CN219350480U - Battery and electricity utilization device - Google Patents

Abstract

The embodiment of the application provides a battery and power consumption device, the battery includes box, battery monomer and bolster, and the box includes the end wall and connects in the first lateral wall of end wall, and the battery monomer holds in the box, and the at least part of bolster sets up between first lateral wall and battery monomer. The application can prolong the service life of the battery.

Description

Battery and electricity utilization device

Technical Field

The present application relates to the field of batteries, and more particularly, to a battery and an electrical device.

Background

Battery cells are widely used in electronic devices such as cellular phones, notebook computers, battery cars, electric vehicles, electric airplanes, electric ships, electric toy vehicles, electric toy ships, electric toy airplanes, electric tools, and the like.

In the development of battery technology, how to extend the service life of a battery is one research direction in battery technology.

Disclosure of Invention

The application provides a battery and an electric device, which can prolong the service life of the battery.

In a first aspect, embodiments of the present application provide a battery, including a box, a battery cell and a buffer, the box includes an end wall and a first side wall connected to the end wall, the battery cell is accommodated in the box, and at least a portion of the buffer is disposed between the first side wall and the battery cell.

When the battery receives the extrusion along first lateral wall and battery monomer range direction, the bolster can play the cushioning effect through the deformation of self, protects the battery monomer, reduces the injury that the battery monomer received to improve the anti extrusion ability of the side of battery, prolong the life of battery, improve the reliability of battery.

In some embodiments, there is a gap between the buffer and the first sidewall and/or there is a gap between the buffer and the battery cell.

When the battery monomer is assembled into the box body, the buffer part is not required to be excessively extruded to be assembled into the box body, so that the assembly efficiency is improved.

In some embodiments, the case includes two first side walls disposed opposite to each other along the first direction, and a buffer member is disposed between at least one of the first side walls and the battery cell, and the buffer member is connected to at least one of the battery cell and the first side wall.

Connect the bolster in battery monomer and/or first lateral wall, battery monomer and/or first lateral wall can play the fixed action to the bolster, can alleviate the bolster and take place the condition of drunkenness in the use, improve the stability of bolster, and then improve the bolster to the free guard action of battery.

In some embodiments, a plurality of buffer members are disposed between at least one first sidewall and the battery cell, the plurality of buffer members being sequentially disposed along a second direction, the first direction intersecting the second direction.

A plurality of buffer members are arranged between the first side wall and the battery cell, so that the size of each buffer member along the second direction can be adaptively reduced, and the buffer members can be conveniently processed and manufactured.

In some embodiments, the battery further comprises two second side walls arranged opposite to each other along the second direction, the two first side walls and the two second side walls are alternately arranged and connected, a buffer member is arranged between at least one second side wall and the battery cell, the first direction and the second direction intersect, and the buffer member is connected to at least one of the battery cell and the second side wall.

And a buffer piece is arranged between the second side wall and the battery cells, so that the buffer piece can form buffer and protection effects on at least one side of the integral structure formed by the plurality of battery cells in the second direction, the extrusion resistance of the side face of the battery is further improved, and the service life of the battery is prolonged.

In some embodiments, the cushioning member includes a main body portion, a first support portion, and a second support portion connected to the main body portion, the first support portion and the second support portion being spaced apart in a direction perpendicular to the end wall.

The first supporting part and the second supporting part are arranged at intervals in the direction perpendicular to the end wall, so that the first supporting part and the second supporting part between the first side wall and the battery cell can play a role in double supporting in the arrangement direction of the first side wall and the battery cell, and a good protection effect is formed on the battery cell when extrusion collision occurs.

In some embodiments, at least one of the first support and the second support is connected to the battery cell.

The first supporting part and/or the second supporting part are/is connected to the battery cell, so that the connection reliability of the buffer piece and the battery cell can be improved, the possibility that the buffer effect is reduced due to the movement of the buffer piece in the use process is reduced, and the use reliability of the buffer piece is improved.

In some embodiments, the first support portion and the second support portion are connected to a side of the main body portion facing the battery cell, the battery further includes a heat exchange tube, the heat exchange tube is located between the first side wall and the battery cell, and the first support portion and the second support portion are disposed on two sides of the heat exchange tube.

By the arrangement, the first supporting part, the main body part and the second supporting part form a semi-surrounding structure of the heat exchange tube, so that the heat exchange tube is protected, the possibility of cracking and leakage of the heat exchange tube in the extrusion process is reduced, the risk of thermal runaway of the battery is reduced, and the reliability of the battery is further improved.

In some embodiments, the first support includes a first support arm and a second support arm; one end of the first supporting arm is connected to the main body part; the second support arm is connected to the other end of the first support arm, which is away from the main body part, and extends from the first support arm towards or away from the end wall, and the second support arm is connected to the battery cell.

The first supporting part is arranged to comprise the first supporting arm and the second supporting arm, and the second supporting arm is connected to the battery cell, so that the connection area of the first supporting part and the battery cell can be increased, the connection reliability of the buffer piece and the battery cell is further improved, the occurrence of the movement of the buffer piece in the use process is reduced, and the use reliability of the buffer piece is improved.

In some embodiments, the first support portion is located on a side of the second support portion facing away from the end wall, and the first support arm extends in a direction facing away from the end wall.

The first supporting part is arranged on one side, away from the end wall, of the second supporting part, so that the first supporting part is conveniently connected to the battery cell from the upper side, and the operation efficiency is improved. For example, when the first support portion is bonded to the battery cell directly from the upper side, the second support portion does not serve as a barrier. And when the battery comprises the heat exchange tube, the first support arm extends to the direction deviating from the end wall, so that the assembly of the buffer piece can be facilitated, namely, the second support arm can hardly interfere with the heat exchange tube to influence the assembly.

In some embodiments, the first support portion and the second support portion are each plural in number, and the plural first support portions and the plural second support portions are each disposed at intervals along a second direction intersecting a direction perpendicular to the end wall.

The number of the first supporting parts and the number of the second supporting parts are respectively set to be a plurality of, so that compared with the mode that the first supporting parts and the second supporting parts are continuously arranged along the length direction of the main body part, the weight of the buffer piece can be reduced, and the weight of the battery can be reduced.

In some embodiments, the cushioning member comprises a resilient member.

The deformation of the elastic piece is large, and the elastic piece can generate good buffering effect and protection effect on the battery unit.

In a second aspect, the present application provides an electrical device comprising a battery according to any one of the embodiments described above, the battery being configured to provide electrical energy.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and that other drawings may be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of a vehicle according to some embodiments of the present application;

fig. 2 is a schematic structural diagram of a case and a battery cell in a battery according to some embodiments of the present disclosure;

fig. 3 is a schematic view of a partial structure of a battery according to some embodiments of the present application;

FIG. 4 is a schematic view of a buffer for a battery according to some embodiments of the present application;

FIG. 5 is a schematic view of another embodiment of a buffer for a battery according to some embodiments of the present disclosure;

fig. 6 is an enlarged view at a in fig. 5.

Reference numerals of the specific embodiments are as follows:

1. a vehicle; 2. a battery; 3. a controller; 4. a motor;

5. a case; 51. an end wall; 52. a first sidewall; 53. a second sidewall;

6. a battery cell;

7. a buffer member; 71. a main body portion; 72. a first support portion; 721. a first support arm; 722. a second support arm; 73. a second supporting part;

8. a heat exchange tube;

x, a first direction; y, second direction; z, third direction.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

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 application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases 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.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "attached" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

The term "and/or" in this application is merely an association relation describing an associated object, and indicates that three relations may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In this application, the character "/" generally indicates that the associated object is an or relationship.

In the embodiments of the present application, the same reference numerals denote the same components, and in the interest of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, etc. dimensions of the various components in the embodiments of the present application, as well as the overall thickness, length, width, etc. dimensions of the integrated device, are illustrative only and should not be construed as limiting the present application in any way.

The term "plurality" as used herein refers to more than two (including two).

In the present application, the battery cells may include lithium ion secondary battery cells, lithium ion primary battery cells, lithium sulfur battery cells, sodium lithium ion battery cells, sodium ion battery cells, or magnesium ion battery cells, and the embodiment of the present application is not limited thereto. The battery cells may be cylindrical, flat, rectangular, or otherwise shaped, as well as the embodiments herein are not limited in this regard.

Reference to a battery in embodiments of the present application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in the present application may include a battery module or a battery pack, or the like. The battery generally includes a case for enclosing one or more battery cells. The case body can prevent liquid or other foreign matters from affecting the charge or discharge of the battery cells.

The battery cell comprises an electrode assembly and electrolyte, wherein the electrode assembly comprises a positive electrode plate, a negative electrode plate and a separator. The battery cell mainly relies on metal ions to move between the positive pole piece and the negative pole piece to work. The positive electrode plate comprises a positive electrode current collector and a positive electrode active material layer, and the positive electrode active material layer is coated on the surface of the positive electrode current collector; the positive electrode current collector comprises a positive electrode coating area and a positive electrode lug connected to the positive electrode coating area, wherein the positive electrode coating area is coated with a positive electrode active material layer, and the positive electrode lug is not coated with the positive electrode active material layer. Taking a lithium ion battery monomer as an example, the material of the positive electrode current collector can be aluminum, the positive electrode active material layer comprises a positive electrode active material, and the positive electrode active material can be lithium cobaltate, lithium iron phosphate, ternary lithium or lithium manganate and the like. The negative electrode plate comprises a negative electrode current collector and a negative electrode active material layer, and the negative electrode active material layer is coated on the surface of the negative electrode current collector; the negative electrode current collector comprises a negative electrode coating area and a negative electrode tab connected to the negative electrode coating area, wherein the negative electrode coating area is coated with a negative electrode active material layer, and the negative electrode tab is not coated with the negative electrode active material layer. The material of the anode current collector may be copper, the anode active material layer includes an anode active material, and the anode active material may be carbon or silicon, or the like. The material of the separator may be PP (polypropylene) or PE (polyethylene), etc.

The battery cell further includes a case inside which a receiving chamber for receiving the electrode assembly is formed. The case may protect the electrode assembly from the outside to prevent foreign substances from affecting the charge or discharge of the electrode assembly.

To enhance the crush resistance requirements of the battery, the rigidity of the case is typically increased by thickening the side walls of the case, or the like.

The inventors have found that this approach, while capable of increasing the crush resistance of the battery side to some extent, is more limited and the crush resistance of the battery side is still weaker.

In view of this, this application provides a technical scheme, and it is through increasing the bolster between the lateral wall of battery monomer and box, when the side of battery receives the extrusion, the bolster can play the cushioning effect through the deformation of self, and the protection battery monomer reduces the injury that the battery monomer received, improves the anti extrusion ability of battery side to the life of extension battery.

The battery cell described in the embodiments of the present application is suitable for a battery and an electric device using the battery cell.

The electric device may be a vehicle, a mobile phone, a portable device, a notebook computer, a ship, a spacecraft, an electric toy, an electric tool, or the like. The vehicle can be a fuel oil vehicle, a fuel gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extended vehicle; spacecraft including airplanes, rockets, space planes, spacecraft, and the like; the electric toy includes fixed or mobile electric toys, such as a game machine, an electric car toy, an electric ship toy, and an electric airplane toy; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railroad power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete shakers, and electric planers, among others. The embodiment of the application does not limit the electric device in particular.

For convenience of explanation, the following examples will be described taking an electric device as an example of a vehicle.

Figure 1 is a schematic structural diagram of an electric device according to an embodiment of the present application,

as shown in fig. 1, the interior of the vehicle 1 is provided with a battery 2, and the battery 2 may be provided at the bottom or at the head or at the tail of the vehicle 1. The battery 2 may be used for power supply of the vehicle 1, for example, the battery 2 may serve as an operating power source of the vehicle 1.

The vehicle 1 may further comprise a controller 3 and a motor 4, the controller 3 being arranged to control the battery 2 to power the motor 4, for example for operating power requirements during start-up, navigation and driving of the vehicle 1.

In some embodiments of the present application, the battery 2 may not only serve as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, providing driving power for the vehicle 1 instead of or in part instead of fuel oil or natural gas.

Fig. 2 is a schematic structural diagram of a case and a battery cell in a battery according to some embodiments of the present application, and fig. 3 is a schematic partial structural diagram of a battery according to some embodiments of the present application.

As shown in fig. 2 and 3, the battery 2 of the embodiment of the present application includes a case 5, a battery cell 6, and a buffer member 7, the case 5 includes an end wall 51 and a first side wall 52 connected to the end wall 51, and the battery cell 6 is accommodated in the case 5; at least part of the buffer 7 is disposed between the first sidewall 52 and the battery cell 6.

The buffer member 7 of the embodiment of the present application may be connected to the battery cell 6 and/or the first side wall 52, or may not be connected to both the battery cell 6 and the first side wall 52.

Alternatively, the battery cell 6 is connected to the end wall 51. Further alternatively, the bottom end of the battery cell 6 opposite to the electrode terminal is fixed to the end wall 51.

The end wall 51 may be located on the upper side of the battery cell 6 or on the lower side of the battery cell 6 when the battery 2 is mounted to the power consumption device.

The embodiment of the present application does not limit the specific structure of the cushion 7. The buffer 7 is an elongated structure, and extends in the longitudinal direction of the first side wall 52, for example. The first sidewall 52 has a length direction and a height direction, the height direction is parallel to the vertical direction, and the length direction may be perpendicular to the height direction. The buffer 7 may also be of block-like construction, for example.

The specific shape of the first side wall 52 is not limited in the embodiments of the present application. The first side wall 52 may be a wall of a side plate of the case 5, or may be a wall of a side beam of the case 5.

The first side wall 52 and the end wall 51 of the present embodiment may be directly connected or indirectly connected. The first side wall 52 forms an angle with the end wall 51.

The buffer piece 7 is arranged between the first side wall 52 and the battery cell 6, so that when the battery 2 is extruded along the arrangement direction of the first side wall 52 and the battery cell 6, the buffer piece 7 can play a role in buffering through deformation of the buffer piece, the battery cell 6 is protected, the damage to the battery cell 6 is reduced, the extrusion resistance of the side face of the battery 2 is improved, the service life of the battery 2 is prolonged, and the reliability of the battery 2 is improved.

In some embodiments, there is a gap between the buffer 7 and the first sidewall 52 and/or a gap between the buffer 7 and the battery cell 6.

A gap is provided between the buffer member 7 and the first side wall 52 and/or the battery cell 6, so that the battery cell 6 can be assembled into the case 5 without excessively pressing the buffer member 7 when the battery cell 6 is assembled into the case 5, thereby improving the assembly efficiency.

In some embodiments, the case 5 includes two first sidewalls 52 disposed opposite to each other along the first direction X, and a buffer 7 is disposed between at least one of the first sidewalls 52 and the battery cell 6, and the buffer 7 is connected to at least one of the battery cell 6 and the first sidewalls 52.

In the embodiment of the present application, there is no limitation on whether the structures of the two first side walls 52 are the same, and the structures of the two first side walls 52 may be the same or different.

The buffer 7 is connected with the battery cell 6, and the buffer and the battery cell 6 can be connected by bonding or abutting.

The buffer 7 is connected to the first side wall 52, and the buffer 7 and the first side wall may be bonded, abutted, clamped, or the like.

Connect buffer 7 in battery monomer 6 and/or first lateral wall 52, battery monomer 6 and/or first lateral wall 52 can play the fixed action to buffer 7, can alleviate buffer 7 and take place the condition of drunkenness in the use, improve buffer 7's stability, and then improve buffer 7 to battery monomer 6's protection effect.

In some embodiments, a buffer 7 is provided between the two first side walls 52 and the battery cells 6, respectively.

In this embodiment, whether the structures of the buffer members 7 on two sides of the battery cell 6 are the same or not is not limited, and the structures of the buffer members 7 on two sides of the battery cell 6 may be the same or different.

The connection relation of the buffer members 7 at both sides may be the same or different. Illustratively, the buffer 7 on one side is connected to both the battery cell 6 and the first sidewall 52, and the buffer 7 on the other side is connected to only the battery cell 6.

The buffer pieces 7 are respectively arranged on two sides of the battery cells 6 along the first direction X, so that the buffer pieces 7 form buffer and protection effects on two opposite sides of the integral structure formed by the battery cells 6 along the first direction X, the extrusion resistance of the side face of the battery 2 is further improved, and the service life of the battery 2 is prolonged.

Fig. 4 is a schematic structural view of a buffer member of a battery according to some embodiments of the present application.

As shown in fig. 4, in some embodiments, a plurality of buffer members 7 are disposed between at least one first sidewall 52 and the battery cell 6, and the plurality of buffer members 7 are sequentially disposed along the second direction Y, and the first direction and the second direction intersect.

Alternatively, the first direction X and the second direction Y are perpendicular.

In this embodiment, whether two adjacent buffer members 7 are connected is not limited, and two adjacent buffer members 7 may be connected or may be arranged at intervals. When the adjacent two cushioning members 7 are connected, they may be connected by contact or adhesion.

In this embodiment, whether the structures of the plurality of cushioning members 7 are the same is not limited, and the structures of the plurality of cushioning members 7 may be the same, or only some of the structures may be the same, or may be different.

A plurality of buffer members 7 are disposed between the first side wall 52 and the battery cells 6, so that the size of each buffer member 7 along the second direction Y can be adaptively reduced, and the buffer members 7 can be conveniently processed and manufactured.

In some embodiments, the battery 2 further includes two second side walls 53 disposed opposite to each other along the second direction Y, the two first side walls 52 and the two second side walls 53 are alternately disposed and connected, and the buffer member 7 is disposed between at least one second side wall 53 and the battery cell 6, and the first direction X and the second direction Y intersect.

The second side wall 53 may be a wall of a side plate of the case 5, or may be a wall of a side beam of the case 5.

In the embodiment of the present application, whether the structures of the two second sidewalls 53 are the same or not is not limited, and the structures of the two second sidewalls 53 may be the same or different.

Alternatively, the first direction X and the second direction Y are perpendicular.

The two first side walls 52 and the two second side walls 53 are alternately arranged and connected, which means that the first side walls 52, the second side walls 53, the first side walls 52 and the second side walls 53 are sequentially arranged and connected along the enclosing direction of the plurality of side walls.

The buffer member 7 is disposed between the second side wall 53 and the battery unit 6, so that the buffer member 7 can form a buffer and protection effect on at least one side of the overall structure formed by the battery units 6 in the second direction Y, further improving the anti-extrusion capability of the side surface of the battery 2, and prolonging the service life of the battery 2.

Further alternatively, the buffer 7 is connected to at least one of the battery cell 6 and the second sidewall 53.

If the buffer 7 is connected with the battery cell 6, an adhesive or abutting connection mode can be adopted; if the buffer 7 is connected to the second side wall 53, an adhesive, contact or snap connection may be used.

The buffer member 7 is connected to at least one of the battery cell 6 and the second side wall 53, so that the play of the buffer member 7 in the use process can be reduced, the stability of the buffer member 7 is improved, and the protection effect of the buffer member 7 on the battery cell 6 is further improved.

Fig. 5 is another structural schematic diagram of a buffer member of a battery according to some embodiments of the present application.

As shown in fig. 5, in some embodiments, the cushion 7 includes a main body portion 71, a first support portion 72, and a second support portion 73, the first support portion 72 and the second support portion 73 being connected to the main body portion 71, the first support portion 72 and the second support portion 73 being disposed at intervals in a direction perpendicular to the end wall 51.

The body portion 71 is illustratively a strip-like structure. The cross section of the main body portion 71 in its own longitudinal direction may be rectangular, trapezoidal or other irregular shape.

The main body 71, the first support 72 and the second support 73 may be integrally formed, welded or bonded.

In the embodiment of the present application, there is no limitation on whether the structures of the first support portion 72 and the second support portion 73 are the same, and the structures of the first support portion 72 and the second support portion 73 may be the same or different.

Illustratively, the first support 72 or the second support 73 may be rod-shaped, plate-shaped, or other shapes.

The first support portion 72 and the second support portion 73 in this embodiment may be connected to a side of the main body portion 71 facing the battery cell 6, or may be connected to a side of the main body portion 71 facing away from the battery cell 6, i.e. facing the first side wall 52.

The third direction Z in the present embodiment is parallel to the direction perpendicular to the end wall 51.

The first support portion 72 and the second support portion 73 are disposed at intervals in a direction perpendicular to the end wall 51, so that the first support portion 72 and the second support portion 73 between the first side wall 52 and the battery cell 6 can perform a double support function in the arrangement direction of the first side wall 52 and the battery cell 6, thereby forming a good protection function for the battery cell 6 in the event of a crush collision.

In some embodiments, at least one of the first support 72 and the second support 73 is connected to the battery cell 6.

For example, the first support portion 72 and/or the second support portion 73 may be connected to the battery cell 6 by abutting or bonding. When the abutting connection method is adopted, the connection between the buffer member 7 and the battery cell 6 may be maintained by an abutting member, and the abutting member may be a spring or other elastic structure.

The first support portion 72 and/or the second support portion 73 are/is connected to the battery cell 6, so that the reliability of connection between the buffer member 7 and the battery cell 6 can be improved, the possibility that the buffer effect is reduced due to movement of the buffer member 7 in the use process is reduced, and the use reliability of the buffer member 7 is improved.

In some embodiments, the first support portion 72 and the second support portion 73 are connected to a side of the body portion 71 facing the battery cell 6. The battery 2 further includes a heat exchange tube 8, the heat exchange tube 8 is located between the first side wall 52 and the battery cell 6, and the first support portion 72 and the second support portion 73 are disposed opposite to each other on two sides of the heat exchange tube 8.

The present embodiment does not limit whether the main body 71 and the first side wall 52 are connected. The main body 71 and the first side wall 52 may be connected or disconnected from each other at a distance.

By the arrangement, the first supporting part 72, the main body part 71 and the second supporting part 73 can form a semi-surrounding structure of the heat exchange tube 8, so that the heat exchange tube 8 is protected, the possibility of cracking and leakage of the heat exchange tube 8 in the extrusion process is reduced, the risk of thermal runaway of the battery 2 is reduced, and the reliability of the battery 2 is further improved.

Fig. 6 is an enlarged view at a in fig. 5.

As shown in fig. 6, in some embodiments, the first support 72 includes a first support arm 721 and a second support arm 722; one end of the first support arm 721 is connected to the main body portion 71, the second support arm 722 is connected to the other end of the first support arm 721 facing away from the main body portion 71, and the second support arm 722 is connected to the battery cell 6 while extending from the first support arm 721 in a direction toward or away from the end wall 51.

In this embodiment, the included angle formed by the first support arm 721 and the second support arm 722 is not limited, and the first support arm 721 and the second support arm 722 may be perpendicular to each other or may be disposed obliquely with respect to each other.

The second support arm 722 extends from the first support arm 721 toward or away from the end wall 51, and does not represent that the second support arm 722 is perpendicular to the end wall 51, and the second support arm 722 may be disposed obliquely with respect to the end wall 51 while extending toward or away from the end wall 51.

The second support arm 722 and the battery cell 6 may be connected by adhesion, contact, or the like.

The first supporting portion 72 is configured to include the first supporting arm 721 and the second supporting arm 722, and the second supporting arm 722 is connected to the battery unit 6, so that the connection area between the first supporting portion 72 and the battery unit 6 can be increased, the connection reliability of the buffer 7 and the battery unit 6 can be further improved, the occurrence of play of the buffer 7 in the use process can be reduced, and the use reliability of the buffer 7 can be improved.

In some embodiments, the first support 72 is located on a side of the second support 73 facing away from the end wall 51. Further alternatively, the first support arm 721 extends in a direction away from the end wall 51.

The first support portion 72 is provided on a side of the second support portion 73 facing away from the end wall 51, so that the first support portion 72 is easily connected to the battery cell 6 from the upper side, and the efficiency of the operation is improved. For example, when the first support portion 72 is bonded directly to the battery cell 6, the second support portion 73 does not act as a barrier. Also, when the battery 2 includes the heat exchange tube 8, the first support arm 721 extends in a direction away from the end wall 51, so that the assembly of the buffer 7 can be facilitated, i.e., the second support arm 722 hardly interferes with the heat exchange tube 8 to affect the assembly.

In some embodiments, the number of the first supporting portions 72 and the second supporting portions 73 is plural, and the plural first supporting portions 72 and the plural second supporting portions 73 are respectively arranged at intervals along the second direction Y intersecting the direction perpendicular to the end wall 51, that is, intersecting the third direction Z.

Optionally, the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

In the embodiment of the present application, whether the shapes of the plurality of first supporting portions 72 are the same is not limited, and the shapes of the plurality of first supporting portions 72 may be the same, or may be different. As such, the arrangement of the plurality of second supporting portions 73 is not described herein.

The plurality of first support portions 72 and the plurality of second support portions 73 in the embodiment of the present application are connected to the same main body portion 71 in common.

The number of the first support portions 72 and the second support portions 73 is plural, respectively, so that the weight of the buffer 7 can be reduced, and thus the weight of the battery 2 can be reduced, compared to the manner in which the first support portions 72 and the second support portions 73 are continuously provided along the length direction of the main body portion 71.

In some embodiments, the cushioning member 7 comprises an elastic member.

In this embodiment of the present application, the elastic member is to have a certain ability to generate deformation, and can recover at least part of the deformation when the external force is removed. Illustratively, the material of the resilient member comprises a nonmetallic foam material or rubber.

The deformation of the elastic piece is large, and the elastic piece can generate good buffering effect and protection effect on the battery unit.

The embodiment of the application also provides an electricity utilization device, which comprises the battery 2, wherein the battery 2 is used for providing electric energy.

Referring to fig. 2-5, the embodiment of the present application provides a battery 2, including a case 5, a battery unit 6 and a buffer member 7, the case 5 includes an end wall 51, two first side walls 52 disposed opposite along a first direction X, and two second side walls 53 disposed opposite along a second direction Y, the first side walls 52 and the second side walls 53 are connected to the end wall 51, the two first side walls 52 and the two second side walls 53 are alternately disposed and connected, the first direction X and the second direction Y intersect, and the battery unit 6 is mounted in the case 5.

At least one first side wall 52 is provided with a buffer member 7 between the battery cell 6, and a gap is formed between the buffer member 7 and the first side wall 52. The buffer 7 includes a main body 71, a first support 72 and a second support 73, the first support 72 and the second support 73 are connected to a side of the main body 71 facing the battery cell 6, the first support 72 and the second support 73 are disposed at intervals in a third direction Z, at least one of them is connected to the battery cell 6, and the first direction X, the second direction Y and the third direction Z intersect each other. The cushioning member 7 includes an elastic member.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; 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 may be modified or some technical features may be replaced with other technical solutions, which may not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims (12)

1. A battery, comprising:

a housing including an end wall and a first side wall connected to the end wall;

a battery cell accommodated in the case; and

the buffer piece is at least partially arranged between the first side wall and the battery cell;

the buffer piece comprises a main body part, a first supporting part and a second supporting part, wherein the first supporting part and the second supporting part are connected to the main body part, and the first supporting part and the second supporting part are arranged at intervals in the direction perpendicular to the end wall.

2. The battery of claim 1, wherein the buffer member has a gap with the first sidewall, and/or,

and a gap is reserved between the buffer piece and the battery cell.

3. The battery of claim 1, wherein the case includes two first side walls disposed opposite to each other in a first direction, the buffer being disposed between at least one of the first side walls and the battery cell, the buffer being connected to at least one of the battery cell and the first side wall.

4. A battery according to claim 3, wherein a plurality of said cushioning members are provided between at least one of said first side walls and said battery cell, said plurality of cushioning members being arranged in sequence along a second direction, said first direction intersecting said second direction.

5. The battery of claim 3, further comprising two second side walls disposed opposite each other in a second direction, the two first side walls and the two second side walls being alternately disposed and connected, the buffer being disposed between at least one of the second side walls and the battery cell, the first direction intersecting the second direction,

the buffer is connected to at least one of the battery cell and the second sidewall.

6. The battery of claim 1, wherein at least one of the first support and the second support is connected to the battery cell.

7. The battery of claim 1, wherein the first support portion and the second support portion are connected to a side of the main body portion facing the battery cell,

the battery also comprises a heat exchange tube, wherein the heat exchange tube is positioned between the first side wall and the battery cell, and the first supporting part and the second supporting part are oppositely arranged at two sides of the heat exchange tube.

8. The battery of claim 1, wherein the first support comprises a first support arm and a second support arm;

one end of the first supporting arm is connected to the main body part;

the second support arm is connected to the other end of the first support arm, which is away from the main body part, and extends from the first support arm towards or away from the end wall, and the second support arm is connected to the battery cell.

9. The battery of claim 8, wherein the first support portion is located on a side of the second support portion facing away from the end wall, the first support arm extending in a direction facing away from the end wall.

10. The battery of claim 1, wherein the number of the first support portions and the second support portions is plural, and the plural first support portions and the plural second support portions are each arranged at intervals in a second direction intersecting a direction perpendicular to the end wall.

11. The battery of claim 1, wherein the buffer member comprises an elastic member.

12. An electrical device comprising a battery according to any one of claims 1-11 for providing electrical energy.

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