WO2023004750A1 - 电池、用电设备、制备电池的方法和设备 - Google Patents

电池、用电设备、制备电池的方法和设备 Download PDF

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Publication number
WO2023004750A1
WO2023004750A1 PCT/CN2021/109606 CN2021109606W WO2023004750A1 WO 2023004750 A1 WO2023004750 A1 WO 2023004750A1 CN 2021109606 W CN2021109606 W CN 2021109606W WO 2023004750 A1 WO2023004750 A1 WO 2023004750A1
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WO
WIPO (PCT)
Prior art keywords
battery
battery cell
cooling system
cell group
signal transmission
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/CN2021/109606
Other languages
English (en)
French (fr)
Inventor
曾智敏
唐彧
杨海奇
王鹏
黄小腾
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 CN202180073918.7A priority Critical patent/CN116457993B/zh
Priority to EP21951346.2A priority patent/EP4181285A4/en
Priority to PCT/CN2021/109606 priority patent/WO2023004750A1/zh
Priority to KR1020237006240A priority patent/KR102853145B1/ko
Priority to JP2023513820A priority patent/JP7484016B2/ja
Publication of WO2023004750A1 publication Critical patent/WO2023004750A1/zh
Priority to US18/358,031 priority patent/US20230369698A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • 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
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple 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
    • H01M10/04—Construction or manufacture in general
    • H01M10/0404—Machines for assembling batteries
    • 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
    • H01M10/62—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
    • H01M10/6554—Rods or plates
    • 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
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • 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
    • H01M50/271—Lids or covers for the racks or secondary casings
    • 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
    • H01M50/298—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the wiring of battery packs
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
    • H01M50/526—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material having a layered structure
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/588—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries outside the batteries, e.g. incorrect connections of terminals or busbars
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/591—Covers
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/593—Spacers; Insulating plates
    • 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
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/691—Arrangements or processes for draining liquids from casings; Cleaning battery or cell casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F17/00—Removing ice or water from heat-exchange apparatus
    • F28F17/005—Means for draining condensates from heat exchangers, e.g. from evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/12—Elements constructed in the shape of a hollow panel, e.g. with channels
    • 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 technical field of batteries, in particular to a battery, an electrical device, a method and a device for preparing a battery.
  • the present application provides a battery, an electrical device, a method and a device for preparing the battery, which can enhance the safety of the battery.
  • a battery including: a battery cell group, including a plurality of battery cells; a cooling system, arranged on the first surface of the battery cell group; a signal transmission component, arranged on the battery On the second surface of the monomer group, the second surface is adjacent to the first surface, and the signal transmission component includes a bussing part and an insulating layer, the insulating layer is used to encapsulate the bussing part, and the insulating The layer has openings, and the bus part is used to electrically connect with the battery cells in the battery cell group at the openings; the covering part is used to cover the signal transmission component to prevent the cooling Condensate generated by the system reaches the signal transmission assembly.
  • a cooling system is provided on the first surface, and a signal transmission component is provided on the second surface adjacent to the first surface, so as to realize the electrical connection between multiple battery cells.
  • the battery also includes a cover for covering the signal transmission component, so that when the cooling system generates condensate, the cover can prevent the condensate from reaching the signal transmission component to avoid a short circuit in the battery , to improve the safety of the battery.
  • the first surface can be the surface with the largest area of the battery cell group.
  • the cooling system when the cooling system is arranged on the first surface, the area of the battery cell group facing the cooling system can be made larger, which can increase The heat dissipation speed of the battery cell group is to achieve a better effect of regulating temperature.
  • the insulating layer extends toward the cooling system to a position close to the cooling system, and is turned away from the cooling system at the position to form the cladding member.
  • the covering part is formed through the insulating layer without adding additional parts, and the structure is relatively simple, which is convenient for processing.
  • the inverted portion of the insulating layer is fixedly connected to the third surface of the battery cell group, and the third surface is parallel to the first surface.
  • the edge of the inverting part of the insulating layer is provided with a hemming area, and the hemming area is used for fixed connection with the third surface, so that the inverting part of the insulating layer and the battery cell.
  • the hemming area may be fixedly connected to the third surface by an adhesive or the like.
  • the insulating layer and the second surface form an angled area facing the cooling system at the inverting position, and the angled area is configured to collect adhesive for bonding the cooling system agent.
  • the corner area can be used as a glue overflow area to collect the overflowing excess adhesive, thereby preventing the adhesive from affecting the battery. influence of other components.
  • the covering member is a cover plate covering the second surface.
  • the signal transmission component of the battery cell group can be covered by the cover plate to prevent condensate from entering the signal transmission component, and the structure is simple and easy to process.
  • the cover plate includes a first connection area for fixed connection with the first surface.
  • the cover plate further includes a second connection area for fixedly connecting with a third surface of the battery cell group, and the third surface is parallel to the first surface.
  • the cover plate When installing and fixing the cover plate, it can be fixed through the first connection area and/or the second connection area, for example, the first connection area is fixed on the first surface by adhesive, and the second connection area is fixed on the first surface by bonding
  • the cooling system is fixed on the third surface by using an adhesive agent, and then the cooling system is fixed on the first surface, so as to realize the fixing between the cover plate and the battery cell group, and the fixing between the cooling system and the battery cell group.
  • a drainage groove is provided on the cover plate for draining the condensate.
  • the condensate can be drained to a position away from the signal transmission component through the drain groove, for example, the condensate can be drained to the bottom of the box or out of the box.
  • a confluence groove is also arranged on the cover plate, and the confluence groove communicates with the liquid drainage groove, and the confluence groove is used to collect the condensate and guide the condensate into the drain. tank.
  • the confluence tank can be arranged at a position close to the cooling system, so as to collect condensate, and the condensate flows through the confluence tank to the drain tank, and then is discharged to a position that does not affect the signal transmission component.
  • the material of the cover plate is insulating material.
  • the material of the cover plate may be the same as or different from that of the insulating layer in the signal transmission component.
  • the battery cell group includes N battery cell columns, the N battery cell columns are arranged along the first direction, and each battery cell column in the N battery cell columns The battery cells are arranged along the second direction, the first direction is perpendicular to the second direction, and N is a positive integer; wherein, the first surface is perpendicular to the first direction, and the second surface is parallel to A plane defined by the first direction and the second direction.
  • a projection of the cooling system covers a projection of the cladding, and the first plane is perpendicular to the first direction.
  • the cooling system can cover the covering part, and the covering part does not affect the installation of the cooling system, and the condensate generated by the cooling system can be better blocked by the covering part.
  • the end of the cooling system close to the cladding is inclined towards the cladding, so that the condensate generated on the surface of the cooling system can slide down through the sloping part, thus avoiding condensation
  • the liquid accumulates on the surface of the cooling system and cannot be discharged, further improving the safety of the battery.
  • an electric device including: the battery in the first aspect, configured to provide electric energy.
  • the electric device is a vehicle, ship or spacecraft.
  • a method for preparing a battery including: providing a battery cell group, the battery cell group including a plurality of battery cells; providing a cooling system, the cooling system being arranged on the battery cell group on the first surface of the battery cell group; a signal transmission component is provided, the signal transmission component is arranged on the second surface of the battery cell group, the second surface is adjacent to the first surface, and the signal transmission component includes A bus component and an insulating layer, the insulating layer is used to encapsulate the bus component, the insulating layer has an opening, and the bus component is used to communicate with the battery cells in the battery cell group at the opening Electrical connection; providing a covering member, the covering member is used to cover the signal transmission component to prevent the condensate generated by the cooling system from reaching the signal transmission component.
  • a device for preparing a battery including a module for performing the method of the third aspect above.
  • a cooling system is provided on the first surface of the battery cell group included in the battery, and a signal transmission component is provided on the second surface adjacent to the first surface, so as to realize multiple battery cells.
  • the battery also includes a cover for covering the signal transmission component, so that when the cooling system generates condensate, the cover can prevent the condensate from reaching the signal Transport components to avoid short circuits in the battery and improve the safety of the battery.
  • Fig. 1 is a schematic structural view of a vehicle disclosed in an embodiment of the present application
  • Fig. 2 is a schematic diagram of an exploded structure of a battery disclosed in an embodiment of the present application
  • Fig. 3 is a schematic diagram of an exploded structure of a battery cell disclosed in an embodiment of the present application.
  • Fig. 4 is a schematic diagram of an exploded structure of another battery disclosed in an embodiment of the present application.
  • Fig. 5 is an exploded schematic view of some internal components of a battery disclosed in an embodiment of the present application.
  • Fig. 6 is an exploded schematic view of another internal battery assembly disclosed in an embodiment of the present application.
  • Fig. 7 is a schematic diagram of some internal components of a battery disclosed in an embodiment of the present application after installation;
  • Fig. 8 is a partially enlarged view of area A in Fig. 7;
  • Fig. 9 is a schematic flowchart of a method for preparing a battery disclosed in an embodiment of the present application.
  • Fig. 10 is a schematic block diagram of a device for preparing a battery disclosed in an embodiment of the present application.
  • 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, which are not limited in the embodiments of the present application.
  • the battery cell can be in the form of a cylinder, a flat body, a cuboid or other shapes, which is not limited in this embodiment of the present application.
  • Battery cells are generally divided into three types according to packaging methods: cylindrical battery cells, square square battery cells and pouch battery cells, which are not limited in this embodiment of the present application.
  • 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.
  • batteries mentioned in this application may include battery packs and the like.
  • Batteries generally include a case for enclosing one or more battery cells. The box can prevent liquid or other foreign objects from affecting the charging or discharging of the battery cells.
  • the battery cell includes an electrode assembly and an electrolyte, and the electrode assembly includes a positive electrode sheet, a negative electrode sheet, and a separator.
  • a battery cell works primarily by moving metal ions between the positive and negative plates.
  • 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 current collector without the positive electrode active material layer protrudes from the current collector coated with the positive electrode active material layer.
  • the current collector coated with the positive electrode active material layer serves 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 cobaltate, 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 current collector coated with the negative electrode active material layer serves as the negative electrode tab.
  • the material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon or silicon.
  • the number of positive pole tabs is multiple and stacked together, and the number of negative pole tabs is multiple and stacked together.
  • the material of the isolation film can be polypropylene (PP) or polyethylene (PE).
  • the electrode assembly may be a wound structure or a laminated structure, which is not limited in the embodiment of the present application.
  • the battery may include multiple battery cells, wherein the multiple battery cells may be connected in series, in parallel or in parallel, and the hybrid connection refers to a mixture of series and parallel connections.
  • a plurality of battery cells can be connected in series, parallel or mixed to form a battery module, and then a plurality of battery modules can be connected in series, parallel or mixed to form a battery. That is to say, multiple battery cells can directly form a battery, or form a battery module first, and then form a battery from the battery module.
  • the battery is further arranged in the electric device to provide electric energy for the electric device.
  • a cooling system can be provided in the battery.
  • the cooling system is used to accommodate the cooling medium to lower the temperature of the battery cells.
  • the cooling system may also be called a cooling component or a cooling plate, and the cooling medium may also be called a cooling fluid, and more specifically, it may be called a cooling liquid or a cooling gas.
  • the cooling fluid is circulated for better temperature regulation.
  • the cooling medium may be water, a mixture of water and ethylene glycol, or air. When the cooling medium is water, the cooling system can also be called a water-cooled plate.
  • the battery in addition to the above-mentioned battery cells and the cooling system, signal transmission components and other components of the battery may also be included.
  • a structure for fixing the battery cells may also be provided in the case.
  • the shape of the box can be determined according to the number of battery cells to be accommodated. In some embodiments, the box may be square, with six walls.
  • the signal transmission component of the embodiment of the present application may be used to transmit signals such as the voltage and/or temperature of the battery cell.
  • the signal transmission assembly may include a confluence component, which is used to realize the electrical connection between a plurality of battery cells, such as parallel connection, series connection or hybrid connection.
  • the bus component can realize the electrical connection between the battery cells by connecting the electrode terminals of the battery cells.
  • the bus member may be fixed to the electrode terminal of the battery cell by welding.
  • the bussing part transmits the voltage of the battery cells, and a higher voltage will be obtained after multiple battery cells are connected in series.
  • the electrical connection formed by the bussing part can also be called a "high voltage connection".
  • the signal transmission assembly may also include a sensor device for sensing the state of the battery cell, for example, the sensor device may be used to measure and transmit sensor signals such as temperature and state of charge of the battery cell.
  • the electrical connection components in the battery may include a current flow component and/or a sensor device.
  • Bus components and sensing devices can be encapsulated in an insulating layer to form a signal transmission assembly.
  • the signal transmission component can be used to transmit the voltage of the battery cell and/or the sensing signal.
  • the signal transmission component does not have an insulating layer at the connection with the electrode terminal of the battery cell, that is, the insulating layer has an opening here, so as to be connected with the electrode terminal of the battery cell.
  • the battery is easy to generate condensation in the battery box in a high-temperature and high-humidity environment, this will cause safety hazards to the signal transmission components in the battery, and may cause electrical connection failure and failure of the signal transmission components, thereby affecting the safety of the battery .
  • this will cause safety hazards to the signal transmission components in the battery, and may cause electrical connection failure and failure of the signal transmission components, thereby affecting the safety of the battery .
  • the high-temperature and high-humidity gas in the battery encounters the cooling system in the battery box, condensate will be generated. If the condensate drips onto the electrical connection area in the battery, it may affect the safety of the battery.
  • the present application provides a technical solution, in which a coating is provided outside the signal transmission component that realizes the electrical connection of the battery to cover the signal transmission component, thereby preventing the condensate generated by the cooling system from reaching the electrical connection area, This keeps the condensate from affecting the electrical connection areas within the battery and does not affect the signal transmission components, thereby enhancing the safety of the battery.
  • a pressure balancing mechanism may be provided on the battery box to balance the pressure inside and outside the box. For example, when the pressure inside the box is higher than outside the box, the gas inside the box can flow out of the box through the pressure balance mechanism; when the pressure inside the box is lower than outside the box, the gas outside the box can flow through the pressure balance mechanism.
  • the balancing mechanism flows into the interior of the box.
  • the above-described components in the battery case should not be construed as limiting the embodiment of the present application, that is, the battery case in the embodiment of the present application may include the above-mentioned components, or may not include the above components.
  • batteries such as mobile phones, portable devices, notebook computers, battery cars, electric toys, electric tools, electric vehicles, ships and spacecraft, etc.
  • spacecraft include Airplanes, rockets, space shuttles and spaceships, etc.
  • FIG. 1 it is a schematic structural diagram of a vehicle 1 according to an embodiment of the present application.
  • the vehicle 1 can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or Extended range cars, etc.
  • a motor 40 , a controller 50 and a battery 10 can be arranged inside the vehicle 1 , and the controller 50 is used to control the battery 10 to supply power to the motor 40 .
  • the battery 10 may be provided at the bottom or front or rear of the vehicle 1 .
  • the battery 10 can be used for power supply of the vehicle 1 , for example, the battery 10 can be used as an operating power source of the vehicle 1 , for a circuit system of the vehicle 1 , for example, for starting, navigating and running power requirements of the vehicle 1 .
  • the battery 10 can not only be used as an operating power source for the vehicle 1 , but can also be used as a driving power source for the vehicle 1 , replacing or partially replacing fuel oil or natural gas to provide driving power for the vehicle 1 .
  • the battery 10 may include multiple battery cells.
  • FIG. 2 which is a schematic structural diagram of a battery 10 according to an embodiment of the present application, the battery 10 may include at least one battery module 200 .
  • the battery module 200 includes a plurality of battery cells 20 .
  • the battery 10 may further include a box body 11 , the inside of which is a hollow structure, and a plurality of battery cells 10 are accommodated in the box body 11 .
  • the box body 11 may include two parts, referred to here as a first part 111 (upper box body) and a second part 112 (lower box body), and the first part 111 and the second part 112 are fastened together.
  • the shapes of the first part 111 and the second part 112 may be determined according to the combined shape of a plurality of battery cells 20 , and at least one of the first part 111 and the second part 112 may have an opening.
  • both the first part 111 and the second part 112 can be hollow cuboids and only one face is an opening face, the opening of the first part 111 and the opening of the second part 112 are arranged oppositely, and the first part 111 and the opening of the second part 112 are arranged oppositely.
  • the second parts 112 are interlocked to form the box body 11 with a closed chamber. For another example, different from what is shown in FIG.
  • only one of the first part 111 and the second part 112 may be a hollow cuboid with an opening, while the other may be a plate to cover the opening.
  • the second part 112 is a hollow cuboid with only one face as an open face
  • the first part 111 is a plate-shaped example, so the first part 111 is covered at the opening of the second part 112 to form a box with a closed chamber , the cavity can be used to accommodate a plurality of battery cells 20 .
  • a plurality of battery cells 20 are combined in parallel, in series or in parallel and placed in the box 11 formed by fastening the first part 111 and the second part 112 .
  • the battery 10 may also include other structures, which will not be repeated here.
  • the battery 10 may also include a confluence part, which is used to realize electrical connection between a plurality of battery cells 20 , such as parallel connection, series connection or mixed connection.
  • the current-combining component can realize the electrical connection between the battery cells 20 by connecting the electrode terminals of the battery cells 20 .
  • the bus member may be fixed to the electrode terminal of the battery cell 20 by welding. The electric energy of the plurality of battery cells 20 can be further drawn out through the box through the conductive mechanism.
  • the conduction means can also belong to the current-collecting part.
  • the number of battery cells 20 can be set to any value.
  • a plurality of battery cells 20 can be connected in series, in parallel or in parallel to achieve greater capacity or power. Since the number of battery cells 20 included in each battery 10 may be large, for the convenience of installation, the battery cells 20 may be arranged in groups, and each group of battery cells 20 constitutes a battery module. The number of battery cells 20 included in the battery module is not limited and can be set according to requirements.
  • a battery may include a plurality of battery modules, which may be connected in series, in parallel or in parallel.
  • the battery cell 20 includes one or more electrode assemblies 22 , a casing 211 and an end cap 212 .
  • the housing 211 and the end cap 212 form the housing or battery compartment 21 .
  • the walls of the casing 211 and the end caps 212 are called the walls of the battery cell 20 , wherein for the rectangular parallelepiped battery cell 20 , the walls of the casing 211 include a bottom wall and four side walls.
  • the housing 211 depends on the combined shape of one or more electrode assemblies 22.
  • the housing 211 can be a hollow cuboid or cube or cylinder, and one of the surfaces of the housing 211 has an opening so that one or more electrodes Assembly 22 may be placed within housing 211 .
  • one of the planes of the housing 211 is an open surface, that is, the plane does not have a wall so that the inside and outside of the housing 211 communicate.
  • the casing 211 can be a hollow cylinder, the end surface of the casing 211 is an open surface, that is, the end surface does not have a wall so that the inside and outside of the casing 211 communicate.
  • the end cap 212 covers the opening and is connected with the casing 211 to form a closed cavity for placing the electrode assembly 22 .
  • the casing 211 is filled with electrolyte, such as electrolytic solution.
  • the battery cell 20 may further include two electrode terminals 214 , and the two electrode terminals 214 may be disposed on the end cap 212 .
  • the end cap 212 is usually in the shape of a flat plate, and two electrode terminals 214 are fixed on the flat surface of the end cap 212, and the two electrode terminals 214 are positive electrode terminals 214a and negative electrode terminals 214b respectively.
  • Each electrode terminal 214 is respectively provided with a connecting member 23 , or also called a current collecting member 23 , which is located between the end cap 212 and the electrode assembly 22 for electrically connecting the electrode assembly 22 and the electrode terminal 214 .
  • each electrode assembly 22 has a first tab 221a and a second tab 222a.
  • the polarities of the first tab 221a and the second tab 222a are opposite.
  • the first tab 221a is a positive tab
  • the second tab 222a is a negative tab.
  • the first tabs 221a of one or more electrode assemblies 22 are connected to one electrode terminal through a connecting member 23
  • the second tabs 222a of one or more electrode assemblies 22 are connected to another electrode terminal through another connecting member 23 .
  • the positive electrode terminal 214 a is connected to the positive electrode tab through one connection member 23
  • the negative electrode terminal 214 b is connected to the negative electrode tab through the other connection member 23 .
  • the electrode assembly 22 can be arranged as a single one or in multiples. As shown in FIG. 3 , four independent electrode assemblies 22 are arranged in the battery cell 20 .
  • a pressure relief mechanism may also be provided on the battery cell 20 .
  • the pressure relief mechanism is used for actuating to release the internal pressure or temperature when the internal pressure or temperature of the battery cell 20 reaches a threshold.
  • the pressure relief mechanism may be various possible pressure relief structures, which are not limited in this embodiment of the present application.
  • the pressure relief mechanism may be a temperature-sensitive pressure relief mechanism configured to melt when the internal temperature of the battery cell 20 provided with the pressure relief mechanism reaches a threshold; and/or, the pressure relief mechanism may be The pressure-sensitive pressure relief mechanism is configured to rupture when the internal air pressure of the battery cell 20 provided with the pressure relief mechanism reaches a threshold value.
  • the plurality of battery cells 20 included in the battery 10 in the embodiment of the present application can be arranged and arranged in any direction in the box 11 .
  • the rectangular parallelepiped-shaped battery cell 20 as shown in FIG. 3 as an example, as shown in FIG.
  • the end caps 212 of the installed battery cells 20 face the upper case 111 , while the bottom walls of the housings 211 of the battery cells 20 face the lower case 112 .
  • a plurality of battery cells 20 as shown in FIG. 3 can also be arranged laterally in the box.
  • FIG. 4 shows another exploded schematic view of the battery 10 according to an embodiment of the present application.
  • a plurality of battery cells 20 can be horizontally arranged in the box.
  • the battery 10 may include a plurality of battery cells 20 , and the plurality of battery cells 20 may be arranged in multiple layers.
  • FIG. 4 takes two layers of battery cells 20 as an example.
  • the sidewall with the largest area among the side walls of each battery cell 20 in the uppermost layer is facing the opening of the lower box body 112, that is, facing the upper box body 111 ( Not shown in FIG.
  • the side walls with the largest area of the side walls of each battery cell 20 in the bottom layer face the lower box 112
  • the bottom wall that is, the wall facing the opening in the lower box 112. That is to say, as shown in FIG. 3 and FIG. 4 , one end of the end caps 212 of the plurality of battery cells 20 faces the side wall of the lower case 112 , that is, faces the wall adjacent to the opening in the lower case 112 , thus, Compared with the installation method of the battery cells 20 shown in FIG. 2 , the installation method shown in FIG. 4 is more conducive to the heat dissipation of the battery cells 20 .
  • a cooling system 30 may also be provided in the battery 10 to ensure the temperature of the battery 10 .
  • the cooling system 30 can be arranged above the plurality of battery cells 20 , so that the side walls of the battery cells 20 with larger areas face the cooling system 30 , increasing the cooling capacity of the battery cells 20 .
  • the heat dissipation area is more conducive to the heat dissipation of the battery cells 20 .
  • an upper case 111 may be provided above the cooling system 30, so that the upper case 111 and the lower case 112 are fastened to form the case of the battery 10; or, the cooling component 30 may be integrated on the upper In the case 111 , to reduce the occupied space, that is, the cooling system 30 can be used as the upper case 111 to fasten the lower case 112 to form the case 11 of the battery 10 .
  • the cooling system 30 produces When the condensate drips, it is likely to cause a safety hazard to the electrical connection area in the battery 10 and affect the safety of the battery 10 . Specifically, when the high-temperature and high-humidity gas in the battery 10 encounters the cooling system 30 in the case 11 of the battery 10, condensate will be generated. If the condensate drops onto the electrical connection area in the battery 10, it may Affect the safety of the battery 10.
  • the embodiment of the present application provides a battery 10 that can solve the above problems.
  • FIG. 5 shows a partially exploded schematic diagram of the battery 10 of the embodiment of the present application.
  • the battery 10 of the embodiment of the present application may include a battery cell group 201.
  • the battery cell group 201 may include a plurality of battery cells 20 .
  • FIG. 5 takes a battery cell group 201 as an example, and the battery cell group 201 may include four battery cells 20 .
  • the battery cell group 201 may include N battery cell columns, where N is a positive integer, and the N battery cell columns are arranged along the first direction X.
  • N 2
  • the battery cells 20 of each battery cell row in the N battery cell rows can be arranged along the second direction Y, and the first direction X is perpendicular to the second direction Y.
  • the battery 10 further includes: a cooling system 30 disposed on the first surface 2111 of the battery cell group 201 .
  • the first surface 2111 may refer to any surface of the battery cell group 201 according to the direction in which the plurality of battery cells 20 are arranged in the case 11 of the battery 10 .
  • the cooling system 30 can be arranged above the side wall with the largest area as shown in FIG.
  • the side of 201 facing the cooling system 30 is the first side 2111
  • the first side 2111 is the side with the largest area of the battery cell group 201.
  • the first side 2111 is perpendicular to the first side
  • One direction is X, which can increase the heat dissipation rate of the battery cell group 201 and achieve a better temperature regulation effect.
  • the battery 10 may further include a signal transmission component 24 disposed on the second surface 2112 of the battery cell group 201 , wherein the second surface 2112 is adjacent to the first surface 2111 .
  • the signal transmission component 24 can be used to realize the transmission of the voltage and/or temperature signal of the battery cell 20 .
  • the signal transmission component 24 may include a bus component 241 and an insulating layer 242.
  • the insulating layer 242 is used to encapsulate the bus component 241.
  • the insulating layer 242 has an opening (not shown), and the bus component 241 is used to communicate with the battery at the opening.
  • the battery cells 20 in the cell group 201 are electrically connected.
  • the insulating layer 242 in the embodiment of the present application can encapsulate the current flow component 241 by means of heat and pressure, and by setting openings, the current flow component 241 can be realized in the battery cell group 201 through the opening. Electrical connections between battery cells 20 .
  • the signal transmission component 24 of the embodiment of the present application can be used to realize various forms of electrical connection between the battery cells 20 .
  • the electrical connection area in the battery 10 may include the area provided with the bus member 241.
  • the sensor device for sensing the state of the battery cell 20 may also be provided in the battery 10, and the electrical connection area in the battery 10 may also be A region where a sensing device is provided may be included.
  • the signal transmission component 24 of the embodiment of the present application may include a sensor device, and the insulating layer 242 may also be used to encapsulate the sensor device.
  • the battery 10 may further include: a covering member 25 for covering the signal transmission component 24 to prevent the condensate generated by the cooling system 30 from reaching the signal transmission component 24 .
  • the cooling system 30 is provided on the first surface 2111, and the signal transmission component 24 is provided on the second surface 2112 adjacent to the first surface 2111, so as to implement multiple battery cells 20
  • the battery 10 also includes a cover 25 for covering the signal transmission component 24, so that when the cooling system 30 generates condensation, the cover 25 can block the The condensate reaches the signal transmission component 24 to avoid short circuit of the battery 10 and improve the safety of the battery 10 .
  • the covering member 25 may be a cover plate capable of covering the second surface 2112 where the signal transmission component 24 is located.
  • a cover plate 25 capable of covering the second surface 2112 may be provided for the battery 10 as the covering member 25 .
  • any insulating material can be selected for the cover plate 25.
  • the cover plate 25 can be selected from the same or different insulating material as that of the insulating layer 242, which is not limited in this embodiment of the present application.
  • the cover plate 25 can be fixed to the battery cell group 201 in various ways.
  • the cover plate 25 may include a first connecting area 251 for fixed connection with the first surface 2111; further, the cover plate 25 may also include a second connecting area 252 for connecting with the first surface 2111.
  • the third surface 2113 of the battery cell group 201 is fixedly connected, wherein the third surface 2113 is parallel to the first surface 2111 , and the third surface 2113 is adjacent to the second surface 2112 .
  • the first connection area 251 and/or the second connection area 252 may be formed by bending both ends of the cover plate 25 in the first direction X. Referring to FIG.
  • the cover plate 25 when installing the cover plate 25, the cover plate 25 can be fixed on the second surface 2112 where the signal transmission component 24 is located through the first connection area 251 and/or the second connection area 252, for example, the double Adhesives such as surface glue fix the first connection area 251 and/or the second connection area 252 on the corresponding first surface 2111 and/or third surface 2113 respectively, and then through the adhesive or the like, the cooling system 30 is fixed on the first surface 2111, so as to realize the fixing of the cover plate 25 and the battery cell group 201 and the fixing of the cooling system 30 and the battery cell group 201, but the embodiment of the present application is not limited thereto.
  • the double Adhesives such as surface glue fix the first connection area 251 and/or the second connection area 252 on the corresponding first surface 2111 and/or third surface 2113 respectively, and then through the adhesive or the like, the cooling system 30 is fixed on the first surface 2111, so as to realize the fixing of the cover plate 25 and the battery cell group 201 and the fixing of the cooling system
  • a drain groove 253 may also be provided on the cover plate 25 of the embodiment of the present application for draining condensate, for example, the condensate may be drained away from the signal
  • the transfer assembly 24 is positioned, for example, to drain condensate to the bottom of the tank 11 , or out of the tank 11 .
  • a confluence groove 254 may also be provided on the cover plate 25 , the confluence groove 254 communicates with the drain groove 253 , and the confluence groove 254 is used to collect condensate and guide the condensate into the drain groove 253 .
  • the confluence tank 254 can be closer to the cooling system 30 than the drain tank 253, so as to collect condensate; the collected condensate is discharged to other locations through the drain tank 253, so as to prevent the condensate from affecting the signal transmission components. twenty four.
  • the covering member 25 in the embodiment of the present application may also be a part of the insulating layer 242 .
  • FIG. 6 shows another exploded schematic diagram of some components of the battery 10 according to the embodiment of the present application.
  • FIG. 7 is a schematic diagram of various components in FIG. 6 after installation, and
  • FIG. 8 is a partial enlarged view of area A in FIG. 7 .
  • the covering member 25 of the embodiment of the present application can also be formed by inverting the insulating layer 242 . In this way, the covering member 25 can be directly formed from the insulating layer 242 , which simplifies the structure and facilitates processing.
  • the insulating layer 242 extends toward the cooling system 30 to a position close to the cooling system 30 , and turns back at this position, that is, turns away from the cooling system 30 at this position, To form the covering member 25 to cover the second surface 2112 .
  • a part that can be turned over and covers the second surface 2112 can be reserved on the insulating layer 242, and then the insulating layer 242 and the bus component 241 are processed by hot pressing to form a signal transmission component.
  • a part of the insulating layer 242 encapsulates the bus member 214 and is fixed on the end cover 212 of the battery cell 20, while the reserved part of the insulating layer 242 can be turned over to form a covering member 25 covering the second surface 2112, and then It can achieve the effect of isolating condensate.
  • the structure does not require additional components, the processing process is simple, and the installation is more convenient.
  • the inverted portion of the insulating layer 242 can be fixedly connected to the third surface 2113 of the battery cell group 201 , so as to realize the fixing of the inverted portion and the battery cell group 201 .
  • the edge of the turned part of the insulating layer 242 can be provided with a hemming area 2421, and the hemming area 2421 is fixedly connected to the third surface 2113, thereby realizing the turning part of the insulating layer 242 and the battery cell.
  • the hemming area 2421 can be fixed to the third surface 2113 by adhesive.
  • the insulating layer 242 and the second surface 2112 may form an angled area 2422 facing the cooling system 30 at the flipped position, and the angled area 2422 is configured to collect heat for bonding the cooling system 30 .
  • Adhesive in this way, when the cooling system 30 is fixed on the first surface 2111 by gluing, the angled area 2422 can be used as a glue overflow area, which can be used to collect the excess adhesive that overflows , to avoid the influence of the binder on other components in the battery 10 .
  • the covering part 25 can be arranged within the coverage of the cooling system 30 .
  • the projection of the cooling system 30 can completely cover the projection of the cladding 25, so that the cladding 25 does not affect the installation of the cooling system 30, Moreover, the condensate generated by the cooling system 30 can be better blocked by the cladding 25 .
  • the end of the cooling system 30 in the embodiment of the present application close to the covering part 25 may be inclined toward the covering part 25 .
  • an inclined section 31 may be provided at the end of the cooling system 30 close to the cladding 25, and the inclined section 31 is inclined toward the cladding 25, so that the cooling The condensate produced on the surface of the system 30 can slide down through the inclined section 31, which can prevent the condensate from accumulating on the surface of the cooling system 30 and cannot be discharged, and the inclined section 31 extends away from the signal transmission component 24, which can also prevent the condensate from being discharged. A large number of drops fall near the signal transmission component 24, which improves the safety of the signal transmission component 24.
  • the cooling system 30 is provided on the first surface 2111, and the signal transmission component 24 is provided on the second surface 2112 adjacent to the first surface 2111, so as to implement multiple battery cells 20
  • the battery 10 also includes a cover 25 for covering the signal transmission component 24, so that when the cooling system 30 generates condensation, the cover 25 can block the The condensate reaches the signal transmission component 24 to avoid short circuit of the battery 10 and improve the safety of the battery 10 .
  • An embodiment of the present application also provides an electric device, which may include the battery 10 in the foregoing embodiments, so as to provide electric energy for the electric device.
  • the electric device may be a vehicle 1 , a ship or a spacecraft.
  • FIG. 9 shows a schematic flowchart of a method 300 for preparing a battery according to an embodiment of the present application.
  • the method 300 may include: 310, providing a battery cell group 201, the battery cell group 201 including a plurality of battery cells 20; 320, providing a cooling system 30, the cooling system 30 is disposed on On the first surface 2111 of the battery cell group 201; 330, a signal transmission component 24 is provided, and the signal transmission component 24 is arranged on the second surface 2112 of the battery cell group 201, and the second surface 2112 Adjacent to the first surface 2111, the signal transmission component 24 includes a bus component 241 and an insulating layer 242, the insulating layer 242 is used to encapsulate the bus component 241, the insulating layer 242 has an opening, the The confluence component 241 is used to electrically connect the battery cells 20 in the battery cell group 201 at the opening; 340, providing a covering member 25, and the covering member 25 is used to cover the signal transmission
  • FIG. 10 shows a schematic block diagram of a device 400 for preparing a battery according to an embodiment of the present application.
  • the device 400 for preparing a battery may include: a providing module 410 .
  • the providing module 410 is used to: provide a battery cell group 201, the battery cell group 201 includes a plurality of battery cells 20; provide a cooling system 30, the cooling system 30 is arranged on the battery cell group 201 On the first surface 2111; provide a signal transmission component 24, the signal transmission component 24 is disposed on the second surface 2112 of the battery cell group 201, the second surface 2112 is adjacent to the first surface 2111,
  • the signal transmission component 24 includes a bus component 241 and an insulating layer 242, the insulating layer 242 is used to encapsulate the bus component 241, the insulating layer 242 has an opening, the bus component 241 is used to Electrically connected to the battery cells 20 in the battery cell group 201; a covering member 25 is provided, and the covering member 25 is used to cover the signal transmission

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Abstract

本申请实施例提供一种电池、用电设备、制备电池的方法和设备。该电池包括：电池单体组(201)，包括多个电池单体(20)；冷却系统(30)，设置于电池单体组(201)的第一面(2111)上；信号传输组件(24)，设置于电池单体组(201)的与第一面(2111)相邻的第二面(2112)上，包括汇流部件(241)和绝缘层(242)，绝缘层(242)用于封装汇流部件(241)，绝缘层(242)具有开孔，汇流部件(241)用于在开孔处与电池单体组(201)中的电池单体(20)电连接；包覆件(25)，用于包覆信号传输组件(24)以阻挡冷却系统(30)产生的冷凝液到达信号传输组件(24)。本申请的电池、用电设备、制备电池的方法和设备，能够增强电池的安全性。

Description

电池、用电设备、制备电池的方法和设备 技术领域
本申请涉及电池技术领域，特别是涉及一种电池、用电设备、制备电池的方法和设备。
背景技术
随着环境污染的日益加剧，新能源产业越来越受到人们的关注。在新能源产业中，电池技术是关乎其发展的一项重要因素。
在电池技术的发展中，安全问题是一个不可忽视的问题。如果电池的安全问题不能保证，那该电池就无法使用。
电池在高温高湿环境中，容易在电池的箱体内产生冷凝液，造成安全隐患，影响电池的安全性。因此，如何增强电池的安全性，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、用电设备、制备电池的方法和设备，能够增强电池的安全性。
第一方面，提供了一种电池，包括：电池单体组，包括多个电池单体；冷却系统，设置于所述电池单体组的第一面上；信号传输组件，设置于所述电池单体组的第二面上，所述第二面与所述第一面相邻，所述信号传输组件包括汇流部件和绝缘层，所述绝缘层用于封装所述汇流部件，所述绝缘层具有开孔，所述汇流部件用于在所述开孔处与所述电池单体组中的电池单体电连接；包覆件，用于包覆所述信号传输组件以阻挡所述冷却系统产生的冷凝液到达所述信号传输组件。
因此，本申请实施例的电池，在第一面上设置冷却系统，在与第一面相邻的第二面设置信号传输组件，以用于实现多个电池单体之间的电连接，另外，该电池还包括包覆件，以用于包覆该信号传输组件，这样，在冷却系统产生冷凝液的情况下，该包覆件可以阻挡该冷凝液到达信号传输组件，以避免电池发生短路，提高该电池的安全性。
可选地，该第一面可以为电池单体组面积最大的一个表面，这样，将冷却系统设置在该第一面时，可以使得该电池单体组面向冷却系统的面积更大，可以增加该电池单体组的散热速度，以达到更好的调节温度的效果。
在一些实施例中，所述绝缘层向所述冷却系统延伸至靠近所述冷却系统的位置， 并在所述位置朝远离所述冷却系统的方向翻转形成所述包覆件。
通过绝缘层形成包覆件，无需增加额外部件，结构相对简单，便于加工。
在一些实施例中，所述绝缘层的翻转部分与所述电池单体组的第三面固定连接，所述第三面与所述第一面平行。
在一些实施例中，所述绝缘层的翻转部分的边缘设置有折边区域，所述折边区域用于与所述第三面固定连接，进而可以实现该绝缘层的翻转部分与电池单体组之间的固定，也就是包覆件与电池单体组之间的固定。
可选地，折边区域可以通过粘结剂等与第三面固定连接。
在一些实施例中，所述绝缘层在翻转处与所述第二面形成朝向所述冷却系统的夹角区，所述夹角区被配置为收集用于粘接所述冷却系统的粘接剂。
在采用粘结剂通过胶粘的方式将冷却系统固定在第一面上时，该夹角区可以作为溢胶区，以用于收集溢出的多余粘结剂，进而避免该粘结剂对电池内其他部件的影响。
在一些实施例中，所述包覆件为包覆所述第二面的盖板。
通过盖板可以包覆电池单体组的信号传输组件，以阻隔冷凝液进入信号传输组件，结构简单，易于加工。
在一些实施例中，所述盖板包括第一连接区域，用于与所述第一面固定连接。
在一些实施例中，所述盖板还包括第二连接区域，用于与所述电池单体组的第三面固定连接，所述第三面与所述第一面平行。
在安装固定该盖板时，可以通过该第一连接区域和/或第二连接区域进行固定，例如，将第一连接区域通过粘结剂固定在第一面，将第二连接区域通过粘结剂固定在第三面，再通过例如粘结剂等将冷却系统固定在第一面，进而实现该盖板与电池单体组之间的固定以及冷却系统与电池单体组之间的固定。
在一些实施例中，所述盖板上设置有排液槽，用于引流所述冷凝液。例如，可以通过该排液槽将冷凝液排至远离信号传输组件的位置，例如，可以将冷凝液排至箱体底部，或者排出箱体。
在一些实施例中，所述盖板上还设置有汇流槽，所述汇流槽与所述排液槽连通，所述汇流槽用于收集所述冷凝液并将所述冷凝液导入所述排液槽。
具体地，可以将汇流槽设置在靠近冷却系统的位置，以便于收集冷凝液，该冷凝液经过汇流槽流至排液槽，进而排至不影响信号传输组件的位置。
在一些实施例中，所述盖板的材料为绝缘材料。
可选地，该盖板的材料可以与信号传输组件中的绝缘层的材料相同或者不同。
在一些实施例中，所述电池单体组包括N个电池单体列，所述N个电池单体列沿第一方向排列，所述N个电池单体列中的每个电池单体列的电池单体沿第二方向排列，所述第一方向垂直于所述第二方向，N为正整数；其中，所述第一面垂直于所述第一方向，所述第二面平行于所述第一方向和所述第二方向确定的平面。
在一些实施例中，沿第一方向，所述冷却系统的投影覆盖所述包覆件的投影，所述第一面垂直于所述第一方向。
这样，冷却系统能够覆盖该包覆件，该包覆件也不影响冷却系统的安装，并且，该冷却系统产生的冷凝液可以被包覆件更好的阻隔在外。
在一些实施例中，所述冷却系统靠近所述包覆件的端部朝向所述包覆件倾斜设置，这样，在冷却系统的表面产生的冷凝液可以经过该倾斜部分滑落，这样可以避免冷凝液在冷却系统表面聚集无法排出，进一步提高电池的安全性。
第二方面，提供了一种用电设备，包括：第一方面中的电池，用于提供电能。
在一些实施例中，所述用电设备为车辆、船舶或航天器。
第三方面，提供了一种制备电池的方法，包括：提供电池单体组，所述电池单体组包括多个电池单体；提供冷却系统，所述冷却系统设置于所述电池单体组的第一面上；提供信号传输组件，所述信号传输组件设置于所述电池单体组的第二面上，所述第二面与所述第一面相邻，所述信号传输组件包括汇流部件和绝缘层，所述绝缘层用于封装所述汇流部件，所述绝缘层具有开孔，所述汇流部件用于在所述开孔处与所述电池单体组中的电池单体电连接；提供包覆件，所述包覆件用于包覆所述信号传输组件以阻挡所述冷却系统产生的冷凝液到达所述信号传输组件。
第四方面，提供了一种制备电池的设备，包括执行上述第三方面的方法的模块。
本申请实施例的技术方案，在电池中包括的电池单体组的第一面上设置冷却系统，在与第一面相邻的第二面设置信号传输组件，以用于实现多个电池单体之间的电连接，另外，该电池还包括包覆件，以用于包覆该信号传输组件，这样，在冷却系统产生冷凝液的情况下，该包覆件可以阻挡该冷凝液到达信号传输组件，以避免电池发生短路，提高该电池的安全性。
附图说明
图1是本申请一实施例公开的一种车辆的结构示意图；
图2是本申请一实施例公开的一种电池的分解结构示意图；
图3是本申请一实施例公开的一种电池单体的分解结构示意图；
图4是本申请一实施例公开的另一种电池的分解结构示意图；
图5是本申请一实施例公开的一种电池内部部分组件的分解示意图；
图6是本申请一实施例公开的另一种电池内部部分组件的分解示意图；
图7是本申请一实施例公开的一种电池内部部分组件在安装后的示意图；
图8是图7中区域A的局部放大图；
图9是本申请一实施例公开的一种制备电池的方法的示意性流程图；
图10是本申请一实施例公开的一种制备电池的设备的示意性框图；
在附图中，附图并未按照实际的比例绘制。
具体实施方式
下面结合附图和实施例对本申请的实施方式作进一步详细描述。以下实施例的详细描述和附图用于示例性地说明本申请的原理，但不能用来限制本申请的范围，即本申请不限于所描述的实施例。
在本申请的描述中，需要说明的是，除非另有说明，“多个”的含义是两个以上；术语“上”、“下”、“左”、“右”、“内”、“外”等指示的方位或位置关系仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”、“第三”等仅用于描述目的，而不能理解为指示或暗示相对重要性。“垂直”并不是严格意义上的垂直，而是在误差允许范围之内。“平行”并不是严格意义上的平行，而是在误差允许范围之内。
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。
下述描述中出现的方位词均为图中示出的方向，并不是对本申请的具体结构进行限定。在本申请的描述中，还需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”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。对于本领域的普通技术人员而言，可视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：单独存在A，同时存在A和B，单独存在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。
本申请中，电池单体可以包括锂离子二次电池、锂离子一次电池、锂硫电池、钠锂离子电池、钠离子电池或镁离子电池等，本申请实施例对此并不限定。电池单体可呈圆柱体、扁平体、长方体或其它形状等，本申请实施例对此也不限定。电池单体一般按封装的方式分成三种：柱形电池单体、方体方形电池单体和软包电池单体，本申请实施例对此也不限定。
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电池包等。电池一般包括用于封装一个或多个电池单体的箱体。箱体可以避免液体或其他异物影响电池单体的充电或放电。
电池单体包括电极组件和电解液，电极组件包括正极片、负极片和隔离膜。电池单体主要依靠金属离子在正极片和负极片之间移动来工作。正极片包括正极集流体和正极活性物质层，正极活性物质层涂覆于正极集流体的表面，未涂敷正极活性物质层的集流体凸出于已涂覆正极活性物质层的集流体，未涂敷正极活性物质层的集流体作为正极极耳。以锂离子电池为例，正极集流体的材料可以为铝，正极活性物质可以 为钴酸锂、磷酸铁锂、三元锂或锰酸锂等。负极片包括负极集流体和负极活性物质层，负极活性物质层涂覆于负极集流体的表面，未涂敷负极活性物质层的集流体凸出于已涂覆负极活性物质层的集流体，未涂敷负极活性物质层的集流体作为负极极耳。负极集流体的材料可以为铜，负极活性物质可以为碳或硅等。为了保证通过大电流而不发生熔断，正极极耳的数量为多个且层叠在一起，负极极耳的数量为多个且层叠在一起。隔离膜的材质可以为聚丙烯(PP)或聚乙烯(PE)等。此外，电极组件可以是卷绕式结构，也可以是叠片式结构，本申请实施例并不限于此。
为了满足不同的电力需求，电池可以包括多个电池单体，其中，多个电池单体之间可以串联或并联或混联，混联是指串联和并联的混合。可选地，多个电池单体可以先串联或并联或混联组成电池模块，多个电池模块再串联或并联或混联组成电池。也就是说，多个电池单体可以直接组成电池，也可以先组成电池模块，电池模块再组成电池。电池再进一步设置于用电设备中，为用电设备提供电能。
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，还需要考虑电池的安全性。
对于电池单体来说，主要的安全危险来自于充电和放电过程，同时还有适宜的温度设计。为了控制电池单体处于适宜的温度，可以在电池内设置冷却系统。冷却系统用于容纳冷却介质以给电池单体降低温度。冷却系统也可以称为冷却部件或冷却板等，冷却介质也可以称为冷却流体，更具体的，可以称为冷却液或冷却气体。冷却流体是循环流动的，以达到更好的温度调节的效果。可选地，冷却介质可以为水、水和乙二醇的混合液或者空气等。在冷却介质为水时，冷却系统也可以称为水冷板。
在电池的箱体中，除了上文提到的电池单体以及冷却系统外，还可以包括信号传输组件以及电池的其他部件。在一些实施例中，箱体中还可以设置用于固定电池单体的结构。箱体的形状可以根据所容纳的多个电池单体而定。在一些实施例中，箱体可以为方形，具有六个壁。
应理解，本申请实施例的信号传输组件可以用于传输电池单体的电压和/或温度等信号。该信号传输组件可以包括汇流部件，该汇流部件用于实现多个电池单体之间的电连接，例如并联或串联或混联。汇流部件可通过连接电池单体的电极端子实现电池单体之间的电连接。在一些实施例中，汇流部件可通过焊接固定于电池单体的电极端子。汇流部件传输电池单体的电压，多个电池单体串联后会得到较高的电压，相应地，汇流部件形成的电连接也可称为“高压连接”。
除了汇流部件外，该信号传输组件还可以包括用于感测电池单体的状态的传感器件，例如，该传感器件可以用于测量以及传输电池单体的温度、荷电状态等传感信号。在本申请实施例中，电池内的电连接部件可以包括汇流部件和/或传感器件。
汇流部件和传感器件可以封装在绝缘层中，形成信号传输组件。相应地，信号传输组件可用于传输电池单体的电压和/或传感信号。信号传输组件在与电池单体的电极端子的连接处没有绝缘层，即，在此处绝缘层具有开孔，从而与电池单体的电极端子连接。
考虑到电池在高温高湿环境中，容易在电池的箱体内产生冷凝液，这会对电池 内的信号传输组件造成安全隐患，可能导致信号传输组件电连接故障和失效，进而影响电池的安全性。具体而言，电池内高温高湿的气体在遇到电池的箱体内的冷却系统时，会产生冷凝液，该冷凝液若滴到电池内的电连接区域，则可能会影响电池的安全性。
鉴于此，本申请提供了一种技术方案，在实现电池的电连接的信号传输组件的外部设置包覆件，以包覆该信号传输组件，从而阻挡冷却系统产生的冷凝液到达电连接区域，这样可以使冷凝液不影响电池内的电连接区域，不影响信号传输组件，因此能够增强电池的安全性。
在电池中，除了上文提到的各部件外，电池的箱体上还可以设置压力平衡机构，用于平衡箱体内外的压力。例如，当箱体内的压力高于箱体外时，箱体内部的气体可以通过压力平衡机构流到箱体外；当箱体内的压力低于箱体外时，箱体外部的气体可以通过压力平衡机构流入箱体内部。
应理解，以上描述的电池的箱体中的各个部件不应理解为对本申请实施例的限定，也就是说，本申请实施例的用于电池的箱体可以包括上述的部件，也可以不包括上述的部件。
本申请实施例描述的技术方案均适用于各种使用电池的装置，例如，手机、便携式设备、笔记本电脑、电瓶车、电动玩具、电动工具、电动车辆、船舶和航天器等，例如，航天器包括飞机、火箭、航天飞机和宇宙飞船等。
应理解，本申请实施例描述的技术方案不仅仅局限适用于上述所描述的设备，还可以适用于所有使用电池的设备，但为描述简洁，下述实施例均以电动车辆为例进行说明。
例如，如图1所示，为本申请一个实施例的一种车辆1的结构示意图，车辆1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1的内部可以设置马达40，控制器50以及电池10，控制器50用来控制电池10为马达40的供电。例如，在车辆1的底部或车头或车尾可以设置电池10。电池10可以用于车辆1的供电，例如，电池10可以作为车辆1的操作电源，用于车辆1的电路系统，例如，用于车辆1的启动、导航和运行时的工作用电需求。在本申请的另一实施例中，电池10不仅仅可以作为车辆1的操作电源，还可以作为车辆1的驱动电源，替代或部分地替代燃油或天然气为车辆1提供驱动动力。
为了满足不同的使用电力需求，电池10可以包括多个电池单体。例如，如图2所示，为本申请一个实施例的一种电池10的结构示意图，电池10可以包括至少一个电池模块200。电池模块200包括多个电池单体20。电池10还可以包括箱体11，箱体11内部为中空结构，多个电池单体10容纳于箱体11内。如图2所示，箱体11可以包括两部分，这里分别称为第一部分111(上箱体)和第二部分112(下箱体)，第一部分111和第二部分112扣合在一起。第一部分111和第二部分112的形状可以根据多个电池单体20组合的形状而定，第一部分111和第二部分112可以中至少一个具有一个开口。例如，如图2所示，第一部分111和第二部分112均可以为中空长方体且各自只有一个面为开口面，第一部分111的开口和第二部分112的开口相对设置，并且第一部分 111和第二部分112相互扣合形成具有封闭腔室的箱体11。再例如，不同于图2所示，第一部分111和第二部分112中可以仅有一个为具有开口的中空长方体，而另一个为板状，以盖合开口。例如，这里以第二部分112为中空长方体且只有一个面为开口面，第一部分111为板状为例，那么第一部分111盖合在第二部分112的开口处以形成具有封闭腔室的箱体，该腔室可以用于容纳多个电池单体20。多个电池单体20相互并联或串联或混联组合后置于第一部分111和第二部分112扣合后形成的箱体11内。
可选地，电池10还可以包括其他结构，在此不再一一赘述。例如，该电池10还可以包括汇流部件，汇流部件用于实现多个电池单体20之间的电连接，例如并联或串联或混联。具体地，汇流部件可通过连接电池单体20的电极端子实现电池单体20之间的电连接。进一步地，汇流部件可通过焊接固定于电池单体20的电极端子。多个电池单体20的电能可进一步通过导电机构穿过箱体而引出。可选地，导电机构也可属于汇流部件。
根据不同的电力需求，电池单体20的数量可以设置为任意数值。多个电池单体20可通过串联、并联或混联的方式连接以实现较大的容量或功率。由于每个电池10中包括的电池单体20的数量可能较多，为了便于安装，可以将电池单体20分组设置，每组电池单体20组成电池模块。电池模块中包括的电池单体20的数量不限，可以根据需求设置。电池可以包括多个电池模块，这些电池模块可通过串联、并联或混联的方式进行连接。
如图3所示，为本申请一个实施例的一种电池单体20的结构示意图，电池单体20包括一个或多个电极组件22、壳体211和端盖212。壳体211和端盖212形成外壳或电池盒21。壳体211的壁以及端盖212均称为电池单体20的壁，其中对于长方体型电池单体20，壳体211的壁包括底壁和四个侧壁。壳体211根据一个或多个电极组件22组合后的形状而定，例如，壳体211可以为中空的长方体或正方体或圆柱体，且壳体211的其中一个面具有开口以便一个或多个电极组件22可以放置于壳体211内。例如，当壳体211为中空的长方体或正方体时，壳体211的其中一个平面为开口面，即该平面不具有壁体而使得壳体211内外相通。当壳体211可以为中空的圆柱体时，壳体211的端面为开口面，即该端面不具有壁体而使得壳体211内外相通。端盖212覆盖开口并且与壳体211连接，以形成放置电极组件22的封闭的腔体。壳体211内填充有电解质，例如电解液。
该电池单体20还可以包括两个电极端子214，两个电极端子214可以设置在端盖212上。端盖212通常是平板形状，两个电极端子214固定在端盖212的平板面上，两个电极端子214分别为正电极端子214a和负电极端子214b。每个电极端子214各对应设置一个连接构件23，或者也可以称为集流构件23，其位于端盖212与电极组件22之间，用于将电极组件22和电极端子214实现电连接。
如图3所示，每个电极组件22具有第一极耳221a和第二极耳222a。第一极耳221a和第二极耳222a的极性相反。例如，当第一极耳221a为正极极耳时，第二极耳222a为负极极耳。一个或多个电极组件22的第一极耳221a通过一个连接构件23与一个电极端子连接，一个或多个电极组件22的第二极耳222a通过另一个连接构件23与 另一个电极端子连接。例如，正电极端子214a通过一个连接构件23与正极极耳连接，负电极端子214b通过另一个连接构件23与负极极耳连接。
在该电池单体20中，根据实际使用需求，电极组件22可设置为单个，或多个，如图3所示，电池单体20内设置有4个独立的电极组件22。
电池单体20上还可设置泄压机构。泄压机构用于电池单体20的内部压力或温度达到阈值时致动以泄放内部压力或温度。
泄压机构可以为各种可能的泄压结构，本申请实施例对此并不限定。例如，泄压机构可以为温敏泄压机构，温敏泄压机构被配置为在设有泄压机构的电池单体20的内部温度达到阈值时能够熔化；和/或，泄压机构可以为压敏泄压机构，压敏泄压机构被配置为在设有泄压机构的电池单体20的内部气压达到阈值时能够破裂。
应理解，本申请实施例中的电池10包括的多个电池单体20在箱体11内可以沿任意方向排列和摆放。例如，以如图3所示的长方体形状的电池单体20为例，如图2所示，可以将多个电池单体20按照如图3所示的竖直方向安装在箱体内，以使得安装之后的多个电池单体20的端盖212面向上箱体111，而电池单体20的壳体211的底壁面向下箱体112。再例如，与图2不同，还可以将多个如图3所示的电池单体20横向设置于箱体内。
具体地，图4示出了本申请一个实施例的电池10的另一分解示意图，如图4所示，可以将多个电池单体20横向设置在箱体内。如图4所示，电池10可以包括多个电池单体20，该多个电池单体20可以排列为多层，例如，图4以设置两层电池单体20为例。对于电池10中最上一层电池单体20而言，该最上层中每个电池单体20的侧壁中面积最大的侧壁朝向下箱体112的开口处，也就是朝向上箱体111(图4中未示出)；相对的，对电池10中最下方一层电池单体20而言，该最下层中每个电池单体20的侧壁中面积最大的侧壁朝向下箱体112的底壁，也就是朝向下箱体112中与开口相对的壁。也就是说，如图3和图4所示，多个电池单体20的端盖212一端面向下箱体112的侧壁，也就是面向下箱体112中与开口相邻的壁，这样，相比于图2所示的电池单体20的安装方式，图4所示的安装方式更有利于电池单体20的散热。
为了进一步控制电池单体10能够处于合适的温度下工作，还可以在该电池10中设置冷却系统30，以保证电池10的温度。具体地，如图4所示，该冷却系统30可以设置在多个电池单体20的上方，以使得电池单体20的面积较大的侧壁朝向该冷却系统30，增加电池单体20的散热面积，更加有利于电池单体20散热。
可选地，可以在该冷却系统30的上方设置上箱体111，以使得上箱体111与下箱体112扣合，从而形成该电池10的箱体；或者，冷却部件30可以集成于上箱体111中，以减小占用的空间，即该冷却系统30可以作为上箱体111，以扣合下箱体112形成该电池10的箱体11。
由于电池10在高温高湿环境中，容易在箱体内产生冷凝液，尤其是冷却系统30表面和周围可能产生冷凝液，对于如图4所示的电池单体的安装方式，冷却系统30产生的冷凝液滴落时，很可能对电池10内的电连接区域造成安全隐患，影响电池10的安全性。具体而言，电池10内高温高湿的气体在遇到电池10的箱体11内的冷却系统 30时，会产生冷凝液，该冷凝液若滴到电池10内的电连接区域，则可能会影响电池10的安全性。
因此，本申请实施例提供了一种电池10，能够解决上述问题。
具体地，图5示出了本申请实施例的电池10的部分分解示意图，如图5所示，本申请实施例的电池10可以包括电池单体组201，对于任意一个电池单体组201而言，该电池单体组201可以包括多个电池单体20。例如，图5以一个电池单体组201为例，该电池单体组201可以包括4个电池单体20。
具体地，对于任意一个电池单体组201，可以通过多种方式排列多个电池单体20。例如，如图5所示，电池单体组201可以包括N个电池单体列，N为正整数，并且该N个电池单体列沿第一方向X排列，例如，图5中取N＝2；而N个电池单体列中的每个电池单体列的电池单体20可以沿第二方向Y排列，第一方向X垂直于第二方向Y。
如图5所示，该电池10还包括：冷却系统30，该冷却系统30设置于电池单体组201的第一面2111上。应理解，根据多个电池单体20在电池10的箱体11内设置的方向的不同，该第一面2111可以指该电池单体组201的任意一个表面。例如，以每个电池单体20为长方体为例，为了增加电池单体20的散热能力，可以如图5所示，将冷却系统30设置于面积最大的侧壁的上方，则电池单体组201朝向该冷却系统30的一面即为第一面2111，该第一面2111为该电池单体组201的面积最大的一个面，例如，如图5所示，该第一面2111垂直于第一方向X，这样可以增加电池单体组201的散热速度，达到较好的温度调节效果。
如图5所示，该电池10还可以包括信号传输组件24，设置于电池单体组201的第二面2112上，其中，该第二面2112与第一面2111相邻。具体地，信号传输组件24可以用于实现电池单体20的电压和/或温度信号的传输。例如，该信号传输组件24可以包括汇流部件241和绝缘层242，绝缘层242用于封装汇流部件241，绝缘层242具有开孔(未示出)，汇流部件241用于在开孔处与电池单体组201中的电池单体20电连接。
可选地，本申请实施例中的绝缘层242可以通过热压的方式封装该汇流部件241，并且，通过设置开孔的方式，使得汇流部件241能够经由开孔处实现电池单体组201中电池单体20之间的电连接。
在本申请实施例中，本申请实施例的信号传输组件24可以用于实现电池单体20之间的多种形式的电连接。例如，电池10内的电连接区域可以包括设置有汇流部件241的区域，另外，电池10内还可以设置用于感测电池单体20的状态的传感器件，而电池10内的电连接区域还可以包括设置有传感器件的区域。可选地，本申请实施例的信号传输组件24可以包括传感器件，而绝缘层242还可以用于封装该传感器件。
考虑到如图5所示的电池单体20与冷却系统30的排列方式，在电池10处于高温高湿环境中，容易在电池10的箱体内产生冷凝液，尤其是冷却系统30上产生的冷凝液，可能会滴落到电池10内的电连接区域，例如，可能会滴落到汇流部件241上，则可能导致电池10短路并失效，也就会影响电池10的安全性，因此，如图5所示，该电池10还可以包括：包覆件25，该包覆件25用于包覆信号传输组件24以阻挡冷却系统 30产生的冷凝液到达信号传输组件24。
因此，本申请实施例的电池10，在第一面2111上设置冷却系统30，在与第一面2111相邻的第二面2112设置信号传输组件24，以用于实现多个电池单体20之间的电连接，另外，该电池10还包括包覆件25，以用于包覆该信号传输组件24，这样，在冷却系统30产生冷凝液的情况下，该包覆件25可以阻挡该冷凝液到达信号传输组件24，以避免电池10发生短路，提高该电池10的安全性。
应理解，本申请实施例的包覆件25可以通过多种方式进行设置，下面将结合附图进行详细描述。
可选地，作为一个实施例，该包覆件25可以为能够包覆信号传输组件24所在的第二面2112的盖板。具体地，如图5所示，可以为电池10设置能够包覆第二面2112的盖板25，以作为包覆件25。可选地，该盖板25可以选择任意绝缘材料，例如，该盖板25可以选择与绝缘层242相同或者不同的绝缘材料，本申请实施例对此不做限定。
可选地，该盖板25可以通过多种方式与电池单体组201固定。例如，如图5所示，该盖板25可以包括第一连接区域251，以用于与第一面2111固定连接；进一步的，该盖板25还可以包括第二连接区域252，用于与电池单体组201的第三面2113固定连接，其中，第三面2113与第一面2111平行，且第三面2113与第二面2112相邻。第一连接区域251和/或第二连接区域252可以经由盖板25在第一方向X的两端弯折形成。具体地，在安装该盖板25时，可以通过该第一连接区域251和/或第二连接区域252将该盖板25固定在信号传输组件24所在的第二面2112，例如，可以通过双面胶等粘结剂将第一连接区域251和/或第二连接区域252分别固定在对应的第一面2111和/或第三面2113上，进而再通过粘结剂等，将该冷却系统30固定在第一面2111上，从而实现该盖板25与电池单体组201的固定以及冷却系统30和电池单体组201的固定，但本申请实施例并不限于此。
应理解，如图5所示，本申请实施例的盖板25上还可以设置有排液槽253，以用于引流冷凝液，例如，可以通过该排液槽253将冷凝液排至远离信号传输组件24的位置，例如，可以将冷凝液排至箱体11的底部，或者排出箱体11。
可选地，如图5所示，该盖板25上还可以设置有汇流槽254，汇流槽254与排液槽253连通，汇流槽254用于收集冷凝液并将冷凝液导入排液槽253。具体地，该汇流槽254相比于排液槽253可以更加靠近冷却系统30，以便于收集冷凝液；收集后的冷凝液通过排液槽253排至其他位置，以避免冷凝液影响信号传输组件24。
可选地，作为另一实施例，本申请实施例的包覆件25还可以为绝缘层242的一部分。具体地，图6示出了本申请实施例的电池10的部分组件的另一分解示意图，图7为图6中各部分组件安装后的示意图，图8为图7中区域A的局部放大图。如图6至图8所示，本申请实施例的包覆件25还可以由绝缘层242翻转而形成，这样，可以由绝缘层242直接形成包覆件25，简化结构，便于加工。
如图6至图8所示，绝缘层242向冷却系统30延伸至靠近该冷却系统30的位置，并在该位置处往回翻转，也就是在该位置处朝远离冷却系统30的方向翻转，以形成包覆件25，从而覆盖第二面2112。具体地，在加工信号传输组件24时，可以在绝缘 层242上预留出能够翻转并覆盖第二面2112的部分，进而通过热压等方式将绝缘层242与汇流部件241加工形成信号传输组件24时，绝缘层242一部分封装汇流部件214并固定在电池单体20的端盖212上，而绝缘层242的预留部分可以翻转以形成覆盖在第二面2112上的包覆件25，进而可以达到隔绝冷凝液的效果。该结构不需要额外增加部件，加工过程简单，更加便于安装。
可选地，该绝缘层242的翻转部分可以与电池单体组201的第三面2113固定连接，从而实现该翻转部分与电池单体组201的固定。例如，如图6所示，绝缘层242的翻转部分的边缘可以设置有折边区域2421，通过该折边区域2421与第三面2113固定连接，进而实现绝缘层242的翻转部分与电池单体组201之间的固定。例如，该折边区域2421可以与第三面2113之间通过粘结剂粘贴固定。
可选地，如图8所示，绝缘层242在翻转处可以与第二面2112形成朝向冷却系统30的夹角区2422，该夹角区2422被配置为收集用于粘接冷却系统30的粘接剂，这样，在采用粘结剂通过胶粘的方式将冷却系统30固定在第一面2111上时，该夹角区2422可以作为溢胶区，可以用于收集溢出的多余粘结剂，避免该粘结剂对电池10内其他部件的影响。
应理解，对于上述任意一种包覆件25而言，该包覆件25可以设置在冷却系统30的覆盖范围内。具体地，如图5至图8所示，沿第一方向X，冷却系统30的投影可以完全覆盖该包覆件25的投影，以使得该包覆件25也不影响冷却系统30的安装，并且，该冷却系统30产生的冷凝液可以被包覆件25更好的阻隔在外。
可选地，本申请实施例的冷却系统30靠近该包覆件25的端部可以朝向该包覆件25倾斜设置。具体地，如图5至图8所示，在该冷却系统30的靠近包覆件25的端部可以设置一段倾斜段31，该倾斜段31朝向包覆件25的方向倾斜，以使得在冷却系统30的表面产生的冷凝液可以经过该倾斜段31滑落，这样可以避免冷凝液在冷却系统30表面聚集无法排出，并且该倾斜段31朝向远离信号传输组件24的方向延伸，也可以避免冷凝液大量滴落在信号传输组件24附近，提高了信号传输组件24的安全性。
因此，本申请实施例的电池10，在第一面2111上设置冷却系统30，在与第一面2111相邻的第二面2112设置信号传输组件24，以用于实现多个电池单体20之间的电连接，另外，该电池10还包括包覆件25，以用于包覆该信号传输组件24，这样，在冷却系统30产生冷凝液的情况下，该包覆件25可以阻挡该冷凝液到达信号传输组件24，以避免电池10发生短路，提高该电池10的安全性。
本申请一个实施例还提供了一种用电设备，该用电设备可以包括前述各实施例中的电池10，以用于为该用电设备提供电能。可选地，用电设备可以为车辆1、船舶或航天器。
上文描述了本申请实施例的电池和用电设备，下面将描述本申请实施例的制备电池的方法和设备，其中未详细描述的部分可参见前述各实施例。
图9示出了本申请一个实施例的制备电池的方法300的示意性流程图。如图9所示，该方法300可以包括：310，提供电池单体组201，所述电池单体组201包括多个电池单体20；320，提供冷却系统30，所述冷却系统30设置于所述电池单体组201 的第一面2111上；330，提供信号传输组件24，所述信号传输组件24设置于所述电池单体组201的第二面2112上，所述第二面2112与所述第一面2111相邻，所述信号传输组件24包括汇流部件241和绝缘层242，所述绝缘层242用于封装所述汇流部件241，所述绝缘层242具有开孔，所述汇流部件241用于在所述开孔处与所述电池单体组201中的电池单体20电连接；340，提供包覆件25，所述包覆件25用于包覆所述信号传输组件24以阻挡所述冷却系统30产生的冷凝液到达所述信号传输组件24。
图10示出了本申请一个实施例的制备电池的设备400的示意性框图。如图10所示，制备电池的设备400可以包括：提供模块410。所述提供模块410用于：提供电池单体组201，所述电池单体组201包括多个电池单体20；提供冷却系统30，所述冷却系统30设置于所述电池单体组201的第一面2111上；提供信号传输组件24，所述信号传输组件24设置于所述电池单体组201的第二面2112上，所述第二面2112与所述第一面2111相邻，所述信号传输组件24包括汇流部件241和绝缘层242，所述绝缘层242用于封装所述汇流部件241，所述绝缘层242具有开孔，所述汇流部件241用于在所述开孔处与所述电池单体组201中的电池单体20电连接；提供包覆件25，所述包覆件25用于包覆所述信号传输组件24以阻挡所述冷却系统30产生的冷凝液到达所述信号传输组件24。
虽然已经参考优选实施例对本申请进行了描述，但在不脱离本申请的范围的情况下，可以对其进行各种改进并且可以用等效物替换其中的部件。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本申请并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (17)

  1. 一种电池，其特征在于，包括：
    电池单体组(201)，包括多个电池单体(20)；
    冷却系统(30)，设置于所述电池单体组(201)的第一面(2111)上；
    信号传输组件(24)，设置于所述电池单体组(201)的第二面(2112)上，所述第二面(2112)与所述第一面(2111)相邻，所述信号传输组件(24)包括汇流部件(241)和绝缘层(242)，所述绝缘层(242)用于封装所述汇流部件(241)，所述绝缘层(242)具有开孔，所述汇流部件(241)用于在所述开孔处与所述电池单体组(201)中的电池单体(20)电连接；
    包覆件(25)，用于包覆所述信号传输组件(24)以阻挡所述冷却系统(30)产生的冷凝液到达所述信号传输组件(24)。
  2. 根据权利要求1所述的电池，其特征在于，所述绝缘层(242)向所述冷却系统(30)延伸至靠近所述冷却系统(30)的位置，并在所述位置朝远离所述冷却系统(30)的方向翻转形成所述包覆件(25)。
  3. 根据权利要求2所述的电池，其特征在于，所述绝缘层(242)的翻转部分与所述电池单体组(201)的第三面(2113)固定连接，所述第三面(2113)与所述第一面(2111)平行。
  4. 根据权利要求3所述的电池，其特征在于，所述绝缘层(242)的翻转部分的边缘设置有折边区域(2421)，所述折边区域(2421)用于与所述第三面(2113)固定连接。
  5. 根据权利要求2至4中任一项所述的电池，其特征在于，所述绝缘层(242)在翻转处与所述第二面(2112)形成朝向所述冷却系统(30)的夹角区(2422)，所述夹角区(2422)被配置为收集用于粘接所述冷却系统(30)的粘接剂。
  6. 根据权利要求1所述的电池，其特征在于，所述包覆件(25)为包覆所述第二面(2112)的盖板。
  7. 根据权利要求6所述的电池，其特征在于，所述盖板包括第一连接区域(251)，用于与所述第一面(2111)固定连接。
  8. 根据权利要求7所述的电池，其特征在于，所述盖板还包括第二连接区域(252)，用于与所述电池单体组(201)的第三面(2113)固定连接，所述第三面(2113)与所述第一面(2111)平行。
  9. 根据权利要求6至8中任一项所述的电池，其特征在于，所述盖板上设置有排液槽(253)，用于引流所述冷凝液。
  10. 根据权利要求9所述的电池，其特征在于，所述盖板上还设置有汇流槽(254)，所述汇流槽(254)与所述排液槽(253)连通，所述汇流槽(254)用于收集所述冷凝液并将所述冷凝液导入所述排液槽(253)。
  11. 根据权利要求6至10中任一项所述的电池，其特征在于，所述盖板的材料为绝 缘材料。
  12. 根据权利要求1至11中任一项所述的电池，其特征在于，所述电池单体组(201)包括N个电池单体列，所述N个电池单体列沿第一方向排列，所述N个电池单体列中的每个电池单体列的电池单体(20)沿第二方向排列，所述第一方向垂直于所述第二方向，N为正整数；
    其中，所述第一面(2111)垂直于所述第一方向，所述第二面(2112)平行于所述第一方向和所述第二方向确定的平面。
  13. 根据权利要求1至12中任一项所述的电池，其特征在于，沿第一方向，所述冷却系统(30)的投影覆盖所述包覆件(25)的投影，所述第一面(2111)垂直于所述第一方向。
  14. 根据权利要求1至13中任一项所述的电池，其特征在于，所述冷却系统(30)靠近所述包覆件(25)的端部朝向所述包覆件(25)倾斜设置。
  15. 一种用电设备，其特征在于，包括：根据权利要求1至14中任一项所述的电池，所述电池用于提供电能。
  16. 一种制备电池的方法，其特征在于，包括：
    提供电池单体组(201)，所述电池单体组(201)包括多个电池单体(20)；
    提供冷却系统(30)，所述冷却系统(30)设置于所述电池单体组(201)的第一面(2111)上；
    提供信号传输组件(24)，所述信号传输组件(24)设置于所述电池单体组(201)的第二面(2112)上，所述第二面(2112)与所述第一面(2111)相邻，所述信号传输组件(24)包括汇流部件(241)和绝缘层(242)，所述绝缘层(242)用于封装所述汇流部件(241)，所述绝缘层(242)具有开孔，所述汇流部件(241)用于在所述开孔处与所述电池单体组(201)中的电池单体(20)电连接；
    提供包覆件(25)，所述包覆件(25)用于包覆所述信号传输组件(24)以阻挡所述冷却系统(30)产生的冷凝液到达所述信号传输组件(24)。
  17. 一种制备电池的设备，其特征在于，包括：提供模块，所述提供模块用于：
    提供电池单体组(201)，所述电池单体组(201)包括多个电池单体(20)；
    提供冷却系统(30)，所述冷却系统(30)设置于所述电池单体组(201)的第一面(2111)上；
    提供信号传输组件(24)，所述信号传输组件(24)设置于所述电池单体组(201)的第二面(2112)上，所述第二面(2112)与所述第一面(2111)相邻，所述信号传输组件(24)包括汇流部件(241)和绝缘层(242)，所述绝缘层(242)用于封装所述汇流部件(241)，所述绝缘层(242)具有开孔，所述汇流部件(241)用于在所述开孔处与所述电池单体组(201)中的电池单体(20)电连接；
    提供包覆件(25)，所述包覆件(25)用于包覆所述信号传输组件(24)以阻挡所述冷却系统(30)产生的冷凝液到达所述信号传输组件(24)。
PCT/CN2021/109606 2021-07-30 2021-07-30 电池、用电设备、制备电池的方法和设备 Ceased WO2023004750A1 (zh)

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