CN216436048U - Battery and power consumption device - Google Patents

Abstract

The application relates to new forms of energy technical field, concretely relates to battery and electric installation, the battery includes: a battery cell; the mounting plate is arranged on one side of the battery monomer along the first direction; the insulating piece is arranged between the single battery and the mounting plate so as to insulate and isolate the single battery and the mounting plate; the insulating member includes a telescopic portion configured to be telescopic in a second direction so as to adapt the insulating member to a size of the battery cell in the second direction, and the second direction is perpendicular to the first direction. In this way, the dimensional tolerance problem when insulating part and battery monomer assembly can be solved in this application, promotes the insulating properties of battery.

Description

Battery and power consumption device

Technical Field

The application relates to the technical field of new energy, in particular to a battery and a power utilization device.

Background

The battery is generally including arranging a plurality of battery monomer that set up, and the free outside of battery of head end and tail end need set up the mounting panel and realize realizing the free spacing fixed of battery, and the mounting panel adopts metal material in order to guarantee battery overall structure's stability usually, and the current reachs mounting panel department and takes place the dangerous condition when avoiding the battery electric leakage, needs set up the insulating part between battery monomer and mounting panel.

The inventor of the present application found in research that the insulation performance of the assembled battery is poor because the insulation member has a certain tolerance with the size of the battery cell during the production process.

SUMMERY OF THE UTILITY MODEL

In view of the above problem, the present application provides a battery and an electric device to can solve the dimensional tolerance problem when insulating part and battery monomer assemble, promote the insulating properties of battery.

According to an aspect of the present application, there is provided a battery including: a battery cell; the mounting plate is arranged on one side of the battery monomer along the first direction; the insulating piece is arranged between the single battery and the mounting plate so as to insulate and isolate the single battery and the mounting plate; the insulating member includes a telescopic portion configured to be telescopic in a second direction so as to adapt the insulating member to a size of the battery cell in the second direction, and the second direction is perpendicular to the first direction.

Through set up the insulating part between battery monomer and mounting panel for battery monomer and mounting panel mutual insulation keep apart, through set up on the insulating part along second direction telescopic portion, make the insulating part can carry out the size regulation in the second direction, and then suit with battery monomer at the size of second direction, in order to guarantee good insulating properties between battery monomer and the mounting panel, promote battery stability and security.

In an alternative form, the bellows comprises a wave-shaped fold. The folding structure can not only realize size adaptation adjustment between the single battery and the insulating part, but also realize space isolation through the gap formed between each reciprocating folding section and the single battery surface, thereby further ensuring the insulating property.

In an alternative mode, the insulating member further includes a body portion, an inner surface of the body portion abuts against the battery cell, and the folding structure is disposed at one end of the body portion along the second direction, and protrudes towards a side away from the battery cell along the first direction. Set up beta structure as following the first direction towards deviating from the free one side protrusion of battery to when beta structure compression is folding, beta structure and battery monomer can not produce the structure and interfere, guarantee the abundant contact between insulating part and the battery monomer, and then guarantee the insulating properties of battery.

In an alternative form, the surface of the mounting plate facing the insulating member is provided with a receiving slot for receiving the folded structure. Through setting up the holding tank on the mounting panel, provide the accommodation space for the beta structure after the compression is folding, avoid producing the structure between beta structure and the mounting panel and interfere.

In an alternative, the insulator further includes a body portion having an internal cavity in which at least a portion of the telescoping portion is received, the telescoping portion being configured to be slidably disposed in the internal cavity along the second direction. A part of the structure of the telescopic part can be slidably accommodated in the inner cavity, and the size of the insulating part in the second direction is adjusted by sliding the telescopic part relative to the body part along the second direction.

In an optional mode, the second direction is a height direction of the single battery, the single battery comprises a first end face and a second end face, the first end face is perpendicular to the second direction, and the first end face is closer to the expansion part than the second end face; one end of the telescopic part, which is far away from the body part, is provided with a first folding edge, and the first folding edge extends along a first direction to cover at least part of the first end surface. Set up first hem through the one end that deviates from this somatic part at pars contractilis for the pars contractilis is adjusts to corresponding size after, and the internal surface on first hem can with the mutual butt of first terminal surface, realize spacing fixed to pars contractilis, and first hem still wraps up the protection to the edge of battery monomer bottom, avoids the blue membrane damage of edge department. And after the battery is assembled, the first folded edge supports the bottom of the battery monomer, so that a gap is formed between the first end face of the battery monomer and an end plate or other structures at the bottom of the battery monomer, the creepage distance is increased, and the safety performance of the battery is improved.

In an alternative form, an end of the body portion facing away from the telescopic portion is provided with a second flap extending in the first direction to cover at least part of the second end face. Set up the second hem through the one end that deviates from the pars contractilis at this somatic part, realize the protection to battery monomer top edge, increase the creepage distance at battery monomer top, promote the security performance.

In an alternative mode, the single battery cell comprises a third end face and a fourth end face perpendicular to a third direction, the third direction is perpendicular to the first direction and the second direction, the two ends of the main body portion along the third direction are respectively provided with a third folded edge, and the third folded edges extend along the first direction to cover at least part of the third end face and at least part of the fourth end face. Through set up the third hem on this somatic part, realize the protection to the free third terminal surface of battery and fourth terminal surface department edge, increase the creepage distance of the free both sides of battery.

In an alternative mode, in the second direction, the ratio of the size of the body part to the size of the battery cell is greater than or equal to 0.8. Through setting up the size of this somatic part and the size of battery monomer to be greater than or equal to 0.8 in the second direction, can effectively guarantee this somatic part and cover the central area on the great side of battery monomer, provide good confining force for the battery monomer, guarantee the structural stability of battery.

According to another aspect of the present application, there is provided an electric device including the battery of any one of the above.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the contents of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following description will particularly refer to specific embodiments of the present invention.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a schematic structural diagram of a vehicle according to an embodiment of the present disclosure;

fig. 2 is an exploded schematic view of a battery provided in an embodiment of the present application;

fig. 3 is an exploded schematic view of a battery cell provided in an embodiment of the present application;

fig. 4 is an exploded view of a battery according to an embodiment of the present disclosure;

fig. 5 is a schematic side view of a battery according to an embodiment of the present disclosure;

fig. 6 is a schematic cross-sectional view of an insulating member in a battery according to another embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of an insulating member in a battery according to an embodiment of the present disclosure.

The reference numbers in the detailed description are as follows:

a vehicle 1000;

battery 100, controller 200, motor 300;

a box body 10, a first part 11, a second part 12;

a battery cell 20, an end cap 21, an electrode terminal 21a, a case 22, an electrode assembly 23, a tab 23a, a first end face 24, a second end face 25, a third end face 26, a fourth end face 27;

the mounting plate 30, the receiving groove 31, the insulating member 40, the expansion part 41, the folding structure 411, the body part 42, the inner cavity 421, the first folded edge 43, the second folded edge 44, and the third folded edge 45.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present application more clearly, and therefore are only used as examples, and the protection scope of the present application is not limited thereby.

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 herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only for distinguishing different objects, and are not to be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary-secondary relationship of the technical features indicated. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is only one kind of association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B, and may mean: there are three cases of A, A and B, and B. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two sets), "plural pieces" refers to two or more (including two pieces).

In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the directions or positional relationships indicated in the drawings, and are only for convenience of description of the embodiments of the present application and for simplicity of description, but do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

At present, the application of the battery is more and more extensive from the development of market situation. The battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles and the like, and a plurality of fields such as military equipment and aerospace. As the field of application of batteries is continuously expanded, the market demand thereof is also continuously expanded.

The battery generally includes a plurality of battery monomer of arranging in proper order to be provided with one in a plurality of power module in order to constitute the battery at a plurality of battery monomer's both ends, in order to guarantee the holistic structural strength of battery and stability, the mounting panel adopts the higher metal material of intensity to make usually, and when adopting the metal material just to lead to the inside electric leakage that takes place of battery easily, the electric current can be transmitted to the mounting panel on, thereby take place dangerous condition such as electric shock. In order to avoid dangerous situations, during battery assembly, an insulating part made of plastic or other non-conductive materials is arranged between the single battery and the mounting plate, so that the single battery and the mounting plate are mutually insulated.

The inventor of the application notices that when the size adaptation degree between insulating part and the battery monomer is higher, the insulating effect is better, and because the insulating part will have size tolerance inevitably when processing in production, consequently can lead to the insulating properties of battery uneven, if the size tolerance of insulating part is great, not only can lead to the insulating properties greatly reduced of battery, still can make the battery internal stress after the assembly great to influence the structural stability of battery.

Based on this, this application proposes a battery, and insulating part in the battery includes the pars contractilis, through the scalable characteristic of pars contractilis for the size of insulating part can be adjusted, and then ensures insulating part and the free size looks adaptation of battery, with the insulating barrier propterty of reinforcing insulating part to battery monomer and mounting panel.

The battery disclosed in the embodiment of the present application can be used in electric devices such as vehicles, ships or aircrafts, but not limited thereto.

The embodiment of the application provides an electric device using a battery as a power supply, wherein the electric device can be but is not limited to a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric automobile, a ship, a spacecraft and the like. The electric toy may include a stationary or mobile electric toy, such as a game machine, an electric car toy, an electric ship toy, an electric airplane toy, and the like, and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, and the like.

For convenience of description, the following embodiments take an example in which a power consuming apparatus according to an embodiment of the present application is a vehicle 1000.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1000 according to some embodiments of the present disclosure. The vehicle 1000 may be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile may be a pure electric automobile, a hybrid electric automobile, or a range-extended automobile, etc. The battery 100 is provided inside the vehicle 1000, and the battery 100 may be provided at the bottom or the head or the tail of the vehicle 1000. The battery 100 may be used for power supply of the vehicle 1000, for example, the battery 100 may serve as an operation power source of the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300, the controller 200 being configured to control the battery 100 to supply power to the motor 300, for example, for starting, navigation, and operational power requirements while the vehicle 1000 is traveling.

In some embodiments of the present application, the battery 100 may be used not only as an operating power source of the vehicle 1000, but also as a driving power source of the vehicle 1000, instead of or in part of fuel or natural gas, to provide driving power for the vehicle 1000.

Referring to fig. 2, fig. 2 is a schematic diagram illustrating an exploded structure of a battery 100 according to some embodiments of the present disclosure. The battery 100 includes a case 10 and a battery cell 20, and the battery cell 20 is accommodated in the case 10. The case 10 is used to provide a receiving space for the battery cells 20, and the case 10 may have various structures. In some embodiments, the case 10 may include a first portion 11 and a second portion 12, the first portion 11 and the second portion 12 cover each other, and the first portion 11 and the second portion 12 together define a receiving space for receiving the battery cell 20. The second part 12 may be a hollow structure with one open end, the first part 11 may be a plate-shaped structure, and the first part 11 covers the open side of the second part 12, so that the first part 11 and the second part 12 jointly define a containing space; the first portion 11 and the second portion 12 may be both hollow structures with one side open, and the open side of the first portion 11 may cover the open side of the second portion 12. Of course, the case 10 formed by the first and second portions 11 and 12 may have various shapes, such as a cylinder, a rectangular parallelepiped, and the like.

In the battery 100, the number of the battery cells 20 may be multiple, and the multiple battery cells 20 may be connected in series or in parallel or in series-parallel, where in series-parallel refers to both series connection and parallel connection among the multiple battery cells 20. The plurality of battery cells 20 can be directly connected in series or in parallel or in series-parallel, and the whole formed by the plurality of battery cells 20 is accommodated in the box body 10; of course, the battery 100 may also be formed by connecting a plurality of battery cells 20 in series, in parallel, or in series-parallel to form a battery module, and then connecting a plurality of battery modules in series, in parallel, or in series-parallel to form a whole, and accommodating the whole in the case 10. The battery 100 may further include other structures, for example, the battery 100 may further include a bus member for achieving electrical connection between the plurality of battery cells 20.

Wherein each battery cell 20 may be a secondary battery or a primary battery; but is not limited to, a lithium sulfur battery, a sodium ion battery, or a magnesium ion battery. The battery cell 20 may be cylindrical, flat, rectangular parallelepiped, or other shape.

Referring to fig. 3, fig. 3 is an exploded schematic view of a battery cell 20 in a battery 100 according to some embodiments of the present disclosure. The battery cell 20 refers to the smallest unit constituting the battery. As shown in fig. 3, the battery cell 20 includes an end cap 21, a case 22, an electrode assembly 23, and other functional components.

The end cap 21 refers to a member that covers an opening of the case 22 to isolate the internal environment of the battery cell 20 from the external environment. Without limitation, the shape of the end cap 21 may be adapted to the shape of the housing 22 to fit the housing 22. Alternatively, the end cap 21 may be made of a material (e.g., an aluminum alloy) having a certain hardness and strength, so that the end cap 21 is not easily deformed when being impacted, and the battery cell 20 may have a higher structural strength and improved safety. The end cap 21 may be provided with functional components such as the electrode terminals 21 a. The electrode terminals 21a may be used to be electrically connected with the electrode assembly 23 for outputting or inputting electric energy of the battery cells 20. In some embodiments, the end cap 21 may further include a pressure relief mechanism for relieving the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold value. The material of the end cap 21 may be various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present invention is not limited thereto. In some embodiments, insulation may also be provided on the inside of the end cap 21, which may be used to isolate the electrical connection components within the housing 22 from the end cap 21 to reduce the risk of short circuits. Illustratively, the insulator may be plastic, rubber, or the like.

The case 22 is an assembly for mating with the end cap 21 to form an internal environment of the battery cell 20, wherein the formed internal environment may be used to house the electrode assembly 23, electrolyte, and other components. The housing 22 and the end cap 21 may be separate components, and an opening may be formed in the housing 22, and the opening may be covered by the end cap 21 to form the internal environment of the battery cell 20. Without limitation, the end cap 21 and the housing 22 may be integrated. The housing 22 may be a variety of shapes and sizes, such as rectangular parallelepiped, cylindrical, hexagonal prism, etc. Specifically, the shape of the case 22 may be determined according to the specific shape and size of the electrode assembly 23. The material of the housing 22 may be various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not limited in the embodiments of the present invention.

The electrode assembly 23 is a part in which electrochemical reactions occur in the battery cell 20. One or more electrode assemblies 23 may be contained within the case 22. The electrode assembly 23 is mainly formed by winding or stacking a positive electrode sheet and a negative electrode sheet, and a separator is generally disposed between the positive electrode sheet and the negative electrode sheet. The portions of the positive and negative electrode tabs having the active material constitute the body portion of the electrode assembly, and the portions of the positive and negative electrode tabs having no active material each constitute the tab 23 a. The positive electrode tab and the negative electrode tab can be positioned at one end of the body part together or at two ends of the body part respectively. During the charge and discharge of the battery, the positive and negative active materials react with the electrolyte, and the tab 23a is connected to the electrode terminal to form a current loop.

According to an aspect of an embodiment of the present application, a battery is provided, and referring to fig. 4, an exploded structure of the battery 100 according to an embodiment of the present application is shown. The battery 100 includes a battery cell 20, a mounting plate 30, and an insulating member 40, the mounting plate 30 being disposed at one side of the battery cell 20 in a first direction, and the insulating member 40 being disposed between the battery cell 20 and the mounting plate 30 to insulate and isolate the battery cell 20 from the mounting plate 30. The insulating member 40 includes a stretchable portion 41, and the stretchable portion 41 is configured to be stretchable in a second direction to adapt the insulating member 40 to a dimension of the battery cell 20 in the second direction, which is perpendicular to the first direction.

It should be noted that, in the specific embodiment shown in fig. 4, the x-axis direction represents a first direction, the y-axis direction represents a second direction, and the telescopic portion 41 can be extended and contracted along the y-axis direction in the drawing, so that the insulating member 40 and the battery cell 20 are adapted to have the same size in the y-axis direction, that is, the insulating member 40 and the battery cell 20 are adapted to have the same size in the height direction.

It is understood that, in other embodiments, the second direction may also be a z-axis direction shown in fig. 4, the expansion part 41 is disposed at least one end of the insulating member 40 along the z-axis direction, and the insulating member 40 and the battery cell 20 are adapted to have the same size in the z-axis direction through expansion and contraction adjustment of the expansion part 41, that is, the insulating member 40 and the battery cell 20 are adapted to have the same size in the width direction. Similarly, the second direction may be both the y-axis direction and the z-axis direction in fig. 4, so that the insulating member 40 and the battery cell 20 are adapted to have equal sizes in the height direction and the width direction.

The expansion part 41 may be, for example, a folding structure or an expansion sliding structure, and the size of the insulating member 40 in the second direction is adjusted by folding or unfolding the folding structure or by extending or shortening the expansion structure, so as to be suitable for the size of the battery cell 20 and ensure the insulating performance. The expansion part 41 may be provided only at one end edge of the insulating member 40 as shown in fig. 4, or may be provided at opposite end edges of the insulating member 40, so that the size of the insulating member 40 can be adjusted at both ends.

Through set up insulating part 40 between battery monomer 20 and mounting panel 30 for battery monomer 20 and mounting panel 30 mutual insulation are kept apart, through set up on insulating part 40 along second direction telescopic part 41, make insulating part 40 can carry out size adjustment in the second direction, and then suit with battery monomer 20 at the size of second direction, in order to guarantee good insulating properties between battery monomer 20 and the mounting panel 30, promote battery stability and security.

With continued reference to FIG. 4, according to some embodiments of the present application, the telescoping portion 41 optionally includes an undulating fold 411.

As shown in fig. 4, the folding structure 411 may be formed by extending an edge of one end of the insulating member 40 back and forth, and the size adjustment of the insulating member 40 in the second direction may be achieved by compressing or elongating the folding structure 411 in the second direction.

In the production process, the body part 42 of the insulating member 40 and the folding structure 411 can be integrally formed by developing a corresponding mold, so that the production efficiency is ensured, the assembly time of the subsequent battery 100 is reduced, and the insulating property between the single battery 20 and the mounting plate 30 can be better ensured.

The folding structure 411 not only can realize size adaptation adjustment between the battery cell 20 and the insulating member 40, but also can realize space isolation through a gap formed between each reciprocating folding section and the surface of the battery cell 20, thereby further ensuring the insulating property.

With continuing reference to fig. 4 and with further reference to fig. 5, fig. 5 shows a side view of a battery 100 according to an embodiment of the present disclosure. According to some embodiments of the present application, optionally, the insulating member 40 further includes a body portion 42, an inner surface of the body portion 42 abuts against the battery cell 20, and the folding structure 411 is disposed at one end of the body portion 42 along the second direction, and along the first direction, the folding structure 411 protrudes toward a side away from the battery cell 20.

When the folding structure 411 is compressed and folded, the size in the first direction (i.e. the x-axis direction in fig. 5) is correspondingly increased, in order to avoid the structural interference between the folding structure 411 and the battery cell 20 when the size of the folding structure 411 in the first direction is increased, the smooth folding of the folding structure 411 is affected, and the stability of the overall structure of the battery 100 is affected, the folding structure 411 is arranged to protrude towards the side away from the battery cell 20 along the first direction, so that when the folding structure 411 is compressed and folded, the folding structure 411 and the battery cell 20 cannot generate structural interference, the sufficient contact between the insulating member 40 and the battery cell 20 is ensured, and the insulating performance of the battery 100 is ensured.

Further, with continued reference to fig. 5, according to some embodiments of the present application, optionally, the surface of the mounting plate 30 facing the insulating member 40 is provided with a receiving groove 31, and the receiving groove 31 is used for receiving the folding structure 411.

Through set up holding tank 31 on mounting panel 30, provide the accommodation space for beta structure 411 after the compression folding, avoid producing the structure between beta structure 411 and the mounting panel 30 and interfere.

Referring to fig. 6, a cross-sectional structure of the insulating member 40 of the battery 100 according to another embodiment of the present application is shown. According to some embodiments of the present application, optionally, the insulating member 40 further includes a body portion 42, the body portion 42 has an inner cavity 421, at least a portion of the telescopic portion 41 is received in the inner cavity 421, and the telescopic portion 41 is configured to be slidably disposed in the inner cavity 421 along the second direction.

As shown in fig. 6, one end of the main body 42 is provided with an inner cavity 421 extending along the second direction (i.e. the y-axis direction in the figure), and a part of the structure of the telescopic part 41 is slidably accommodated in the inner cavity 421, so that the dimension of the insulating member 40 in the second direction is adjusted by sliding the telescopic part 41 relative to the main body 42 along the second direction.

Referring again to fig. 4 in further conjunction with fig. 7, fig. 7 shows the structure of the insulating member 40 in the battery 100 according to an embodiment of the present disclosure. According to some embodiments of the present application, optionally, the second direction is a height direction of the battery cell 20, the battery cell 20 includes a first end surface 24 and a second end surface 25 perpendicular to the second direction, and the first end surface 24 is closer to the expansion part 41 than the second end surface 25. An end of the telescopic portion 41 facing away from the body portion 42 is provided with a first folding edge 43, and the first folding edge 43 extends in a first direction to cover at least part of the first end surface 24.

Specifically, as shown in fig. 4 and 7, the first end surface 24 and the second end surface 25 refer to a bottom surface and a top surface of the battery cell 20, respectively, the expansion part 41 is located near the first end surface 24, and the first flange 43 extends in the x-axis direction in the drawing to cover at least a portion of the first end surface 24.

During the assembly process of the battery 100, a blue film is generally wrapped on the surface of the battery cell 20 to protect the battery cell 20. The mounting plate 30 also typically includes end plates disposed on the top and bottom of the battery cells 20.

Through setting up first hem 43 in the one end that pars contractilis 41 deviates from this body part 42 for pars contractilis 41 adjusts to corresponding size after, the internal surface of first hem 43 can with first terminal surface 24 mutual butt, realize to pars contractilis 41 spacing fixed, first hem 43 still wraps up the protection to the edge of battery monomer 20 bottom, avoids the blue membrane damage of edge department. And after the battery 100 is assembled, the first folding edge 43 provides support for the bottom of the battery unit 20, so that a gap is formed between the first end surface 24 of the battery unit 20 and an end plate or other structures at the bottom, the creepage distance is increased, and the safety performance of the battery 100 is improved.

Referring to fig. 4 and 7, according to some embodiments of the present disclosure, optionally, an end of the main body 42 facing away from the telescopic portion 41 is provided with a second folded edge 44, and the second folded edge 44 extends along the first direction to cover at least a portion of the second end surface 25.

Similarly, the second folded edge 44 is arranged at one end of the main body part 42, which is far away from the telescopic part 41, so that the top edge of the battery cell 20 is protected, the creepage distance at the top of the battery cell 20 is increased, and the safety performance is improved.

Referring to fig. 4, according to some embodiments of the present disclosure, optionally, the single battery cell 20 includes a third end surface 26 and a fourth end surface 27 perpendicular to a third direction, the third direction is perpendicular to the first direction and the second direction, two ends of the body portion 42 along the third direction are respectively provided with a third folding edge 45, and the third folding edge 45 extends along the first direction to cover at least a portion of the third end surface 26 and at least a portion of the fourth end surface 27.

Through set up third hem 45 on this somatic part 42, realize the protection to the third terminal surface 26 of battery monomer 20 and fourth terminal surface 27 department edge, increase the creepage distance of battery monomer 20 both sides.

Referring again to fig. 5, according to some embodiments of the present application, optionally, the ratio of the size of the body portion 42 to the size of the battery cell 20 in the second direction is greater than or equal to 0.8.

Specifically, as shown in fig. 5, the body portion 42 has a dimension h in the y-axis direction (i.e., the second direction)₁The size of the battery cell 20 is h₂，h₁：h₂≥0.8。

In the overall battery 100, since the battery cell 20 may swell after operation, the swelling is particularly significant on the larger side surface of the battery cell 20, and the body portion 42 of the insulating member 40 is abutted on the large surface of the battery cell 20, it is necessary to ensure that the body portion 42 can cover the central area of the large surface and provide a certain restraining force for the surface to ensure the stability of the overall structure of the battery 100 in consideration of the stress concentration problem in the central area after the large surface of the battery cell 20 swells.

Based on the above problem, by setting the ratio of the size of the body portion 42 to the size of the battery cell 20 to be greater than or equal to 0.8 in the second direction, it can be effectively ensured that the body portion 42 covers the central area on the larger side surface of the battery cell 20, a good restraining force is provided for the battery cell 20, and the structural stability of the battery 100 is ensured.

Further, referring to fig. 5 again, according to some embodiments of the present application, optionally, a partial folding segment of the folding structure 411 in the initial state coincides with a projection of the battery cell 20 in the first direction, and a height of the coinciding folding segment in the second direction is greater than or equal to a total height of the folding structure 411.

Specifically, as shown in fig. 5, in the initial state of the folding structure 411, a part of the folding section coincides with the projection of the battery cell 20 in the x-axis direction in the figure, and the height of the coinciding folding section in the y-axis direction is h₃The total height of the folding structure 411 in the y-axis direction is h₄，h₃：h₄≥1/3。

Through set up the height of folded structure 411 and battery monomer 20 projection coincidence folding section under initial condition to be more than or equal to folded structure 411's overall height, can effectively guarantee that folded structure 411 can be higher than battery monomer 20's height adaptation after compressing, avoid still being higher than battery monomer 20 after folded structure 411 fully compresses, cause the assembly failure or influence the effect of insulating isolation.

According to another aspect of the embodiments of the present application, an electric device is provided, which includes the battery 100 in any one of the embodiments.

Specifically, the electricity consuming device may be, but is not limited to, a mobile phone, a tablet, a notebook, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like. The electric toy may include a stationary or mobile electric toy, such as a game machine, an electric car toy, an electric ship toy, an electric airplane toy, and the like, and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, and the like.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not intended to be limited to the particular embodiments disclosed herein, but rather to include all embodiments falling within the scope of the appended claims.

Claims (10)

1. A battery, comprising:

a battery cell;

the mounting plate is arranged on one side of the battery monomer along the first direction;

the insulating piece is arranged between the battery monomer and the mounting plate so as to insulate and isolate the battery monomer from the mounting plate;

the insulating piece comprises a telescopic part which is configured to be telescopic along a second direction so as to adapt the insulating piece to the size of the battery cell along the second direction, wherein the second direction is perpendicular to the first direction.

2. The battery of claim 1, wherein the bellows comprises a wave-shaped folded structure.

3. The battery of claim 2, wherein the insulating member further comprises a body portion, an inner surface of the body portion abuts against the battery cell, and the folding structure is disposed at one end of the body portion along the second direction, and projects toward a side facing away from the battery cell along the first direction.

4. The battery of claim 3, wherein the surface of the mounting plate facing the insulating member is provided with a receiving groove for receiving the folded structure.

5. The battery of claim 1, wherein the insulator further comprises a body portion having an internal cavity in which at least a portion of the telescoping portion is received, the telescoping portion configured to be slidably disposed in the internal cavity along the second direction.

6. The battery according to any one of claims 3 to 5, wherein the second direction is a height direction of the battery cell, the battery cell includes a first end face and a second end face perpendicular to the second direction, the first end face is closer to the expansion part than the second end face;

one end of the telescopic part, which is far away from the body part, is provided with a first folding edge, and the first folding edge extends along the first direction to cover at least part of the first end surface.

7. The cell defined in claim 6, wherein an end of the body portion facing away from the telescoping portion is provided with a second flap that extends in the first direction to cover at least part of the second end face.

8. The battery of claim 6, wherein the battery cell comprises a third end surface and a fourth end surface perpendicular to a third direction perpendicular to the first direction and the second direction, and wherein the body portion is provided with a third folded edge at each of two ends along the third direction, and the third folded edge extends along the first direction to cover at least a portion of the third end surface and at least a portion of the fourth end surface.

9. The battery according to any one of claims 3-5, wherein a ratio of a dimension of the body portion to a dimension of the battery cell in the second direction is greater than or equal to 0.8.

10. An electric device comprising the battery according to any one of claims 1 to 9.

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