阅读说明：本技术 电芯、电池以及用电设备 (Battery cell, battery and electric equipment ) 是由 姚姝 于 2021-07-14 设计创作，主要内容包括：本申请实施例提供的电芯包括电极组件、包装壳、密封件、与电极组件连接的第一极耳和第二极耳,包装壳包括密封区域,密封件从密封区域伸出至包装壳外设置且部分设置在所述包装壳内,密封件包括沿第一方向连接的第一部分、第二部分和第三部分,第一方向为电芯的宽度方向,沿第二方向,第一极耳从第一部分穿出,第二极耳从第三部分穿出；密封件的第二部分从密封区域伸出至包装壳外设置,在第二方向上,第二部分位于包装壳外的外边缘超出第一部分,第二方向为电芯的长度方向。电芯中的密封件、第一极耳和第二极耳形成一体极耳,从而便于将一体极耳连接到电极组件。由于第二部分延伸到包装壳外,第一极耳和第二极耳位于包装壳外的部分不容易接触短路。(The battery cell provided by the embodiment of the application comprises an electrode assembly, a packaging shell, a sealing element, a first tab and a second tab, wherein the first tab and the second tab are connected with the electrode assembly; the second part of the sealing element extends out of the packaging shell from the sealing area, in the second direction, the outer edge of the second part, which is positioned outside the packaging shell, exceeds the first part, and the second direction is the length direction of the battery cell. The sealing member, the first tab and the second tab in the cell form an integral tab, thereby facilitating connection of the integral tab to the electrode assembly. Since the second portion extends outside the package case, the portions of the first and second tabs located outside the package case are not easily contacted with a short circuit.)

1. A battery cell comprising an electrode assembly, a package casing, a sealing element, a first tab and a second tab connected to the electrode assembly, the electrode assembly being disposed in the package casing, the package casing comprising a sealing region, the sealing element extending from the sealing region to an exterior of the package casing and partially disposed in the package casing,

the sealing element comprises a first part, a second part and a third part which are sequentially connected along a first direction, the first direction is the width direction of the battery cell, and along a second direction, the first tab penetrates out of the first part, and the second tab penetrates out of the third part;

and a second part of the sealing element extends out of the sealing area to the outside of the packaging shell, in the second direction, the outer edge of the second part, which is positioned outside the packaging shell, exceeds the first part, and the second direction is the length direction of the battery cell.

2. The cell of claim 1, wherein the length of the outer edge of the second portion outside the package casing in the second direction beyond the first portion is no less than 2 millimeters.

3. The battery cell of claim 1 or 2, wherein, outside the package casing, a portion of the second portion beyond the first portion in the second direction is a spacer, and a width of the spacer in the first direction is not less than 2 mm.

4. The cell of claim 1 or 2, characterized in that,

and the part of the second part, which exceeds the first part, outside the packaging shell along the second direction is a spacing part, and a gap is reserved between the spacing part and the first pole lug and/or the second pole lug along the first direction.

5. The cell of claim 1 or 2, wherein, in the second direction, a portion of the second portion that exceeds the first portion is a spacer;

the second portion satisfies the condition:

the W1 is the width of the spacer along the first direction outside the package, the W2 is the width of the package along the first direction;

and/or the presence of a gas in the gas,

the second portion satisfies the condition:

the T1 is a thickness of the spacer in a third direction outside the pack case, the T2 is a thickness of the first tab in the third direction, the third direction is perpendicular to the first direction, and the third direction is perpendicular to the second direction.

6. The battery cell of claim 1 or 2, wherein in the first direction, a portion of the first tab that protrudes out of the sealing member is bent away from the second tab, and/or a portion of the second tab that protrudes out of the sealing member is bent away from the first tab.

7. The battery cell of claim 1 or 2, wherein, in the first direction, a portion of the first tab located in the sealing member is bent away from the second tab, and/or a portion of the second tab located in the sealing member is bent away from the first tab.

8. The battery cell of claim 1 or 2, wherein in the first direction, an end of the first tab connected to the electrode assembly is bent away from the second tab, and/or an end of the second tab connected to the electrode assembly is bent away from the first tab.

9. A battery comprising a cell according to any of claims 1 to 8.

10. An electric device comprising the battery of claim 9.

Technical Field

The embodiment of the application relates to the technical field of battery cells.

Background

The battery cell is a device which converts external energy into electric energy and stores the electric energy in the battery cell so as to supply power to external electric equipment (such as portable electronic equipment) at required time, and the battery cell is widely applied to electric equipment such as unmanned aerial vehicles, mobile phones, flat panels and notebook computers. At present, a battery cell includes an electrode assembly and two tabs, where the two tabs are connected to the electrode assembly respectively, and then connected to an external load to supply power to the external load.

In the process of implementing the present application, the applicant of the present application finds that: with the volume of the electric equipment being smaller and smaller, the space for storing the battery cell is also smaller and smaller, in other words, the volume of the battery cell is also smaller and smaller, and two tabs in the battery cell are usually independent, for the battery cell with a smaller volume, two independently arranged tabs are welded to an electrode assembly of the battery cell, the installation is inconvenient, and the two tabs are easy to contact to cause short circuit.

Disclosure of Invention

In view of the above problems, embodiments of the present application provide a battery cell, a battery pack, and a power consumption device, which overcome or at least partially solve the problem that two tabs in the battery cell are usually independently arranged, so that when the two independently arranged tabs are welded to an electrode assembly of the battery cell, installation is inconvenient, and the two tabs are easily contacted and shorted.

According to one aspect of the embodiments of the present application, there is provided a battery cell including an electrode assembly, a package casing, a sealing member, and first and second tabs connected to the electrode assembly. The electrode assembly is arranged in the packaging shell, the packaging shell comprises a sealing area, the sealing element extends out of the sealing area to be arranged outside the packaging shell, part of the sealing element is arranged in the packaging shell, the sealing element comprises a first portion, a second portion and a third portion which are sequentially connected along a first direction, the first direction is the width direction of the battery core, the first tab penetrates out of the first portion along a second direction, and the second tab penetrates out of the third portion. And a second part of the sealing element extends out of the sealing area to the outside of the packaging shell, in the second direction, the outer edge of the second part, which is positioned outside the packaging shell, exceeds the first part, and the second direction is the length direction of the battery cell. The sealing element, the first tab and the second tab in the battery cell form an integrated tab, so that the integrated tab is convenient to mount when being connected to the electrode assembly. Since the first pole lug and the second pole lug are separated by the second part in the sealing element, the second part extends out of the packaging shell, and the outer edge of the second part, which is positioned outside the packaging shell, exceeds the first part, so that the part, positioned outside the packaging shell, of the first pole lug and the second pole lug is not easy to contact with a short circuit.

In an alternative, the second portion has a length greater than the first portion and/or the second portion has a length greater than the third portion in the second direction, so that the second portion can space the first and second tabs outside the package such that the first and second tabs are not easily contacted by a short circuit.

In an alternative form, the second portion has an outer edge inside the package that extends beyond the first portion in the second direction, i.e. the second portion acts as a spacer for the first and second pole tabs inside the package, so that the first and second pole tabs inside the package do not easily touch the short circuit.

In an alternative mode, the length of the outer edge of the second part outside the packaging shell in the second direction exceeds the length of the first part by not less than 2 mm, so that the second part can not only play a role in spacing the first pole lug and the second pole lug, but also facilitate the processing of the sealing element.

In an alternative mode, the part of the second part, which exceeds the first part, outside the packaging shell along the second direction is a spacing part, and the width of the spacing part along the first direction is not less than 2 mm, so that the second part can not only space the first pole lug and the second pole lug, but also facilitate the processing of the sealing element.

In an alternative form, the portion of the second portion beyond the first portion in the second direction is a spacer, and the spacer has a gap with the first tab and/or the second tab in the first direction, so that the second portion can space the first tab and the second tab, and the first tab and the second tab are connected to an external circuit conveniently due to the gap.

In an alternative mode, along the second direction, a portion of the second portion beyond the first portion is a spacer, and the second portion satisfies a condition:

the W1 is the width of the spacer along the first direction outside the package, the W2 is the width of the package along the first direction; and/or, the second part satisfies the condition:

the T1 is a thickness of the spacer portion in a third direction outside the pack case, and the T2 is a thickness of the first tab in the third direction, which is perpendicular to the first direction, which is perpendicular to the second direction. By defining the ratio of the second portion to the width of the packaging shell in the first direction and/or to the thickness of the first tab in the third direction, the design of the second portion not only reduces the risk of contact shorts between the first tab and the second tab, but also meets the requirements of the production application

In an optional mode, in the first direction, the part of the first tab penetrating out of the sealing element is bent towards the direction away from the second tab, and/or the part of the second tab penetrating out of the sealing element is bent towards the direction away from the first tab, so that the first tab and the second tab are less prone to contact short circuit outside the packaging shell.

In an optional mode, in the first direction, the first tab is located the part of sealing member is towards keeping away from the direction bending arrangement of second tab, and/or, the second tab is located the part of sealing member is towards keeping away from the direction bending arrangement of first tab to outside the packing casing, first tab and second tab are the opposite side away from, and first tab and second tab are difficult to the contact short circuit.

In an alternative mode, in the first direction, the end of the first tab connected with the electrode assembly is bent towards the direction away from the second tab, and/or the end of the second tab connected with the electrode assembly is bent towards the direction away from the first tab, so that the first tab and the second tab are less prone to contact short circuit in the packaging shell.

According to an aspect of an embodiment of the present application, there is provided a battery including any one of the battery cells described above.

According to an aspect of the embodiments of the present application, there is provided an electric device including the battery described above.

The beneficial effects of the embodiment of the application are that: the battery cell is provided, and the sealing element, the first pole lug and the second pole lug in the battery cell are arranged into an integrated structure to form an integrated pole lug, so that the battery cell is convenient to install when the integrated pole lug is connected to an electrode assembly. Furthermore, the first pole lug and the second pole lug are separated by a second part in the sealing element, the second part extends out of the packaging shell, the outer edge of the second part, which is positioned outside the packaging shell, exceeds the first part, and therefore the parts, positioned outside the packaging shell, of the first pole lug and the second pole lug can not be easily contacted to cause short circuit.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

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

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 according to an embodiment of the present application;

fig. 3 is a schematic diagram of another implementation manner of a battery cell provided in an embodiment of the present application;

FIG. 4 is an enlarged view of section M of FIG. 3 provided by an embodiment of the present application;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 1 according to an embodiment of the present application;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 1 according to an embodiment of the present application;

fig. 7 is a schematic diagram of another implementation manner of a battery cell provided in an embodiment of the present application;

FIG. 8 is a cross-sectional view taken along line C-C of FIG. 7 according to an embodiment of the present application;

fig. 9 is a schematic diagram of a further implementation manner of a battery cell provided in an embodiment of the present application;

FIG. 10 is a cross-sectional view taken along line D-D of FIG. 9 according to an embodiment of the present application;

fig. 11 is a schematic diagram of another implementation manner of a battery cell provided in an embodiment of the present application.

Detailed Description

In order to facilitate an understanding of the present application, the present application is described in more detail below with reference to the accompanying drawings and specific embodiments. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and the like as used herein are for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and fig. 2, the battery cell 100 includes: an electrode assembly 10, a package case 20, a sealing member 30, a first tab 40, and a second tab 50. The first tab 40 and the second tab 50 are connected to the motor assembly. The electrode assembly 10 is housed in a package case 20. The sealing member 30 is disposed to extend from the packing case 20 to the outside of the packing case 20 and a part of the sealing member 30 is disposed inside the packing case 20. A first tab 40 projects from the seal 30 out of the package 20. A second tab 50 projects from the seal 30 out of the package 20. The sealing member 30, the first tab 40 and the second tab 50 in the battery cell 100 form an integrated tab, so that when the integrated tab is connected to the electrode assembly 10, the installation is convenient.

With reference to fig. 2 for the electrode assembly 10 described above, the electrode assembly 10 includes a first pole piece 101, a second pole piece 102, and a separator 103 disposed between the first pole piece 101 and the second pole piece 102. The first pole piece 101 and the second pole piece 102 can be used as a positive pole piece and a negative pole piece of the battery cell 100, respectively. In some embodiments, the first pole piece 101, the diaphragm 103 and the second pole piece 102 are stacked to form a layered structure. In other embodiments, the first pole piece 101, the separator 103, and the second pole piece 102 are wound to form a wound structure. The present application does not limit the specific structure of the electrode assembly 10, and regardless of whether the electrode assembly 10 is in a laminated structure or a wound structure, the characteristics of the sealing member 30 provided in the embodiment of the present application, which facilitate the connection of the first and second tabs 40 and 50 with the electrode assembly 10, and the application purpose of the sealing member 30, which can effectively alleviate the short circuit of the portions of the first and second tabs 40 and 50 located outside the package case 20, are not easily touched.

Referring to fig. 1 and 2, the package case 20 includes a receiving region 201 and a sealing region 202, wherein the receiving region 201 is used for receiving the electrode assembly 10. The sealing area 202 is connected to the receiving area 201. In some embodiments, after the electrode assembly 10 is received in the package case 20, the package case 20 is sealed to form the receiving region 201 and the sealing region 202. In some embodiments, the sealing region 202 is also referred to as a bead portion.

Referring to fig. 2 for the electrode assembly 10, the first tab 40 and the second tab 50, in some embodiments, the first tab 40 is connected to a first pole piece 101 and the second tab 50 is connected to a second pole piece 102. When the first pole piece 101 is a positive pole piece of the battery cell 100, the first pole tab 40 is a positive pole tab of the battery cell 100, and when the second pole piece 102 is a negative pole piece of the battery cell 100, the second pole tab 50 is a negative pole tab of the battery cell 100.

With respect to the seal 30 described above, and referring to fig. 1 and 2, along the first direction F1, the seal 30 includes a first portion 301, a second portion 302, and a third portion 303. The first direction F1 is a width direction of the battery cell 100. The first tab 40 extends out of the first portion 301 and the second tab 50 extends out of the third portion 303 along a second direction F2, where the second direction F2 is a longitudinal direction of the battery cell 100. The first direction F1 and the second direction F2 are perpendicular to each other.

It is noted that in some embodiments, the seal 30 is formed by curing a flowable resin to encapsulate the first and second tabs 40, 50. In other embodiments, after the first and second tabs 40 and 50 are placed on the mold, the sealing member 30 may be formed by injection molding a flowable resin on the first and second tabs 40 and 50.

In some embodiments, the material of the sealing member 30 is polypropylene, or other polyolefin-based material.

It will be appreciated that, since the second portion 302 is located intermediate the first portion 301 and the second portion 302, the first portion 301 is used for the first tab 40 to protrude out, and the third portion 303 is used for the second tab 50 to protrude out, such that the second portion 302 is spaced between the first tab 40 and the second tab 50, and the first tab 40 and the second tab 50 are spaced apart along the first direction F1.

The sealing member 30 extends from the sealing region 202 to the outside of the package 20. In some embodiments, the first and second tabs 40 and 50 are connected with the electrode assembly 10 after the seal 30 is formed on the first and second tabs 40 and 50. The package case 20 includes a bag body (not shown) and a bag mouth (not shown), the first tab 40, the second tab 50 and the sealing member 30 are positioned at the bag mouth after the electrode assembly 10 is placed into the bag body from the bag mouth, and then the bag mouth and the sealing member 30 are sealed such that the bag body of the package case 20 forms a receiving area 201, and the bag mouth of the package case 20 forms a sealing area 202, and a structure in which the sealing member 30 protrudes from the sealing area 202 to be disposed outside the package case 20 is formed.

In some embodiments, in the second direction F2, the second portion 302 of the seal 30 extends from the sealing region 202 to be disposed outside the package 20. In some embodiments, in the second direction F2, the first portion 301 of the seal 30 is disposed to extend from the sealing region 202 to the receiving region 201, and/or the second portion 302 of the seal 30 is disposed to extend from the sealing region 202 to the receiving region 201, and/or the third portion 303 of the seal 30 is disposed to extend from the sealing region 202 to the receiving region 201.

In the second direction F2, one of the second portions 302 is located outside the wrapper 20, and the outer edge of the second portion 302 located outside the wrapper 20 exceeds the first portion 301. In some embodiments, a portion of first portion 301 is located outside of package 20. In other embodiments, a portion of third portion 303 is located outside of package 20. Since the second portion 302 is spaced between the first and second tabs 40 and 50 and the outer edge of the second portion 302 outside the pack case 20 exceeds the first portion 301, the portions of the first and second tabs 40 and 50 outside the pack case 20 are not easily contacted with a short circuit due to the arrangement of the second portion 302.

Referring to fig. 1, whether a portion of the first portion 301 is outside the package 20 or not, the portion of the second portion 302 outside the package 20 in the second direction F2 beyond the first portion 301 is a spacer 3021 outside the package 20. The spacer 3021 may be in contact with the first tab 40 and/or the second tab 50.

Referring to fig. 3 and 4, the spacer 3021 may also be non-contact with the first tab 40 and/or the second tab 50. I.e. outside the package 20, there is a gap 302s between the spacer 3021 and the first tab 40 and/or the second tab 50 in the first direction F1.

Referring to fig. 1 and 3, in other embodiments, the second portion 302 extends beyond the third portion 303 beyond the outer edge of the package 20. A portion of the first portion 301 is located outside the package 20. A portion of the third portion 303 is located outside the package 20. Since the second portion 302 is spaced between the first and second tabs 40 and 50 and the outer edge of the second portion 302 outside the pack case 20 exceeds the third portion 303, the portions of the first and second tabs 40 and 50 outside the pack case 20 are less likely to contact a short circuit due to the provision of the second portion 302.

Referring to fig. 1, 3 and 4, the portion of the second portion 302 outside the package 20 and beyond the third portion 303 may be in contact with the first tab 40 and/or the second tab 50, or may be non-contact, i.e., there is a gap 302s between the portion of the second portion 302 beyond the third portion 303 and the first tab 40 and/or the second tab 50 in the first direction F1 outside the package 20.

It is worth noting that in some embodiments, along the second direction F2, an edge of the first portion 301 away from the accommodating area 201 of the package 20 is flush with an edge of the third portion 303 away from the accommodating area 201 of the package 20, and then a portion of the second portion 302 outside the package 20 and beyond the third portion 303 is the spacing portion 3021.

In some embodiments, the outer edge of the second portion 302 that is outside the wrapper 20 in the second direction F2 is no less than 2 mm beyond the length of the first portion 301 or the third portion 303. That is, in the second direction F2, the length of the spacer 3021 is not less than 2 mm. Referring to fig. 5 and 6, in some embodiments, the outer edge of the second portion 302 outside the package 20 exceeds the length of the first portion 301 or the third portion 303 by:

l1 is the length of the outer edge of second portion 302 outside of pack 20 beyond first portion 301 in second direction F2, i.e. L1 is the length of spacer 3021. D is the length of the portion of the first tab 40 or the second tab 50 outside the package 20 beyond the sealing area 202 of the package 20 in the second direction F2.

It should be noted that, in practical production applications, the minimum value of the length L1 of the second portion 302 outside the package 20 beyond the first portion 301 in the second direction F2 is 2 mm, and the minimum value of the length D of the portion of the first tab 40 or the second tab 50 beyond the sealing region 202 of the package 20 in the second direction F2 outside the package 20 is 8 mm, so as to facilitate the performance test of the battery cell 100 by the manufacturer of the battery cell 100, and the ratio of L1 to D is not less than 0.25.

It should be noted that, in practical production applications, in the second direction F2, the portion of the second portion 302 outside the package 20 does not exceed the portion of the first tab 40 or the second tab 50 beyond the sealing area 202 of the package 20, and when the first portion 301 is flush with the outer edge of the sealing area 202 or the third portion 303 is flush with the outer edge of the sealing area 202 and the outer edge of the second portion 302 outside the package 20 is flush with the outer edge of the first tab 40 or the second tab 50 beyond the sealing area 202 of the package 20, the length L1 of the outer edge of the second portion 302 outside the package 20 beyond the first portion 301 is equal to the length D of the portion of the first tab 40 or the second tab 50 beyond the sealing area 202 of the package 20 in the second direction F2, and the ratio of L1 to D is 1.

Of course, in the second direction F2, the portion of the second portion 302 located outside the packaging shell 20 may also be provided beyond the portion of the first tab 40 or the second tab 50 beyond the sealing area 202 of the packaging shell 20.

Referring to fig. 5, in some embodiments, the width of the spacer 3021 of the second portion 302 is not less than 2 mm in the first direction F1. The second portion 302 can not only space the first tab 40 and the second tab 50, so that the portions of the first tab 40 and the second tab 50 outside the package case 20 are not easy to contact short circuit, and the processing and forming of the sealing element 30, the first tab 40 and the second tab 50 are facilitated.

In some embodiments, the second portion 302 satisfies the condition:

w1 is the width of spacer 3021 in first direction F1 outside of package 20, and W2 is the width of package 20 in first direction F1.

It is noted that, in practical production applications, the maximum value of width W2 of package 20 along first direction F1 is 110 mm, and since the minimum value of width W1 of spacer 3021 along first direction F1 is 2 mm outside package 20, the ratio of W1 to W2 is not less than 0.02.

It is noted that, in practical production applications, the maximum value of the width W2 of the package case 20 along the first direction F1 is 110 mm, the minimum distance of the first tab 40 from the outer edge of the package case 20 in the direction away from the second tab 50 is 2 mm, the minimum distance of the second tab 50 from the outer edge of the package case 20 in the direction away from the first tab 40 is 2 mm, the minimum value of the width of the first tab 40 along the first direction F1 is 2 mm, and the minimum value of the width of the second tab 50 along the first direction F1 is 2 mm, so that the maximum value of the width W1 of the spacing portion 3021 along the first direction F1 is 102 mm outside the package case 20, and the ratio of W1 to W2 is not less than 0.93, which defines the ratio of W1 to W2 is not less than 0.9.

Referring to fig. 6, in some embodiments, the thickness of the spacer 3021 is not less than 2 mm along a third direction F3, where the third direction F3 is the thickness direction of the battery cell 100, the third direction F3 is perpendicular to the first direction F1, and the third direction F3 is perpendicular to the second direction F2.

In some embodiments, the second portion 302 satisfies the condition:

t1 is the thickness of the spacer 3021 in the third direction F3 outside the package 20, and T2 is the thickness of the first tab 40 in the third direction F3.

It is worth noting that, in practical production applications, outside the package 20, in the third direction F3, the minimum value of the thickness T1 of the spacing portion 3021 is 0.055 mm, and in the third direction F3, the maximum value of the thickness T2 of the first tab 40 is 0.15 mm, so that the minimum value of the ratio of T1 and T2 is 0.37.

It is worth noting that in practical production applications, generally, the thickness T1 of the spacer 3021 in the third direction F3 may be greater than the thickness T2 of the first tab 40 in the third direction F3 outside the package 20, whereas, generally, the thickness T1 of the spacer 3021 in the third direction F3 is not greater than the thickness of the first portion 301 outside the package 20.

Referring to fig. 2, in some embodiments, in the second direction F2, the length of the second portion 302 is greater than the length of the first portion 301, and the length of the second portion 302 is greater than the length of the third portion 303, so that the outer edge of the second portion 302 outside the wrapper 20 may be disposed beyond the first portion 301 or the third portion 303, and the outer edge of the second portion 302 inside the wrapper 20 may be disposed beyond the first portion 301 or the third portion 303. The structure of the second portion 302 beyond the first portion 301 or the third portion 303 inside the package 20 can refer to the structure of the second portion 302 beyond the first portion 301 or the third portion 303 outside the package 20, and the description thereof is omitted.

In some embodiments, the outer edge of the second portion 302 inside the package 20 exceeds the third portion 303, and the structure of the second portion 302 exceeding the third portion 303 inside the package 20 can refer to the structure of the second portion 302 exceeding the first portion 301 outside the package 20, which is not described in detail herein.

In some embodiments, a portion of the first portion 301 is also located within the wrapper 20 and a portion of the third portion 303 is also located within the wrapper 20.

Referring to fig. 7 and 8 for the first tab 40 and the second tab 50, in some embodiments, in the first direction F1, a portion of the first tab 40 penetrating through the sealing member 30 is bent away from the second tab 50, and/or a portion of the second tab 50 penetrating through the sealing member 30 is bent away from the first tab 40, so that on one hand, a second portion 302 of the sealing member 30 is spaced between the first tab 40 and the second tab 50 outside the package case 20, and on the other hand, the first tab 40 and the second tab 50 are respectively bent away from each other, so that the first tab 40 and the second tab 50 are less likely to contact a short circuit outside the package case 20.

Referring to fig. 9 and 10, in some embodiments, in the first direction F1, the portion of the first tab 40 located on the sealing member 30 is bent away from the second tab 50, and/or the portion of the second tab 50 located on the sealing member 30 is bent away from the first tab 40. That is, the first tab 40 and the second tab 50 are respectively bent back to each other outside the package case 20, and the first tab 40 and the second tab 50 are not easily short-circuited.

In some embodiments, the portion of the first tab 40 located on the sealing member 30 is bent away from the second tab 50 in the first direction F1, and the portion of the first tab 40 extending out of the sealing member 30 is also bent away from the package 20 in the first direction F1.

It should be noted that, referring to fig. 11, after the portion of the first tab 40 located on the sealing member 30 is bent in the first direction F1 in a direction away from the second tab 50, and/or the portion of the second tab 50 located on the sealing member 30 is bent in a direction away from the first tab 40, since the first tab 40 and the second tab 50 are respectively opposite to each other outside the package case 20, the first tab 40 and the second tab 50 are not easily contacted to a short circuit, so that the outer edge of the first portion 301 or the third portion 303 located outside the package case 20 may extend to be flush with the outer edge of the second portion 302 located outside the package case 20.

Referring to fig. 8 or 10, in some embodiments, in the first direction F1, the end of the first tab 40 connected to the electrode assembly 10 is bent away from the second tab 50, and/or the end of the second tab 50 connected to the electrode assembly 10 is bent away from the first tab 40. That is, the first tab 40 and the second tab 50 are respectively bent back toward each other in the package case 20, and the first tab 40 and the second tab 50 are not easily short-circuited in contact in the package case 20.

In the embodiment of the present application, the battery cell 100 includes an electrode assembly 10, a package case 20, a sealing member 30, and a first tab 40 and a second tab 50 connected to the electrode assembly 10. The package 20 includes a sealing area 202, and the sealing member 30 is disposed outside the package 20 extending from the sealing area 202 in the second direction F2. The seal 30 comprises a first portion 301, a second portion 302 and a third portion 303 connected along a first direction F1. The first portion 301 is used for the first tab 40 to protrude out, and the third portion 303 is used for the second tab 50 to protrude out. A second portion 302 of the sealing member 30 is arranged to extend from the sealing area 302 to outside the package 20, and the outer edge of the second portion 302 located outside the package 20 exceeds the first portion 301 in the second direction F2. By providing the sealing member 30 in the battery cell 100, the sealing member 30, the first tab 40, and the second tab 50 in the battery cell 100 form an integral tab, so that when the integral tab is connected to the electrode assembly 10, the installation is convenient. Since the first tab 40 and the second tab 50 are spaced apart by the second portion 302 of the sealing member 30, the second portion 302 extends out of the pack case 20, the outer edge of the second portion 302 located outside the pack case 20 exceeds the first portion 301, and the portions of the first tab 40 and the second tab 50 located outside the pack case 20 are not easily contacted by a short circuit.

The embodiment of the present application also provides a battery, and the battery includes any one of the battery cells 100 described above. For the specific structure and function of the battery cell 100, reference may be made to the above embodiments, and details are not repeated here. In some embodiments, the battery includes an enclosure and a plurality of stacked battery cells 100, the plurality of stacked battery cells 100 being housed within the enclosure. In other embodiments, the battery further includes a bms (battery Management system) and a circuit board for performing charge and discharge Management on the plurality of battery cells 100.

The embodiment of the application also provides electric equipment, and the electric equipment comprises a battery. The powered device also includes a load. The battery is used to power the load. The electric equipment can be an energy storage product, a mobile phone, a tablet, an unmanned aerial vehicle, a single wheel or an electric vehicle with more than two wheels, or an electric cleaning tool and the like. For example, in the above-described unmanned aerial vehicle, a battery is mounted on the unmanned aerial vehicle, and the battery is used for supplying power to loads on the unmanned aerial vehicle, including a flight system, a control system, a camera system, and the like.

It should be noted that the description of the present application and the accompanying drawings set forth preferred embodiments of the present application, however, the present application may be embodied in many different forms and is not limited to the embodiments described in the present application, which are not intended as additional limitations to the present application, but are provided for the purpose of providing a more thorough understanding of the present disclosure. Moreover, the above-mentioned technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope described in the present specification; further, modifications and variations may occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the scope of the appended claims.