CN219203354U - Battery and electricity utilization device - Google Patents

Abstract

The application provides a battery and power consumption device, the battery includes box, battery monomer and buffering support. The box body comprises a supporting wall and a first side wall connected with the supporting wall; the battery unit is accommodated in the box body and connected to the supporting wall; at least part of the buffer bracket is positioned between the first side wall and the battery cell and is connected with the first side wall and the battery cell. The application can prolong the service life of the battery.

Description

Battery and electricity utilization device

Technical Field

The present disclosure relates to battery technology, and particularly to a battery and an electric device.

Background

Batteries 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 case, a battery cell, and a buffer support. The box body comprises a supporting wall and a first side wall connected with the supporting wall; the battery unit is accommodated in the box body and connected to the supporting wall; at least part of the buffer bracket is positioned between the first side wall and the battery cell and is fixedly connected with the first side wall and the battery cell.

And a buffer bracket is arranged between the first side wall and the battery monomer, so that when the battery is extruded along the arrangement direction of the first side wall and the battery monomer, the buffer bracket can absorb energy through deformation of the buffer bracket to play a role in buffering, reduce the damage suffered by the battery monomer, improve the extrusion resistance of the side surface of the battery, further prolong the service life of the battery and improve the reliability. And the buffer bracket fixedly connects the battery monomer to the first side wall, namely, the connection strength of the battery monomer and the box body is increased, and the shaking amplitude of the battery monomer is reduced.

In some embodiments, the case includes two first side walls disposed opposite along a first direction and two second side walls disposed opposite along a second direction, the two first side walls and the two second side walls are disposed alternately and connected end to end, a buffer support is disposed between at least one first side wall and the battery cell, and the first direction and the second direction intersect.

In the technical scheme, the two first side walls and the two second side walls enclose to form a quadrilateral accommodating space, so that the processing and the manufacturing are facilitated.

In some embodiments, the number of the buffer brackets is two, and the two buffer brackets are connected with the two first side walls in a one-to-one correspondence.

In the above technical scheme, two buffer brackets are arranged to be respectively connected with the two first side walls one by one, so that the two buffer brackets form buffer effects on two opposite sides of the integral structure formed by a plurality of battery monomers in the first direction, the anti-extrusion capacity of the side face of the battery is further improved, and the service life of the battery is further prolonged.

In some embodiments, the spacing between the two first sidewalls is less than or equal to the spacing between the two second sidewalls.

In the above technical scheme, the distance between the two first side walls is smaller than or equal to the distance between the two second side walls, and correspondingly, the size of the integral structure formed by the plurality of battery monomers in the first direction is smaller than or equal to the size of the integral structure formed by the plurality of battery monomers in the second direction, so that the possibility that the battery monomers are extruded on the first side walls is higher, the buffer bracket is connected to the first side walls, the buffer effect is more favorably exerted, and the possibility that the battery monomers are damaged is reduced.

In some embodiments, the case includes two first side walls disposed opposite to each other along a first direction, and a buffer support is disposed between at least one first side wall and the battery cell, where the buffer support includes a main body portion and a support member, the main body portion is connected to the first side wall, and the support member is disposed on a side of the main body facing the battery cell and encloses with the main body portion to form a buffer cavity.

In the above technical scheme, the support piece encloses with the main part to establish and forms the buffer chamber, and the battery monomer is when receiving the extrusion, and the buffer chamber absorbs energy to the deformation of buffering support crushing, therefore the cushioning effect of buffer support is better, so further improves the anti extrusion ability of battery side.

In some embodiments, the number of supports is a plurality, the plurality of supports being arranged along a second direction, wherein the second direction intersects the first direction.

In the technical scheme, the number of the supporting pieces is set to be multiple, so that multiple buffer cavities are formed, the buffer capacity of the buffer support can be further improved, the damage to the battery monomers is reduced, and the extrusion resistance of the side face of the battery is improved.

In some embodiments, the support member includes a first connection plate disposed opposite the main body portion and connected to the battery cell, and two second connection plates aligned along a second direction and connected to the first connection plate and the main body portion, the second direction intersecting the first direction.

In the above technical scheme, because the support piece is provided with two second connecting plates which are oppositely arranged and enclose to form the buffer cavity, and the second connecting plates are connected between one side wall and the battery cell, the buffer cavity with the structure has better extrusion resistance.

In some embodiments, the support further comprises a reinforcing structure disposed in the cushion chamber and connected to the body portion and the first connecting plate.

In the above technical scheme, the reinforcing structure is disposed in the buffer cavity and is connected to the main body portion and the first connecting plate, so that the reinforcing structure can provide support in the arrangement direction of the first side wall and the battery cells, that is, can provide a buffer effect when the battery cells are extruded in the direction, and further improves the extrusion resistance of the side surfaces of the battery cells.

In some embodiments, the buffer bracket further includes a third connection plate connected to the first connection plate and facing a surface of the battery cell facing the support wall.

In the above technical scheme, the third connecting plate is arranged and positioned on one side of the battery cell close to the supporting wall, so that a protection effect is formed on the bottom of the battery cell.

In some embodiments, the third connection plate includes a plate body connected to a surface of the battery cell facing the support wall, and an extension connected to the first connection plate and the main body.

In the above technical scheme, the extension part is arranged to connect the first connecting plate and the main body part, so that the rigidity of the buffer bracket is further increased, and the extrusion resistance of the side surface of the battery is improved.

In some embodiments, the buffer bracket further includes a baffle plate and a plurality of spacers arranged at intervals along the second direction, the baffle plate is bent from one end of the third connecting plate, which is away from the main body, toward the supporting wall, the spacers are disposed on one side of the baffle plate, which is away from the third connecting plate, and two adjacent spacers are opposite and form a storage space; the battery also comprises a buffer piece, wherein the buffer piece is arranged between the supporting wall and the battery cell, and at least part of the buffer piece is accommodated in the storage space.

In the technical scheme, the plurality of partition plates are arranged to form a limiting effect on the buffer piece, so that the displacement of the buffer piece is reduced, the buffer piece is positioned at an initial position corresponding to the battery cell as much as possible, and the protection effect of the buffer piece on the battery cell is improved.

In some embodiments, the stiffness of the cushioning bracket is less than the stiffness of the side wall of the battery cell.

In the above technical scheme, so set up, when then the battery receives comparatively serious extrusion, the buffer support can absorb energy earlier and be crushed the deformation, reduces the injury that battery monomer received.

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 structural diagram of an electrical device according to an embodiment of the present disclosure;

fig. 2 is a schematic view of an exploded structure of a battery according to an embodiment of the present application;

FIG. 3 is a partial cross-sectional view of a battery provided in an embodiment of the present application;

FIG. 4 is a schematic view of a structure of a buffer bracket of the battery shown in FIG. 2;

FIG. 5 is an enlarged view of FIG. 4 at A;

fig. 6 is another schematic structural view of a buffer bracket of a battery according to an embodiment of the present application.

In the drawings, the drawings are not drawn to scale.

Reference numerals of the specific embodiments are as follows:

1. a case; 11. a support wall; 12. a first sidewall; 13. a second sidewall;

2. a battery cell;

3. a buffer bracket; 31. a main body portion; 32. a support; 33. a buffer chamber; 34. a first connection plate; 35. a second connecting plate; 36. a reinforcing structure; 37. a third connecting plate; 371. a plate body; 372. an extension; 38. a baffle; 39. a partition plate; 30. a storage space;

4. a buffer member;

5. a vehicle; 6. a battery; 7. a controller; 8. a motor;

x, a first direction; y, second 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 includes box and battery monomer, and the battery monomer holds in the box.

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 sides, the rigidity of the sides 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 buffer support between the lateral wall of battery monomer and box, when the side of battery received the extrusion, thereby the buffer support can play the cushioning effect through the deformation absorption energy of self, reduces the injury that the battery monomer received, improves the anti extrusion ability of battery side, and then prolongs the life of 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 5 is provided with a battery 6, and the battery 6 may be provided at the bottom or at the head or at the tail of the vehicle 5. The battery 6 may be used for power supply of the vehicle 5, for example, the battery 6 may serve as an operating power source of the vehicle 5.

The vehicle 5 may also include a controller 7 and a motor 8, the controller 7 being configured to control the battery 6 to power the motor 8, for example, for operating power requirements during start-up, navigation and travel of the vehicle 5.

In some embodiments of the present application, the battery 6 may not only serve as an operating power source for the vehicle 5, but also as a driving power source for the vehicle 5, instead of or in part instead of fuel oil or natural gas, to provide driving power for the vehicle 5.

Fig. 2 is a schematic diagram of an exploded structure of a battery according to an embodiment of the present application, and fig. 3 is a partial cross-sectional view of the battery according to the embodiment of the present application.

As shown in fig. 2 and 3, the battery 6 of the embodiment of the present application includes a case 1, a battery cell 2, and a buffer bracket 3, the case 1 including a support wall 11 and a first side wall 12 connected to the support wall 11; the battery cell 2 is accommodated in the case 1 and connected to the supporting wall 11, and at least part of the buffer bracket 3 is located between the first side wall 12 and the battery cell 2 and fixedly connected to the first side wall 12 and the battery cell 2.

In this embodiment, the fixed connection refers to a connection mode of fixing the buffer bracket 3, the first side wall 12 and the battery cell 2 together, that is, the three can still maintain a connection state without external force. By way of example, the fixed connection may include bonding, integral molding, welding, threading, clamping, riveting, and the like.

Optionally, the buffer bracket 3 and the first side wall 12 may be connected by a threaded connection or an adhesive connection; the buffer bracket 3 and the battery cell 2 can be connected in an adhesive manner.

Alternatively, the bottom of the battery cell 2 opposite to the electrode terminals is fixed to the support wall 11.

The support wall may be located at the upper side of the battery cell 2 or at the lower side of the battery cell 2 when the battery is mounted to the power consumption device.

The embodiment of the present application does not limit the specific structure of the buffer bracket 3. The buffer bracket 3 is an elongated structure, and extends in the longitudinal direction of the first side wall 12. The first sidewall 12 has a length direction and a height direction, the height direction is parallel to the arrangement direction of the top and bottom of the battery cell 2, and the length direction may be perpendicular to the height direction. For example, the buffer bracket 3 may have a block structure or a plate structure, and the buffer bracket 3 may be provided in plurality, and the plurality of buffer brackets 3 may be arranged along the length direction of the first sidewall 12.

The first side wall 12 and the supporting wall 11 in the embodiment of the present application may be directly connected or indirectly connected. The first side wall 12 forms an angle with the support wall 11.

The buffer bracket 3 is made of metal material, plastic or other materials.

The buffer bracket 3 is arranged between the first side wall 12 and the battery monomer 2, so that when the battery is extruded along the arrangement direction of the first side wall 12 and the battery monomer 2, the buffer bracket 3 can absorb energy through deformation of the battery to play a role in buffering, the damage suffered by the battery monomer 2 is reduced, the extrusion resistance of the side face of the battery is improved, the service life of the battery is prolonged, and the reliability is improved. And, buffer bracket 3 is with battery monomer 2 fixed connection in first lateral wall 12, has increased battery monomer 2 and box 1's joint strength promptly, has reduced the range that battery monomer 2 rocked.

In some embodiments, the case 1 includes two first side walls 12 disposed opposite to each other along the first direction X and two second side walls 13 disposed opposite to each other along the second direction Y, the two first side walls 12 and the two second side walls 13 are disposed alternately and connected end to end, a buffer bracket 3 is disposed between at least one first side wall 12 and the battery cell 2, and the first direction X and the second direction Y intersect.

In the embodiment of the present application, whether the structures of the two first side walls 12 are the same or not is not limited, and the structures of the two first side walls 12 may be the same or different; as well as the second side wall 13, this application will not be repeated here.

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

The two first side walls 12 and the two second side walls 13 are connected end to end, i.e. the two first side walls 12 are connected to the same side ends of the two second side walls 13, respectively.

The two first side walls 12 and the two second side walls 13 enclose to form a quadrilateral accommodating space, so that the processing and the manufacturing are facilitated.

In some embodiments, the number of the buffer brackets 3 is two, and the two buffer brackets 3 are connected to the two first side walls 12 in a one-to-one correspondence.

In this embodiment, whether the structures of the two buffer brackets 3 are the same or not is not limited, and the structures of the two buffer brackets 3 may be the same or different.

Two buffer brackets 3 are arranged to be respectively connected with the two first side walls 12 one by one, so that the two buffer brackets 3 form buffer effects on two opposite sides of the integral structure formed by a plurality of battery monomers 2 in the first direction X, the anti-extrusion capacity of the side face of the battery is further improved, and the service life of the battery is further prolonged.

And, two buffer brackets 3 still can further strengthen the structural strength that battery monomer 2 and box 1 are connected, and two buffer brackets 3 still can form the spacing in first direction X to a plurality of battery monomer 2, further reduce the range of box 1 and battery monomer 2 relative motion.

In some embodiments, the spacing between the two first side walls 12 is less than or equal to the spacing between the two second side walls 13.

The distance between the two first side walls 12 is smaller than or equal to the distance between the two second side walls 13, and correspondingly, the dimension of the integral structure formed by the plurality of battery cells 2 in the first direction X is smaller than or equal to the dimension in the second direction Y, so that the possibility that the battery cells 2 are extruded in the first side walls 12 is higher, and the buffer bracket 3 is connected to the first side walls 12, so that the buffer effect is better exerted, and the possibility that the battery cells 2 are damaged is reduced. Further, the length of the first side wall 12 is longer, the corresponding size of the buffer bracket 3 can be larger, and the crush resistance of the side surface of the battery 6 can be further improved.

FIG. 4 is a schematic view of a structure of a buffer bracket of the battery shown in FIG. 2; FIG. 5 is an enlarged view of FIG. 4 at A; fig. 6 is another schematic structural view of a buffer bracket of a battery according to an embodiment of the present application.

Referring to fig. 4 to 6, in some embodiments, the case 1 includes two first sidewalls 12 disposed opposite to each other along a first direction X, a buffer bracket 3 is disposed between at least one of the first sidewalls 12 and the battery cell 2, the buffer bracket 3 includes a main body 31 and a support member 32, the main body 31 is connected to the first sidewalls 12, and the support member 32 is disposed on a side of the main body 31 facing the battery cell 2 and encloses a buffer cavity 33 with the main body 31.

The main body 31 of the present embodiment is fixedly connected to the first side wall 12. Further, the main body 31 and the first side wall 12 are connected by adhesion, welding, or the like.

The present embodiment does not limit the shape of the main body 31. Illustratively, the body portion 31 includes a plate-like structure having one side connected to the first sidewall 12 and the other side connected to the support 32.

The shape of the support 32 is not limited in the embodiment of the present application. The support 32 includes an L-shaped structure, and the L-shaped structure includes a first side plate and a second side plate that are connected in a bending manner, wherein one end of the first side plate opposite to the second side plate is connected to the main body 31, the second side plate is connected to the battery cell 2 in a fitting manner, and the first side plate, the second side plate and the main body 31 enclose to form a buffer cavity.

The support member 32 and the main body 31 enclose a buffer cavity 33, when the battery unit 2 is extruded, the buffer bracket 3 is crushed and deformed, and the buffer cavity 33 absorbs energy, so that the buffer effect of the buffer bracket 3 is better, and the anti-extrusion capacity of the side surface of the battery is further improved.

In some embodiments, the number of supports 32 is a plurality, and the plurality of supports 32 are arranged along a second direction Y, wherein the second direction Y intersects the first direction X.

The plurality of support members 32 of the present embodiment may be disposed at intervals along the second direction Y, or may be connected to each other along the second direction Y.

Optionally, the second direction Y is perpendicular to the first direction X.

The number of the supporting members 32 is set to be a plurality, so that a plurality of buffer cavities 33 are formed, the buffer capacity of the buffer support 3 can be further improved, the damage to the battery cells 2 is reduced, and the extrusion resistance of the side surfaces of the battery is improved.

In some embodiments, the support 32 includes a first connection plate 34 disposed opposite the body portion 31 and connected to the battery cell 2, and two second connection plates 35 aligned along a second direction Y and connected to the first connection plate 34 and the body portion 31, the second direction Y intersecting the first direction X.

The first connection plate 34 of the present embodiment is disposed facing the battery cell 2 and fixedly connected with the battery cell 2. The first connecting plate 34 is bonded to the battery cell 2, for example.

Optionally, the second direction Y is perpendicular to the first direction X.

Alternatively, two second connection plates 35 are oppositely disposed along the second direction Y. Further alternatively, two second connection plates 35 are respectively arranged perpendicular to the second direction Y.

The shape of the first connecting plate 34 and the second connecting plate 35 is not limited in the embodiment of the present application. Illustratively, the first connecting plate 34 is a rectangular plate or a trapezoidal plate, and the second connecting plate 35 is a rectangular plate, an L-shaped plate, or another irregularly shaped plate.

The first connecting plate 34 and the two second connecting plates 35 in the embodiment of the application enclose a substantially U-shaped structure, and at least part of the opening of the U-shaped structure is covered by the main body 31, and since the support 32 has two second connecting plates 35 disposed opposite to each other, the second connecting plates 35 are connected between a side wall 12 and the battery cell 2, the buffer chamber 33 of the structure has a better anti-extrusion capability.

In addition, the first connecting plate 34 is connected to the battery cell 2, and the plate-shaped structure of the first connecting plate 34 can increase the connection area with the battery cell 2, so as to improve the connection stability of the buffer bracket 3 and the battery cell 2.

In some embodiments, the support 32 further includes a reinforcing structure 36, and the reinforcing structure 36 is disposed in the buffer chamber 33 and connected to the main body 31 and the first connecting plate 34.

The specific structural form of the reinforcing structure 36 is not limited in this embodiment. Illustratively, the reinforcing structure 36 may be a plate-like structure or a rod-like structure. Optionally, the reinforcing structure 36 is a plate-like structure, and the reinforcing structure 36 is disposed opposite to the second connecting plate 35. Further alternatively, the second connection plate 35 is disposed perpendicular to the second direction Y.

The connection manner of the reinforcing structure 36 with the main body 31 and the first connecting plate 34 is not limited in this embodiment. Illustratively, the stiffening mechanism is welded or integrally formed with the body portion 31, the first connecting plate 34.

Optionally, the number of the reinforcing structures 36 is plural, and the plurality of reinforcing structures 36 are sequentially disposed in the buffer cavity 33 at intervals along the second direction Y.

The reinforcing structure 36 is disposed in the buffer cavity 33 and is connected to the main body 31 and the first connecting plate 34, so that the reinforcing structure 36 can provide support in the arrangement direction of the first sidewall 12 and the battery cell 2, that is, can provide a buffer effect when the battery is pressed in the direction, and further improves the anti-pressing capability of the battery side.

In some embodiments, the buffer bracket 3 further comprises a third connection plate 37, the third connection plate 37 being connected to the first connection plate 34 and facing the surface of the battery cell 2 facing the support wall 11.

Optionally, a third connection plate 37 is connected to the surface of the battery cell 2 facing the support wall 11. The third connecting plate 37 is fixedly connected, for example glued, to the surface of the battery cell 2 facing the support wall 11. Still another example, the third connection plate 37 abuts against the surface of the battery cell 2 facing the support wall 11.

The third connecting plate 37 of the embodiment of the present application faces a part of the surface of the battery cell 2 facing the support wall 11.

Optionally, the third connecting plate 37 is equal in size to the main body 31 in the second direction Y.

Alternatively, the number of the supporting pieces 32 is plural, and the plurality of supporting pieces 32 are arranged along the second direction Y. The third connection plate 37 is connected to the plurality of first connection plates 34.

The third connection plate 37 is provided at one side of the battery cell 2 near the support wall 11, thereby protecting the bottom of the battery cell 2.

In some embodiments, the third connection plate 37 includes a plate body 371 and an extension 372, the plate body 371 is connected to a surface of the battery cell 2 facing the support wall 11, and the extension 372 is connected to the first connection plate 34 and the main body 31.

The present embodiment does not limit the connection manner of the plate body 371 to the bottom surface of the battery cell 2. Illustratively, the plate body 371 is adhered to or in abutment with the bottom surface of the battery cell 2.

Alternatively, the extension 372 is connected to both the main body 31 and the end of the first connection plate 34 facing the support wall 11.

Optionally, the end of the second connection plate 35 facing the support wall 11 is connected to the extension 372.

Optionally, the end of the reinforcing structure 36 facing the support wall 11 is connected to an extension 372.

The extension 372 is provided to connect the first connection plate 34 and the main body 31, further increasing the rigidity of the buffer bracket 3, and improving the crush resistance of the battery side.

In some embodiments, the buffer bracket 3 further includes a baffle 38 and a plurality of partitions 39 spaced apart along the second direction Y, the baffle 38 is bent from an end of the third connecting plate 37 facing away from the main body 31 toward the support wall 11, the partitions 39 are disposed on a side of the baffle 38 facing away from the third connecting plate 37, and two adjacent partitions 39 are opposite and form the storage space 30; the battery further comprises a buffer member 4, the buffer member 4 is disposed between the support wall 11 and the battery cell 2, and at least part of the buffer member 4 is accommodated in the storage space 30.

Optionally, the baffle 38 is at an angle of 90 ° to the third web 37.

Alternatively, the partition 39 is disposed perpendicular to the second direction Y.

The buffer member 4 of the present embodiment is made of a soft material to buffer and protect the battery cells 2. Illustratively, the cushioning member is made of silicon foam or sponge.

The plurality of partition plates 39 are provided to limit the buffer member 4, so that the displacement of the buffer member 4 is reduced to be positioned at the initial position corresponding to the battery cell 2 as much as possible, and the protection effect of the buffer member 4 on the battery cell 2 is increased.

In some embodiments, the stiffness of the buffer bracket 3 is less than the stiffness of the side wall of the battery cell 2.

So set up, when then the battery receives comparatively serious extrusion, buffer bracket 3 can absorb energy earlier and be crushed the deformation, reduce the injury that battery monomer 2 received.

The embodiment of the application also provides an electricity utilization device, which comprises the battery 6, wherein the battery is used for providing electric energy.

Referring to fig. 2-6, the embodiment of the present application provides a battery 6, where the battery 6 includes a case 1, a battery unit 2, and a buffer bracket 3, and the case 1 includes a support wall 11 and a first side wall 12 connected to the support wall 11; the battery cell 2 is accommodated in the case 1 and connected to the support wall 11, and at least part of the buffer bracket 3 is located between the first side wall 12 and the battery cell 2 and connected to the first side wall 12 and the battery cell 2. The box 1 comprises two first side walls 12 which are oppositely arranged along a first direction X, and two second side walls 13 which are oppositely arranged along a second direction Y, wherein the two first side walls 12 and the two second side walls 13 are alternately arranged and connected end to end, the number of the buffer brackets 3 is two, and the two buffer brackets 3 are connected with the two first side walls 12 in a one-to-one correspondence manner. The spacing between the two first side walls 12 is smaller than the spacing between the two second side walls 13.

The case 1 includes two first side walls 12 that set up relatively along first direction X, is equipped with buffering support 3 between at least one first side wall 12 and battery cell 2, and buffering support 3 includes main part 31 and support piece 32, and main part 31 is connected in first side wall 12, and support piece 32 sets up in main part 31 towards battery cell 2's one side and encloses with main part 31 and establish and form buffer chamber 33.

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 (13)

1. A battery, comprising:

the box body comprises a supporting wall and a first side wall connected with the supporting wall;

a battery cell accommodated in the case and connected to the support wall; and

and at least part of the buffer bracket is positioned between the first side wall and the battery cell and is fixedly connected with the first side wall and the battery cell.

2. The battery of claim 1, wherein the housing comprises two first side walls disposed opposite each other in a first direction and two second side walls disposed opposite each other in a second direction, the two first side walls and the two second side walls being disposed alternately and end to end,

at least one first side wall and the battery cell are provided with the buffer support therebetween, and the first direction and the second direction are intersected.

3. The battery according to claim 2, wherein the number of the buffer holders is two, and two buffer holders are connected to two first side walls in one-to-one correspondence.

4. The battery of claim 2, wherein a spacing between two of the first side walls is less than or equal to a spacing between two of the second side walls.

5. The battery according to any one of claims 1 to 4, wherein the case includes two first side walls disposed opposite to each other in a first direction, the buffer support being provided between at least one of the first side walls and the battery cell,

the buffer support comprises a main body part and a support piece, wherein the main body part is connected to the first side wall, and the support piece is arranged on one side of the main body, which faces the battery cell, and forms a buffer cavity together with the main body part in a surrounding mode.

6. The battery of claim 5, wherein the battery is configured to provide the battery with a battery cell,

the number of the supporting pieces is a plurality, and the supporting pieces are arranged along a second direction, wherein the second direction is intersected with the first direction.

7. The battery according to claim 5, wherein the support member includes a first connection plate disposed opposite to the main body portion and connected to the battery cell, and two second connection plates arranged in a second direction intersecting the first direction and connected to the first connection plate and the main body portion.

8. The battery of claim 7, wherein the support further comprises a reinforcing structure disposed in the buffer chamber and connected to the main body portion and the first connection plate.

9. The battery of claim 7, wherein the buffer bracket further comprises a third connection plate connected to the first connection plate and facing a surface of the battery cell facing the support wall.

10. The battery of claim 9, wherein the third connection plate includes a plate body connected to a surface of the battery cell facing the support wall and an extension connected to the first connection plate and the main body.

11. The battery according to claim 9, wherein the buffer bracket further comprises a baffle plate and a plurality of partition plates arranged at intervals along the second direction, the baffle plate is bent from one end of the third connecting plate, which is away from the main body part, towards the supporting wall, the partition plates are arranged on one side of the baffle plate, which is away from the third connecting plate, and two adjacent partition plates are opposite and form a storage space;

the battery also comprises a buffer piece, wherein the buffer piece is arranged between the supporting wall and the battery cell, and at least part of the buffer piece is accommodated in the storage space.

12. The battery of claim 1, wherein the cushioning brackets have a stiffness that is less than a stiffness of a sidewall of the battery cell.

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

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