CN118020198A

CN118020198A - Box body assembly, battery and electric equipment

Info

Publication number: CN118020198A
Application number: CN202280059306.7A
Authority: CN
Inventors: 赵鹏博; 王勇; 王庆
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2022-05-23
Filing date: 2022-08-09
Publication date: 2024-05-10
Also published as: CN217334313U; WO2023226201A1

Abstract

The application discloses a box assembly, a battery and electric equipment. The tank assembly includes a tank, a support, and a thermal management component. The support piece is fixed in the box body. The thermal management component is arranged in the box body and used for accommodating a medium to adjust the temperature of the battery cell, and comprises a main pipeline and at least one branch pipeline, wherein the branch pipeline is communicated with the main pipeline, and the at least one branch pipeline is used for being in contact with the battery cell to adjust the temperature of the battery cell. Wherein, the trunk line and the support piece all extend along first direction, and the trunk line is supported by the support piece. The technical scheme provided by the application can improve the safety of the battery.

Description

Box body assembly, battery and electric equipment

Cross Reference to Related Applications

The present application claims priority from chinese patent application 202221229805.X entitled "case assembly, battery and powered device" filed on month 05, 2022, 23, the entire contents of which are incorporated herein by reference.

Technical Field

The application relates to the field of batteries, in particular to a battery storage device.

Background

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

In the development of battery technology, how to improve the safety of a battery is a technical problem that needs to be solved in battery technology.

Disclosure of Invention

The application provides a box assembly, a battery and electric equipment, which can improve the safety of the battery.

The application is realized by the following technical scheme:

The application provides a box assembly for accommodating a battery cell, comprising: a case; the supporting piece is fixed in the box body; the thermal management component is arranged in the box body and used for containing a medium to adjust the temperature of the battery cell, and comprises a main pipeline and at least one branch pipeline, wherein the branch pipeline is communicated with the main pipeline, and the at least one branch pipeline is used for being in contact with the battery cell to adjust the temperature of the battery cell; wherein the main pipe and the support member each extend in a first direction, the main pipe being supported by the support member.

According to the technical scheme, compared with the scheme that the fixing structures are arranged at the two ends of the main pipeline in the extending direction, the middle of the main pipeline is not supported, so that the thermal management component is deformed and collapsed due to the gravity of the battery monomer, and the thermal management component cannot be effectively attached to the battery monomer so as to be incapable of effectively adjusting the temperature of the battery monomer, the main pipeline can be effectively supported by arranging the supporting piece in the box body, the extending direction of the supporting piece is consistent with the extending direction of the main pipeline, the risk that the main pipeline is deformed and collapsed due to the gravity of the battery monomer is reduced, and the thermal management component can be attached to the battery monomer all the time so as to effectively adjust the temperature of the battery monomer, and therefore the battery has higher safety.

In some embodiments, the support is a rail, and the main pipe is inserted into the rail from one end of the rail along the first direction.

According to the technical scheme provided by the embodiment of the application, the supporting piece is the guide rail, and the main pipeline is assembled in the guide rail in an inserting mode, so that the thermal management component is efficiently assembled in the box body, and the assembly efficiency of the box body assembly is further improved.

In some embodiments, the rail is integrally formed with the housing.

According to the technical scheme provided by the embodiment of the application, the guide rail and the box body are integrally formed, so that the structural strength of the support piece and the box body can be ensured, the thermal management component is stably assembled in the box body, the risk that the temperature of the battery monomer cannot be regulated due to external force deformation of the thermal management component is further reduced, and the battery has higher safety.

In some embodiments, the guide rail comprises a bottom wall, a top wall, a first side wall and a second side wall, the top wall and the bottom wall are oppositely arranged along a second direction, the first side wall and the second side wall are oppositely arranged along a third direction, the bottom wall, the top wall, the first side wall and the second side wall enclose a cavity for accommodating the main pipeline, the top wall is provided with an opening for avoiding the branch pipeline, and the first direction, the second direction and the third direction are perpendicular to each other.

According to the technical scheme of the embodiment of the application, the main pipeline is limited by the first side wall and the second side wall in the third direction, and the main pipeline is limited by the top wall and the bottom wall in the second direction, so that the positions of the main pipeline in the second direction and the third direction can be limited through the bottom wall, the top wall, the first side wall and the second side wall, the heat management component is stably positioned in the cavity, and the heat management effect on the battery cell is ensured.

In some embodiments, the inner wall of the cavity is formed with a spacing bead, which is in contact with the outer wall of the main pipe.

According to the technical scheme, the limiting convex ribs protrude out of the cavity to be in contact with the outer wall of the main pipeline, when the thermal management component is assembled in the box body, the contact area between the main pipeline and the guide rail can be reduced, the friction force between the main pipeline and the guide rail is reduced, the main pipeline is convenient and quick to install, and the purpose of quickly assembling the thermal management component is achieved. Meanwhile, when the main pipeline and the guide rail are connected in a bonding mode (glue solution is injected between the main pipeline and the guide rail), the limit convex ribs can also enable the glue solution to uniformly act between the main pipeline and the guide rail so as to ensure the connection strength between the main pipeline and the guide rail.

In some embodiments, the outer wall of the main pipe and the guide rail are connected by an adhesive layer.

According to the technical scheme provided by the embodiment of the application, the adhesive layer is arranged between the main pipeline and the guide rail, so that the connection strength between the main pipeline and the guide rail can be improved, the thermal management component is stably positioned in the box body, the thermal management efficiency of the battery monomer is ensured, and the battery has higher safety.

In some embodiments, the thermal management component comprises two main pipes, and two ends of the branch pipes are respectively connected to the two main pipes; the support piece is provided with two, two support piece is along perpendicular to the second direction relative setting of first direction, support piece with the trunk line corresponds the setting, every trunk line is by corresponding support piece supports.

According to the technical scheme, the supporting pieces corresponding to the main pipeline in number are arranged, so that the supporting effect on the thermal management component is improved, the connection strength of the thermal management component and the box body is guaranteed, the risk that the thermal management component is deformed due to the gravity of the battery monomer is reduced, the thermal management component has an effective thermal management effect on the battery monomer, and the battery has higher safety.

In some embodiments, the thermal management component further comprises a stationary bracket having one end connected to the main conduit and the other end connected to the tank.

According to the technical scheme, the main pipeline is connected with the box body through the fixing support, so that the connection strength of the thermal management component and the box body can be improved, the thermal management component can be further ensured to effectively adjust the temperature of the battery monomer, and the battery has higher safety.

In some embodiments, the box comprises a frame, a bottom plate and a cross beam, wherein the frame is arranged around the bottom plate and connected with the bottom plate, the cross beam is arranged on the bottom plate, two ends of the cross beam are connected with the frame, the supporting piece is arranged on the frame, and the fixing support is connected with the cross beam.

According to the technical scheme of the embodiment of the application, the supporting piece is arranged on the frame, the fixing support is connected with the cross beam, so that the main pipeline of the thermal management component can be connected with the frame and the cross beam of the box body, and the connection strength of the thermal management component and the box body is further ensured, so that the thermal management component is prevented from being deformed due to the gravity of the battery monomers.

In a second aspect, the present disclosure also provides a battery comprising a case assembly according to any one of the above embodiments.

In a third aspect, the present application further provides an electric device, including a battery according to the foregoing embodiment, where the battery is used to provide electric 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

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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

FIG. 2 is an exploded view of a battery in some embodiments of the application;

FIG. 3 is a perspective exploded view of a tank assembly according to some embodiments of the present application;

FIG. 4 is a perspective view of a housing assembly according to some embodiments of the application;

FIG. 5 is a schematic view of a portion of a housing assembly according to some embodiments of the application;

FIG. 6 is an enlarged view at A in FIG. 5;

FIG. 7 is a schematic illustration of a cross-section of a portion of the structure and rails of a thermal management component in some embodiments of the application;

FIG. 8 is a schematic diagram of a cross-section of a rail in some embodiments of the application;

Fig. 9 is an enlarged view at B in fig. 3.

Icon: 20-a box assembly; 21-a box body; 210-a frame; 211-a cross beam; 212-front bezel; 213-rear frame; 214-side frames; 22-a support; 22 a-a guide rail; 22 b-limiting ribs; 220-a bottom wall; 221-top wall; 2210-opening; 222-a first sidewall; 223-a second sidewall; 23-thermal management components; 230-a main pipeline; 2300-media inlet; 2301-a media outlet; 231-branch pipe; 232-fixing the bracket; 233-a rivet; x-a first direction; y-a second direction; z-a third direction; 1000-vehicle; 200-a controller; 300-motor; 100-cell; 10-battery cell; 30-cover.

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 the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

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: there are three cases, a, B, a and B simultaneously. 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.

In the present application, the battery cell may include a lithium ion secondary battery, a lithium ion primary battery, a lithium sulfur battery, a sodium lithium ion battery, a sodium ion battery, a magnesium ion battery, or the like, which is not limited in the embodiment of the present application. The battery cell may have a rectangular parallelepiped shape or other shapes, etc., and the embodiment of the present application is not limited thereto.

The battery cell comprises an electrode assembly and electrolyte, wherein the electrode assembly consists of a positive plate, a negative plate and a separation membrane. The battery cell mainly relies on metal ions to move between the positive and negative electrode plates to operate. The positive plate comprises a positive electrode current collector and a positive electrode active material layer, wherein the positive electrode active material layer is coated on the surface of the positive electrode current collector, the positive electrode current collector without the positive electrode active material layer protrudes out of the positive electrode current collector coated with the positive electrode active material layer, and the positive electrode current collector without the positive electrode active material layer is used as a positive electrode lug. Taking a lithium ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobaltate, lithium iron phosphate, ternary lithium, lithium manganate or the like. The negative electrode sheet comprises a negative electrode current collector and a negative electrode active material layer, wherein the negative electrode active material layer is coated on the surface of the negative electrode current collector, the negative electrode current collector without the negative electrode active material layer protrudes out of the negative electrode current collector coated with the negative electrode active material layer, and the negative electrode current collector without the negative electrode active material layer is used as a negative electrode tab. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon, silicon, or the like. In order to ensure that the high current is passed without fusing, the number of positive electrode lugs is multiple and stacked together, and the number of negative electrode lugs is multiple and stacked together. The material of the separator may be PP (polypropylene) or PE (polyethylene).

Reference to a battery in accordance with an embodiment of the present application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in the present application may include a battery module or a battery pack, or the like.

The battery also comprises a box body and a cover body, one or more battery monomers are arranged inside the box body, and the cover body covers the opening of the box body, so that the one or more battery monomers are positioned in a closed space, the battery monomers are protected, and the battery monomers are prevented from being influenced by external objects.

The development of battery technology is taking into consideration various design factors such as energy density, cycle life, discharge capacity, charge-discharge rate and other performance parameters, and the safety of the battery. For example, thermal runaway of the battery can cause the battery to burn and explode, seriously affecting the safety of the battery. Thermal runaway is caused by the fact that the heat generation rate of the battery cells is much higher than the heat dissipation rate, and a large amount of heat is accumulated and not dissipated in time.

To improve the safety of the battery, a thermal management component is also typically included in the battery. The thermal management component is arranged in the box body and forms a box body assembly with the box body. The thermal management component is used for accommodating a medium to regulate the temperature of the battery unit so as to ensure that the battery is in a proper temperature range and ensure higher safety. The medium may be a fluid (liquid) or a gas, the temperature regulation means heating or cooling the plurality of battery cells, and the fluid may be referred to as a heat exchange medium. Alternatively, the fluid may be circulated to achieve better temperature regulation. Alternatively, the fluid may be water, a mixture of water and ethylene glycol, or air, etc. For example, in the case of cooling or cooling the battery cells, the thermal management component is used to contain a cooling fluid to lower the temperature of the plurality of battery cells, and at this time, the thermal management component may also be referred to as a cooling component, a cooling system, a cooling plate, or the like, and the fluid contained therein may also be referred to as a cooling medium or cooling fluid, and more specifically, may be referred to as a cooling liquid or cooling gas. When the fluid contained in the thermal management component is cooling water, the thermal management component may also be referred to as a water-cooled plate, which contacts the cell layers, and can be used to reduce the temperature of the cells to avoid thermal runaway of the cells. In general, a thermal management component comprises a main conduit, which may also be referred to as a collecting conduit, which acts to collect a medium, and at least one branch conduit through which the medium enters or exits.

However, in general, the battery often suffers from thermal runaway because the thermal management components are not able to effectively regulate the cell temperature. The inventor finds that the existing heat management component is assembled on the box body in a manner that two ends of the extending direction of the main pipe are respectively connected with the box body through a fixing structure, and the middle part of the main pipe is suspended and not supported by any structure, so when the battery monomer is arranged on the heat management component, the middle part of the main pipe is not supported, and the heat management component is deformed by the gravity of the battery monomer, so that the heat management component cannot be effectively attached to the battery monomer to effectively adjust the temperature of the battery monomer, and the safety of the battery is further affected.

In view of this, in order to avoid the thermal management component from deforming due to the gravity of the battery cell and improve the safety of the battery, the inventor has conducted intensive studies to provide a box assembly, in which a support member is disposed in the box, and the support member and the main pipe of the thermal management component extend along the first direction, so that the main pipe can be supported by the support member at the location of the extension direction thereof, thereby reducing the risk that the thermal management component is deformed by the gravity of the battery cell.

Because the support piece and the thermal management component extend along the first direction, the part of the thermal management component in the extending direction can be supported by the support piece, so that compared with the scheme that the fixing structures are only arranged at the two ends of the main pipeline in the extending direction, and the middle part of the main pipeline is not supported, the deformation and collapse of the thermal management component caused by the gravity of the battery monomer can be avoided, the thermal management component is ensured to be always contacted with the battery monomer, and further the battery has higher safety.

The technical scheme described by the embodiment of the application is suitable for the battery and the electric equipment using the battery.

The electric equipment can be vehicles, mobile phones, portable equipment, notebook computers, ships, spacecrafts, electric toys, electric tools and the like. The vehicle can be a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or an extended range automobile and the like; spacecraft including airplanes, rockets, space planes, spacecraft, and the like; the electric toy includes fixed or mobile electric toys, such as a game machine, an electric car toy, an electric ship toy, and an electric airplane toy; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railroad power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete shakers, and electric planers, among others. The embodiment of the application does not limit the electric equipment in particular.

For convenience of explanation, the following embodiments take electric equipment as an example of a vehicle.

Fig. 1 is a schematic view of a vehicle according to some embodiments of the application.

The controller 200, the motor 300, and the battery 100 may be provided inside the vehicle 1000, and the controller 200 is used to control the battery 100 to supply power to the motor 300. For example, the battery 100 may be provided at the bottom or the head or tail of the vehicle 1000. Battery 100 may be used for power supply to a vehicle, for example, battery 100 may be used as an operating power source for vehicle 1000, for circuitry of vehicle 1000, for example, for start-up, navigation, and operational power requirements of vehicle 1000. In another embodiment 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 according to some embodiments of the present application.

The battery includes a battery cell 10, a case assembly 20, and a cover 30. The case assembly 20 includes a case 21 and a thermal management member 23, the battery cell 10 is received in the case 21, the thermal management member 23 is disposed in the case 21, and the thermal management member 23 contacts the bottom wall of the battery cell 10 to support the battery cell 10. The thermal management member 23 serves to accommodate a medium, which may be a medium that adjusts the temperature of the battery cells 10, such as a cooling air flow, a cooling liquid, or the like. The case 21 is configured to provide an accommodating space for the battery cell 10, the battery cell 10 is disposed inside the case 21 through an opening of the case 21, and the cover 30 covers the opening of the case 21 to enable the battery cell 10 to be in the closed space. In the battery, the battery cell 10 may be one or a plurality of battery cells.

Referring to fig. 3-6, fig. 3 is a perspective exploded view of the case assembly 20 according to some embodiments of the present application, fig. 4 is a perspective view of the case assembly 20 according to some embodiments of the present application, fig. 5 is a schematic view of a portion of the case assembly 20 according to some embodiments of the present application, and fig. 6 is an enlarged view at a in fig. 5. Some embodiments of the present application provide a tank assembly 20, the tank assembly 20 including a tank 21, a support 22, and a thermal management member 23. The support 22 is fixed in the case 21. The thermal management member 23 is disposed in the case 21 for accommodating a medium to adjust the temperature of the battery cell, and the thermal management member 23 includes a main pipe 230 and at least one branch pipe 231, the branch pipe 231 being in communication with the main pipe 230, the at least one branch pipe 231 being for contacting the battery cell to adjust the temperature of the battery cell. Wherein, the main pipe 230 and the support member 22 each extend along a first direction x, and the main pipe 230 is supported by the support member 22.

The case 21 is a portion that can accommodate the heat management member 23 and the battery cells. The thermal management component 23 includes a main conduit 230 and at least one branch conduit 231. Typically, the main pipe 230 is at an edge of the thermal management component 23 for introducing external media to cause the media to be transported towards the branch pipe 231 or for extracting media within the branch pipe 231 for discharge to the thermal management component 23. At least one branch pipe 231 in the thermal management member 23 contacts the battery cell to achieve heat exchange with the battery cell, thereby adjusting the temperature of the battery cell. In some embodiments, along the extending direction of the main pipe 230, i.e. the first direction x, a plurality of branch pipes 231 are arranged side by side and are all communicated with the main pipe 230, and the plurality of branch pipes 231 are contacted and flattened to the battery cells.

The support member 22 extends along the first direction x, and can support the main pipe 230, and ensure that the middle portion of the main pipe 230 can be supported by the support member 22.

Set up support piece 22 in box 21, and support piece 22 extends along first direction x, can play the supporting role to the trunk line 230 of thermal management part 23 effectively, reduces thermal management part 23 because of battery monomer gravity deformation collapse's risk, and then can make thermal management part 23 laminate in battery monomer all the time to adjust battery monomer's temperature effectively, and then make the battery have higher security.

According to some embodiments of the present application, referring to fig. 5 and 6, the support member 22 is a guide rail 22a, and the main pipe 230 is inserted into the guide rail 22a along a first direction x from one end of the guide rail 22 a.

The support 22 is a guide rail 22a, on the one hand, the support 22 can support the main pipe 230, on the other hand, the support 22 has a guide cavity (i.e. the inside of the guide rail 22 a) extending along the first direction x, in which the main pipe 230 can be inserted to realize the assembly of the thermal management portion, and since the guide rail 22a itself has a guiding function, the main pipe 230 can correct its position when being inserted into the guide cavity, thereby ensuring the assembly precision of the thermal management member 23 relative to the support 22 and the case 21.

In some embodiments, the case 21 is of a split type structure, and the portion of the case 21 connected to the supporting member 22 may be assembled first, and after the thermal management device 23 is assembled, the remaining portion of the case 21 may be assembled. For example, the case 21 includes a frame 210, the frame 210 is formed of a plurality of wall portions, the supporting member 22 (the guide rail 22 a) is provided on one of the wall portions, and the plurality of wall portions may be connected to each other by welding, bonding, or the like after the thermal management member 23 is provided in the guide rail 22a by insertion.

According to the technical scheme of the embodiment of the application, the main pipeline 230 is assembled in the guide rail 22a in an inserting manner, so that the assembly efficiency and the assembly accuracy of thermal management can be improved, and the assembly efficiency of the box assembly 20 can be further improved.

In accordance with some embodiments of the present application, please refer to fig. 7, fig. 7 is a schematic diagram showing a portion of the structure of the thermal management structure 23 and a cross section of the guide rail 22a according to some embodiments of the present application. The guide rail 22a is integrally formed with the case 21.

In some embodiments, as shown in fig. 7, the guide rail 22a is a groove structure formed on the inner wall of the case 21, and may be integrally formed with the case 21 by extrusion or the like, and in this embodiment, the guide rail 22a is a part of the case 21, so that the case assembly 20 does not increase in volume due to the additional provision of the guide rail 22a or occupy the internal space of the case 21 due to the additional provision of the guide rail 22 a. In other embodiments, the guide rail 22a may be a structure independent of the case 21, and may be disposed on the inner wall of the case 21 by bonding, welding, or fixing with a fixing member.

According to the technical scheme provided by the embodiment of the application, the guide rail 22a and the box body 21 are integrally formed, so that the structural strength of the support piece 22 and the box body 21 can be ensured, the thermal management component 23 is stably assembled in the box body 21, the risk that the temperature of the battery unit cannot be regulated due to external force deformation of the thermal management component 23 is reduced, and the battery has higher safety.

In accordance with some embodiments of the present application, please refer to fig. 7 and 8, fig. 8 is a schematic diagram of a cross section of a rail 22a according to some embodiments of the present application. The guide rail 22a includes a bottom wall 220, a top wall 221, a first side wall 222 and a second side wall 223, the top wall 221 and the bottom wall 220 are oppositely arranged along a second direction y, the first side wall 222 and the second side wall 223 are oppositely arranged along a third direction z, the bottom wall 220, the top wall 221, the first side wall 222 and the second side wall 223 enclose a cavity for accommodating the main pipe 230, the top wall 221 is provided with an opening 2210 for avoiding the branch pipe 231, and the first direction x, the second direction y and the third direction z are perpendicular to each other.

As shown in fig. 7, the cross section of the main pipe 230 (the cross section perpendicular to the extending direction of the main pipe 230) is rectangular, the bottom wall 220, the top wall 221, the first side wall 222 and the second side wall 223 correspond to four faces of the main pipe 230, respectively, to support and limit the main pipe 230, and the cavity surrounded by the bottom wall 220, the top wall 221, the first side wall 222 and the second side wall 223 to accommodate the main pipe 230 may be a guiding cavity of the guide rail 22 a.

The first and second sidewalls 222 and 223 are oppositely disposed along a third direction z, which may be a thickness direction of the main pipe 230. The first sidewall 222 may abut against the lower surface of the main pipe 230, and support the main pipe 230. The second side wall 223 is used for abutting against the upper surface of the main pipe 230 to limit the displacement of the main pipe 230 in the third direction z, so as to ensure the stability of the thermal management component 23 in the box 21.

The top wall 221 and the bottom wall 220 are disposed opposite to each other along a second direction y, which may be a width direction of the main pipe 230 or one direction perpendicular to an extending direction and a thickness direction of the main pipe 230. In some embodiments, branch conduit 231 may extend along second direction y. Generally, the branch pipes 231 are disposed on an inner surface of the main pipe 230, and a surface of the main pipe 230 disposed opposite to the inner surface in the second direction y is an outer surface. The bottom wall 220 is used for abutting against the outer surface of the main pipe 230, the top wall 221 is used for abutting against the inner surface of the main pipe 230, and the displacement of the thermal management component 23 in the second direction y can be limited by the cooperation of the bottom wall 220 and the top wall 221, so that the stability of the thermal management component 23 in the box 21 is ensured. Meanwhile, since the main pipe 230 can be wrapped by the bottom wall 220, the top wall 221, the first side wall 222 and the second side wall 223, the main pipe 230 is prevented from being exposed to the outside, and the profile level of the tank assembly 20 can be improved, so that the appearance of the tank assembly 20 is flat.

As shown in fig. 7, the size of the branch conduit 231 in the third direction z is generally smaller than the size of the main conduit 230 in the third direction z. The top wall 221 is provided with an opening 2210 to enable the branch duct 231 to protrude from the opening 2210. Meanwhile, the opening 2210 extends along the first direction x so that the branch pipes 231 can be synchronously moved when the main pipe 230 is inserted into the guide rail 22 a.

According to the technical scheme of the embodiment of the application, in the third direction z, the main pipeline 230 is limited by the first side wall 222 and the second side wall 223, and in the second direction y, the main pipeline 230 is limited by the top wall 221 and the bottom wall 220, so that the positions of the main pipeline 230 in the second direction y and the third direction z can be limited by the bottom wall 220, the top wall 221, the first side wall 222 and the second side wall 223, the heat management component 23 is stably positioned in the cavity, and the heat management effect on the battery cells is ensured.

According to some embodiments of the present application, as shown in fig. 8, the inner wall of the cavity is formed with a limit rib 22b, and the limit rib 22b contacts with the outer wall of the main pipe 230.

The limiting rib 22b is a structure protruding from the inner wall of the cavity, and extends along the first direction x, and is used for abutting against the outer wall of the main pipe 230. Referring to fig. 8, limit ribs 22b are formed on the bottom wall 220, the top wall 221, the first side wall 222, and the second side wall 223 to abut against four sides of the main pipe 230.

In some embodiments, the number of the limiting ribs 22b on the bottom wall 220, the top wall 221, the first side wall 222 and the second side wall 223 is plural, that is, each face of the main pipe 230 is abutted by the plural limiting ribs 22 b. In the present application, the number of the limit ribs 22b is not limited, and the number of the limit ribs 22b on the bottom wall 220, the top wall 221, the first side wall 222, and the second side wall 223 is one, two, or three, respectively.

The spacing bead 22b protrudes in the inside of cavity in order to contact with the outer wall of trunk line 230, when thermal management component 23 assembles in box 21, can reduce the area of contact of trunk line 230 and guide rail 22a, reduces the frictional force between trunk line 230 and the guide rail 22a for main line 230 installs light swiftly, reaches thermal management component 23 rapid Assembly's purpose. Meanwhile, when the main pipe 230 is connected with the guide rail 22a by adopting a bonding mode (glue solution is injected between the main pipe 230 and the guide rail 22 a), the limit ribs 22b can also enable the glue solution to uniformly act between the main pipe 230 and the guide rail 22a so as to ensure the connection strength between the main pipe 230 and the guide rail 22 a.

In some embodiments according to the present application, the outer wall of main pipe 230 and rail 22a are connected by an adhesive layer (not shown).

By adhesive layer connection, it is meant that an adhesive layer is provided between the outer wall of main duct 230 and the inner wall of rail 22a, the adhesive layer acting as an adhesive to connect main duct 230 and rail 22 a. In some embodiments, glue is injected between the main pipe 230 and the guide rail 22a through a glue injection process, and after the glue is cured, an adhesive layer is formed, so as to achieve adhesion between the main pipe 230 and the guide rail 22 a.

According to the technical scheme provided by the embodiment of the application, the adhesive layer is arranged between the main pipeline 230 and the guide rail 22a, so that the connection strength between the main pipeline 230 and the guide rail 22a can be improved, the thermal management component 23 is stably positioned in the box body 21, the thermal management efficiency of the battery monomer is ensured, and the battery has higher safety.

According to some embodiments of the present application, as shown in fig. 3, the thermal management component 23 includes two main pipes 230, and two ends of the branch pipe 231 are connected to the two main pipes 230, respectively; the support members 22 are provided in two, the two support members 22 are oppositely disposed along a second direction y perpendicular to the first direction x, the support members 22 are disposed corresponding to the main pipes 230, and each main pipe 230 is supported by the corresponding support member 22.

One of the two main pipes 230 for pooling external medium to lead to the branch pipe 231, as in fig. 3, wherein one main pipe 230 has a medium inlet 2300 for medium to enter the thermal management component 23; the other of the two main pipes 230 is for collecting the medium in all the branch pipes 231 to be discharged outside the heat management part 23, as shown in fig. 3, wherein one main pipe 230 has a medium outlet 2301 for discharging the medium. In general, the thermal management component 23 may include a plurality of branch pipes 231, the plurality of branch pipes 231 extending in the second direction y in which two main pipes 230 are disposed opposite to each other, and the plurality of branch pipes 231 disposed between the two main pipes 230 and communicating with the two main pipes 230.

The supporting members 22 are disposed corresponding to the main pipes 230, that is, two supporting members 22 are disposed in the case 21, and the two supporting members 22 are disposed opposite to each other along the second direction y to respectively support the main pipes 230 corresponding to each other.

According to the technical scheme provided by the embodiment of the application, the supporting parts 22 corresponding to the main pipeline 230 are arranged to improve the supporting effect on the thermal management component 23, reduce the risk of deformation of the thermal management component 23 due to the gravity of the battery cell, enable the thermal management component 23 to perform an effective thermal management function on the battery cell, and further enable the battery to have higher safety.

Referring to fig. 6 and 9, fig. 9 is an enlarged view of fig. 3B, and the thermal management component 23 further includes a fixing bracket 232, one end of the fixing bracket 232 is connected to the main pipe 230, and the other end of the fixing bracket 232 is connected to the case 21.

The fixing bracket 232 is a component for connecting the main pipe 230 and the box 21, and is used for improving the connection strength of the thermal management component 23 and the box 21 and reducing the risk of deformation and collapse of the thermal management component 23 due to the gravity of the battery cell.

In some embodiments, referring to fig. 9, the fixing bracket 232 includes an L-shape with a vertical section connected to the main pipe 230, which may be connected to the main pipe 230 by welding, bonding, and a horizontal section of the fixing bracket 232 is formed with a through hole through which a screw or rivet (such as rivet 233 shown in fig. 6) passes so that the horizontal section of the fixing bracket 232 is connected to the case 21.

Through setting up the fixed bolster 232 to be connected trunk line 230 and box 21, can improve the joint strength of thermal management part 23 and box 21, and then guarantee that thermal management part 23 can adjust the free temperature of battery effectively, make the battery have higher security.

According to some embodiments of the application, please refer to fig. 4-6. The case 21 includes a frame 210, a base plate (not shown) and a beam 211, the frame 210 is disposed around and coupled to the base plate, the beam 211 is disposed on the base plate, both ends of the beam 211 are coupled to the frame 210, the supporting member 22 is disposed at the frame 210, and the fixing bracket 232 is coupled to the beam 211.

The frame 210 includes a plurality of wall parts connected to each other to enclose an accommodating space capable of accommodating the battery cells and the thermal management member 23. The bottom wall 220 is disposed at the bottom of the frame 210 and is used for supporting a plurality of wall portions. The cross member 211 is a member disposed in the receiving space, and both ends thereof are connected to two opposite wall portions of the frame 210, and generally, the extending direction of the cross member 211 is the extending direction of the branch pipe 231, or the extending direction of the cross member 211 is perpendicular to the first direction x, and the cross member 211 serves to improve the structural strength of the case 21.

The support 22 is disposed on the frame 210, that is, the support 22 is disposed on one of the walls of the frame 210, and the wall extends along the first direction x. The fixing bracket 232 is connected to the beam 211, meaning that the fixing bracket 232 connects the main pipe 230 and the beam 211 to each other.

According to the technical scheme of the embodiment of the application, the supporting piece 22 is arranged on the frame 210, the fixing support 232 is connected with the cross beam 211, so that the main pipeline 230 of the thermal management component 23 can be connected with the frame 210 and the cross beam 211 of the box body 21, and the connection strength of the thermal management component 23 and the box body 21 is further ensured, so that the thermal management component 23 is prevented from being deformed due to the gravity of the battery cells.

In some embodiments, as shown in fig. 3-5, the frame 210 includes a front bezel 212, a rear bezel 213, and two side bezels 214, the front bezel 212 and the rear bezel 213 being disposed opposite each other in the first direction x, and the two side bezels 214 being disposed opposite each other in the second direction y. The two supporting members 22 (guide rails 22 a) in the case assembly 20 are respectively disposed on the two side frames 214, and when the two main pipes 230 of the thermal management component 23 are respectively inserted into the corresponding supporting members 22, the front frame 212 and the rear frame 213 are welded to the two side frames 214.

According to some embodiments of the present application, the present application also provides a battery including the case assembly 20 described in the above embodiments. In some embodiments, the battery further comprises a plurality of battery cells disposed inside the housing 21 of the housing assembly 20, and the thermal management component 23 acts to enable temperature regulation by the thermal management component 23.

According to some embodiments of the present application, there is further provided an electric device including the battery described in the above embodiments, where the battery is used to provide electric energy.

The present application also provides a tank assembly 20 according to some embodiments of the present application, referring to fig. 3-9, the tank assembly 20 includes a tank 21, a support 22, and a thermal management member 23. The case assembly 20 is for accommodating the battery cells. The case 21 includes a frame 210 and a beam 211, the frame 210 includes two side frames 214 disposed opposite to each other in the second direction y, and the side frames 214 extend in the first direction x. The support 22 and the side frame 214 are integrally formed, and the support 22 is a guide rail 22a formed on the inner wall of the side frame 214, and the guide rail 22a is formed on the inner wall of the side frame 214 and extends along the first direction x to penetrate through the groove structure at the end of the side frame 214.

The thermal management component 23 includes two main pipes 230 disposed opposite to each other in the second direction y and extending in the first direction x, and a plurality of branch pipes 231 disposed between the two main pipes 230 and extending in the second direction y, respectively. The medium enters the thermal management component 23 from one of the main pipes 230, flows through the plurality of branch pipes 231 to exchange heat with the battery cells, thereby adjusting the temperature of the battery cells, and the heat-exchanged medium is collected in the other main pipe 230 and discharged.

The main pipes 230 are in one-to-one correspondence with the guide rails 22a, and when the thermal management component 23 is assembled, the main pipes 230 of the thermal management component 23 are aligned with the respective corresponding guide rails 22a, and inserted into the guide rails 22a along the first direction x, thereby completing the assembly of the thermal management component 23. Wherein the rail 22a includes a bottom wall 220, a top wall 221, a first side wall 222, and a second side wall 223. The top wall 221 and the bottom wall 220 are disposed opposite to each other in the second direction y for restricting displacement of the main pipe 230 in the second direction y. The first side wall 222 and the second side wall 223 are disposed opposite to each other along the third direction z for restricting displacement of the main pipe 230 in the third direction z. The top wall 221 is provided with an opening 2210 that bypasses the branch pipe 231 so that the branch pipe 231 can be penetrated out through the opening 2210. The first direction x, the second direction y and the third direction z are perpendicular to each other. In order to improve the assembly efficiency of the thermal management component 23, the inner wall of the guide rail 22a is formed with a limiting rib 22b, and the limiting rib 22b contacts with the outer wall of the main pipe 230, so as to reduce the contact area between the main pipe 230 and the guide rail 22a, and further reduce the friction between the guide rail 22a and the main pipe 230. To improve the connection strength of the guide rail 22a and the main pipe 230, adhesion may be performed between the guide rail 22a and the main pipe 230. To improve the connection strength of the thermal management component 23 to the tank 21, the main pipe 230 may also be connected to the cross beam 211 of the tank 21 through a fixing bracket 232.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

A housing assembly for containing a battery cell, comprising:

A case;

the supporting piece is fixed in the box body;

The thermal management component is arranged in the box body and used for containing a medium to adjust the temperature of the battery cell, and comprises a main pipeline and at least one branch pipeline, wherein the branch pipeline is communicated with the main pipeline, and the at least one branch pipeline is used for being in contact with the battery cell to adjust the temperature of the battery cell;

Wherein the main pipe and the support member each extend in a first direction, the main pipe being supported by the support member.
The cabinet assembly of claim 1, wherein,

The support piece is a guide rail, and the main pipeline is inserted into the guide rail along the first direction from one end of the guide rail.
The cabinet assembly of claim 2, wherein,

The guide rail and the box body are integrally formed.
A tank assembly as claimed in claim 2 or 3, wherein,

The guide rail comprises a bottom wall, a top wall, a first side wall and a second side wall, wherein the top wall and the bottom wall are oppositely arranged along a second direction, the first side wall and the second side wall are oppositely arranged along a third direction, the bottom wall, the top wall, the first side wall and the second side wall enclose a cavity for accommodating the main pipeline, the top wall is provided with an opening for avoiding the branch pipeline, and the first direction, the second direction and the third direction are perpendicular to each other.
The cabinet assembly of claim 4, wherein,

The inner wall of the cavity is provided with a limiting convex rib, and the limiting convex rib is contacted with the outer wall of the main pipeline.
The tank assembly of any one of claims 2 to 5, wherein,

The outer wall of the main pipeline is connected with the guide rail through an adhesive layer.
The tank assembly of any one of claims 1 to 6, wherein,

The heat management component comprises two main pipelines, and two ends of each branch pipeline are respectively connected with the two main pipelines;

The support piece is provided with two, two support piece is along perpendicular to the second direction relative setting of first direction, support piece with the trunk line corresponds the setting, every trunk line is by corresponding support piece supports.
The tank assembly of any one of claims 1 to 7, wherein,

The thermal management component further comprises a fixing support, one end of the fixing support is connected with the main pipeline, and the other end of the fixing support is connected with the box body.
The cabinet assembly of claim 8, wherein,

The box comprises a frame, a bottom plate and a cross beam, wherein the frame is arranged around the bottom plate and connected with the bottom plate, the cross beam is arranged on the bottom plate, two ends of the cross beam are connected with the frame, the supporting piece is arranged on the frame, and the fixing support is connected with the cross beam.
A battery comprising the case assembly according to any one of claims 1 to 9.
A powered device comprising the battery of claim 10 for providing electrical energy.