CN217589151U

CN217589151U - Battery and electric equipment

Info

Publication number: CN217589151U
Application number: CN202220421492.1U
Authority: CN
Inventors: 陈雨; 蒋超; 李翔
Original assignee: Dongguan Poweramp Technology Ltd
Current assignee: Dongguan Poweramp Technology Ltd
Priority date: 2021-03-05
Filing date: 2022-02-28
Publication date: 2022-10-14
Anticipated expiration: 2032-02-28
Also published as: WO2022183874A1; CN116941121A

Abstract

The embodiment of the application relates to the technical field of batteries and discloses a battery and electric equipment. The battery comprises a housing shell, a battery core group and a circuit board. Wherein, the containing shell extends in a bending shape. The electric core group is accommodated in the accommodating shell. The circuit board is also accommodated in the accommodating shell, and the electric core group is electrically connected with the circuit board. The battery that this application embodiment provided is the shape of bending extension, so it can adapt to the battery compartment of crooked shape in the consumer.

Description

Battery and electric equipment

[ technical field ] A

The embodiment of the application relates to the technical field of batteries, in particular to a battery and electric equipment.

[ background of the invention ]

A battery is a device that converts external energy into electric energy and stores the electric energy in the battery so as to supply power to external electric devices (such as portable electronic devices) at a desired time. At present, batteries are widely used in electric devices such as mobile phones, tablet computers, notebook computers and the like.

The inventor of the application finds out in the process of realizing the application that: at present, most of batteries in the market are square, but some electric equipment is convenient to arrange a bent battery compartment due to the arrangement of components in the electric equipment, so that a battery matched with the bent battery compartment is needed to be designed.

[ Utility model ] A method for manufacturing a semiconductor device

The embodiment of the application aims at providing a battery and electric equipment so as to adapt to a bent battery compartment in the electric equipment.

The embodiment of the application adopts the following technical scheme for solving the technical problems:

a battery comprises a housing shell, a battery core group and a circuit board. The accommodating shell extends in a bent shape, the electric core group is accommodated in the accommodating shell, the circuit board is accommodated in the accommodating shell, and the electric core group is electrically connected with the circuit board. The battery that this application embodiment provided is the shape of bending extension, so it can adapt to the battery compartment of crooked shape in the consumer.

As a further improvement of the above scheme, the battery core group comprises a plurality of battery cores, and the battery cores are electrically connected with the circuit board. The accommodating shell comprises a first part, a second part and a third part which are connected in sequence. The first portion is obliquely arranged relative to the second portion, the third portion is obliquely arranged relative to the second portion, and the first portion, the second portion and the third portion jointly enclose to form a concave portion.

As a further improvement of the above, the circuit board is provided on the second portion. The battery cell group comprises a first battery cell and a second battery cell, wherein the first battery cell is arranged in the first part, and the second battery cell is arranged in the third part. The circuit board is arranged between the two cell groups of the first cell and the second cell by the arrangement, so that each cell is electrically connected with the circuit board respectively.

As a further improvement of the foregoing solution, the first battery cell includes a first battery cell main body and a first tab extending out of the first battery cell main body, the first battery cell main body is disposed in an inclined manner with respect to the circuit board, and the first tab is electrically connected to the circuit board. The second battery cell comprises a second battery cell main body and a second lug extending out of the second battery cell main body, the second battery cell main body is arranged opposite to the circuit board in an inclined mode, and the second lug is electrically connected with the circuit board.

As a further improvement of the above scheme, an included angle between the first cell main body and the circuit board is between 110 ° and 170 °.

As a further improvement of the above scheme, the battery cell group comprises two first battery cells and two second battery cells, the two first battery cells are arranged in a stacked manner, and the two second battery cells are arranged in a stacked manner. The circuit board comprises a first side surface and a second side surface which are oppositely arranged, wherein a first electrode lug of one first battery cell is connected to the first side surface, a first electrode lug of the other first battery cell is welded to the second side surface, a second electrode lug of one second battery cell is connected to the first side surface, and a second electrode lug of the other second battery cell is welded to the second side surface. The arrangement helps to isolate the tabs of the two first cells (second cells) so as to reduce the risk of short circuit of the tabs of different cells.

As a further improvement of the foregoing solution, the first cell main body includes a first main body portion and a first encapsulating portion formed by extending from one end of the first main body portion close to the circuit board, and the first tab extends out of the first cell main body from the first encapsulating portion. The end part of the circuit board close to the first battery cells is arranged between the first packaging parts of the two first battery cells. The arrangement helps to isolate the tabs of the two first cells (second cells) so as to reduce the risk of short circuit of the tabs of different cells.

As a further improvement of the above scheme, the first package portion includes a first main package portion and two first auxiliary package portions, the first main package portion is formed by extending from one end of the first main body portion close to the circuit board, and the first auxiliary package portion is disposed on one side of the first main package portion departing from the first main body portion. The first battery cell comprises two tabs, each first tab corresponds to one of the first auxiliary packaging parts, the first tabs extend out of the first battery cell main body from the first auxiliary packaging parts, and the end part of the circuit board close to the first battery cell is arranged between the two first auxiliary packaging parts.

As a further improvement of the foregoing, in two first battery cells arranged in a stacked manner, the first cell main body includes a first surface and a second surface that are oppositely arranged along the stacking direction of the first battery cells, and the first surfaces of adjacent first battery cells are adjacently arranged. The distance between the first packaging part and the first surface is greater than the distance between the first packaging part and the second surface, and the end part of the circuit board close to the first battery cell is arranged between the first packaging parts of the adjacent first battery cells.

As a further improvement of the above, in two first battery cells arranged in a stacked manner, the second surface of at least one first battery cell is in contact with the accommodating shell; and/or an elastic piece is arranged between the second surface of at least one first battery cell and the accommodating shell in the two first battery cells arranged in a stacked mode.

As a further improvement of the scheme, the electric core group further comprises a first structural member. The first structural member is arranged between the first packaging parts of the two first battery cells which are arranged in a stacked mode, the end part, close to the first structural member, of the circuit board is connected to the first structural member, and the side, facing the first tab, of the first structural member and the side, facing the circuit board, of the first structural member both comprise insulating materials.

As a further improvement of the foregoing solution, the first tab includes a first connecting portion and a second connecting portion, the first connecting portion is connected to the first cell main body, the second connecting portion is connected to the circuit board, and the second connecting portion is bent relative to the first connecting portion.

As a further improvement of the above, the first connecting portion includes a first section and a second section. One end of the first section is connected with the first cell main body, the other end of the first section is connected with the second section, and one end of the second section, which is far away from the first section, is connected with the second connecting part. The second section is obliquely arranged relative to the first section, and the second connecting part is obliquely arranged relative to the second section.

As a further improvement of the foregoing, the first connection portion of the first battery cell is located on the circuit board as viewed in the stacking direction of the first battery cell.

As a further improvement of the above scheme, the accommodating case includes a first case and a second case fixed to the first case, a protruding portion extends from a position of an inner wall of the second case corresponding to the circuit board, and a groove is provided at one end of the protruding portion facing the circuit board. The battery includes the bolster, the bolster is located the circuit board with between the second casing, the recess is located to the bolster at least part.

As a further improvement of the above, the circuit board extends in a bent manner, and a direction in which the circuit board extends in a bent manner is the same as a direction in which the housing case extends in a bent manner. The battery core group comprises a plurality of battery cores, the battery cores are arranged at intervals along the direction of bending and extending of the circuit board, and the battery cores are electrically connected with the circuit board.

As a further improvement of the above solution, the battery cell includes a cylindrical battery cell. The axis direction of the battery cell is parallel to the axis direction surrounded by the arc-shaped extension of the accommodating shell; or the axial direction of the battery cell is perpendicular to the axial direction of the arc-shaped extension of the containing shell.

The embodiment of the application also adopts the following technical scheme for solving the technical problems:

an electric device comprises a support and the battery, wherein the battery is mounted on the support.

As a further improvement of the above solution, the electric device includes a cleaning robot. The cleaning robot comprises the support, and the inside of support is equipped with the holding chamber. The battery accept in the holding chamber, accept the shell bending extension, the one side of accepting the shell evagination is close to the inner wall setting in holding chamber, the one side of accepting the shell indent faces the center in holding chamber.

The beneficial effect of this application is:

the battery that this application embodiment provided includes and accepts shell, electric core group and circuit board. The accommodating shell extends in a bending shape, so that the accommodating shell is provided with a convex side and a concave side. The electric core group is accommodated in the accommodating shell, the circuit board is also accommodated in the accommodating shell, and the electric core group is electrically connected with the circuit board.

The battery that this application embodiment provided is the shape of bending extension, so it can adapt to the battery compartment of crooked shape in the consumer.

[ description of the drawings ]

One or more embodiments are illustrated in drawings corresponding to, and not limiting to, the embodiments, in which elements having the same reference number designation may be represented as similar elements, unless specifically noted, the drawings in the figures are not to scale.

Fig. 1 is a perspective view of one direction of a battery according to an embodiment of the present disclosure;

FIG. 2 is a perspective view of the battery of FIG. 1 in another orientation;

FIG. 3 is an exploded view of the battery of FIG. 1 in one orientation;

FIG. 4 is an exploded view of the battery of FIG. 1 in another orientation;

FIG. 5 is a schematic view of a one-directional projection of the cell of FIG. 1;

FIG. 6 is a schematic perspective view of the battery of FIG. 1 taken in a section at a first portion thereof;

FIG. 7 is an enlarged partial view of FIG. 6 at A;

fig. 8 is a schematic perspective view of the first battery cell in fig. 3;

fig. 9 is a schematic diagram of the first battery cell in fig. 3 after being unfolded;

fig. 10 is a schematic view illustrating one-directional connection between the electric core pack and the circuit board;

fig. 11 is a schematic view illustrating another direction of connection between the electric core pack and the circuit board;

FIG. 12 is an enlarged partial view of FIG. 10 at B;

FIG. 13 is an enlarged partial view at C of FIG. 11;

fig. 14 is a circuit diagram of the cells in fig. 3 connected in series in sequence;

FIG. 15 is an enlarged partial schematic view at D of FIG. 3;

FIG. 16 is an enlarged partial view of FIG. 4 at E;

FIG. 17 is a schematic perspective view of one orientation of a battery provided in accordance with another embodiment of the present application;

FIG. 18 is an exploded view in one orientation of the battery of FIG. 17;

FIG. 19 is a schematic perspective view of one orientation of a battery provided in accordance with yet another embodiment of the present application;

FIG. 20 is an exploded view of one orientation of the battery of FIG. 19;

fig. 21 is a schematic diagram of an electric device according to an embodiment of the present application.

[ detailed description ] embodiments

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 should be noted that when an element is referred to as being "fixed to"/"mounted to" another element, it can be directly on the other element or one or more intervening elements may be present therebetween. 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.

In addition, the technical features mentioned in the different embodiments of the present application described below may be combined with each other as long as they do not conflict with each other.

In this specification, the term "mounting" includes welding, screwing, clamping, adhering, etc. to fix or restrict a certain element or device to a specific position or place, the element or device may be fixed or movable in a limited range in the specific position or place, and the element or device may or may not be dismounted after being fixed or restricted in the specific position or place, and the embodiment of the present invention is not limited.

Referring to fig. 1 to 5, which respectively show a perspective view of two directions of a battery 10, an exploded view of two directions of the battery 10, and a projection view of one direction, the battery 10 (hereinafter referred to as a battery) includes a housing case 100, a battery pack 200, and a circuit board 300. The receiving case 100 is a mounting structure for the electric core assembly 200 and the circuit board 300, and extends in a curved shape. The battery cell pack 200 is accommodated in the accommodating case 100, and includes a plurality of battery cells 210. The circuit board 300 is also accommodated in the accommodating case 100, and the battery cell 210 is connected to the circuit board 300; that is, the electric core pack 200 is connected to the circuit board 300. It is worth mentioning that "several" as referred to in this application means: one or more than two integers.

Referring to fig. 1 and 2, the accommodating case 100 includes a first portion 110, a second portion 120, and a third portion 130 connected in sequence; the first portion 110 is disposed to be inclined downward relative to the second portion 120 as shown in the figure (fig. 5) and has an included angle α 1 therebetween, and the third portion 130 is disposed to be inclined downward relative to the second portion 120 as shown in the figure (fig. 5) and has an included angle α 2 therebetween, such that the first portion 110, the second portion 120 and the third portion 130 jointly enclose the recess 101. Namely: the side of the receiving shell 100 facing the concave portion 101 is a concave side, and the side of the receiving shell 100 facing away from the concave portion 101 is a convex side, that is, the receiving shell 100 has a concave side and a convex side. The angle α 1 between the first portion 110 and the second portion 120 is between 110 ° and 170 °, and the angle α 2 between the third portion 130 and the second portion 120 is between 110 ° and 170 °.

Referring to fig. 3 and fig. 4, in the present embodiment, the accommodating case 100 includes a first case 140 and a second case 150, which are disposed opposite to each other, and the first case 140 and the second case 150 are spliced to form the accommodating case 100. Referring to fig. 5, the first case 140 includes a first lower case portion 141, a second lower case portion 142, and a third lower case portion 143. The first lower case part 141 is connected to one end of the second lower case part 142, and the third lower case part 143 is connected to the other end of the second lower case part 142; wherein the first lower case portion 141 is disposed to be inclined downward with respect to the second lower case portion 142 as shown in the drawing (fig. 5), and the third lower case portion 143 is disposed to be inclined downward with respect to the second lower case portion 142 as shown in the drawing (fig. 5). The first, second and third

lower housing portions

141, 142 and 143 respectively form the recess 101 on the sides facing away from the second housing 150; the first, second, and third

lower cases

141, 142, and 143 are each recessed to face one side of the second case 150 to form a first recess 102. The second housing 150 is disposed away from the recess 101 and includes a first upper housing part 151, a second upper housing part 152, and a third upper housing part 153. The first upper case 151 is connected to one end of the second upper case 152, and the third upper case 153 is connected to the other end of the second upper case 152; wherein the first upper case portion 151 is disposed to be inclined downward with respect to the second upper case portion 152 as shown in the drawing (fig. 5), and the third upper case portion 153 is disposed to be inclined downward with respect to the second upper case portion 152 as shown in the drawing (fig. 5). The first upper housing part 151 is disposed opposite to the first lower housing part 141 and correspondingly spliced to form the first portion 110; the second upper housing part 152 is disposed opposite to the second lower housing part 142 and correspondingly joined to form the second portion 120; the third upper housing part 153 is disposed opposite to the third lower housing part 143 and is correspondingly spliced to form the third portion 130. Specifically, referring to fig. 6 and fig. 7, which respectively show a schematic perspective view of the battery 10 taken along a first part of the battery and a schematic partial enlarged view of the battery at a position a, a positioning protrusion 1401 is disposed on a side of the first casing 140 facing the second casing 150, and the positioning protrusion 1401 extends in a ring shape along an edge of a side of the first casing 140 facing the second casing 150; correspondingly, one side of the second shell 150 facing the first shell 140 is provided with a positioning groove 1501 adapted to the positioning protrusion 1401, and the positioning protrusion 1401 is inserted into the positioning groove 1501, so that the first shell 140 and the second shell 150 are positioned and installed, and the first shell 140 and the second shell 150 are further conveniently and fixedly connected in a fixing manner such as adhesion, screwing, clamping and the like. The first, second and third

upper housing portions

151, 152 and 153 are each recessed to face one side of the first housing 140 to form a second recessed portion 103, and the second recessed portion 103 and the first recessed portion 102 together constitute a receiving cavity of the receiving housing 100. Preferably, the second upper shell 152 extends in a curved shape, so as to be well adapted to a battery compartment with an inner wall having a circular arc wall surface. Preferably, the second upper housing portion 152 extends in an arc shape in part, for example, the portion of the second upper housing portion 152 connected to the first upper housing portion 151 extends in an arc shape; for example, the portion of the second upper case portion 152 connected to the third upper case portion 153 extends in an arc shape.

Further, the receiving case 100 further includes a first extending portion 111 disposed at a connection portion of the first portion 110 and the second portion 120 facing the recess 101, and the first extending portion 111 simultaneously connects the first portion 110 and the second portion 120, so as to strengthen a connection strength between the first portion 110 and the second portion 120. Preferably, the number of the first extending portions 111 is plural, and the plural first extending portions 111 are disposed at intervals along the extending direction of the edge at the connection position of the first portion 110 and the second portion 120. Similarly, to strengthen the connection strength between the second portion 120 and the third portion 130, the accommodating case 100 further includes a second extending portion 121, and the second extending portion 121 is disposed at the connection position of the second portion 120 and the third portion 130 facing the recess 101, and simultaneously connects the second portion 120 and the third portion 130. Preferably, the number of the second extending portions 121 is plural, and the plural second extending portions 121 are disposed at intervals along the extending direction of the edge at the connection of the second portion 120 and the third portion 130.

Referring to fig. 3 and fig. 4, regarding the above-mentioned battery pack 200 and the circuit board 300, the battery pack 200 includes a plurality of battery cells 210, and the plurality of battery cells 210 specifically includes a first battery cell 210a and a second battery cell 210b. The first cell 210a is disposed in the first portion 110, and the second cell 210b is disposed in the third portion 130. The circuit board 300 is disposed in the second portion 120, that is, between the first battery cell 210a and the second battery cell 210b, so that each battery cell 210 is electrically connected to the circuit board 300. Of course, the phrase "the first battery cell is disposed in the first portion" in this embodiment does not mean that the first battery cell is entirely disposed in the first portion, but means that most of the volume of the first battery cell is disposed in the first portion, for example, one end of the first battery cell close to the circuit board may slightly extend into the second portion; similarly, the phrase "the second cell is disposed in the third portion" does not mean that the second cell is entirely disposed in the third portion, but means that most of the volume of the second cell is disposed in the third portion, for example, one end of the second cell close to the circuit board may slightly protrude into the second portion.

Referring to fig. 8 to 10, which respectively illustrate a schematic perspective view of a first battery cell, a schematic view of the first battery cell after being unfolded, and a schematic view of one direction in a state that the battery cell group 200 is connected to the circuit board 300, in combination with other figures, the first battery cell 210a includes a first battery cell main body 211 and a first tab 212. The first cell main body 211 is substantially square, and is disposed obliquely with respect to the circuit board 300, and an obtuse angle β 1 is formed therebetween; in this embodiment, an included angle β 1 between the first cell main body 211 and the circuit board 300 is between 110 ° and 170 °, so as to be matched with the included angle between the second portion 120 and the first portion 110 (or the third portion 130). The first cell main body 211 specifically includes a first package member 2111, a first electrode assembly 2112 accommodated in the first package member 2111, an electrolyte filled in the first package member 2111, and the like. The first package part 2111 includes a first body portion 21111 and a first package portion 21112 extending from an end of the first body portion 21111 near the circuit board 300. The first main body portion 21111 is provided with a storage space for storing the first electrode assembly 2112 and an electrolyte; the first package portion 21112 is a portion where the first electrode assembly 2112 is housed in the first package 2111 and then sealed by a process such as heat pressing or gluing, thereby realizing packaging of the internal structure of the first package 2111. In some embodiments, the first package portion 21112 includes a first primary package portion 21113 and two first secondary package portions 21114. Specifically, the first main packaging portion 21113 is formed extending from one end of the first main body portion 21111 near the circuit board 300 to one end away from the first main body portion 21111; the first sub-packaging portions 21114 are disposed on a side of the first main packaging portion 21113 away from the first main body portion 21111, and the two first sub-packaging portions 21114 are spaced apart along an axial direction surrounded by the receiving case 100. It is worth mentioning that the "axial direction around which a certain component extends in a curved manner" in the present application means in particular: the normal direction of a plane defined by the track of a curved extension of a certain component, wherein the curved extension can be an arc extension, an S-shaped extension or an extension with other non-linear shapes.

One end of the first tab 212 extends into the first package part 2111 and is connected to the first electrode assembly 2112, and the other end extends out of the first cell main body 211 from the first package part 21112, and one end extending out of the first cell main body 211 is electrically connected to the circuit board 300. Specifically, the first tab 212 includes a first connection portion 2121 and a second connection portion 2122 connected to each other. The first connection portion 2121 is connected to the first cell body 211, and specifically, extends out of the first cell body 211 from the first sub-encapsulation portion 21114; the second connecting portion 2122 is bent with respect to the first connecting portion 2121 and connected to the circuit board 300.

Similarly, the second cell 210b includes a second cell main body and a second tab extending out of the second cell main body, and the second cell main body is disposed obliquely with respect to the circuit board 300, and an obtuse angle β 2 is formed therebetween; the second tab is electrically connected to the circuit board 300. For a specific structure of the second battery cell 210b, reference may be made to the above description of the first battery cell 210a, and details are not repeated here.

Referring to fig. 10 to 13, which respectively show two-directional connection diagrams of the battery cell assembly 200 and the circuit board 300, and partial enlarged diagrams at B and C, in the present embodiment, the battery cell assembly 200 includes two first battery cells 210a, and the two first battery cells 210a are stacked along a direction (for convenience of description, it is defined as a preset direction hereinafter) from a side of the receiving shell 100 departing from the concave portion 101 to a side of the receiving shell 100 facing the concave portion 101. Correspondingly, the circuit board 300 has a first side surface 301 and a second side surface 302 oppositely arranged along the preset direction; the first side surface 301 is disposed close to the recess 101, and the second side surface 302 is disposed away from the recess 101. In the two first battery cells 210a arranged in a stacked manner, the first tab 212 of one of the first battery cells 210 is welded to the first side surface 301, and the first tab 212 of the other first battery cell 210a is welded to the second side surface 302. The first connection portion 2121 of the first cell 210 facing away from the recess 101 is bent and includes a first section 21211 and a second section 21212, wherein one end of the first section 21211 is connected to the first cell body, the other end of the first section 21212 is connected to the second section 21212, and the end of the second section 21212 away from the first section 21211 is connected to the second connection portion 2122; the second section 21212 is inclined with respect to the first section 21211, and the second connecting portion 2122 is inclined with respect to the second section 21212. Alternatively, the first tab 212 is fixed to the circuit board 300 by welding; it is understood that in other embodiments of the present application, the first tab 212 may be fixed to the circuit board 300 by other means, such as clamping, screwing, etc.

Similarly, the battery cell group 200 includes two second battery cells 210b, and the two second battery cells 210b are stacked along the predetermined direction. The second pole ear of one second cell 210b is connected to the first side surface 301, and the second pole ear of another second cell 210b is connected to the second side surface 302. Alternatively, the second tab is fixed to the circuit board 300 by soldering; it is understood that in other embodiments of the present application, the second ear can be fixed to the circuit board 300 by other means, such as clamping, screwing, etc. The specific arrangement manner of the two second battery cells 210b is the same as that of the two first battery cells 210a, and reference may be made to the above description, which is not repeated herein.

The two first battery cells 210a arranged in a stacked manner are connected in series, the two second battery cells 210b arranged in a stacked manner are connected in series, and the whole module of the two first battery cells 210a and the whole module of the two second battery cells 210b are connected in series, that is: two first cells and two second cells are sequentially connected in series, so that the cell group 200 realizes a higher output voltage. Specifically, a conductive circuit may be disposed on the circuit board 300 to implement the series connection between the battery cells. More specifically, referring to fig. 14, which shows a circuit diagram in which the cells are sequentially connected in series, and with reference to fig. 3 and fig. 4, a negative electrode tab of the first cell 210a away from the recess 101 is electrically connected to a positive electrode tab of the first cell 210a facing the recess 101; the negative electrode tab of the first cell 210a facing the concave part 101 is electrically connected with the positive electrode tab of the second cell 210b facing the concave part 101; the negative electrode tab of the second cell 210b facing the recess is electrically connected to the positive electrode tab of the second cell 210b facing away from the recess 101. It is understood that, in other embodiments of the present application, the battery cells 210 may also be connected in other manners, such as in parallel, or in a mixed manner.

The circuit board 300 is a control module of the battery 10, and is used to provide a circuit with a series or parallel connection mode for each of the battery cells 210, and also has functions of detecting current data and voltage data of the battery cells, controlling the battery to be charged and discharged at a proper time, and performing short-circuit protection on the battery. In some embodiments, the end of the circuit board 300 proximate to a first cell 210a is disposed between the first encapsulants 21112 of adjacent first cells 210 a. Specifically, with continued reference to fig. 12, the end portion of the circuit board 300 close to the first battery cell 210a extends into between the first secondary packaging portions 21114 of two adjacent first battery cells 210 a; in this way, the end portion of the circuit board 300 may reduce risks such as a short circuit caused by the first tab 212 of the two adjacent first cells physically contacting due to deformation of the first tab 212. It should be understood that: in other embodiments of the present application, the first encapsulating portion 21112 may include only the first main encapsulating portion, and then, at this time, the end of the circuit board 300 close to the first cell 210a extends into between the first main encapsulating portions 21113 of two adjacent first cells 210 a. Referring to fig. 11 and fig. 13, which are respectively a schematic view of the first cell 210a viewed along the stacking direction and an enlarged schematic view of the first cell at C, in some embodiments, the first connection portion 2121 of the first cell 210a is located on the circuit board 300 viewed along the stacking direction of the first cell 210 a; in this way, the edge of the circuit board 300 completely exceeds the root of the first tab 212 exposed at the outer portion, so that the circuit board 300 can well separate the first tabs 212 of two adjacent first cells 210 a.

Similarly, the end of the circuit board 300 close to the second cell 210b is disposed between the second encapsulation parts of the adjacent second cells 210b. Specifically, the end of the circuit board 300 close to the second cell 210b extends into between the second secondary packaging parts of two adjacent second cells 210 b; in this way, the end portion of the circuit board 300 may reduce the risk of short circuit and the like caused by the physical contact between the second electrode lugs of the two adjacent second battery cells 210 due to the deformation of the second electrode lugs. It should be understood that: in other embodiments of the present application, the second encapsulant may only include the second main encapsulant, and at this time, the end of the circuit board 300 close to the second cell 210b extends into between the second main encapsulations of two adjacent second cells 210b. In some embodiments, the second pole ear of the second cell 210b is located on the circuit board 300, as viewed in the stacking direction of the second cell 210 b; in this way, the edge of the circuit board 300 completely exceeds the second tab and is exposed at the root of the outer portion, so that the circuit board 300 can separate the second tabs of two adjacent second cells 210b well.

Further, with reference to fig. 12, the battery cell pack 200 further includes a first structural member 220, the first structural member 220 is disposed between the first sealing portions 21112 of the two first battery cells 210a, and the end of the circuit board 300 close to the first battery cells 210a is connected to the first structural member 220. The first structural member 220 includes an insulating material on a side facing the first tab 212 and a side facing the circuit board 300, respectively, so as to prevent electrical contact between the first tabs 212 of the two first cells 210a arranged in a stacked manner. On the one hand, since the thickness of the first encapsulation portion 21112 is generally small, the arrangement of the first structure member 220 can form a support for the two first encapsulation portions 21112, reducing the risk of the first encapsulation portions 21112 collapsing toward the center of the two first encapsulation portions 21112; on the other hand, the first structural member 220 is connected to the circuit board 300, so that the first structural member 220 can support the circuit board 300, and further, the risk that the first battery cell 210a is damaged due to the movement of the circuit board 300 towards the first battery cell 210a when the battery 10 is impacted can be reduced; in another aspect, the first structural member 220 and the circuit board 300 together form a structure for separating the first tabs 212 of the two first battery cells 210a, so as to further reduce the risk of short circuit and the like caused by physical contact between the first tabs 212 of the two first battery cells 210a arranged in a stacked manner. Optionally, the first structural member 220 includes foam, which abuts against an end of the circuit board 300 close to the battery cell 210; the foam has certain elasticity, which is beneficial to the installation of the circuit board 300 on one hand, and can form a buffer effect on the circuit board 300 when the circuit board 300 is displaced on the other hand. It is understood that in other embodiments of the present application, the first structural member 220 may also include other insulating elements such as rubber, silicone, etc.

Similarly, the battery cell pack 200 further includes a second structure 221, the second structure 221 is disposed between the second packaging portions of the two second battery cells 210b, and the end of the circuit board 300 close to the second battery cells 210b is connected to the second structure 221. The second structure 221 includes an insulating material on a side facing the second tab and a side facing the circuit board 300, respectively, so as to avoid electrical contact between the second tabs of the two second cells 210b arranged in a stacked manner. On one hand, because the thickness of the second encapsulation part is generally smaller, the second structural part 221 can support the two second encapsulation parts, and the hidden danger that the second encapsulation parts collapse towards the centers of the two second encapsulation parts is reduced; on the other hand, the second structural member 221 is connected to the circuit board 300, so that the second structural member 221 can support the circuit board 300, and further, the hidden danger that the circuit board 300 moves toward the second battery cell 210b to damage the second battery cell 210b when the battery 10 is impacted can be reduced; in another aspect, the second structure 221 and the circuit board 300 together form a structure for separating the second electrode tabs of the two second battery cells 210b, so as to further reduce the risk of short circuit and the like caused by physical contact between the second electrode tabs of the two second battery cells 210b arranged in a stacked manner. Optionally, the second structural member 221 includes foam, and the foam abuts against an end of the circuit board 300 close to the second battery cell 210 b; the foam has certain elasticity, which is beneficial to the installation of the circuit board 300 on one hand and can form a buffer effect on the circuit board 300 when the circuit board 300 displaces on the other hand. It is understood that in other embodiments of the present application, the second structural member 221 may also include other insulating elements such as rubber, silicon, etc.

Further, referring to fig. 10 and fig. 12, the first cell main body 211 includes a first surface 201 and a second surface 202 that are oppositely disposed along the stacking direction of the first battery cells 210a, and the first surface 201 of the first battery cell 210a is adjacently disposed. The distance between the first package portion 21112 and the first surface 201 is greater than the distance between the first package portion 21112 and the second surface 202; the design is intended to increase the distance between the first encapsulating portions 21112 on the two first cells 210a, that is, the distance between the first tabs 212 on different first cells 210a is increased, so as to reduce the hidden danger of the contact of the first tabs 212 on different first cells 210a, and facilitate the end portion of the circuit board 300 to extend into the space between the first encapsulating portions 21112 of the two first cells 210. Preferably, in the two first battery cells 210a arranged in a stacked manner, the second surface 202 of one first battery cell 210a is in contact with the housing case 100, so as to improve the heat dissipation effect of the battery cell pack 200; an elastic member 230 is embedded between the second surface 202 of the other first cell 210a and the housing case 100, so as to reduce an impact force between the cell 210 and the housing case 100 when the cell 210 moves relative to the housing case 100. Optionally, the elastic member 230 comprises foam; of course, in other embodiments of the present application, the elastic member 230 may be other elastic elements such as rubber, high-elasticity sponge, etc. It is understood that in other embodiments of the present application, in the same battery cell pack 200, the second surfaces 202 of the two battery cells 210 may both contact the housing case 100, or the elastic members 230 may be disposed between the second surfaces 202 of the two battery cells 210 and the housing case 100.

Similarly, the second cell main body includes a third surface and a fourth surface that are oppositely disposed in the stacking direction of the second battery cell 210b, and the third surface 201 of the second battery cell 210b is adjacently disposed. The distance between the second packaging part and the third surface is larger than the distance between the second packaging part and the fourth surface; the design is intended to increase the distance between the second encapsulating portions of the two second cells 210b, that is, the distance between the second electrode tabs of different second cells 210b is increased, so as to reduce the hidden danger of the contact between the second electrode tabs of different second cells 210b, and facilitate the end portion of the circuit board 300 extending into the space between the second encapsulating portions of the two second cells 210b. Preferably, in two second battery cells 210b arranged in a stacked manner, a fourth surface of one second battery cell 210b is in contact with the housing case 100, so as to improve the heat dissipation effect of the battery cell pack 200; the elastic element 230 is embedded between a fourth surface of another second battery cell 210b and the housing case 100, so as to reduce an impact force between the second battery cell 210b and the housing case 100 when the second battery cell 210b moves relative to the housing case 100. It is understood that in other embodiments of the present application, in the two second battery cells 210b stacked in layers, the fourth surfaces of the two second battery cells 210b may both contact the housing case 100, or the elastic member 230 may be disposed between the fourth surfaces of the two second battery cells 210b and the housing case 100.

It should be noted that the battery cell 210 described in this application includes a soft-package battery cell, but in other embodiments of the application, the battery cell 210 may also be a steel-shell battery cell, and the specific type thereof is not limited herein. It should be further noted that the first surface 201 and the second surface 202 of the first battery cell 210a are both flat plate structures, and correspondingly, the wall surfaces of the first casing 140 and the second casing 150 respectively opposite to the second surface 202 are also flat structures, so as to ensure that the first battery cell 210a can be fitted to the inner wall of the accommodating case 100 when being mounted in the accommodating case 100. Similarly, the third surface and the fourth surface of the second electrical core 210b are flat plate structures, and correspondingly, the wall surfaces of the first casing and the second casing opposite to the fourth surface are also flat structures, so that when the second electrical core 210b is installed in the accommodating case 100, the second electrical core can be fitted to the inner wall of the accommodating case 100.

Next, a supplementary explanation will be given of the mounting method of the circuit board 300.

Referring to fig. 15 and 16, which respectively show a partial enlarged view at D in fig. 3 and a partial enlarged view at E in fig. 4, and in combination with other figures, the circuit board 300 is accommodated in the second portion 120, the inner wall of the first housing 140 is provided with a supporting portion 144, and the circuit board 300 is mounted on the supporting portion 144; meanwhile, a buffer member 310 (fig. 3) having elasticity is embedded between a side of the circuit board 300 away from the supporting portion 144 and the second housing 150, so that the circuit board 300 is stably mounted on the receiving case 100. Specifically, a protrusion 154 extends from the inner wall of the second housing 150 at a position corresponding to the circuit board 300, a groove 104 is disposed at one end of the protrusion 154 facing the circuit board 300, one end of the buffer member 310 abuts against the circuit board 300, and the other end extends into the groove 104, that is, the buffer member 310 is at least partially disposed in the groove 104. In this embodiment, the buffer 310 comprises foam; it is understood that, in other embodiments of the present application, the buffer 310 may be other elastic elements such as rubber, high-elasticity sponge, etc. Preferably, the inner wall of the second housing 150 extends in the groove 104 to form an abutting portion 155, and a side of the abutting portion 155 facing the circuit board 300 is parallel to the second side surface 302, so that the buffer member 310 can be configured in a simple block shape without adapting an end of the buffer member 310 away from the circuit board 300 to the shape of the second housing 150.

Further, in order to facilitate the positioning and installation of the circuit board 300 and the first housing 140, the supporting portion 144 is provided with a positioning post 145 extending toward the circuit board 300, and the circuit board 300 is provided with a positioning hole 303 adapted to the positioning post 145; the positioning posts 145 are inserted into the positioning holes 303 to complete the positioning of the circuit board 300 and the first housing 140, thereby facilitating the assembly of the circuit board 300. It is understood that in other embodiments of the present application, positioning pillars may be further disposed on the circuit board 300, and the protruding portion 144 is disposed with matching positioning holes, and the positioning pillars and the positioning holes cooperate together to assist the installation of the circuit board 300.

The battery 10 provided by the embodiment of the present application includes a receiving case 100, a battery pack 200, and a circuit board 300. The accommodating shell 100 extends in a curved shape, so that the accommodating shell 100 has a convex side and a concave side. The battery cell pack 200 is accommodated in the accommodating case 100, and includes a plurality of battery cells 210. The circuit board 300 is also accommodated in the accommodating case 100, and the battery cell 210 is electrically connected to the circuit board 300.

The battery 10 provided by the embodiment of the present application is in a shape extending in a curved manner, so that the battery can be adapted to a curved battery compartment in an electric device.

Based on the same inventive concept, the present application also provides another battery 10', please refer to fig. 17 and fig. 18, which respectively show a perspective view and an exploded view of the battery 10', the battery 10' (hereinafter, referred to as a battery), the battery 10' includes a housing case 100', a battery pack 200', and a circuit board 300'. The receiving case 100 'is a mounting structure of the electric core assembly 200' and the circuit board 300', and extends in a curved shape, so that the receiving case 100' has a convex side and a concave side. The battery cell set 200' is received in the receiving case 100', which includes a plurality of battery cells 210'. The circuit board 300 'is also received in the receiving case 100', and the battery cell 210 'is connected to the circuit board 300'.

Referring to fig. 17 and 18, the accommodating case 100 'extends in an arc shape, such that the accommodating case 100' has a concave side and a convex side. In this embodiment, the accommodating case 100' includes a first case 110' and a second case 120'. The first housing 110 'includes a bottom wall 111' extending in an arc shape, and a side wall 112 'extending perpendicularly from an edge of the bottom wall 111'; the second housing 120' is fixed to the side wall 112' facing away from the bottom wall 111' and closes off the end of the side wall 112' facing away from the bottom wall 111 '. Optionally, the bottom wall 111 'is integrally formed with the side wall 112'; it is understood that in other embodiments of the present application, the bottom wall 111 'and the side wall 112' may be formed separately and then fixedly connected by the fixing element.

Referring to fig. 18, the circuit board 300' is disposed opposite to the second housing 120' and extends in a bending direction of the housing case 100', with respect to the electric core assembly 200' and the circuit board 300'. The battery pack 200 'includes a plurality of battery cells 210', the plurality of battery cells 210 'are arranged at intervals along the direction in which the circuit board 300' extends in a bending manner, and each battery cell 210 'is electrically connected to the circuit board 300'. Preferably, the battery cell 210 'includes a cylindrical battery cell, and the axial direction of the cylindrical battery cell is parallel to the axial direction around which the housing case 100' extends arcuately.

The battery 10 'provided by the embodiment of the application is also in a curved and extended shape, so that the battery 10' can be adapted to a curved battery compartment in electric equipment.

Based on the same inventive concept, the present application further provides another battery 10 ″, referring to fig. 19 and fig. 20, which respectively show a schematic perspective view and an exploded schematic view of the battery 10 ″, wherein the battery 10 ″ (hereinafter, referred to as a battery) includes a housing case 100 ″, a battery cell pack 200 ″, and a circuit board 300 ″. Wherein, the housing case 100 "is a mounting structure of the electric core set 200" and the circuit board 300 ", and extends in a curved shape, so that the housing case 100" has a convex side and a concave side. The battery cell pack 200 "is housed in a housing case 100" which includes a plurality of battery cells 210 ". The circuit board 300 "is also accommodated in the accommodating case 100", and the battery cell 210 "is connected to the circuit board 300".

Referring to fig. 19 and 20, in the present embodiment, the accommodating case 100 "includes a rear case 110", a front case 120 ", and a second case 130". Wherein, the rear shell 110 "and the front shell 120" both extend in an arc shape, and the concave side of the rear shell 110 "is arranged towards the convex side of the front shell 120"; and one side of the rear housing 110 "facing the front housing 120" is concaved inwards to form a first receiving cavity extending in an arc shape for receiving the electric core pack 200. The second housing 130 "is fixed to one end of the rear housing 110" in the axial direction surrounded by the rear housing 110 "and integrally covers the rear housing 110" and the front housing 120 "; one side of the second housing 130 facing the rear housing 110 ″ is concaved to form a second receiving cavity extending in an arc shape for receiving the circuit board 300 ″. The arc extending directions of the first accommodating cavity and the second accommodating cavity are the same as the arc extending direction of the rear shell 110 ″.

Referring to fig. 18, the circuit board 300 "is received in the second receiving cavity and bent to extend along a direction bent to extend with the receiving case 100" for the above core pack 200 "and the circuit board 300". The battery pack 200 "includes a plurality of battery cells 210", the plurality of battery cells 210 "are arranged at intervals along the direction in which the circuit board 300" extends in a curved manner, and each battery cell 210 "is electrically connected to the circuit board 300". Cell 210 "comprises a cylindrical cell; unlike the previous embodiment, in the present embodiment, the axial direction of the cylindrical battery cells is perpendicular to the axial direction around which the housing case 100 "extends in an arc shape, and the battery cells 210 in the same battery cell group 200" are connected in an arc shape. Alternatively, battery 10 "includes two sets of electrical core assemblies 200", with the two sets of electrical core assemblies 200 "being spaced apart along the axis about which housing shell 100" extends arcuately.

The battery 10 ″ provided by the embodiment of the present application also has a curved and extended shape, so that it can be adapted to a curved battery compartment in an electric device.

Based on the same inventive concept, the application also provides electric equipment. Specifically, referring to fig. 21, which shows a schematic view of the electric device 1, the electric device 1 includes a bracket 20 and a battery in any of the above embodiments, and the battery is mounted on the bracket 20. In this embodiment, the electric device 1 includes a circular cleaning robot including the bracket 20 and the battery; next, a specific configuration of the electric device 1 will be described by taking as an example that the cleaning robot includes the battery 10; it is understood that, in other embodiments of the present application, the electric device 1 may also be an electric vehicle, an electric cooker, or other electric devices.

The electric device 1 includes a support 20, a battery 10, and other components, such as a motor, a blower, etc. The bracket 20 is generally cylindrical, and has an accommodating cavity 21 therein for accommodating the battery 10 and the above-mentioned motor. The accommodating cavity 21 specifically includes a cylindrical first accommodating space 21a formed by expanding outward from an axis of the accommodating cavity 21, and an annular second accommodating space 21b surrounding an outer periphery of the first accommodating space 21a, and the second accommodating space 21b is located between the first accommodating space 21a and an inner wall of the accommodating cavity 21.

Most of the components except the battery 10 in the accommodation chamber 21 are disposed in the above-described first accommodation space 21a; the second receiving space 21b includes a curved battery compartment region for accommodating the battery 10, and the battery 10 is disposed in the battery compartment region. Specifically, the receiving case 100 of the battery 10 extends in a curved manner to form a concave side and a convex side, the concave side of the receiving case 100 is disposed toward the center of the receiving cavity 21, and the convex side of the receiving case 100 is disposed close to or attached to the inner wall of the receiving cavity 21.

Cleaning machines in the existing market, all devices including batteries in the accommodating cavities are intensively arranged in the first accommodating space, the arrangement of the second accommodating space aims at avoiding the interference between the outline of peripheral devices and the inner wall of the first accommodating space 21a, but the second accommodating space is difficult to utilize, namely, the space utilization rate of the cleaning machines is low, and the miniaturization design is difficult to realize. The battery 10 in this embodiment can well utilize the annular second accommodating space 21b in the electrical device 1, so that the volume of the first accommodating space 21a can be effectively reduced, the overall volume of the cleaning robot is further reduced, and the cleaning robot is beneficial to realizing the miniaturization design.

Further, in order to make the energy of the battery 10 as much as possible, the maximum volume of the battery 10 should be ensured, that is, the volumes of the first portion 110, the second portion 120 and the third portion 130 are made as large as possible, and then, the method of determining the maximum volume of the first portion 110 is taken as an example to be described, specifically as follows:

the first portion 110 extends straight when the height and inner diameter R of the second accommodating space 21b ₁ And outer diameter R ₂ It is determined that the cross-sectional area of the first portion 110 perpendicular to the axis of the receiving cavity 21 is maximized. For convenience of description, the following formula is obtained when the width of the first portion 110 in the cross section is defined as width T, the length of the first portion 110 in the cross section is defined as length L, and the cross-sectional area of the first portion 110 perpendicular to the axis of the accommodating cavity 21 is defined as area S:

S＝TL； (2)

the applicant can determine from the above two formulae when

When the utility model is used, the water is discharged,

when this is the case, the area S is the largest.

In addition, the determination manner of the maximum volume of the third portion 130 and the second portion 110 is substantially the same, and is not repeated herein.

The battery 10 of the electric equipment 1 provided by the embodiment of the application is in a shape extending in a bending way, so that the battery 10 can be adapted to a battery compartment in the electric equipment 1 in the bending way, and the space utilization rate of the electric equipment 1 is high.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; within the context of the present application, where technical features in the above embodiments or in different embodiments can also be combined, the steps can be implemented in any order and there are many other variations of the different aspects of the present application as described above, which are not provided in detail for the sake of brevity; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments can still be modified, or technical features of the housing can be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery, comprising:

the accommodating shell extends in a bent shape and comprises a first part, a second part and a third part which are sequentially connected, the first part is obliquely arranged relative to the second part, the third part is obliquely arranged relative to the second part, and the first part, the second part and the third part jointly enclose to form a concave part;

the electric core group is accommodated in the accommodating shell; and

the circuit board is accommodated in the accommodating shell, and the electric core group is electrically connected with the circuit board.

2. The battery of claim 1, wherein the battery cell group comprises a plurality of battery cells, and the battery cells are electrically connected to the circuit board.

3. The battery of claim 2, wherein the circuit board is disposed on the second portion;

the battery core group comprises a first battery cell and a second battery cell, the first battery cell is arranged in the first part, and the second battery cell is arranged in the third part.

4. The battery of claim 3, wherein the first cell comprises a first cell body and a first tab extending out of the first cell body, the first cell body being disposed at an angle with respect to the circuit board, the first tab being electrically connected to the circuit board;

the second battery cell comprises a second battery cell main body and a second lug extending out of the second battery cell main body, the second battery cell main body is arranged opposite to the circuit board in an inclined mode, and the second lug is electrically connected with the circuit board.

5. The battery of claim 4, wherein an included angle between the first cell body and the circuit board is between 110 ° and 170 °.

6. The battery of claim 4, wherein the battery pack comprises two first cells and two second cells, wherein the two first cells are stacked and the two second cells are stacked;

the circuit board comprises a first side surface and a second side surface which are oppositely arranged, wherein a first electrode lug of one first battery cell is connected to the first side surface, a first electrode lug of the other first battery cell is welded to the second side surface, a second electrode lug of one second battery cell is connected to the first side surface, and a second electrode lug of the other second battery cell is welded to the second side surface.

7. The battery of claim 6, wherein the first cell body comprises a first main body part and a first packaging part formed by extending from one end of the first main body part close to the circuit board, and the first tab extends out of the first cell body from the first packaging part;

the end part of the circuit board close to the first battery cells is arranged between the first packaging parts of the two first battery cells.

8. The battery of claim 7, wherein the first packaging part comprises a first main packaging part and two first auxiliary packaging parts, the first main packaging part is formed by extending from one end of the first main body part close to the circuit board, and the first auxiliary packaging part is arranged on one side of the first main packaging part, which is far away from the first main body part;

the first battery cell comprises two tabs, each first tab corresponds to one of the first auxiliary packaging parts, the first tabs extend out of the first battery cell main body from the first auxiliary packaging parts, and the end part of the circuit board close to the first battery cell is arranged between the two first auxiliary packaging parts.

9. The battery of claim 7, wherein two first cells arranged in a stack comprise the first cell body comprising a first surface and a second surface oppositely arranged in the stacking direction of the first cells, and wherein the first surfaces of the adjacent first cells are adjacently arranged;

the distance between the first packaging part and the first surface is greater than the distance between the first packaging part and the second surface, and the end part of the circuit board close to the first battery cell is arranged between the first packaging parts of the adjacent first battery cells.

10. The battery of claim 9, wherein;

in two first battery cells arranged in a stacked manner, the second surface of at least one first battery cell is in contact with the accommodating shell; and/or the presence of a gas in the gas,

in two first battery cells arranged in a stacked manner, an elastic piece is arranged between the second surface of at least one first battery cell and the accommodating shell.

11. The battery of claim 7, wherein the battery pack further comprises a first structural member;

the first structural member is arranged between the first packaging parts of the two first battery cells which are arranged in a stacked mode, the end part, close to the first structural member, of the circuit board is connected to the first structural member, and the side, facing the first tab, of the first structural member and the side, facing the circuit board, of the first structural member both comprise insulating materials.

12. The battery of claim 11, wherein the first tab includes a first connection portion and a second connection portion, the first connection portion is connected to the first cell main body, the second connection portion is connected to the circuit board, and the second connection portion is bent relative to the first connection portion.

13. The battery of claim 12, wherein the first connection comprises a first section and a second section;

one end of the first section is connected with the first cell main body, the other end of the first section is connected with the second section, and one end of the second section, which is far away from the first section, is connected with the second connecting part;

the second section is obliquely arranged relative to the first section, and the second connecting part is obliquely arranged relative to the second section.

14. The battery of claim 12, wherein the first connection portion of the first cell is located on the circuit board, as viewed in a stacking direction of the first cell.

15. The battery of claim 1, wherein the housing case comprises a first case and a second case fixed to the first case, a protrusion extends from an inner wall of the second case at a position corresponding to the circuit board, and a groove is formed at an end of the protrusion facing the circuit board;

the battery comprises a buffer piece, the buffer piece is arranged between the circuit board and the second shell, and at least part of the buffer piece is arranged in the groove.

16. The battery according to claim 1, wherein the circuit board extends in a bent manner, and a direction in which the circuit board extends in a bent manner is the same as a direction in which the receiving case extends in a bent manner;

the battery core group comprises a plurality of battery cores, the battery cores are arranged at intervals along the direction of bending and extending of the circuit board, and the battery cores are electrically connected with the circuit board.

17. The battery of claim 16, wherein the cells comprise cylindrical cells;

the axis direction of the battery cell is parallel to the axis direction surrounded by the arc-shaped extension of the accommodating shell; or,

the axial direction of the battery cell is perpendicular to the axial direction of the arc-shaped extension of the containing shell.

18. An electrical device, comprising:

a support; and

the battery of any one of claims 1-17, said battery mounted to said bracket.

19. The powered device of claim 18, wherein the powered device comprises a cleaning robot;

the cleaning robot comprises the bracket, and an accommodating cavity is formed in the bracket;

the battery is contained in the containing cavity, the containing shell extends in a bending mode, one side, protruding outwards, of the containing shell is close to the inner wall of the containing cavity, and one side, recessed inwards, of the containing shell faces towards the center of the containing cavity.