CN218385522U - Box, battery and power consumption device - Google Patents

Abstract

The application provides a box body, a battery and an electric device, wherein the box body comprises a first box body part and a second box body part, and the second box body part and the first box body part are mutually covered to form an accommodating cavity for accommodating a battery monomer; the first box body portion comprises a body portion, a reinforcing piece and a fixing piece, the fixing piece is connected with the body portion, and the reinforcing piece is clamped between the body portion and the fixing piece. The application provides a box includes this somatic part, reinforcement and mounting through setting up first box portion to through being connected of mounting and this somatic part, press from both sides the reinforcement and locate between mounting and this somatic part, improve the joint strength of this somatic part and reinforcement, guarantee the reinforcement to the enhancement effect of box structural strength, so, be favorable to improving the overall structure intensity of box.

Description

Box, battery and power consumption device

Technical Field

The application relates to the technical field of batteries, in particular to a box body, a battery and an electric device.

Background

Batteries are widely used in electronic devices such as mobile phones, notebook computers, battery cars, electric automobiles, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, electric tools, and the like.

In the development of battery technology, how to improve the structural strength of a box body of a battery is an urgent problem to be solved in the battery technology, besides improving the performance of the battery.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a box, battery and electric device, can improve the structural strength of box.

In a first aspect, an embodiment of the present application provides a box body, including a first box body portion and a second box body portion; the second box body part is mutually covered with the first box body part to form an accommodating cavity for accommodating the battery monomer; the first box body part comprises a body part, a reinforcing piece and a fixing piece, the fixing piece is connected with the body part, and the reinforcing piece is clamped between the body part and the fixing piece.

The box that this application embodiment provided includes this somatic part, reinforcement and mounting through setting up first box portion to through being connected of mounting and this somatic part, realize that the reinforcement presss from both sides and locates between mounting and this somatic part, improve the joint strength of this somatic part and reinforcement, guarantee the reinforcement to the enhancement effect of box intensity, so, be favorable to improving the overall structure intensity of box.

In some embodiments, the body portion includes a plurality of projections disposed opposite the receiving cavity, the plurality of projections extending in a first direction and being spaced apart in a second direction, the first direction and the second direction being perpendicular; the reinforcing member extends in the second direction and abuts at least a portion of the protrusion. The bending strength of the body part along the first direction and the second direction is improved, and the structural strength of the box body is improved.

In some embodiments, the dimension of the case in the first direction is smaller than the dimension in the second direction. Therefore, the convex part is convenient to machine and form, the bending strength of the box body along the length direction is improved, and the structural strength of the box body is improved.

In some embodiments, the reinforcing member is strip-shaped and abuts against each of the protrusions. Thus, the structure of the reinforcing member can be simplified, so that the reinforcing member is light in weight and easy to process. And set up the reinforcement and offset with every convex part, can further improve the reinforcing effect of reinforcement to the structural strength of first box portion, and then improve the overall structure intensity of box.

In some embodiments, the fixing element is in a strip shape and extends along the first direction, and two sides of the fixing element along the first direction are respectively connected with the body portion, so that the reinforcing element is clamped between the body portion and the fixing element. The reliability of connection between the fixing piece and the body part is improved, and the fixing piece is ensured to stably clamp the reinforcing piece on the body part.

In some embodiments, the plurality of fasteners are spaced apart along the second direction. Thus, the connection stability of the reinforcing member and the body portion can be further improved.

In some embodiments, the reinforcing element and the fixing element are arranged on a side of the body part facing away from the accommodating cavity. Therefore, in the process of connecting the box body with the vehicle body and other structures of the electric device, the box body can be connected with the vehicle body through the fixing piece, and the connection strength and the connection reliability of the box body and the vehicle body are improved.

In some embodiments, the box body further comprises a buffer member, and at least part of the buffer member is arranged between the reinforcing member and the fixing member. Thus, the load such as impact and vibration between the reinforcing member and the fixing frame can be reduced, and the noise between the reinforcing member and the fixing member can be reduced.

In some embodiments, the body portion comprises a covering region, a first bending region and a second bending region, the first bending region connecting the covering region and the second bending region; the covering area is arranged to cover the accommodating cavity, the first bending area is bent relative to the covering area along the direction towards the second box body part, and the second bending area is bent relative to the first bending area along the direction back to the accommodating cavity; the fixed part is connected with the covering area, and the reinforcing part is arranged between the covering area and the fixed part; the second bending area is used for being connected with the second box body part. So, be favorable to improving convenience and the stability that first box portion and second box portion are connected.

In some embodiments, the box body further comprises a pressing strip, and the pressing strip is arranged on one side of at least part of the second bending area, which faces away from the second box body part, and is connected to the second box body part. Through setting up the layering to set up the layering and set up in at least partial second bending district one side of dorsad second boxy portion, and connect the layering in second boxy portion, be favorable to improving the joint strength of second bending district and second boxy portion.

In some embodiments, the pressing strip includes a connecting portion and a bending portion, the connecting portion is attached to the second bending region, and the bending portion is bent relative to the connecting portion in a direction away from the second bending region. So, be favorable to improving the area of contact of kink and first bending district, reduce the risk that the layering cut first bending district at the in-process of drunkenness.

In some embodiments, the box body further comprises a connecting piece, the connecting piece is connected with the pressing strip, the second bending area and the second box body portion, the connecting pieces are arranged at intervals along the circumferential direction of the first box body portion, and the distance between every two adjacent connecting pieces is smaller than or equal to 100mm. Therefore, the connecting strength of the connecting piece to the pressing strip, the second bending area and the second box body portion is guaranteed.

In some embodiments, the pressing strip has a first side surface, the second bending region has a second side surface, the first side surface is located on a side of the pressing strip opposite to the first bending region, the second side surface is parallel to the first side surface, the first side surface and the second side surface are arranged at a distance, and the first side surface is located on a side of the second side surface close to the accommodating cavity. Therefore, the risk that the batten cuts other structures of the electric device is reduced, and the installation of the batten is facilitated.

In some embodiments, the spacing d between the first side and the second side satisfies: d is less than or equal to 5mm. Therefore, the risk that other parts are cut by the pressing strip is reduced, and meanwhile, the connection strength of the pressing strip and the second bending area is guaranteed.

In some embodiments, the body portion further comprises a stiffener connecting the first and second bending regions. So, be favorable to improving the structural stability in first district and the second district of bending, and then improve the overall structure intensity of box.

In a second aspect, an embodiment of the present application provides a battery, including the box and the battery cell provided in any of the above embodiments, where the battery cell is accommodated in the accommodating cavity.

The battery provided by the embodiment of the application has the same technical effect due to the adoption of the box body provided by any one of the embodiments, and the details are not repeated herein.

In a third aspect, an embodiment of the present application provides an electric device, which includes the battery provided in the foregoing embodiment, where the battery is used to provide electric energy.

The power consumption device provided by the embodiment of the application adopts the battery provided by the embodiment, so that the same technical effects are not repeated herein.

The box, battery and power consumption device that this application embodiment provided include this somatic part, reinforcement and mounting through setting up first box portion to through being connected of mounting and this somatic part, locate the reinforcement clamp between mounting and this somatic part, improve the joint strength of this somatic part and reinforcement, guarantee the reinforcement to the enhancement effect of box structural strength, so, be favorable to improving the overall structure intensity of box.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used 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 it is obvious for a person skilled in the art to obtain other drawings based on the drawings without any creative effort.

FIG. 1 is a schematic structural diagram of a vehicle provided in an embodiment of the present application;

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

fig. 3 is a schematic structural diagram of a battery module in a battery provided in an embodiment of the present application;

fig. 4 is a schematic diagram illustrating an explosion structure of a battery cell in a battery provided by an embodiment of the present application;

FIG. 5 is a schematic structural diagram of the box body provided by the embodiment of the present application with a second box body part omitted;

FIG. 6 is an enlarged view of a portion of FIG. 5 at A;

FIG. 7 is a partial enlarged view at B in FIG. 5;

FIG. 8 is a schematic structural view of the case body for use in the embodiment of the present application, with the second case body portion and the fixing member omitted;

FIG. 9 is a schematic diagram of an exploded view of the container body provided in the embodiment of the present application with the second container body omitted;

fig. 10 is a partial enlarged view at C in fig. 9.

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

Description of the labeling:

1. a vehicle; 1a, a motor; 1b, a controller;

10. a battery;

20. a battery module;

30. a battery cell;

31. a housing; 311. a housing; 311a, an opening; 312. an end cap; 32. an electrode assembly;

40. a box body; 40a, an accommodating cavity; 41. a first tank portion; 411. a body portion; 4111. a convex portion; 4112. reinforcing ribs; 411a, coverage area; 411b, a first bending zone; 411c, second bending area; 411d, second side; 412. a reinforcement; 413. a fixing member; 42. a second tank portion; 43. a buffer member; 44. layering; 44a, a first side; 441. a connecting portion; 442. a bent portion; 45. a connecting member;

x, a first direction; y, second direction.

Detailed Description

Embodiments of the present application will be described in further detail below with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the application, but are not intended to limit the scope of the application, i.e., the application is not limited to the described embodiments.

In the description of the present application, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicate an orientation or positional relationship that is merely for convenience in describing the application and to simplify the description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. "vertical" is not strictly vertical, but is within the tolerance of the error. "parallel" is not strictly parallel but is within the tolerance of the error.

Reference in the specification 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 specification. 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 present application, it should also be noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and include, for example, fixed and removable connections as well as integral connections; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood as appropriate by one of ordinary skill in the art.

In this application, the battery cell may include a lithium ion secondary battery cell, a lithium ion primary battery cell, a lithium sulfur battery cell, a sodium lithium ion battery cell, a sodium ion battery cell, or a magnesium ion battery cell, and the embodiment of the present application is not limited thereto. The battery cell may be a cylinder, a flat body, a rectangular parallelepiped, or other shapes, which is not limited in the embodiments of the present application. The battery cells are generally divided into three types in an encapsulation manner: the cylindrical battery monomer, the square battery monomer and the soft package battery monomer are not limited in the embodiment of the application.

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, etc. Batteries generally include a case for enclosing one or more battery cells. The box can avoid liquid or other foreign matters to influence the charge or discharge of battery cells.

The battery monomer comprises an electrode assembly and electrolyte, wherein the electrode assembly consists of a positive plate, a negative plate and a separator. The battery cell mainly depends on metal ions moving between the positive plate and the negative plate to work. The positive plate comprises a positive current collector and a positive active substance layer, wherein the positive active substance layer is coated on the surface of the positive current collector, the current collector which is not coated with the positive active substance layer protrudes out of the current collector which is coated with the positive active substance layer, and the current collector which is not coated with the positive active substance layer is laminated to be used as a positive electrode lug. Taking a lithium ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobaltate, lithium iron phosphate, ternary lithium, lithium manganate, or the like. The negative pole piece includes negative pole mass flow body and negative pole active substance layer, and the surface of negative pole mass flow body is scribbled to the negative pole active substance layer, and the mass flow body protrusion in the mass flow body of having scribbled the negative pole active substance layer of not scribbling the negative pole active substance layer is as negative pole utmost point ear after the mass flow body of not scribbling the negative pole active substance layer is range upon range of. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon, silicon, or the like. The material of the spacer may be PP (polypropylene) or PE (polyethylene). In addition, the electrode assembly may have a winding structure or a lamination structure, and the embodiment of the present application is not limited thereto.

The inventor finds that the case body of the battery is easy to crack in the using process, and then carries out systematic analysis and research on the structure and the manufacturing process of the case body, and as a result, the inventor finds that the case body of the battery is easy to crack in the using process, and as a result, the inventor finds that the structure and the manufacturing process of the case body are systematically analyzed and researched after the problem that the service life of a single body of a mechanism is short, the structure and the working process of the single body of the battery are systematically analyzed and researched, and as a result, although the reinforcing member is arranged on the case body of the battery, the connection strength between the reinforcing member and the body part of the case body is low, the case body is subjected to various vibration loads and impact loads in the using process of the battery, the connection between the reinforcing member and the body part fails, so that the body part of the case body cracks and the like, and the structural strength of the case body is seriously influenced.

Based on the above problems discovered by the inventor, the inventor improves the structure of the box body, and the technical scheme described in the embodiment of the application is suitable for the box body, the battery containing the box body and the electric device using the battery.

The electric device can be a vehicle, a mobile phone, a portable device, a notebook computer, a ship, a spacecraft, an electric toy, an electric tool and the like. The vehicle can be a fuel oil vehicle, a 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 and the like; spacecraft include aircraft, rockets, space shuttles, and spacecraft, among others; the electric toys include stationary or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric airplane toys, and the like; the electric power tools include metal cutting electric power tools, grinding electric power tools, assembly electric power tools, and electric power tools for railways, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, electric impact drills, concrete vibrators, and electric planers. The embodiment of the present application does not particularly limit the above electric devices.

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

As shown in fig. 1, a battery 10 is provided inside a vehicle 1. The battery 10 may be disposed at the bottom or the head or the tail of the vehicle 1. The battery 10 may be used for power supply of the vehicle 1, and for example, the battery 10 may serve as an operation power source of the vehicle 1.

The vehicle 1 may further include a controller 1b and a motor 1a. The controller 1b is used to control the battery 10 to supply power to the motor 1a, for example, for operational power demand at the time of starting, navigation, and traveling of the vehicle 1.

In some embodiments of the present application, the battery 10 may not only serve as an operating power source of the vehicle 1, but also serve as a driving power source of the vehicle 1, instead of or in part of fuel or natural gas, to provide driving power to the vehicle 1.

Referring to fig. 2, the battery 10 includes battery cells (not shown in fig. 2). The battery 10 may further include a case for accommodating the battery cells.

The case 40 is used to accommodate the battery cells, and the case 40 may have various structures. In some embodiments, chest 40 may include a first chest portion 41 and a second chest portion 42. The first tank portion 41 and the second tank portion 42 cover each other. The first tank portion 41 and the second tank portion 42 together define a housing space for housing the battery cells. The second casing part 42 may be a hollow structure with one open end, the first casing part 41 is a plate-shaped structure, and the first casing part 41 covers the open side of the second casing part 42 to form a casing with an accommodating space; the first tank portion 41 and the second tank portion 42 may be both hollow structures with one side open. The open side of the first casing portion 41 covers the open side of the second casing portion 42 to form a casing having an accommodation space. Of course, the first tank portion 41 and the second tank portion 42 may be various shapes, such as a cylinder, a rectangular parallelepiped, and the like.

In order to improve the sealing performance after the first tank portion 41 and the second tank portion 42 are connected, a sealing member, such as a sealant or a gasket, may be disposed between the first tank portion 41 and the second tank portion 42.

Assuming that the first casing portion 41 covers the second casing portion 42, the first casing portion 41 may also be referred to as an upper casing cover, and the second casing portion 42 may also be referred to as a lower casing cover.

In the battery 10, one or more battery cells may be provided. If the number of the battery units is multiple, the multiple battery units can be connected in series or in parallel or in series-parallel. The series-parallel connection means that a plurality of battery monomers are connected in series and in parallel. The plurality of battery cells may be directly connected in series or in parallel or in series-parallel, and then the whole body formed by the plurality of battery cells is accommodated in the case, or the plurality of battery cells may be connected in series or in parallel or in series-parallel to form the battery module 20. The plurality of battery modules 20 are connected in series or in parallel or in series-parallel to form a whole, and are accommodated in the case 40.

In some embodiments, as shown in fig. 3, fig. 3 is a schematic structural view of the battery module 20 shown in fig. 2. In the battery module 20, there are a plurality of battery cells 30. The plurality of battery cells 30 are connected in series or in parallel or in series-parallel to form the battery module 20. The plurality of battery modules 20 are connected in series or in parallel or in series-parallel to form a whole, and are accommodated in the case 40.

In some embodiments, the plurality of battery cells 30 in the battery module 20 may be electrically connected to each other by a bus member, so as to realize parallel connection, series connection or parallel connection of the plurality of battery cells 30 in the battery module 20.

Referring to fig. 4, fig. 4 is an exploded view of the battery cell 30 shown in fig. 3. The battery cell 30 provided by the embodiment of the application comprises an electrode assembly 32 and a shell 31, wherein the shell 31 is provided with a containing cavity, and the electrode assembly 32 is contained in a containing cavity 32 a.

In some embodiments, the case 31 may include a case 311 and an end cap 312, the case 311 has a hollow structure with one side open, and the end cap 312 is covered at the opening 311a of the case 311 and is hermetically connected to form a sealed space for accommodating the electrode assembly 32 and the electrolyte.

In assembling the battery cell 30, the electrode assembly 32 may be first placed in the case 311, the cap 312 is then fitted to the opening 311a of the case 311, and then the electrolyte may be injected into the case 311 through the electrolyte injection port of the cap 312.

In some embodiments, the housing 31 may also be used to contain an electrolyte, such as an electrolyte. The housing 31 may take a variety of configurations.

Fig. 4 shows a schematic structural diagram of a battery cell 30 provided in an embodiment of the present application.

The housing 311 may be various shapes, such as a cylinder, a rectangular parallelepiped, or the like. The shape of the case 311 may be determined according to the specific shape of the electrode assembly 32. For example, if the electrode assembly 32 is of a cylindrical structure, the case 311 may alternatively be of a cylindrical structure. If the electrode assembly 32 has a rectangular parallelepiped structure, the case 311 may have a rectangular parallelepiped structure. In fig. 4, the case 311 and the electrode assembly 32 are each exemplarily a rectangular parallelepiped structure.

The material of the housing 311 may be various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, etc., and the embodiment of the present invention is not limited thereto.

The electrode assembly 32 accommodated in the case 311 may be one or more. In fig. 4, there are two electrode assemblies 32 housed in the case 311.

FIG. 5 is a schematic structural diagram of the box body provided by the embodiment of the present application, wherein the second box body part is omitted; fig. 6 and 7 show partial enlarged views of fig. 5 at a and B, respectively; FIG. 8 is a schematic structural diagram of the box body provided by the embodiment of the application, with a second box body part and a fixing part omitted; fig. 9 is a schematic diagram showing an explosive structure of the box body provided by the application, wherein the second box body part is omitted; fig. 10 shows a partial enlarged view at C in fig. 9.

As shown in fig. 3 and 5 to 10, the case 40 provided according to the embodiment of the present application includes a first case portion 41 and a second case portion 42, and the second case portion 42 and the first case portion 41 cover each other to form an accommodating cavity 40a for accommodating the battery cell 30. The first casing portion 41 includes a body portion 411, a reinforcing member 412, and a fixing member 413, the fixing member 413 is connected to the body portion 411, and the reinforcing member 412 is provided between the body portion 411 and the fixing member 413.

Alternatively, the first casing portion 41 may be an upper case cover, or the first casing portion 41 may be a lower case.

The fixing member 413 and the body 411 may be screwed, welded, riveted, or the like. The first tank portion 41 may be provided to include one fixing member 413, or the first tank portion 41 may be provided to include a plurality of fixing members 413.

When the reinforcing member 412 is interposed between the main body 411 and the fixing member 413, the reinforcing member 412 is interposed between the main body 411 and the fixing member 413 by the connection between the main body 411 and the fixing member 413. The reinforcing member 412 may serve to reinforce the structure of the body portion 411, and may provide the overall structural strength of the first tank portion 41 by way of support.

Alternatively, the body portion 411 may have a plate shape, or the body portion 411 may include a bottom wall and a side wall enclosing a peripheral side with the bottom wall. In an embodiment where the main body 411 includes a bottom wall and a side wall surrounding the bottom wall, the reinforcing member 412 may be disposed on the bottom wall of the main body 411 or on the side wall of the main body 411, which is not limited herein and may be selected according to actual needs.

Alternatively, the reinforcing member 412 may have a plate shape, a block shape, a straight bar shape or other shapes, and may be simply sandwiched between the fixing member 413 and the body member 411, and detachably connected between the fixing member 413 and the body member. The connection may be made to the main body 411 or the fixture 413 by means of adhesion or the like.

Alternatively, the fixing member 413 may have a strip, block, plate, or the like structure, and the fixing member 413 may be pressed on the reinforcing member 412 and connected to the body 411.

Alternatively, a plurality of fixing members 413 may be provided, and provided at intervals along the extending direction of the reinforcing member 412, or the fixing members 413 may be provided continuously along the extending direction of the reinforcing member 412, and the reinforcing of the connection of the reinforcing member 412 and the body portion 411 by the fixing members 413 may be achieved.

Alternatively, the reinforcing member 412 and the fixing member 413 may be provided on a side of the body portion 411 close to the accommodating chamber 40a, or may be provided on a side of the body portion 411 away from the accommodating chamber 40a.

Alternatively, the battery cell 30 may be a cylindrical battery cell or a square battery cell. In the battery monomer 30 assembling process, battery monomer 30 can be connected in series and parallel earlier and constitute the battery module afterwards, will carry out the series and parallel connection between the battery module again to place in holding chamber 40a, perhaps, can set up battery monomer 30 and do not constitute the battery module, connect in series and parallel each other and place in holding chamber 40a of box 40 between the battery monomer 30.

It is to be understood that only the first tank portion 41 may be provided with the reinforcing member 412 and the fixing member 413, and the second tank portion 42 may be provided with the reinforcing member 412 and the fixing member 413 at the same time.

The box 40 that this application embodiment provided includes this somatic part 411, reinforcement 412 and mounting 413 through setting up first box 41 to through being connected of mounting 413 with this somatic part 411, press from both sides reinforcement 412 and locate between mounting 413 and this somatic part 411, improve the joint strength of this somatic part 411 and reinforcement 412, guarantee the reinforcing effect of reinforcement 412 to box 40 structural strength, so, be favorable to improving the overall structure intensity of box 40.

Alternatively, the body 411 may have a flat plate shape, or may have a protrusion or a groove in a partial region.

In some embodiments, the body portion 411 includes a protrusion 4111 disposed opposite to the accommodating cavity 40a, and the plurality of protrusions 4111 extend along a first direction X and are spaced along a second direction Y, where the first direction X is perpendicular to the second direction Y. The stiffener 412 extends along the second direction Y and abuts against at least a portion of the protrusion 4111.

Alternatively, the protrusion 4111 may be formed by a stamping process or a bending process.

The dimension of the reinforcement 412 extending in the second direction Y may be the largest dimension of the box 40 in the second direction Y, or the reinforcement 412 may be provided to extend in the second direction Y for a part of the dimension of the box 40 in the second direction Y.

It can be understood that the provision of the body portion 411 including the protrusion 4111, and the provision of the protrusion 4111 extending along the first direction X is beneficial to improve the bending strength of the body portion 411 along the first direction X. The reinforcement 412 extends along the second direction Y and abuts against at least a portion of the protrusion 4111, which is beneficial to improving the bending strength of the body 411 along the second direction Y and ensuring the reinforcement of the reinforcement 412 on the structural strength of the first tank 41. Thus, the structural strength of the case 40 can be effectively improved.

Alternatively, the first direction X may be set as a longitudinal direction of the casing 40, and the second direction Y may be set as a width direction of the casing 40, or the first direction X may be set as a width direction of the casing 40, and the second direction Y may be set as a longitudinal direction of the casing 40.

In some embodiments, the dimension of the box 40 along the first direction X is smaller than the dimension along the second direction Y.

Thus, the first direction X is the width direction of the casing 40, and the second direction Y is the length direction of the casing 40. That is, the protrusions 4111 extend in the width direction of the case 40 and are spaced apart from each other in the longitudinal direction of the case 40. And the reinforcing member 412 extends along the length of the case 40.

It can be understood that the protrusion 4111 is provided to extend along the width direction of the box 40, so that the protrusion 4111 is formed by a stamping process or the like. The protrusions 4111 extend in the width direction, are spaced apart in the length direction, and the reinforcing member 412 extends in the length direction, which is beneficial to improving the bending strength of the box 40 in the length direction, and further improving the structural strength of the box 40.

In some embodiments, the stiffener 412 is strip-shaped and abuts against each protrusion 4111.

Alternatively, the reinforcing member 412 may have a plate-like bar shape, or may have a columnar bar shape. Providing the reinforcement member 412 in a strip shape can simplify the structure of the reinforcement member 412, making the reinforcement member 412 lighter in weight and easier to process. The reinforcing member 412 is disposed to abut against each protrusion 4111, so that the reinforcing effect of the reinforcing member 412 on the structural strength of the first tank portion 41 can be further improved, and the overall structural strength of the tank 40 can be further improved.

In some embodiments, the fixing element 413 is in a strip shape and extends along the first direction X, and two sides of the fixing element 413 along the first direction X are respectively connected to the body portion 411, so as to clamp the reinforcing element 412 between the body portion 411 and the fixing element 413.

The fixing element 413 extends along the first direction X, and the reinforcing element 412 extends along the second direction Y, so that the fixing element 413 intersects with the reinforcing element 412, and a plurality of strip-shaped fixing elements 413 can be arranged at intervals along the second direction Y, so as to improve the connection strength and the connection reliability of the fixing element 413 and the body 411. The two sides of the fixing element 413 along the first direction X are respectively connected to the main body 411, so as to improve the reliability of the connection between the fixing element 413 and the main body 411, and ensure that the fixing element 413 stably clamps the reinforcing element 412 on the main body 411.

In some embodiments, the plurality of fixing members 413 are spaced apart along the second direction Y.

Therefore, there are a plurality of fixing elements 413, and the fixing elements 413 are disposed at intervals along the second direction Y to clamp the reinforcing element 412 on the main body 411, so as to further improve the connection stability between the reinforcing element 412 and the main body 411, and further improve the structural strength of the box 40.

In some embodiments, the reinforcing member 412 and the fixing member 413 are disposed on a side of the body portion 411 facing away from the accommodating chamber 40a.

That is, the reinforcing member 412 and the fixing member 413 are disposed outside the box 40, so that the box 40 can be connected to the vehicle body via the fixing member 413 in the process of connecting the box 40 to the vehicle body of the electric device, and the connection strength and the connection reliability between the box 40 and the vehicle body can be improved.

In some embodiments, the box 40 further includes a buffer 43, and at least a portion of the buffer 43 is disposed between the reinforcing member 412 and the fixing member 413.

Alternatively, the buffer 43 may be foam, sponge, or other material with a certain buffering and vibration absorbing function.

All the cushion members 43 may be disposed between the reinforcing member 412 and the fixing member 413, a part of the cushion members 43 may be disposed between the reinforcing member 412 and the fixing member 413, and another part may be disposed at another position, for example, a position which is adhered to the outside of the box body 40 and is susceptible to impact, or the cushion members 43 may be disposed between the reinforcing member 412 and the main body 411.

Therefore, the buffer member 43 has the functions of absorbing vibration and reducing noise, and at least a part of the buffer member 43 is disposed between the reinforcing member 412 and the fixing member 413, so that when the box body 40 receives a load such as vibration and impact, the buffer member 43 can absorb a part of the load to reduce the load such as impact and vibration between the reinforcing member 412 and the fixing member 413 and reduce noise between the reinforcing member 412 and the fixing member 413.

In some embodiments, the body portion 411 includes a covered region 411a, a first folded region 411b, and a second folded region 411c, the first folded region 411b connecting the covered region 411a and the second folded region 411c. The covering region 411a is disposed to cover the accommodating chamber 40a, the first bending region 411b is bent with respect to the covering region 411a in a direction toward the second box portion 42, and the second bending region 411c is bent with respect to the first bending region 411b in a direction away from the accommodating chamber 40a. The fixing element 413 is connected to the covering area 411a, the reinforcing element 412 is arranged between the covering area 411a and the fixing element 413, and the second bending area 411c is used for being connected with the second box portion 42.

The covering region 411a is arranged to cover the receiving cavity 40a, the first bending region 411b is bent with respect to the covering region 411a, and the second bending region 411c is bent with respect to the first bending region 411b and is connected to the second box portion 42 via the second bending region 411c. The second bending region 411c is similar to a flange, and the second bending region 411c is connected to the second box portion 42, so that convenience and stability of connection between the first box portion 41 and the second box portion 42 are improved.

The covering area 411a is disposed opposite to the second box portion 42, and the reinforcement member 412 is disposed on the covering area 411a of the first box portion 41 to facilitate the connection of the reinforcement member 412 and the first box portion 41.

In some embodiments, the box 40 further includes a bead 44, and the bead 44 is disposed on a side of at least a portion of the second bending region 411c facing away from the second box portion 42 and is connected to the second box portion 42.

Alternatively, a bead 44 may be provided on each side of the second bending region 411c facing away from the second box portion 42. Alternatively, a portion of the second bending region 411c on a side facing away from the second box portion 42 is provided with the bead 44.

Alternatively, the bead 44, the second bending region 411c and the second box portion 42 may be connected by screwing, riveting, welding, etc. Illustratively, the second bending region 411c and the portion of the second box portion 42 can be sequentially connected and fastened through the pressing bar 44 and the second bending region by bolts or screws.

By arranging the pressing strip 44, arranging the pressing strip 44 on the side of at least part of the second bending area 411c opposite to the second box portion 42, and connecting the pressing strip 44 to the second box portion 42, it is beneficial to improve the connection strength between the second bending area 411c and the second box portion 42.

Alternatively, the bead 44 may have a flat strip shape, a round strip shape, an L-shape, or the like.

In some embodiments, the pressing strip 44 includes a connecting portion 441 and a bending portion 442, the connecting portion 441 is attached to the second bending region 411c, and the bending portion 442 is bent along a direction away from the second bending region 411c.

Specifically, the bead 44 is connected to the second case portion 42 through the connection portion 441 and the second bending region 411c. The bending portion 442 is bent relative to the connecting portion 441 along a direction back to the second bending region 411c, and the bending portion 442 extends along a direction parallel to the first bending region 411b, so that the contact area between the bending portion 442 and the first bending region 411b is increased, and the risk that the first bending region 411b is cut by the pressing strip 44 in the shifting process is reduced.

In some embodiments, the box 40 further includes a connecting member 45, the connecting member 45 connects the pressing strip 44, the second bending region 411c, and the second box portion 42, the plurality of connecting members 45 are spaced along the circumference of the first box portion 41, and the distance between two adjacent connecting members 45 is less than or equal to 100mm.

Illustratively, the distance between two adjacent connectors 45 may be 100mm, 80mm, 70mm, 60mm, 50mm, 40mm, or the like.

Alternatively, the connecting member 45 may be a screw, a bolt and nut, a rivet or a pin, or the like. The plurality of connecting members 45 are arranged at intervals along the circumferential direction of the first direction X, and the distance between two adjacent connecting members 45 is smaller than or equal to 100mm, which is beneficial to ensuring the connection strength of the connecting members 45 to the pressing strip 44, the second bending region 411c and the second box body part 42.

Alternatively, the pressing strip 44 may be disposed to protrude from the second bending region 411c, or may be disposed to be flush with the second bending region 411c, which is not limited herein.

In some alternative embodiments, the molding 44 has a first side 44a, the second bending region 411c has a second side 411d, the first side 44a is located on a side of the molding 44 facing away from the first bending region 411b, the second side 411d is parallel to the first side 44a, the first side 44a is spaced apart from the second side 411d, and the first side 44a is located on a side of the second side 411d adjacent to the accommodating cavity 40a.

That is, the edge of the pressing strip 44 that does not protrude from the second bending region 411c is set, so that the risk that the pressing strip 44 cuts other structures of the electric device is reduced, and the installation of the pressing strip 44 is facilitated.

In some embodiments, the spacing d between first side 44a and second side 411d satisfies: d is less than or equal to 5mm.

Alternatively, d may be 5mm, 4mm, 3mm, 2mm, 1mm, or the like.

In this way, while reducing the risk of the bead 44 cutting other parts, it is also beneficial to ensure the connection strength of the bead 44 and the second bending region 411c.

In some embodiments, the body portion 411 further includes a rib 4112, and the rib 4112 connects the first bending region 411b and the second bending region 411c.

Alternatively, the reinforcing rib 4112 may have a triangular shape, and two adjacent sides of the triangular shape connect the first bending region 411b and the second bending region 411c, respectively.

Set up strengthening rib 4112 to set up strengthening rib 4112 and connect first district 411b and the second district 411c of bending, be favorable to improving the structural stability of first district 411b and the second district 411c of bending, and then improve the overall structure intensity of box 40.

The battery 10 provided according to the embodiment of the present application includes the case 40 provided in any one of the above embodiments and the battery cell 30, and the battery cell 30 is accommodated in the accommodating cavity 40a. The battery 10 provided in the embodiment of the present application has the same technical effect due to the adoption of the box body 40 provided in any one of the above embodiments, and details are not described herein again.

According to the embodiment of the present application, the power utilization apparatus includes the battery 10 provided in the above embodiment, and the battery 10 is used for providing electric energy.

According to the power utilization device provided by the embodiment of the present application, since the battery 10 provided by the embodiment of the present application is adopted, the same technical effects are achieved, and details are not described herein.

While the present application has been described with reference to preferred embodiments, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the present application, and in particular, features shown in the various embodiments may be combined in any manner as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein, but rather to cover all embodiments falling within the scope of the appended claims.

Claims (17)

1. A box, characterized in that includes:

a first tank portion;

the second box body part is mutually covered with the first box body part to form an accommodating cavity for accommodating a battery monomer;

the first box body portion comprises a body portion, a reinforcing piece and a fixing piece, the fixing piece is connected with the body portion, and the reinforcing piece is clamped between the body portion and the fixing piece.

2. The cabinet as claimed in claim 1, wherein the body includes a projection portion disposed opposite to the receiving chamber, the projection portions extending in a first direction and being spaced apart in a second direction, the first direction being perpendicular to the second direction;

the reinforcing part extends along the second direction and is abutted against at least part of the convex part.

3. The cabinet as claimed in claim 2, wherein a dimension of the cabinet in the first direction is smaller than a dimension in the second direction.

4. A cabinet as claimed in claim 2, wherein the reinforcing member is in the form of a bar and abuts against each of the projections.

5. The cabinet of claim 2, wherein the fixing member is in a shape of a bar and extends along the first direction, and two sides of the fixing member along the first direction are respectively connected to the body portion so as to clamp the reinforcing member between the body portion and the fixing member.

6. A cabinet as claimed in claim 5, wherein a plurality of the fixing members are provided at intervals in the second direction.

7. A cabinet as claimed in claim 1, wherein the reinforcing member and the fixing member are provided on a side of the body portion facing away from the receiving chamber.

8. The box according to any one of claims 1 to 7, further comprising a buffer member, at least a portion of which is disposed between the reinforcing member and the fixing member.

9. The box according to any one of claims 1 to 7 wherein the body portion comprises a covering area, a first bending area and a second bending area, the first bending area connecting the covering area and the second bending area; the covering area is arranged to cover the accommodating cavity, the first bending area is bent relative to the covering area along the direction towards the second box body part, and the second bending area is bent relative to the first bending area along the direction back to the accommodating cavity;

the fixing piece is connected to the covering area, and the reinforcing piece is arranged between the covering area and the fixing piece; the second bending area is used for being connected with the second box body part.

10. The cabinet of claim 9, further comprising a bead disposed on a side of at least a portion of the second fold away from the second cabinet portion and coupled to the second cabinet portion.

11. The cabinet as claimed in claim 10, wherein the bead includes a connecting portion and a bending portion, the connecting portion is attached to the second bending region, and the bending portion is bent relative to the connecting portion in a direction away from the second bending region.

12. The box body of claim 11, further comprising a connecting member, wherein the connecting member connects the bead, the second bending region and the second box body portion, the connecting members are arranged at intervals along the circumferential direction of the first box body portion, and the distance between two adjacent connecting members is less than or equal to 100mm.

13. The cabinet as claimed in claim 10, wherein the bead has a first side, the second bending region has a second side, the first side is located on a side of the bead opposite to the first bending region, the second side is parallel to the first side, the first side and the second side are spaced apart, and the first side is located on a side of the second side close to the accommodating cavity.

14. A cabinet as claimed in claim 13, wherein the distance d between the first side surface and the second side surface satisfies: d is less than or equal to 5mm.

15. The cabinet as claimed in claim 9, wherein the body further includes a reinforcing rib connecting the first bending region and the second bending region.

16. A battery, comprising:

the case of any one of claims 1 to 15;

and the battery cell is accommodated in the accommodating cavity.

17. An electrical device comprising the battery of claim 16, wherein the battery is configured to provide electrical energy.

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