CN217387346U - Battery box, battery and power consumption device - Google Patents

Abstract

The application provides a battery box, battery and power consumption device, battery box include the casing and absorb water the layer, and the casing has first cavity and inner wall, and the layer that absorbs water is located first cavity, and the layer setting that just absorbs water is on at least a part of inner wall. The layer that absorbs water can absorb the inside moisture of battery, realizes that the battery is inside dry, prevents that moisture from causing the potential safety hazard to battery system.

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 body, a battery and an electric device.

Background

Energy conservation and emission reduction are the key points of sustainable development of the automobile industry, and electric vehicles become important components of the sustainable development of the automobile industry due to the advantages of energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in its development.

The temperature of the battery changes during the use process, water vapor in the air is condensed into liquid water drops inside the battery under the influence of the temperature, and the safety performance of the battery is influenced by moisture such as the water drops and the water vapor.

SUMMERY OF THE UTILITY MODEL

The present application is directed to solving at least one of the problems in the prior art. Therefore, an object of the present application is to provide a battery case, a battery and an electric device to improve the safety problem of the battery caused by water drops.

An embodiment of a first aspect of the present application provides a battery case, including: a housing having a first cavity and an inner wall; a water-absorbing layer positioned within the first cavity and disposed on at least a portion of the inner wall; the water absorption layer forms a closed second cavity in the first cavity, and the top of the second cavity can be opened and closed.

Among the technical scheme of this application embodiment, the layer that absorbs water can absorb the inside moisture of battery, realizes the inside drying of battery, prevents that moisture from causing the potential safety hazard to battery system. The second cavity is the parcel effect of confined assurance layer to battery pack that absorbs water for the layer that absorbs water can be with the moisture absorption around the battery pack, guarantees the effect of absorbing water. Because the top of second cavity can open and shut, can take out battery pack from the second cavity, it is more convenient.

In some embodiments, the inner wall is provided with a water-absorbent layer fastener. The layer mounting that absorbs water fixes to the water-absorbing layer, can avoid the layer that absorbs water to remove, guarantees the steadiness and the effect of absorbing water on the layer that absorbs water.

In some embodiments, a water-absorbent layer support is disposed on the inner wall. The water layer support piece supports the water absorption layer, a certain distance is reserved between the water absorption layer at the bottom and the inner wall of the shell, and the water absorption effect of the water absorption layer at the bottom is guaranteed.

In some embodiments, the water-absorbent layer comprises: a water-absorbing material layer; and an insulating layer on at least one surface of the water-absorbent material layer. The insulating layer covers the surface of the water absorbing material layer, protects the water absorbing material layer, and separates the water absorbing material layer from the battery assembly, so that the water absorbing material layer is prevented from influencing the battery assembly.

In some embodiments, the water-absorbing layer comprises two insulating layers, the side edges of the two insulating layers are connected to form a containing cavity, and the water-absorbing material layer is located in the containing cavity. The two insulating layers wrap the water absorbing material layer, the protection effect on the water absorbing material layer is enhanced, and the water absorbing material layer is prevented from influencing the battery assembly.

In some embodiments, the insulating layer has a plurality of gas permeable holes. The water vapor and the liquid water can enter the water absorbing material layer through the air holes and are absorbed by the water absorbing material layer, and the water absorbing effect of the water absorbing material layer is enhanced.

In some embodiments, the insulating layer comprises at least one of a plastic optical fiber film, a polyethylene film, a polyvinyl chloride film, a polyvinylidene fluoride film, a separator film, a polyimide film, a silica gel pad, a porous metal film, a porous ceramic film, and a molecular sieve film. The material with better insulating property can ensure the insulating effect of the insulating layer.

In some embodiments, the material of the water absorbing material layer comprises at least one of calcium sulfate, calcium chloride, phosphorus pentoxide, silica gel, activated alumina, and molecular sieves. The materials are all materials with better water absorption performance, and the water absorption effect of the water absorption material layer can be ensured.

In some embodiments, the absorbent layer includes a first side portion, a second side portion, a third side portion, a fourth side portion, and a body portion having a first side edge, a second side edge, a third side edge, and a fourth side edge connected in series, the first side portion foldably connected to the first side edge, the second side portion foldably connected to the second side edge, the third side portion foldably connected to the third side edge, and the fourth side portion foldably connected to the fourth side edge. The second cavity is more conveniently formed.

In some embodiments, the water-absorbing layer has a thickness H1 of greater than or equal to 1mm and less than or equal to 5 mm. The layer that absorbs water has certain thickness and just can guarantee better effect of absorbing water, avoids the thickness on layer that absorbs water too thick simultaneously, occupies battery pack's volume to influence the electric capacity of battery.

In some embodiments, the housing includes a removable cover. After the layer that absorbs water has absorbed full water, the lid that can dismantle, then take out battery pack from the battery box, then will absorb water the layer and take out from the casing and change, can guarantee to absorb the moisture in the battery pack on the one hand, can not make whole battery unable use because the layer that absorbs water also simultaneously, avoided the wasting of resources.

Embodiments of the second aspect of the present application provide a battery including the battery case of the above embodiments.

Embodiments of the third aspect of the present application provide an electric device, which includes the battery in the above embodiments, and the battery is used for providing electric energy.

The foregoing description is only an overview of the technical solutions of the present application, and the present application can be implemented according to the content of the description in order to make the technical means of the present application more clearly understood, and the following detailed description of the present application is given in order to make the above and other objects, features, and advantages of the present application more clearly understandable.

Drawings

In the drawings, like reference numerals refer to the same or similar parts or elements throughout the several views unless otherwise specified. The figures are not necessarily to scale. It is appreciated that these drawings depict only some embodiments in accordance with the disclosure and are therefore not to be considered limiting of its scope.

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

FIG. 2 is an exploded view of a battery according to some embodiments of the present application;

fig. 3 is an exploded view of a battery cell according to some embodiments of the present disclosure;

fig. 4 is a schematic structural diagram of a battery case according to some embodiments of the present application;

FIG. 5 is a schematic structural view of a water-absorbent layer according to some embodiments of the present disclosure;

FIG. 6 is a plan view of a water-absorbent layer according to some embodiments of the present disclosure;

fig. 7 is a schematic structural diagram of a battery provided in some embodiments of the present application;

FIG. 8 is a plan view of a water cooled panel provided by some embodiments of the present application;

fig. 9 is a cross-sectional view of the E-E face of the water-cooled plate provided in fig. 8.

Description of the reference numerals:

1000. a vehicle;

1100. a battery; 1200. a controller; 1300. a motor;

10. a battery case; 11. a first portion; 12. a second portion;

20. a battery cell; 21. an end cap; 211. an electrode terminal; 22. a housing; 23. an electrical core assembly; 231. a tab;

100. a housing; 110. a water-absorbing layer fixing member; 120. a water-absorbent layer support; 130. a cover;

200. a water-absorbing layer; 210. a water-absorbing material layer; 220. an insulating layer; 2201. air holes are formed; 230. a first side portion; 240. a second side portion; 250. a third side portion; 260. a fourth side portion; 270. a main body portion; 2701. a first side edge; 2702. a second side edge; 2703. a third side; 2704. a fourth side;

300. a metal mesh; 310. a hoisting ring;

400. a battery assembly;

500. a water-cooling plate; 510. a flow-through channel.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely used to more clearly illustrate the technical solutions of the present application, and therefore are only examples, and the protection scope of the present application is not limited thereby.

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 herein 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.

In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only for distinguishing different objects, and are not to be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary-secondary relationship of the technical features indicated. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

Reference herein 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 application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

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

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural pieces" refers to two or more (including two).

In the description of the embodiments of the present application, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships that are based on the orientations and positional relationships shown in the drawings, and are used for convenience in describing the embodiments of the present application and for simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

At present, the application of the power battery is more and more extensive from the development of market situation. The power battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles and electric automobiles, and a plurality of fields such as military equipment and aerospace. With the continuous expansion of the application field of the power battery, the market demand is also continuously expanding.

The applicant has noticed that during use of the battery, water droplets may collect on the bottom of the battery, which may easily cause short-circuiting of the battery. The main reason is that the in-process temperature variation that the battery was using is great, and temperature variation is more frequent, and the inside vapor of battery meets the temperature variation back, can condense into the water droplet, and the water droplet can gather in the bottom of battery under the effect of gravity, and moisture such as vapor and water droplet probably contact with the inside components and parts of battery, arouses the incident such as battery short circuit, insulation failure or even conflagration easily, causes the potential safety hazard to battery system.

In order to solve the problem of influence of moisture on the safety performance of the battery, the applicant researches and discovers that a water absorbing layer can be arranged in the battery box body to absorb moisture in the battery, so that the moisture in the battery can be reduced, and the safety of the battery is ensured.

The battery box disclosed in the embodiment of the application can be used in electric devices such as vehicles, ships or aircrafts, but not limited to the electric devices. The power supply system who possesses this electric installation of constitution such as battery box, battery that this application disclosed can be used, like this, is favorable to alleviating the influence of moisture to the battery, promotes the stability and the battery life-span of battery performance.

The embodiment of the application provides an electric device using a battery as a power supply, wherein the electric device can be but is not limited to a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric automobile, a ship, a spacecraft and the like. The electric toy may include a stationary or mobile electric toy, such as a game machine, an electric car toy, an electric ship toy, an electric airplane toy, and the like, and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, and the like.

For convenience of description, the following embodiments take an example in which a power consuming apparatus according to an embodiment of the present application is a vehicle 1000.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1000 according to some embodiments of the present disclosure. The vehicle 1000 may be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile may be a pure electric automobile, a hybrid electric automobile, or a range-extended automobile, etc. The interior of the vehicle 1000 is provided with a battery 1100, and the battery 1100 may be provided at the bottom or at the head or tail of the vehicle 1000. The battery 1100 may be used for power supply of the vehicle 1000, and for example, the battery 1100 may serve as an operation power source of the vehicle 1000. The vehicle 1000 may further include a controller 1200 and a motor 1300, the controller 1200 being configured to control the battery 1100 to power the motor 1300, for example, for start-up, navigation, and operational power requirements while traveling of the vehicle 1000.

In some embodiments of the present application, the battery 1100 may be used not only as an operating power source of the vehicle 1000, but also as a driving power source of the vehicle 1000, instead of or in part of fuel or natural gas, to provide driving power for the vehicle 1000.

Referring to fig. 2, fig. 2 is an exploded view of a battery 1100 according to some embodiments of the present disclosure. The battery 1100 includes a battery case 10 and a battery cell 20, and the battery cell 20 is accommodated in the battery case 10. The battery case 10 is used to provide a receiving space for the battery cells 20, and the battery case 10 may have various structures. In some embodiments, the battery case 10 may include a first portion 11 and a second portion 12, the first portion 11 and the second portion 12 cover each other, and the first portion 11 and the second portion 12 together define a receiving space for receiving the battery cell 20. The second part 12 may be a hollow structure with one open end, the first part 11 may be a plate-shaped structure, and the first part 11 covers the open side of the second part 12, so that the first part 11 and the second part 12 jointly define a containing space; the first portion 11 and the second portion 12 may be both hollow structures with one side open, and the open side of the first portion 11 may cover the open side of the second portion 12. Of course, the battery case 10 formed by the first and second portions 11 and 12 may have various shapes, such as a cylinder, a rectangular parallelepiped, and the like.

In the battery 1100, the number of the battery cells 20 may be multiple, and the multiple battery cells 20 may be connected in series or in parallel or in series-parallel, where in series-parallel refers to both series connection and parallel connection among the multiple battery cells 20. The plurality of battery monomers 20 can be directly connected in series or in parallel or in series-parallel, and the whole formed by the plurality of battery monomers 20 is accommodated in the battery box body 10; of course, the battery 1100 may also be formed by connecting a plurality of battery cells 20 in series, in parallel, or in series-parallel to form a battery module, and then connecting a plurality of battery modules in series, in parallel, or in series-parallel to form a whole, and the whole is accommodated in the battery box 10. The battery 1100 may also include other structures, for example, the battery 1100 may also include a bus member for achieving electrical connection between the plurality of battery cells 20.

Wherein each battery cell 20 may be a secondary battery or a primary battery; but is not limited to, a lithium sulfur battery, a sodium ion battery, or a magnesium ion battery. The battery cell 20 may be cylindrical, flat, rectangular parallelepiped, or other shape.

Referring to fig. 3, fig. 3 is an exploded schematic view of a battery cell 20 according to some embodiments of the present disclosure. The battery cell 20 refers to the smallest unit constituting the battery. Referring to fig. 3, the battery cell 20 includes an end cap 21, an outer casing 22, a battery cell assembly 23, and other functional components.

The end cap 21 refers to a member that covers an opening of the case 22 to insulate the internal environment of the battery cell 20 from the external environment. Without limitation, the shape of the end cap 21 may be adapted to the shape of the housing 22 to fit the housing 22. Alternatively, the end cap 21 may be made of a material (e.g., an aluminum alloy) having a certain hardness and strength, so that the end cap 21 is not easily deformed when being impacted, and the battery cell 20 may have a higher structural strength and improved safety. The end cap 21 may be provided with functional components such as the electrode terminal 211. The electrode terminal 211 may be used to be electrically connected with the electric core assembly 23 for outputting or inputting electric power of the battery cell 20. In some embodiments, the end cap 21 may further be provided with a pressure relief mechanism for relieving the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold value. The material of the end cap 21 may also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not limited in this embodiment. In some embodiments, insulation may also be provided on the inside of the end cap 21, which may be used to isolate the electrical connection components within the housing 22 from the end cap 21 to reduce the risk of short circuits. Illustratively, the insulator may be plastic, rubber, or the like.

Housing 22 is an assembly for mating with end cap 21 to form the internal environment of cell 20, wherein the formed internal environment may be used to house cell assembly 23, electrolyte, and other components. The housing 22 and the end cap 21 may be separate components, and an opening may be provided in the housing 22, and the internal environment of the battery cell 20 may be formed by covering the opening with the end cap 21. The end cap 21 and the housing 22 may be integrated, and specifically, the end cap 21 and the housing 22 may form a common connecting surface before other components are inserted into the housing, and when it is required to seal the inside of the housing 22, the end cap 21 covers the housing 22. The housing 22 may be a variety of shapes and sizes, such as rectangular parallelepiped, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 22 may be determined according to the specific shape and size of the electric core assembly 23. The material of the housing 22 may be various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present invention is not limited thereto.

The cell assembly 23 is a component in the battery cell 20 where electrochemical reactions occur. One or more electrical core assemblies 23 may be contained within the housing 22. The core assembly 23 is mainly formed by winding or stacking a positive electrode sheet and a negative electrode sheet, and a separator is generally provided between the positive electrode sheet and the negative electrode sheet. The portions of the positive and negative electrode sheets having the active material constitute the main body of the cell assembly, and the portions of the positive and negative electrode sheets having no active material each constitute the tab 231. The positive electrode tab and the negative electrode tab may be located at one end of the main body portion together or at both ends of the main body portion, respectively. During the charge and discharge of the battery, the positive and negative active materials react with the electrolyte, and the tab 231 is connected to the electrode terminal to form a current loop.

The embodiment of the present application provides a battery box 10, refer to fig. 4, and fig. 4 is a schematic structural diagram of the battery box provided in some embodiments of the present application, where the battery box 10 includes a housing 100 and a water-absorbing layer 200, the housing 100 has a first cavity and an inner wall, the water-absorbing layer 200 is located in the first cavity, and the water-absorbing layer 200 is disposed on at least a portion of the inner wall, where the water-absorbing layer 200 forms a closed second cavity in the first cavity, and a top of the second cavity can be opened and closed.

In the embodiment of the present application, the inner wall of the casing 100 is used to form the internal environment of the battery case 10, i.e., a first cavity for accommodating the battery components, the water absorbing layer 200, and other components. The first cavity may be various shapes and various sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism shape, and the like. Specifically, the shape of the first cavity may be determined according to the specific shape and size of the battery assembly. One or more battery components may be contained within the first cavity. Wherein, battery pack includes a plurality of battery monomer.

The material of the housing 100 may be various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not limited in this embodiment.

The absorbent layer 200 is disposed on at least a portion of the inner wall, meaning that the absorbent layer 200 can be attached to a portion of the inner wall or the entire inner wall, and the application is not limited thereto.

In the embodiment of the present application, the water absorbent layer 200 forms a closed second cavity in the first cavity for accommodating the battery assembly.

In this application embodiment, layer 200 absorbs water can absorb the inside moisture of battery, realizes the inside drying of battery, prevents that moisture from causing the potential safety hazard to battery system. The second cavity is the confined assurance layer 200 that absorbs water to battery pack's parcel effect for layer 200 that absorbs water can absorb the moisture around the battery pack, guarantees the effect of absorbing water. Because the top of second cavity can open and shut, can take out battery pack from the second cavity, it is more convenient.

In this application embodiment, the temperature variation around the battery pack is great, so most moisture is located around the battery pack, and the battery pack is located first cavity, and layer 200 that absorbs water also is located first cavity, and layer 200 that absorbs water is close with moisture distance, and moisture is absorbed by layer 200 that absorbs water more easily.

Meanwhile, the water absorption layer 200 can play a role in buffering to protect the battery assembly.

According to some embodiments of the present application, referring to fig. 4, a water absorbent layer fixing member 110 is disposed on the inner wall.

In the embodiment of the present application, the absorbent layer fixing member 110 may be an adhesive or a fixing post.

Illustratively, the adhesive may be an adhesive layer that adheres the water absorbent layer 200 to the inner wall of the casing 100.

Illustratively, the water absorbing layer 200 is provided with through holes, the inner wall of the housing 100 is provided with grooves at positions corresponding to the through holes, when the water absorbing layer 200 is installed, the through holes on the water absorbing layer 200 are in one-to-one correspondence with the grooves on the inner wall, and then the fixing columns penetrate through the through holes and are inserted into the grooves, so as to fix the water absorbing layer 200.

In other implementations, the absorbent layer fixing member 110 may also be other components, which is not limited by the embodiments of the present application.

In the embodiment of the present application, the water-absorbing layer fixing element 110 may be made of an insulating material, so as to prevent the water-absorbing layer fixing element 110 from causing a short circuit inside the battery.

When a battery module is placed in the battery case 10, the battery module may rub against the water-absorbing layer 200, causing the water-absorbing layer 200 to move, and if the water-absorbing layers 200 are stacked together, the water-absorbing effect of the water-absorbing layer 200 may be affected. The water absorption layer fixing member 110 fixes the water absorption layer 200, so that the water absorption layer 200 can be prevented from moving, and the stability and the water absorption effect of the water absorption layer 200 can be ensured.

According to some embodiments of the present application, a water-absorbent layer support 120 is disposed on the inner wall.

In the present embodiment, the water absorbent layer support 120 may be a support column.

Illustratively, the inner wall of the housing 100 has a plurality of support pillars, one surface of which is connected to the inner wall of the housing 100, and the other surface opposite to the support pillars is used to support the water absorbent layer 200.

In other implementations, the water-absorbing layer support 120 may also be other components, which is not limited by the embodiments of the present application.

In the embodiment of the present application, the water-absorbing layer supporting member 120 may be made of an insulating material, so as to prevent the water-absorbing layer supporting member 120 from causing a short circuit inside the battery.

In this application embodiment, battery pack and the layer 200 that absorbs water all are located first cavity, the layer 200 that absorbs water is located between the inner wall of battery pack and casing 100, and battery pack presses on the layer 200 that absorbs water that is located the bottom, make the layer 200 that absorbs water that is located the bottom extruded, can influence the effect of absorbing water of the layer 200 that absorbs water, layer support piece 120 that absorbs water supports water-absorbing layer 200, it can not be extruded to be located to have certain distance between the layer 200 that absorbs water of bottom and the inner wall of casing 100, the assurance is located the bottom and absorbs water the effect of absorbing water of layer 200.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a water-absorbing layer according to some embodiments of the present disclosure. The water absorbent layer 200 includes a water absorbent material layer 210 and an insulating layer 220, and the insulating layer 220 is located on at least one surface of the water absorbent material layer 210.

In the embodiment of the present application, the insulating layer 220 is located on at least one surface of the water absorbing material layer 210, which means that the insulating layer 220 covers one surface of the water absorbing material layer 210, or the insulating layer 220 covers two opposite surfaces of the water absorbing material layer 210.

In this application embodiment, water absorbing material layer 210 is used for absorbing moisture, guarantees the water absorption effect on water absorbing material layer, and insulating layer 220 covers water absorbing material layer 210's surface, protects water absorbing material layer 210, separates water absorbing material layer 210 and battery pack simultaneously, avoids water absorbing material layer 210 to influence battery pack.

Referring to fig. 5, the water absorbent layer includes two insulating layers 220, sides of the two insulating layers 220 are connected to form a receiving cavity, and the water absorbent material layer 210 is located in the receiving cavity.

In the embodiment of the present application, the accommodating cavity is used for accommodating the water absorbing material layer 210, and the two insulating layers 220 may be integrally formed, or the two insulating layers 220 may be formed first and then the sides of the two insulating layers 220 are connected together.

In the embodiment of the present application, the water absorbing material layer 210 is located in the accommodating cavity formed by the two insulating layers 220, that is, the two insulating layers 220 wrap the water absorbing material layer 210, so as to enhance the protection effect on the water absorbing material layer 210 and prevent the water absorbing material layer 210 from affecting the battery assembly.

Referring to fig. 5, the insulating layer 220 has a plurality of ventilation holes 2201.

In the embodiment of the present application, the shape of the air holes 2201 may be a cylinder, a rectangular parallelepiped, a triangular prism, or any other regular or irregular shape.

In the embodiment of the present application, since the water absorbing material layer 210 is wrapped by the two insulating layers 220, the insulating layers 220 may block moisture from entering the water absorbing material layer 210, thereby affecting the water absorbing effect. The insulating layer 220 has a plurality of air vents 2201, so that water vapor and liquid water can enter the water absorbent material layer 210 through the air vents 2201 and be absorbed by the water absorbent material layer 210, thereby enhancing the water absorption effect of the water absorbent material layer 210.

The insulating layer 220 includes at least one of a Plastic Optical Fiber (POF) film, a Polyethylene (PE) film, a Polyvinyl Chloride (PVC) film, a Polyvinylidene fluoride (PVDF) film, a diaphragm, a polyimide film, a silica gel pad, a porous metal film, a porous ceramic film, and a molecular sieve film.

The insulating layer 220 includes at least one of a plastic optical fiber film, a polyethylene film, a polyvinyl chloride film, a polyvinylidene fluoride film, a separator, a polyimide film, a silica gel pad, a porous metal film, a porous ceramic film, and a molecular sieve film, and the insulating layer 220 may be one or more of the above materials.

In the embodiment of the present application, the materials of the two insulating layers 220 may be the same or different, and the present application does not limit this.

In other implementations, the insulating layer 220 may be other insulating materials.

The plastic optical fiber film, the polyethylene film, the polyvinyl chloride film, the polyvinylidene fluoride film, the diaphragm, the polyimide film, the silica gel pad, the porous metal film, the porous ceramic film and the molecular sieve film are all materials with better insulating property, and the insulating effect of the insulating layer 220 can be ensured.

The material of water absorbing material layer 210 includes calcium sulfate (CaSO) ₄ ) Calcium chloride (CaCl) ₂ ) Phosphorus pentoxide (P) ₂ O ₅ ) At least one of silica gel, activated alumina and molecular sieves.

The material of the water absorbing material layer 210 includes at least one of calcium sulfate, calcium chloride, phosphorus pentoxide, silica gel, activated alumina, and molecular sieve, and the material of the water absorbing material layer 210 may be a mixture of one or more of the above materials.

In other implementations, the water absorbing material layer 210 may be other materials having a water absorbing effect.

Calcium sulfate, calcium chloride, phosphorus pentoxide, silica gel, activated alumina and molecular sieve are all materials with better water absorption performance, and the water absorption effect of the water absorption material layer 210 can be ensured.

Referring to fig. 6, fig. 6 is a plan view of a water absorbent layer according to some embodiments of the present disclosure. The absorbent layer 200 includes a first side portion 230, a second side portion 240, a third side portion 250, a fourth side portion 260, and a body portion 270, the body portion 270 having a first side 2701, a second side 2702, a third side 2703, and a fourth side 2704 connected in series, the first side portion 230 being foldably connected to the first side 2701, the second side portion 240 being foldably connected to the second side 2702, the third side portion 250 being foldably connected to the third side 2703, and the fourth side portion 260 being foldably connected to the fourth side 2704.

In the embodiment of the present application, the first side portion 230, the second side portion 240, the third side portion 250, the fourth side portion 260, and the main body portion 270 of the water absorbent layer 200 may be integrally formed, or the first side portion 230, the second side portion 240, the third side portion 250, the fourth side portion 260, and the main body portion 270 are first manufactured, and then the first side portion 230, the second side portion 240, the third side portion 250, and the fourth side portion 260 are respectively connected to the first side edge 2701, the second side edge 2702, the third side edge 2703, and the fourth side edge 2704 of the main body portion 270.

In the present embodiment, the water absorbent layer 200 is placed in the first cavity, and the first side 230, the second side 240, the third side 250, and the fourth side 260 are folded along the first side 2701, the second side 2702, the third side 2703, and the fourth side 2704, respectively, to form a second cavity. That is, the first side portion 230, the second side portion 240, the third side portion 250, the fourth side portion 260 and the main body portion 270 constitute a side wall of the second cavity, which facilitates the formation of the second cavity.

In this embodiment, the battery matched with the battery box may be a square battery, and the second cavity formed by the water absorbing layer 200 is a cuboid.

Referring to fig. 6, the shape of the main body 270, the shape of the first side 230, the shape of the second side 240, the shape of the third side 250, and the shape of the fourth side 260 are all rectangular, so that the second cavity formed by the water absorbent layer 200 is a rectangular parallelepiped.

In one implementation of the embodiment of the present application, a length a1 of the first side 230 is equal to a length L1 of the first side 2701, a length B1 of the second side 240 is equal to a length L2 of the second side 2702, and another length a2 of the first side 230 is less than or equal to another length B2 of the second side 240. One side length C1 of the third side portion 250 is equal to the length L3 of the third side 2703, one side length D1 of the fourth side portion 260 is equal to the side length L4 of the fourth side 2704, and the other side length C2 of the third side portion 250 is less than or equal to the other side length D2 of the fourth side portion 260. The sum of the other side length B2 of the second side 240 and the other side length D2 of the fourth side 260 is equal to or greater than the sum of the other side length a2 of the first side 230, the other side length C2 of the third side 250, and the length L1 of the first side 2701. Such setting can guarantee that the second cavity that layer 200 formed absorbs water is closed, can wrap up battery pack completely, guarantees the water absorption effect of layer 200 that absorbs water.

In one implementation of the embodiment of the present application, a difference between a sum of the other side length B2 of the second side 240 and the other side length D2 of the fourth side 260 and a sum of the other side length a2 of the first side 230, the other side length C2 of the third side 250, and the length L1 of the first side 2701 is greater than or equal to 0mm and less than or equal to 5 mm. The arrangement ensures that the second cavity formed by the water absorbing layer 200 is closed, can completely wrap the battery assembly, and simultaneously avoids the phenomenon that the occupied volume of the water absorbing layer 200 is too much to influence the electric capacity of the battery.

In one implementation of the embodiment of the present application, the sum of the other side length B2 of the second side 240 and the other side length D2 of the fourth side 260 is equal to the sum of the other side length a2 of the first side 230, the other side length C2 of the third side 250, and the length L1 of the first side 2701. That is, the water-absorbent layer 200 has a cross-shaped plan view, so that the water-absorbent layer 200 occupies the smallest area and the smallest volume on the premise that the second cavity formed by the water-absorbent layer 200 is closed.

In one implementation of the embodiment of the present application, the sum of the other side length a2 of the first side 230 and half of the length L1 of the first side 2701 is equal to the other side length B2 of the second side 240, and the sum of the other side length C2 of the third side 250 and half of the length L3 of the third side 2703 is equal to the other side length D4 of the fourth side 260. I.e., the second side 240 is identical in shape to the fourth side 260.

In other implementations, the other side length a2 of the first side 230 is equal to the other side length B2 of the second side 240, and the sum of the other side length C2 of the third side 250 and the length L3 of the third side 2703 is equal to the other side length D4 of the fourth side 260.

In the embodiment of the present application, the thickness H1 of the water-absorbent layer 200 is greater than or equal to 1mm and less than or equal to 5 mm.

In the present embodiment, the thickness H1 of the water absorbent layer 200 includes the total thickness of the water absorbent material layer 210 and the insulating layer 220.

The layer 200 that absorbs water has certain thickness and just can guarantee better effect of absorbing water, avoids the thickness that absorbs water layer 200 too thick simultaneously, occupies battery pack's volume to influence the electric capacity of battery.

Referring to fig. 4, the housing 100 includes a detachable cover 130.

In the present embodiment, the case 100 has an opening to ensure that the water absorbent layer 200 and the battery module can be taken out. The cover 130 refers to a member covering the opening of the case 100 to isolate the internal environment of the battery from the external environment. Without limitation, the shape of the housing 100 may be adapted to the shape of the housing 100 to fit the housing 100.

Alternatively, the case 100 may be made of a material (e.g., an aluminum alloy) having certain hardness and strength, so that the case 100 is not easily deformed when being impacted by the extrusion, and the battery case 10 may have higher structural strength and improved safety. The material of the cover 130 may also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not limited in the embodiments of the present invention.

In the present embodiment, the cover 130 may be located at the top or the side of the housing 100.

Because casing 100 includes detachable lid 130, after layer 200 that absorbs water has absorbed full water, can dismantle lid 130, then take out battery pack from the battery box, then will absorb water layer 200 and take out from casing 100 and change, can guarantee to absorb the moisture in the battery pack on the one hand, also can not make whole battery unable use because layer 200 that absorbs water simultaneously can't absorb water, avoided the wasting of resources.

The embodiment of the application provides a battery box body, and the battery box body 10 comprises a shell 100 and a water absorption layer 200.

The battery case 10 is a square battery case, the housing 100 has a first cavity and an inner wall, and the housing 100 includes a water-absorbing layer fixing member 110, a water-absorbing layer supporting member 120, and a detachable cover 130. The water-absorbing layer fixing member 110 is an adhesive to adhere the water-absorbing layer 200 to the inner wall of the casing 100, and the water-absorbing layer supporting member 120 is a supporting column. The cover 130 is an over-cap.

The water absorbent layer 200 includes a water absorbent material layer 210 and two insulating layers 220, wherein the sides of the two insulating layers 220 are connected to form a receiving cavity, and the water absorbent material layer 210 is located in the receiving cavity. The insulating layer 220 has a plurality of ventilation holes 2201. The absorbent layer 200 includes a first side portion 230, a second side portion 240, a third side portion 250, a fourth side portion 260, and a main body portion 270, the main body portion 270 having a first side 2701, a second side 2702, a third side 2703, and a fourth side 2704 connected in this order, the first side portion 230 being foldably connected to the first side 2701, the second side portion 240 being foldably connected to the second side 2702, the third side portion 250 being foldably connected to the third side 2703, and the fourth side portion 260 being foldably connected to the fourth side 2704. The first side portion 230 has a length A1 equal to the length L1 of the first side 2701, the second side portion 240 has a length B1 equal to the length L2 of the second side 2702, the third side portion 250 has a length C1 equal to the length L3 of the third side 2703, and the fourth side portion 260 has a length D1 equal to the length L4 of the fourth side 2704. The sum of the other side length B2 of the second side 240 and the other side length D2 of the fourth side 260 is equal to the sum of the other side length a2 of the first side 230, the other side length C2 of the third side 250, and the length L1 of the first side 2701.

The embodiment of the application also provides a battery, and the battery comprises a battery box body in any implementation mode.

The battery may be applied to, but not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like. The electric toy may include a stationary or mobile electric toy, such as a game machine, an electric car toy, an electric ship toy, an electric airplane toy, and the like, and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, and the like.

Through adopting the battery box in the embodiment of the present disclosure, the internal drying of the battery is ensured, the short circuit is not easy, and the safety is high.

Referring to fig. 7, fig. 7 is a schematic structural diagram of a battery according to some embodiments of the present disclosure. The battery includes a battery case 10, a metal mesh 300, and a battery assembly 400, the metal mesh 300 having a third cavity, the battery assembly 400 being located in the third cavity. The battery assembly 400 includes a plurality of battery cells 20. The metal mesh 300 protects the battery assembly 400, reducing the possibility of damage to the battery assembly 400. Meanwhile, the metal mesh 300 has holes, so that the effects of ventilation and heat conduction can be realized, moisture can enter the water absorbing layer 200 through the metal mesh 300, and the heat of the battery assembly 400 can be ensured to be dissipated.

Referring to fig. 7, the metal mesh 300 has a hanging ring 310 on the top. Therefore, when the battery assembly 400 is taken out, a hoisting device can be used in cooperation, and the hoisting device hooks the hoisting ring 310 to take the battery assembly 400 out of the battery box body 10. The removed battery assembly 400 has a complete battery pack system function and can work independently from the case.

In other implementations, a hydraulic lifting device may be disposed at the bottom of the battery box 10, the battery assembly 400 is located on the hydraulic lifting device, and the battery assembly 400 may be taken out of the battery box 10 through the hydraulic lifting device.

In an implementation manner of the embodiment of the application, the battery further comprises a water cooling plate, a connection wire harness and the like, wherein the water cooling plate and the connection wire harness are located in the third cavity, and energy storage and charging and discharging functions of the battery can be realized. The water-cooling plate 500 is located between the bottom of the battery assembly 400 and the metal mesh 300, and cools the battery assembly 400.

Illustratively, the connection harness may pass through the water absorbent layer 200 to be connected with an external device.

Referring to fig. 8 and 9, fig. 8 is a plan view of a water-cooling plate according to some embodiments of the present application, fig. 9 is a cross-sectional view of plane E-E of the water-cooling plate provided in fig. 8, a flow channel 510 inside the water-cooling plate 500 is a plurality of connected zigzag pipes to increase a cooling area, and condensed liquid is provided in the flow channel 510.

In other implementations, the shape of the flow channel 510 inside the water cooling plate 500 may also be other shapes, which is not limited in this application.

An embodiment of the present application provides an electrical device, which includes a battery according to any of the embodiments, wherein the battery is used for providing electrical energy.

The powered device may be, but is not limited to, a cell phone, tablet, laptop, electronic toy, electric tool, battery car, electric car, ship, spacecraft, and the like. The electric toy may include a stationary or mobile electric toy, such as a game machine, an electric car toy, an electric ship toy, an electric airplane toy, and the like, and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, and the like.

Through adopting the battery in the embodiment of the present disclosure, the internal drying of the battery can be ensured, and the short circuit is not easy, so that the safety of the power utilization device is high.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present disclosure, and the present disclosure should be construed as being covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims (13)

1. A battery case, comprising:

a housing (100) having a first cavity and an inner wall;

a water-absorbent layer (200) located within the first cavity, the water-absorbent layer (200) disposed on at least a portion of the inner wall;

the water absorption layer (200) forms a closed second cavity in the first cavity, and the top of the second cavity can be opened and closed.

2. The battery box of claim 1, characterized in that the inner wall is provided with a water-absorbing layer fixing member (110).

3. The battery box according to claim 1, characterized in that a water-absorbing layer support (120) is provided on the inner wall.

4. The battery case according to any one of claims 1 to 3, wherein the water-absorbing layer (200) comprises:

a layer (210) of water-absorbing material; and

an insulating layer (220) on at least one surface of the water absorbing material layer (210).

5. The battery box body as claimed in claim 4, wherein the water-absorbing layer (200) comprises two insulating layers (220), the two insulating layers (220) are connected at the side edges to form a containing cavity, and the water-absorbing material layer (210) is positioned in the containing cavity.

6. The battery case according to claim 4, wherein the insulating layer (220) has a plurality of ventilation holes (2201).

7. The battery case according to claim 4, wherein the insulating layer (220) comprises at least one of a plastic optical fiber film, a polyethylene film, a polyvinyl chloride film, a polyvinylidene fluoride film, a separator film, a polyimide film, a silica gel pad, a porous metal film, a porous ceramic film, and a molecular sieve film.

8. The battery box body according to claim 4, wherein the material of the water absorbing material layer (210) comprises at least one of calcium sulfate, calcium chloride, phosphorus pentoxide, silica gel, activated alumina and molecular sieve.

9. The battery box according to any one of claims 1 to 3, wherein the water-absorbing layer (200) comprises a first side portion (230), a second side portion (240), a third side portion (250), a fourth side portion (260), and a main body portion (270), the main body portion (270) has a first side edge (2701), a second side edge (2702), a third side edge (2703), and a fourth side edge (2704) connected in sequence, the first side portion (230) is foldably connected to the first side edge (2701), the second side portion (240) is foldably connected to the second side edge (2702), the third side portion (250) is foldably connected to the third side edge (2703), and the fourth side portion (260) is foldably connected to the fourth side edge (2704).

10. The battery case according to any one of claims 1 to 3, wherein the water-absorbing layer (200) has a thickness H1 greater than or equal to 1mm and less than or equal to 5 mm.

11. The battery box according to any of claims 1 to 3, characterized in that the housing (100) comprises a detachable cover (130).

12. A battery comprising a battery case according to any one of claims 1 to 11.

13. An electrical consumer, characterized in that the consumer comprises a battery according to claim 12 for providing electrical energy.

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