CN218513503U - Battery and electric device - Google Patents

Abstract

The application provides a battery and an electric device, wherein the battery comprises a battery cell body and a packaging part for packaging the battery cell body; the packaging part comprises a top sealing edge and side sealing edges arranged at two opposite sides of the battery cell body; the top seal tiling sets up in the first terminal surface of electric core body along the first direction, and the side seal tiling of first tip along the first direction sets up in first terminal surface. The occupied space of packaging part is big is solved in this application for the unit volume capacity of electric core body reduces, and then has reduced battery energy density's problem.

Description

Battery and electric device

Technical Field

The present application relates to the field of electrical storage elements, and more particularly to batteries and powered devices.

Background

The battery is a component capable of converting chemical energy into electric energy, and is widely applied to daily life and work.

The battery comprises a battery core body and a packaging part, wherein the packaging part is coated on the outer side of the battery core body so as to package the battery core body, and therefore the battery core body is protected. However, the volume of the battery is limited, and the space occupied by the packaging part is large, so that the unit volume capacity of the battery cell body is reduced, and the energy density of the battery is further reduced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a battery and a power consumption device for it is big to solve the shared space of packaging part, makes the unit volume capacity of electric core body reduce, and then has reduced the problem of battery energy density.

In the battery provided by the embodiment of the application, the package part comprises a top sealing edge and side sealing edges arranged at two opposite sides of the battery cell body; the top sealing edge is flatly laid on a first end face of the battery cell body along the first direction; the side seal edge is tiled along the first end portion in the first direction and arranged on the first end face.

Through adopting above-mentioned technical scheme, in the first terminal surface of electricity core body, through all tiling the first end with top banding and side banding and set up in the first terminal surface of electricity core body for the first end of side banding and top banding need not to follow the outside first terminal surface that stretches out of first direction. Therefore, compared with a battery in the related art, the packaging part of the battery provided by the embodiment of the application does not need to occupy the space of the battery along the first direction, and the occupied space of the packaging part is small, so that the length of the battery cell body along the first direction is increased, the unit volume capacity of the battery cell body is increased, and the energy density of the battery is improved.

In some possible embodiments, the first ends of the top and side seals are disposed in the same plane;

a gap is provided between the first end of the side seal and the top seal in a plane in which the first ends of the top and side seals lie.

In some possible embodiments, the first end face is provided with an adhesive layer by which the first end portions of the top and/or side seals are connected to the first end face.

In some possible embodiments, the side seal has a gap between a first end thereof and the top seal.

In some possible embodiments, the length of the first end of the side seal edge is greater than or equal to 0.6 mm and less than or equal to 1.5 mm.

In some possible embodiments, the battery further comprises a tab, wherein the tab comprises a bending part and an extending part;

the bending portion is connected with the battery cell body, the bending portion is tiled on the first end face, the extending portion is connected with the bending portion, and the extending direction of the extending portion is perpendicular to the first end face.

In some possible embodiments, the first end surface is provided with a protection plate, the protection plate covers at least part of the top sealing edge and at least part of the side sealing edge, and a plane of the protection plate is perpendicular to the first direction.

In some possible embodiments, the protection plate includes a protection plate covering a surface of the bent portion away from the first end surface.

In some possible embodiments, the package further includes a package main body, and the package main body is wrapped around an outer circumferential surface of the cell body along the first direction;

one end of the packaging body in the first direction is connected with the top sealing edge, and two sides of the packaging body in the first direction are connected with the side sealing edges.

In some possible embodiments, a plane perpendicular to the first direction is taken as a cross section, a fixed end of the side sealing edge is connected to the package main body, and a movable end of the side sealing edge is bent toward the cell body.

The embodiment of the application also provides an electric device which comprises the battery.

Through adopting above-mentioned technical scheme, in the first terminal surface of electric core body, through all tiling the first end with the top banding and the side banding and setting up in the first terminal surface of electric core body for the first end of side banding and top banding need not to follow the outside first terminal surface that stretches out of first direction. Therefore, compared with a battery in the related art, the packaging part of the battery provided by the embodiment of the application does not need to occupy the space of the battery along the first direction, the occupied space of the packaging part is small, the length of the battery cell body along the first direction is increased, the unit volume capacity of the battery cell body is increased, and the energy density of the battery is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Fig. 1 is a schematic structural diagram of a battery provided in an embodiment of the present application;

fig. 2 is a schematic diagram of a battery structure from another perspective according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a battery in an unfolded state of a package according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a battery in which a side sealing edge is attached to a cell body according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a notched battery according to an embodiment of the present disclosure, in an expanded state, with a notch of a linear shape;

fig. 6 is a schematic structural diagram of a battery with a trapezoidal notch and a first packaging part in an unfolded state according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a notch battery with a triangular notch and a first packaging part in an unfolded state according to an embodiment of the present application;

fig. 8 is a schematic structural view of a battery with a circular arc notch and a first packaging part in an unfolded state according to an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of a battery with a rectangular notch and a first packaging part in an unfolded state according to an embodiment of the present application.

Description of reference numerals:

100. a cell body; 110. a first end face; 111. a groove; 112. a gap; 200. a tab; 210. a bending part; 220. an extension portion; 300. a package; 310. a package body; 311. a first package portion; 312. a second encapsulation section; 320. sealing the edge at the top; 330. side edge sealing; 340. a notch; 400. a protection plate; 410. and (4) protecting the sheet.

With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

Just as background art, the battery includes electric core body and packaging piece, and electric core body is provided with the utmost point ear of outside extension along the first terminal surface of first direction, and the packaging piece cladding is in electric core body's the outside to with electric core body encapsulation, thereby reach the effect of protection electric core body. The packaging part is including the holding district that is used for sealed electric core body and being located the holding district encapsulation limit all around, wherein, and the encapsulation limit corresponding to the first terminal surface of electric core body is usually called the top banding, and perpendicular to top banding is located the holding district both sides and is usually called two side banding. The extending direction of the top seal edge is consistent with the extending direction of the pole lug, and the top seal edge is vertically arranged on the first end face of the battery cell body. The space occupied by the top sealing edge in the battery is large, the occupied space of the battery cell body in the battery is reduced, and the size of the battery cell body is reduced, so that the unit volume capacity of the battery cell body is reduced, and the energy density of the battery is reduced.

In order to solve the technical problem, an embodiment of the present application provides a battery and an electric device, include the electric core body that sets up along the first direction to and the packaging part of encapsulation electric core body, in the first terminal surface of electric core body, set up in the first terminal surface of electric core body through the first end with the first end of top banding and side banding all tiling, make the first end of side banding and top banding need not to follow the outside first terminal surface that stretches out of first direction. Therefore, compared with a battery in the related art, the packaging part of the battery provided by the embodiment of the application does not need to occupy the space of the battery along the first direction, the occupied space of the packaging part is small, the length of the battery cell body along the first direction is increased, the unit volume capacity of the battery cell body is increased, and the energy density of the battery is improved.

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application, as detailed in the appended claims.

The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.

Referring to fig. 1 and 2, a battery provided in an embodiment of the present application includes a cell body 100 disposed along a first direction, and a package 300 that packages the cell body 100; the package 300 may encapsulate the battery cell body 100 to protect the battery cell body 100 and prevent the battery cell body 100 from being damaged during transportation or use of the battery, so as to prevent the battery from being used normally.

Exemplarily, the molding material of the package can be an aluminum-plastic film, and the aluminum-plastic film has a relatively small thickness and a relatively light weight, so that the weight of the battery can be effectively reduced, and the lightweight design of the battery is facilitated. Moreover, the shape design of the aluminum plastic film is flexible, the aluminum plastic film has better flexibility and plasticity, the design requirements of different shapes and specifications of the battery can be met, and the flexibility of the shape design of the battery is improved.

Referring to fig. 1 and 2, the battery further includes a tab 200, where the tab 200 is disposed on the first end surface 110 of the cell body 100 and electrically connected to the cell body 100, the tab 200 is capable of drawing out a current in the cell body 100, and when the battery is in use, the tab 200 may be connected to a circuit structure of an electronic device to provide a power supply for the electronic device. Specifically, the tab 200 may extend from the first end surface 110 of the battery cell body 100 to the outside of the battery cell body 100, and when the package member 300 packages the battery cell body 100, the tab 200 partially extends out of the package member 300.

Illustratively, the direction from the cell body 100 to the tab 200 is a first direction of the cell body 100, that is, a height direction of the cell body 100, for example, a y direction in the figure. The direction perpendicular to the height direction is the length direction of the cell body 100, such as the x direction in the figure. The direction perpendicular to both the height direction and the length direction is the thickness direction of the battery cell body 100, such as the z direction in the drawing.

In some possible embodiments, the first end surface 110 of the cell body 100 may be formed with a groove 111, and the groove 111 receives the tab 200, or the first end surface 110 of the cell body 100 may also be perpendicular to the height direction of the cell body 100, which is not further limited in this embodiment of the application.

Referring to fig. 1 and 2, in some possible embodiments, the package 300 includes a package main body 310, a top sealing edge 320, and side sealing edges 330 disposed at two opposite sides of the cell body 100; the package main body 310 is wrapped around the outer circumferential surface of the battery cell body 100 along the y direction to protect the battery cell body 100; one end of the package body along the y-direction is connected to the top seal 320 and both sides of the package body along the y-direction are connected to the side seals 330. For example, the top sealing edge 320 and the side sealing edge 330 may be integrally formed on the package body, so that the structure of the package 300 is more stable.

The top sealing edge 320 and the side sealing edge 330 refer to structures formed when edges of the package 300 are sealed along the periphery of the battery cell body 100, the top sealing edge 320 refers to a sealing edge formed on the first end surface 110 of the battery cell body 100, and at least a portion of the tab 200 extends to the outside of the top sealing edge 320 along the y direction. The side sealing edges 330 refer to sealing edges respectively located on two opposite sides of the cell body 100 along the y direction, that is, the sealing edges are disposed at two ends of the cell body 100 along the x direction, that is, the side sealing edges 330 are located at two opposite sides of the top surface, and the sealing edges 330 are also located at two opposite sides of the top sealing edge 320.

For example, after the battery cell body 100 is sealed circumferentially along the y direction by the package main body 310, the first end portions of the top sealing edge 320 and the side sealing edge 330 are bent and laid on the first end surface 110 of the battery cell body 100, so that the battery can be obtained without changing the packaging process and the packaging equipment, the packaging size and the like of the package 300 are not changed, the original packaging effect is not damaged, and the reliability and stability of the package 300 can be effectively ensured.

Referring to fig. 1 and 2, in some possible embodiments, the top sealing edge 320 is disposed flat on the first end surface 110 of the cell body 100 along the y direction, for example, the top sealing edge 320 may be folded toward the first end surface 110 of the cell body 100, so that the top sealing edge 320 is perpendicular to the y direction and is disposed flat on the first end surface 110; the side sealing edge 330 extends along the y direction, and the first end of the side sealing edge 330 is folded towards the first end surface 110 of the battery cell body 100 and is tiled on the first end surface 110, so that the first end of the side sealing edge 330 and the top sealing edge 320 do not need to extend out of the first end surface 110 along the y direction.

The first ends of the top sealing edge 320 and the side sealing edge 330 are all tiled at the first end surface 110 of the cell body 100, for example, the top sealing edge 320 may be tiled at the surface of the first end surface 110, and the first end of the side sealing edge 330 is tiled at the surface of the top sealing edge 320 away from the first end surface 110, that is, the first end of the side sealing edge 330 is stacked on the first end surface 110 of the cell body 100 together with the top sealing edge 320.

Alternatively, in the embodiment of the present application, the first end portions of the top sealing edge 320 and the side sealing edge 330 are disposed in the same plane, and in the plane where the first end portions of the top sealing edge 320 and the side sealing edge 330 are located, a gap 112 is formed between the first end portion of the side sealing edge 330 and the top sealing edge 320, so that the first end portion of the side sealing edge 330 and the top sealing edge 320 do not need to be stacked, and the height of the whole battery along the y direction is reduced.

Illustratively, the first end surface 110 is provided with an adhesive layer, and the first end of the top edge 320 and/or the first end of the side edge 330 are connected to the first end surface 110 through the adhesive layer, so that the connection between the top edge 320 and the first end surface 110, and/or the first end of the side edge 330 and the first end surface 110 is more stable through the adhesive layer.

For example, the adhesive layer may be formed on the first end surface 110 by a dispensing process, so that the package 300 of the battery is simple in structure and easy to implement, the work difficulty of packaging the package 300 may be effectively reduced, the cost of packaging the battery cell body 100 may be reduced, and the work efficiency of packaging the battery cell body 100 may be effectively improved.

In some possible embodiments, the package main body 310 may be integrally disposed on the outer circumferential surface of the cell body 100 along the y direction, or the package main body 310 may further include a first package portion 311 and a second package portion 312, where the first package portion 311 extends along the x direction, the first package portion 311 connects the top sealing edge 320 and the two side sealing edges 330, the second package portion 312 is disposed opposite to the first package portion 311, two ends of the second package portion 312 extend along the z direction and are connected to two ends of the first package portion 311 along the x direction, and the two side sealing edges 330 cover two ends of the second package portion 312, so that the connection between the first package portion 311 and the second package portion 312 is more stable.

Referring to fig. 5-9, a gap 340 is provided between the first end of the side sealing edge 330 and the top sealing edge 320, and illustratively, the first packaging part 311 has an unfolded state and a folded state opposite to each other, and when the first packaging part 311 is in the unfolded state, the top sealing edge 320, the two side sealing edges 330 and the first packaging part 311 are disposed in the same plane; when the first sealing part 311 is in a folded state, the two side sealing edges 330 connected to the first sealing part 311 and the first sealing part 311 are bent and flatly laid on the first end surface 110 of the cell body 100 to form the battery.

When the first packaging part 311 is in the unfolded state, the first end part of the inner side sealing edge 330 and the top sealing edge 320 are arranged at intervals on the same plane, and the gap 340 between the first end part of the side sealing edge 330 and the top sealing edge 320 is far away from the first packaging part 311 along the y direction; when the first packaging part 311 is in a folded state, the two side sealing edges 330 and the top sealing edge 320 are bent through the notch 340, so that the two side sealing edges 330 and the top sealing edge 320 are tiled on the first end surface 110 of the cell body 100.

It will be readily appreciated that the shape and size of the notch 340 will have an effect on the positional relationship between the side seal 330 and the top seal 320 when the first packaging part 311 is in the folded state.

Referring to fig. 5 to 9, for example, when the first packaging part 311 is in the unfolded state, the notch 340 may be one of a linear notch 340, a trapezoidal notch 340, a circular arc notch 340, a rectangular notch 340, and a triangular notch 340. When the notch 340 is set to be the linear notch 340, the two side sealing edges 330 and the top sealing edge 320 are bent through the notch 340, so that the two side sealing edges 330 and the top sealing edge 320 are tiled on the first end surface 110 of the battery cell body 100, the side sealing edge 330 covers the surface of the top sealing edge 320 far away from the first end surface 110, or the top sealing edge 320 covers the surface of the side sealing edge 330 far away from the first end surface 110, that is, the top sealing edge 320 and the side sealing edge 330 are stacked.

When the notch 340 is set to be one of the trapezoid notch 340, the arc notch 340, the rectangular notch 340 and the triangular notch 340, the two side sealing edges 330 and the top sealing edge 320 are bent through the notch 340, the two side sealing edges 330 and the top sealing edge 320 are flatly laid on the first end surface 110 of the cell body 100, and the top sealing edge 320 and the side sealing edge 330 may be stacked on the first end surface 110 of the cell body 100, or, in a plane where the first end portions of the top sealing edge 320 and the side sealing edge 330 are located, a gap 112 is formed between the first end portion of the side sealing edge 330 and the top sealing edge 320, so that the first end portion of the side sealing edge 330 and the top sealing edge 320 do not need to be stacked on the first end surface 110 of the cell body 100.

Illustratively, the length of the first end of the side seal 330 is greater than or equal to 0.6 mm and less than or equal to 1.5 mm. For example, the length of the first end of the side seal 330 may be set to 0.8 mm, or the length of the first end of the side seal 330 may also be set to 1 mm, and the length of the first end of the side seal 330 according to the embodiment of the present application is not further limited as long as the stability of the connection between the first end of the side seal 330 and the first end surface 110 can be ensured.

In some possible embodiments, the side sealing edge 330 has a fixed end and a movable end opposite to each other, and a plane perpendicular to the y direction is taken as a cross section, the fixed end of the side sealing edge 330 is connected to the package main body 310, and the movable end of the side sealing edge 330 is bent toward the cell body 100, for example, the movable end of the side sealing edge 330 extends along the z direction and is close to the first package portion 311, and the movable ends of the two side sealing edges 330 are close to each other, so as to reduce the possibility that the side sealing edge 330 is separated from the package main body 310.

Through adopting the above technical scheme, when first encapsulation portion 311 is in the expansion state, top banding 320, two side banding 330 and first encapsulation portion 311 set up in the coplanar, when buckling the expansion end of side banding 330 and setting up towards electric core body 100, can buckle the expansion end of side banding 330 towards electric core body 100 along the x direction earlier, and the expansion end sets up in the one side of keeping away from first encapsulation portion 311, make the expansion end of two side banding 330 set up relatively, buckle side banding 330 towards second encapsulation portion 312 afterwards, make two equal butt joints of side banding 330 at the surface of second encapsulation portion 312, in order to realize the process of buckling of side banding 330.

Referring to fig. 1 and fig. 2, in some possible embodiments, the tab 200 includes a bent portion 210 and an extended portion 220, where the bent portion 210 is connected to the cell body 100, the bent portion 210 is disposed in a flat manner on the first end surface 110, the extended portion 220 is connected to the bent portion 210, and an extending direction of the extended portion 220 is perpendicular to the first end surface 110. The bending part 210 is connected to the cell body 100, and a part of the top sealing edge 320 encapsulates the bending part 210 of the tab 200, that is, the bending part 210 is encapsulated in the top sealing edge 320. Therefore, the top sealing edge 320 can protect the tab 200 to a certain extent, and meanwhile, the firmness and reliability of connection between the tab 200 and the battery cell body 100 can be further improved, and the stability of the battery performance is improved.

When the top sealing edge 320 is bent to make the top sealing edge 320 flatly arranged on the first end surface 110, the bending portion 210 of the tab 200 is bent along with the top sealing edge 320, so that the bending portion 210 is also flatly arranged on the first end surface 110, and meanwhile, the extending portion 220 extends parallel to the first end surface 110 (refer to the structure in fig. 2). The extending portion 220 may then be bent, for example, the extending portion 220 may be bent by 90 ° in a direction away from the cell body 100, so that the extending portion 220 is perpendicular to the first end surface 110, that is, the extending portion 220 of the tab 200 extends in a height direction (i.e., a y direction in the figure) of the cell body 100.

Therefore, the space occupied by the tab 200 in the width direction of the battery (i.e. the z direction in the drawing) can be reduced, the increase of the size of the tab 200 in the width direction of the battery after the bending part 210 and the top sealing edge 320 are bent together is avoided, and the tab 200 can be effectively prevented from being bent or damaged due to interference in the transportation process of the battery.

Meanwhile, the extension part 220 of the tab 200 is perpendicular to the first end surface 110 of the battery cell body 100, and the tab 200 can be conveniently connected with other circuit structures of an electric device, so that the convenience of battery installation is improved.

For example, the tabs 200 may include a positive tab 200 and a negative tab 200, wherein the sum of the numbers of the positive tab 200 and the negative tab 200 may be two, or the sum of the numbers of the positive tab 200 and the negative tab 200 may be more than two. For example, the sum of the number of the positive electrode tabs 200 and the number of the negative electrode tabs 200 may also be three, specifically, the number of the positive electrode tabs 200 and the number of the negative electrode tabs 200 may be selectively set according to specific scene requirements, for example, the number of the positive electrode tabs 200 and the number of the negative electrode tabs 200 may also be greater than two.

Referring to fig. 1 and 2, in some possible embodiments, the first end surface 110 is provided with a protection plate 400, and the protection plate 400 covers at least part of the top sealing edge 320 and at least part of the side sealing edge 330, so that the connection between the top sealing edge 320 and the side sealing edge 330 and the first end surface 110 of the cell body 100 is more stable, and the plane where the protection plate 400 is located is perpendicular to the y direction, that is, the protection plate 400 is flatly disposed on the first end surface 110, so as to reduce the height of the battery in the y direction, increase the unit volume capacity of the cell body 100, and improve the energy density of the battery.

The protection plate 400 includes a protection sheet 410, and the protection sheet 410 covers the surface of the bending portion 210 away from the first end surface 110. Illustratively, the protective sheet 410 may be provided as a nickel sheet to protect the bent portion 210 of the tab 200 to some extent by the protective sheet 410. Also, the number of protective sheets 410 may be adjusted according to the number of tabs 200, for example, the number of protective sheets 410 is equal to the number of tabs 200, and each protective sheet 410 is used to cover the bent portion of one tab 200, so as to protect a plurality of tabs 200 by a plurality of protective sheets 410.

To sum up, the embodiment of the present application provides a battery, include the electric core body 100 that sets up along the first direction to and the packaging part 300 of encapsulation electric core body 100, in the first terminal surface 110 of electric core body 100, set up in the first terminal surface 110 of electric core body 100 through all tiling the first end with top banding 320 and side banding 330, make the first end of side banding 330 and top banding 320 need not to follow first direction and outwards stretch out first terminal surface 110. Thus, compared with the battery in the related art, the package member 300 of the battery provided in the embodiment of the present application does not need to occupy the space of the battery along the first direction, the space occupied by the package member 300 is small, the length of the battery cell body along the first direction is increased, the unit volume capacity of the battery cell body 100 is further increased, and the energy density of the battery is improved.

The embodiment of the present application further provides an electric device, which includes the advantages of the battery, which can be referred to the above description specifically, and is not repeated herein. The touch display device can be a mobile phone, a tablet computer, a notebook computer, an electronic book, electronic paper, a smart watch, and other smart devices powered by a battery.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "comprises" and "comprising," and any variations thereof, as used herein, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral to one another; either directly or indirectly through intervening media, may be used in either the internal or the external relationship of the two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (11)

1. The battery is characterized by comprising a battery cell body and a packaging part for packaging the battery cell body;

the packaging part comprises a top sealing edge and side sealing edges arranged on two opposite sides of the battery cell body; the top sealing edge is flatly laid on a first end face of the battery cell body along a first direction; the side seal edge is tiled along the first end portion in the first direction and arranged on the first end face.

2. The battery of claim 1, wherein the first ends of the top and side seals are disposed in a same plane;

a gap is provided between the first end of the side seal and the top seal in the plane of the first ends of the top and side seals.

3. The battery of claim 1, wherein the first end face is provided with an adhesive layer by which the first end of the top seal and/or the side seal is connected to the first end face.

4. The battery of claim 1, wherein a gap is provided between the first end of the side seal and the top seal.

5. The battery of claim 1, wherein the length of the side seal first end is greater than or equal to 0.6 mm and less than or equal to 1.5 mm.

6. The battery of claim 1, further comprising a tab comprising a bent portion and an extended portion;

the bending portion is connected with the battery cell body, the bending portion is tiled on the first end face, the extending portion is connected with the bending portion, and the extending direction of the extending portion is perpendicular to the first end face.

7. The battery of claim 6, wherein the first end surface is provided with a protective plate covering at least a portion of the top seal edge and at least a portion of the side seal edge, and a plane of the protective plate is perpendicular to the first direction.

8. The battery according to claim 7, wherein the protection plate comprises a protection plate covering a surface of the bending portion away from the first end surface.

9. The battery of any one of claims 1-8, wherein the package further comprises a package main body, and the package main body is wrapped around an outer circumferential surface of the cell body along the first direction;

one end of the packaging body in the first direction is connected with the top sealing edge, and two sides of the packaging body in the first direction are connected with the side sealing edges.

10. The battery of claim 9, wherein a plane perpendicular to the first direction is taken as a cross section, a fixed end of the side sealing edge is connected to the package main body, and a movable end of the side sealing edge is bent toward the cell body.

11. An electric device comprising a battery according to any one of claims 1 to 10.

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