell according to claim 4, characterized in that: Also includes: A connecting piece, through which the circuit board is connected to the tab.

6. The single cell according to claim 1, characterized in that: Also includes: The injection-molded protective component covers the circuit board and the gap between the circuit board and the packaging component.

7. The single cell according to claim 1, characterized in that: Also includes: The protective tape is arranged on the packaging member and wraps the circuit board and the top sealing portion.

8. The single cell according to claim 1, characterized in that: Also includes: The insulating member is arranged at the other end of the main body and wraps a part of the main body.

9. The single cell according to claim 1, characterized in that: Also includes: A fixing element is disposed on the outer surface of the main body, and a receiving groove is formed on the surface of the fixing element; as well as The pulling element is arranged in the accommodating groove.

10. An electronic device, characterized in that: include: A load and the single cell according to any one of claims 1 to 9, wherein the single cell is used to supply power to the load.

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