CN221057560U - Box structure, battery and power consumption device - Google Patents

Abstract

The application relates to a box structure, a battery and an electric device, wherein the box structure comprises: the box body is provided with a containing cavity, and the first surface is provided with a first groove; the beam assembly is partially accommodated in the first groove, and a second groove is formed in the beam assembly positioned in the first groove; the first sealing piece is provided with a first sealing part and a second sealing part, the first sealing part is in sealing connection with the groove wall of the second groove, and the second sealing part is in sealing connection with the part of the beam assembly outside the first groove; and the fixing assembly sequentially penetrates through the first sealing piece, the beam assembly and the accommodating cavity. According to the application, the battery is fixedly mounted to the external structure through the fixing component, the beam component can improve the connection stability between the fixing component and the box body, the first sealing piece is in sealing fit with the beam component, and the sealing performance of the box body structure can be improved, so that the mounting stability and the sealing performance of the box body structure are both considered.

Description

Box structure, battery and power consumption device

Technical Field

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

Background

When the battery is used, the battery is required to be fixed on an electric device or other external structures, a middle mounting point is required to be arranged at the middle position of the battery in order to improve the installation stability of the battery, and the fixing piece is arranged on the battery in a penetrating manner and is fixedly installed on the electric device or other external structures through the middle mounting point.

However, the sealing performance of the middle mounting point on the battery is poor at present, which easily causes water inflow inside the battery and affects the reliability of the battery and the power utilization device.

Disclosure of utility model

Based on this, it is necessary to provide a box structure, a battery and an electric device, which are easy to cause water inflow inside the battery because of poor sealing performance of the middle mounting point on the current battery.

In a first aspect, the application provides a box structure, comprising a box body, a beam assembly, a first sealing member and a fixing assembly, wherein the box body is provided with a containing cavity, and a first groove is formed in a first surface of the box body; the beam assembly is partially accommodated in the first groove, and a second groove is formed in a part of the beam assembly positioned in the first groove; the first sealing piece is provided with a first sealing part and a second sealing part which are connected with each other, the first sealing part is configured to be inserted into the second groove and is in sealing connection with the groove wall of the second groove, and the second sealing part is configured to be in sealing connection with the part of the beam assembly, which is positioned outside the first groove; the fixed subassembly wears to establish first sealing member, roof beam subassembly and holds the chamber in proper order, and fixed subassembly is used for installing the case body to the external structure.

From this, through fixed subassembly with the case body install to outer structure such as power consumption device on, simultaneously, through the sealing fit between first sealing member and the roof beam subassembly, can improve the sealing performance of box structure to compromise the installation stability and the sealing performance of box structure.

In some embodiments, the beam assembly includes a first beam body and a second beam body accommodated in the first groove, the second Liang Tiyan first beam body is connected to opposite ends of the first beam body in a width direction, and encloses with the first beam body to form a second groove, and an opening direction of the second groove is consistent with an opening direction of the first groove.

Through the structure, the first beam body and the second beam body can be accommodated in the first groove, the limiting function on the beam assembly is achieved through the first groove, and the second groove can be formed by surrounding smoothly, so that sealing fit with the first sealing piece is achieved.

In some embodiments, the beam assembly further comprises a third beam body positioned outside the first groove, the third beam body is connected to an end of the second beam body facing away from the first beam body, and the third beam body extends in a direction parallel to the first surface.

From this, when first roof beam body and second Liang Tirong are arranged in first recess, the third roof beam body is located outside the first recess to laminate with first surface and set up, through welding or other connected mode, can be with sealing connection between third roof beam body and the first surface, thereby improve connection stability and the leakproofness between roof beam subassembly and the case body.

In some embodiments, the first seal portion is disposed intersecting the second seal portion, the first seal portion having a profile matching a shape of the second groove, the second seal portion being configured to be capable of conforming to and sealing with the third beam.

Through above-mentioned structure, can realize the double seal between first sealing member and the roof beam subassembly, wherein, be plane seal between second sealing portion and the third roof beam body, can effectively improve whole sealing stability.

In some embodiments, the box body includes an upper cover and a liner, the upper cover and the liner enclose to form a containing cavity, and a side surface of the liner facing away from the upper cover is a first surface.

The upper cover and the inner container are enclosed together to form the accommodating cavity, so that the battery monomer or other structures can be conveniently placed in the accommodating cavity, and the battery monomer in the accommodating cavity is protected through the upper cover and the inner container.

In some embodiments, the box structure further comprises a frame and a bottom guard plate, the frame is arranged around the box body, the bottom guard plate is connected with the frame, and the bottom guard plate is arranged towards the first surface;

wherein, fixed subassembly wears to establish end backplate, first sealing member, roof beam subassembly and holds the chamber in proper order.

Through setting up the frame for be connected between upper cover and the inner bag more stable, and sealing performance between the two is better. By arranging the bottom guard plate, the battery cell in the accommodating cavity can be well protected, and the impact force from the external environment can be borne, so that the structural strength of the box body structure is improved.

In some embodiments, the securing assembly includes a sleeve that sequentially passes through the bottom shield, the first seal, the beam assembly, and the receiving cavity, and a second seal that is sealingly disposed between the sleeve and the first seal.

Through the structure, the stable installation of the box body structure is realized, and meanwhile, the tightness between the sleeve and the first sealing piece can be improved.

In some embodiments, the tank body further comprises an expansion beam disposed within the receiving cavity, the securing assembly further comprises a third seal, the sleeve is disposed through the expansion beam, and the third seal is disposed between the sleeve and the expansion beam.

Thus, when the sleeve passes through the expansion beam, the third sealing element can realize sealing fit between the sleeve and the expansion beam, so that the sealing performance between the sleeve and the expansion beam is improved.

In some embodiments, the tank structure further comprises a fourth seal disposed sealingly between the expansion beam and the upper cover.

Through above-mentioned structure, can effectively improve the leakproofness of each position between fixed subassembly and case body, roof beam subassembly and the first sealing member to improve the whole leakproofness of box structure.

In a second aspect, the application further provides a battery, which comprises a battery monomer and the box structure, wherein the battery monomer is accommodated in the accommodating cavity of the box structure.

In a third aspect, the application also provides an electrical device comprising a battery as described above.

Above-mentioned box structure, battery and power consumption device, when the battery monomer is placed in holding the intracavity, assemble jointly with box structure and form the battery, can be through fixed subassembly with battery fixed mounting to power consumption device or other external structure this moment, in the installation, the roof beam subassembly can improve the connection stability between fixed subassembly and the case body, in addition, seal fit between first sealing member and the roof beam subassembly can improve the sealing performance of box structure to compromise box structure's installation stability and sealing performance.

Drawings

FIG. 1 is a schematic structural view of a vehicle according to one or more embodiments.

Fig. 2 is an exploded view of a battery according to one or more embodiments.

Fig. 3 is an exploded view of a battery cell according to one or more embodiments.

Fig. 4 is a schematic structural view of a case structure according to one or more embodiments.

Fig. 5 is an exploded view of a case structure in accordance with one or more embodiments.

Fig. 6 is a schematic view of a structure in which a first surface of a liner is disposed upward in a case structure according to one or more embodiments.

Fig. 7 is a schematic illustration of a first seal in a case structure according to one or more embodiments.

FIG. 8 is a schematic illustration of a first seal in a tank structure in cooperative connection with a beam assembly in accordance with one or more embodiments.

FIG. 9 is a schematic illustration of an exploded view of a first seal and beam assembly in a tank structure according to one or more embodiments.

FIG. 10 is a schematic cross-sectional view of a first seal and beam assembly in a tank structure according to one or more embodiments.

FIG. 11 is a partial cross-sectional view of a tank structure in accordance with one or more embodiments.

Reference numerals illustrate: 1000. a vehicle; 100. a battery; 200. a controller; 300. a motor; 10. a case; 20. a battery cell; 30. a box structure; 11. a first portion; 12. a second portion; 21. an end cap; 22. a housing; 23. a cell assembly; 31. a case body; 32. a beam assembly; 33. a first seal; 34. a fixing assembly; 35. a frame; 36. a bottom guard board; 311. a receiving chamber; 312. a first surface; 313. a first groove; 314. an upper cover; 315. an inner container; 316. an expansion beam; 321. a second groove; 322. a first beam body; 323. a second beam body; 324. a third beam body; 331. a first sealing part; 332. a second sealing part; 333. a connection hole; 341. a sleeve; 342. a second seal; 343. a third seal; 345. a fourth seal; a. in the width direction.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if any, these 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 used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

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 other fields. With the continuous expansion of the application field of the power battery, the market demand of the power battery is also continuously expanding.

The battery generally comprises a box structure and a battery cell, wherein the battery cell is placed in the box structure, and the battery cell can be protected through the box structure.

While the battery is in use, it needs to be fixedly mounted to an electrical device or other external structure, such as an electric vehicle. In the installation, in order to make the battery can be more stable, need set up the middle part and mount the point on the battery, set up the mount point in the intermediate position of battery promptly to wear to locate the middle part and mount the point with the mounting point, mutually support through the other mount points around middle part mount the point and the battery, make the battery can stably install on power consumption device or other external structure.

However, when the fixing member is assembled at the middle mounting point, it is necessary to pass through the battery in the height direction of the battery. At this time, if the sealing performance between the fixing piece and the battery is poor, water is easily introduced into the battery, so that the problems of insulation failure and the like are caused, and the safety and the service performance of the battery and the power utilization device are affected.

Based on the above consideration, in order to solve the problem that the sealing performance of the position of the middle mounting point on the current battery is poor, and water is easy to enter the battery, one or more embodiments of the present application provide a box structure, when a battery unit is placed in a containing cavity, the box structure is assembled together to form a battery, at this time, the battery can be fixedly mounted to an electric device or other external structures through a fixing component, in the mounting process, the beam component can improve the connection stability between the fixing component and the box body, in addition, the sealing performance of the box structure can be improved by sealing fit between the first sealing component and the beam component, so that the mounting stability and the sealing performance of the box structure are both considered.

The battery cell disclosed by the embodiment of the application can be used in electric devices such as vehicles, ships or aircrafts, but is not limited to the electric devices.

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, a 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 an extended range 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, 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 to provide an accommodating space for the battery cell 20, and the case 10 may have 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 overlapped with each other, the first portion 11 and the second portion 12 together defining an accommodating space for accommodating 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, wherein the series-parallel connection refers to that the plurality of battery cells 20 are connected in series or parallel. The plurality of battery cells 20 can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the plurality of battery cells 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 a plurality of battery modules are then connected in series or parallel or series-parallel connection to form a whole and are accommodated in the case 10. The battery 100 may further include other structures, for example, the battery 100 may further include a bus member for making electrical connection between the plurality of battery cells 20.

Wherein each battery 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 in the shape of a cylinder, a flat body, a rectangular parallelepiped, or other shapes, etc.

Referring to fig. 3, the battery cell 20 refers to the smallest unit constituting the battery. As shown in fig. 3, the battery cell 20 includes an end cap 21, a housing 22, a cell assembly 23, and other functional components.

The end cap 21 refers to a member that is covered at the opening of the case 22 to isolate 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. Optionally, the end cover 21 may be made of a material (such as an aluminum alloy) with a certain hardness and strength, so that the end cover 21 is not easy to deform when being extruded and collided, so that the battery cell 20 can have higher structural strength, and the safety performance can be improved. The end cap 21 may be provided with a functional part such as an electrode terminal or the like. The electrode terminals may be used to electrically connect with the cell assembly 23 for outputting or inputting electric power of the battery cell 20. In some embodiments, the end cap 21 may also 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. The material of the end cap 21 may be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not particularly limited in the embodiment of the present application. In some embodiments, insulation may also be provided on the inside of the end cap 21, which may be used to isolate electrical connection components within the housing 22 from the end cap 21 to reduce the risk of short circuits. By way of example, the insulation may be plastic, rubber, or the like.

The housing 22 is an assembly for mating with the end cap 21 to form the internal environment of the battery cell 20, where the internal environment may be formed to house the cell assembly 23, electrolyte, and other components. The case 22 and the end cap 21 may be separate members, and an opening may be provided in the case 22, and the interior of the battery cell 20 may be formed by covering the opening with the end cap 21 at the opening. It is also possible to integrate the end cap 21 and the housing 22, but specifically, the end cap 21 and the housing 22 may form a common connection surface before other components are put into the housing, and when it is necessary to encapsulate the inside of the housing 22, the end cap 21 is then put into place with the housing 22. The housing 22 may be of various 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 cell assembly 23. The material of the housing 22 may be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not particularly limited in the embodiment of the present application.

The cell assembly 23 is a component in which electrochemical reactions occur in the battery cells 20. One or more battery cell assemblies 23 may be contained within the housing 22. The cell 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 parts of the positive electrode plate and the negative electrode plate with active substances form the main body part of the battery cell assembly, and the parts of the positive electrode plate and the negative electrode plate without active substances form the electrode lugs respectively. 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 with the electrode terminal to form a current loop.

Referring to fig. 4, 5, 6 and 7, an embodiment of the present application provides a box structure 30, which includes a box body 31, a beam assembly 32, a first sealing member 33 and a fixing assembly 34, wherein the box body 31 has a receiving cavity 311, and a first surface 312 of the box body 31 is provided with a first groove 313. The part of beam assembly 32 is accommodated in the first groove 313, and the part of beam assembly 32 positioned in the first groove 313 is provided with the second groove 321. The first seal 33 has a first seal portion 331 and a second seal portion 332 connected to each other, the first seal portion 331 being configured to be capable of being inserted into the second groove 321 and being in sealing connection with a groove wall of the second groove 321, and the second seal portion 332 being configured to be capable of being in sealing connection with a portion of the beam assembly 32 located outside the first groove 313. The fixing assembly 34 sequentially penetrates the first sealing member 33, the beam assembly 32, and the receiving cavity 311, and the fixing assembly 34 is used for mounting the tank body 31 to an external structure.

It should be noted that, the case structure 30 provided by the present application may be used to accommodate the battery cell 20, that is, the battery cell 20 is placed in the accommodating cavity 311 of the case body 31, the battery cell 20 and the case structure 30 together form a battery 100 structure, and the case structure 30 can protect the battery cell 20. Of course, the case structure 30 may be used to accommodate other structures besides the battery cells 20, which will not be described herein.

The case body 31 refers to a main body portion of the case structure 30, the inside of which is hollow and formed with a receiving cavity 311 so as to place the battery cell 20 in the receiving cavity 311.

The beam assembly 32 is a member provided in a long strip-like structure and assembled to the tank body 31 to serve to reinforce the structural strength of the tank body 31. First, a part of the beam assembly 32 is accommodated in the first groove 313 so that the beam assembly 32 can be stably assembled with the tank body 31. Next, a second groove 321 is provided on a portion of the beam assembly 32 located in the first groove 313, and a sealing connection with the first seal 33 is achieved by the second groove 321. Thereby, the beam assembly 32 can not only improve the overall structural strength of the tank body 31, but also be in sealing engagement with the first seal 33.

Further, the first seal 33 is adapted for sealing engagement with the beam assembly 32. The first seal 33 has a first seal portion 331 and a second seal portion 332, and when assembled, the first seal portion 331 is inserted into the second groove 321, and the first seal portion 331 and the groove wall of the second groove 321 are connected in a sealing manner. And the second sealing portion 332 is located outside the second groove 321 and is in sealing connection with the portion of the beam assembly 32 located outside the first groove 313. Thereby, a sealed connection between the first seal 33 and the beam assembly 32 is achieved.

It can be appreciated that, in order to enable the first sealing portion 331 to be smoothly inserted into the second groove 321, the shape of the first sealing portion 331 is set to match the shape of the second groove 321, and when the first sealing portion 331 is inserted into the second groove 321, the edge of the first sealing portion 331 contacts with the groove wall of the second groove 321, so as to facilitate the sealing connection between the first sealing portion 331 and the groove wall of the second groove 321.

The fixing assembly 34 refers to a component that can be connected in sequence with the tank body 31, the beam assembly 32, and the first seal 33 to fixedly mount the tank body 31 to an external structure such as an electric device. Wherein, the second sealing portion 332 is provided with a connection hole 333, during the assembly process, a portion of the beam assembly 32 is first accommodated in the first groove 313, and then the first sealing portion 331 is inserted into the second groove 321, and at this time, the connection hole 333 on the second sealing portion 332 is opposite to the second groove 321.

In order to enable the fixing assembly 34 to pass through the beam assembly 32 and the box body 31 smoothly, through holes may be formed in corresponding positions of the beam assembly 32 and the box body 31. The fixing member 34 is sequentially passed through the connection hole 333 and the through holes of the beam member 32 and the tank body 31, that is, the fixing member 34 is sequentially passed through the first sealing member 33, the beam member 32 and the tank body 31, and through the housing cavity 311 of the tank body 31, and is passed through the first surface 312 of the housing cavity 311 to the other surface opposite to the first surface 312.

In this manner, the case body 31 can be mounted to an electric device or other external structure by the fixing assembly 34.

When the case structure 30 is used to house the battery cells 20 and constitute the battery 100, the battery 100 needs to be fixedly mounted to the power consumption device so that the battery 100 can be integrated with the power consumption device for convenient use. For example, when the battery 100 is applied to an electric vehicle, it is necessary to mount the battery 100 to the electric vehicle.

However, different electric devices have different application scenarios, such as electric vehicles, and the application scenario is very complex, which also makes the battery 100 easily affected by the external environment on the electric vehicles and unstable with the vehicle body, resulting in reduced reliability of the vehicle 1000.

Therefore, in the case structure 30 of the present application, the case body 31 is first mounted to an external structure such as an electric device by the fixing member 34, and at the same time, the sealing performance of the case structure 30 can be improved by the sealing engagement between the first sealing member 33 and the beam member 32, so that the mounting stability and sealing performance of the case structure 30 can be both achieved.

Referring to fig. 5, 6, 8, 9 and 10, in some embodiments, the beam assembly 32 includes a first beam 322 and a second beam 323 accommodated in the first groove 313, the second beam 323 is connected to opposite ends of the first beam 322 along a width direction a of the first beam 322, and encloses the first beam 322 to form a second groove 321, and an opening direction of the second groove 321 is consistent with an opening direction of the first groove 313.

Specifically, the structure formed by assembling the first beam body 322 and the second beam body 323 matches the shape of the first groove 313, so that the first beam body 322 and the second beam body 323 can be better accommodated in the first groove 313. When the first groove 313 is configured as a rectangular groove, the first beam body 322 is configured as a strip structure, the second beam bodies 323 are configured as two, and the two second beam bodies 323 are respectively connected to opposite ends of the first beam body 322 along the width direction a of the first beam body 322, and the two second beam bodies 323 are mutually perpendicular to the first beam body 322. Thus, the first beam 322 and the second beam 323 together enclose a rectangular structure with an opening, and can be matched with the first groove 313.

Further, when the first beam 322 and the second beam 323 are accommodated in the first groove 313, the opening of the rectangular structure formed by the first beam 322 and the second beam 323 is consistent with the opening direction of the first groove 313. That is, the first beam 322 is abutted against the groove bottom wall of the first groove 313, and the two second beams 323 are respectively abutted against the groove side walls on both sides of the first groove 313.

In addition, the first beam body 322 and the second beam body 323 may be formed by integrally forming, or may be formed by welding, and the above-mentioned methods may form a connection structure between the first beam body 322 and the second beam body 323, which is not described herein.

Through the above structure, the first beam body 322 and the second beam body 323 not only can be accommodated in the first groove 313, and the limiting effect on the beam assembly 32 is realized through the first groove 313, but also can be smoothly enclosed to form the second groove 321 so as to be in sealing fit with the first sealing element 33.

In some embodiments, beam assembly 32 further includes a third beam 324 positioned outside of first groove 313, third beam 324 being connected to an end of second beam 323 facing away from first beam 322, and third beam 324 extending in a direction parallel to first surface 312.

Specifically, the third beam 324 is formed by extending an end of the second beam 323 facing away from the first beam 322 toward a direction facing away from the second beam 323, and the third beam 324 is disposed parallel to the first surface 312.

Therefore, when the first beam 322 and the second beam 323 are accommodated in the first groove 313, the third beam 324 is located outside the first groove 313 and is attached to the first surface 312, and the third beam 324 and the first surface 312 can be connected in a sealing manner by welding or other connection manners, so as to improve the connection stability and the sealing between the beam assembly 32 and the box body 31.

In some embodiments, the first seal 331 is disposed intersecting the second seal 332, the first seal 331 having a profile matching the shape of the second groove 321, the second seal 332 being configured to snugly seal with the third beam 324.

Specifically, the second sealing portion 332 is disposed parallel to the first surface 312, the first sealing portion 331 is perpendicular to the first sealing portion 331, and the first sealing portion 331 is disposed in two, respectively connected at opposite ends of the second sealing portion 332. At the time of assembly, the two first sealing portions 331 are disposed at intervals along the extending direction of the second groove 321, and when the two first sealing portions 331 are inserted into the second groove 321, the second sealing portions 332 and the third beam 324 are parallel to each other and are bonded and sealed to each other. At this time, welding or other connection methods may be adopted to seal and fix the second sealing portion 332 to the third beam 324, and seal and connect the two first sealing portions 331 with the groove walls of the second groove 321, so as to realize dual sealing fit between the first sealing member 33 and the beam assembly 32, and improve sealing performance.

By the above structure, the double seal between the first seal 33 and the beam assembly 32 can be realized, wherein the second seal part 332 and the third beam body 324 are planar seals, and the overall seal stability can be effectively improved.

In some embodiments, the box body 31 includes an upper cover 314 and a liner 315, the upper cover 314 and the liner 315 enclose to form the accommodating cavity 311, and a side surface of the liner 315 facing away from the upper cover 314 is the first surface 312.

Specifically, the upper cover 314 and the inner container 315 each have an opening, and the openings of the two are opposite to each other and connected to form the accommodating cavity 311. Wherein the inner container 315 is located below, the upper cover 314 is located above, and a side surface of the inner container 315 facing away from the upper cover 314, i.e. a bottom surface of the inner container 315 is the first surface 312. The bottom surface of the liner 315 is provided with a first groove 313, a part of the beam assembly 32 is accommodated in the first groove 313, then the first sealing element 33 is arranged on the beam assembly 32 in a sealing manner, and the box body 31 is mounted on an external structure through the fixing assembly 34.

Further, the inner container 315 may be a composite inner container, and the composite inner container is in sealing connection with the upper cover 314, and encloses to form the accommodating cavity 311, so that the structural strength and the tightness of the accommodating cavity 311 can be improved, and better protection effect is achieved on the battery cells 20 placed therein.

The upper cover 314 and the inner container 315 enclose together to form the accommodating cavity 311, so that the battery cell 20 or other structures can be conveniently placed in the accommodating cavity 311, and the upper cover 314 and the inner container 315 play a role in protecting the battery cell 20 in the accommodating cavity 311.

In some embodiments, the box structure 30 further includes a frame 35 and a bottom guard plate 36, the frame 35 is disposed around the outer periphery of the box body 31, the bottom guard plate 36 is connected to the frame 35, and the bottom guard plate 36 is disposed toward the first surface 312. Wherein the fixing assembly 34 sequentially passes through the bottom guard plate 36, the first sealing member 33, the beam assembly 32 and the accommodating cavity 311.

Specifically, after the upper cover 314 and the inner container 315 are enclosed to form the accommodating cavity 311, the frame 35 is enclosed to the outer circumferences of the upper cover 314 and the inner container 315, and the frame 35 is hermetically connected to the upper cover 314 and the inner container 315, so that the upper cover 314 and the inner container 315 are formed into a unitary structure.

Further, the bottom guard plate 36 is provided at the bottom of the inner container 315, and the bottom guard plate 36 is attached to the frame 35 such that the bottom guard plate 36 faces the first surface 312, i.e., the bottom surface of the inner container 315.

Thus, when the case structure 30 is mounted to an electric vehicle or other electric devices, the bottom guard plate 36 can withstand external impact, thereby protecting the battery cells 20 in the accommodating chamber 311.

The fixing assembly 34 is sequentially passed through the bottom guard plate 36, the first sealing member 33, the beam assembly 32 and the case body 31 from the bottom guard plate 36 side such that the fixing assembly 34 penetrates the accommodating chamber 311 and protrudes from the upper cover 314, and then the case structure 30 is fixedly mounted to the electric device or other external structure by the fixing assembly 34.

Through setting up frame 35 for the connection between upper cover 314 and the inner bag 315 is more stable, and the sealing performance between the two is better. By providing the bottom guard plate 36, the battery cell 20 in the accommodating cavity 311 can be better protected by bearing the impact force from the external environment and improving the structural strength of the box structure 30.

Referring to fig. 4, 5 and 11, in some embodiments, the fixing assembly 34 includes a sleeve 341 and a second seal 342, the sleeve 341 sequentially penetrates the bottom guard 36, the first seal 33, the beam assembly 32 and the receiving cavity 311, and the second seal 342 is sealingly disposed between the sleeve 341 and the first seal 33.

Specifically, the second seal 342 may be provided as a gasket, and the sleeve 341 is first passed through the bottom guard plate 36, the first seal 33, the beam assembly 32, and the tank body 31 in this order, and the sleeve 341 is passed through the receiving cavity 311, and one end passing through the receiving cavity 311 can be connected to an electric device or other external structure, thereby fixedly mounting the tank structure 30 to the electric device or other external structure.

At the same time, the gasket is provided between the sleeve 341 and the first seal 33, so that the sealing performance between the sleeve 341 and the first seal 33 can be improved.

With this configuration, the sealing performance between the sleeve 341 and the first seal 33 can be improved while stable mounting of the case structure 30 is achieved.

In some embodiments, the tank body 31 further includes an expansion beam 316 disposed within the receiving cavity 311, the fixing assembly 34 further includes a third seal 343, the sleeve 341 is disposed through the expansion beam 316, and the third seal 343 is sealingly disposed between the sleeve 341 and the expansion beam 316.

Specifically, the expansion beam 316 is disposed between the upper cover 314 and the inner container 315, and the expansion beam 316 can play a supporting role, so that the battery cell 20 can be more stably accommodated in the accommodating cavity 311.

Wherein, set up the through-hole on the expansion beam 316 to set up the expansion beam 316 in the position with first recess 313 relatively, when sleeve 341 runs through holding chamber 311, can pass inner bag 315, expansion beam 316 and upper cover 314 in proper order, thereby realize the installation of box structure 30.

Further, the third seal 343 may be provided as an O-ring, which is sleeved on the outer circumference of the sleeve 341, and is provided between the sleeve 341 and the expansion beam 316 in a sealing manner, thereby improving the sealing performance between the sleeve 341 and the expansion beam 316.

Thus, when the sleeve 341 passes through the expansion beam 316, the third seal 343 can achieve a sealing engagement between the sleeve 341 and the expansion beam 316, thereby improving the sealing between the sleeve 341 and the expansion beam 316.

In some embodiments, the tank structure 30 further includes a fourth seal 345, the fourth seal 345 being sealingly disposed between the expansion beam 316 and the upper cover 314.

Specifically, the fourth sealing member 345 may be provided as a sealing ring, and the sealing ring is sealingly disposed between the expansion beam 316 and the upper cover 314 to improve sealability therebetween.

By the above structure, the sealability of each position between the fixing member 34 and the tank body 31, the beam member 32 and the first sealing member 33 can be effectively improved, thereby improving the overall sealability of the tank structure 30.

Based on the same concept as the case structure 30, the present application also provides a battery 100, including the battery cell 20 and the case structure 30 as described above, where the battery cell 20 is accommodated in the accommodating cavity 311 of the case structure 30.

Based on the same concept as the battery 100 described above, the present application also provides an electric device including the battery 100 described above.

According to one or more embodiments, the case body 31 is first formed by enclosing the upper cover 314 with the inner container 315, and the battery cell 20 is placed in the receiving cavity 311 of the case body 31. Then, the first beam 322 and the second beam 323 are accommodated in the first groove 313, and the third beam 324 is in sealing connection with the first surface 312.

Further, the first sealing member 33 is assembled into the second groove 321, wherein the first sealing portion 331 is inserted into the second groove 321, and the first sealing portion 331 is sealed with the groove wall of the second groove 321 by welding. The second sealing portion 332 is attached to the third beam 324, and the second sealing portion 332 and the third beam 324 are connected in a sealed manner by welding. Thereby, a sealing engagement between the first seal 33 and the beam assembly 32 is achieved.

Next, the frame 35 and the bottom guard plate 36 are sequentially assembled to the tank body 31, and then the sleeve 341 is passed through the bottom of the bottom guard plate 36, and the sleeve 341 is sequentially passed through the bottom guard plate 36, the first sealing member 33, the beam assembly 32, the liner 315, the expansion beam 316, and the upper cover 314, and finally passed out of the upper cover 314, so as to fix the tank structure 30 to the electric device or other external structure.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims (11)

1. A box structure, comprising:

The box body is provided with a containing cavity, and a first groove is formed in the first surface of the box body;

The beam assembly is partially accommodated in the first groove, and a second groove is formed in a part of the beam assembly positioned in the first groove;

A first seal having a first seal portion and a second seal portion connected to each other, the first seal portion being configured to be insertable into the second groove and to be sealingly connected with a groove wall of the second groove, the second seal portion being configured to be sealingly connected with a portion of the beam assembly located outside the first groove; and

The fixing component sequentially penetrates through the first sealing piece, the beam component and the containing cavity, and is used for installing the box body to an external structure.

2. The box structure according to claim 1, wherein the beam assembly comprises a first beam body and a second beam body accommodated in the first groove, the second beam body is connected to two opposite ends of the first beam body along the width direction of the first beam body, and forms the second groove by enclosing the first beam body, and the opening direction of the second groove is consistent with the opening direction of the first groove.

3. The tank structure of claim 2, wherein the beam assembly further comprises a third beam positioned outside the first groove, the third beam is connected to an end of the second beam facing away from the first beam, and the third beam extends in a direction parallel to the first surface.

4. A box structure according to claim 3, wherein the first sealing portion is arranged to intersect with the second sealing portion, the first sealing portion being contoured to match the shape of the second recess, the second sealing portion being configured to be able to seal against the third beam.

5. The case structure according to claim 1, wherein the case body includes an upper cover and an inner container, the upper cover and the inner container enclose to form the accommodating cavity, and a side surface of the inner container facing away from the upper cover is the first surface.

6. The case structure according to claim 5, further comprising a frame and a bottom guard plate, the frame surrounding the case body, the bottom guard plate being connected to the frame, and the bottom guard plate being disposed toward the first surface;

wherein, fixed subassembly wears to establish in proper order the backplate, first sealing member, beam assembly reaches hold the chamber.

7. The tank structure of claim 6, wherein the securing assembly comprises a sleeve and a second seal, the sleeve passing through the bottom guard plate, the first seal, the beam assembly, and the receiving cavity in sequence, the second seal being sealingly disposed between the sleeve and the first seal.

8. The tank structure of claim 7, wherein the tank body further comprises an expansion beam disposed within the receiving cavity, the securing assembly further comprises a third seal, the sleeve is disposed through the expansion beam, and the third seal is disposed between the sleeve and the expansion beam.

9. The tank structure of claim 8, further comprising a fourth seal disposed sealingly between the expansion beam and the upper cover.

10. A battery comprising a battery cell and a case structure according to any one of claims 1 to 9, wherein the battery cell is accommodated in an accommodation chamber of the case structure.

11. An electrical device comprising the battery of claim 10.