WO2024088136A1 - 电池、储能装置以及用电设备 - Google Patents

电池、储能装置以及用电设备 Download PDF

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Publication number
WO2024088136A1
WO2024088136A1 PCT/CN2023/125239 CN2023125239W WO2024088136A1 WO 2024088136 A1 WO2024088136 A1 WO 2024088136A1 CN 2023125239 W CN2023125239 W CN 2023125239W WO 2024088136 A1 WO2024088136 A1 WO 2024088136A1
Authority
WO
WIPO (PCT)
Prior art keywords
box body
battery
bottom wall
side wall
flange
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2023/125239
Other languages
English (en)
French (fr)
Inventor
杨辉
王勇
覃论
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Contemporary Amperex Technology Co Ltd
Original Assignee
Contemporary Amperex Technology Co Ltd
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 Contemporary Amperex Technology Co Ltd filed Critical Contemporary Amperex Technology Co Ltd
Priority to EP23881714.2A priority Critical patent/EP4607671A4/en
Publication of WO2024088136A1 publication Critical patent/WO2024088136A1/zh
Priority to US19/187,331 priority patent/US20250253435A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • 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
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • 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
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • 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
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch cells
    • 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
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • 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
    • 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 battery technology, and in particular to a battery, an energy storage device, and an electrical device.
  • the present application provides a battery, an energy storage device and an electrical device.
  • the technical solution provided in the present application can improve the energy density of the battery.
  • the present application provides a battery, comprising a battery cell, a first box, a second box and a flow channel; the first box and the second box are interconnected to jointly form a closed space for accommodating the battery cell; the flow channel is used to accommodate a heat exchange medium to regulate the temperature of the battery cell; wherein the battery also includes an inlet pipe and an outlet pipe, both of which are connected to the flow channel, and both of which are located on the side of the first box facing the second box, and are located outside the closed space.
  • the inlet pipe and the outlet pipe of the battery are located outside the closed space and on the side of the first box body facing the second box body.
  • the height space of the second box body itself can be used to achieve plugging and unplugging with the external pipe.
  • the difficulty of plugging and unplugging the battery can be reduced; on the other hand, the battery does not need to set up additional space to achieve plugging and unplugging of the inlet pipe and the outlet pipe with the external pipe, so it can accommodate more battery cells, thereby improving the volume energy density of the battery.
  • the first box body includes a bottom wall, and along the thickness direction of the bottom wall, the bottom wall is arranged opposite to the second box body; the inlet pipe and the outlet pipe are both arranged obliquely or vertically relative to the bottom wall.
  • the inlet pipe and the outlet pipe are inclined or perpendicular to the bottom wall in the plugging and unplugging direction of the external pipeline, so that the height space of the battery can be reasonably utilized to achieve plugging and unplugging without occupying additional space, thereby improving the energy density of the battery.
  • the inlet pipe and the outlet pipe do not extend beyond the second box.
  • the inlet pipe and the outlet pipe are arranged not to exceed the second box body, so that the plugging and unplugging positions of the inlet pipe and the outlet pipe and the external pipeline are within the height range of the battery.
  • the flow channel is formed inside the bottom wall, and the inlet pipe and the outlet pipe are both arranged on the bottom wall.
  • the flow channel is arranged inside the bottom wall, so that the bottom wall can not only support the battery cells but also adjust the temperature of the battery cells, thus simplifying the battery structure and effectively improving the energy density of the battery.
  • a connection point between the inlet pipe and the bottom wall, and a connection point between the outlet pipe and the bottom wall are both located outside the closed space.
  • connection between the inlet pipe and the bottom wall and the connection between the outlet pipe and the bottom wall are arranged outside the closed space, which can It is possible to avoid opening a hole in the first box body or the second box body to lead the inlet pipe and the outlet pipe to the outside of the closed space, so the steps of sealing the openings can be reduced, thereby improving the sealing of the battery.
  • the bottom wall includes a first substrate and a second substrate which are stacked together, the second substrate is arranged on a side of the first substrate away from the second box body, and the flow channel is formed between the second substrate and the first substrate.
  • the first substrate and the second substrate are stacked to form a flow channel, so that the bottom wall structure is simple and easy to manufacture.
  • a groove is formed on a surface of the second substrate facing the first substrate, and a surface of the first substrate facing the first substrate and the groove together form the flow channel.
  • the heat exchange medium can effectively adjust the temperature of the battery cell and improve the reliability of the battery.
  • the first box body further includes a first side wall, the first side wall is arranged at an edge of the bottom wall, and the first side wall is connected to the second box body.
  • the structural strength of the first box body can be improved, and the battery can have a larger closed space to accommodate more battery cells, thereby improving the volume energy density of the battery.
  • the first side wall is a non-closed structure.
  • the first side wall is set as a non-closed structure. On the one hand, it can make the first box have a certain strength to meet the needs; on the other hand, when the flow channel is formed inside the bottom wall, the inlet pipe and the outlet pipe can be set at the part of the bottom wall where the first side wall is not set, so as to avoid the flow resistance increasing due to the setting of the first side wall, and the heat exchange medium cannot flow through the inlet pipe and the outlet pipe; on the other hand, because the first side wall is not set at the edge of part of the bottom wall, there is no draft angle at the position of the corresponding part of the first box (referring to the bottom wall being set with the first side wall, and the first side wall and the bottom wall being set at an angle), so it does not interfere with the battery cell, thereby improving the utilization rate of the enclosed space and making the battery have a higher volume energy density.
  • the bottom wall includes a first area and a second area, the first area and the second area are arranged side by side along a first direction, the first side wall is arranged at the edge of the first area, the first side wall is not arranged at the edge of the second area, and the first direction is perpendicular to the thickness direction of the bottom wall; the inlet pipe and the outlet pipe are both located in the second area.
  • the height space of the first box body is determined by the first side wall. For this reason, the inlet pipe and the outlet pipe are arranged in the second area where the first side wall is not arranged.
  • the height space between the first box body and the second box body can be used for plugging and unplugging with the external pipeline, that is, the height of the battery itself is reasonably utilized, so the difficulty of plugging and unplugging can be reduced.
  • the first area includes a first edge and two second edges, the two second edges are arranged opposite to each other along a second direction, the first edge connects the two second edges, the first side wall is arranged at the first edge and the two second edges, and the second direction is perpendicular to the thickness direction of the bottom wall.
  • the structural strength of the first box body can be improved, the structural strength of the battery can be improved, and the battery cell has higher reliability.
  • both of the second edges extend along the first direction, and the first direction, the second direction, and the thickness direction of the bottom wall are perpendicular to each other.
  • the first box is a square box. Compared with a non-square box, the square box can be manufactured efficiently, improves the manufacturing efficiency of the battery, and can accommodate more battery cells.
  • the first box body further includes a first flange, the first flange extends outward from an end of the first side wall away from the bottom wall, and the first side wall is connected to the second box body through the first flange.
  • the first side wall and the second box body can be conveniently and effectively connected, so that the first side wall and the second box body have a stable and sealed connection relationship, thereby improving the reliability of the battery cell in the closed space.
  • the second box body includes a top wall, a second side wall and a second flange, and the second side wall is The second flange is disposed at the edge of the top wall, and extends outward from an end of the second side wall away from the top wall; the second flange is connected to an edge of the bottom wall where the first side wall is not disposed and to the first flange.
  • the second box body is connected to the edge of the bottom wall where the first side wall is not provided and the first side wall through the second flange, which can improve the sealing performance of the first box body and the second box body.
  • the second side wall is arranged around the edge of the top wall to form a chamber, thereby increasing the volume of the closed space, accommodating more battery cells, and making the battery have a higher volume energy density.
  • the second box body includes a top wall, a second side wall and a second flange, the second side wall is arranged on a partial edge of the top wall, and the second flange extends outward from an end of the second side wall away from the top wall; the second flange is connected to an edge of the bottom wall where the first side wall is not arranged, and an edge of the top wall where the second side wall is not arranged is connected to the first flange.
  • the main body of the second box is in the shape of a plate, and a part of the edge of the main body is provided with a second side wall to correspond to the part of the first box that is not provided with the first side wall, so the second box has the advantages of simple structure and low material cost.
  • the second box is connected to the edge of the bottom wall that is not provided with the first side wall through the second flange, and the edge of the plate-shaped top wall is connected to the first flange, which can improve the sealing of the first box and the second box, thereby improving the reliability of the battery.
  • the second box body includes a top wall, a second side wall and a second flange, the second side wall is arranged at the edge of the top wall, and the second flange extends outward from an end of the second side wall away from the top wall; the second flange is provided with a first avoidance portion and a second avoidance portion, and the inlet pipe and the outlet pipe pass through the first avoidance portion and the second avoidance portion respectively.
  • the second flange is provided to improve the sealing of the first box body and the second box body, and the sealing of the battery is improved.
  • the first avoidance portion and the second avoidance portion are provided to avoid the inlet pipe and the outlet pipe respectively, so as to reduce the influence of the inlet pipe and the outlet pipe on the sealing of the battery.
  • the first avoidance portion and the second avoidance portion are notches arranged on the edge of the second flange.
  • the first avoidance portion and the second avoidance portion are notches formed on the edge of the second flange, and the molding thereof is simple and convenient.
  • the battery further includes a thermal management component
  • the flow channel is disposed in the thermal management component
  • the thermal management component is disposed in the closed space
  • the inlet pipe and the outlet pipe are both disposed in the thermal management component.
  • an independent thermal management component is provided to adjust the temperature of the battery cell, so that the battery has higher reliability.
  • the present application further provides an energy storage device, comprising the battery described in any one of the first aspects.
  • the present application further provides an electrical device, comprising a battery as described in any one of the first aspects, wherein the battery is used to provide electrical energy.
  • FIG1 is a schematic structural diagram of a vehicle in some embodiments of the present application.
  • FIG2 is a perspective view of a battery in some embodiments of the present application.
  • FIG3 is a three-dimensional exploded view of a battery in some embodiments of the present application.
  • FIG4 is a schematic diagram of a first box, an inlet pipe and an outlet pipe in some embodiments of the present application;
  • FIG5 is a partial cross-sectional view of a first box in some embodiments of the present application.
  • FIG6 is a three-dimensional exploded view of a battery in some other embodiments of the present application.
  • FIG7 is a top view of the first box in some embodiments of the present application.
  • FIG8 is an enlarged view of point A in FIG3 ;
  • FIG. 9 is a three-dimensional exploded view of batteries in other embodiments of the present application.
  • Icon 100-battery; 10-battery cell; 20-first box; 21-bottom wall; 22-first side wall; 23-first flange; 210-first substrate; 211-second substrate; 212-first area; 2120-first edge; 2121-second edge; 213-second area; 2110-groove; 30-second box; 31-top wall; 32-second side wall; 33-second flange; 330-first avoidance portion; 331-second avoidance portion; 40-flow channel; 50-inlet pipe; 60-outlet pipe; 70-thermal management component; 80-seal; x-first direction; y-second direction; z-thickness direction; 1000-vehicle; 200-controller; 300-motor.
  • the terms “installed”, “connected”, “connected”, and “attached” should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements.
  • installed should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements.
  • a and/or B can represent: A exists, A and B exist at the same time, and B exists.
  • the character "/" in this application generally indicates that the associated objects before and after are in an "or" relationship.
  • the battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity.
  • the battery mentioned in the present application may include one or more battery cells.
  • the battery also includes a first box and a second box, the first box and the second box are connected to form a closed space together, and the battery cell is arranged in the closed space to prevent liquid or other foreign matter from affecting the charging or discharging of the battery cell.
  • the battery In order to improve the reliability of the battery, the battery generally also includes a flow channel.
  • the flow channel is used to accommodate a heat exchange medium to adjust the temperature of the battery cell so that the battery is within a suitable temperature range, making the battery have a higher reliability.
  • the heat exchange medium here can be a fluid (liquid) or a gas, and adjusting the temperature refers to heating or cooling multiple battery cells.
  • the fluid can be water, a mixture of water and ethylene glycol, or air, etc.
  • the battery may also include an inlet pipe and an outlet pipe, both of which are connected to the flow channel and are located outside the closed space.
  • the inlet pipe and the outlet pipe are connected to a storage device (such as a water tank) storing a heat exchange medium through an external pipeline.
  • the heat exchange medium enters the flow channel from the inlet pipe to adjust the temperature of the battery cell.
  • the heat exchange medium after heat exchange with the battery cell can be discharged from the outlet pipe, so that the heat exchange medium circulates and flows. movement to achieve better temperature regulation.
  • the inlet and outlet pipes of the current battery are both arranged on the side of the battery (a side perpendicular to the height direction of the battery), that is, they are arranged horizontally, and the external pipeline will be connected to the inlet and outlet pipes by plugging and unplugging from the side of the battery horizontally.
  • the energy storage device or the electrical equipment provides a small lateral space for the battery.
  • some batteries will sacrifice the volume of the enclosed space to provide additional plugging and unplugging space for the inlet and outlet pipes, resulting in a decrease in the battery energy density.
  • the inventors have conducted in-depth research and designed a battery, so that the inlet pipe and the outlet pipe of the battery are both located on the side of the first box body facing the second box body, so that when plugging and unplugging the external pipe, the height space of the battery itself can be utilized without setting up additional plugging and unplugging space, thereby making the battery cell have a higher volume energy density and is easy to plug and unplug.
  • the battery disclosed in the embodiment of the present application can be used in, but not limited to, battery cabinets, container-type energy storage devices, etc.
  • the energy storage device can include multiple batteries disclosed in the present application.
  • the battery disclosed in the embodiment of the present application can be used in, but not limited to, electrical equipment such as vehicles, ships or aircraft.
  • the battery disclosed in the present application can be used to form a power supply system of the electrical equipment.
  • the embodiment of the present application provides an electric device using a battery as a power source
  • the electric device may be, but is not limited to, a mobile phone, a tablet computer, a laptop computer, an electric toy, an electric tool, an electric bicycle, an electric motorcycle, an electric car, a ship, a spacecraft, etc.
  • the electric toy may include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, an electric airplane toy, etc.
  • the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, etc.
  • FIG. 1 is a schematic diagram of the structure of a vehicle provided in some embodiments of the present application.
  • Vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc.
  • a battery 100 is provided inside the vehicle 1000, and the battery 100 may be provided at the bottom, head or tail of the vehicle 1000.
  • the battery 100 may be used to power the vehicle 1000, for example, the battery 100 may be used as an operating power source for the vehicle 1000, for the circuit system of the vehicle 1000, for example, for the working power requirements during the startup, navigation and operation of the vehicle 1000.
  • the vehicle 1000 may further include a controller 200 and a motor 300 , wherein the controller 200 is used to control the battery 100 to supply power to the motor 300 , for example, to meet the power requirements of starting, navigating, and driving the vehicle 1000 .
  • the battery 100 can not only serve as an operating power source for the vehicle 1000, but also serve 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.
  • the present application provides a battery 100, see Figures 2 and 3, Figure 2 is a three-dimensional view of the battery in some embodiments of the present application; Figure 3 is a three-dimensional exploded view of the battery 100 in some embodiments of the present application.
  • the battery 100 includes a battery cell 10, a first box 20, a second box 30, and a flow channel 40 (not shown in Figure 3, see Figure 6).
  • the first box body 20 and the second box body 30 are connected to each other to form a closed space for accommodating the battery cell 10.
  • the flow channel 40 is used to accommodate a heat exchange medium to adjust the temperature of the battery cell 10.
  • the battery 100 further includes an inlet pipe 50 and an outlet pipe 60, both of which are connected to the flow channel 40.
  • the inlet pipe 50 and the outlet pipe 60 are both located on the side of the first box body 20 facing the second box body 30 and are located outside the closed space.
  • the first box body 20 and the second box body 30 are connected to each other to define a closed space for accommodating the battery cell 10.
  • the closed space refers to a part that can accommodate the battery cell 10, physically isolate the battery cell 10 from the outside, prevent external pollutants from affecting the battery cell 10, and protect the battery cell 10.
  • the first box body 20 and the second box body 30 can be made of materials such as aluminum, aluminum alloy or stainless steel.
  • the first box body 20 and the second box body 30 can be made of the same material to reduce the difficulty of connecting the first box body 20 and the second box body 30.
  • the first box body 20 and the second box body 30 are both made of aluminum alloy.
  • the first box body 20 and the second box body 30 can be connected by welding, bonding or fastener connection.
  • the first box body 20 and the second box body 30 can be the upper box body and the lower box body of the battery 100 to each other.
  • the first box body 20 is the lower box body
  • the second box body 30 is the upper box body
  • the first box body 20 is the upper box body
  • the second box body 30 is the lower box body.
  • the first box body 20 is below the second box body 30, and the first box body 20 is the lower box body.
  • the number of battery cells 10 can be one or more. Multiple battery cells 10 can be connected in series, in parallel, or in mixed connection. Mixed connection means that multiple battery cells 10 are connected in series and in parallel. Multiple battery cells 10 can be directly connected in series, in parallel, or in mixed connection, and then the whole formed by multiple battery cells 10 is accommodated in a closed space.
  • the battery 100 may also include other structures.
  • the battery 100 may also include a busbar component for realizing electrical connection between multiple battery cells 10.
  • the battery cell 10 may be a secondary battery or a primary battery; the battery cell 10 may also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto.
  • the flow channel 40 may refer to a part that can accommodate and realize the flow of heat exchange medium.
  • the heat exchange medium may be a fluid (liquid) or a gas, and adjusting the temperature means exchanging heat with the battery cell 10, absorbing the heat of the battery cell 10, realizing cooling of the battery cell 10, or providing heat to the battery cell 10, realizing heating of the battery cell 10.
  • the fluid may be water, a mixture of water and ethylene glycol, or air, etc.
  • the inlet pipe 50 and the outlet pipe 60 are components connected to the flow channel 40.
  • the inlet pipe 50 and the outlet pipe 60 can be connected to the external pipeline respectively, so that the heat exchange medium enters the flow channel 40 from the inlet pipe 50 and is discharged from the flow channel 40 by the outlet pipe 60.
  • the inlet pipe 50 and the outlet pipe 60 can be connected to the external pipeline by plugging and unplugging.
  • One end of the inlet pipe 50 is connected to the flow channel 40, and the other end is an open end.
  • the direction of the open end can be the plug-in direction of the inlet pipe 50 and the external pipeline.
  • One end of the outlet pipe 60 is connected to the flow channel 40, and the other end is an open end.
  • the direction of the open end can be the plug-in direction of the outlet pipe 60 and the external pipeline.
  • the external pipeline can be a tubular structure such as a hose, a hard pipe or a steel pipe that can transport a heat exchange medium.
  • At least a portion of the flow channel 40 is located in the closed space to adjust the temperature of the battery cells 10 in the closed space.
  • the inlet pipe 50 and the outlet pipe 60 are located outside the closed space to connect with external pipelines.
  • the inlet pipe 50 and the outlet pipe 60 are both located on the side of the first box body 20 facing the second box body 30 ” can be understood as that the plugging and unplugging directions of the inlet pipe 50 and the outlet pipe 60 and the external pipeline are both relative to the direction of the first box body 20 facing the second box body 30 .
  • the side of the first box body 20 facing the second box body 30 can be understood as a direction not parallel to the reference plane with the interface between the first box body 20 and the second box body 30 as the reference plane.
  • x can be regarded as the length direction pointing to the first box body 20
  • y can be regarded as the width direction pointing to the first box body 20.
  • the inlet pipe 50 and the outlet pipe 60 of the existing battery 100 are arranged in the x or y direction, that is, they are arranged horizontally, or it can be understood that the inlet pipe 50 and the outlet pipe 60 are arranged parallel to the horizontal plane, while in some embodiments of the present application, the inlet pipe 50 and the outlet pipe 60 are not arranged in the x or y direction, that is, it can be understood that the inlet pipe 50 and the outlet pipe 60 are not arranged parallel to the horizontal plane.
  • the inlet pipe 50 and the outlet pipe 60 of the battery 100 are located outside the closed space and on the side of the first box body 20 facing the second box body 30.
  • the height space of the second box body 30 itself can be used to achieve plugging and unplugging with the external pipe.
  • the difficulty of plugging and unplugging the battery 100 can be reduced; on the other hand, the battery 100 does not need to set up additional space to achieve plugging and unplugging of the inlet pipe 50 and the outlet pipe 60 with the external pipe, so it can accommodate more battery cells 10, thereby improving the volume energy density of the battery 100.
  • Figure 4 is a schematic diagram of the first box body 20, the inlet pipe 50 and the outlet pipe 60 in some embodiments of the present application
  • Figure 5 is a partial schematic diagram of the battery 100 in some embodiments of the present application.
  • the first box body 20 includes a bottom wall 21, and along the thickness direction z of the bottom wall 21, the bottom wall 21 is arranged opposite to the second box body 30.
  • the inlet pipe 50 and the outlet pipe 60 are both arranged obliquely or vertically relative to the bottom wall 21.
  • the bottom wall 21 is the main body of the first box body 20 .
  • the bottom wall 21 and the second box body 30 are arranged opposite to each other.
  • the thickness direction z of the bottom wall 21 may be the height direction of the battery 100 .
  • Both the inlet pipe 50 and the outlet pipe 60 are inclined or vertically arranged relative to the bottom wall 21, which may mean that the axes of the inlet pipe 50 and the outlet pipe 60 are inclined or vertically arranged relative to the bottom wall 21, and when the external pipe is plugged in or out, at least part of the direction of the plugging and unplugging force is along the height direction of the battery 100.
  • the inlet pipe 50 and the outlet pipe 60 are arranged obliquely or perpendicularly to the bottom wall 21 with respect to the plugging and unplugging direction of the external pipeline, so as to reasonably utilize the height space of the battery 100 for plugging and unplugging without occupying additional space, thereby improving the volume energy density of the battery 100.
  • the inlet pipe 50 and the outlet pipe 60 do not extend beyond the second box body 30 .
  • the inlet pipe 50 and the outlet pipe 60 are arranged not to exceed the second box body 30, so that the plugging and unplugging positions of the inlet pipe 50 and the outlet pipe 60 and the external pipe are within the height range of the battery 100, thereby being able to reasonably utilize the battery 100 itself.
  • the height space reduces the difficulty of plugging and unplugging.
  • Figure 6 is a partial cross-sectional view of the first box body 20 in some embodiments of the present application.
  • a flow channel 40 is formed inside the bottom wall 21, and the inlet pipe 50 and the outlet pipe 60 are both arranged on the bottom wall 21.
  • the bottom wall 21 has a flow channel 40 formed inside, which means that the bottom wall 21 is integrated with the flow channel 40, and the bottom wall 21 can not only be used as a component to support the battery cell 10, but also as a component to accommodate a heat exchange medium to adjust the temperature of the battery cell 10.
  • the inlet pipe 50 and the outlet pipe 60 are both disposed on the bottom wall 21 and communicate with the flow channel 40 inside the bottom wall 21.
  • the flow channel 40 is arranged inside the bottom wall 21, so that the bottom wall 21 can not only support the battery cell 10, but also adjust the temperature of the battery cell 10, thereby simplifying the structure of the battery 100 and effectively improving the volume energy density of the battery 100.
  • a connection point between the inlet pipe 50 and the bottom wall 21 and a connection point between the outlet pipe 60 and the bottom wall 21 are both located outside the closed space.
  • the inlet pipe 50 and the outlet pipe 60 are both straight pipes, and the position of the inlet pipe 50 away from the opening end thereof can be regarded as the connection between the inlet pipe 50 and the bottom wall 21 , and the position of the outlet pipe 60 away from the opening end thereof can be regarded as the connection between the outlet pipe 60 and the bottom wall 21 .
  • two through holes may be formed on the surface of the bottom wall 21, the two through holes are connected to the flow channel 40 inside the bottom wall 21, and the two through holes correspond to the inlet pipe 50 and the outlet pipe 60.
  • the inlet pipe 50 is arranged on the bottom wall 21 and is connected to the flow channel 40 through the corresponding through holes
  • the outlet pipe 60 is arranged on the bottom wall 21 and is connected to the flow channel 40 through the corresponding through holes.
  • the connection between the inlet pipe 50 and the bottom wall 21 and the connection between the outlet pipe 60 and the bottom wall 21 may refer to the through holes formed on the surface of the bottom wall 21. Since the through holes are outside the closed space, the inlet pipe 50 and the outlet pipe 60 may be arranged on the bottom wall 21 outside the closed space.
  • connection between the inlet pipe 50 and the bottom wall 21 and the connection between the outlet pipe 60 and the bottom wall 21 are arranged outside the closed space, which can avoid opening holes in the first box body 20 or the second box body 30 to lead the inlet pipe 50 and the outlet pipe 60 to the outside of the closed space, so the steps of sealing the openings can be reduced, thereby improving the sealing of the battery 100.
  • connection between the inlet pipe 50 and the bottom wall 21 and the connection between the outlet pipe 60 and the bottom wall 21 can be located in a closed space, with parts of the inlet pipe 50 and the outlet pipe 60 located in the closed space, and the other parts passing through the first box body 20 or the second box body 30 to be located outside the closed space and connected to an external pipeline.
  • the bottom wall 21 includes a first substrate 210 and a second substrate 211 stacked together.
  • the second substrate 211 is disposed on a side of the first substrate 210 away from the second box body 30 , and a flow channel 40 is formed between the second substrate 211 and the first substrate 210 .
  • the first substrate 210 and the second substrate 211 are stacked along the thickness direction z of the bottom wall 21, and a flow channel 40 for accommodating a heat exchange medium is formed therebetween.
  • the first substrate 210 is closer to the second housing 30 than the second substrate 211, and the inlet pipe 50 and the outlet pipe 60 can be disposed on the surface of the first substrate 210 that is away from the second substrate 211 and connected to the flow channel 40.
  • the first substrate 210 and the second substrate 211 can be connected to each other by bonding or welding.
  • the first substrate 210 and the second substrate 211 are stacked to form the flow channel 40, so that the bottom wall 21 has a simple structure and is easy to manufacture.
  • the outlet channel 40 may be formed inside the bottom wall 21 by integral molding.
  • a groove 2110 is formed on a surface of the second substrate 211 facing the first substrate 210 , and a surface of the first substrate 210 facing the first substrate 210 and the groove 2110 together form a flow channel 40 .
  • the surface of the second substrate 211 facing the first substrate 210 may be the inner wall surface of the bottom wall 21, and a groove 2110 is provided on the inner wall surface to form a flow channel 40 for the heat exchange medium to flow, thereby achieving temperature regulation of the battery cell 10.
  • the surface of the first substrate 210 facing the second substrate 211 may be a flat surface.
  • the surface of the first substrate 210 facing the second substrate 211 may also be provided with a groove 2110 to be arranged opposite to the groove 2110 on the second substrate 211.
  • the surface of the first substrate 210 facing away from the second substrate 211 may be a flat surface.
  • a groove 2110 is formed on the surface of the second substrate 211 to form a flow channel together with the first substrate 210. 40 , so that the heat exchange medium can effectively adjust the temperature of the battery cell 10 and improve the reliability of the battery 100 .
  • the first box body 20 further includes a first side wall 22 , which is disposed at an edge of the bottom wall 21 , and is connected to the second box body 30 .
  • the first side wall 22 is a component that protrudes from the bottom wall 21 along the thickness direction z of the bottom wall 21 and is connected to the edge of the bottom wall 21.
  • One end of the first side wall 22 away from the bottom wall 21 can be connected to the second box body 30.
  • the structural strength of the first box body 20 can be improved, and the battery 100 has a larger closed space to accommodate more battery cells 10 , thereby improving the volume energy density of the battery 100 .
  • the first side wall 22 is a non-closed structure.
  • the first side wall 22 is a non-closed structure may mean that the first side wall 22 is not provided on a portion of the edge of the bottom wall 21, so that the first and tail ends of the first side wall 22 are not closed, or in other words, the first side wall 22 is only provided on a portion of the edge of the bottom wall 21.
  • the first side wall 22 is set as a non-closed structure. On the one hand, it can make the first box body 20 have a certain strength to meet the needs; on the other hand, when the flow channel 40 is formed inside the bottom wall 21, the inlet pipe 50 and the outlet pipe 60 can be set at the part of the bottom wall 21 where the first side wall 22 is not set, so as to avoid the flow resistance increased due to the setting of the first side wall 22 (if the inlet pipe 50 and the outlet pipe 60 are set on the first side wall 22, the flow resistance is too large due to the height difference between the first side wall 22 and the bottom wall 21), and the heat exchange medium cannot flow through the inlet pipe 50 and the outlet pipe 60; on the other hand, because the first side wall 22 is not set at a part of the edge of the bottom wall 21, there is no draft angle at the position of the corresponding part of the first box body 20, so it does not interfere with the battery cell 10, thereby improving the utilization rate of the closed space and making the battery 100 have a higher volume energy density.
  • FIG. 7 is a top view of the first box body 20 in some embodiments of the present application.
  • the bottom wall 21 includes a first area 212 and a second area 213, the first area 212 and the second area 213 are arranged side by side along the first direction x, the first side wall 22 is arranged at the edge of the first area 212, and the edge of the second area 213 is not provided with the first side wall 22, and the first direction x is perpendicular to the thickness direction z of the bottom wall 21.
  • the inlet pipe 50 and the outlet pipe 60 are both located in the second area 213.
  • the first box body 20 may be a square box body
  • the first direction x may be the length direction of the first box body 20
  • the first area 212 and the second area 213 are two areas arranged side by side along the length direction of the first box body 20.
  • the first area 212 and the second area 213 may both be square, and the edge of the first area 212 and the edge of the second area 213 together constitute the edge of the bottom wall 21.
  • the edges of the first area 212 are all provided with the first side wall 22, and the edges of the second area 213 are not provided with the first side wall 22.
  • the inlet pipe 50 and the outlet pipe 60 are both located in the second area 213 , which means that the inlet pipe 50 and the outlet pipe 60 are located at the bottom wall 21 without the first side wall 22 .
  • the height space of the first box body 20 is determined by the first side wall 22.
  • the inlet pipe 50 and the outlet pipe 60 are arranged in the second area 213 where the first side wall 22 is not arranged.
  • the height space between the first box body 20 and the second box body 30 can be used to plug and unplug the external pipeline, that is, the height of the battery 100 itself is reasonably utilized, so the difficulty of plugging and unplugging can be reduced.
  • the first area 212 includes a first edge 2120 and two second edges 2121, the two second edges 2121 are relatively arranged along the second direction y, the first edge 2120 connects the two second edges 2121, the first side wall 22 is arranged at the first edge 2120 and the two second edges 2121, and the second direction y is perpendicular to the thickness direction z of the bottom wall 21.
  • the second direction y is perpendicular to the thickness direction z of the bottom wall 21.
  • the second direction y may be the width direction of the first box body 20.
  • the two second edges 2121 are arranged opposite to each other, and the first edge 2120 is located between the two second edges 2121 and connects the two first edges 2120, forming a U-shape.
  • the end of the second edge 2121 away from the first edge 2120 is connected to the edge of the second area 213.
  • the first side wall 22 is arranged at the first edge 2120 and the two second edges 2121" may refer to the first side wall 22 being arranged at the three edges (the first edge 2120 and the two second edges 2121) of the first area 212, so as to form a U-shaped non-closed structure.
  • the structural strength of the first box body 20 can be improved, and the structural strength of the battery 100 can be improved, so that the battery cell 10 has higher reliability.
  • the inlet pipe 50 and the outlet pipe 60 may be disposed at corners of the second area 213 to reduce the influence of the space corresponding to the second area 213 of the closed area.
  • the two second edges 2121 extend along the first direction x.
  • the direction y and the thickness direction z of the bottom wall 21 are perpendicular to each other.
  • the first box body 20 is a square box body. Compared with the non-square box body, the square box body can be manufactured efficiently, thereby improving the manufacturing efficiency of the battery 100 and accommodating more battery cells 10.
  • the first box body 20 further includes a first flange 23 , which extends outward from one end of the first side wall 22 away from the bottom wall 21 , and the first side wall 22 is connected to the second box body 30 via the first flange 23 .
  • the first flange 23 can be formed on the first substrate 210 by rolling or bending.
  • the first flange 23 may refer to a portion extending outward from an end of the first side wall 22 away from the bottom wall 21 and being horizontal or nearly horizontal so as to provide a larger contact surface for the second box body 30 .
  • the first side wall 22 and the second box body 30 can be conveniently and effectively connected, so that the first side wall 22 and the second box body 30 have a stable and sealed connection relationship, thereby improving the reliability of the battery cell 10 in the closed space.
  • FIG. 8 is an enlarged view of point A in FIG. 3.
  • the second box body 30 includes a top wall 31, a second side wall 32, and a second flange 33.
  • the second side wall 32 is arranged at the edge of the top wall 31, and the second flange 33 extends outward from one end of the second side wall 32 away from the top wall 31; the second flange 33 is connected to the edge of the bottom wall 21 where the first side wall 22 is not arranged and to the first flange 23.
  • the top wall 31 may be the main body of the second box body 30 , which may be disposed opposite to the bottom wall 21 , and the direction from the top wall 31 to the bottom wall 21 may be the height direction of the battery 100 .
  • the second side wall 32 can be arranged around the edge of the top wall 31 to form a closed structure, that is, the second side wall 32 is arranged around the edge of the top wall 31. Since the second side wall 32 is arranged around the edge of the top wall 31, a chamber is formed inside the second box body 30, and when the second box body 30 and the first box body 20 are connected to each other, the chamber is a part of the closed space.
  • the second flange 33 may refer to a portion extending outward from an end of the second side wall 32 away from the top wall 31 and being horizontal or nearly horizontal so as to provide a larger contact surface for the first box body 20 .
  • the second box body 30 is connected to the edge of the bottom wall 21 where the first side wall 22 is not provided and the first flange 23 through the second flange 33, which can improve the sealing of the first box body 20 and the second box body 30.
  • the second side wall 32 is arranged around the edge of the top wall 31 to form a chamber, thereby increasing the volume of the closed space, accommodating more battery cells 10, and making the battery 100 have a higher volume energy density.
  • the second box body 30 includes a top wall 31, a second side wall 32, and a second flange 33.
  • the second side wall 32 is disposed at a portion of the edge of the top wall 31, and the second flange 33 extends outward from one end of the second side wall 32 away from the top wall 31.
  • the second flange 33 is connected to an edge of the bottom wall 21 where the first side wall 22 is not disposed, and an edge of the top wall 31 where the second side wall 32 is not disposed is connected to the first flange 23.
  • the second side wall 32 may be arranged around a portion of the edge of the top wall 31, and it is a non-closed structure, and the second side wall 32 corresponds to the portion of the bottom wall 21 where the first side wall 22 is not arranged.
  • the second flange 33 may refer to a portion extending outward from an end of the second side wall 32 away from the top wall 31, and being horizontal or nearly horizontal, so as to provide a larger contact surface for the first box body 20.
  • the main body of the second box 30 is in the shape of a plate, and a second side wall 32 is provided at a part of the edge of the main body to correspond to the part of the first box 20 where the first side wall 22 is not provided, so the second box 30 has the advantages of simple structure and low material cost.
  • the second box 30 is connected to the edge of the bottom wall 21 where the first side wall 22 is not provided through the second flange 33, and the edge of the plate-shaped top wall 31 is connected to the first flange 23, which can improve the sealing of the first box 20 and the second box 30, thereby improving the reliability of the battery 100.
  • the second box body 30 includes a top wall 31, a second side wall 32, and a second flange 33, the second side wall 32 is arranged at the edge of the top wall 31, and the second flange 33 extends outward from one end of the second side wall 32 away from the top wall 31.
  • the second flange 33 is provided with a first avoidance portion 330 and a second avoidance portion 331, and the inlet pipe 50 and the outlet pipe 60 pass through the first avoidance portion 330 and the second avoidance portion 331 respectively.
  • the first avoidance portion 330 is provided on the second flange 33 to avoid the inlet pipe 50.
  • the inlet pipe 50 can pass through the first avoidance portion 330 so as not to affect the sealing performance between the second flange 33 and the first box 20.
  • the second avoidance portion 331 is provided on the second flange 33 to avoid the outlet pipe 60.
  • the outlet pipe 60 can pass through the second avoidance portion 331 so as not to affect the sealing performance between the second flange 33 and the first box 20.
  • a seal 80 is provided between the first flange 23 and the second flange 33. Since the second flange 33 is provided with a first avoidance portion 330 and a second avoidance portion 331, the seal 80 can be provided with a corresponding avoidance structure.
  • the seal 80 is annular and is provided around the edge of the closed space to improve the sealing performance between the first flange 23 and the second box body 30, and improve the sealing performance between the second flange 33 and the first box body 20.
  • the seal 80 can be a rubber ring.
  • the first avoidance portion 330 and the second avoidance portion 331 are notches disposed on the edge of the second flange 33 .
  • the notch may refer to a portion that is recessed inward from the edge of the second flange 33 to form a portion that allows the inlet pipe 50 or the outlet pipe 60 to pass through.
  • the first avoidance portion 330 and the second avoidance portion 331 are notches formed on the edge of the second flange 33 , and the molding thereof is simple and convenient.
  • the edge of the sealing member 80 is also provided with corresponding notches to avoid the inlet pipe 50 and the outlet pipe 60 .
  • first avoidance portion 330 and the second avoidance portion 331 may be through holes disposed at the edge of the second flange 33 .
  • FIG9 is a three-dimensional exploded view of a battery 100 in other embodiments of the present application.
  • the battery 100 further includes a thermal management component 70 , the flow channel 40 is disposed in the thermal management component 70 , the thermal management component 70 is disposed in a closed space, and the inlet pipe 50 and the outlet pipe 60 are both disposed in the thermal management component 70 .
  • the thermal management component 70 may be a component independent of the bottom wall 21.
  • the thermal management component 70 is a separate component used to adjust the temperature of the battery cell 10.
  • the thermal management component 70 may be in the shape of a plate, and a flow channel 40 is formed inside the plate to accommodate and allow the heat exchange medium to flow.
  • the inlet pipe 50 and the outlet pipe 60 are arranged on the surface of the heat exchange medium and are located on the side of the first box body 20 facing the second box body 30.
  • the thermal management component 70 may be arranged on the bottom wall 21, and the battery cell 10 is arranged on the surface of the thermal management component 70 away from the bottom wall 21.
  • part of the heat management component 70 is located in the enclosed space, and the other part passes through the first box 20 or the second box 30 to expose the inlet pipe 50 and the outlet pipe 60 to the outside of the enclosed space.
  • the heat management component 70 is located in the enclosed space, and the inlet pipe 50 and the outlet pipe 60 can pass through the second box 30.
  • an independent thermal management component 70 is provided to adjust the temperature of the battery cell 10 , so that the battery 100 has higher reliability.
  • the present application further provides an energy storage device, including the battery 100 described above.
  • the energy storage device may be an energy storage cabinet, which includes a cabinet body and multiple batteries 100, and the multiple batteries 100 are arranged in the cabinet body and can jointly provide power to electrical equipment.
  • the present application further provides an electrical device, including the battery 100 described above, and the battery 100 is used to provide electrical energy.
  • the present application also provides a battery 100, please refer to Figures 3 to 8.
  • the battery 100 includes a battery cell 10, a first box body 20, a second box body 30, a seal 80, an inlet pipe 50 and an outlet pipe 60.
  • the first box body 20 is the lower box body of the battery 100
  • the second box body 30 is the upper box body of the battery 100.
  • the first box body 20 includes a bottom wall 21, a first side wall 22 and a first flange 23.
  • the bottom wall 21 is square, and along the length direction of the first box body 20, the bottom wall 21 includes a first area 212 and a second area 213 arranged side by side.
  • the first area 212 and the second area 213 are both square, and the first side wall 22 is arranged at the edge of the first area 212.
  • the edge of the second area 213 is not provided with the first side wall 22, and the first flange 23 extends outward from one end of the first side wall 22 away from the bottom wall 21.
  • the bottom wall 21 of the first box body 20 includes a first substrate 210 and a second substrate 211 stacked, and the second substrate 211 is arranged at the first area 212.
  • the first side wall 22 is formed at the edge of the first substrate 210.
  • a groove 2110 is formed on the surface of the second substrate 211 facing the first substrate 210, and the surface of the first substrate 210 facing the first substrate 210 and the groove 2110 together form a flow channel 40.
  • the inlet pipe 50 and the outlet pipe 60 are arranged on the first substrate 210 and connected to the flow channel 40.
  • the inlet pipe 50 and the outlet pipe 60 are respectively located at the two corners of the second area 213 and are perpendicular to the first substrate 210.
  • the open ends of the inlet pipe 50 and the outlet pipe 60 face the second box body 30.
  • the inlet pipe 50 and the outlet pipe 60 can be connected to an external pipeline, and an operator or a manipulator can apply a force perpendicular to the first substrate 210 to pull out and plug the external pipeline.
  • the external pipeline can transport heat exchange medium to the flow channel 40 through the inlet pipe 50, and discharge the heat exchange medium in the flow channel 40 through the outlet pipe 60.
  • the bottom wall 21 is supported by the battery cell 10 and can adjust the temperature of the battery 100 through the heat exchange medium.
  • the connection between the inlet pipe 50 and the bottom wall 21 and the connection between the outlet pipe 60 and the bottom wall 21 are both located outside the closed space and at the corner of the first area 212.
  • the second box body 30 includes a top wall 31, a second side wall 32 and a second flange 33.
  • the second side wall 32 is arranged at the edge of the top wall 31 and surrounds the top wall 31.
  • the second flange 33 extends outward from one end of the second side wall 32 away from the top wall 31.
  • the second flange 33 can be connected to the edge of the first area 212 of the bottom wall 21 and the first flange 23 by welding, bonding or bolting.
  • the seal 80 is arranged at the connection between the first box body 20 and the second box body 30 to improve the connection sealing of the first box body 20 and the second box body 30.
  • the first box body 20 and the second box body 30 are connected to each other and together form a closed space.
  • the battery cell 10 is arranged in the closed space and located on the first area 212.
  • the electronic components of the battery 100 such as BMS (Battery Management System) can be arranged on the second area 213.
  • the second flange 33 is provided with a notch to avoid the inlet pipe 50 and the outlet pipe 60.

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

Abstract

本申请公开一种电池、储能装置以及用电设备。电池包括电池单体、第一箱体、第二箱体以及流道；第一箱体和第二箱体相互连接，以共同围成用于容纳电池单体的封闭空间；流道用于容纳换热介质，以调节电池单体的温度；其中，电池还包括进口管和出口管，进口管和出口管均与流道连通，进口管和出口管均处于第一箱体的朝向第二箱体的一侧，并位于封闭空间的外侧。本申请提供的技术方案能够提高电池的能量密度。

Description

电池、储能装置以及用电设备
相关申请的交叉引用
本申请要求享有于2022年10月28日提交的名称为“电池、储能装置以及用电设备”的中国专利申请202222876386.5的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请涉及电池技术领域，具体而言，涉及一种电池、储能装置以及用电设备。
背景技术
节能减排是汽车产业可持续发展的关键，电动车辆由于其节能环保的优势成为汽车产业可持续发展的重要组成部分。对于电动车辆而言，电池技术又是关乎其发展的一项重要因素。
在电池技术的发展中，如何提高电池的能量密度，是电池技术中一个亟待解决的技术问题。
发明内容
本申请提供了一种电池、储能装置和用电设备，本申请提供的技术方案能够提高电池的能量密度。
本申请是通过下述技术方案实现的：
第一方面，本申请提供了一种电池，所述电池包括电池单体、第一箱体、第二箱体以及流道；所述第一箱体和所述第二箱体相互连接，以共同围成用于容纳所述电池单体的封闭空间；所述流道用于容纳换热介质，以调节所述电池单体的温度；其中，所述电池还包括进口管和出口管，所述进口管和所述出口管均与所述流道连通，所述进口管和所述出口管均处于所述第一箱体的朝向所述第二箱体的一侧，并位于所述封闭空间的外侧。
上述方案中，电池的进口管和出口管位于封闭空间的外侧且处于第一箱体朝向第二箱体的一侧，可利用第二箱体本身存在的高度空间，实现与外部管道的拔插，一方面，可降低电池的拔插难度；另一方面，电池无需设置额外的空间实现进口管和出口管与外部管道的拔插，故可容纳更多的电池单体，进而提高电池的体积能量密度。
根据本申请的一些实施例，所述第一箱体包括底壁，沿所述底壁的厚度方向，所述底壁与所述第二箱体相对设置；所述进口管和所述出口管均相对于所述底壁倾斜设置或垂直设置。
上述方案中，进口管和出口管与外部管道拔插方向倾斜或垂直于底壁设置，以能够合理利用电池的高度空间实现拔插，不占用额外的空间，提高电池的能量密度。
根据本申请的一些实施例，沿所述底壁指向所述第二箱体的方向，所述进口管和所述出口管均不超出所述第二箱体。
上述方案中，通过将进口管和出口管设置为不超出第二箱体，以使得进口管和出口管与外部管道的拔插位置处于电池的高度范围内。
根据本申请的一些实施例，所述底壁的内部形成有所述流道，所述进口管和所述出口管均设置于所述底壁上。
上述方案中，将流道设置于底壁的内部，使得底壁在具备支撑电池单体的作用的条件下，还可以调节电池单体的温度，故精简了电池的结构，有效地提高电池的能量密度。
根据本申请的一些实施例，所述进口管与所述底壁的连接处、所述出口管与所述底壁的连接处均位于所述封闭空间的外侧。
上述方案中，将进口管与底壁的连接处、出口管与底壁的连接处设置于封闭空间的外侧，能 够避免在第一箱体或第二箱体上开孔以将进口管和出口管引出至封闭空间的外侧，故可减少对开孔处进行密封的处理的步骤，提高电池的密封性。
根据本申请的一些实施例，所述底壁包括层叠设置的第一基板和第二基板，所述第二基板设置于所述第一基板的背离所述第二箱体的一侧，所述第二基板与所述第一基板之间形成有所述流道。
上述方案中，第一基板和第二基板层叠设置以形成流道，使得底壁结构简单，便于制造。
根据本申请的一些实施例，所述第二基板面向所述第一基板的表面形成有凹槽，所述第一基板的面向所述第一基板的面与所述凹槽共同围成所述流道。
上述方案中，通过在第二基板的表面形成凹槽，以与第一基板共同围成流道，使得换热介质能够有效地调节电池单体的温度，提高电池的可靠性。
根据本申请的一些实施例，所述第一箱体还包括第一侧壁，所述第一侧壁设置于所述底壁的边缘，所述第一侧壁与所述第二箱体连接。
上述方案中，通过在底壁上设置第一侧壁，能够提高第一箱体的结构强度，且使得电池具有较大的封闭空间，容纳更多的电池单体，提高电池的体积能量密度。
根据本申请的一些实施例，沿所述底壁的周向，所述第一侧壁为非闭合结构。
上述方案中，将第一侧壁设置为非闭合结构，一方面，能够使得第一箱体具有一定的强度以满足需求；另一方面，当流道形成于底壁的内部时，进口管和出口管可设置于底壁的未设置有第一侧壁的部位，以避免因设置第一侧壁导致流阻增大，换热介质无法流过进口管和出口管的情况；再一方面，因底壁的部分边缘未设置第一侧壁，故第一箱体的对应该部分的位置不存在拔模斜度(指设置底壁设置有第一侧壁，且第一侧壁与底壁倾斜设置)，故可不与电池单体干涉，提高封闭空间的利用率，使得电池具有较高的体积能量密度。
根据本申请的一些实施例，所述底壁包括第一区域和第二区域，所述第一区域和所述第二区域沿第一方向并排设置，所述第一侧壁设置于所述第一区域的边缘，所述第二区域的边缘未设置有所述第一侧壁，所述第一方向垂直于所述底壁的厚度方向；所述进口管和所述出口管均位于所述第二区域。
上述方案中，第一箱体的高度空间由第一侧壁决定，为此将进口管和出口管设置在不设置第一侧壁的第二区域，能够利用第一箱体和第二箱体的高度空间与外部管道拔插，即合理利用电池本身存在的高度，故可降低拔插难度。
根据本申请的一些实施例，所述第一区域包括第一边缘和两个第二边缘，两个所述第二边缘沿第二方向相对设置，所述第一边缘连接两个所述第二边缘，所述第一侧壁设置于所述第一边缘和两个所述第二边缘，所述第二方向垂直于所述底壁的厚度方向。
上述方案中，通过将第一侧壁设置在第一边缘和两个第二边缘，能够提高第一箱体的结构强度，提高电池的结构强度，使得电池单体具有较高的可靠性。
根据本申请的一些实施例，两个所述第二边缘均沿所述第一方向延伸，所述第一方向、所述第二方向和所述底壁的厚度方向两两垂直。
上述方案中，由于第一方向、第二方向和底壁的厚度方向两两垂直，第一箱体为方形箱体，较非方形的箱体而言，方形箱体能够高效地被制造，提高电池的制造效率，且能够容纳更多的电池单体。
根据本申请的一些实施例，所述第一箱体还包括第一翻边，所述第一翻边从所述第一侧壁远离所述底壁的一端向外延伸，所述第一侧壁通过所述第一翻边与所述第二箱体连接。
上述方案中，通过设置第一翻边，能够方便、有效地连接第一侧壁和第二箱体，使得第一侧壁和第二箱体之间具有稳固和密封的连接关系，提高封闭空间内的电池单体的可靠性。
根据本申请的一些实施例，所述第二箱体包括顶壁、第二侧壁和第二翻边，所述第二侧壁设 置于所述顶壁的边缘，所述第二翻边从所述第二侧壁远离所述顶壁的一端向外延伸；所述第二翻边与所述底壁的未设置所述第一侧壁的边缘以及与所述第一翻边连接。
上述方案中，第二箱体通过第二翻边与底壁的未设置第一侧壁的边缘以及第一翻边连接，能够提高第一箱体和第二箱体的密封性。同时，第二侧壁围设于顶壁的边缘，以能够围成一个腔室，进而提高封闭空间的容积，容纳更多的电池单体，使得电池具有较高的体积能量密度。
根据本申请的一些实施例，所述第二箱体包括顶壁、第二侧壁和第二翻边，所述第二侧壁设置于所述顶壁的部分边缘，所述第二翻边从所述第二侧壁远离所述顶壁的一端向外延伸；所述第二翻边与所述底壁的未设置所述第一侧壁的边缘连接，所述顶壁的未设置所述第二侧壁的边缘与所述第一翻边连接。
上述方案中，第二箱体的主体部分呈板状，主体部分的部分边缘设置有第二侧壁以对应于第一箱体未设置有第一侧壁的部位，故第二箱体具有结构简单，用料成本低的优点。同时，第二箱体通过第二翻边连接底壁的未设置第一侧壁的边缘，通过呈板状的顶壁的边缘与第一翻边连接，能够提高第一箱体和第二箱体的密封性，进而提高电池的可靠性。
根据本申请的一些实施例，所述第二箱体包括顶壁、第二侧壁和第二翻边，所述第二侧壁设置于所述顶壁的边缘，所述第二翻边从所述第二侧壁远离所述顶壁的一端向外延伸；所述第二翻边设有第一避让部和第二避让部，所述进口管和所述出口管分别穿过所述第一避让部和所述第二避让部。
上述方案中，通过设置第二翻边能够提高第一箱体和第二箱体的密封性，提高电池的密封性，通过设置第一避让部和第二避让部，以分别避让进口管和出口管，降低进口管和出口管对电池密封性的影响。
根据本申请的一些实施例，所述第一避让部和所述第二避让部为设置于所述第二翻边边缘的缺口。
上述方案中，第一避让部和第二避让部为形成于第二翻边的边缘的缺口，其成型简单方便。
根据本申请的一些实施例，所述电池还包括热管理部件，所述流道设置于所述热管理部件，所述热管理部件设置于所述封闭空间内，所述进口管和所述出口管均设置于所述热管理部件。
上述方案中，通过设置独立的热管理部件，以对电池单体的温度进行调节，使得电池具有较高的可靠性。
第二方面，本申请还提供一种储能装置，包括第一方面任一项所述的电池。
第三方面，本申请还提供一种用电设备，包括第一方面任一项所述的电池，所述电池用于提供电能。
上述说明仅是本申请技术方案的概述，为了能够更清楚了解本申请的技术手段，而可依照说明书的内容予以实施，并且为了让本申请的上述和其它目的、特征和优点能够更明显易懂，以下特举本申请的具体实施方式。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本申请的某些实施例，因此不应被看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。
图1为本申请一些实施例中的车辆的结构示意图；
图2为本申请一些实施例中的电池的立体图；
图3为本申请一些实施例中电池的立体爆炸图；
图4为本申请一些实施例中第一箱体、进口管和出口管的示意图；
图5为本申请一些实施例中第一箱体的局部剖视图；
图6为本申请的另一些实施例中的电池的立体爆炸图；
图7为本申请一些实施例中第一箱体的俯视图；
图8为图3中A处的放大图；
图9为本申请的另一些实施例中的电池的立体爆炸图。
图标：100-电池；10-电池单体；20-第一箱体；21-底壁；22-第一侧壁；23-第一翻边；210-第一基板；211-第二基板；212-第一区域；2120-第一边缘；2121-第二边缘；213-第二区域；2110-凹槽；30-第二箱体；31-顶壁；32-第二侧壁；33-第二翻边；330-第一避让部；331-第二避让部；40-流道；50-进口管；60-出口管；70-热管理部件；80-密封件；x-第一方向；y-第二方向；z-厚度方向；1000-车辆；200-控制器；300-马达。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
除非另有定义，本申请所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同；本申请中在申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请；本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。本申请的说明书和权利要求书或上述附图中的术语“第一”、“第二”等是用于区别不同对象，而不是用于描述特定顺序或主次关系。在本申请中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本申请所描述的实施例可以与其它实施例相结合。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“附接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
本申请中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：存在A，同时存在A和B，存在B这三种情况。另外，本申请中字符“/”，一般表示前后关联对象是一种“或”的关系。
本申请的实施例所提到的电池是指包括一个或多个电池单体以提供更高的电压和容量的单一的物理模块。例如，本申请中所提到的电池可以包括一个或者多个电池单体。电池还包括第一箱体和第二箱体，第一箱体和第二箱体连接，以共同围成封闭空间，电池单体设置于封闭空间内，以避免液体或其他异物影响电池单体的充电或放电。
电池技术的发展要同时考虑多方面的设计因素，例如，能量密度、循环寿命、放电容量、充放电倍率等性能参数，另外，还需要考虑电池的可靠性。例如，电池热失控会导致电池燃烧、爆炸，严重影响电池的可靠性。热失控是由于电池单体的生热速率远高于散热速率，且热量大量累积未及时散出引起的。为提高电池的可靠性，电池中一般还包括流道。流道用于容纳换热介质以给电池单体调节温度，以使电池处于适宜的温度范围内，使得电池具有较高的可靠性。这里的换热介质可以是流体(液体)或气体，调节温度是指给多个电池单体加热或者冷却。可选的，流体可以为水、水和乙二醇的混合液或者空气等。
电池还可以包括进口管和出口管，进口管和出口管均与流道连通且位于封闭空间的外侧，进口管和出口管通过外部管道与储存有换热介质的储存装置(如水箱)连接，换热介质由进口管进入流道以调节电池单体的温度，与电池单体换热后的换热介质可由出口管排出，使得换热介质循环流 动，以达到更好的温度调节的效果。
在电池技术的发展中，如何提高电池的能量密度，是电池技术中一个亟待解决的技术问题。
发明人发现，目前电池的进口管和出口管均设置于电池的侧方(垂直于电池高度方向上的一侧)，即横向设置，外部管道会沿横向由电池的侧方与进口管和出口管拔插连接，当电池应用于储能装置或者用电设备时，因结构紧凑设计的需求，储能装置或用电设备向电池提供的横向空间较小，为了保证外部管道与进口管和出口管的正常拔插，一些电池会牺牲封闭空间的容积，为进口管和出口管提供额外的拔插空间，导致电池能量密度降低。
鉴于此，为提高电池的能量密度，发明人经深入研究，设计了一种电池，使得该电池的进口管和出口管均处于第一箱体朝向第二箱体的一侧，以在拔插外部管道时，利用电池本身的高度空间，无需设置额外的拔插空间，进而使得电池单体具有较高的体积能量密度，且拔插方便。
本申请实施例公开的电池可以但不限用于电池柜、集装箱式等储能装置中。储能装置可以包括多个本申请公开的电池。
本申请实施例公开的电池可以但不限用于车辆、船舶或飞行器等用电设备中。可以使用具备本申请公开的电池组成该用电设备的电源系统。
本申请实施例提供一种使用电池作为电源的用电设备，用电设备可以为但不限于手机、平板电脑、笔记本电脑、电动玩具、电动工具、电动自行车、电动摩托车、电动汽车、轮船、航天器等等。其中，电动玩具可以包括固定式或移动式的电动玩具，例如，游戏机、电动汽车玩具、电动轮船玩具和电动飞机玩具等等，航天器可以包括飞机、火箭、航天飞机和宇宙飞船等等。
以下实施例为了方便说明，以本申请一实施例的一种用电设备为车辆1000为例进行说明。
请参照图1，图1为本申请一些实施例提供的车辆的结构示意图。车辆1000可以为燃油汽车、燃气汽车或新能源汽车，新能源汽车可以是纯电动汽车、混合动力汽车或增程式汽车等。车辆1000的内部设置有电池100，电池100可以设置在车辆1000的底部或头部或尾部。电池100可以用于车辆1000的供电，例如，电池100可以作为车辆1000的操作电源，用于车辆1000的电路系统，例如用于车辆1000的启动、导航和运行时的工作用电需求。
车辆1000还可以包括控制器200和马达300，控制器200用来控制电池100为马达300供电，例如，用于车辆1000的启动、导航和行驶时的工作用电需求。
在本申请一些实施例中，电池100不仅可以作为车辆1000的操作电源，还可以作为车辆1000的驱动电源，代替或部分地代替燃油或天然气为车辆1000提供驱动动力。
根据本申请的一些实施例，本申请提供一种电池100，请参见图2和图3，图2为本申请一些实施例中的电池的立体图；图3为本申请一些实施例中电池100的立体爆炸图。电池100包括电池单体10、第一箱体20、第二箱体30以及流道40(图3中未示出，可参见图6)。
第一箱体20和第二箱体30相互连接，以共同围成用于容纳电池单体10的封闭空间。流道40用于容纳换热介质，以调节电池单体10的温度。其中，电池100还包括进口管50和出口管60，进口管50和出口管60均与流道40连通，进口管50和出口管60均处于第一箱体20的朝向第二箱体30的一侧，并位于封闭空间的外侧。
第一箱体20与第二箱体30相互连接，以能够共同限定出用于容纳电池单体10的封闭空间。封闭空间指能够容纳电池单体10，将电池单体10与外界物理隔离，以避免外部污染物影响电池单体10，对电池单体10起保护作用的部位。
第一箱体20和第二箱体30可以为铝、铝合金或不锈钢等材料制得。第一箱体20和第二箱体30可以为同种材料制得，以能够降低第一箱体20和第二箱体30的连接难度，例如第一箱体20和第二箱体30均为铝合金制得。第一箱体20与第二箱体30之间可通过焊接、粘接或者紧固件连接的方式连接。第一箱体20和第二箱体30可以互为电池100的上箱体和下箱体，当第一箱体20为下箱体时，第二箱体30则为上箱体；当第一箱体20为上箱体时，第二箱体30为下箱体。如图3，第一箱体20处于第二箱体30的下方，第一箱体20为下箱体。
在电池100中，电池单体10的数量为可以为一个，也可以为多个。多个电池单体10之间可串联或并联或混联，混联是指多个电池单体10中既有串联又有并联。多个电池单体10之间可直接串联或并联或混联在一起，再将多个电池单体10构成的整体容纳于封闭空间内。电池100还可以包括其他结构，例如，该电池100还可以包括汇流部件，用于实现多个电池单体10之间的电连接。电池单体10可以为二次电池或一次电池；电池单体10还可以是锂硫电池、钠离子电池或镁离子电池，但不局限于此。
流道40可以指能够容纳且实现换热介质流动的部位。换热介质可以是流体(液体)或气体，调节温度是指与电池单体10发生热交换，吸收电池单体10的热量，实现电池单体10的冷却，或者向电池单体10提供热量，实现对电池单体10的加热。可选的，流体可以为水、水和乙二醇的混合液或者空气等。
进口管50和出口管60为连通流道40的部件，进口管50和出口管60可以分别与外部管道连接，使得换热介质由进口管50进入流道40内，由出口管60排出于流道40。进口管50和出口管60可以通过插拔的方式与外部管道连接。进口管50的一端与流道40连通，另一端为开口端，该开口端的朝向可为进口管50与外部管道的拔插方向。出口管60的一端与流道40连通，另一端为开口端，该开口端的朝向可为出口管60与外部管道的拔插方向。在一些实施例中，外部管道可以为软管、硬管或钢管等能够输送换热介质的管状结构。
在一些实施例中，流道40的至少部分处于封闭空间内，以调节处于封闭空间内的电池单体10的温度。进口管50和出口管60则位于封闭空间的外侧以与外部管道连接。
“进口管50和出口管60均处于第一箱体20的朝向第二箱体30的一侧”，可以理解为，进口管50和出口管60与外部管道的拔插方向均相对于第一箱体20朝向第二箱体30一侧的方向。
“第一箱体20的朝向第二箱体30的一侧”，可以理解为以第一箱体20和第二箱体30的交界面为基准面，不与该基准面平行方向。为便于理解，参见图3，图3中x可看作指向第一箱体20的长度方向，y可看作指向第一箱体20的宽度方向，现有的电池100的进口管50和出口管60朝向x或y方向设置，即横向设置，或者理解为进口管50和出口管60平行于水平面设置，而本申请一些实施例中，进口管50和出口管60则不朝向x或y方向设置，即可以理解为进口管50和出口管60不平行于水平面设置。
上述方案中，电池100的进口管50和出口管60位于封闭空间的外侧且处于第一箱体20朝向第二箱体30的一侧，可利用第二箱体30本身存在的高度空间，实现与外部管道的拔插，一方面，可降低电池100的拔插难度；另一方面，电池100无需设置额外的空间实现进口管50和出口管60与外部管道的拔插，故可容纳更多的电池单体10，进而提高电池100的体积能量密度。
根据本申请的一些实施例，请参见图4和图5，图4为本申请一些实施例中第一箱体20、进口管50和出口管60的示意图，图5为本申请一些实施例中电池100的局部示意图。第一箱体20包括底壁21，沿底壁21的厚度方向z，底壁21与第二箱体30相对设置。进口管50和出口管60均相对于底壁21倾斜设置或垂直设置。
底壁21为第一箱体20的主体部分，底壁21和第二箱体30相对设置，底壁21的厚度方向z可以为电池100的高度方向。
进口管50和出口管60均相对于底壁21倾斜设置或垂直设置，可以指进口管50和出口管60的轴线相对于底壁21倾斜设置或垂直设置，当拔插外部管道时，拔插力的至少部分力的方向是沿着电池100的高度方向的。
上述方案中，进口管50和出口管60与外部管道拔插方向倾斜或垂直于底壁21设置，以能够合理利用电池100的高度空间实现拔插，不占用额外的空间，提高电池100的体积能量密度。
根据本申请的一些实施例，参见图3，沿底壁21指向第二箱体30的方向，进口管50和出口管60均不超出第二箱体30。
上述方案中，通过将进口管50和出口管60设置为不超出第二箱体30，以使得进口管50和出口管60与外部管道的拔插位置处于电池100的高度范围内，进而能够合理地利用电池100本身 的高度空间，降低拔插难度。
根据本申请的一些实施例，请参见图6，图6为本申请一些实施例中第一箱体20的局部剖视图。底壁21的内部形成有流道40，进口管50和出口管60均设置于底壁21上。
底壁21内部形成有流道40，可以指底壁21集成有流道40，底壁21不仅可以作为支撑电池单体10的部件，也可以作为容纳换热介质以调节电池单体10的温度的部件。进口管50和出口管60均设置于底壁21且与底壁21内部的流道40连通。
上述方案中，将流道40设置于底壁21的内部，使得底壁21在具备支撑电池单体10的作用的条件下，还可以调节电池单体10的温度，故精简了电池100的结构，有效地提高电池100的体积能量密度。
根据本申请的一些实施例，进口管50与底壁21的连接处、出口管60与底壁21的连接处均位于封闭空间的外侧。
在一些实施例中，参见图5，进口管50和出口管60均为直管，进口管50的远离其开口一端所在的位置可看作进口管50与底壁21的连接处，出口管60的远离其开口一端所在的位置可看作出口管60与底壁21的连接处。
在一些实施例中，底壁21的表面可形成有两个通孔，两个通孔连通底壁21内部的流道40，两个通孔与进口管50和出口管60对应，进口管50设置于底壁21且通过对应的通孔连通流道40，出口管60设置于底壁21且通过对应的通孔连通流道40。进口管50与底壁21的连接处和出口管60与底壁21的连接处可以指形成于底壁21表面的通孔。由于通孔处于封闭空间的外侧，故进口管50和出口管60可在封闭空间的外侧设置于底壁21上。
上述方案中，将进口管50与底壁21的连接处、出口管60与底壁21的连接处设置于封闭空间的外侧，能够避免在第一箱体20或第二箱体30上开孔以将进口管50和出口管60引出至封闭空间的外侧，故可减少对开孔处进行密封的处理的步骤，提高电池100的密封性。
在其他一些实施例中，进口管50与底壁21的连接处、出口管60与底壁21的连接处均可以位于封闭空间内，进口管50和出口管60的部分位于封闭空间内，另一部分穿过第一箱体20或者第二箱体30以处于封闭空间的外侧与外部管道连接。
根据本申请的一些实施例，如图6，底壁21包括层叠设置的第一基板210和第二基板211，第二基板211设置于第一基板210的背离第二箱体30的一侧，第二基板211与第一基板210之间形成有流道40。
沿底壁21的厚度方向z，第一基板210和第二基板211层叠设置，二者之间形成容纳换热介质的流道40。第一基板210较第二基板211接近第二箱体30，进口管50和出口管60可设置于第一基板210的背离于第二基板211的表面并连通流道40。第一基板210和第二基板211可通过粘接或焊接相互连接。
上述方案中，第一基板210和第二基板211层叠设置以形成流道40，使得底壁21结构简单，便于制造。
在其他实施例中，可通过一体成型的方式在底壁21的内部形成出流道40。
根据本申请的一些实施例，如图6，第二基板211面向第一基板210的表面形成有凹槽2110，第一基板210的面向第一基板210的面与凹槽2110共同围成流道40。
第二基板211面向第一基板210的表面可以为底壁21的内壁面，在内壁面设置凹槽2110，能够形成供换热介质流动的流道40，实现对电池单体10的温度调节。在一些实施例中，第一基板210面向第二基板211的表面可以为平整面。在另一些实施例中，第一基板210面向第二基板211的表面也可以设置有凹槽2110，以与第二基板211上的凹槽2110相对设置。为保证第一基板210能够平稳地支撑电池单体10，第一基板210背离于第二基板211的表面可以为平整面。
上述方案中，通过在第二基板211的表面形成凹槽2110，以与第一基板210共同围成流道 40，使得换热介质能够有效地调节电池单体10的温度，提高电池100的可靠性。
根据本申请的一些实施例，请结合图5和图6，第一箱体20还包括第一侧壁22，第一侧壁22设置于底壁21的边缘，第一侧壁22与第二箱体30连接。
第一侧壁22为沿底壁21的厚度方向z凸出于底壁21，且连接于底壁21边缘的部件。第一侧壁22的远离底壁21的一端可以连接第二箱体30。
上述方案中，通过在底壁21上设置第一侧壁22，能够提高第一箱体20的结构强度，且使得电池100具有较大的封闭空间，容纳更多的电池单体10，提高电池100的体积能量密度。
根据本申请的一些实施例，请参见图4和图5，沿底壁21的周向，第一侧壁22为非闭合结构。“第一侧壁22为非闭合结构”，可以指底壁21的部分边缘未设置有第一侧壁22，使得第一侧壁22的首尾两端未闭合，或者说，使得第一侧壁22仅设置于底壁21的部分边缘。
上述方案中，将第一侧壁22设置为非闭合结构，一方面，能够使得第一箱体20具有一定的强度以满足需求；另一方面，当流道40形成于底壁21的内部时，进口管50和出口管60可设置于底壁21的未设置有第一侧壁22的部位，以避免因设置第一侧壁22导致流阻增大(若进口管50和出口管60设置于第一侧壁22上，则因第一侧壁22和底壁21的高度差导致流阻过大)，换热介质无法流过进口管50和出口管60的情况；再一方面，因底壁21的部分边缘未设置第一侧壁22，故第一箱体20的对应该部分的位置不存在拔模斜度，故可不与电池单体10干涉，提高封闭空间的利用率，使得电池100具有较高的体积能量密度。
根据本申请的一些实施例，请参见图7，图7为本申请一些实施例中第一箱体20的俯视图。底壁21包括第一区域212和第二区域213，第一区域212和第二区域213沿第一方向x并排设置，第一侧壁22设置于第一区域212的边缘，第二区域213的边缘未设置有第一侧壁22，第一方向x垂直于底壁21的厚度方向z。进口管50和出口管60均位于第二区域213。
请参见图7，第一箱体20可以为方形箱体，第一方向x可以为第一箱体20的长度方向，第一区域212和第二区域213为沿第一箱体20的长度方向并排设置的两个区域。第一区域212和第二区域213可以均为方形，第一区域212的边缘和第二区域213的边缘共同构成底壁21的边缘。第一区域212的边缘均设置有第一侧壁22，第二区域213的边缘均不设置第一侧壁22。
进口管50和出口管60均位于第二区域213，可以指，进口管50和出口管60处于底壁21的部位不设置第一侧壁22。
上述方案中，第一箱体20的高度空间由第一侧壁22决定，为此将进口管50和出口管60设置在不设置第一侧壁22的第二区域213，能够利用第一箱体20和第二箱体30的高度空间与外部管道拔插，即合理利用电池100本身存在的高度，故可降低拔插难度。
根据本申请的一些实施例，如图7，第一区域212包括第一边缘2120和两个第二边缘2121，两个第二边缘2121沿第二方向y相对设置，第一边缘2120连接两个第二边缘2121，第一侧壁22设置于第一边缘2120和两个第二边缘2121，第二方向y垂直于底壁21的厚度方向z。
第二方向y为垂直于底壁21的厚度方向z，在一些实施例中，第二方向y可以为第一箱体20的宽度方向。沿第二方向y，两个第二边缘2121相对设置，第一边缘2120位于两个第二边缘2121之间且连接两个第一边缘2120，呈U形。在一些实施例中，第二边缘2121的远离第一边缘2120的端部与第二区域213的边缘连接。“第一侧壁22设置于第一边缘2120和两个第二边缘2121”，可以指第一侧壁22设置于第一区域212的三个边缘(第一边缘2120和两个第二边缘2121)，以呈U型的非闭合结构。
上述方案中，通过将第一侧壁22设置在第一边缘2120和两个第二边缘2121，能够提高第一箱体20的结构强度，提高电池100的结构强度，使得电池单体10具有较高的可靠性。
在一些实施例中，进口管50和出口管60可设置于第二区域213的角部，以降低封闭区域的对应于第二区域213的空间的影响。
根据本申请的一些实施例，两个第二边缘2121均沿第一方向x延伸，第一方向x、第二方 向y和底壁21的厚度方向z两两垂直。
上述方案中，由于第一方向x、第二方向y和底壁21的厚度方向z两两垂直，第一箱体20为方形箱体，较非方形的箱体而言，方形箱体能够高效地被制造，提高电池100的制造效率，且能够容纳更多的电池单体10。
根据本申请的一些实施例，请参见图6，第一箱体20还包括第一翻边23，第一翻边23从第一侧壁22远离底壁21的一端向外延伸，第一侧壁22通过第一翻边23与第二箱体30连接。
在一些实施例中，第一翻边23可通过辊压或折弯的方式形成于第一基板210。
第一翻边23可以指由第一侧壁22的远离底壁21的一端向外延伸，且呈水平或近乎呈水平状，以能够为第二箱体30提供较大接触面的部位。
上述方案中，通过设置第一翻边23，能够方便、有效地连接第一侧壁22和第二箱体30，使得第一侧壁22和第二箱体30之间具有稳固和密封的连接关系，提高封闭空间内的电池单体10的可靠性。
根据本申请的一些实施例，请结合图3和图8，图8为图3中A处的放大图。第二箱体30包括顶壁31、第二侧壁32和第二翻边33，第二侧壁32设置于顶壁31的边缘，第二翻边33从第二侧壁32远离顶壁31的一端向外延伸；第二翻边33与底壁21的未设置第一侧壁22的边缘以及与第一翻边23连接。
顶壁31可以为第二箱体30的主体部分，其可相对底壁21设置，顶壁31至底壁21的方向，可以为电池100的高度方向。
第二侧壁32可以围设于顶壁31的边缘且构成闭合结构，即第二侧壁32围设于顶壁31边缘一圈。由于第二侧壁32围设于顶壁31边缘一圈，故第二箱体30的内部形成有腔室，当第二箱体30与第一箱体20相互连接时，该腔室为封闭空间的一部分。
第二翻边33可以指由第二侧壁32的远离顶壁31的一端向外延伸，且呈水平或近乎呈水平状，以能够为第一箱体20提供较大接触面的部位。
上述方案中，第二箱体30通过第二翻边33与底壁21的未设置第一侧壁22的边缘以及第一翻边23连接，能够提高第一箱体20和第二箱体30的密封性。同时，第二侧壁32围设于顶壁31的边缘，以能够围成一个腔室，进而提高封闭空间的容积，容纳更多的电池单体10，使得电池100具有较高的体积能量密度。
根据本申请的另一些实施例，第二箱体30包括顶壁31、第二侧壁32和第二翻边33，第二侧壁32设置于顶壁31的部分边缘，第二翻边33从第二侧壁32远离顶壁31的一端向外延伸。第二翻边33与底壁21的未设置第一侧壁22的边缘连接，顶壁31的未设置第二侧壁32的边缘与第一翻边23连接。
第二侧壁32可以围设于顶壁31的部分边缘，且其为非闭合结构，第二侧壁32对应于底壁21未设置有第一侧壁22的部位。第二翻边33可以指由第二侧壁32的远离顶壁31的一端向外延伸，且呈水平或近乎呈水平状，以能够为第一箱体20提供较大接触面的部位。
上述方案中，第二箱体30的主体部分呈板状，主体部分的部分边缘设置有第二侧壁32以对应于第一箱体20未设置有第一侧壁22的部位，故第二箱体30具有结构简单，用料成本低的优点。同时，第二箱体30通过第二翻边33连接底壁21的未设置第一侧壁22的边缘，通过呈板状的顶壁31的边缘与第一翻边23连接，能够提高第一箱体20和第二箱体30的密封性，进而提高电池100的可靠性。
根据本申请的一些实施例，请结合图8，在图8中仅示出了第一避让部330，第二避让部331的结构与第一避让部330的结构可以一样，可参见图8理解第二避让部331。第二箱体30包括顶壁31、第二侧壁32和第二翻边33，第二侧壁32设置于顶壁31的边缘，第二翻边33从第二侧壁32远离顶壁31的一端向外延伸。第二翻边33设有第一避让部330和第二避让部331，进口管50和出口管60分别穿过第一避让部330和第二避让部331。
第一避让部330为设置于第二翻边33，用于避让进口管50的部位。当第一箱体20和第二箱体30相互连接时，进口管50能够由第一避让部330穿过，以不影响第二翻边33与第一箱体20的密封性。第二避让部331为设置于第二翻边33，用于避让出口管60的部位。当第一箱体20和第二箱体30相互连接时，出口管60能够由第二避让部331穿过，以不影响第二翻边33与第一箱体20的密封性。
在一些实施例中，第一翻边23和第二翻边33之间设置有密封件80，由于第二翻边33设置有第一避让部330和第二避让部331，故密封件80可以对应地设置避让结构。密封件80呈环状，其围绕封闭空间的边缘设置，以提高第一翻边23与第二箱体30的密封性，提高第二翻边33与第一箱体20的密封性。密封件80可以为橡胶圈。
根据本申请的一些实施例，请参见图8，第一避让部330和第二避让部331为设置于第二翻边33边缘的缺口。
缺口可以指由第二翻边33的边缘向内侧凹陷，以形成能够容许进口管50或出口管60穿过部位。
上述方案中，第一避让部330和第二避让部331为形成于第二翻边33的边缘的缺口，其成型简单方便。
在一些实施例中，密封件80的边缘也对应设置有缺口，实现对进口管50和出口管60的避让。
在其他一些实施例中，第一避让部330和第二避让部331可以为设置于第二翻边33边缘的通孔。
根据本申请的另一些实施例，请参见图9，图9为本申请的另一些实施例中的电池100的立体爆炸图。电池100还包括热管理部件70，流道40设置于热管理部件70，热管理部件70设置于封闭空间内，进口管50和出口管60均设置于热管理部件70。
热管理部件70可以为与底壁21相互独立的部件，热管理部件70为单独的部件，其用于调节电池单体10的温度。在一些实施例中，如图9，热管理部件70可以呈板状，其内部形成有流道40，以容纳并容许换热介质流动。进口管50和出口管60设置于换热介质的表面，并位于第一箱体20朝向第二箱体30的一侧。热管理部件70可以设置在底壁21上，电池单体10设置于热管理部件70的远离底壁21的表面。
在一些实施例中，热管理部件70的部分位于封闭空间内，另一部分穿出于第一箱体20或第二箱体30，以将进口管50和出口管60暴露于封闭空间的外侧。在另一些实施例中，热管理部件70位于封闭空间内，进口管50和出口管60可穿出于第二箱体30。
上述方案中，通过设置独立的热管理部件70，以对电池单体10的温度进行调节，使得电池100具有较高的可靠性。
根据本申请的一些实施例，本申请还提供一种储能装置，包括上文描述的电池100。在一些实施例中，储能装置可以为储能柜，储能柜包括柜体和多个电池100，多个电池100设置在柜体，能够共同向用电设备提供电能。
根据本申请的一些实施例，本申请还提供一种用电设备，包括上文描述的电池100，电池100用于提供电能。
根据本申请的一些实施例，本申请还提供一种电池100，请参见图3-图8。电池100包括电池单体10、第一箱体20、第二箱体30、密封件80、进口管50和出口管60。第一箱体20为电池100的下箱体，第二箱体30为电池100的上箱体。第一箱体20包括底壁21、第一侧壁22和第一翻边23。底壁21呈方形，沿第一箱体20的长度方向，底壁21包括并排设置的第一区域212和第二区域213，第一区域212和第二区域213均呈方形，第一侧壁22设置于第一区域212的边缘，第二区域213的边缘不设置第一侧壁22，第一翻边23从第一侧壁22远离底壁21的一端向外延伸。第一箱体20的底壁21包括层叠设置的第一基板210和第二基板211，第二基板211设置于第 一基板210的背离第二箱体30的一侧，第一侧壁22形成于第一基板210的边缘。第二基板211面向第一基板210的表面形成有凹槽2110，第一基板210的面向第一基板210的面与凹槽2110共同围成流道40。进口管50和出口管60设置于第一基板210上且连通流道40。进口管50和出口管60分别位于第二区域213的两个角部并垂直于第一基板210，沿电池100的高度方向上，进口管50和出口管60的开口端朝向第二箱体30。进口管50和出口管60可与外部管道连接，操作人员或者机械手可施加垂直于第一基板210的力拔插外部管道。外部管道可通过进口管50向流道40输送换热介质，可通过出口管60排出流道40内的换热介质。底壁21支撑于电池单体10，可通过换热介质调节电池100的温度。进口管50与底壁21的连接处、出口管60与底壁21的连接处均位于封闭空间的外侧且位于第一区域212的角部。
第二箱体30包括顶壁31、第二侧壁32和第二翻边33，第二侧壁32设置于顶壁31的边缘且围绕顶壁31一圈，第二翻边33从第二侧壁32远离顶壁31的一端向外延伸。第二翻边33可通过焊接、粘接或者螺栓连接的方式与底壁21的第一区域212的边缘以及与第一翻边23连接，密封件80设置在第一箱体20和第二箱体30的连接处，提高第一箱体20和第二箱体30的连接密封性。第一箱体20和第二箱体30相互连接，并共同构成封闭空间，电池单体10设置于封闭空间中且位于第一区域212上，电池100的电子元器件，如BMS(Battery Management System)可设置在第二区域213上。第二翻边33设有缺口，以避让进口管50和出口管60。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (20)

  1. 一种电池，其中，所述电池包括电池单体、第一箱体、第二箱体以及流道；
    所述第一箱体和所述第二箱体相互连接，以共同围成用于容纳所述电池单体的封闭空间；所述流道用于容纳换热介质，以调节所述电池单体的温度；
    其中，所述电池还包括进口管和出口管，所述进口管和所述出口管均与所述流道连通，所述进口管和所述出口管均处于所述第一箱体的朝向所述第二箱体的一侧，并位于所述封闭空间的外侧。
  2. 根据权利要求1所述的电池，其中，
    所述第一箱体包括底壁，沿所述底壁的厚度方向，所述底壁与所述第二箱体相对设置；
    所述进口管和所述出口管均相对于所述底壁倾斜设置或垂直设置。
  3. 根据权利要求2所述的电池，其中，
    沿所述底壁指向所述第二箱体的方向，所述进口管和所述出口管均不超出所述第二箱体。
  4. 根据权利要求2或3所述的电池，其中，
    所述底壁的内部形成有所述流道，所述进口管和所述出口管均设置于所述底壁上。
  5. 根据权利要求4所述的电池，其中，
    所述进口管与所述底壁的连接处、所述出口管与所述底壁的连接处均位于所述封闭空间的外侧。
  6. 根据权利要求5所述的电池，其中，
    所述底壁包括层叠设置的第一基板和第二基板，所述第二基板设置于所述第一基板的背离所述第二箱体的一侧，所述第二基板与所述第一基板之间形成有所述流道。
  7. 根据权利要求6所述的电池，其中，
    所述第二基板面向所述第一基板的表面形成有凹槽，所述第一基板的面向所述第一基板的面与所述凹槽共同围成所述流道。
  8. 根据权利要求2-7任一项所述的电池，其中，
    所述第一箱体还包括第一侧壁，所述第一侧壁设置于所述底壁的边缘，所述第一侧壁与所述第二箱体连接。
  9. 根据权利要求8所述的电池，其中，
    沿所述底壁的周向，所述第一侧壁为非闭合结构。
  10. 根据权利要求8或9所述的电池，其中，
    所述底壁包括第一区域和第二区域，所述第一区域和所述第二区域沿第一方向并排设置，所述第一侧壁设置于所述第一区域的边缘，所述第二区域的边缘未设置有所述第一侧壁，所述第一方向垂直于所述底壁的厚度方向；
    所述进口管和所述出口管均位于所述第二区域。
  11. 根据权利要求10所述的电池，其中，
    所述第一区域包括第一边缘和两个第二边缘，两个所述第二边缘沿第二方向相对设置，所述第一边缘连接两个所述第二边缘，所述第一侧壁设置于所述第一边缘和两个所述第二边缘，所述第二方向垂直于所述底壁的厚度方向。
  12. 根据权利要求11所述的电池，其中，
    两个所述第二边缘均沿所述第一方向延伸，所述第一方向、所述第二方向和所述底壁的厚度方向两两垂直。
  13. 根据权利要求10-12任一项所述的电池，其中，
    所述第一箱体还包括第一翻边，所述第一翻边从所述第一侧壁远离所述底壁的一端向外延伸，所述第一侧壁通过所述第一翻边与所述第二箱体连接。
  14. 根据权利要求13所述的电池，其中，
    所述第二箱体包括顶壁、第二侧壁和第二翻边，所述第二侧壁设置于所述顶壁的边缘，所述第二翻边从所述第二侧壁远离所述顶壁的一端向外延伸；
    所述第二翻边与所述底壁的未设置所述第一侧壁的边缘以及与所述第一翻边连接。
  15. 根据权利要求13所述的电池，其中，
    所述第二箱体包括顶壁、第二侧壁和第二翻边，所述第二侧壁设置于所述顶壁的部分边缘，所 述第二翻边从所述第二侧壁远离所述顶壁的一端向外延伸；
    所述第二翻边与所述底壁的未设置所述第一侧壁的边缘连接，所述顶壁的未设置所述第二侧壁的边缘与所述第一翻边连接。
  16. 根据权利要求13-15任一项所述的电池，其中，
    所述第二箱体包括顶壁、第二侧壁和第二翻边，所述第二侧壁设置于所述顶壁的边缘，所述第二翻边从所述第二侧壁远离所述顶壁的一端向外延伸；
    所述第二翻边设有第一避让部和第二避让部，所述进口管和所述出口管分别穿过所述第一避让部和所述第二避让部。
  17. 根据权利要求16所述的电池，其中，
    所述第一避让部和所述第二避让部为设置于所述第二翻边边缘的缺口。
  18. 根据权利要求1-17任一项所述的电池，其中，
    所述电池还包括热管理部件，所述流道设置于所述热管理部件，所述热管理部件的一部分设置于所述封闭空间内，所述进口管和所述出口管均连接于所述热管理部件。
  19. 一种储能装置，其中，包括根据权利要求1-18任一项所述的电池。
  20. 一种用电设备，其中，包括根据权利要求1-18任一项所述的电池，所述电池用于提供电能。
PCT/CN2023/125239 2022-10-28 2023-10-18 电池、储能装置以及用电设备 Ceased WO2024088136A1 (zh)

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