CN221508350U - Battery and electricity utilization device - Google Patents

Abstract

The application provides a battery and an electricity utilization device, which relate to the field of batteries, wherein the battery comprises: electric core and box, wherein, the box includes: the box body comprises a structural part, the structural part comprises an inner wall surrounding a first accommodating cavity, the first accommodating cavity is used for accommodating a battery cell of a battery, the structural part comprises a section bar with a cavity, the cavity forms a second accommodating cavity, the inner wall is provided with a through hole used for communicating the second accommodating cavity and the first accommodating cavity, the battery cell is accommodated in the first accommodating cavity, and the second accommodating cavity is isolated from the outer space of the box body; and the drying piece is at least accommodated in the second accommodating cavity, the drying agent is used for drying the first accommodating cavity, and the battery has stronger drying capacity. The application also provides an electric device applying the battery.

Description

Battery and electricity utilization device

Technical Field

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

Background

In the operation process of the battery, under the action of the temperature difference between the inside and the outside of the battery, condensed water can be generated in the battery, and if the condensed water in the battery is excessive, the insulation and the pressure resistance of the battery core can be influenced, so that the condensed water in the battery needs to be removed. The drying of the inside of box body is realized through setting up the steam in the drier absorption box body to the box body of relevant battery, and the drying capacity of this kind of battery is not enough.

Disclosure of utility model

The application provides a battery and an electricity utilization device, which are used for solving the technical problem of how to improve the drying capacity of the battery.

A first aspect of an embodiment of the present application provides a battery including: electric core and box, this box includes: the box body comprises a structural part, the structural part comprises an inner wall surrounding to form a first accommodating cavity, the structural part comprises a section bar with a cavity, the cavity forms a second accommodating cavity, the inner wall is provided with a through hole used for communicating the second accommodating cavity and the first accommodating cavity, the battery cell is accommodated in the first accommodating cavity, and the second accommodating cavity is isolated from the outer space of the box body; and the drying piece is at least accommodated in the second accommodating cavity and is used for drying the first accommodating cavity.

The embodiment of the application provides a battery, which comprises a battery core and a box body, wherein the box body comprises a box body and a drying piece, the box body comprises a structural member, the structural member comprises an inner wall surrounding to form a first accommodating cavity, the battery core is accommodated in the first accommodating cavity, the structural member comprises a section bar with a cavity, the cavity forms a second accommodating cavity, the inner wall is provided with a through hole communicated with the second accommodating cavity and the first accommodating cavity, meanwhile, the drying piece is accommodated in at least the second accommodating cavity, and water vapor in the first accommodating cavity can be absorbed through the through hole of the inner wall, so that the first accommodating cavity is dried. Through hold the drying member in the second from the area of structure holds the intracavity to can need not to set up the cavity that is used for holding the drying member in addition at the case body and make the drying member need not to stretch into first holding intracavity, reduce the space that first holding chamber to the restriction of the volume of drying member, and then can set up the drying member of bigger volume, improve the drying capacity of battery, moreover, can make the drying member can not reach the absorption saturated state in the life of battery through the drying member of bigger volume, thereby can need not to change the drying member.

In some embodiments, the ratio of the volume of the second receiving chamber to the volume of the first receiving chamber is greater than a preset threshold.

Through making the second hold the volume in chamber for the first volume that holds the chamber enough big, can make the second hold the chamber and can hold the drying member of enough big volume to make the volume of drying member can satisfy the drying demand to first chamber that holds, thereby improved the drying capacity of battery, can also make the drying member can not be in the absorption saturated state in the life of battery, thereby can need not to change the drying member in the life of battery.

In some embodiments, the number of structural members is a plurality, each structural member is fixedly connected, each structural member includes an inner wall surrounding a first receiving cavity, and each structural member has a second receiving cavity therein.

Through all having the second in each structure and hold the chamber, and make each structure all include at least one can hold the chamber adjacent first inner wall with first to make each structure all can hold the drying member, and can make the drying member all can be through the first through-hole of first inner wall absorption first hold the intracavity steam, and then further improved the drying capacity of battery.

In some embodiments, the structural member is provided with a plurality of second accommodating cavities arranged at intervals, the inner wall is provided with a plurality of through holes, and each through hole is respectively communicated with each second accommodating cavity and the first accommodating cavity.

Through setting up the second that a plurality of intervals set up in the structure holds the chamber, can carry out more make full use of to the cavity in the structure to hold the drier of bigger volume, thereby further improve the drying capacity of battery.

In some embodiments, the box body further comprises a bottom plate comprising a bottom wall forming the first receiving cavity, the structural member is fixedly connected to the bottom plate, and the inner wall is disposed around the bottom wall, the bottom plate being of solid construction.

Through the bottom plate that is used for bearing the electric core is solid structure, can make the battery have higher structural strength, make the battery bear the ability of electric core stronger, simultaneously, can also regard as the vehicle bottom plate with the bottom plate of battery, protect the electric core more reliably through solid structure's bottom plate, and exemplary, when the bottom plate of vehicle is scraped by the barrier of bottom surface and is rubbed, solid structure's bottom plate can protect the electric core more reliably, reduces the vehicle bottom plate and is scraped the possibility that electric core breaks down even take place thermal runaway when rubbing.

In some embodiments, the drying member fills the second receiving cavity.

Through making the drying member be full of the second and hold the chamber, make the drying member can not produce the displacement in the second holds the chamber, under the scene of being applied to the power battery of vehicle with the battery, make the drier be full of the second hold the chamber, can be in the travel of vehicle, make the drier can not produce the displacement in the second holds the chamber to produce the noise in the battery, also can not produce dynamic load in the battery, thereby influence the life of battery.

In some embodiments, the drying member is fixedly connected to an inner wall of the second receiving chamber.

Through making the fixed connection of the inner wall that drier and second held the chamber, make drier can not produce the displacement in the second holds the intracavity, under the scene of being applied to the power battery of vehicle with the battery, make the drier be full of the second and hold the chamber, can be in the travel of vehicle, make the drier can not produce the displacement in the second holds the chamber to produce the noise in the battery, also can not produce dynamic load in the battery, thereby influence the life of battery.

In some embodiments, the drying member comprises: the bracket is accommodated in the second accommodating cavity, a third accommodating cavity is formed in the bracket, and the bracket is provided with an opening for communicating the third accommodating cavity with the second accommodating cavity; a desiccant positioned in the third receiving chamber; wherein the opposite outer surfaces of the bracket in at least one direction abut against the inner wall of the second accommodation chamber.

The drying agent is contained by arranging the bracket, and the drying agent can be firstly filled into the bracket and then is integrally filled into the second containing cavity, so that the drying agent can be more conveniently filled into the second containing cavity. Simultaneously, through the inner wall butt of holding the chamber with the second in at least one direction, through the support with the second hold the inner wall butt of chamber of two surface opposite of support, can restrict the support in at least one direction and hold the intracavity motion, simultaneously, through the frictional force between support and the inner wall that holds the chamber with the second, can also restrict the support in the second and hold the intracavity motion in the direction that the support did not butt with the inner wall that holds the chamber.

In some embodiments, the shape of the outer surface of the stent is the same as the shape of the second receiving cavity and the size of the outer surface of the stent is the same as the size of the second receiving cavity.

The support can be abutted with the inner wall of the second accommodating cavity in all directions, so that the support can be limited to move in the second accommodating cavity through the abutting force between the support and the inner wall of the second accommodating cavity in all directions, and the movement of the support in the second accommodating cavity is limited more reliably.

In some embodiments, the box body further comprises a reinforcing member located in the first accommodating cavity, and two ends of the reinforcing member are fixedly connected with the inner wall respectively; the reinforcing piece is internally provided with a fourth accommodating cavity, the fourth accommodating cavity is internally provided with a drying piece, and the reinforcing piece is provided with an opening communicated with the fourth accommodating cavity and the first accommodating cavity.

Through setting up the reinforcement in first holding the intracavity, can utilize the fourth in the reinforcement to hold the chamber and hold the drying member in the first holding intracavity of drying member setting up in first holding intracavity, still can hold the intracavity and fourth and hold the intracavity through the second and hold the intracavity the drying member and absorb the first dry ability that holds the intracavity jointly to further improve the battery.

In some embodiments, the box body further comprises an expansion member fixedly connected to the structural member, and the expansion member comprises an inner wall surrounding the fifth accommodation chamber, the fifth accommodation chamber being located on at least one side of the first accommodation chamber in a direction perpendicular to a thickness direction of the first accommodation chamber; the expansion piece is internally provided with a sixth containing cavity, the inner wall of the expansion piece is provided with a through hole which is communicated with the sixth containing cavity and the fifth containing cavity, and the sixth containing cavity is internally provided with a drying piece.

Through the sixth holding chamber in the extension piece holds the drying part, makes the drying part can hold the steam in the chamber through the second through Kong Xishou fifth, and under the condition that the fifth holds the chamber and first holds the chamber 132 and does not keep apart, the drying part that the sixth held the intracavity also can realize the absorption to the steam in the first chamber 132 that holds to further improved the drying effect of battery.

A second aspect of embodiments of the present application provides an electrical device comprising a battery as provided by the embodiments of the first aspect above for providing electrical energy.

The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the accompanying drawings. In the drawings:

fig. 1 is a schematic structural diagram of a vehicle according to an embodiment of the present application;

Fig. 2 is a schematic structural diagram of a battery according to an embodiment of the present application;

Fig. 3 is a schematic structural diagram of a battery cell according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a case in a first battery according to an embodiment of the present application;

Fig. 5 is an assembly schematic diagram of a first structural member and a drying member in a battery according to an embodiment of the present application;

Fig. 6 is a schematic structural diagram of a case in a second battery according to an embodiment of the present application;

Fig. 7 is a schematic diagram illustrating an assembly of a second structural member and a drying member in a battery according to an embodiment of the present application;

Fig. 8 is a schematic structural diagram of a case in a third battery according to an embodiment of the present application;

Fig. 9 is an assembly schematic diagram of a third structural member and a drying member in a battery according to an embodiment of the present application;

Fig. 10 is an assembly schematic diagram of a fourth structural member and a drying member in a battery according to an embodiment of the present application;

Fig. 11 is an assembly schematic diagram of a fifth structural member and a drying member in a battery according to an embodiment of the present application;

fig. 12 is an assembly schematic diagram of a sixth structural member and a drying member in a battery according to an embodiment of the present application;

fig. 13 is a schematic structural view of a case in a fourth battery according to an embodiment of the present application;

Fig. 14 is an assembly schematic diagram of a reinforcing member and a drying member in a battery according to an embodiment of the present application;

fig. 15 is a schematic structural view of a case in a fifth battery according to an embodiment of the present application;

Fig. 16 is an assembly schematic diagram of an expansion member and a drying member in a battery according to an embodiment of the present application.

Reference numerals in the specific embodiments are as follows:

1000. A vehicle;

100. A battery; 200. a controller; 300. a motor; 10. a case; 11. a first portion; 12. a second portion; 13. a case body; 131. structural members; 1311. a first inner wall; 1312. a second accommodation chamber; 1313. a first through hole; 132. a first accommodation chamber; 133. a bottom plate; 14. a drying member; 141. a bracket; 1411. a third accommodation chamber; 1412. a first opening; 142. a drying agent; 143. and (3) sticking glue; 15. a reinforcing member; 151. a fourth accommodation chamber; 152. a second opening; 16. an expansion member; 161. a fifth accommodation chamber; 162. a second inner wall; 163. a sixth accommodation chamber; 164. a second through hole;

20. A battery cell; 21. a housing; 22. a cell body; 221. electrode terminals.

Detailed Description

Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and in the description of the drawings above are intended to cover non-exclusive inclusions.

In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

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

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

Currently, the application of power batteries is more widespread 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, electric automobiles, and the like, and a plurality of fields such as military equipment, aerospace, and the like. With the continuous expansion of the application field of the power battery, the market demand of the power battery is also continuously expanding.

The power battery is including the box that is used for holding the electric core, protects electric core and the electrical component of battery through the box, in power battery's course of working, needs to absorb the steam in the box through setting up the drying part in order to get rid of the comdenstion water in the box, and relevant battery box needs to set up extra cavity and holds the drying part, and the drying part is located the space in the box that needs occupy, and the restriction in the space in the box is received to the volume of drying part, leads to the drying ability to the space in the box limited, and needs to change the drying part.

Based on the above-mentioned problem, the applicant discovers through the intensive study to the battery that the battery box forms through the structure, set up the cavity in the structure and can make the box have higher structural strength when lighter in weight, this structure can be for example the section bar that has the cavity inside, can hold the desiccator through the cavity of structure self, thereby can need not to set up the cavity that is used for holding the desiccator in addition, but hold the problem that the desiccator probably causes the desiccator to be difficult to change through the cavity of structure self, the applicant discovers through further analysis that the cavity of structure has bigger volume and need not occupy the space in the box, can hold more desiccators through the cavity of structure, thereby can not reach the absorption saturation state at the life of battery in the messenger desiccator, namely need not to change the desiccator in the life of battery, in total, the applicant discovered through the study to the structural characteristics of structure that the cavity that forms the structure of box holds the desiccator, can reduce the restriction of the setting up the volume of interior space to the desiccator in addition when need not to set up the cavity that is used for holding the desiccator, thereby the desiccator, can not be in the condition that the desiccator can be more can be reached to the saturation state in the life of the absorption state, can not be reached in the absorption state in which can be reached to the absorption state in the life of the drying of the structure.

The embodiment of the application also provides a battery, which comprises the battery core, the box body, the anode, the cathode, the diaphragm, the insulating material and the electrode lugs, wherein the battery is used for storing or outputting electric energy, at least one battery core is accommodated in the box body, so that the battery core is protected through the box body, and the battery also comprises a copper plate, and the copper plate is used for connecting a plurality of battery cores in series and extending out of the box body, so that the electric energy of the battery core can be output.

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 car, a ship, a spacecraft and the like. Among them, the electric toy may include fixed or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric plane toys, and the like, and the spacecraft may include planes, rockets, space planes, and spacecraft, and the like.

For convenience of description, the following embodiment will take an electric device according to an embodiment of the present application as an example of the vehicle 1000.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1000 according to some embodiments of the application. The vehicle 1000 may be a fuel oil vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or a range-extended vehicle. The battery 100 is provided in the interior of the vehicle 1000, and the battery 100 may be provided at the bottom or the head or the tail of the vehicle 1000. The battery 100 may be used for power supply of the vehicle 1000, for example, the battery 100 may be used as an operating power source of the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, the controller 200 being configured to control the battery 100 to power the motor 300, for example, for operating power requirements during start-up, navigation, and travel of the vehicle 1000.

In some embodiments of the present application, battery 100 may not only serve as an operating power source for vehicle 1000, but may also serve as a driving power source for vehicle 1000, instead of or in part instead of fuel oil or natural gas, to provide driving power for vehicle 1000.

Referring to fig. 2, fig. 2 is an exploded view of a battery 100 according to some embodiments of the present application. The battery 100 includes a case 10 and a battery cell 20, and the battery cell 20 is accommodated in the case 10. The case 10 is used for providing an accommodating space for the battery cell 20, and the case 10 can adopt various structures. In some embodiments, the case 10 may include a first portion 11 and a second portion 12, the first portion 11 and the second portion 12 being mutually covered, and the first portion 11 and the second portion 12 together defining a receiving space for receiving the battery cell 20. The second portion 12 may be a hollow structure with one end opened, the first portion 11 may be a plate-shaped structure, and the first portion 11 covers the opening side of the second portion 12, so that the first portion 11 and the second portion 12 together define a containing space; the first portion 11 and the second portion 12 may be hollow structures each having an opening at one side, and the opening side of the first portion 11 is engaged with the opening side of the second portion 12. Of course, the case 10 formed by the first portion 11 and the second portion 12 may be of various shapes, such as a cylinder, a rectangular parallelepiped, or the like.

In the battery 100, the plurality of battery cells 20 may be connected in series, parallel or a series-parallel connection between the plurality of battery cells 20, and the series-parallel connection refers to that the plurality of battery cells 20 are connected in series or parallel. The multiple electric cores 20 can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the multiple electric cores 20 is accommodated in the box 10; of course, the battery 100 may also be a battery module formed by connecting a plurality of battery cells 20 in series or parallel or series-parallel connection, and then connecting a plurality of battery modules in series or parallel or series-parallel connection to form a whole and be accommodated in the case 10. The battery 100 may also include other structures, for example, the battery 100 may also include a bus bar member for making electrical connection between the plurality of battery cells 20. Wherein each cell 20 may be a secondary battery or a primary battery; but not limited to, lithium sulfur batteries, sodium ion batteries, or magnesium ion batteries. The battery cell 20 may be cylindrical, flat, rectangular, or otherwise shaped. Referring to fig. 3, fig. 3 is a schematic structural diagram of the battery cell 20, where the battery cell 20 includes a housing 21 and a battery cell body 22, the housing 21 is sleeved outside the battery cell body 22, a containing cavity is provided in the battery cell body 22, the containing cavity is used for containing electrolyte and positive and negative electrode plates, a diaphragm is typically disposed between the positive and negative electrode plates, and portions of the positive and negative electrode plates without active substances form tabs. The positive electrode tab and the negative electrode tab may be located at one end of the main body portion together or located at two ends of the main body portion respectively. During charge and discharge of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tab is connected to the electrode terminal 221 to form a current loop.

According to some embodiments of the present application, as shown in fig. 2, the present application provides a battery, the battery 100 including a case 10 and a battery cell 20, and the case 10 includes, in combination with fig. 4 and 5: the case body 13 and the drying member 14, the case body 13 includes a structural member 131, the structural member 131 includes an inner wall surrounding to form a first accommodation chamber 132, the first accommodation chamber 132 is for accommodating the battery cell 20 in fig. 2, and for convenience of explanation, the inner wall surrounding to form the structural member 131 to form the first accommodation chamber 132 is hereinafter referred to as a first inner wall 1311; the structural member 131 includes a profile having a cavity forming a second receiving cavity 1312, wherein the cavity of the profile is a self-contained cavity, i.e., the cavity is created when the profile is formed, not additionally processed after the profile is formed, it is understood that the second receiving cavity is formed by the self-contained cavity of the profile to receive the drying member, thereby forming the second receiving cavity for receiving the drying member without additional processing, and the first inner wall 1311 has a through hole for communicating the first receiving cavity 132 and the second receiving cavity 1312, hereinafter, the through hole communicating the first receiving cavity 132 and the second receiving cavity 1312 will be referred to as a first through hole 1313 for convenience of explanation.

It should be noted that, the first accommodating cavity 132 formed by surrounding the structural member 131 may have any shape capable of accommodating the battery cell, and the shape of the first accommodating cavity 132 may be a cuboid, and the shape of the first accommodating cavity 132 may be a cylinder. Alternatively, the structural member 131 may have an integrally formed structure of the second receiving chamber 1312; optionally, the structural members 131 are also in a split structure, that is, the structural members 131 have a plurality of structural members 131 that are spliced and fixed to form a box body structure, and at least one structural member 131 has a second accommodating cavity 1312 therein. The drying element 14 is at least accommodated in the second accommodating cavity 1312, the drying element 14 is used for enabling the first accommodating cavity 132 to be dried, namely, the drying element 14 in the second accommodating cavity 1312 can absorb water vapor in the first accommodating cavity 132 through the first through hole 1313, so that air in the first accommodating cavity 132 is kept dry, it can be understood that the drying element 14 is accommodated by the cavity of the structural member 131, and therefore, the accommodating cavity for accommodating the drying element 14 can be not required to be additionally arranged in the box body 13, the structure of the box body 13 is simplified, the manufacturing cost and manufacturing difficulty of the box body 13 are reduced, and because the drying element 14 is arranged in the structural member 131, the volume of the drying element 14 is not limited by the space in the box body 13 any more, in particular, the space in the box body 13 is the first accommodating cavity 132, and in the case that the box body 10 is applied to a battery, the first accommodating cavity 132 is used for accommodating the battery cell; furthermore, by providing a larger volume of the drying member 14, the drying member 14 can be kept from reaching an absorption saturation state during the service life of the battery, and replacement of the drying member 14 is unnecessary.

During the manufacturing process of the case 10, the structural member 131 has an opening, and the opening communicates with the second accommodating chamber 1312, through which the drying member 14 can be fitted into the second accommodating chamber 1312, and optionally, the opening is not adjacent to the first accommodating chamber 132; optionally, the opening of the structural member 131 is closed by a sealing member after the drying member 14 is inserted into the second receiving chamber 1312, so that the second receiving chamber 1312 is isolated from the external space of the cabinet 10, thereby reducing the influence of moisture in the air outside the cabinet 10 on the drying member 14.

The embodiment of the application provides a battery, which comprises a box body and a battery core, wherein the box body comprises a box body and a drying piece, the box body comprises a structural member, the structural member comprises an inner wall surrounding a first accommodating cavity, the structural member comprises a section bar with a cavity, the cavity forms a second accommodating cavity, the inner wall is provided with a through hole communicated with the second accommodating cavity and the first accommodating cavity, the battery core is accommodated in the first accommodating cavity, meanwhile, the drying piece is at least accommodated in the second accommodating cavity, and water vapor in the first accommodating cavity can be absorbed through the through hole of the inner wall, so that the first accommodating cavity is dried. Through hold the drying member in the second from the area of structure holds the intracavity to can need not to set up the cavity that is used for holding the drying member in addition at the case body and make the drying member need not to stretch into first holding intracavity, reduce the space that first holding chamber to the restriction of the volume of drying member, and then can set up the drying member of bigger volume, improve the drying capacity of battery, moreover, can make the drying member can not reach the absorption saturated state in the life of battery through the drying member of bigger volume, thereby can need not to change the drying member.

In some embodiments, with reference to fig. 4 and 5, the ratio of the volume of the second receiving chamber 1312 to the volume of the first receiving chamber 132 is greater than a preset threshold, which may be, for example, 0.015, and by making the volume of the second receiving chamber 1312 sufficiently large relative to the volume of the first receiving chamber 132, the second receiving chamber 1312 is able to receive a sufficiently large volume of the drying member 14, so that the volume of the drying member 14 is able to meet the drying requirement of the first receiving chamber 132, thereby improving the drying capacity of the battery 100, and also so that the drying member 14 is not in an absorbent saturation state during the service life of the battery, thereby eliminating the need for replacement of the drying member 14 during the service life of the battery.

In some embodiments, as shown in fig. 6, the number of the structural members 131 is plural, each structural member 131 is fixedly connected, each structural member 131 includes a first inner wall 1311 surrounding and forming the first accommodating cavity 132, it may be understood that the plurality of structural members 131 are spliced to form the box body 13 and each structural member 131 through the fixed connection, and each structural member 131 is used to surround and form the first accommodating cavity 132, so that each structural member 131 includes a first inner wall 1311 surrounding and forming the first accommodating cavity 132, and meanwhile, each structural member 131 has a second accommodating cavity 1312 therein, so that each structural member 131 can accommodate the drying member 14, that is, by having each structural member 131 each second accommodating cavity 1312 therein, each structural member 131 includes at least one first inner wall 1311 capable of being adjacent to the first accommodating cavity 132, so that each structural member 131 can accommodate the drying member 14, and so that each drying member 14 can absorb water vapor in the first accommodating cavity 132 through the first through hole 1313 of the first inner wall 1311, thereby further improving the drying capability of the battery 100.

In some embodiments, as shown in fig. 7, the structural member 131 has a plurality of second accommodating cavities 1312 disposed at intervals, and the first inner wall 1311 has a plurality of first through holes 1313, and each of the first through holes 1313 communicates with each of the second accommodating cavities 1312 and the first accommodating cavities 132, respectively, it may be understood that a plurality of second accommodating cavities 1312 disposed at intervals are formed in the structural member 131, and each of the second accommodating cavities 1312 can communicate with the first accommodating cavity 132 through the first through hole 1313, so that the drying member 14 can absorb moisture in the first accommodating cavity 132.

By providing a plurality of second receiving chambers 1312 provided at intervals in the structural member 131, the cavities in the structural member 131 can be more fully utilized to receive a larger volume of the drying member 14, thereby further improving the drying ability of the battery 100.

In some embodiments, as shown in fig. 8, the box body 13 further includes a bottom plate 133, the bottom plate 133 includes a bottom wall 1331 forming the first accommodating cavity 132, the structural member 131 is fixedly connected with the bottom plate 133, and the first inner wall 1311 of the structural member 131 is disposed around the bottom wall 1331, it may be understood that, after the structural member 131 is fixedly connected with the bottom plate 133, the first inner wall 1311 and the bottom wall 1331 enclose to form the first accommodating cavity 132, the first inner wall 1311 forms a side wall of the first accommodating cavity 132, and the bottom wall 1331 forms a bottom wall of the first accommodating cavity 132, so that the battery cells in the first accommodating cavity 132 are borne by the bottom wall, and meanwhile, the bottom plate 133 is of a solid structure, that is, the bottom plate 133 does not have a cavity structure therein.

Through the bottom plate 133 that is used for bearing the electric core is solid structure, can make battery 100 have higher structural strength, make battery 100 bear the ability of electric core stronger, simultaneously, can also regard as the vehicle bottom plate with the bottom plate of battery 100, protect the electric core more reliably through solid structure's bottom plate 133, exemplary, when the bottom plate of vehicle is scraped by the barrier of bottom surface, solid structure's bottom plate can protect the electric core more reliably, reduce the electric core and break down even take place the possibility of thermal runaway when being scraped by the vehicle bottom plate.

In some embodiments, as shown in fig. 9, the drying member 14 fills the second receiving cavity 1312, and it is understood that there is no gap between the drying member 14 and the inner surface of the second receiving cavity 1312, wherein the drying member 14 may be a powdery solid, a solid in a block shape, or a liquid capable of absorbing moisture.

By filling the second accommodating chamber 1312 with the drying member 14, the drying member 14 is prevented from being displaced in the second accommodating chamber 1312, and in the case where the battery 100 is applied to the power battery of the vehicle, the drying member 14 is filled with the second accommodating chamber 1312, so that the drying member 14 is prevented from being displaced in the second accommodating chamber 1312 during the running of the vehicle, noise is generated in the battery 100, and dynamic load is prevented from being generated in the battery 100, thereby affecting the service life of the battery 100.

In some embodiments, as shown in fig. 10, the drying member 14 is fixedly coupled to the inner wall surface of the second receiving chamber 1312, and illustratively, the drying member 14 is adhered to the inner wall of the second receiving chamber 1312 by the adhesive 143, thereby restricting the movement of the drying member 14 within the second receiving chamber 1312 by the adhesive force of the drying member 14 to the inner wall of the second receiving chamber 1312. Alternatively, the drying element 14 is not filled with the second accommodating chamber 1312, and movement of the drying element 14 in the second accommodating chamber 1312 is restricted by the fixed connection with the inner wall surface of the second accommodating chamber 1312; alternatively, the drying member 14 fills the second accommodating chamber 1312, and movement of the drying member 14 within the second accommodating chamber 1312 is restricted by abutment of the drying member 14 with the inner wall surface of the second accommodating chamber 1312, and by fixed connection of the drying member 14 with the inner wall surface of the second accommodating chamber 1312.

Through making the fixed connection of drying member 14 and the inner wall of second accommodation chamber 1312, make drying member 14 can not produce the displacement in second accommodation chamber 1312, under the scene of being applied to the power battery of vehicle with battery 100, make drying member 14 full of second accommodation chamber 1312, can be in the travel of vehicle, make drying member 14 can not produce the displacement in second accommodation chamber 1312 to produce the noise in battery 100, also can not produce dynamic load in battery 100, thereby influence battery 100's life.

In some embodiments, as shown in fig. 11, the drying member 14 includes a bracket 141 and a drying agent 142, the bracket 141 is accommodated in the second accommodating chamber 1312, the bracket 141 has a third accommodating chamber 1411 therein, and the bracket 141 has an opening communicating the third accommodating chamber 1411 and the second accommodating chamber 1312, hereinafter, for convenience of explanation, the opening communicating only the third accommodating chamber 1411 and the second accommodating chamber 1312 is referred to as a first opening 1412, the drying agent 142 is located in the third accommodating chamber 1411, it is understood that the drying agent 142 is accommodated in the third accommodating chamber 1411 through the first opening 1412, and then the bracket 141 accommodating the drying agent 142 is integrally accommodated in the first accommodating chamber 132, and the drying agent 142 in the third accommodating chamber 1411 can communicate with the first accommodating chamber 132 through the first opening 1412 and the first through hole 1313, thereby enabling the drying agent 142 to absorb moisture vapor in the first accommodating chamber 132.

By providing the bracket 141 to accommodate the desiccant 142, the desiccant 142 can be first loaded into the bracket 141 before the bracket 141 and the desiccant 142 are integrally loaded into the second accommodating chamber 1312, so that the desiccant 142 can be more conveniently loaded into the second accommodating chamber 1312.

Wherein, in at least one direction, two opposite outer surfaces of the bracket 141 are abutted with the inner wall of the second accommodating chamber 1312, and movement of the bracket 141 in the second accommodating chamber 1312 can be restricted in at least one direction by the abutment force of the bracket 141 with the inner wall of the second accommodating chamber 1312, and simultaneously, movement of the bracket 141 in the second accommodating chamber 1312 can also be restricted in a direction in which the bracket 141 is not abutted with the inner wall of the second accommodating chamber 1312 by the friction force between the bracket 141 and the inner wall of the second accommodating chamber 1312.

In some embodiments, as shown in fig. 12, the shape of the outer surface of the bracket 141 is the same as the shape of the second receiving chamber 1312, and the size of the outer surface of the bracket 141 is the same as the size of the second receiving chamber 1312, it is understood that the outer surface of the bracket 141 is fitted with the inner wall of the second receiving chamber 1312 in each direction, so that the outer surface of the bracket 141 is abutted with the inner wall of the second receiving chamber 1312 in each direction.

By allowing the holder 141 to abut against the inner wall of the second housing chamber 1312 in each direction, the movement of the holder 141 in the second housing chamber 1312 can be restricted by the abutment force of the holder 141 against the inner wall of the second housing chamber 1312 in each direction, and the movement of the holder 141 in the second housing chamber 1312 can be restricted more reliably.

In some embodiments, as shown in fig. 13, the case body 13 further includes a reinforcement member 15, the reinforcement member 15 is located in the first receiving cavity 132, and both ends of the reinforcement member 15 are fixedly connected with the first inner wall 1311, respectively, it may be understood that the reinforcement member 15 can support the inner wall of the first inner wall 1311 through the fixed connection of the reinforcement member 15 with the first inner wall 1311, thereby improving the structural strength of the battery 100.

Among them, as shown in fig. 14, the reinforcing member 15 has a fourth receiving chamber 151 therein, the fourth receiving chamber 151 receives the drying member 14, and the reinforcing member 15 has an opening communicating the fourth receiving chamber 151 and the first receiving chamber 132, and for convenience of explanation, the opening of the fourth receiving chamber 151 for communicating the fourth receiving chamber 151 and the first receiving chamber 132 will be referred to as a second opening 152 hereinafter. It can be understood that, by disposing the reinforcing member 15 in the first receiving chamber 132, the drying member 14 can be received by the fourth receiving chamber 151 in the reinforcing member 15 while improving the structural strength of the battery 100, and the moisture in the first receiving chamber 132 can be absorbed by the drying member 14 in the second receiving chamber 1312 and the fourth receiving chamber 151 together, thereby further improving the drying capability of the battery 100.

In some embodiments, as shown in fig. 15, the case body 13 further includes an extension member 16, where the extension member 16 is fixedly connected to the structural member 131, and the extension member 16 includes an inner wall surrounding and forming a fifth accommodating cavity 161, for convenience of description, hereinafter, the inner wall of the extension member 16 for surrounding and forming the fifth accommodating cavity 161 is referred to as a second inner wall 162, and the fifth accommodating cavity 161 is located at least one side of the first accommodating cavity 132 in a thickness direction perpendicular to the first accommodating cavity 132, it is understood that the extension member 16 surrounds and forms the fifth accommodating cavity 161 for accommodating an electrical element of a battery, such as a battery management system of a battery, a power distribution unit of a battery, or a charging module of a battery, so that an accommodating space for the drying member 14 can be provided without using a height space of the battery 100 by using a cavity of the structural member 131, and at the same time, the fifth accommodating cavity 161 for accommodating an electrical element of a battery is also provided at least one side of the first accommodating cavity 132 in a length direction or a width direction of the battery, which is further applicable to a chassis of a vehicle, and the size of the battery can be reduced in a height direction of the vehicle.

As shown in fig. 16, the extension member 16 has a sixth receiving chamber 163 therein, and the second inner wall 162 of the extension member 16 has a through hole communicating the sixth receiving chamber 163 and the fifth receiving chamber 161, and the sixth receiving chamber 163 accommodates therein the drying member 14, hereinafter, for convenience of explanation, the through hole communicating the sixth receiving chamber 163 and the fifth receiving chamber 161 is referred to as a second through hole 164, that is, the drying member 14 can absorb moisture in the fifth receiving chamber 161 through the second through hole 164 by receiving the drying member 14 in the sixth receiving chamber 163, and in the case that the fifth receiving chamber 161 and the first receiving chamber 132 are not isolated, the drying member 14 in the sixth receiving chamber 163 can also achieve absorption of moisture in the first receiving chamber 132, thereby further improving the drying effect of the battery 100.

According to some embodiments of the application, there is also provided an electrical device comprising a battery as described in any of the above aspects, and the battery is used to provide electrical energy to the electrical device.

The powered device may be any of the aforementioned devices or systems employing batteries.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application, and they should be included in the scope of the present application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict.

Claims (12)

1. A battery, the battery comprising:

The box body and the battery cell;

Wherein, the box includes:

The box body comprises a structural part, the structural part comprises an inner wall surrounding a first accommodating cavity, the structural part comprises a section bar with a cavity, the cavity forms a second accommodating cavity, the inner wall is provided with a through hole used for communicating the second accommodating cavity and the first accommodating cavity, the battery cell is accommodated in the first accommodating cavity, and the second accommodating cavity is isolated from the external space of the box body;

And the drying piece is at least accommodated in the second accommodating cavity and is used for drying the first accommodating cavity.

2. The battery of claim 1, wherein a ratio of a volume of the second receiving cavity to a volume of the first receiving cavity is greater than a preset threshold, the preset threshold being 0.015.

3. The battery of claim 1 or 2, wherein the number of structural members is plural, each structural member is fixedly connected, each structural member includes an inner wall surrounding the first receiving chamber, and each structural member has the second receiving chamber therein.

4. The battery according to claim 1 or 2, wherein the structural member has a plurality of second accommodation cavities arranged at intervals therein, the inner wall has a plurality of through holes, and each through hole communicates with each second accommodation cavity and each first accommodation cavity, respectively.

5. The battery of claim 1, wherein the case body further comprises a bottom plate comprising a bottom wall forming the first receiving cavity, the structural member is fixedly connected to the bottom plate, and the inner wall is disposed around the bottom wall, the bottom plate being of solid construction.

6. The battery of claim 1, wherein the dry member fills the second receiving cavity.

7. The battery of claim 1 or 6, wherein the drying member is fixedly connected to an inner wall of the second receiving chamber.

8. The battery of claim 1, wherein the drying member comprises:

The bracket is accommodated in the second accommodating cavity, a third accommodating cavity is formed in the bracket, and the bracket is provided with an opening which is communicated with the third accommodating cavity and the second accommodating cavity;

A desiccant positioned within the third receiving chamber;

Wherein opposite outer surfaces of the bracket in at least one direction abut against an inner wall of the second accommodation chamber.

9. The battery of claim 8, wherein the outer surface of the bracket has the same shape as the second receiving cavity and the outer surface of the bracket has the same size as the second receiving cavity.

10. The battery according to claim 1, wherein the case body further includes a reinforcement member located in the first accommodation chamber, both ends of the reinforcement member being fixedly connected to the inner wall, respectively;

The drying device comprises a reinforcing piece, wherein a drying piece is arranged in the reinforcing piece, a fourth accommodating cavity is formed in the reinforcing piece, and the reinforcing piece is provided with an opening which is communicated with the fourth accommodating cavity and the first accommodating cavity.

11. The battery according to claim 1, wherein the case body further includes an expansion member fixedly connected to the structural member, and the expansion member includes an inner wall surrounding a fifth accommodation chamber formed on at least one side of the first accommodation chamber in a thickness direction perpendicular to the first accommodation chamber;

The expansion piece is internally provided with a sixth containing cavity, the inner wall of the expansion piece is provided with a through hole which is communicated with the sixth containing cavity and the fifth containing cavity, and the drying piece is contained in the sixth containing cavity.

12. An electrical device comprising a battery as claimed in any one of claims 1 to 11 for providing electrical energy.