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 electrical device

technical field

The present application relates to the field of battery technology, in particular to a box, a battery and an electrical device.

Background technique

Batteries are widely used in electronic equipment, such as mobile phones, laptop computers, battery cars, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes and electric tools, etc.

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

Utility model content

Embodiments of the present application provide a box body, a battery, and an electrical device, which can improve the structural strength of the box body.

In the first aspect, the embodiment of the present application provides a box body, including a first box body part and a second box body part; the second box body part is mutually covered with the first box body part to form a The accommodating cavity of the body; the first box body part includes a main body part, a reinforcing part and a fixing part, the fixing part is connected with the main body part, and the reinforcing part is interposed between the main body part and the fixing part.

In the box body provided in the embodiment of the present application, the first box body part includes the main body part, the reinforcing part and the fixing part, and through the connection between the fixing part and the main body part, the reinforcing part is sandwiched between the fixing part and the main body part. The connection strength between the main body and the reinforcement is improved to ensure the strengthening effect of the reinforcement on the strength of the box body, which is conducive to improving the overall structural strength of the box body.

In some embodiments, the body part includes a convex part disposed away from the accommodating cavity, the plurality of convex parts extend along the first direction and are spaced apart along the second direction, the first direction and the second direction are perpendicular; the reinforcement part extends along the second direction extending in a direction and abut against at least part of the convex portion. It is beneficial to improve the bending strength of the main body along the first direction and the second direction, thereby improving the structural strength of the box body.

In some embodiments, the dimension of the box along the first direction is smaller than the dimension along the second direction. In this way, the processing and forming of the convex portion is facilitated, and it is beneficial to improve the bending strength of the box body along the length direction, thereby improving the structural strength of the box body.

In some embodiments, the stiffener is strip-shaped and abuts each protrusion. In this way, the structure of the reinforcement can be simplified, making the reinforcement lighter and easier to process. And setting the reinforcing piece to offset each convex portion can further enhance the strengthening effect of the reinforcing piece on the structural strength of the first box body, thereby improving the overall structural strength of the box body.

In some embodiments, the fixing member is strip-shaped and extends along a first direction, and two sides of the fixing member along the first direction are respectively connected to the main body, so that the reinforcing member is sandwiched between the main body and the fixing member. It is convenient to improve the reliability of the connection between the fixing part and the main body, so as to ensure that the fixing part clamps the reinforcing part on the main body stably.

In some embodiments, a plurality of fixing elements are arranged at intervals along the second direction. In this way, the connection stability between the reinforcing member and the main body can be further improved.

In some embodiments, the reinforcing element and the fixing element are disposed on a side of the main body away from the accommodating cavity. In this way, during the connection process between the box body and the vehicle body of the electric device, it can be connected to the vehicle body through the fixing piece, which is beneficial to improve the connection strength and connection reliability between the box body and the vehicle body.

In some embodiments, the box body further includes a buffer, and at least part of the buffer is disposed between the reinforcing member and the fixing member. In this way, the impact, vibration and other loads between the reinforcing piece and the fixing frame can be reduced, and the noise between the reinforcing piece and the fixing piece can be reduced.

In some embodiments, the body part includes a covering area, a first bending area and a second bending area, the first bending area connects the covering area and the second bending area; the covering area covers the receiving cavity, and the first bending area The area is bent in a direction toward the second box body relative to the covering area, and the second bending area is bent in a direction away from the accommodating cavity relative to the first bending area; the fixing part is connected to the covering area, and the reinforcing part is arranged on Between the covering area and the fixing part; the second bending area is used for connecting with the second box body. In this way, it is beneficial to improve the convenience and stability of the connection between the first box part and the second box part.

In some embodiments, the box body further includes a bead, and the bead is disposed on a side of at least part of the second bending area facing away from the second box body part, and is connected to the second box body part. By arranging the bead, and setting the bead on the side of at least part of the second bending area facing away from the second box part, and connecting the bead to the second box part, it is beneficial to improve the connection between the second bending area and the second box. The connection strength of the body.

In some embodiments, the bead includes a connecting portion and a bending portion, the connecting portion is attached to the second bending area, and the bending portion is bent relative to the connecting portion in a direction away from the second bending area. In this way, it is beneficial to increase the contact area between the bending portion and the first bending area, and reduce the risk of cutting the first bending area when the bead moves.

In some embodiments, the box body further includes a connecting piece that connects the bead, the second bending area, and the second box body portion, and a plurality of connecting pieces are arranged at intervals along the circumference of the first box body portion, and two adjacent The distance between the connectors is less than or equal to 100mm. In this way, it is beneficial to ensure the connection strength of the connecting piece to the bead, the second bending area and the second box body.

In some embodiments, the bead has a first side, the second bending area has a second side, the first side is located on the side of the bead facing away from the first bending area, the second side is parallel to the first side, and the first side The second side is spaced apart from the second side, and the first side is located on a side of the second side close to the accommodating cavity. In this way, it is beneficial to reduce the risk that the bead cuts other structures of the electrical device, and facilitates the installation of the bead.

In some embodiments, the distance d between the first side and the second side satisfies: d≦5mm. In this way, while reducing the risk of cutting other components by the bead, it is also beneficial to ensure the connection strength between the bead and the second bending area.

In some embodiments, the body part further includes a reinforcing rib, and the reinforcing rib connects the first bending area and the second bending area. In this way, it is beneficial to improve the structural stability of the first bending area and the second bending area, thereby improving the overall structural strength of the box body.

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

The battery provided in the embodiment of the present application has the same technical effect due to the use of the box body provided in any of the above embodiments, which will not be repeated here.

In a third aspect, an embodiment of the present application provides an electrical device, including the battery provided in the above embodiment, and the battery is used to provide electrical energy.

The electrical device provided in the embodiment of the present application uses the battery provided in the above embodiment, so it has the same technical effect and will not be repeated here.

The box body, the battery and the electrical device provided by the embodiments of the present application are provided with the first box body part including the main body part, the reinforcing part and the fixing part, and the reinforcing part is sandwiched by the fixing part through the connection between the fixing part and the main body part. Between the main body and the main body, the connection strength between the main body and the reinforcement is improved to ensure the strengthening effect of the reinforcement on the structural strength of the box, which is conducive to improving the overall structural strength of the box.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the accompanying drawings that need to be used in the embodiments of the present application. Obviously, the accompanying drawings described below are only some embodiments of the present application. Those of ordinary skill in the art can also obtain other drawings based on the accompanying drawings on the premise of not paying creative efforts.

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

Fig. 4 is a schematic diagram of the exploded structure of the battery cell in the battery provided by the embodiment of the present application;

Fig. 5 is a schematic structural view of the box body provided by the embodiment of the present application omitting the second box body part;

Fig. 6 is a partial enlarged view of place A in Fig. 5;

Fig. 7 is a partial enlarged view of place B in Fig. 5;

Fig. 8 is a structural schematic diagram of the box body used in the embodiment of the present application omitting the second box body part and the fixing member;

Fig. 9 is a schematic diagram of the exploded structure of the box body provided by the embodiment of the present application after omitting the second box body part;

FIG. 10 is a partially enlarged view at point C in FIG. 9 .

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

Mark Description:

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

10. Battery;

20. Battery module;

30. Battery cell;

31. Shell; 311. Housing; 311a, opening; 312. End cap; 32. Electrode assembly;

40, box body; 40a, accommodation cavity; 41, first box body part; 411, body part; 4111, convex part; 4112, reinforcing rib; 411a, coverage area; 411b, first bending area; Bending area; 411d, second side; 412, reinforcing member; 413, fixing member; 42, second box part; 43, buffer member; 44, bead; 44a, first side; Bending part; 45. Connector;

X, the first direction; Y, the second direction.

Detailed ways

The implementation manner of the present application will be further described in detail below with reference to the drawings and embodiments. The detailed description and drawings of the following embodiments are used to illustrate the principles of the application, but not to limit the scope of the application, that is, the application is not limited to the described embodiments.

In the description of this application, it should be noted that, unless otherwise specified, the meaning of "plurality" is more than two; the terms "upper", "lower", "left", "right", "inner", " The orientation or positional relationship indicated by "outside" and so on are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a reference to this application. Application Restrictions. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be construed as indicating or implying relative importance. "Vertical" is not strictly vertical, but within the allowable range of error. "Parallel" is not strictly parallel, but within the allowable range of error.

Reference in this application 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 present application. The occurrences of this 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 understood explicitly and implicitly by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be interpreted in a broad sense, for example, it can be a fixed connection or a flexible connection. Disassembled connection, or integral connection; it can be directly connected or indirectly connected through an intermediary. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

In this 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, etc. The embodiment of the present application does not limit this. The battery cell can be in the form of a cylinder, a flat body, a cuboid or other shapes, which is not limited in this embodiment of the present application. Battery cells are generally divided into three types according to packaging methods: cylindrical battery cells, square square battery cells and pouch battery cells, which are not limited in this embodiment of the present application.

The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in this application may include a battery module or a battery pack, and the like. Batteries generally include a case for enclosing one or more battery cells. The box can prevent liquid or other foreign objects from affecting the charging or discharging of the battery cells.

The battery cell includes an electrode assembly and an electrolyte, and the electrode assembly is composed of a positive electrode sheet, a negative electrode sheet, and a separator. A battery cell works primarily by moving metal ions between the positive and negative plates. The positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode current collector. The current collector without the positive electrode active material layer protrudes from the current collector coated with the positive electrode active material layer. The current collector coated with the positive electrode active material layer is stacked as the positive electrode tab. Taking a lithium-ion battery as an example, the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobaltate, lithium iron phosphate, ternary lithium or lithium manganate. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The current collector coated with the negative electrode active material layer is stacked as the negative electrode tab. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon or silicon. The material of the spacer can be PP (polypropylene, polypropylene) or PE (polyethylene, polyethylene). In addition, the electrode assembly may be a wound structure or a laminated structure, which is not limited in the embodiment of the present application.

After the inventor found that the battery box was prone to cracking during use, he conducted a systematic analysis and research on the structure and manufacturing process of the box, and found that the working life of the single unit of the mechanism was relatively low. Afterwards, the structure and working process of the battery cells were systematically analyzed and studied, and it was found that although reinforcements were installed on the battery box, the connection strength between the reinforcements and the main body of the box was low. , During the use of the battery, the box is subject to various vibration loads and impact loads, the connection between the reinforcement and the main body will fail, causing problems such as cracking of the main body of the box, which seriously affects the structural strength of the box.

Based on the above problems discovered by the inventor, the inventor has improved the structure of the box. The technical solution described in the embodiment of the application is applicable to the box, the battery containing the box, and the electric device using the battery.

Electric devices can be vehicles, mobile phones, portable devices, notebook computers, ships, spacecraft, electric toys and electric tools, and so on. Vehicles can be fuel vehicles, gas vehicles or new energy vehicles, and new energy vehicles can be pure electric vehicles, hybrid vehicles or extended-range vehicles; spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.; electric toys include fixed Type or mobile electric toys, such as game consoles, electric car toys, electric boat toys and electric airplane toys, etc.; electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, for example, Electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, electric planers, and more. The embodiment of the present application does not impose special limitations on the above electric equipment.

In the following embodiments, for the convenience of description, the electric device is taken as an example for description.

As shown in FIG. 1 , a battery 10 is provided inside a vehicle 1 . The battery 10 can be arranged at the bottom or the head or the rear of the vehicle 1 . The battery 10 can be used for power supply of the vehicle 1 , for example, the battery 10 can be used as an operating power source of the vehicle 1 .

The vehicle 1 may also 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 starting, navigating and driving the vehicle 1 for working power requirements.

In some embodiments of the present application, the battery 10 can not only be used as an operating power source for the vehicle 1 , but can also be used as a driving power source for the vehicle 1 to provide driving power for the vehicle 1 instead of or partially replacing fuel oil or natural gas.

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

The box body 40 is used to accommodate the battery cells, and the box body 40 may be in various structural forms. In some embodiments, the case 40 may include a first case part 41 and a second case part 42 . The first box part 41 and the second box part 42 cover each other. The first box part 41 and the second box part 42 jointly define a storage space for accommodating the battery cells. The second box part 42 can be a hollow structure with an open end, and the first box part 41 is a plate-shaped structure, and the first box part 41 covers the opening side of the second box part 42 to form a container with an accommodating space. The box body; the first box body part 41 and the second box body part 42 can also be hollow structures with one side open. The opening side of the first box part 41 covers the opening side of the second box part 42 to form a box body with a receiving space. Certainly, the first box body part 41 and the second box body part 42 can be in various shapes, such as a cylinder, a cuboid, and the like.

In order to improve the airtightness after the connection of the first box part 41 and the second box part 42, a sealing member can also be arranged between the first box part 41 and the second box part 42, such as sealant, sealing ring, etc. .

Assuming that the first box part 41 covers the second box part 42 , the first box part 41 can also be called an upper box cover, and the second box part 42 can also be called a lower box.

In the battery 10, there may be one or a plurality of battery cells. If there are multiple battery cells, the multiple battery cells can be connected in series, in parallel or in parallel. Mixed connection means that multiple battery cells are connected in series and in parallel. Multiple battery cells can be directly connected in series or parallel or mixed together, and then the whole composed of multiple battery cells can be accommodated in the box, or multiple battery cells can be connected in series, parallel or mixed to form a battery Module 20. A plurality of battery modules 20 are connected in series, in parallel or in parallel to form a whole, and accommodated in the case 40 .

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

In some embodiments, the plurality of battery cells 30 in the battery module 20 can be electrically connected through a bus component, so as to realize parallel connection, series connection or mixed connection of the plurality of battery cells 30 in the battery module 20 .

Please refer to FIG. 4 , which is a schematic exploded view of the battery cell 30 shown in FIG. 3 . The battery cell 30 provided in the embodiment of the present application includes an electrode assembly 32 and a housing 31 , the housing 31 has a housing chamber, and the electrode assembly 32 is accommodated in the housing chamber 32 a.

In some embodiments, the housing 31 may include a housing 311 and an end cover 312. The housing 311 is a hollow structure with one side open. The end cover 312 covers the opening 311a of the housing 311 and forms a sealed connection to form a In the sealed space for containing the electrode assembly 32 and the electrolyte.

When assembling the battery cell 30, the electrode assembly 32 can be put into the casing 311 first, and then the end cap 312 is covered on the opening 311a of the casing 311, and then the electrolyte is injected into the casing through the electrolyte injection port on the end cap 312. Inside the body 311.

In some embodiments, housing 31 may also be used to contain electrolyte, such as electrolytic solution. The shell 31 can be in various structural forms.

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

The housing 311 can be in various shapes, such as a cylinder, a cuboid, and the like. The shape of the casing 311 may be determined according to the specific shape of the electrode assembly 32 . For example, if the electrode assembly 32 is a cylindrical structure, the casing 311 can be selected as a cylindrical structure. If the electrode assembly 32 has a rectangular parallelepiped structure, the housing 311 may be a rectangular parallelepiped. In FIG. 4 , for example, both the casing 311 and the electrode assembly 32 are rectangular parallelepiped.

The housing 311 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, etc., which is not particularly limited in this embodiment of the present application.

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

Figure 5 shows a schematic structural view of the box body provided by the embodiment of the present application omitting the second box body part; Figure 6 and Figure 7 show the partial enlarged views of places A and B in Figure 5; Figure 8 shows A schematic diagram of the structure of the box provided by the embodiment of the present application omitting the second box part and the fixing member; Figure 9 shows a schematic diagram of the exploded structure of the box provided by the application omitting the second box part; Figure 10 shows The partial enlarged view at C in Fig. 9 is shown.

As shown in Fig. 3, Fig. 5 to Fig. 10, the box body 40 provided according to the embodiment of the present application includes a first box body part 41 and a second box body part 42, and the second box body part 42 and the first box body part 41 They are covered with each other to form an accommodating cavity 40 a for accommodating the battery cells 30 . The first box part 41 includes a body part 411 , a reinforcement part 412 and a fixing part 413 , the fixing part 413 is connected with the body part 411 , and the reinforcement part 412 is disposed between the body part 411 and the fixing part 413 .

Optionally, the first box part 41 may be an upper box cover, or the first box part 41 is a lower box.

The fixing part 413 and the main body part 411 may be screwed, welded or riveted. The first box part 41 can be set to include one fixing piece 413 , or the first box body part 41 can be set to include a plurality of fixing pieces 413 .

The reinforcing member 412 is interposed between the main body 411 and the fixing member 413 , and the reinforcing member 412 is interposed between the main body 411 and the fixing member 413 through the connection between the main body 411 and the fixing member 413 . The reinforcing member 412 can be used to strengthen the structure of the main body part 411 , and can provide the overall structural strength of the first box body part 41 by way of support.

Optionally, the body portion 411 may be plate-shaped, or the body portion 411 includes a bottom wall and side walls surrounding the bottom wall. In an embodiment where the body portion 411 includes a bottom wall and side walls surrounding the bottom wall, the reinforcing member 412 can be disposed on the bottom wall of the body portion 411 or on the side wall of the body portion 411, which is not limited here. , can be selected according to actual needs.

Optionally, the reinforcing member 412 can be in the shape of a plate, a block, a straight strip or other shapes, and it can only be sandwiched between the fixing member 413 and the body part 411, and can be detachable from the fixing member 413 and the body part ground connection. It can also be connected with the main body part 411 or with the fixing part 413 by means of bonding or the like.

Optionally, the fixing piece 413 may be in the shape of a bar, a block, or a plate, and the fixing piece 413 may be pressed on the reinforcing piece 412 and connected to the main body 411 .

Optionally, a plurality of fixing pieces 413 can be provided, arranged at intervals along the extending direction of the reinforcing piece 412, or the fixing pieces 413 can be arranged continuously along the extending direction of the reinforcing piece 412, both of which can realize the alignment between the fixing piece 413 and the reinforcing piece 412 and the main body. Enhancement of 411 connection.

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

Optionally, the battery cell 30 may be a cylindrical battery cell, or a square battery cell. During the assembly process of the battery cells 30, the battery cells 30 can be connected in series and parallel to form a battery module, and then the battery modules can be connected in series and parallel, and placed in the accommodation cavity 40a, or the battery cells 30 can be set Without forming a battery module group, the battery cells 30 are connected in series and parallel to each other and placed in the accommodation chamber 40 a of the case 40 .

It can be understood that only the first box part 41 can be provided with the reinforcing piece 412 and the fixing piece 413 , and the second box part 42 can also be provided with the reinforcing piece 412 and the fixing piece 413 .

The box body 40 provided in the embodiment of the present application, by setting the first box body part 41 to include the body part 411, the reinforcement part 412 and the fixing part 413, and through the connection between the fixing part 413 and the body part 411, the reinforcement part 412 is sandwiched between the Between the fixing part 413 and the main body part 411, the connection strength between the main body part 411 and the reinforcing part 412 is improved, and the strengthening effect of the reinforcing part 412 on the structural strength of the box body 40 is ensured, which is beneficial to improving the overall structural strength of the box body 40.

Optionally, the body part 411 may be in the shape of a flat plate, and may also have protrusions or grooves in some areas.

In some embodiments, the body portion 411 includes a convex portion 4111 disposed away from the accommodating cavity 40a, a plurality of convex portions 4111 extend along the first direction X, and are arranged at intervals along the second direction Y, the first direction X and the second direction Y vertical. The reinforcing member 412 is extended along the second direction Y and abuts against at least part of the convex portion 4111 .

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

The dimension extending along the second direction Y of the reinforcing member 412 may be the maximum dimension of the box body 40 along the second direction Y, or the reinforcing member 412 may be set along a part of the dimension extending along the second direction Y of the box body 40 along the second direction Y.

It can be understood that the body part 411 includes the convex part 4111 and the convex part 4111 extends along the first direction X, which is beneficial to improve the bending strength of the body part 411 along the first direction X. The reinforcing member 412 is arranged to extend along the second direction Y, and to abut against at least part of the convex portion 4111, which is beneficial to improve the bending strength of the main body portion 411 along the second direction Y, and ensures that the reinforcing member 412 has a strong impact on the first box portion 41. Enhancement of structural strength. Therefore, such setting can effectively improve the structural strength of the box body 40 .

Optionally, the first direction X can be set as the length direction of the box body 40, the second direction Y can be set as the width direction of the box body 40, or the first direction X can be set as the width direction of the box body 40, and the second direction Y can be set is the length direction of the box body 40 .

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

In this way, the first direction X is the width direction of the case 40 , and the second direction Y is the length direction of the case 40 . That is, the protrusions 4111 extend along the width direction of the box body 40 and are arranged at intervals along the length direction of the box body 40 . The reinforcing member 412 extends along the length direction of the box body 40 .

It can be understood that the protruding portion 4111 is provided to extend along the width direction of the box body 40 , so that the protruding portion 4111 can be formed by stamping and other processes. The protrusions 4111 extend along the width direction, are arranged at intervals along the length direction, and the reinforcements 412 extend along the length direction, which is beneficial to improve the bending strength of the box body 40 along the length direction, and further improve the structural strength of the box body 40 .

In some embodiments, the reinforcing member 412 is in the shape of a strip, and is opposed to each convex portion 4111 .

Optionally, the reinforcing member 412 may be in the shape of a plate-shaped strip, or may be in the shape of a column-shaped strip. Setting the reinforcing member 412 in a strip shape can simplify the structure of the reinforcing member 412, making the reinforcing member 412 light in weight and easy to process. And setting the reinforcing piece 412 to offset each convex portion 4111 can further enhance the reinforcing effect of the reinforcing piece 412 on the structural strength of the first box body portion 41 , thereby improving the overall structural strength of the box body 40 .

In some embodiments, the fixing piece 413 is strip-shaped and extends along the first direction X, and the two sides of the fixing piece 413 along the first direction X are connected to the main body 411 respectively, so that the reinforcing piece 412 is clamped on the main body 411 and the fixing piece 413.

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

In some embodiments, a plurality of fixing pieces 413 are arranged at intervals along the second direction Y.

Therefore, there are multiple fixing pieces 413, and the multiple fixing pieces 413 are arranged at intervals along the second direction Y, so as to clamp the reinforcing piece 412 on the main body portion 411, so that the connection stability between the reinforcing piece 412 and the main body portion 411 is further improved. performance, thereby improving the structural strength of the box body 40.

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

That is, the reinforcing member 412 and the fixing member 413 are arranged outside the box body 40. In this way, in the process of connecting the box body 40 with the vehicle body of the electrical device, it can be connected to the vehicle body through the fixing piece 413, which is beneficial to improve the box body. The connection strength and connection reliability between the body 40 and the vehicle body.

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

Optionally, the buffer member 43 may be foam, sponge and other materials with a certain buffering and shock-absorbing function.

It can be set that all the buffering parts 43 are located between the reinforcing part 412 and the fixing part 413, and it is also possible to set a part of the buffering part 43 to be located between the reinforcing part 412 and the fixing part 413, while the other part is located in other positions, such as being bonded to the box 40 is also provided with a cushioning part 43 at the part vulnerable to impact, or between the reinforcing part 412 and the main body part 411 .

Therefore, the buffer member 43 has the functions of shock absorption and noise reduction. At least part of the buffer member 43 is arranged between the reinforcement member 412 and the fixing member 413. When the box body 40 is subjected to loads such as vibration and impact, the buffer member 43 can absorb part of the load. , so as to reduce the impact, vibration and other loads between the reinforcing member 412 and the fixing frame, and reduce the noise between the reinforcing member 412 and the fixing member 413 .

In some embodiments, the body portion 411 includes a covering area 411a, a first bending area 411b and a second bending area 411c, and the first bending area 411b connects the covering area 411a and the second bending area 411c. The covering area 411a is arranged to cover the accommodating cavity 40a, the first bending area 411b is bent relative to the covering area 411a in a direction toward the second box part 42, and the second bending area 411c is bent in a direction opposite to the first bending area 411b. The direction of the accommodating chamber 40a is bent. The fixing part 413 is connected to the covering area 411 a, the reinforcing part 412 is disposed between the covering area 411 a and the fixing part 413 , and the second bending area 411 c is used for connecting with the second box part 42 .

The covering area 411a is arranged to cover the accommodating cavity 40a, the first bending area 411b is bent relative to the covering area 411a, and the second bending area 411c is bent relative to the first bending area 411b, and passes through the second bending area 411c and The second case portion 42 is connected. The structure of the second bending area 411c is similar to the flange edge, and the connection with the second box body part 42 is realized through the second bending area 411c, which is conducive to improving the connection between the first box body part 41 and the second box body part 42. Convenience and stability.

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

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

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

Optionally, the bead 44, the second bending area 411c and the second box body 42 may be connected by means of screw connection, riveting, welding and the like. Exemplarily, bolts or screws may sequentially pass through the bead 44 , the second bending area 411 c and part of the second box part 42 and securely connect them.

By arranging the bead 44, and setting the bead 44 to be arranged on at least part of the second bending area 411c on the side facing away from the second box part 42, and connecting the bead 44 to the second box part 42, it is beneficial to improve the second folding. The connection strength between the bent area 411c and the second box part 42 .

Optionally, the bead 44 may be flat, round, or L-shaped.

In some embodiments, the bead 44 includes a connecting portion 441 and a bending portion 442, the connecting portion 441 is bonded to the second bending area 411c, and the bending portion 442 is connected to the second bending area 411c in a direction away from the second bending area 411c. Bend settings.

Specifically, the bead 44 is connected to the second bending area 411 c and the second box part 42 through the connecting part 441 . The bending part 442 is bent and arranged in a direction away from the second bending area 411c relative to the connecting part 441, and the bending part 442 extends in a direction parallel to the first bending area 411b, which is conducive to improving the height of the bending part 442. The contact area with the first bending area 411b reduces the risk of the bead 44 cutting the first bending area 411b during the movement.

In some embodiments, the box body 40 further includes a connecting piece 45, the connecting piece 45 connects the bead 44, the second bending area 411c and the second box body portion 42, and the plurality of connecting pieces 45 are along the periphery of the first box body portion 41 They are arranged at intervals, and the distance between two adjacent connecting pieces 45 is less than or equal to 100mm.

Exemplarily, the distance between two adjacent connecting pieces 45 may be 100mm, 80mm, 70mm, 60mm, 50mm or 40mm.

Optionally, the connecting member 45 may be a screw, a bolt nut, a rivet or a pin, and the like. Setting a plurality of connecting pieces 45 at intervals along the circumferential direction of the first direction X, and setting the distance between two adjacent connecting pieces 45 to be less than or equal to 100mm is beneficial to ensure that the connecting piece 45 is opposite to the bead 44, the second bending area 411c and the second bending area 411c. The connection strength of the two box parts 42.

Optionally, the bead 44 may protrude from the second bending area 411c, or be flush with the second bending area 411c, which is not limited here.

In some optional embodiments, the bead 44 has a first side 44a, the second bending area 411c has a second side 411d, the first side 44a is located on the side of the bead 44 facing away from the first bending area 411b, and the second The 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 close to the accommodating cavity 40a.

That is, the bead 44 is set without protruding from the edge of the second bending area 411c, which helps to reduce the risk of the bead 44 cutting other structures of the electrical device and facilitates the installation of the bead 44.

In some embodiments, the distance d between the first side 44a and the second side 411d satisfies: d≦5mm.

Optionally, d may be 5mm, 4mm, 3mm, 2mm or 1mm and so on.

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

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

Optionally, the reinforcing rib 4112 may be in the shape of a triangle, and two adjacent sides of the triangle are respectively connected to the first bending area 411b and the second bending area 411c.

Setting reinforcing ribs 4112, and setting reinforcing ribs 4112 to connect the first bending area 411b and the second bending area 411c is beneficial to improving the structural stability of the first bending area 411b and the second bending area 411c, thereby improving the box body 40 overall structural strength.

The battery 10 provided according to the embodiment of the present application includes the box body 40 provided in any of the above embodiments and the battery cell 30, and the battery cell 30 is accommodated in the accommodation cavity 40a. The battery 10 provided in the embodiment of the present application has the same technical effect due to the use of the casing 40 provided in any one of the above embodiments, which will not be repeated here.

The electric device provided according to the embodiment of the present application includes the battery 10 provided in the above embodiment, and the battery 10 is used to provide electric energy.

The electric device provided according to the embodiment of the present application uses the battery 10 provided in the embodiment of the present application, so it has the same technical effect, and will not be repeated here.

While the present application has been described with reference to a preferred embodiment, various modifications may be made thereto and equivalents may be substituted for parts thereof without departing from the scope of the present application, in particular, as long as there are no structural conflicts , the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the 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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