WO2023133756A1 - 电池、用电装置、制备电池的方法和装置 - Google Patents

电池、用电装置、制备电池的方法和装置 Download PDF

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Publication number
WO2023133756A1
WO2023133756A1 PCT/CN2022/071803 CN2022071803W WO2023133756A1 WO 2023133756 A1 WO2023133756 A1 WO 2023133756A1 CN 2022071803 W CN2022071803 W CN 2022071803W WO 2023133756 A1 WO2023133756 A1 WO 2023133756A1
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WO
WIPO (PCT)
Prior art keywords
battery
battery cell
thermal management
management components
battery cells
Prior art date
Application number
PCT/CN2022/071803
Other languages
English (en)
French (fr)
Inventor
王志
王鹏
李翔
秦峰
计泓冶
Original Assignee
宁德时代新能源科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to PCT/CN2022/071803 priority Critical patent/WO2023133756A1/zh
Priority to EP22912804.6A priority patent/EP4258420B8/en
Priority to CN202280024739.9A priority patent/CN117121268A/zh
Priority to US18/350,204 priority patent/US20230352769A1/en
Publication of WO2023133756A1 publication Critical patent/WO2023133756A1/zh

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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
    • H01M50/204—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
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • 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
    • H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the 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
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/643—Cylindrical 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
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • 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 the battery.
  • Energy saving and emission reduction is the key to the sustainable development of the automobile industry.
  • electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy saving and environmental protection.
  • battery technology is an important factor related to its development.
  • the present application provides a battery, an electrical device, a method and a device for preparing a battery cell, which can ensure the safety performance of the battery.
  • the present application provides a battery cell, including: a multi-layer battery cell group stacked along a first direction, and each layer of the battery cell group includes a plurality of battery cells arranged in an array; A plurality of thermal management components are arranged between two adjacent layers of the battery cell groups along the first direction, and the thermal management components are used for containing fluid to adjust the The temperature of the battery cells, the multiple thermal management components are connected to each other in a second direction to isolate two adjacent layers of the battery cell groups, the second direction is perpendicular to the first direction.
  • thermal management components are connected to form a whole to isolate the two-layer battery cell group in the first direction, which can make it difficult for the high-temperature and high-pressure substances discharged from the pressure relief mechanism to come into direct contact with a part of the battery cells after thermal runaway occurs.
  • the battery cells located in other layers can avoid the problem of further thermal runaway and ensure the safety performance of the battery.
  • multiple thermal management components are connected to form a whole, which can reduce the production difficulty of a single thermal management component and improve production efficiency.
  • the ends of the thermal management components in the second direction are provided with connecting parts, and the connecting parts are used to connect adjacent thermal management components.
  • thermal management components are connected by connecting parts, which can isolate adjacent two-layer battery cell groups.
  • the thermal management component layer formed by passing through multiple thermal management components prevents the thermal runaway of some battery cells from affecting the battery cells in other layers and causing further thermal runaway problems, ensuring the safety performance of the battery.
  • the thickness of the connection part is smaller than the thickness of other parts of the heat management component, so that there is a gap between the connection part and the battery cell, and the gap is used for Avoid the connection between the end cover of the battery cell and the side wall.
  • connection part and the battery cell can prevent the connection between the end cover and the side wall of the battery cell from destroying the insulation layer on the surface of the heat management component, resulting in insulation failure, and ensure the safety performance of the battery.
  • the two connected parts are fixed by welding.
  • welding at the joint can make the connection between multiple thermal management components stronger, making it more difficult for high-temperature and high-pressure substances to penetrate the thermal management component layer formed by multiple thermal management components, and avoid thermal runaway of some battery cells from affecting other layers
  • the problem of further thermal runaway is caused by the battery cells, which further ensures the safety performance of the battery.
  • one of the connected two connecting parts is provided with a first stepped structure, and the other is provided with a second stepped structure, and the first stepped structure is along with the second stepped structure.
  • the first directions are set opposite to each other and overlap each other to form a welding plane.
  • thermal management components are connected through a connecting part provided with a stepped structure, which can increase the path of high-temperature and high-pressure substances passing through the thermal management component layer formed by multiple thermal management components, effectively isolate adjacent two-layer battery cell groups, and avoid partial The thermal runaway of the battery cell affects the battery cells in other layers and causes further thermal runaway problems, ensuring the safety performance of the battery.
  • one of the connected two connecting parts is provided with a protrusion along the second direction, and the other is provided with a groove along the second direction, and the protrusion and the The grooves are arranged correspondingly, and the protrusions are accommodated in the grooves to realize the connection of the two connecting parts.
  • a plurality of thermal management components are connected through the connection part provided with protrusions and grooves, which can make the connection between the two connection parts stronger and increase the path of high-temperature and high-pressure substances passing through the thermal management component layer formed by multiple thermal management components , can effectively isolate the adjacent two-layer battery cell groups, avoid the thermal runaway of some battery cells affecting the battery cells of other layers and cause further thermal runaway problems, and ensure the safety performance of the battery.
  • the connecting portion is provided with reinforcing ribs protruding toward the battery cells.
  • a reinforcing rib is provided near the end surface of the connecting part, which can enhance the strength of the connecting part, so that the connected connecting parts are not easily damaged by external force.
  • the groove structure formed by the connection of the two connecting parts provided with reinforcing ribs can be used to place solder in some welding methods, such as brazing, so as to facilitate welding.
  • the reinforcing rib is accommodated in the space formed by the end cap of the battery cell and the electrode terminal.
  • the ribs are accommodated in the space formed by the end caps of the battery cells and the electrode terminals, and no additional space is required to accommodate the ribs. At the same time, the possibility of the ribs interfering with the battery cells is reduced as much as possible, which can avoid damage to the battery cells. The battery cell is damaged, so that the safety performance of the battery can be guaranteed.
  • the surface shape of the thermal management component matches the surface shape of the battery cell.
  • the contact area between the surface of the thermal management component and the surface of the battery cell is larger, which is more conducive to adjusting the temperature of the battery cell, so that the battery cell can maintain a suitable temperature during use, and it is guaranteed to include multiple battery cells.
  • the safety performance of the battery during use At the same time, it can also save the space inside the battery, which is conducive to improving the energy density of the battery.
  • a plurality of the battery cells of the battery cell group are bonded to the thermal management component in the first direction.
  • multiple battery cells can be fixed by the thermal management component to improve the performance of the battery cells and the battery cell group formed by multiple battery cells. Strength of. At the same time, it is possible to make the battery cell and the thermal management component more tightly bonded, improve the temperature regulation effect of the thermal management component on the battery cell, enable the battery to maintain a suitable temperature during use, and improve the safety performance of the battery.
  • the surface of the connection part has an insulating layer.
  • connection part has an insulating layer, which can improve the insulation effect of the heat management component, avoid potential safety hazards caused by insulation failure, and further improve the safety performance of the battery.
  • the present application provides an electric device, which includes the battery in the above embodiment, and the battery is used to provide electric energy for the electric device.
  • the present application provides a method for preparing a battery, including: providing a multi-layer battery cell group stacked along a first direction, and each layer of the battery cell group includes a plurality of battery cells arranged in an array body; provide a plurality of thermal management components, arranged between two adjacent layers of the battery cell groups along the first direction, the thermal management components are used to accommodate fluid to adjust the heat management components located on both sides of the thermal management components The temperature of the battery cells, a plurality of the thermal management components are connected to each other in a second direction to isolate two adjacent layers of the battery cell groups, the second direction is perpendicular to the first direction .
  • the present application provides a device for preparing a battery, including:
  • a first providing module configured to provide a multi-layer battery cell group stacked along a first direction, each layer of the battery cell group includes a plurality of battery cells arranged in an array;
  • the second providing module is used to provide a plurality of thermal management components, which are arranged between two adjacent layers of the battery cell groups along the first direction, and the thermal management components are used to accommodate fluid to adjust the The temperature of the battery cells on both sides of the thermal management component, a plurality of the thermal management components are connected to each other in a second direction to isolate two adjacent layers of the battery cell groups, and the second direction is perpendicular to the first direction.
  • Fig. 1 is a schematic structural diagram of a vehicle provided by some embodiments of the present application.
  • Fig. 2 is a schematic diagram of an exploded structure of a battery provided by some embodiments of the present application.
  • Fig. 3 is a schematic diagram of an exploded structure of a battery provided in some embodiments of the present application.
  • Fig. 4 is the enlarged schematic diagram of part M in Fig. 3;
  • Fig. 5 is a structural schematic diagram of a thermal management component
  • Fig. 6 is a structural schematic diagram of interconnection of multiple thermal management components
  • Fig. 7 is a schematic diagram of a connection part provided by an embodiment of the present application.
  • Fig. 8 is a schematic diagram of another connection part provided by the embodiment of the present application.
  • Fig. 9 is a schematic diagram of another connection part provided by the embodiment of the present application.
  • Fig. 10 is a schematic diagram of another connection part provided by the embodiment of the present application.
  • Fig. 11 is a partial cross-sectional view of the battery provided by the embodiment of the present application.
  • Fig. 12 is an enlarged schematic view of a section of part C in Fig. 11;
  • Fig. 13 is a schematic flowchart of a method for preparing a battery provided by some embodiments of the present application.
  • Fig. 14 is a schematic block diagram of a device for preparing a battery provided by some embodiments of the present application.
  • the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of the various components in the embodiments of the application shown in the drawings, as well as the overall thickness, length and width of the integrated device, are for illustrative purposes only, and should not constitute any limitation to the 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.
  • the battery cells are generally divided into three types according to the way of packaging: cylindrical battery cells, square battery cells and pouch battery cells, which is not limited in the 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.
  • the battery mentioned in this application may include a battery module or a battery pack, 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 is composed of a positive pole piece, a negative pole piece and a separator.
  • a battery cell works primarily by moving metal ions between the positive and negative pole pieces.
  • 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, and the positive electrode collector without the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer. Fluid, the positive electrode current collector not coated with the positive electrode active material layer is used as the positive electrode tab.
  • the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobaltate, lithium iron phosphate, ternary lithium or lithium manganate.
  • 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, and the negative electrode collector without the negative electrode active material layer protrudes from the negative electrode collector coated with the negative electrode active material layer. Fluid, the negative electrode current collector not coated with the negative electrode active material layer is used 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. In order to ensure that a large current is passed without fusing, 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
  • 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 pressure relief mechanism is generally installed on the battery cell.
  • the pressure relief mechanism refers to an element or component that is activated to release the internal pressure when the internal pressure or temperature of the battery cell reaches a predetermined threshold.
  • the predetermined threshold can be adjusted according to different design requirements.
  • the predetermined threshold may depend on the materials of one or more of the positive electrode sheet, the negative electrode sheet, the electrolyte and the separator in the battery cell.
  • the pressure relief mechanism may be a pressure-sensitive or temperature-sensitive element or component, that is, when the internal pressure or temperature of the battery cell reaches a predetermined threshold, the pressure relief mechanism is activated to form a channel for internal pressure relief.
  • the "actuation" mentioned in this application refers to the action of the pressure relief mechanism, so that the internal pressure and temperature of the battery cells can be released. Actions by the pressure relief mechanism may include, but are not limited to, at least a portion of the pressure relief mechanism rupture, be torn, or melt, among others. After the pressure relief mechanism is actuated, the high temperature and high pressure material inside the battery cell will be discharged from the pressure relief mechanism as discharge. In this way, the battery cells can be depressurized under controllable pressure or temperature, thereby avoiding potential more serious accidents.
  • the emissions from battery cells mentioned in this application include but are not limited to: electrolyte, dissolved or split positive and negative electrodes, fragments of separator, high temperature and high pressure gas generated by reaction, flame, etc.
  • the pressure relief mechanism on the battery cell has an important impact on the safety of the battery. For example, when a battery cell is short-circuited or overcharged, it may cause thermal runaway inside the battery cell, resulting in a sudden increase in pressure or temperature. In this case, the internal pressure and temperature can be released to the outside through the actuation of the pressure relief mechanism, so as to prevent the battery cells from exploding and igniting.
  • a plurality of battery cells are usually arranged in a battery, and the plurality of battery cells may be arranged in a multilayer structure inside the battery.
  • the pressure relief mechanism of some of the battery cells When the pressure relief mechanism of some of the battery cells is actuated, the high-temperature and high-pressure substances inside the battery cells will spray outwards, especially the gas generated when thermal runaway occurs inside the battery cells, which can easily rush out and affect other layers of battery cells.
  • the high-temperature and high-pressure substances inside the battery cell such as high-temperature and high-pressure gas, are likely to directly impact the relatively upper layer in the multi-layer structure
  • the battery cell causes the temperature of the upper battery cell to rise, causing further problems of thermal runaway.
  • the present application provides a battery, including a plurality of thermal management components, which are arranged between two adjacent layers of battery cells in a multi-layer battery cell group and connected to each other to isolate the two adjacent layers.
  • the battery cell group After the pressure relief mechanism of the battery cell is actuated, even if the high-temperature and high-pressure material inside the battery cell is sprayed outward, it will be blocked by the interconnected battery cells to avoid the high-temperature and high-pressure material discharged from the pressure relief mechanism of the battery cell Impacting the battery cells in other layers will cause further thermal runaway, thus ensuring the safety performance of the battery.
  • Electrical devices can be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys and power tools, etc.
  • Vehicles can be fuel vehicles, gas vehicles or new energy vehicles, and new energy vehicles can be pure electric vehicles, hybrid vehicles or extended-range vehicles;
  • spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.;
  • electric toys include fixed Type or mobile electric toys, such as game consoles, electric car toys, electric boat toys and electric airplane toys, etc.;
  • electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, for example, Electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, electric planers, and more.
  • the embodiment of the present application does not impose special limitations on the above electric equipment.
  • 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 30 and a battery 10 can be arranged inside the vehicle 1 , and the controller 30 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 or natural gas to provide driving power for the vehicle 1 .
  • 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. Batteries can also be called battery packs.
  • 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.
  • FIG. 2 shows 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 20 are accommodated in the box body 11 .
  • Figure 2 shows a possible implementation of the box body 11 of the embodiment of the present application, as shown in Figure 2, the box body 11 may include two parts, referred to here as the first box body part 111 and the second box body Part 112, the first case part 111 and the second case part 112 are snapped together.
  • the shapes of the first case part 111 and the second case part 112 may be determined according to the combined shape of the battery modules 200 , and at least one of the first case part 111 and the second case part 112 has an opening.
  • the first box body part 111 and the second box body part 112 can be hollow cuboids and only one face is an opening face respectively, the opening of the first box body part 111 and the second box body part
  • the openings of 112 are oppositely arranged, and the first box body part 111 and the second box body part 112 are interlocked to form the box body 11 with a closed chamber.
  • first box part 111 and the second box part 112 may be a hollow cuboid with an opening, while the other may be a plate to cover the opening.
  • the second box body part 112 is a hollow cuboid and only one face is an open surface
  • the first box body part 111 is a plate-shaped example, so the first box body part 111 covers the second box body part 112.
  • the opening is formed to form a box body 11 with a closed cavity, which 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 box part 111 and the second box 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 body 11 through the conductive mechanism.
  • the number of battery cells 20 in the battery module 200 can be set to any value. Multiple 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, in order to facilitate installation, the battery cells 20 are arranged in groups, and each group of battery cells 20 constitutes a battery module 200 . The number of battery cells 20 included in the battery module 200 is not limited, and can be set according to requirements.
  • the battery 10 may include a plurality of battery modules 200, and these battery modules 200 may be connected in series, in parallel or in parallel.
  • FIG. 3 is a schematic diagram of an exploded structure of a battery 10 provided by some embodiments of the present application, in which the battery 10 shown includes a multi-layer battery cell group 201 stacked along the first direction H and a plurality of heat management components 21, the figure 4 is an enlarged schematic view of part M in FIG. 3 .
  • each layer of battery cell groups 201 includes a plurality of battery cells 20 arranged in an array, and a plurality of heat management components 21 are disposed between two adjacent layers of battery cell groups 201 along the first direction H. between.
  • the thermal management component 21 is used to contain fluid to adjust the temperature of the battery cells 20 located on both sides of the thermal management component 21, and multiple thermal management components 21 are connected to each other in the second direction L to isolate two adjacent layers of battery cells Group 201, the second direction L is perpendicular to the first direction H.
  • the array arrangement refers to arranging a plurality of battery cells 20 along the second direction L and the third direction R, and arranging them on a plane parallel to the second direction L and the third direction R. It is a layer of battery cell groups 201, and the second direction L and the third direction R are perpendicular to each other.
  • the second direction L is parallel to the axial direction of the battery cells 20 .
  • the stacking arrangement refers to arranging the multilayer battery cell groups 201 along the first direction H, wherein the first direction H is perpendicular to the plane formed by the second direction L and the third direction R. It should be understood that the first direction H, the second direction L and the third direction R pointed to by the arrows in FIG. Direction parallel to the straight line where the arrow is located in the figure.
  • a thermal management component 21 can be arranged between two adjacent layers of battery cell groups 201 in the multilayer battery cell group 201.
  • the thermal management component 21 has a cavity structure and can accommodate fluids to regulate multiple batteries.
  • Monomer 20 temperature may be liquid or gas, and adjusting the temperature refers to heating or cooling the plurality of battery cells 20 .
  • the thermal management component 21 is used to contain cooling fluid to lower the temperature of the multiple battery cells 20.
  • the thermal management component 21 can also be called a cooling component or a cooling system.
  • a cooling plate, etc., and the fluid contained therein may also be called a cooling medium or a cooling fluid, and more specifically, may be called a cooling liquid or a cooling gas.
  • the heat management component 21 can also be used for heating to raise the temperature of the plurality of battery cells 20 , which is not limited in this embodiment of the present application.
  • the fluid may circulate in order to achieve a better effect of temperature regulation.
  • the fluid may be water, a mixture of water and glycol, or air.
  • the thermal management components 21 located on the same plane are referred to as a one-layer thermal management component group, and a one-layer thermal management component group may include multiple thermal management components 21 . It can be seen from FIG. 3 and FIG. 4 that a plurality of thermal management components 21 are connected to each other in the second direction L to form a layer of thermal management component groups without gaps, so as to isolate two adjacent layers of battery cells.
  • FIG. 3 and FIG. 4 only show the stacked arrangement of two layers of battery cell groups 201 , and a layer of heat management components is arranged between the two layers of battery cell groups 201 . It should be understood that the battery 10 may also have more layers of battery cell groups 201 stacked, and a layer of heat management components connected to each other in the second direction L may be provided between every two adjacent layers of battery cell groups 201 twenty one.
  • a plurality of thermal management components 21 are connected to form a whole to isolate the two-layer battery cell group 201 in the first direction H, so that a part of the battery cells 20 can discharge high-temperature and high-pressure substances from the pressure relief mechanism after thermal runaway occurs. It is not easy to directly contact the battery cells 20 located on other layers, thereby avoiding the problem of further thermal runaway and ensuring the safety performance of the battery 10 .
  • a plurality of thermal management components 21 are connected to form a whole, which can reduce the production difficulty of a single thermal management component 21 and improve production efficiency.
  • an end portion of the thermal management component 21 in the second direction L is provided with a connecting portion 211 , and the connecting portion 211 is used for connecting adjacent thermal management components 21 .
  • the end portion of the thermal management component 21 in the second direction L refers to a portion of the thermal management component 21 perpendicular to the second direction L, for example, may be two end faces perpendicular to the second direction L.
  • the connection portion 211 refers to a portion extending in the second direction L from an end portion of the heat management member 21 .
  • the connecting portion 211 may be disposed at both ends of the heat management component 21 in the second direction L, or may be disposed at only one end.
  • the thermal management component 21 at the edge position of the thermal management component group of one layer may only have a connection portion 211 provided at one end for connecting with another thermal management component 21, and the end portion without the connection portion 211 may be provided. It can be used as the edge of the thermal management component group of this layer, not connected to any thermal management component 21 .
  • FIG. 5 shows one thermal management component 21 among multiple thermal management components 21
  • FIG. 6 shows a layer of thermal management component group formed by connecting multiple thermal management components 21 .
  • Arranging a plurality of thermal management components 21 in FIG. 5 along the second direction L and connecting them to each other through the connecting portion 211 can form a one-layer thermal management component group shown in FIG. 6 .
  • the quantity and arrangement of the thermal management components 21 shown in FIG. 6 are only examples and not limited.
  • the one-layer thermal management component group shown in FIG. 6 may also be provided with a current collecting component 212 for centralized control of the fluid in the thermal management component 21 .
  • each layer of thermal management component groups can be provided with a current collecting component 212, or only one current collecting component 212 can be provided in the multi-layer thermal management component group. Do limited.
  • FIG. 7 is a schematic diagram of a connecting portion 211 provided by an embodiment of the present application, showing a possible schematic cross-sectional view of part K in FIG. 6 on a plane formed parallel to the first direction H and the second direction L. It can be seen from FIG. 7 that since the connecting portion 211 is disposed at the end of the thermal management component 21 in the second direction L, the connecting portions 211 on the ends of the two thermal management components 21 are against each other in the second direction L. connected to form a one-layer thermal management assembly with no gaps.
  • a plurality of thermal management components 21 are connected through the connection part 211, which can isolate the adjacent two-layer battery cell group 201, and when the temperature or pressure inside some battery cells 20 reaches a threshold value, it will be discharged from the pressure relief mechanism of the battery cells 20 It is difficult for the high-temperature and high-pressure material to pass through the thermal management component 21 layer formed by multiple thermal management components 21, so as to avoid the problem of further thermal runaway caused by the thermal runaway of some battery cells 20 affecting the battery cells 20 of other layers, and ensure the safety of the battery 10. safety performance.
  • one of the two connected connecting parts 211 is provided with a first stepped structure 211A, and the other is provided with a second stepped structure 211B, and the first stepped structure 211A and the second stepped structure
  • the two stepped structures 211B are disposed opposite to each other along the first direction H, and overlap each other to form a welding plane.
  • Fig. 8 is a schematic diagram of another connection part 211 provided by the embodiment of the present application, showing another possible schematic cross-sectional view of part K in Fig. 6 on a plane formed parallel to the first direction H and the second direction L .
  • the two connecting parts 211 shown in Fig. 8 are lapped by step structures arranged oppositely, for example, one of the two connected parts 211 is provided with a first step structure 211A, and the other is provided with second step structure
  • the first stepped structure 211A and the second stepped structure 211B are arranged opposite to each other along the first direction H, so that the two stepped structures can form a plane after being overlapped with each other.
  • This plane can be a welding plane, which is convenient for welding equipment when welding is required. Weld the gap formed by overlapping the two stepped structures.
  • a plurality of thermal management components 21 are connected through a connecting portion 211 provided with a stepped structure, which can increase the path for high-temperature and high-pressure substances to pass through the thermal management component 21 layer formed by multiple thermal management components 21, and effectively isolate two adjacent layers of battery cells.
  • the group 201 prevents the thermal runaway of some battery cells 20 from affecting the battery cells 20 in other layers and causing further thermal runaway, ensuring the safety performance of the battery 10 .
  • one of the two connected connecting parts 211 is provided with a protrusion along the second direction L, and the other is provided with a groove along the second direction L, and the protrusion and The grooves are arranged correspondingly, and the protrusions are accommodated in the grooves to realize the connection of the two connecting parts 211 .
  • Fig. 9 is a schematic diagram of another connection part 211 provided by the embodiment of the present application, showing another possible schematic cross-sectional view of part K in Fig. 6 on a plane formed parallel to the first direction H and the second direction L .
  • one of the two connected connecting parts 211 is provided with a protrusion along the second direction L.
  • a part of the end surface of L extends along the second direction L and is formed.
  • the thickness of the protrusion is smaller than the thickness of the connecting portion 211.
  • the protrusion can be located in the first direction H and located at the connecting portion.
  • the end of the connection part 211 refers to the part of the connection part 211 perpendicular to the second direction L, for example, may be an end surface perpendicular to the second direction L.
  • the other connecting part 211 connected with it is provided with a groove corresponding to the protrusion, so that the protrusion can be accommodated in the groove, that is, the protrusion is inserted into the groove, so as to realize the connection of the two connecting parts 211 .
  • a plurality of heat management components 21 are connected through the connection part 211 provided with protrusions and grooves, which can make the connection between the two connection parts 211 more firm, and increase the heat management formed by the high temperature and high pressure material passing through the plurality of heat management components 21
  • the path of the 21st layer of the component can effectively isolate the adjacent two-layer battery cell groups 201, avoiding the thermal runaway of some battery cells 20 from affecting the battery cells 20 of other layers and causing further thermal runaway problems, and ensuring the safety of the battery 10 performance.
  • the connecting portion 211 is provided with a reinforcing rib 211C protruding toward the battery cell 20 .
  • FIG. 10 is a schematic diagram of another connection part 211 provided by the embodiment of the present application, showing another possible schematic cross-sectional view of part K in Fig. 6 on a plane formed parallel to the first direction H and the second direction L .
  • FIG. 10 shows that the connecting portion 211 is provided with a reinforcing rib 211C protruding toward the battery cell 20 , and the reinforcing rib 211C may be provided on the connecting portion 211 of any structure provided by the embodiments of the present application.
  • the ribs 211C may protrude toward the battery cells 20 in any layer of the two-layer battery cell group 201 isolated by the plurality of thermal management components 21, and may also protrude toward the battery cells in the two-layer battery cell group 201 at the same time. Body 20 protrudes.
  • the reinforcing rib 211C may be provided at a position at a certain distance from the end surface of the connecting portion 211 along the second direction L. As shown in FIG. Taking the structure shown in FIG. 10 as an example, the ribs 211C protrude toward the battery cells 20 in the two-layer battery cell group 201 at the same time, and the two connecting parts 211 can form an H-shaped structure when they abut against each other.
  • a reinforcing rib 211C is provided near the end surface of the connecting portion 211 to enhance the strength of the connecting portion 211 so that the connected connecting portions 211 are not easily damaged by external force.
  • the groove structure formed by the connection of the two connecting parts 211 provided with the reinforcing rib 211C can be used to place solder in some welding methods, such as brazing, so as to facilitate welding.
  • the two connected connecting parts 211 are fixed by welding.
  • connection portion 211 shown in the above-mentioned FIGS. 7 to 10 all can be fixed by welding.
  • the gap formed on the surface perpendicular to the first direction H of the two connecting parts 211 can be welded, so that multiple The connection between the thermal management components 21 is tighter.
  • welding at the connection can make the connection between multiple thermal management components 21 more firm, making it more difficult for high-temperature and high-pressure substances to penetrate the thermal management component 21 layer formed by multiple thermal management components 21, and avoid heat dissipation of some battery cells 20.
  • the runaway will affect the battery cells 20 in other layers to cause further thermal runaway, further ensuring the safety performance of the battery 10 .
  • the thickness of the connection part 211 is smaller than the thickness of other parts of the thermal management component 21, so that there is a gap between the connection part 211 and the battery cell 20, and the gap is used for Avoid the connection between the end cover of the battery cell 20 and the side wall.
  • Figure 11 is a partial cross-sectional view of the battery 10 provided by the embodiment of the present application, the cross-section is parallel to the plane formed by the first direction H and the second direction L, and passes through a battery cell 20 axis
  • Fig. 12 is a schematic view of the cross-section of part C in Fig. 11 on this cross-section. It can be seen from FIG. 11 and FIG. 12 that the thickness of the connection portion 211 of the thermal management component 21 is smaller than the thickness of other parts of the thermal management component 21, that is, the connection portion 211 is formed by the end surface of the thermal management component 21 perpendicular to the second direction L. A part is formed by extending along the second direction L.
  • the non-contact portion may be, for example, the connection between the end cover and the side wall of the battery cell 20 .
  • the end cap and the side wall of the battery cell 20 are often connected by welding, which is likely to form an uneven area at the weld, and the connection between the end cap and the side wall of the battery cell 20 directly contacts the heat management component 21, which is likely to damage the thermal
  • the insulation layer coated on the surface of the management component 21 causes problems such as insulation failure and weld seam damage. Therefore, there is a gap between the connecting portion 211 and the battery cell 20 , which can avoid the connection between the end cover and the side wall of the battery cell 20 , and avoid the above problems.
  • the gap between the connecting portion 211 and the battery cell 20 can prevent the connection between the end cover and the side wall of the battery cell 20 from destroying the insulation layer on the surface of the heat management component 21 , which will cause insulation failure, and ensure the safety of the battery 10 performance.
  • the surface of the connection part 211 has an insulating layer.
  • the surface of the thermal management component 21 is often coated with an insulating material to insulate the thermal management component 21 from the battery cells 20 . Even if the connecting portion 211 of the heat management component 21 is not in contact with the battery cell 20 , an insulating material can be applied to the surface of the connecting portion 211 to form an insulating layer on the surface of the connecting portion 211 to further improve the insulating effect.
  • the surface of the connecting portion 211 has an insulating layer, which can improve the insulating effect of the heat management component 21 , avoid potential safety hazards caused by insulation failure, and further improve the safety performance of the battery 10 .
  • the reinforcing rib 211C is accommodated in the space formed by the end cap of the battery cell 20 and the electrode terminal.
  • the connecting portion 211 is provided with a reinforcing rib 211C protruding toward the battery cell 20 , the reinforcing rib 211C needs to occupy a certain space in the direction toward the battery cell 20 , which may interfere with the battery cell 20 . Therefore, the reinforcing rib 211C may be disposed in the space formed by the end cap and the electrode terminal of the battery cell 20 .
  • the reinforcing rib 211C is accommodated in the space formed by the end cap of the battery cell 20 and the electrode terminals, and there is no need to additionally design a space for accommodating the reinforcing rib 211C, and at the same time, the possibility of the reinforcing rib 211C interfering with the battery cell 20 is reduced as much as possible.
  • the safety performance of the battery 10 can be guaranteed by avoiding damage to the battery cells 20 .
  • the surface shape of the thermal management component 21 matches the surface shape of the battery cell 20 .
  • the surface of the thermal management component 21 may also have a shape that matches the surface shape of the battery cell 20.
  • the surface of the thermal management component 21 may have a matching arc surface.
  • 11 and 12 show the thermal management components 21 when two layers of battery cells 20 are arranged in the battery 10 along the third direction R, wherein the two layers of battery cells 20 are arranged alternately to save space, and the thermal management components
  • the section of 21 in its thickness direction has a wavy shape while matching the surface shape of the battery cells 20 on both surfaces of the heat management member 21 .
  • the contact area between the surface of the thermal management component 21 and the surface of the battery cell 20 is larger, which is more conducive to adjusting the temperature of the battery cell 20, so that the battery cell 20 can maintain a suitable temperature during use, and ensure that the battery cell 20 includes multiple The safety performance of the battery 10 with a single battery cell 20 during use.
  • the space inside the battery 10 can also be saved, which is beneficial to improving the energy density of the battery 10 .
  • the plurality of battery cells 20 of the battery cell group 201 are bonded to the heat management component 21 in the first direction H.
  • the battery cells 20 in the multi-layer battery cell group 201 stacked along the first direction H may be bonded to the heat management component 21 .
  • an adhesive can be coated on the side of the thermal management component 21 facing the battery cells 20, so that when the thermal management component 21 is arranged between two adjacent layers of battery cell groups 201 along the first direction H, it can The plurality of battery cells 20 in the battery cell group 201 are bonded with an adhesive.
  • the plurality of battery cells 20 can be fixed by the thermal management component 21, so as to improve the performance of the battery cells 20 and the plurality of battery cells. 20 to form the strength of the battery cell group 201.
  • the present application also provides an electric device, including the battery 10 described in any of the above schemes, and the battery 10 is used to provide electric energy for the electric device.
  • the battery cell 20, the battery 10, and the electrical device provided by the embodiment of the present application are described above.
  • the method and device for preparing the battery cell 20 provided by the embodiment of the present application will be described below in conjunction with FIG. 13 and FIG. 14, which are not detailed Part of the description can refer to the previous embodiments.
  • FIG. 13 is a schematic flowchart of a method for preparing a battery 10 provided by some embodiments of the present application. As shown in Figure 13, the method 1300 may include:
  • each layer of battery cell group 201 includes a plurality of battery cells 20 arranged in an array;
  • thermal management components 21 which are arranged between adjacent two-layer battery cell groups 201 along the first direction H, and the thermal management components 21 are used to accommodate fluid to adjust the battery cells located on both sides of the thermal management component 21
  • the temperature of the body 20, the plurality of thermal management components 21 are connected to each other in the second direction L to isolate the adjacent two-layer battery cell groups 201, and the second direction L is perpendicular to the first direction H.
  • FIG. 14 is a schematic block diagram of a device for preparing a battery 10 provided by some embodiments of the present application. As shown in Figure 14, the device 1400 may include:
  • the first providing module 1401 is configured to provide multi-layer battery cell groups 201 stacked along the first direction H, and each layer of battery cell groups 201 includes a plurality of battery cells 20 arranged in an array;
  • the second providing module 1402 is used to provide a plurality of heat management components 21, which are arranged between two adjacent layers of battery cell groups 201 along the first direction H.
  • the temperature of the battery cells 20 on both sides of 21, multiple thermal management components 21 are connected to each other in the second direction L to isolate the adjacent two-layer battery cell groups 201, and the second direction L is perpendicular to the first direction H.

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Abstract

本申请实施例提供一种电池、用电装置、制备电池的方法和装置，该电池包括：沿第一方向层叠设置的多层电池单体组，每层所述电池单体组包括多个呈阵列排布的电池单体；多个热管理部件，沿所述第一方向设置于相邻的两层所述电池单体组之间，所述热管理部件用于容纳流体以调节位于所述热管理部件两侧的所述电池单体的温度，多个所述热管理部件在第二方向上相互连接，以隔离相邻的两层所述电池单体组，所述第二方向垂直于所述第一方向。本申请的电池、用电装置、制备电池的方法和装置，能够保证电池的安全性能。

Description

电池、用电装置、制备电池的方法和装置 技术领域
本申请涉及电池技术领域，特别是涉及一种电池、用电装置、制备电池的方法和装置。
背景技术
节能减排是汽车产业可持续发展的关键。在这种情况下，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。而对于电动车辆而言，电池技术又是关乎其发展的一项重要因素。
随着电池技术的发展，电池的各种性能都在不断提高，其中，电池的安全性能尤为重要。如果电池的安全性能不能保证，那该电池就无法使用。因此，如何保证电池的安全性能，是电池技术中一个亟待解决的技术问题。
发明内容
鉴于上述问题，本申请提供一种电池、用电装置、制备电池单体的方法和装置，能够保证电池的安全性能。
第一方面，本申请提供了一种电池单体，包括：沿第一方向层叠设置的多层电池单体组，每层所述电池单体组包括多个呈阵列排布的电池单体；多个热管理部件，沿所述第一方向设置于相邻的两层所述电池单体组之间，所述热管理部件用于容纳流体以调节位于所述热管理部件两侧的所述电池单体的温度，多个所述热管理部件在第二方向上相互连接，以隔离相邻的两层所述电池单体组，所述第二方向垂直于所述第一方向。
多个热管理部件连接起来形成一个整体以隔离第一方向上的两层电池单体组，可以使得一部分电池单体在发生热失控后，从泄压机构中排出的高温高压物质不易直接接触到位于其他层的电池单体，从而避免引发进一步地热失控的问题，保证电池的安全性能。同时，由多个热管理部件连接起来形成一个整体，可以降低单个热管理部件的生产难度，提高生产效率。
在一些实施例中，所述热管理部件在所述第二方向上的端部设置有连接部，所述连接部用于连接相邻的所述热管理部件。
多个热管理部件通过连接部连接，能够隔离相邻的两层电池单体组，在部分电池单体内部的温度或压力达到阈值时，从电池单体的泄压机构排出的高温高压物 质难以穿过多个热管理部件形成的热管理部件层，避免部分电池单体的热失控影响其他层的电池单体而引发进一步地热失控的问题，保证电池的安全性能。
在一些实施例中，沿所述第一方向，所述连接部的厚度小于所述热管理部件其他部分的厚度，使得所述连接部与所述电池单体之间具有间隙，所述间隙用于避让所述电池单体的端盖与侧壁的连接处。
连接部与电池单体之间具有间隙能够避免电池单体的端盖与侧壁的连接处破坏热管理部件表面的绝缘层，而造成的绝缘失效的问题，保证电池的安全性能。
在一些实施例中，相连接的两个所述连接部通过焊接固定。
在连接处进行焊接能够使得多个热管理部件之间的连接更加牢固，使得高温高压物质更加难以穿透多个热管理部件形成的热管理部件层，避免部分电池单体的热失控影响其他层的电池单体而引发进一步地热失控的问题，进一步保证电池的安全性能。
在一些实施例中，相连接的两个所述连接部中的一者设置有第一台阶结构，另一者设置有第二台阶结构，所述第一台阶结构与所述第二台阶结构沿所述第一方向相对设置，且相互搭接形成焊接平面。
多个热管理部件通过设置有台阶结构的连接部连接，能够增加高温高压物质穿过多个热管理部件形成的热管理部件层的路径，有效隔离相邻的两层电池单体组，避免部分电池单体的热失控影响其他层的电池单体而引发进一步地热失控的问题，保证电池的安全性能。
在一些实施例中，相连接的两个所述连接部中的一者沿所述第二方向设置有凸起，另一者沿所述第二方向设置有凹槽，所述凸起与所述凹槽对应设置，且所述凸起容纳于所述凹槽中以实现两个所述连接部的连接。
多个热管理部件通过设置有凸起和凹槽的连接部连接，能够使得两个连接部之间的连接更加牢固，增加高温高压物质穿过多个热管理部件形成的热管理部件层的路径，能够有效隔离相邻的两层电池单体组，避免部分电池单体的热失控影响其他层的电池单体而引发进一步地热失控的问题，保证电池的安全性能。
在一些实施例中，所述连接部上设置有朝向所述电池单体凸出的加强筋。
在连接部的端面附近设置加强筋，可以增强连接部的强度，使得相互连接的连接部不易被外力破坏。设置有加强筋的两个连接部连接形成的凹槽结构，在一些焊接方式中，例如钎焊，可以用于放置焊料，以便于焊接。
在一些实施例中，所述加强筋容纳于所述电池单体的端盖与电极端子形成的空间内。
加强筋容纳于电池单体的端盖与电极端子形成的空间内，不需要额外设计容纳加强筋的空间，同时尽可能地减小了加强筋对电池单体造成干涉的可能性，可以避免对电池单体造成破坏，从而能够保证电池的安全性能。
在一些实施例中，所述热管理部件的表面形状与所述电池单体的表面形状相匹配。
这样可以使得热管理部件的表面与电池单体表面接触的面积更大，更有利于调节电池单体的温度，使得电池单体在使用过程中能够保持适宜的温度，保证包括多个电池单体的电池在使用过程中的安全性能。同时，还能够节省电池内部的空间，有利于提高电池的能量密度。
在一些实施例中，所述电池单体组的多个所述电池单体在所述第一方向上粘接于所述热管理部件。
通过将电池单体组的多个电池单体与热管理部件进行粘接，多个电池单体可以通过热管理部件进行固定，以提高电池单体以及多个电池单体形成的电池单体组的强度。同时，能够使得电池单体与热管理部件更加紧密地贴合，提高热管理部件对电池单体的温度的调节作用，使得电池能够在使用过程中保持适宜的温度，提高电池的安全性能。
在一些实施例中，所述连接部表面具有绝缘层。
连接部表面具有绝缘层，能够提高热管理部件的绝缘效果，避免绝缘失效带来的安全隐患问题，进一步提高电池的安全性能。
第二方面，本申请提供了一种用电装置，其包括上述实施例中的电池，所述电池用于为所述用电装置提供电能。
第三方面，本申请提供了一种制备电池的方法，包括：提供沿第一方向层叠设置的多层电池单体组，每层所述电池单体组包括多个呈阵列排布的电池单体；提供多个热管理部件，沿所述第一方向设置于相邻的两层所述电池单体组之间，所述热管理部件用于容纳流体以调节位于所述热管理部件两侧的所述电池单体的温度，多个所述热管理部件在第二方向上相互连接，以隔离相邻的两层所述电池单体组，所述第二方向垂直于所述第一方向。
第四方面，本申请提供了一种制备电池的装置，包括：
第一提供模块，用于提供沿第一方向层叠设置的多层电池单体组，每层所述电池单体组包括多个呈阵列排布的电池单体；
第二提供模块，用于提供多个热管理部件，沿所述第一方向设置于相邻的两层所述电池单体组之间，所述热管理部件用于容纳流体以调节位于所述热管理部件两侧的所述电池单体的温度，多个所述热管理部件在第二方向上相互连接，以隔离相邻的两层所述电池单体组，所述第二方向垂直于所述第一方向。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对本申请实施例中所需要使用的附图作简单地介绍，显而易见地，下面所描述的附图仅仅是本申请的一些实施例，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，还可以根据附图获得其他的附图。
图1是本申请一些实施例提供的车辆的结构示意图；
图2是本申请一些实施例提供的电池的分解结构示意图；
图3是本申请一些实施例提供的一种电池的分解结构示意图；
图4是图3中M部分的放大示意图；
图5是热管理部件的结构示意图；
图6是多个热管理部件相互连接的结构示意图；
图7是本申请实施例提供的一种连接部的示意图；
图8是本申请实施例提供的另一种连接部的示意图；
图9是本申请实施例提供的另一种连接部的示意图；
图10是本申请实施例提供的另一种连接部的示意图；
图11是本申请实施例提供的电池的部分剖面图；
图12是图11中C部分的截面的放大示意图；
图13是本申请一些实施例提供的一种制备电池的方法的示意性流程图；
图14是本申请一些实施例提供的一种制备电池的装置的示意性框图。
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。
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。
在本申请的实施例中，相同的附图标记表示相同的部件，并且为了简洁，在不同实施例中，省略对相同部件的详细说明。应理解，附图示出的本申请实施例中的各种部件的厚度、长宽等尺寸，以及集成装置的整体厚度、长宽等尺寸仅为示例性说明，而不应对本申请构成任何限定。
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模块或电池包等。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，电极组件由正极极片、负极极片和隔离膜组成。电池单体主要依靠金属离子在正极极片和负极极片之间移动来工作。正极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正极集流体凸出于已涂覆正极活性物质层的正极集流体，未涂敷正极活性物质层的正极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负极集流体凸出于已涂覆负极活性物质层的负极集流体，未涂敷负极活性物质层的负极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
(polypropylene，PP)或聚乙烯(polyethylene，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。
对于电池来说，主要的安全危险来自于充电和放电过程，为了提高电池的安全性能，对电池单体一般会设置泄压机构。泄压机构是指电池单体的内部压力或温度达到预定阈值时致动以泄放内部压力的元件或部件。该预定阈值可以根据设计需求不同而进行调整。所述预定阈值可取决于电池单体中的正极极片、负极极片、电解液和隔离膜中一种或几种的材料。泄压机构可以采用诸如对压力敏感或温度敏感的元件或部件，即，当电池单体的内部压力或温度达到预定阈值时，泄压机构致动，从而形成可供内部压力泄放的通道。
本申请中所提到的“致动”是指泄压机构产生动作，从而使得电池单体的内部压力及温度得以被泄放。泄压机构产生的动作可以包括但不限于：泄压机构中的至少一部分破裂、被撕裂或者熔化，等等。泄压机构在致动后，电池单体内部的高温高压物质作为排放物会从泄压机构向外排出。以此方式能够在可控压力或温度的情况下使电池单体发生泄压，从而避免潜在的更严重的事故发生。
本申请中所提到的来自电池单体的排放物包括但不限于：电解液、被溶解或分裂的正负极极片、隔离膜的碎片、反应产生的高温高压气体、火焰，等等。
电池单体上的泄压机构对电池的安全性有着重要影响。例如，当电池单体发生短路、过充等现象时，可能会导致电池单体内部发生热失控从而压力或温度骤升。这种情况下通过泄压机构致动可以将内部压力及温度向外释放，以防止电池单体爆炸、起火。
电池中通常会设置多个电池单体，多个电池单体可以在电池内部以多层结构的形式进行排列。当其中一部分电池单体的泄压机构致动后，电池单体内部的高温高压物质会向外喷射，尤其是电池单体内部发生热失控时产生的气体，极易向外冲出，影响其它层的电池单体。例如，如果发生热失控的电池单体位于多层结构中相对靠下的的下层，则电池单体内部的高温高压物质，例如高温高压气体，容易直接冲击位于多层结构中相对靠上的上层电池单体，导致上层电池单体的温度升高，引发进一步地热失控的问题。
鉴于此，本申请提供了一种电池，包括多个热管理部件，设置于多层电池单体组中相邻的两层电池单体组之间，且相互连接，以隔离相邻的两层所述电池单体组。在电池单体的泄压机构发生致动后，电池单体内部的高温高压物质即使向外喷射，也会被相互连接的电池单体挡住，避免电池单体的泄压机构排出的高温高压物质冲击其他层的电池单体，而引发进一步地热失控的问题，因此能够保证电池的安全性能。
本申请实施例描述的技术方案均适用于各种使用电池的用电设备。用电设备可以是车辆、手机、便携式设备、笔记本电脑、轮船、航天器、电动玩具和电动工具等等。车辆可以是燃油汽车、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；航天器包括飞机、火箭、航天飞机和宇宙飞船等等；电动玩具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；电动工具包括金属切削电动工具、研磨电动工具、装配电动工具和铁道用电动工具，例如，电钻、电动砂轮机、电动扳手、电动螺丝刀、电锤、冲击电钻、混凝土振动器和电刨等等。本申请实施例对上述用电设备不做特殊限制。
以下实施例为了方便说明，以用电设备为车辆为例进行说明。
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30以及电池10，控制器30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。电池也可以称为电池包。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。
例如，图2示出了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20容纳于箱体11内。图2示出了本申请实施例的箱体11的一种可能的实现方式，如图2所示，箱体11可以包括两部分，这里分别称为第一箱体部分111和第二箱体部分112，第一箱体部分111和第二箱体部分112扣合在一起。第一箱体部分111和第二箱体部分112的形状可以根据电池模块200组合的形状而定，第一箱体部分111和第二箱体部分112中至少一个具有一个开口。例如，如图2所示，该第一箱体部分111和第二箱体部分112均可以为中空长方体且各自只有一个面为开口面，第一箱体部分111的开口和第二箱体部分112的开口相对设置，并且第一箱体部分111和第二箱体部分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，第一箱体部分111和第二箱体部分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，这里以第二箱体部分112为中空长方体且只有一个面为开口面，第一箱体部分111为板状为例，那么第一箱体部分111盖合在第二箱体部分112的开口处以形成具有封闭腔室的箱体11，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箱体部分111和第二箱体部分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11而引出。
根据不同的电力需求，电池模块200中的电池单体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，将电池单体20分组设置，每组电池单体20组成电池模块200。电池模块200中包括的电池单体20的数量不限，可以根据需求设置。
电池10可以包括多个电池模块200，这些电池模块200可通过串联、并联或混联的方式进行连接。
图3是本申请一些实施例提供的一种电池10的分解结构示意图，其中示出的电池10包括沿第一方向H层叠设置的多层电池单体组201以及多个热管理部件21，图4是图3中M部分的放大示意图。如图3所示，每层电池单体组201包括多个呈阵列排布的电池单体20，多个热管理部件21沿第一方向H设置于相邻的两层电池 单体组201之间。热管理部件21用于容纳流体以调节位于热管理部件21两侧的电池单体20的温度，多个热管理部件21在第二方向L上相互连接，以隔离相邻的两层电池单体组201，第二方向L垂直于第一方向H。
为了便于理解和描述，本申请提供的实施例中仅以圆柱体形状的电池单体20进行说明，应理解，本申请提供的实施例也适用于长方体形状的电池单体20或软包电池单体20，本申请实施例对此不做限定。
从图3中可以看出，阵列排布指的是将多个电池单体20沿第二方向L和第三方向R排列，在平行于第二方向L和第三方向R所在的平面上排列为一层电池单体组201，第二方向L和第三方向R相互垂直。例如，在图3示出的阵列排布方式中，第二方向L平行于电池单体20的轴线方向。层叠设置指的是将多层电池单体组201沿第一方向H排列，其中，第一方向H垂直于第二方向L和第三方向R形成的平面。应理解，图3中箭头指向的第一方向H、第二方向L和第三方向R均为示意，不表示具体朝向，即第一方向H、第二方向L和第三方向R表示的是平行于图中箭头所在的直线的方向。
在第一方向H上，多层电池单体组201中相邻两层电池单体组201之间可以设置热管理部件21，热管理部件21具有空腔结构，可以容纳流体以调节多个电池单体20的温度。这里的流体可以是液体或气体，调节温度是指给多个电池单体20加热或者冷却。在给电池单体20冷却或降温的情况下，该热管理部件21用于容纳冷却流体以给多个电池单体20降低温度，此时，热管理部件21也可以称为冷却部件、冷却系统或冷却板等，其容纳的流体也可以称为冷却介质或冷却流体，更具体的，可以称为冷却液或冷却气体。另外，热管理部件21也可以用于加热以给多个电池单体20升温，本申请实施例对此并不限定。可选的，所述流体可以是循环流动的，以达到更好的温度调节的效果。可选的，流体可以为水、水和乙二醇的混合液或者空气等。
将位于同一个平面上的热管理部件21称为一层热管理部件组，一层热管理部件组可以包括多个热管理部件21。从图3和图4中可以看出，多个热管理部件21之间在第二方向L上相互连接，以形成没有间隙的一层热管理部件组，从而起到隔离相邻两层电池单体组201的作用。其中，第二方向L垂直于第一方向H。
图3和图4仅示出了两层电池单体组201的层叠设置，这两层电池单体组201之间设置有一层热管理部件组。应理解，电池10中还可以具有更多层电池单体组201的层叠设置，每相邻两层电池单体组201之间可以均设置有一层在第二方向L上相互连接的热管理部件21。
多个热管理部件21连接起来形成一个整体以隔离第一方向H上的两层电池单体组201，可以使得一部分电池单体20在发生热失控后，从泄压机构中排出的高温高压物质不易直接接触到位于其他层的电池单体20，从而避免引发进一步地热失控的问题，保证电池10的安全性能。同时，由多个热管理部件21连接起来形成一个整体，可以降低单个热管理部件21的生产难度，提高生产效率。
根据本申请的一些实施例，可选地，热管理部件21在第二方向L上的端部设置有连接部211，连接部211用于连接相邻的热管理部件21。
热管理部件21在第二方向L上的端部指的是热管理部件21上垂直于第二方向L的部分，例如，可以是垂直于第二方向L的两个端面。连接部211指的是从热管理部件21的端部沿第二方向L延伸的部分。连接部211可以设置于热管理部件21在第二方向L上的两个端部，也可以仅设置于一个端部。例如，在一层热管理部件组的边缘位置的热管理部件21，可以仅在一个端部设置连接部211，用于与另一个热管理部件21连接，而未设置连接部211的端部，可以作为该层热管理部件组的边缘，不与任何热管理部件21连接。
如图5和图6所示，图5示出了多个热管理部件21中的一个热管理部件21，图6示出了多个热管理部件21相互连接形成的一层热管理部件组。将多个图5中的热管理部件21沿第二方向L排列，并通过连接部211相互连接，可以形成图6中示出的一层热管理部件组。图6中示出的热管理部件21的数量和排列方式仅为示例，不做限定。
在一种可能的实施例中，图6示出的一层热管理部件组还可以设置有集流部件212，用于集中控制热管理部件21中的流体。当电池10中设置有多层热管理部件组时，每层热管理部件组可以均设置有集流部件212，也可以多层热管理部件组仅设置一个集流部件212，本申请在此不做限定。
图7是本申请实施例提供的一种连接部211的示意图，示出了图6中的K部分在平行于第一方向H和第二方向L形成的平面上一种可能的截面示意图。从图7中可以看出，由于连接部211设置于热管理部件21在第二方向L上的端部，因此两个热管理部件21端部上的连接部211在第二方向L上相互抵接，以形成没有间隙的一层热管理部件组。
多个热管理部件21通过连接部211连接，能够隔离相邻的两层电池单体组201，在部分电池单体20内部的温度或压力达到阈值时，从电池单体20的泄压机构排出的高温高压物质难以穿过多个热管理部件21形成的热管理部件21层，避免部分电池单体20的热失控影响其他层的电池单体20而引发进一步地热失控的问题，保证电池10的安全性能。
根据本申请的一些实施例，可选地，相连接的两个连接部211中的一者设置有第一台阶结构211A，另一者设置有第二台阶结构211B，第一台阶结构211A与第二台阶结构211B沿第一方向H相对设置，且相互搭接形成焊接平面。
图8是本申请实施例提供的另一种连接部211的示意图，示出了图6中的K部分在平行于第一方向H和第二方向L形成的平面上另一种可能的截面示意图。图8中示出的两个连接部211之间通过相对设置的台阶结构进行搭接，例如，相连接的两个连接部211中的一者设置有第一台阶结构211A，另一者设置有第二台阶结构
211B。第一台阶结构211A与第二台阶结构211B沿第一方向H相对设置，使得两个台阶结构相互搭接后能够形成平面，该平面可以为焊接平面，在需要进行焊接的情况下，便于焊接设备对两个台阶结构相互搭接后形成的缝隙进行焊接。
多个热管理部件21通过设置有台阶结构的连接部211连接，能够增加高温高压物质穿过多个热管理部件21形成的热管理部件21层的路径，有效隔离相邻的两 层电池单体组201，避免部分电池单体20的热失控影响其他层的电池单体20而引发进一步地热失控的问题，保证电池10的安全性能。
根据本申请的一些实施例，可选地，相连接的两个连接部211中的一者沿第二方向L设置有凸起，另一者沿第二方向L设置有凹槽，凸起与凹槽对应设置，且凸起容纳于凹槽中以实现两个连接部211的连接。
图9是本申请实施例提供的另一种连接部211的示意图，示出了图6中的K部分在平行于第一方向H和第二方向L形成的平面上另一种可能的截面示意图。图9中示出的两个热管理部件21之间，相连接的两个连接部211中的一者沿第二方向L设置有凸起，例如，可以由连接部211的垂直于第二方向L的端面上的一部分沿第二方向L延伸而形成。在第一方向H上，即在热管理部件21的厚度方向上，凸起的厚度小于连接部211的厚度，在一种可能的实施方式中，凸起可以位于第一方向H上位于连接部211的端部的中间，其中连接部211的端部指的是连接部211上垂直于第二方向L的部分，例如，可以是垂直于第二方向L的端面。与之连接的另一个连接部211则设置有与凸起对应的凹槽，使得凸起能够容纳于凹槽中，即将凸起插入凹槽中，以实现两个连接部211的连接。
多个热管理部件21通过设置有凸起和凹槽的连接部211连接，能够使得两个连接部211之间的连接更加牢固，增加高温高压物质穿过多个热管理部件21形成的热管理部件21层的路径，能够有效隔离相邻的两层电池单体组201，避免部分电池单体20的热失控影响其他层的电池单体20而引发进一步地热失控的问题，保证电池10的安全性能。
根据本申请的一些实施例，可选地，连接部211上设置有朝向电池单体20凸出的加强筋211C。
图10是本申请实施例提供的另一种连接部211的示意图，示出了图6中的K部分在平行于第一方向H和第二方向L形成的平面上另一种可能的截面示意图。图10中示出了连接部211上设置有朝向电池单体20凸出的加强筋211C，该加强筋211C可以设置在本申请实施例提供的任一种结构的连接部211上。加强筋211C可以朝向被多个热管理部件21隔离的两层电池单体组201中的任一层中的电池单体20凸出，也可以同时朝向两层电池单体组201中的电池单体20凸出。
加强筋211C可以设置于沿第二方向L距离连接部211的端面一定距离的位置处。以图10示出的结构为例，加强筋211C同时在朝向两层电池单体组201中的电池单体20的方向上凸出，两个连接部211相互抵接时可以形成H形结构。
在连接部211的端面附近设置加强筋211C，可以增强连接部211的强度，使得相互连接的连接部211不易被外力破坏。设置有加强筋211C的两个连接部211连接形成的凹槽结构，在一些焊接方式中，例如钎焊，可以用于放置焊料，以便于焊接。
根据本申请的一些实施例，可选地，相连接的两个连接部211通过焊接固定。
在上述图7至图10中示出的连接部211中，均可以通过焊接进行固定。例如，在连接件的端部通过抵接、搭接或插接等方式进行连接时，可以对两个连接部211在垂直于第一方向H的表面上形成的缝隙进行焊接，以使得多个热管理部件21之间的连接更加紧密。
在连接处进行焊接能够使得多个热管理部件21之间的连接更加牢固，使得高温高压物质更加难以穿透多个热管理部件21形成的热管理部件21层，避免部分电池单体20的热失控影响其他层的电池单体20而引发进一步地热失控的问题，进一步保证电池10的安全性能。
根据本申请的一些实施例，可选地，沿第一方向H，连接部211的厚度小于热管理部件21其他部分的厚度，使得连接部211与电池单体20之间具有间隙，间隙用于避让电池单体20的端盖与侧壁的连接处。
如图11和图12所示，图11是本申请实施例提供的电池10的部分剖面图，该剖面平行于第一方向H和第二方向L形成的平面，且经过一个电池单体20的轴线，图12为图11中C部分在该剖面上的截面的方式示意图。从图11和图12中可以看出，热管理部件21的连接部211的厚度小于热管理部件21其他部分的厚度，即连接部211是由热管理部件21垂直于第二方向L的端面上的一部分，沿第二方向L延伸而形成的。
连接部211与电池单体20之间具有间隙指的是，电池单体20被放置于热管理部件21的垂直于其厚度方向的表面上时，电池单体20的侧壁的一部分与热管理部件21不接触。该不接触的部分可以例如是电池单体20的端盖与侧壁的连接处。
电池单体20的端盖与侧壁往往通过焊接的方式进行连接，容易在焊缝处形成不平整区域，电池单体20的端盖与侧壁的连接处直接接触热管理部件21容易破坏热管理部件21表面涂覆的绝缘层，造成绝缘失效以及焊缝破坏等问题。因此连接部211与电池单体20之间具有间隙，能够避让电池单体20的端盖与侧壁的连接处，避免上述问题的产生。
连接部211与电池单体20之间具有间隙能够避免电池单体20的端盖与侧壁的连接处破坏热管理部件21表面的绝缘层，而造成的绝缘失效的问题，保证电池10的安全性能。
根据本申请的一些实施例，可选地，连接部211表面具有绝缘层。
热管理部件21的表面往往涂覆有绝缘材料，以使得热管理部件21与电池单体20之间绝缘。即使热管理部件21的连接部211与电池单体20不接触，也可以将绝缘材料涂覆于连接部211的表面，在连接部211的表面形成绝缘层，以进一步提高绝缘效果。
连接部211表面具有绝缘层，能够提高热管理部件21的绝缘效果，避免绝缘失效带来的安全隐患问题，进一步提高电池10的安全性能。
根据本申请的一些实施例，可选地，加强筋211C容纳于电池单体20的端盖与电极端子形成的空间内。
由于连接部211上设置有朝向电池单体20凸出的加强筋211C，在朝向电池单体20的方向上，加强筋211C需要占用一定的空间，有可能会对电池单体20造成干涉。因此，可以将加强筋211C设置在电池单体20的端盖与电极端子形成的空间内。如图11和图12所示，当第二方向L的两个电池单体20通过端盖上的电极端子连接时，电极端子与端盖可以形成一定的空间，该空间在图12所示的截面上体现为一端开口的凹陷结构，该凹陷结构的内部以及沿开口向外延伸的部分均可以称为电池单体20的端盖与电极端子形成的空间。
加强筋211C容纳于电池单体20的端盖与电极端子形成的空间内，不需要额外设计容纳加强筋211C的空间，同时尽可能地减小了加强筋211C对电池单体20造成干涉的可能性，可以避免对电池单体20造成破坏，从而能够保证电池10的安全性能。
根据本申请的一些实施例，可选地，热管理部件21的表面形状与电池单体20的表面形状相匹配。
热管理部件21的表面也可以具有与电池单体20表面形状相匹配的形状，例如，电池单体20为圆柱体形状时，热管理部件21的表面可以具有与之相匹配的圆弧面，如图11和图12所示。图11和图12示出了电池10中沿第三方向R设置有两层电池单体20时的热管理部件21，其中，两层电池单体20之间交错设置以节省空间，热管理部件21在其厚度方向上的截面具有波浪形，同时与热管理部件21两个表面上的电池单体20的表面形状相匹配。
这样可以使得热管理部件21的表面与电池单体20表面接触的面积更大，更有利于调节电池单体20的温度，使得电池单体20在使用过程中能够保持适宜的温度，保证包括多个电池单体20的电池10在使用过程中的安全性能。同时，还能够节省电池10内部的空间，有利于提高电池10的能量密度。
根据本申请的一些实施例，可选地，电池单体组201的多个电池单体20在第一方向H上粘接于热管理部件21。
沿第一方向H层叠设置的多层电池单体组201中的电池单体20可以与热管理部件21之间进行粘接。例如，可以在热管理部件21的朝向电池单体20的一侧涂覆粘接剂，使得热管理部件21沿第一方向H设置于相邻的两层电池单体组201之间时，可以通过粘接剂与电池单体组201中的多个电池单体20进行粘接。
通过将电池单体组201的多个电池单体20与热管理部件21进行粘接，多个电池单体20可以通过热管理部件21进行固定，以提高电池单体20以及多个电池单体20形成的电池单体组201的强度。同时，能够使得电池单体20与热管理部件21更加紧密地贴合，提高热管理部件21对电池单体20的温度的调节作用，使得电池10能够在使用过程中保持适宜的温度，提高电池10的安全性能。
根据本申请的一些实施例，本申请还提供了一种用电装置，包括以上任一方案所述的电池10，电池10用于为用电装置提供电能。
上文描述了本申请实施例提供的电池单体20、电池10和用电装置，下面将结合图13和图14描述本申请实施例提供的制备电池单体20的方法和装置，其中未详细描述的部分可参见前述各实施例。
图13是本申请一些实施例提供的一种制备电池10的方法的示意性流程图。如图13所示，该方法1300可以包括：
1301、提供沿第一方向H层叠设置的多层电池单体组201，每层电池单体组201包括多个呈阵列排布的电池单体20；
1302、提供多个热管理部件21，沿第一方向H设置于相邻的两层电池单体组201之间，热管理部件21用于容纳流体以调节位于热管理部件21两侧的电池单体20的温度，多个热管理部件21在第二方向L上相互连接，以隔离相邻的两层电池单体组201，第二方向L垂直于第一方向H。
图14是本申请一些实施例提供的一种制备电池10的装置的示意性框图。如图14所示，该装置1400可以包括：
第一提供模块1401，用于提供沿第一方向H层叠设置的多层电池单体组201，每层电池单体组201包括多个呈阵列排布的电池单体20；
第二提供模块1402，用于提供多个热管理部件21，沿第一方向H设置于相邻的两层电池单体组201之间，热管理部件21用于容纳流体以调节位于热管理部件21两侧的电池单体20的温度，多个热管理部件21在第二方向L上相互连接，以隔离相邻的两层电池单体组201，第二方向L垂直于第一方向H。
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 (14)

  1. 一种电池，其特征在于，包括：
    沿第一方向层叠设置的多层电池单体组，每层所述电池单体组包括多个呈阵列排布的电池单体；
    多个热管理部件，沿所述第一方向设置于相邻的两层所述电池单体组之间，所述热管理部件用于容纳流体以调节位于所述热管理部件两侧的所述电池单体的温度，多个所述热管理部件在第二方向上相互连接，以隔离相邻的两层所述电池单体组，所述第二方向垂直于所述第一方向。
  2. 根据权利要求1所述的电池，其特征在于，所述热管理部件在所述第二方向上的端部设置有连接部，所述连接部用于连接相邻的所述热管理部件。
  3. 根据权利要求2所述的电池，其特征在于，沿所述第一方向，所述连接部的厚度小于所述热管理部件其他部分的厚度，使得所述连接部与所述电池单体之间具有间隙，所述间隙用于避让所述电池单体的端盖与侧壁的连接处。
  4. 根据权利要求2或3所述的电池，其特征在于，相连接的两个所述连接部通过焊接固定。
  5. 根据权利要求2至4中任一项所述的电池，其特征在于，相连接的两个所述连接部中的一者设置有第一台阶结构，另一者设置有第二台阶结构，所述第一台阶结构与所述第二台阶结构沿所述第一方向相对设置，且相互搭接形成焊接平面。
  6. 根据权利要求2至4中任一项所述的电池，其特征在于，相连接的两个所述连接部中的一者沿所述第二方向设置有凸起，另一者沿所述第二方向设置有凹槽，所述凸起与所述凹槽对应设置，且所述凸起容纳于所述 凹槽中以实现两个所述连接部的连接。
  7. 根据权利要求2至6中任一项所述的电池，其特征在于，所述连接部上设置有朝向所述电池单体凸出的加强筋。
  8. 根据权利要求7所述的电池，其特征在于，所述加强筋容纳于所述电池单体的端盖与电极端子形成的空间内。
  9. 根据权利要求1至8中任一项所述的电池，其特征在于，所述热管理部件的表面形状与所述电池单体的表面形状相匹配。
  10. 根据权利要求1至9中任一项所述的电池，其特征在于，所述电池单体组的多个所述电池单体在所述第一方向上粘接于所述热管理部件。
  11. 根据权利要求1至10中任一项所述的电池，其特征在于，所述连接部表面具有绝缘层。
  12. 一种用电装置，其特征在于，包括：权利要求1至11中任一项所述的电池，所述电池用于为所述用电装置提供电能。
  13. 一种制备电池的方法，其特征在于，包括：
    提供沿第一方向层叠设置的多层电池单体组，每层所述电池单体组包括多个呈阵列排布的电池单体；
    提供多个热管理部件，沿所述第一方向设置于相邻的两层所述电池单体组之间，所述热管理部件用于容纳流体以调节位于所述热管理部件两侧的所述电池单体的温度，多个所述热管理部件在第二方向上相互连接，以隔离相邻的两层所述电池单体组，所述第二方向垂直于所述第一方向。
  14. 一种制备电池的装置，其特征在于，包括：
    第一提供模块，用于提供沿第一方向层叠设置的多层电池单体组，每层所述电池单体组包括多个呈阵列排布的电池单体；
    第二提供模块，用于提供多个热管理部件，沿所述第一方向设置于相邻的两层所述电池单体组之间，所述热管理部件用于容纳流体以调节位于 所述热管理部件两侧的所述电池单体的温度，多个所述热管理部件在第二方向上相互连接，以隔离相邻的两层所述电池单体组，所述第二方向垂直于所述第一方向。
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