WO2023226201A1 - Ensemble boîte, batterie et dispositif électrique - Google Patents

Ensemble boîte, batterie et dispositif électrique Download PDF

Info

Publication number
WO2023226201A1
WO2023226201A1 PCT/CN2022/111211 CN2022111211W WO2023226201A1 WO 2023226201 A1 WO2023226201 A1 WO 2023226201A1 CN 2022111211 W CN2022111211 W CN 2022111211W WO 2023226201 A1 WO2023226201 A1 WO 2023226201A1
Authority
WO
WIPO (PCT)
Prior art keywords
main pipe
box
thermal management
battery
management component
Prior art date
Application number
PCT/CN2022/111211
Other languages
English (en)
Chinese (zh)
Inventor
赵鹏博
王勇
王庆
Original Assignee
宁德时代新能源科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to CN202280059306.7A priority Critical patent/CN118020198A/zh
Publication of WO2023226201A1 publication Critical patent/WO2023226201A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the field of batteries, and specifically to a battery storage device.
  • Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy conservation and environmental protection.
  • battery technology is an important factor related to their development.
  • This application provides a box assembly, a battery and electrical equipment, which can improve the safety of the battery.
  • the present application provides a box assembly for accommodating battery cells, including: a box; a support member fixed in the box; and a thermal management component disposed in the box for accommodating a medium to adjust the The temperature of the battery cell.
  • the thermal management component includes a main pipe and at least one branch pipe.
  • the branch pipe is connected to the main pipe.
  • the at least one branch pipe is used to contact the battery cell to adjust the temperature of the battery cell.
  • the technical solution of the embodiment of the present application only provides fixed structures at both ends of the main pipe in the extension direction, and the middle part of the main pipe is not supported, so that the thermal management component deforms and collapses due to the gravity of the battery cell, resulting in the thermal management component being unable to
  • this solution can effectively support the main pipe by setting a support member in the box, and the extension direction of the support member is consistent with the extension direction of the main pipe. , reducing the risk of the main pipe deforming and collapsing due to the gravity of the battery cell, thereby enabling the thermal management component to always fit the battery cell to effectively regulate the temperature of the battery cell, thereby making the battery highly safe.
  • the support member is a guide rail
  • the main pipe is inserted into the guide rail from one end of the guide rail along the first direction.
  • the support member is a guide rail
  • the main pipe is assembled in the guide rail through insertion, so that the thermal management components are efficiently assembled in the box, thereby improving the assembly efficiency of the box components.
  • the guide rail is integrally formed with the box body.
  • the guide rail and the box are integrally formed, which can ensure the structural strength of the support and the box, allowing the thermal management components to be stably assembled in the box, thereby reducing the inability of the thermal management components to adjust the battery due to external force deformation.
  • the risk of cell temperature makes the battery highly safe.
  • the guide rail includes 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 the second direction, and the first side wall and the first side wall
  • the second side walls are arranged oppositely along the third direction, the bottom wall, the top wall, the first side wall and the second side wall form a cavity for accommodating the main pipe, and the top wall
  • An opening is provided to avoid the branch pipe, and the first direction, the second direction and the third direction are vertical in pairs.
  • the technical solution of the embodiment of the present application is that in the third direction, the main pipe is limited by the first side wall and the second side wall, and in the second direction, the main pipe is limited by the top wall and the bottom wall, Therefore, through the bottom wall, the top wall, the first side wall and the second side wall, the position of the main pipe in the second direction and the third direction can be restricted, so that the thermal management component is stably located in the cavity, ensuring the protection of the battery cells. Thermal management effect.
  • the inner wall of the cavity forms a limiting rib, and the limiting rib is in contact with the outer wall of the main pipe.
  • the limiting rib protrudes from the inside of the cavity to contact the outer wall of the main pipe.
  • the contact area between the main pipe and the guide rail can be reduced.
  • the friction between the main pipe and the guide rail is reduced, making the installation of the main pipe light and fast, achieving the purpose of rapid assembly of thermal management components.
  • the limiting ribs can also allow the glue to act evenly between the main pipe and the guide rail to ensure that The strength of the connection between the main pipe and the guide rail.
  • the outer wall of the main pipe and the guide rail are connected through an adhesive layer.
  • an adhesive layer is provided between the main pipe and the guide rail, which can improve the connection strength between the main pipe and the guide rail, so that the thermal management component can be stably placed in the box to ensure that the battery cells are protected. Thermal management efficiency makes the battery safer.
  • the thermal management component includes two main pipes, and both ends of the branch pipes are respectively connected to the two main pipes; there are two support members, and two of the supports are provided.
  • the members are arranged oppositely along a second direction perpendicular to the first direction, the support members are arranged corresponding to the main pipes, and each of the main pipes is supported by the corresponding support member.
  • the technical solution of the embodiment of the present application improves the support effect of the thermal management components by providing supports corresponding to the number of main pipes, ensuring the connection strength between the thermal management components and the box, and reducing the thermal management components due to the impact of the battery cells.
  • the risk of deformation due to gravity allows the thermal management component to effectively manage the heat of the battery cells, thereby making the battery highly safe.
  • the thermal management component further includes a fixed bracket, one end of the fixed bracket is connected to the main pipe, and the other end of the fixed bracket is connected to the box.
  • the technical solution of the embodiment of the present application provides a fixed bracket to connect the main pipe and the box, which can improve the connection strength between the thermal management component and the box, thereby ensuring that the thermal management component can effectively adjust the temperature of the battery cell.
  • the battery has higher safety.
  • the box includes a frame, a bottom plate and a cross beam.
  • the frame is provided around the bottom plate and connected to the bottom plate.
  • the cross beam is provided on the bottom plate. Both ends of the cross beam Connected to the frame, the support member is provided on the frame, and the fixed bracket is connected to the cross beam.
  • the support member is provided on the frame, and the fixed bracket is connected to the cross beam, so that the main pipe of the thermal management component can be connected to the frame and cross beam of the box, thereby ensuring the connection strength between the thermal management component and the box.
  • this application also provides a battery, including the box assembly described in any one of the above embodiments.
  • the present application also provides an electrical device, including the battery described in the above embodiment, where the battery is used to provide electrical energy.
  • Figure 1 is a schematic structural diagram of a vehicle in some embodiments of the present application.
  • Figure 2 is an exploded view of a battery in some embodiments of the present application.
  • Figure 3 is a three-dimensional exploded view of the box assembly in some embodiments of the present application.
  • Figure 4 is a perspective view of a box assembly in some embodiments of the present application.
  • Figure 5 is a partial structural schematic diagram of the box assembly in some embodiments of the present application.
  • Figure 6 is an enlarged view of point A in Figure 5;
  • Figure 7 is a schematic diagram of a cross-section of a partial structure of a thermal management component and a guide rail in some embodiments of the present application;
  • Figure 8 is a schematic diagram of a cross-section of a guide rail in some embodiments of the present application.
  • Figure 9 is an enlarged view of point B in Figure 3.
  • Icon 20-box component; 21-box; 210-frame; 211-beam; 212-front frame; 213-rear frame; 214-side frame; 22-support; 22a-guide rail; 22b-limiting protrusion Rib; 220-bottom wall; 221-top wall; 2210-opening; 222-first side wall; 223-second side wall; 23-thermal management component; 230-main pipe; 2300-medium inlet; 2301-medium outlet ; 231-branch pipe; 232-fixed bracket; 233-rivet; x-first direction; y-second direction; z-third direction; 1000-vehicle; 200-controller; 300-motor; 100-battery; 10-battery cell; 30-cover.
  • an embodiment means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application.
  • the appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.
  • multiple refers to more than two (including two).
  • multiple groups refers to two or more groups (including two groups), and “multiple pieces” refers to It is more than two pieces (including two pieces).
  • the battery cells may include lithium ion secondary batteries, lithium ion primary batteries, lithium-sulfur batteries, sodium lithium ion batteries, sodium ion batteries or magnesium ion batteries, etc., which are not limited in the embodiments of this application.
  • the battery cell may be in a rectangular parallelepiped or other shape, and the embodiments of the present application are not limited to this.
  • the battery cell includes an electrode assembly and an electrolyte.
  • the electrode assembly consists of a positive electrode sheet, a negative electrode sheet and a separator. Battery cells mainly rely on the movement of metal ions between the positive and negative electrodes to work.
  • the positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer.
  • the positive electrode active material layer is coated on the surface of the positive electrode current collector.
  • the positive electrode current collector that is not coated with the positive electrode active material layer protrudes from the positive electrode current collector that is coated with the positive electrode active material layer. , the positive electrode current collector without coating the positive electrode active material layer is used as the positive electrode tab.
  • the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganate, etc.
  • the negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer.
  • the negative electrode active material layer is coated on the surface of the negative electrode current collector.
  • the negative electrode current collector that is not coated with the negative electrode active material layer protrudes from the negative electrode current collector that is coated with the negative electrode active material layer.
  • the negative electrode current collector that is not coated with the negative electrode active material layer is used as the negative electrode tab.
  • the material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon.
  • the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together.
  • the material of the isolation film can be PP (polypropylene, polypropylene) or PE (polyethylene, polyethylene), etc.
  • the battery mentioned in the embodiments of this application refers to a single physical module including one or more battery cells to provide higher voltage and capacity.
  • the battery mentioned in this application may include a battery module or a battery pack.
  • the battery also includes a box and a cover.
  • One or more battery cells are arranged inside the box.
  • the cover covers the opening of the box so that the one or more battery cells are in a closed space.
  • the body plays a protective role to prevent the battery cells from being affected by external objects.
  • battery thermal runaway can cause the battery to burn or explode, seriously affecting the safety of the battery.
  • Thermal runaway is caused by the fact that the heat generation rate of the battery cell is much higher than the heat dissipation rate, and a large amount of heat accumulates and is not dissipated in time.
  • batteries generally include thermal management components.
  • the thermal management component is installed in the box and forms a box assembly with the box.
  • Thermal management components are used to accommodate media to regulate the temperature of battery cells so that the battery is within a suitable temperature range to ensure high safety.
  • the medium here can be a fluid (liquid) or a gas. Regulating temperature refers to heating or cooling multiple battery cells.
  • the fluid can be called a heat exchange medium.
  • the fluid can be circulated to achieve better temperature regulation.
  • the fluid may be water, a mixture of water and ethylene glycol, or air.
  • the thermal management component is used to contain cooling fluid to lower the temperature of multiple battery cells.
  • the thermal management component may also be called a cooling component, a cooling system or a cooling system.
  • the fluid contained therein may also be called cooling medium or cooling fluid, and more specifically, may be called cooling liquid or cooling gas.
  • the thermal management component can also be called a water-cooling plate.
  • the water-cooling plate contacts the battery cell layer and can be used to reduce the temperature of the battery cells to prevent thermal runaway of the battery cells.
  • the thermal management component includes a main pipe and at least one branch pipe.
  • the main pipe can also be called a collecting pipe, which plays the role of collecting media. The medium enters through the main pipe or is discharged to the branch pipe.
  • thermal management components in general, batteries often suffer from thermal runaway due to the inability of thermal management components to effectively regulate cell temperature.
  • the inventor in order to prevent the thermal management components from being deformed due to the gravity of the battery cells and improve the safety of the battery, the inventor has conducted in-depth research and provided a box assembly by setting a support member in the box body, and the support member and the thermal management The main pipes of the component all extend along the first direction, so that the portion of the main pipe in its extension direction can be supported by the support member, thereby reducing the risk of the thermal management component being deformed by the gravity of the battery cell.
  • the thermal management component in its extension direction can be supported by the support member. Therefore, fixed structures are only provided at both ends of the main pipeline in the extension direction, while the middle part of the main pipeline For the unsupported solution, it can prevent the thermal management components from deforming and collapsing due to the gravity of the battery cells, ensuring that the thermal management components are always in contact with the battery cells, thus making the battery highly safe.
  • Power-consuming devices can be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys and power tools, etc.
  • the vehicle can be a new energy vehicle, which can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc.
  • Spacecraft includes airplanes, rockets, space shuttles, spaceships, etc.
  • Electric toys include fixed or mobile electric toys.
  • Toys such as game consoles, electric car toys, electric ship toys, electric airplane toys, etc.
  • power tools include metal cutting power tools, grinding power tools, assembly power tools and railway power tools, such as electric drills, electric grinders, Electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and planers to name a few.
  • the embodiments of this application impose no special restrictions on the above electrical equipment.
  • the following embodiments take the electrical equipment as a vehicle as an example.
  • Figure 1 is a schematic structural diagram of a vehicle in some embodiments of the present application.
  • a controller 200 , a motor 300 and a battery 100 may be disposed inside the vehicle 1000 .
  • the controller 200 is used to control the battery 100 to provide power to the motor 300 .
  • the battery 100 may be disposed at the bottom, front or rear of the vehicle 1000 .
  • the battery 100 can be used to power the vehicle.
  • the battery 100 can be used as an operating power source for the vehicle 1000 and for the circuit system of the vehicle 1000 , for example, to meet the power requirements for starting, navigation and operation of the vehicle 1000 .
  • the battery 100 can not only be used as an operating power source for the vehicle 1000 , but can also be used as a driving power source for the vehicle 1000 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000 .
  • Figure 2 is an exploded view of a battery in some embodiments of the present application.
  • the battery includes a battery cell 10 , a box assembly 20 and a cover 30 .
  • the box assembly 20 includes a box 21 and a thermal management component 23.
  • the battery cell 10 is accommodated in the box 21.
  • the thermal management component 23 is disposed in the box 21, and the thermal management component 23 is in contact with the bottom wall of the battery cell 10. , to support the battery cell 10 .
  • the thermal management component 23 is used to accommodate a medium, which may be a medium that regulates the temperature of the battery cell 10 , such as cooling air flow, cooling liquid, etc.
  • the box 21 is used to provide an accommodation space for the battery cells 10 .
  • the battery cells 10 are placed inside the box 21 through the opening of the box 21 .
  • the cover 30 covers the opening of the box 21 so that the battery cells 10 In a closed space. In a battery, there may be one or multiple battery cells 10 .
  • Figure 3 is a three-dimensional exploded view of the box assembly 20 in some embodiments of the present application.
  • Figure 4 is a three-dimensional view of the box assembly 20 in some embodiments of the present application.
  • Figure 5 is a three-dimensional exploded view of the box assembly 20 in some embodiments of the present application.
  • Figure 6 is an enlarged view of point A in Figure 5.
  • Some embodiments of the present application provide a box assembly 20 , which includes a box 21 , a support 22 and a thermal management component 23 .
  • the support member 22 is fixed in the box 21 .
  • the thermal management component 23 is provided in the box 21 and is used to accommodate media to adjust the temperature of the battery cells.
  • the thermal management component 23 includes a main pipe 230 and at least one branch pipe 231.
  • the branch pipe 231 is connected with the main pipe 230.
  • At least one branch pipe 231 is connected with the main pipe 230.
  • the pipe 231 is used to contact the battery cells to adjust the temperature of the battery cells.
  • the main pipe 230 and the support member 22 both extend along the first direction x, and the main pipe 230 is supported by the support member 22 .
  • the box 21 is a place that can accommodate the thermal management component 23 and the battery cells.
  • the thermal management component 23 includes a main pipe 230 and at least one branch pipe 231 .
  • the main pipe 230 is at the edge of the thermal management component 23 and is used to introduce external media so that the medium is transported to the branch pipe 231 , or to lead the medium in the branch pipe 231 to be discharged to the thermal management component 23 .
  • At least one branch pipe 231 in the thermal management component 23 is in contact with the battery cells to achieve heat exchange with the battery cells, thereby adjusting the temperature of the battery cells.
  • a plurality of branch pipes 231 are arranged side by side and are all connected with the main pipe 230 .
  • the plurality of branch pipes 231 are in contact with 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 part of the main pipe 230 can be supported by the support member 22 .
  • the support 22 is provided in the box 21 and extends along the first direction x, which can effectively support the main pipe 230 of the thermal management component 23 and reduce the deformation and collapse of the thermal management component 23 due to the gravity of the battery cells. risk, thereby enabling the thermal management component 23 to always adhere to the battery cell to effectively regulate the temperature of the battery cell, thereby making the battery have higher safety.
  • the support member 22 is a guide rail 22a, and the main pipe 230 is inserted into the guide rail 22a from one end of the guide rail 22a along the first direction x.
  • the support member 22 is a guide rail 22a. On the one hand, it means that the support member 22 can support the main pipe 230. On the other hand, the support member 22 has a guide cavity extending along the first direction x (ie, the inside of the guide rail 22a).
  • the main pipe 230 It can be inserted into the guide cavity to assemble the thermal management part, and since the guide rail 22a itself has a guiding function, the main pipe 230 can correct its position when inserted into the guide cavity, thereby ensuring that the thermal management component 23 is relatively The assembly accuracy of the support 22 and the box 21 is high.
  • the box 21 has a split structure.
  • the part of the box 21 connected to the support member 22 can be assembled first.
  • the thermal management component 23 is assembled, the remaining parts of the box 21 can be assembled.
  • the box 21 includes a frame 210.
  • the frame 210 is composed of multiple walls, and the support 22 (guide rail 22a) is provided on one of the walls.
  • the thermal management component 23 can first be installed in the guide rail 22a by insertion. , and then connect multiple wall parts to each other through methods such as welding and bonding.
  • the main pipe 230 is assembled in the guide rail 22a through insertion, which can improve the assembly efficiency of thermal management and the assembly accuracy, thereby improving the assembly efficiency of the box assembly 20.
  • FIG. 7 is a schematic diagram of a partial structure of the thermal management component 23 and a cross-section of the guide rail 22a in some embodiments of the present application.
  • the guide rail 22a and the box body 21 are integrally formed.
  • the guide rail 22a is a groove structure formed on the inner wall of the box 21, which can be integrally formed with the box 21 through extrusion or other methods.
  • the guide rail 22a is a groove structure formed on the inner wall of the box 21. Part of the structure is such that the volume of the box assembly 20 is not increased due to the additional guide rails 22a or the internal space of the box 21 is not occupied due to the additional guide rails 22a.
  • the guide rail 22a may be a structure independent of the box 21, and may be disposed on the inner wall of the box 21 by bonding, welding, or fixing with a fastener.
  • the guide rail 22a is integrally formed with the box 21, which can ensure the structural strength of the support 22 and the box 21, allowing the thermal management component 23 to be stably assembled in the box 21, thereby reducing the cost of the thermal management component. 23
  • the risk of being unable to adjust the battery cell temperature due to external force deformation makes the battery highly safe.
  • FIG. 8 is a schematic diagram of the cross section of the guide rail 22a in 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 arranged oppositely along the second direction y.
  • the first side wall 222 and the second side wall 223 are arranged along the second direction y.
  • the third direction z is arranged oppositely.
  • the bottom wall 220, the top wall 221, the first side wall 222 and the second side wall 223 form a cavity for accommodating the main pipe 230.
  • the top wall 221 is provided with an opening 2210 for avoiding the branch pipe 231.
  • One direction x, the second direction y and the third direction z are two perpendicular to each other.
  • the cross section of the main pipe 230 (the cross section perpendicular to the extension direction of the main pipe 230) is rectangular, and the bottom wall 220, the top wall 221, the first side wall 222 and the second side wall 223 respectively correspond to the main pipe 230.
  • the four sides of the bottom wall 220, the top wall 221, the first side wall 222 and the second side wall 223 form a cavity to accommodate the main pipe 230, which can be the guide rail 22a. guide cavity.
  • the first side wall 222 and the second side wall 223 are arranged oppositely along the third direction z, and the third direction z may be the thickness direction of the main pipe 230 .
  • the first side wall 222 can be in contact with the lower surface of the main pipe 230 to support the main pipe 230 .
  • the second side wall 223 is used to abut the upper surface of the main pipe 230 to limit the displacement of the main pipe 230 in the third direction z, thereby ensuring the stability of the thermal management component 23 in the box 21 .
  • the top wall 221 and the bottom wall 220 are arranged oppositely along the second direction y.
  • the second direction y may be the width direction of the main pipe 230 , or a direction perpendicular to the extension direction and thickness direction of the main pipe 230 .
  • the branch pipe 231 may extend along the second direction y.
  • the branch pipe 231 is provided on the inner surface of the main pipe 230.
  • the surface of the main pipe 230 opposite to the inner surface is the outer surface.
  • the bottom wall 220 is used to abut the outer surface of the main pipe 230
  • the top wall 221 is used to abut the inner surface of the main pipe 230.
  • the thermal management component 23 can be restricted in the second The displacement in direction y ensures the stability of the thermal management component 23 in the box 21 .
  • 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 contour level of the box assembly 20 can be improved, making the box The body assembly 20 has a flat appearance.
  • the size of the branch pipe 231 in the third direction z is smaller than the size of the main pipe 230 in the third direction z.
  • the top wall 221 is provided with an opening 2210 to enable the branch pipe 231 to extend from the opening 2210 .
  • the opening 2210 extends along the first direction x, so that when the main pipe 230 is inserted into the guide rail 22a, the branch pipe 231 can move synchronously.
  • the technical solution of the embodiment of the present application is that in the third direction z, the main pipe 230 is limited by the first side wall 222 and the second side wall 223, and in the second direction y, the main pipe 230 is limited by the top wall 221 and the second side wall 223.
  • the limitation of the bottom wall 220 therefore, through the bottom wall 220, the top wall 221, the first side wall 222 and the second side wall 223, can limit the position of the main pipe 230 in the second direction y and the third direction z, so as to achieve thermal management.
  • the component 23 is stably located in the cavity to ensure the thermal management effect of the battery cells.
  • the inner wall of the cavity forms a limiting rib 22b, and the limiting rib 22b is in contact with the outer wall of the main pipe 230.
  • the limiting rib 22b is a structure that protrudes from the inner wall of the cavity, extends along the first direction x, and is used to contact the outer wall of the main pipe 230. Referring to FIG. 8 , limiting ribs 22 b 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 the four surfaces of the main pipe 230 .
  • the number of limiting ribs 22b on the bottom wall 220, the top wall 221, the first side wall 222 and the second side wall 223 is multiple respectively, that is, each surface of the main pipe 230 is provided with multiple limiting ribs 22b.
  • the limiting convex rib 22b is against the top.
  • the number of the limiting convex ribs 22b is not limited.
  • the numbers of the limiting convex ribs 22b on the bottom wall 220, the top wall 221, the first side wall 222 and the second side wall 223 are one and two respectively. One or three etc.
  • the limiting convex ribs 22b protrude from the inside of the cavity to contact the outer wall of the main pipe 230.
  • the contact area between the main pipe 230 and the guide rail 22a can be reduced, and the main pipe can be lowered.
  • the friction between 230 and the guide rail 22a makes the installation of the main pipe 230 light and fast, achieving the purpose of rapid assembly of the thermal management component 23.
  • the limiting ribs 22b can also allow the glue to act uniformly on the main pipe 230 and the guide rail 22a. between the guide rails 22a to ensure the connection strength between the main pipe 230 and the guide rails 22a.
  • the outer wall of the main pipe 230 and the guide rail 22a are connected through an adhesive layer (not shown in the figure).
  • Connection through an adhesive layer means that an adhesive layer is provided between the outer wall of the main pipe 230 and the inner wall of the guide rail 22a, and the adhesive layer plays a bonding role to connect the main pipe 230 and the guide rail 22a.
  • glue is injected between the main pipe 230 and the guide rail 22a through a glue injection process, and an adhesive layer is formed after the glue solidifies to achieve the bonding between the main pipe 230 and the guide rail 22a.
  • an adhesive layer is provided between the main pipe 230 and the guide rail 22a, which can improve the connection strength between the main pipe 230 and the guide rail 22a, so that the thermal management component 23 is stably located in the box 21.
  • the battery has higher safety.
  • the thermal management component 23 includes two main pipes 230, and both ends of the branch pipe 231 are respectively connected to the two main pipes 230; two supports 22 are provided, and two supports are provided.
  • the members 22 are disposed oppositely along the second direction y perpendicular to the first direction x.
  • the support members 22 are disposed correspondingly to the main pipes 230 .
  • Each main pipe 230 is supported by the corresponding support member 22 .
  • One of the two main pipes 230 is used to collect external media to lead to the branch pipe 231.
  • one of the main pipes 230 has a medium inlet 2300 for the medium to enter the thermal management component 23;
  • the other pipe 230 is used to collect the medium in all the branch pipes 231 to be discharged out of the thermal management component 23.
  • one of the main pipes 230 has a medium outlet 2301 for discharging the medium.
  • the thermal management component 23 may include a plurality of branch pipes 231 extending along the second direction y. In the second direction y, two main pipes 230 are arranged oppositely, and the plurality of branch pipes 231 are provided in The two main pipes 230 are connected between and with the two main pipes 230 .
  • the support members 22 are arranged corresponding to the main pipes 230 , that is, two support members 22 are provided in the box 21 , and the two support members 22 are arranged oppositely along the second direction y to respectively support the corresponding main pipes 230 .
  • the technical solution of the embodiment of the present application is to provide a corresponding number of supports 22 in the main pipe 230 to improve the support effect of the thermal management component 23 and reduce the risk of the thermal management component 23 being deformed due to the gravity of the battery cells, so that The thermal management component 23 plays an effective thermal management role for the battery cells, thereby making the battery have higher safety.
  • Figure 9 is an enlarged view of B in Figure 3.
  • the thermal management component 23 also includes a fixing bracket 232.
  • One end of the fixing bracket 232 is connected to the main pipe 230.
  • the other end of the bracket 232 is connected to the box 21 .
  • the fixing bracket 232 is a component that connects the main pipe 230 and the box 21 and is used to increase the connection strength between the thermal management component 23 and the box 21 and reduce the risk of the thermal management component 23 deforming and collapsing due to the gravity of the battery cells.
  • the fixed bracket 232 is L-shaped, and its vertical section is connected to the main pipe 230 . It can be connected to the main pipe 230 by welding or bonding.
  • the horizontal section of the fixed bracket 232 is formed with A through hole for a screw or rivet to pass through (the rivet 233 shown in FIG. 6 ), so that the horizontal section of the fixing bracket 232 is connected to the box 21 .
  • the connection strength between the thermal management component 23 and the box 21 can be improved, thereby ensuring that the thermal management component 23 can effectively adjust the temperature of the battery cells, so that the battery has Higher security.
  • the box 21 includes a frame 210, a bottom plate (not shown in the figure) and a cross beam 211.
  • the frame 210 is arranged around the bottom plate and connected to the bottom plate.
  • the cross beam 211 is set on the bottom plate. Both ends of the cross beam 211 are connected to the frame 210.
  • the support members 22 is arranged on the frame 210, and the fixed bracket 232 is connected to the cross beam 211.
  • the frame 210 includes a plurality of wall portions, and the plurality of wall portions are connected to each other to surround an accommodation space capable of accommodating the battery cells and the thermal management component 23 .
  • the bottom wall 220 is provided at the bottom of the frame 210 and is used to support multiple wall portions.
  • the cross beam 211 is a component disposed in the accommodation space, and its two ends are connected to two opposite wall portions of the frame 210.
  • the extension direction of the cross beam 211 is the extension direction of the branch pipe 231, or the extension direction of the cross beam 211. Perpendicular to the first direction x, the function of the cross beam 211 is to improve the structural strength of the box 21 .
  • the support member 22 is provided on the frame 210 , that is, the support member 22 is provided on one of the wall portions of the frame 210 , and the wall portion extends along the first direction x.
  • the fixed bracket 232 is connected to the cross beam 211, which means that the fixed bracket 232 connects the main pipe 230 and the cross beam 211 to each other.
  • the support 22 is provided on the frame 210, and the fixed bracket 232 is connected to the cross beam 211, so that the main pipe 230 of the thermal management component 23 can be connected to the frame 210 and the cross beam 211 of the box 21, thereby ensuring
  • the connection strength between the thermal management component 23 and the box 21 is to prevent the thermal management component 23 from deforming due to the gravity of the battery cells.
  • the frame 210 includes a front frame 212, a rear frame 213 and two side frames 214.
  • the front frame 212 and the rear frame 213 are arranged oppositely in the first direction x, and the two side frames 214 are relatively arranged along the second direction y.
  • the two support members 22 (guide rails 22a) in the box assembly 20 are respectively provided on the two side frames 214. After the two main pipes 230 of the thermal management component 23 are inserted into the corresponding support members 22, the The front frame 212 and the rear frame 213 are welded to the two side frames 214 .
  • the present application also provides a battery, which includes the box assembly 20 described in the above embodiments.
  • the battery further includes a plurality of battery cells.
  • the plurality of battery cells are disposed inside the box 21 of the box assembly 20 and are affected by the thermal management component 23 and can have their temperatures adjusted by the thermal management component 23 .
  • the present application also provides an electrical device, including the battery described in the above embodiments, and the battery is used to provide electric energy.
  • the present application also provides a box assembly 20.
  • the box assembly 20 includes a box 21, a support 22 and a thermal management component 23.
  • the box assembly 20 is used to accommodate battery cells.
  • the box 21 includes a frame 210 and a cross beam 211.
  • the frame 210 includes two side frames 214 oppositely arranged along the second direction y.
  • the side frames 214 extend along the first direction x.
  • the support member 22 and the side frame 214 are integrally formed.
  • the support member 22 is a guide rail 22a formed on the inner wall of the side frame 214.
  • the guide rail 22a is formed on the inner wall of the side frame 214 and extends along the first direction x to penetrate the groove at the end of the side frame 214. structure.
  • the thermal management component 23 includes two main pipes 230 and a plurality of branch pipes 231.
  • the two main pipes 230 are oppositely arranged along the second direction y and extend along the first direction x respectively.
  • the plurality of branch pipes 231 are provided on the two main pipes 230. and extend along the second direction y respectively.
  • the medium enters the thermal management component 23 from one of the main pipes 230 and flows through a plurality of branch pipes 231 to exchange heat with the battery cells, thereby adjusting the temperature of the battery cells.
  • the heat-exchanged medium is collected in another main pipe 230 and discharged. .
  • the main pipes 230 correspond to the guide rails 22a one-to-one.
  • the main pipes 230 of the thermal management component 23 are aligned with their corresponding guide rails 22a, and are inserted into the guide rails 22a along the first direction x to complete the thermal management component 23. assembly.
  • 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 arranged oppositely along the second direction y for limiting the displacement of the main pipe 230 in the second direction y.
  • the first side wall 222 and the second side wall 223 are arranged oppositely along the third direction z for limiting the displacement of the main pipe 230 in the third direction z.
  • the top wall 221 is provided with an opening 2210 to avoid the branch pipe 231, so that the branch pipe 231 can pass through the opening 2210.
  • the first direction x, the second direction y and the third direction z are two perpendicular to each other.
  • a limiting rib 22b is formed on the inner wall of the guide rail 22a. The limiting rib 22b contacts the outer wall of the main pipe 230 to reduce the contact area between the main pipe 230 and the guide rail 22a, thereby reducing the guide rail 22a and the friction force between main pipe 230.
  • the guide rail 22a and the main pipe 230 may be bonded.
  • the main pipe 230 can also be connected to the cross beam 211 of the box 21 through a fixing bracket 232 .

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

La présente invention concerne un ensemble boîte, une batterie et un dispositif électrique. L'ensemble boîte comprend un corps de boîte, un élément de support et un composant de gestion thermique. L'élément de support est fixé dans le corps de boîte. Le composant de gestion thermique est disposé dans le corps de boîte, et utilisé pour recevoir un milieu de façon à ajuster une température d'un élément de batterie ; le composant de gestion thermique comprend un tuyau principal et au moins un tuyau de ramification, le tuyau de ramification étant en communication avec le tuyau principal, et le ou les tuyaux de ramification étant utilisés pour entrer en contact avec l'élément de batterie, de façon à régler la température de l'élément de batterie. Le tuyau principal et l'élément de support s'étendent le long d'une première direction, et le tuyau principal est supporté par l'élément de support. La solution technique fournie dans la présente invention peut améliorer la sécurité d'une batterie.
PCT/CN2022/111211 2022-05-23 2022-08-09 Ensemble boîte, batterie et dispositif électrique WO2023226201A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202280059306.7A CN118020198A (zh) 2022-05-23 2022-08-09 箱体组件、电池和用电设备

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202221229805.X 2022-05-23
CN202221229805.XU CN217334313U (zh) 2022-05-23 2022-05-23 箱体组件、电池和用电设备

Publications (1)

Publication Number Publication Date
WO2023226201A1 true WO2023226201A1 (fr) 2023-11-30

Family

ID=82953837

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/111211 WO2023226201A1 (fr) 2022-05-23 2022-08-09 Ensemble boîte, batterie et dispositif électrique

Country Status (2)

Country Link
CN (2) CN217334313U (fr)
WO (1) WO2023226201A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024044970A1 (fr) * 2022-08-30 2024-03-07 宁德时代新能源科技股份有限公司 Boîtier, batterie et dispositif électrique

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130113741A (ko) * 2012-04-06 2013-10-16 인지컨트롤스 주식회사 전기자동차용 배터리
CN107644960A (zh) * 2016-07-21 2018-01-30 三星Sdi株式会社 电池系统
CN207368030U (zh) * 2017-08-11 2018-05-15 深圳市沃特玛电池有限公司 一种液冷电池箱结构
CN109768351A (zh) * 2019-01-21 2019-05-17 吉林大学 动力电池组R134a制冷剂直冷与热管耦合冷却系统及控制方法
CN110140233A (zh) * 2017-01-04 2019-08-16 三星Sdi株式会社 电池系统及包括其的车辆
CN209804732U (zh) * 2019-03-15 2019-12-17 北京新能源汽车股份有限公司蓝谷动力系统分公司 电池箱体的侧边框和电池箱体
CN210092152U (zh) * 2019-04-24 2020-02-18 北京新能源汽车股份有限公司 电池包壳体、动力电池包和具有其的车辆
CN213752927U (zh) * 2020-12-18 2021-07-20 凯博能源科技有限公司 一种电池箱体及电池包

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130113741A (ko) * 2012-04-06 2013-10-16 인지컨트롤스 주식회사 전기자동차용 배터리
CN107644960A (zh) * 2016-07-21 2018-01-30 三星Sdi株式会社 电池系统
CN110140233A (zh) * 2017-01-04 2019-08-16 三星Sdi株式会社 电池系统及包括其的车辆
CN207368030U (zh) * 2017-08-11 2018-05-15 深圳市沃特玛电池有限公司 一种液冷电池箱结构
CN109768351A (zh) * 2019-01-21 2019-05-17 吉林大学 动力电池组R134a制冷剂直冷与热管耦合冷却系统及控制方法
CN209804732U (zh) * 2019-03-15 2019-12-17 北京新能源汽车股份有限公司蓝谷动力系统分公司 电池箱体的侧边框和电池箱体
CN210092152U (zh) * 2019-04-24 2020-02-18 北京新能源汽车股份有限公司 电池包壳体、动力电池包和具有其的车辆
CN213752927U (zh) * 2020-12-18 2021-07-20 凯博能源科技有限公司 一种电池箱体及电池包

Also Published As

Publication number Publication date
CN118020198A (zh) 2024-05-10
CN217334313U (zh) 2022-08-30

Similar Documents

Publication Publication Date Title
WO2023050969A1 (fr) Cellule de batterie, batterie et appareil électrique
WO2024093100A1 (fr) Feuille d'électrode, ensemble électrode, élément de batterie, batterie et dispositif électrique
WO2024021304A1 (fr) Composant de gestion thermique, batterie et dispositif électrique
WO2023134110A1 (fr) Batterie et dispositif électrique
WO2023198012A1 (fr) Batterie et dispositif électrique
WO2023134107A1 (fr) Batterie et dispositif électrique
WO2023226201A1 (fr) Ensemble boîte, batterie et dispositif électrique
US20230411761A1 (en) Battery, electric apparatus, and method and apparatus for manufacturing battery
WO2023185244A1 (fr) Structure de dissipation de chaleur, boîte haute tension, batterie et dispositif électrique
WO2024021293A1 (fr) Composant de gestion thermique, batterie et dispositif électrique
WO2023155207A1 (fr) Batterie, dispositif électrique et procédé et dispositif de préparation de batterie
WO2023164993A1 (fr) Composant de gestion thermique, batterie et dispositif électrique
WO2023159486A1 (fr) Batterie, dispositif électrique, procédé et dispositif de préparation de batterie
WO2023155208A1 (fr) Batterie, dispositif électrique et procédé et dispositif de préparation de batterie
WO2024011881A1 (fr) Batterie et dispositif électrique
WO2024021070A1 (fr) Corps de boîte de batterie, batterie et dispositif électrique
EP4383410A1 (fr) Batterie, dispositif électrique, et procédé et dispositif de préparation de batterie
EP4266472A1 (fr) Batterie, dispositif électrique et procédé et dispositif de préparation de batterie
WO2024036704A1 (fr) Poutre structurale, boîtier, batterie et dispositif électrique
WO2023133737A1 (fr) Batterie, dispositif consommateur de courant ainsi que procédé et dispositif de préparation de batterie
CN219696557U (zh) 热管理系统、电池的箱体、电池以及用电装置
CN219591573U (zh) 电池的端板、电池及用电装置
EP4243158A1 (fr) Batterie et dispositif électrique
WO2023159487A1 (fr) Batterie, dispositif électrique, et procédé et dispositif de préparation de batterie
WO2023155209A1 (fr) Batterie, dispositif électrique et procédé et dispositif de préparation de batterie

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22943391

Country of ref document: EP

Kind code of ref document: A1