CN217134473U - Battery box, battery and power consumption device - Google Patents

Abstract

The application relates to a box body of a battery, the battery and an electric device. The box body comprises a box body and a drying component, the box body comprises a connecting component, the connecting component comprises a side wall which is enclosed to form a first accommodating cavity, and the first accommodating cavity is used for accommodating the single batteries; the connecting member further comprises a cavity with a first opening, the first opening is arranged towards the first accommodating cavity, and the cavity is at least arranged in the side wall; at least part of the drying member is disposed in the cavity, and the drying member is used for drying the first accommodating cavity. The dry component of this application embodiment can dry first chamber of holding to improve battery inner structure's aridity, thereby reduce the safety risk of battery. In addition, at least part of the drying component is embedded in the connecting component, so that the space of the first accommodating cavity can be reduced, and the accommodating space of the internal structure of the battery can be increased.

Description

Battery box, battery and power consumption device

Technical Field

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

Background

The battery is widely applied to various electric devices, such as mobile phones, notebook computers, battery cars, electric automobiles, electric airplanes, electric steamships, electric toy automobiles, electric toy steamships, electric toy airplanes, electric tools and the like. A battery generally includes a battery cell and a case that houses the battery cell.

In addition to improving the performance of batteries, safety issues are also a considerable problem in the development of battery technology. In order to improve the safety of the battery, it is necessary to ensure that the internal structure of the battery is in a good working environment. When the internal structure of the battery is in a humidity environment, the battery is easily short-circuited, thereby causing a safety risk.

SUMMERY OF THE UTILITY MODEL

The application provides a box, battery and power consumption device of battery aims at improving the aridity of battery inner structure, reduces the probability because of the battery short circuit that humid environment arouses to reduce the safety risk of battery.

In a first aspect, the application provides a battery box, which includes a box body and a drying member, wherein the box body includes a connecting member, the connecting member includes a side wall enclosing to form a first accommodating cavity, and the first accommodating cavity is used for accommodating a battery monomer; the connecting member further comprises a cavity with a first opening, the first opening is arranged towards the first accommodating cavity, and the cavity is at least arranged in the side wall; at least part of the drying member is disposed in the cavity, and the drying member is used for drying the first accommodating cavity.

Therefore, the box of this application embodiment includes dry component, and dry component can dry first holding chamber, improves the aridity of battery inner structure. And, the dry component is partly set in the connecting component, can reduce the encroachment to first holding chamber accommodation space.

In any embodiment, the connecting member includes a bottom wall connected to the side wall, and the side wall is disposed around the bottom wall, the cavity being disposed within the bottom wall and the side wall.

From this, the dry component's of this application embodiment set up the position and can follow the first free mode of setting of holding in the chamber and decide, set up and all can dry first chamber of holding in diapire and lateral wall.

In any embodiment, the cabinet body further includes a reinforcing member disposed in the first receiving cavity, the reinforcing member being connected to the connecting member, at least a portion of the drying member being disposed in the reinforcing member.

Therefore, the reinforcing member of the embodiment of the application can enhance the structural strength of the box body, the drying member is arranged in the reinforcing member in the first accommodating cavity, the drying member is arranged close to the central area of the first accommodating cavity, and the drying effect on the first accommodating cavity can be enhanced.

In any embodiment, the connecting member includes a connecting body and a recess that is recessed relative to the connecting body toward a direction away from the first receiving cavity, at least a portion of the drying member being disposed within the recess.

Therefore, at least part of the drying component is arranged in the concave part, the space encroachment on the first accommodating cavity can be reduced, and the connecting component still has high structural strength.

In any embodiment, a pressure relief member is disposed within the case, and the drying member is disposed adjacent to the pressure relief member.

Therefore, the drying component is arranged close to the pressure relief component, and the drying component can have a good adsorption effect on moisture existing near the pressure relief component.

In any embodiment, the drying member is provided in plurality.

Therefore, when the drying component of the embodiment of the application is a plurality of drying components, the drying effect on the first accommodating cavity can be enhanced.

In any embodiment, the drying member is removably coupled to the coupling member.

Therefore, the drying component of the embodiment of the application can be detached from the connecting component, and the drying component is convenient to replace so as to maintain the drying capacity of the drying component.

In any embodiment, the drying component comprises a drying agent and a shell, the shell comprises a second accommodating cavity for accommodating the drying agent, the shell is embedded in the connecting component, and the part of the shell facing the first accommodating cavity is of a breathable structure.

Therefore, the drying component comprises the shell and the drying agent, and the drying agent is arranged in the shell and can be well protected. The casing inlays and locates in the connecting elements, can reduce the encroachment of taking up first accommodation cavity space.

In any embodiment, a portion of the housing facing the first accommodation chamber has a through hole communicating the second accommodation chamber and the first accommodation chamber.

Therefore, the part of the shell facing the first accommodating cavity is provided with the through hole, so that the drying agent can be communicated with the first accommodating cavity, and the first accommodating cavity is dried.

In any embodiment, a portion of the housing facing the first accommodating chamber is made of a breathable material.

Therefore, the part of the shell facing the first accommodating cavity is made of the breathable material, and the part of the shell facing the first accommodating cavity can have uniform breathability, so that the drying effect on the first accommodating cavity is enhanced; and the casing of ventilative material can reduce the risk that the material in the dry component got into first chamber of holding to can protect battery monomer.

In any embodiment, the housing includes a first portion and a second portion connected to the first portion, the first portion includes a second receiving cavity having a second opening, at least a portion of the first portion is disposed within the connecting member, the second portion covers the second opening, and the second portion is a gas permeable structure. Wherein at least one of the first portion and the second portion is connected with the connecting member.

Therefore, the shell comprises the first portion and the second portion, at least part of the first portion is arranged in the connecting component, and the space of the first accommodating cavity can be reduced from being occupied. The second portion is ventilative structure, can make the drier and the first chamber intercommunication that holds to hold the chamber to dry to first.

In any embodiment, the first portion is removably connected to the second portion.

Therefore, the first portion and the second portion of the embodiment of the application are detachably connected, and the drying agent can be replaced conveniently.

In any embodiment, the first portion is connected to the second portion, and the second portion is reversible with respect to the first portion.

Therefore, the shell provided by the embodiment of the application can realize the replacement of the drying agent under the condition that the first part and the second part are not detached, and the convenience of replacing the drying agent is improved.

In any embodiment, the first portion comprises a body portion comprising a second receiving cavity having a second opening, at least part of the body portion being disposed within the connecting member, and an extension portion extending in a direction away from the second receiving cavity, the extension portion connecting the second portion and the connecting member.

Therefore, at least part of the body part of the embodiment of the application is arranged in the connecting component, and the space of the first accommodating cavity can be reduced. The first portion further comprises an extension portion, the extension portion is connected with the second portion and the connecting member, the connecting strength between the first portion and the second portion can be improved, and the connecting strength between the first portion and the connecting member can also be improved.

In a second aspect, the present application provides a battery comprising a case as in any of the embodiments of the first aspect of the present application.

In a third aspect, the present application provides an electric device comprising a battery as in the second aspect of the present application. The battery is used for providing electric energy.

Drawings

Features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

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

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

fig. 3 is a schematic structural view of a battery module according to some embodiments of the present disclosure;

fig. 4 is an exploded schematic view of a battery cell provided in some embodiments of the present application;

fig. 5 is a partial structural schematic view of a case of a battery according to some embodiments of the present application;

FIG. 6 is a schematic view of a partial structure of a case of the battery of FIG. 5;

FIG. 7 is a partial schematic view of the cabinet of FIG. 6 with a drying element mounted thereon;

FIG. 8 is a schematic structural view of a drying component provided in some embodiments of the present application;

fig. 9 is another schematic structural view of a drying component provided in some embodiments of the present application.

The drawings are not necessarily to scale.

Description of reference numerals:

1. a battery cell;

10. an electrode assembly;

20. a housing assembly; 21. a shell portion; 210. an accommodating portion;

22. an end cap assembly; 221. An end cap; 222. an electrode terminal;

2. a battery module; 3. a battery;

30. a box body; 3a, a top cover; 3b, a box body;

31. a connecting member; 310. a side wall; 311. a first opening; 312. a cavity; 313. a connecting body; 314. a recessed portion;

32. a first accommodating chamber;

33. a reinforcing member;

40. a drying member; 41. a housing; 410. a second accommodating chamber;

411. a first part; 411a, a second opening; 411b, a body portion; 411c, an extension;

412. a second section;

413. a through hole;

4. a vehicle; 4a, a controller; 4b, a motor.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different elements and not for describing a particular sequential or chronological order.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment 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.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "attached" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The term "and/or" in this application is only one kind of association relationship describing the associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this application generally indicates that the former and latter related objects are in an "or" relationship.

In the embodiments of the present application, like reference numerals denote like parts, and a detailed description of the same parts is omitted in different embodiments for the sake of brevity. It should be understood that the thickness, length, width and other dimensions of the various components in the embodiments of the present application and the overall thickness, length, width and other dimensions of the integrated device shown in the drawings are only exemplary and should not constitute any limitation to the present application.

The appearances of "a plurality" in this application are intended to mean more than two (including two).

In the present application, the battery cell may include a lithium ion secondary battery, a lithium ion primary battery, a lithium sulfur battery, a sodium lithium ion battery, a sodium ion battery, a magnesium ion battery, or the like, which is not limited in the embodiments of the present application. 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 development of battery technology needs to consider various factors, such as improvement of battery performance, for example, energy density, cycle life, discharge capacity, charge and discharge rate, and safety of the battery. The safety of the battery is associated with various factors, in which the operating environment of the internal structure of the battery has an important influence on the safety of the battery.

The inventors have found that when the internal structure of the battery is in a humid environment, the risk of short circuit of the battery is greatly increased, and the short circuit not only causes battery failure, but also brings a severe safety risk. Therefore, improving the dryness of the internal structure of the battery can not only reduce the safety risk of the battery, but also reduce the failure rate of the battery.

In view of the above problems, the inventors have made extensive studies and have proposed a battery case. Be provided with dry component on the box, dry component can carry out the drying to the chamber that holds of box, improves the aridity that holds the chamber, when the box was applied to the battery, can improve battery inner structure's aridity, reduces the safe risk and the fault rate of battery.

The technical scheme described in the embodiment of the application is suitable for the battery comprising 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 extending vehicle and the like; spacecraft include aircraft, rockets, space shuttles, and spacecraft, among others; 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 specifically limit the above power utilization device.

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

Fig. 1 is a schematic structural diagram of a vehicle according to some embodiments of the present application.

Referring to fig. 1, a battery 3 is disposed inside a vehicle 4, and the battery 3 may be disposed at the bottom or the head or the tail of the vehicle 4. The battery 3 may be used for power supply of the vehicle 4, for example, the battery 3 may serve as an operation power source of the vehicle 4.

The vehicle 4 may also include a controller 4a and a motor 4b, the controller 4a being configured to control the battery 3 to power the motor 4b, e.g., for start-up, navigation, and operational power requirements while traveling of the vehicle 4.

In some embodiments, the battery 3 may not only serve as an operating power source for the vehicle 4, but also as a driving power source for the vehicle 4, instead of or in part replacing fuel or natural gas to provide driving power for the vehicle 4.

Fig. 2 is an exploded schematic view of a battery provided in some embodiments of the present application; fig. 3 is a schematic structural diagram of a battery module according to some embodiments of the present disclosure.

Referring to fig. 2 and 3, the battery 3 may include a case 30 for accommodating the battery cell 1, the case 30 having a first accommodating cavity 32, and the first accommodating cavity 32 being used for accommodating the battery cell 1.

In the battery 3, there may be one or a plurality of battery cells 1. If there are a plurality of battery cells 1, the plurality of battery cells 1 may be connected in series, in parallel, or in series-parallel. The series-parallel connection means that a plurality of battery cells 1 are connected in series or in parallel. The plurality of battery cells 1 may be directly connected in series or in parallel or in series-parallel, and the whole body formed by the plurality of battery cells 1 is accommodated in the case 30. A plurality of battery cells 1 may be connected in series or in parallel or in series-parallel to form a battery module 2, one or more battery modules 2 may be provided, and one or more battery modules 2 are accommodated in the case 30. In the case of a plurality of battery modules 2, the plurality of battery modules 2 may be connected in series, in parallel, or in series-parallel to form a whole and accommodated in the case 30.

Illustratively, in fig. 2 and 3, the battery cell 1 in the battery 3 is plural. The plurality of battery cells 1 are connected in series or in parallel or in series-parallel to form the battery module 2, and the plurality of battery modules 2 are connected in series or in parallel or in series-parallel to form a whole and are accommodated in the case 30.

In some embodiments, the plurality of battery cells 1 in the battery module 2 may be electrically connected to each other through a bus member, so as to realize parallel connection, series connection or parallel connection of the plurality of battery cells 1 in the battery module 2.

In some embodiments, the case 30 may include a case body 3b and a top cover 3 a. The tank body 3b and the top cover 3a are connected. The case body 3b includes a first accommodation chamber 32 for accommodating the battery cell 1. The top cover 3a may be a hollow structure with an opening at one side, or a flat structure, and may be arranged according to actual structural requirements. In the case where the top cover 3a has a hollow structure with one side open, the open side of the top cover 3a is connected to one end of the tank body 3 b.

The case body 3b may include a connecting member 31 and a first receiving cavity 32 enclosed by the connecting member 31, and the first receiving cavity 32 may be used to receive the battery cell 1. The connecting member 31 includes a bottom wall and a side wall 310 disposed around the bottom wall, the side wall 310 enclosing to form the first receiving chamber 32.

In practical applications, the bottom wall of the connecting member 31 and the side wall 310 may be integrally formed, and of course, the bottom wall of the connecting member 31 may also be a member independent from the side wall 310. Illustratively, in fig. 2, the bottom wall and the side wall 310 of the connecting member 31 are two members independent of each other.

The tank body 3b and the top cover 3a may be in various shapes, for example, a cylindrical body, a rectangular parallelepiped, or the like. In fig. 2, the tank body 3b and the top cover 3a are each exemplarily a rectangular parallelepiped structure.

Fig. 4 is an exploded schematic view of a battery cell provided in some embodiments of the present application.

As shown in fig. 4, the battery cell 1 provided in the embodiment of the present application includes an electrode assembly 10 and a case assembly 20, and the electrode assembly 10 is accommodated in the case assembly 20.

In some embodiments, the housing assembly 20 may also be used to contain an electrolyte, such as an electrolyte. The housing assembly 20 may take a variety of configurations.

In some embodiments, the case assembly 20 may include a case part 21 and an end cap assembly 22, the case part 21 being a hollow structure with one side open, and the end cap assembly 22 covering the opening of the case part 21 and forming a sealing connection to form a receiving part 210 for receiving the electrode assembly 10 and an electrolyte.

The shell portion 21 may be various shapes, such as a cylinder, a rectangular parallelepiped, or the like. The shape of the case portion 21 may be determined according to the specific shape of the electrode assembly 10. For example, if the electrode assembly 10 is a cylindrical structure, it may be optionally a cylindrical case; if the electrode assembly 10 has a rectangular parallelepiped structure, a rectangular parallelepiped case may be used.

In some embodiments, the end cap assembly 22 includes an end cap 221, and the end cap 221 covers the opening of the shell portion 21. The end cap 221 may have various structures, for example, the end cap 221 may have a plate-shaped structure, a hollow structure with one end open, and the like. Illustratively, in fig. 4, the shell 21 has a rectangular parallelepiped structure, the end cap 221 has a plate-like structure, and the end cap 221 covers an opening at the top of the shell 21.

The end cap 221 may be made of an insulating material (e.g., plastic) or a conductive material (e.g., metal). When the end cap 221 is made of a metal material, the end cap assembly 22 may further include an insulating member at a side of the end cap 221 facing the electrode assembly 10 to insulate and separate the end cap 221 from the electrode assembly 10.

In some embodiments, the end cap assembly 22 may further include an electrode terminal 222, the electrode terminal 222 being mounted on the end cap 221. The two electrode terminals 222 are defined as a positive electrode terminal and a negative electrode terminal, respectively, each of the two electrode terminals 222 being adapted to be electrically connected to the electrode assembly 10 to output electric power generated from the electrode assembly 10.

In other embodiments, the case assembly 20 may have other structures, for example, the case assembly 20 includes a casing portion 21 and two end cap assemblies 22, the casing portion 21 is a hollow structure with two opposite open sides, and one end cap assembly 22 is correspondingly covered at one opening of the casing portion 21 and forms a sealing connection to form a receiving portion 210 for receiving the electrode assembly 10 and the electrolyte. In such a structure, two electrode terminals 222 may be provided on one end cap assembly 22, while the other end cap assembly 22 is not provided with the electrode terminals 222, or one electrode terminal 222 may be provided on each of the two end cap assemblies 22.

In the battery cell 1, one or more electrode assemblies 10 may be accommodated in the case assembly 20. Illustratively, in fig. 4, there are four electrode assemblies 10.

Fig. 5 is a partial structural schematic diagram of a case of a battery according to some embodiments of the present application.

Referring to fig. 5, in some embodiments, the case includes a case body 3b and a drying member 40, the case body 3b including a connecting member 31; the connecting member 31 includes a sidewall 310 enclosing a first receiving cavity 32, the first receiving cavity 32 is used for receiving a battery cell, at least a portion of the drying member 40 is embedded in the connecting member 31, and the drying member 40 is used for drying the first receiving cavity 32.

The connecting member 31 may have various shapes such as a rectangular parallelepiped, a square, a cylinder, etc. as a basic structure of the box body 3b, and may also have a combination of various shapes such as a rectangular parallelepiped and a semi-cylinder in one part of the connecting member 31.

Meanwhile, the connection member 31 serves as a main body of the case, and should have good structural strength and a certain bearing capacity against external impact to effectively protect the internal battery cells. The connecting member 31 may be made of a common material, such as steel, carbon fiber, aluminum alloy, etc., and when some conductive material is selected as the material for making the connecting member 31, the surface of the connecting member 31 should be coated with an insulating material to provide good insulation.

The first accommodating cavity 32 is formed by enclosing the side wall 310 of the connecting member 31, the first accommodating cavity 32 is used for accommodating the single battery, and the cavity shape of the first accommodating cavity 32 can be comprehensively considered according to various factors such as the shape, the number and the arrangement mode of the single battery.

The drying member 40 may be some substance having a drying function, which may be a chemical drying agent such as calcium sulfate, calcium chloride, etc., and dries by combining with water to form hydrate; physical drying agents such as silica gel and activated alumina, etc. may also be used, and drying may be carried out by physically adsorbing water.

The drying member 40 may also be some device having a drying function, and absorbs moisture in the first accommodating chamber 32 by the operation of the device to dry the first accommodating chamber 32.

The drying member 40 may be an air-permeable structure in which a dry substance is packed, and the dry substance in the air-permeable structure adsorbs moisture.

At least a portion of the drying member 40 is embedded in the connecting member 31, i.e., the drying member 40 may be entirely embedded in the connecting member 31; or a part of the connecting member 31 may be embedded in the connecting member 31 and another part of the connecting member 31 may protrude from the connecting member.

The drying member 40 may have various shapes such as a rectangular parallelepiped, a cylinder, etc.

The box includes dry component 40, and dry component 40 carries out the drying to first chamber 32 that holds, can make the inside comparatively dry environment that is in of box, and when the box was applied to the battery, the inner structure that can reduce the battery was because of being in the short circuit risk that the humidity environment leads to improve the security of battery, and reduced the fault rate of battery.

In addition, at least part of the drying member 40 is embedded in the connecting member 31, the connecting member 31 serves as a structural basis of the case body, and the drying member 40 is embedded therein, so that the space occupied by the drying member 40 can be reduced, when the case body is applied to a battery, the overall volume of the battery can be reduced, and the encroachment on the battery cell accommodating space can be reduced.

With continued reference to fig. 5, in some embodiments, the connecting member 31 includes a bottom wall (not shown) and a side wall 310, wherein the side wall 310 defines the first accommodating chamber 32, and at least a portion of the drying member 40 is disposed in at least one of the bottom wall and the side wall 310, that is, the drying member 40 may be disposed in the bottom wall, the side wall 310, or both the bottom wall and the side wall 310.

When the box is applied to the battery, the concrete setting position of drying component 40 can be decided according to the setting mode of the battery monomer, for example, the battery monomer has a smaller distance with side wall 310 and has a larger distance with the bottom wall, then drying component 40 can be arranged in the bottom wall, not only the risk of interference with the battery monomer can be reduced, but also the setting space of drying component 40 is more spacious, the air circulation near the setting space is stronger, the adsorption effect of drying component 40 to moisture is better, and the drying effect to first accommodation cavity 32 is better.

In some embodiments, the cavity 312 is disposed at least within the sidewall 310, i.e., the drying member 40 is disposed at least within the cavity 312 of the sidewall 310. In other embodiments, the connecting member 31 further includes a bottom wall (not shown), the bottom wall is connected to the side wall 310, the side wall 310 is disposed around the bottom wall, the cavity 312 is disposed in the bottom wall and the side wall 310, that is, the drying member 40 is disposed in the cavity 312 of the side wall 310, and the drying member 40 is disposed in the cavity 312 of the bottom wall.

The side wall 310 is disposed around the first accommodating cavity 32, and at least a portion of the drying member 40 is disposed in the side wall 310, so that the influence of the drying member 40 on the placement of the battery cells in the first accommodating cavity 32 can be reduced, and the shielding effect of the battery cells on the drying member 40 can also be reduced, thereby enhancing the drying effect of the drying member 40.

With continued reference to fig. 5, in some embodiments, the box body 3b further includes a reinforcing member 33 disposed in the first accommodating chamber 32, the reinforcing member 33 is connected to the connecting member 31, and at least a portion of the drying member 40 is disposed in the reinforcing member 33.

The reinforcing member 33 is connected to the connecting member 31, and the reinforcing member 33 may have various structures, for example, may be composed of a plurality of cross beams parallel to each other, or a plurality of longitudinal beams parallel to each other, or may be a cross-shaped structure formed by intersecting the cross beams and the longitudinal beams.

The material of the reinforcing member 33 may be the same as or different from that of the connecting member 31. The reinforcing member 33 may be integrally formed with the connecting member 31, or may be formed separately and then connected. Alternatively, the reinforcing member 33 and the connecting member 31 are made of the same material and are integrally formed, and the integrally formed reinforcing member 33 and the connecting member 31 have high structural strength and structural stability, so that the structural strength and structural stability of the box body can be improved.

The case body 3b is provided with a reinforcing member 33, which can enhance the structural strength of the case body 3 b. At least part of the drying member 40 is arranged in the reinforcing member 33, so that the drying member 40 can be closer to the central area of the first accommodating cavity 32, the contact range of the drying member 40 and the first accommodating cavity 32 is wider, and the drying effect of the drying member 40 on the first accommodating cavity 32 can be enhanced.

Fig. 6 is a partial structural view of a case of the battery of fig. 5.

Referring to fig. 5 and 6, in some embodiments, the connection member 31 includes a cavity 312 having a first opening 311, the first opening 311 is disposed toward the first receiving cavity 32, and at least a portion of the drying member 40 is disposed in the cavity 312. The cavity 312 may not be in communication with the external environment.

The first opening 311 may be an opening with various shapes, such as a rectangle, a circle, an ellipse, a square, etc., and the shape of the first opening 311 may be set according to the shape of the drying member 40, such as the drying member 40 is a rectangular parallelepiped member, and the first opening 311 is a rectangular opening, which has the advantages of good matching property, simple installation and high installation efficiency.

The cavity 312 may be a cavity of various shapes, such as a cylindrical cavity, a rectangular parallelepiped cavity, etc., and the size of the cavity 312 may be determined according to the material of the connecting member 31, for example, the material of the connecting member 31 itself has high strength and strong impact resistance, so that the cavity 312 may have a larger size appropriately, thereby reducing the weight of the connecting member 31 and the weight of the box body.

At least part of the drying member 40 is disposed in the cavity 312, that is, the drying member 40 may be completely located in the cavity 312, in which case, the space occupied by the drying member 40 to the first accommodating cavity 32 can be reduced, and when the case is applied to a battery, the interference of the drying member 40 to the battery cell can be reduced, and the accommodating space of the battery cell can be increased.

The drying member 40 may also be partially located in the cavity 312 and partially extend out of the cavity 312, and at this time, the contact area between the drying member 40 and the first accommodating cavity 32 is increased, so that the drying effect of the drying member 40 on the first accommodating cavity 32 can be improved.

In other embodiments, the connecting member 31 comprises a connecting body 313 and a recess 314, the recess 314 being recessed with respect to the connecting body 313 towards a direction away from the first receiving cavity 32, at least part of the drying member 40 being arranged within the recess 314.

The depressed part 314 can have multiple shapes, such as cuboid structure, cylinder structure, cone structure etc. the shape of depressed part 314 can set up according to the shape of drying component 40, for example drying component 40 is the cuboid component, and depressed part 314 also is the cuboid, and the advantage of this kind of setting form lies in, and the two has good cooperation nature, and drying component 40's installation is simpler, and the installation effectiveness is high.

At least part of the drying member 40 is disposed in the recess 314, that is, the drying member 40 may be completely disposed in the recess 314, which can reduce the space occupied by the drying member 40 on the first accommodating cavity 32, reduce interference on the battery cells when the case is applied to the battery, and increase the accommodating space of the battery cells.

The drying component 40 may also be partially located in the recess 314 and partially protrude out of the recess 314, and at this time, the contact area between the drying component 40 and the first accommodating cavity 32 is increased, so that the drying effect of the drying component 40 on the first accommodating cavity 32 can be improved.

The recess 314 is provided in the connecting member 31, and at least a part of the drying member 40 is provided in the recess 314, so that the space of the drying member 40 in the first accommodating chamber 32 can be reduced. The drying member 40 is disposed in the recess 314, and thus, the influence on the connecting member 31 can be reduced, and the loss of the structural strength of the connecting member 31 can be reduced.

In some embodiments, a pressure relief member is disposed within the case, and the drying member 40 is disposed adjacent to the pressure relief member.

The pressure relief component arranged in the box body can reduce the pressure difference between the inside and the outside of the box body, so that the pressure caused by the pressure difference between the inside and the outside of the box body is reduced. When the box is applied to the battery, the internal structure of the battery can release partial gas and remain in the box in the operation process, so that the internal pressure of the battery is greater than the atmospheric pressure, and the box is subjected to expansive force, thereby causing safety risk to the battery. Set up the pressure release component and can reduce the inside pressure of battery, the inside and outside differential pressure of balanced battery alleviates the safety risk because of the expansive force causes.

The pressure relief member may have various forms, such as a balance valve, a relief valve, an explosion-proof valve, etc., and the number of the pressure relief members may be set to one or more.

When the pressure relief member works, external humid air may be introduced due to the exchange of air inside and outside the box body and gathered around the pressure relief member, and the drying member 40 is arranged close to the pressure relief member, so that the surrounding space of the pressure relief member can be well dried, and the drying effect on the first accommodating cavity 32 is enhanced.

In some embodiments, the drying member 40 is provided in plurality.

The drying member 40 is provided in plurality, and the drying member 40 may have various arrangements.

In some examples, a plurality of drying members 40 may be dispersedly disposed on the connection member 31, and the drying members 40 may dry the first receiving cavity 32 from a plurality of directions, thereby improving drying uniformity of the first receiving cavity 32 and thus improving drying effect of the first receiving cavity 32.

In other examples, the plurality of drying members 40 may be collectively disposed at a portion of the connection member 31, which may be close to a position where the humidity in the first receiving chamber 32 is high, so as to improve the drying performance thereof, thereby improving the drying performance of the first receiving chamber 32.

In some embodiments, the drying member 40 is detachably connected with the connection member 31.

The drying member 40 and the connecting member 31 have various connection forms, such as a hinge connection, a snap connection, a screw connection, etc., the drying member 40 and the connecting member 31 are detachably connected, so that the drying member 40 can be conveniently detached and replaced, and when the case is applied to a battery, the drying member 40 can be detached and replaced at the same time when the battery is subjected to routine disassembly inspection, so that the drying capability of the drying member 40 is maintained, and the drying effect on the first accommodating cavity 32 is improved.

Of course, the drying member 40 may also be fixedly connected with the connecting member 31, and the fixed connection enables high connection strength and connection stability between the drying member 40 and the connecting member 31.

FIG. 7 is a partial schematic view of the cabinet of FIG. 6 with a drying element mounted thereon; fig. 8 is a schematic structural view of a drying component according to some embodiments of the present disclosure.

Referring to fig. 5 to 8, in some embodiments, the drying component 40 includes a drying agent (not shown) and a housing 41, the housing 41 includes a second accommodating chamber 410 for accommodating the drying agent, the housing 41 is embedded in the connecting component 31, and a portion of the housing 41 facing the first accommodating chamber 32 is of a gas-permeable structure.

The desiccant may be of various types, which may be a chemical desiccant that dries by combining with water to produce a hydrate; or may be a physical drying agent, which is dried by physically adsorbing water.

The desiccant may be an irreversible desiccant or a reversible desiccant. When the desiccant is an irreversible desiccant, the desiccant cannot absorb moisture and then release the moisture, and the drying ability of the desiccant gradually disappears as the absorbed moisture increases. The side of the housing 41 facing the first accommodating chamber 32 is a ventilation structure having moderate ventilation property to reduce excessive moisture absorption of the desiccant by the drying member 40 during installation, thereby prolonging the usable time of the desiccant.

The desiccant is a reversible desiccant, which can be released after absorbing moisture, and the air-permeable structure of the housing 41 facing the first accommodating chamber 32 should have strong air permeability to improve the drying effect of the desiccant, so as to improve the drying effect of the first accommodating chamber 32.

The portion of the housing 41 facing the first receiving chamber 32 is an air-permeable structure, which may have various structural forms.

In some examples, the housing 41 has a through hole 413 on a side facing the first accommodating chamber 32, and the through hole 413 can communicate the second accommodating chamber 410 with the first accommodating chamber 32, so that the desiccant can dry the first accommodating chamber 32.

In other examples, a side of the casing 41 facing the first accommodating chamber 32 may be made of a breathable material, and the breathable material of the casing 41 can improve the uniformity of ventilation, so as to improve the drying capability of the drying agent, and further enhance the drying effect of the drying agent on the first accommodating chamber 32.

Referring to fig. 7 and 8, in some embodiments, the housing 41 includes a first portion 411 and a second portion 412 connected to the first portion 411, the first portion 411 includes a second accommodating cavity 410 having a second opening 411a, at least a portion of the first portion 411 is disposed in the connecting member 31, the second portion 412 covers the second opening 411a, and the second portion 412 is an air-permeable structure. Wherein at least one of the first portion 411 and the second portion 412 is connected with the connection member 31.

The first portion 411 may have various shapes, such as a rectangular parallelepiped, a cube, a cylinder, etc., the second portion 412 may also have various shapes, the second portion 412 may be a plate-shaped structure matching the shape of the first portion 411, or a structure with one side opening in the same shape as the first portion 411, for example, the first portion 411 is a rectangular parallelepiped structure, the second portion 412 is a rectangular parallelepiped plate-shaped structure, and the second portion 412 covers the second opening 411 a; alternatively, the first portion 411 and the second portion 412 are both rectangular parallelepiped structures, and the second portion 412 has an opening on one side and is connected to the second opening 411a of the first portion 411.

At least one of the first portion 411 and the second portion 412 is connected to the connecting member 31, that is, the first portion 411 is connected to the connecting member 31, or the second portion 412 is connected to the connecting member 31, or both the first portion 411 and the second portion 412 are connected to the connecting member 31, and the connection form may be a fixed connection or a detachable connection.

There may be various connection forms between the first portion 411 and the second portion 412, such as a fastening connection, for example, an adhesive, a welding connection, a hinge connection, or a detachable connection, for example, a threaded connection, a snap connection, or the like.

In some examples, the first portion 411 and the second portion 412 are detachably connected to facilitate replacement of the desiccant, and when the case is applied to the battery, the first portion 411 and the second portion 412 can be detached and the desiccant in the second accommodating chamber 410 can be replaced when the battery is subjected to routine disassembly inspection, so as to maintain good drying capability of the desiccant, thereby improving the drying effect of the desiccant on the first accommodating chamber 32.

In other examples, the first portion 411 is connected to the second portion 412, and the second portion 412 is reversible relative to the first portion 411.

Exemplarily, first portion 411 and second portion 412 one end are articulated, and the other end adopts buckle fixed connection, and the benefit of this kind of mode of setting is in when changing the drier, need not to dismantle first portion 411 and second portion 412 separation, only needs the upset to open second portion 412, can realize the change to the drier fast, has improved change efficiency and convenience.

Fig. 9 is another schematic structural view of a drying component provided in some embodiments of the present application.

Referring to fig. 7, 8 and 9, in some embodiments, the first portion 411 includes a main portion 411b and an extending portion 411c, the main portion 411b includes a second receiving cavity 410 having a second opening 411a, at least a portion of the main portion 411b is disposed in the connecting member 31, the extending portion 411c extends in a direction away from the second receiving cavity 410, and the extending portion 411c connects the second portion 412 and the connecting member 31.

The extension portion 411c is connected to both the second portion 412 and the connecting member 31, and there may be various connection manners between the extension portion 411c and the second portion 412 and the connecting member 31.

In some examples, the extension 411c is screwed or hinged to the second portion 412, and the extension 411c is fixedly connected to the connecting member 31. In this case, the first portion 411 and the connecting member 31 are fixedly connected, so that the connection strength between the first portion 411 and the connecting member 31 can be improved, and the housing 41 can be stably connected to the box body when the box body is bumped or impacted during transportation or use. The extension 411c is screwed or hinged with the second portion 412, so that the first portion 411 and the second portion 412 can be separated relatively, and the replacement of the internal drying agent can be facilitated.

In other examples, the extension 411c, the second portion 412, and the connecting member 31 are threadedly coupled. In this case, the screw connection can improve the connection strength between the first portion 411 and the second portion 412, and between the first portion 411 and the connecting member 31, and also, when the housing 41 is detached, the housing 41 can be separated from the connecting member 31, and the first portion 411 and the second portion 412 at the same time, which facilitates not only inspection and maintenance of the housing 41, but also replacement of the drying agent.

There may be other various connection methods between the extension portion 411c and the second portion 412 and between the extension portion 411c and the connection member 31, and the application is not limited thereto.

As an embodiment of the present application, please refer to fig. 5 to 8, a case body of the battery includes a case body 3b and a drying member 40, the case body 3b includes a connecting member 31 and a first accommodating cavity 32 enclosed by the connecting member 31, and the first accommodating cavity 32 is used for accommodating a battery cell. The drying member 40 includes a desiccant and a case 41, and the case 41 has a second receiving chamber 410 receiving the desiccant. The housing 41 includes a first portion 411 and a second portion 412, the first portion 411 includes a second accommodating cavity 410 having a second opening 411a, at least a portion of the first portion 411 is disposed in the connecting member 31, the second portion 412 covers the second opening 411a, and the second portion 412 has a through hole 413. The first portion 411 is fixedly connected to the connecting member 31, and the second portion 412 is reversible with respect to the first portion 411.

The first portion 411 is fixedly connected to the connecting member 31, and may be welded, bonded, or the like. The second portion 412 is reversible with respect to the first portion 411, and illustratively, the second portion 412 is hinged to one side of the first portion 411 and is connected to the other side opposite the hinged side using a snap.

In this embodiment, the drying member 40 can dry the first accommodating cavity 32, so that the inside of the box can be in a dry environment, and when the box is applied to a battery, the risk of short circuit caused by the internal structure of the battery being in a humidity environment can be reduced, so that the safety of the battery is improved, and the failure rate of the battery can be reduced.

At least part of the first portion 411 is disposed in the connecting member 31, so that the space occupied by the housing 41 in the first accommodating cavity 32 can be reduced, and when the case is applied to a battery, the space occupied by the accommodating space of the battery cell can be reduced, thereby increasing the accommodating space of the battery cell.

The first portion 411 is fixedly connected with the connecting member 31, so that the connecting strength between the housing 41 and the connecting member 31 can be improved, and the housing 41 can be stably connected to the box body when the box body is bumped or impacted in the transportation or use process of the box body. The second part 412 can be turned over relative to the first part 411, so that the drying agent in the shell 41 can be conveniently taken and placed under the condition that the first part 411 and the second part 412 are not detached and separated, and the efficiency and convenience for replacing the drying agent are improved.

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 (14)

1. A case for a battery, the case comprising:

the battery pack comprises a box body (3 b) and a connecting component (31), wherein the connecting component (31) comprises a side wall (310) enclosing to form a first accommodating cavity (32), and the first accommodating cavity (32) is used for accommodating a battery unit (1); the connecting member (31) further comprises a cavity (312) having a first opening (311), the first opening (311) being arranged towards the first receiving cavity (32), the cavity (312) being arranged at least within the side wall (310);

a drying member (40) disposed at least partially within the cavity (312), the drying member (40) for drying the first receiving cavity (32).

2. A cabinet according to claim 1, wherein the connecting member (31) further includes a bottom wall connected to a side wall (310), and the side wall (310) is disposed around the bottom wall, the cavity (312) being disposed in the bottom wall and the side wall (310).

3. A cabinet according to claim 1, wherein the cabinet body (3 b) further includes a reinforcing member (33) provided in the first receiving chamber (32), the reinforcing member (33) being connected to the connecting member (31), at least a portion of the drying member (40) being provided in the reinforcing member (33).

4. A cabinet according to claim 1, wherein the connection member (31) comprises a connection body (313) and a recess (314), the recess (314) being recessed with respect to the connection body (313) in a direction away from the first housing chamber (32), at least part of the drying member (40) being disposed in the recess (314).

5. The cabinet according to claim 1, wherein a pressure relief member is provided in the cabinet, and the drying member (40) is provided adjacent to the pressure relief member.

6. A cabinet as claimed in claim 1, wherein the drying member (40) is provided in plurality.

7. A cabinet according to claim 1, wherein the drying member (40) is detachably connected to the connecting member (31).

8. A cabinet according to any one of claims 1 to 7, wherein the drying member (40) includes:

a desiccant; and

a housing (41), wherein the housing (41) comprises a second accommodating cavity (410) for accommodating the drying agent, the housing (41) is embedded in the connecting component (31), and the part of the housing (41) facing the first accommodating cavity (32) is of a ventilation structure.

9. The cabinet as claimed in claim 8,

a portion of the housing (41) facing the first accommodation chamber (32) has a through hole (413), the through hole (413) communicating the second accommodation chamber (410) and the first accommodation chamber (32); and/or

The part of the shell (41) facing the first accommodating cavity (32) is made of air-permeable materials.

10. The cabinet according to claim 8, wherein the housing (41) comprises:

a first portion (411), said first portion (411) comprising said second housing cavity (410) having a second opening (411 a), at least part of said first portion (411) being arranged within said connecting member (31);

a second portion (412) connected to the first portion (411), the second portion (412) covering the second opening (411 a), the second portion (412) being of a breathable structure,

wherein at least one of the first portion (411) and the second portion (412) is connected with the connecting member (31).

11. A cabinet according to claim 10, wherein said first portion (411) is removably associated with said second portion (412); or

The first portion (411) is connected to the second portion (412), and the second portion (412) is reversible with respect to the first portion (411).

12. The cabinet according to claim 10, characterized in that said first portion (411) comprises:

a body portion (411 b), the body portion (411 b) including the second accommodation chamber (410) having the second opening (411 a), at least a portion of the body portion (411 b) being disposed within the connecting member (31); and

an extension portion (411 c), the extension portion (411 c) extending toward a direction away from the second accommodation chamber (410), the extension portion (411 c) connecting the second portion (412) and the connection member (31).

13. A battery comprising a case as claimed in any one of claims 1 to 12.

14. An electrical device comprising a battery as claimed in claim 13 for providing electrical energy.

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