WO2023160118A1 - 电池、用电装置 - Google Patents

电池、用电装置 Download PDF

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Publication number
WO2023160118A1
WO2023160118A1 PCT/CN2022/137959 CN2022137959W WO2023160118A1 WO 2023160118 A1 WO2023160118 A1 WO 2023160118A1 CN 2022137959 W CN2022137959 W CN 2022137959W WO 2023160118 A1 WO2023160118 A1 WO 2023160118A1
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WO
WIPO (PCT)
Prior art keywords
channel
side plate
battery
cooling element
joint
Prior art date
Application number
PCT/CN2022/137959
Other languages
English (en)
French (fr)
Inventor
周严东
曹根
黄银成
沈圳
Original Assignee
宁德时代新能源科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Publication of WO2023160118A1 publication Critical patent/WO2023160118A1/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
    • 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
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • 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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present application relates to the technical field of new energy batteries, in particular to a battery and an electrical device.
  • the present application provides a battery, including a case, a battery cell, and a cooling element.
  • the box body is provided with an accommodation cavity; the number of the battery cells is multiple, and a plurality of the battery cells are arranged in the accommodation cavity along a preset direction; the cooling element is arranged on the battery cells body along at least one side of the predetermined direction, and a first channel is provided inside the cooling element; wherein, the box body is a hollow structure to form a second channel on the box body, and the first channel and The second channel communicates.
  • the second channel is formed by setting the box body as a hollow structure, and the second channel communicates with the first channel in the cooling element, so that the first channel and the second channel form a cooling circuit to realize Cooling fluid can circulate between the first channel and the second channel to cool down the battery cells.
  • Such an arrangement can reduce the space occupied by the cooling circuit in the battery to a greater extent, and compared with the tubular cooling circuit, the box structure is stronger, and the second channel is formed by using the box to make the structural strength of the cooling circuit more reliable. higher.
  • the first channel and the second channel are detachably communicated through a connection assembly.
  • the first channel and the second channel are detachably connected, on the one hand, it is convenient for battery assembly, and it is convenient for the box body and the cooling element to be assembled after forming separately, and the efficiency of battery forming and assembly is improved; On the other hand, it is also convenient to replace the box body or cooling parts during battery maintenance and repair.
  • connection assembly includes a first joint and a second joint.
  • the first joint is connected to the cooling element and communicated with the first channel;
  • the second joint is connected to the box body and communicated with the second channel; wherein, the first joint and the second joint are detachably connected.
  • the first joint and the second joint are detachably connected to the cooling element and the box to realize the detachable communication between the first channel and the second channel, which improves battery assembly efficiency and facilitates maintenance and repair.
  • the battery includes the first conduit and/or the second conduit.
  • One end of the first pipeline communicates with the first joint, and the other end communicates with the first passage; and/or, the second pipeline, one end of the second pipeline communicates with the second joint, and the other end communicates with the second passage; wherein, the first pipeline and /or the second conduit is a flexible pipe.
  • the flexible structure of the flexible pipe is used to realize the functions of facilitating assembly, absorbing assembly tolerances, and absorbing energy under vibration and shock conditions, thereby improving the reliability of the battery.
  • the box body includes a plurality of side plates, the plurality of side plates enclose to form an accommodating chamber, a second channel is formed in the side plates, and the cooling element is detachably connected to the inner side of the side plates.
  • the position of the cooling element in the accommodating cavity can be fixed, so as to avoid the displacement of the cooling plate during battery use , on the other hand, it can facilitate the assembly and disassembly of the box body and the cooling plate, and facilitate the improvement of battery assembly efficiency.
  • the inner side of the side plate is provided with a connecting groove, and the end of the cooling element close to the side plate is accommodated in the connecting groove, so as to realize the detachable connection between the cooling element and the inner side of the side plate.
  • the position of the cooling plate can be restricted to prevent the cooling plate from moving relative to the side plate, and the cooling element can be realized. and side panels are detachably connected.
  • thermal conductive glue is filled between the connection groove and the cooling element.
  • the thermal conductivity of the thermally conductive glue can improve the heat conduction performance of the cooling element and the side plate of the box body, and facilitate the heat conduction of the cooling element to The side plate can improve the heat dissipation effect.
  • the viscosity of the thermally conductive adhesive can make the connection between the cooling element and the connection slot more firm.
  • connection groove is provided with a guide structure, so as to facilitate the assembly of the cooling element and the side plate.
  • the side panels at least include a first side panel, a second side panel, and a third side panel that are oppositely arranged.
  • the first side plate and the second side plate are connected to the cooling element and communicate with the first channel;
  • the third side plate is adjacent to the first side plate and the second side plate, and the third side plate is connected to the second channel
  • the water inlet and the water outlet are connected; the second channel of the first side plate, the second side plate and the third side plate and the first channel of the cooling element form a cooling circuit.
  • the cooling circuit is formed by the second channel inside the first side plate, the second side plate, the third side plate and the first channel of the cooling element, so as to facilitate the circulation of the cooling liquid, so as to realize the cooling of the battery cells.
  • the cooling function of the body can reduce the space occupied by the cooling circuit in the battery to a greater extent, and make the structural strength and reliability of the cooling circuit higher.
  • the present application also provides an electrical device, including the battery in any one of the above implementation manners, where the battery is used to provide electrical energy.
  • Fig. 1 is a schematic structural view of a vehicle shown in an embodiment of the present application
  • FIG. 2 is a schematic diagram of an exploded structure of a battery shown in an embodiment of the present application.
  • Fig. 3 is a schematic structural diagram showing the connection of the box body and the cooling element shown in an embodiment of the present application;
  • Fig. 4 is an enlarged schematic diagram of place A in Fig. 3;
  • Fig. 5 is a schematic structural view of the casing in Fig. 3;
  • Fig. 6 is an enlarged schematic view at B in Fig. 5;
  • Fig. 7 is a schematic diagram of the assembly of the cooling element and the battery cell in Fig. 2;
  • Fig. 8 is an enlarged schematic diagram at C in Fig. 7;
  • FIG. 9 is another embodiment of the enlarged schematic diagram at C in FIG. 7 .
  • multiple refers to more than two (including two), similarly, “multiple groups” refers to more than two groups (including two), and “multiple pieces” refers to More than two pieces (including two pieces).
  • Batteries are not only used in energy storage power systems such as hydropower, firepower, wind power and solar power plants, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric vehicles, as well as military equipment and aerospace and other fields. With the continuous expansion of battery application fields, its market demand is also constantly expanding.
  • a cooling system is usually installed in the battery to facilitate the heat dissipation of the battery cells.
  • electric vehicle batteries usually use the solution of setting independent water-cooling tubes inside the battery to transport coolant. This solution takes up a lot of space, and the water-cooling tubes are prone to leakage after working in long-term vibration and shock conditions.
  • the inventors have found through research that a channel can be reserved for the cooling system inside the battery box.
  • the battery box can be set as a hollow structure, and the hollow channel inside the battery box can be used to transport coolant to reduce the space occupied by the cooling system.
  • the structure of the box itself can be used to improve the strength and reliability, and avoid leakage due to vibration and impact. .
  • the inventor designed a battery after in-depth research, by setting a hollow structure inside the battery box to form a channel, and connecting the channel to the cooling element
  • the internal channel of the cooling circuit is formed to reduce the space occupied by the cooling circuit and improve the reliability of the structural strength.
  • the batteries disclosed in the embodiments of the present application can be used, but not limited to, in electric devices such as vehicles, ships or aircrafts.
  • a power supply system comprising the electric device can be composed of the battery disclosed in the present application.
  • the embodiment of the present application provides an electric device using a battery as a power source.
  • the electric device can be, but not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like.
  • electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric boat toys, electric airplane toys, etc.
  • spacecraft may include airplanes, rockets, space shuttles, spaceships, etc.
  • a vehicle 1000 as an electric device according to an embodiment of the present application is taken as an example for description.
  • FIG. 1 is a schematic structural diagram of a vehicle 1000 provided by some embodiments of the present application.
  • the vehicle 1000 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 an extended-range vehicle.
  • the interior of the vehicle 1000 is provided with a battery 100 , and the battery 100 may be provided at the bottom, head or tail of the vehicle 1000 .
  • the battery 100 can be used for power supply of the vehicle 1000 , for example, the battery 100 can be used as an operating power source of the vehicle 1000 .
  • the vehicle 1000 may further include a controller 200 and a motor 300 , the controller 200 is used to control the battery 100 to supply power to the motor 300 , for example, for starting, navigating and running the vehicle 1000 .
  • the battery 100 can not only be used as an operating power source for the vehicle 1000 , but can also be used as a driving power source for the vehicle 1000 , replacing or partially replacing fuel oil or natural gas to provide driving power for the vehicle 1000 .
  • FIG. 2 is a battery 100 shown in an embodiment of the present application, including a case 110 , a battery cell 120 and a cooling element 130 .
  • the box body 110 is provided with a receiving cavity 111 .
  • There are multiple battery cells 120 and the multiple battery cells 120 are arranged in the accommodation chamber 111 along a preset direction.
  • the cooling element 130 is arranged on at least one side of the battery cell 120 along a predetermined direction, and a first channel is provided inside the cooling element 130; wherein, the box body 110 is a hollow structure to form a second channel on the box body 110, and the first channel connected to the second channel.
  • the box body 110 is used to provide accommodating space for the battery cells 120 , and the box body 110 may adopt various structures.
  • the battery 100 further includes a cover body 150 , and the cover body 150 and the box body 110 cover each other, and the cover body 150 and the box body 110 jointly define an accommodating cavity 111 for accommodating the battery cell 120 .
  • the box body 110 can be a hollow structure with one end open, and the cover body 150 can be a plate-shaped structure, and the cover body 150 covers the opening side of the box body 110 so that the cover body 150 and the box body 110 jointly define an accommodation space.
  • the cover body 150 and the box body 110 can also be hollow structures with one side opening, and the opening side of the cover body 150 covers the opening side of the box body 110 .
  • the box body 110 may be in various shapes, such as a cylinder, a cuboid, etc., which is not limited in this embodiment of the present application.
  • the battery 100 there may be multiple battery cells 120 , and the multiple battery cells 120 may be connected in series, in parallel or in parallel.
  • the hybrid connection refers to both series and parallel connections.
  • the plurality of battery cells 120 can be directly connected in series, in parallel or mixed together, and then the whole composed of the plurality of battery cells 120 is housed in the case 110 .
  • the battery 100 can also be in the form of a plurality of battery cells 120 connected in series, parallel or mixed firstly to form a battery module, and then multiple battery modules are connected in series, parallel or mixed to form a whole, and accommodated in the box 110 .
  • the battery 100 may also include other structures, for example, the battery 100 may also include a current flow component for realizing electrical connection between a plurality of battery cells 120 .
  • each battery cell 120 may be a secondary battery 100 or a primary battery 100 ; it may also be a lithium-sulfur battery 100 , a sodium-ion battery 100 or a magnesium-ion battery 100 , but is not limited thereto.
  • the battery cell 120 may be in the form of a cylinder, a flat body, a cuboid or other shapes.
  • a first channel is provided in the cooling element 130 , and the first channel is used for the flow of cooling liquid, so that the flowing cooling liquid can take away the heat generated by the battery cell 120 , so that the cooling element 130 can cool down the temperature of the battery cell 120 .
  • the cooling element 130 is arranged on at least one side of the battery cell 120 along a preset direction. In the embodiment shown in FIG. The bonding area of 130 is large, which facilitates the heat transfer between the battery cell 120 and the cooling element 130 .
  • the box body 110 is set as a hollow structure to form a second channel on the box body 110.
  • the second channel provided in the box body 110 is also used for cooling fluid flow, and the second channel communicates with the first channel in the cooling element 130, so that The second channel is capable of providing coolant to the first channel.
  • the second channel communicates with the first channel to form a cooling circuit, so that the cooling liquid can circulate between the first channel and the second channel, so that the flowing cooling liquid can take away the heat generated by the battery cells 120 to realize the cooling of the battery. Cooling effect of monomer 120.
  • the second channel is formed by setting the box body 110 as a hollow structure, and the second channel communicates with the first channel in the cooling element 130, so that the first channel and the second channel form a cooling circuit, so that the cooling liquid can be Cycle between the first channel and the second channel to cool down the battery cells 120 .
  • Such an arrangement can reduce the space occupied by the cooling circuit in the battery 100 to a greater extent, and compared with the tubular cooling circuit, the structure of the box body 110 is stronger, and the structure of the cooling circuit is formed by using the second channel formed by the box body 110 Higher strength and reliability.
  • the first channel and the second channel are detachably communicated through the connection assembly 140 .
  • the first channel and the second channel By setting the first channel and the second channel to be detachably connected, on the one hand, it is convenient to assemble the battery 100, and it is convenient to assemble the box body 110 and the cooling member 130 after they are formed separately, so as to improve the forming and assembling efficiency of the battery 100; on the other hand, it is also convenient It is convenient to replace the box body 110 or the cooling member 130 during the maintenance and repair of the battery 100 .
  • first channel and the second channel may also be connected in a non-detachable manner, such as welding, hot-melt connection and the like.
  • the connection assembly 140 includes a first joint 141 and a second joint 142 .
  • the first joint 141 is connected to the cooling element 130 and communicates with the first passage;
  • the second joint 142 is connected to the box body 110 and communicates with the second passage; wherein, the first joint 141 and the second joint 142 are detachably connected.
  • first connector 141 and the second connector 142 are adapted to each other to achieve detachable connection.
  • the first joint 141 and the second joint 142 may be ferrule-type pipe joints, flare-type pipe joints, buckle-type rubber hose joints, and the like.
  • the first joint 141 is connected to the cooling element 130. Specifically, the first joint 141 can be directly connected to the cooling element 130. Of course, the first joint 141 can be indirectly connected to the cooling element 130 through intermediate connectors such as pipes; the second joint 142 and The connection method of the box body 110 is also the same, which will not be repeated here.
  • the first joint 141 and the second joint 142 are detachably connected to the cooling element 130 and the box body 110 to achieve detachable communication between the first channel and the second channel, which improves the assembly efficiency of the battery 100 and facilitates maintenance and repair.
  • the connecting component 140 may also be a conventional connecting piece, such as a threaded connecting piece, a flanged connecting piece, and the like.
  • the battery 100 includes a first pipe 160 and/or a second pipe 170 .
  • One end of the first pipeline 160 communicates with the first joint 141, and the other end communicates with the first passage; and/or, the second pipeline 170, one end of the second pipeline 170 communicates with the second joint 142, and the other end communicates with the second passage; wherein , the first conduit 160 and/or the second conduit 170 is a flexible pipe.
  • the battery 100 includes a first pipeline 160 , one end of the first pipeline 160 communicates with the first joint 141 , and the other end communicates with the first channel, and the first pipeline 160 is a flexible tube.
  • the battery 100 may also include a fourth joint (not shown in the figure), through which the connection between the first channel and the first pipeline 160 is realized, and the optional connection between the fourth joint and the first pipeline 160 may be It is a detachable connection, so as to facilitate the replacement and maintenance of the first pipeline 160 .
  • the second pipe 170 is a flexible pipe.
  • the battery 100 may also include a third joint 143 through which the second channel and the second pipeline 170 are connected.
  • the third joint 143 and the second pipeline 170 There may be a detachable connection between them, so as to facilitate the replacement and maintenance of the second pipeline 170 .
  • the battery 100 may also include a first pipeline 160 and a second pipeline 170, wherein one end of the first pipeline 160 communicates with the first joint 141, and the other end communicates with the first channel. , one end of the second pipe 170 communicates with the second joint 142 and the other end communicates with the second channel, and at least one of the first pipe 160 and the second pipe 170 is a flexible pipe.
  • the flexible pipe can be made of flexible material, such as rubber material, plastic hose, etc.
  • the battery 100 includes a first pipe 160 , one end of the first pipe 160 communicates with the first joint 141 , and the other end communicates with the first channel, and the first pipe 160 is a flexible pipe.
  • the flexible and deformable characteristics of the flexible pipe are used to facilitate assembly, absorb assembly tolerances, and absorb energy in vibration and shock conditions, thereby improving manufacturability and mechanism reliability.
  • the box body 110 includes a plurality of side plates 113, and the plurality of side plates 113 are enclosed to form an accommodating cavity 111, and a second channel is formed in the side plates 113 , the cooling element 130 is detachably connected to the inner side of the side plate 113 .
  • the box body 110 may further include a bottom plate, and the bottom plate, the side plate 113 and the cover body 150 together form an accommodating cavity 111 for placing the battery cells 120 , cooling elements 130 and the like.
  • the position of the cooling element 130 in the accommodating cavity 111 can be fixed to avoid the displacement of the cooling plate during the use of the battery 100;
  • the assembly and disassembly of the box body 110 and the cooling plate can be facilitated, and the assembly efficiency of the battery 100 can be improved.
  • the inner side of the side plate 113 is provided with a connecting groove 112, and the end of the cooling element 130 close to the side plate 113 is accommodated in the connecting groove 112, so that the cooling element 130 It is detachably connected with the inner side of the side plate 113 .
  • the connecting groove 112 is arranged on the inner side of the side plate 113, which may be a groove formed by being recessed on the inner surface of the side plate 113, or may be formed by protruding outward on the inner surface of the side plate 113 to connect two protrusions.
  • the grooves formed between them in the embodiment shown in Figure 5 and Figure 6, the connection groove 112 protrudes outward from the inner surface of the side plate 113, which is more convenient for processing .
  • the connecting groove 112 By setting the connecting groove 112 on the inner side of the side plate 113, and the end of the cooling element 130 is accommodated in the connecting groove 112, the position of the cooling plate can be limited to prevent the cooling plate from moving relative to the side plate 113, and the cooling element 130 and the side plate can be realized. 113 detachable connection.
  • thermal conductive glue is filled between the connecting groove 112 and the cooling element 130 .
  • Thermally conductive adhesive has excellent resistance to alternating cold and heat, aging resistance and electrical insulation, and has excellent moisture resistance, shock resistance, corona resistance, leakage resistance and chemical medium resistance. Thermally conductive adhesive can be used continuously at -60-280°C and maintains performance, does not swell, and has good adhesion to most metal and non-metal materials.
  • the thermal conductivity of the thermally conductive glue can improve the heat conduction performance between the cooling element 130 and the side plate 113 of the box body 110, so as to facilitate the heat conduction of the cooling element 130 to the side plate 113 , can improve the heat dissipation effect, on the other hand, the viscosity of the thermally conductive adhesive can make the connection between the cooling element 130 and the connecting groove 112 more firm.
  • connection groove 112 is provided with a guide structure 1121 to facilitate the assembly of the cooling element 130 and the side plate 113 .
  • the guide structure 1121 is located at the top of the connecting groove 112 .
  • the guide structure 1121 may also be disposed at the other end of the connection groove 112 , and the cooling element 130 is inserted from the other end to the top to be assembled in the connection groove 112 .
  • guide structures 1121 may also be provided at both ends of the connection groove 112 .
  • the width of the guide structure 1121 gradually increases from one end connected to the connecting groove 112 to the other end. That is, the guide structure 1121 adopts a funnel-shaped structure design, the opening width of the guide structure 1121 is relatively large, and the width of the guide structure 1121 gradually decreases from the opening end to the other end of the connecting groove 112 .
  • the side plate 113 includes at least a first side plate 1131 , a second side plate 1132 , and a third side plate 1133 that are oppositely arranged.
  • the first side plate 1131 and the second side plate 1132 are connected to the cooling element 130 and communicate with the first channel;
  • the third side plate 1133 is adjacent to the first side plate 1131 and the second side plate 1132, and the third side plate 1133
  • a water inlet 114 and a water outlet 115 communicating with the second channel are provided;
  • the second channel of the first side plate 1131 , the second side plate 1132 and the third side plate 1133 and the first channel of the cooling element 130 form a cooling circuit.
  • the insides of the first side plate 1131 , the second side plate 1132 and the third side plate 1133 are all hollow structures and jointly form a second channel.
  • the coolant enters the second channel from the water inlet 114 of the third side plate 1133, and enters the second channel in one of the first side plate 1131 and the second side plate 1132 along the second channel.
  • the cooling liquid flows along the second channel to the third side plate 1133 and is discharged from the cooling circuit through the water outlet 115 to complete the cooling liquid flow.
  • the cooling liquid can be cooling water, or other liquids that can be used for cooling.
  • the cooling circuit is formed by the second channel inside the first side plate 1131 , the second side plate 1132 , and the third side plate 1133 and the first channel of the cooling element 130 , which facilitates the circulation of the cooling liquid and realizes the continuous cooling of the battery cells 120
  • the function can reduce the space occupied by the cooling circuit in the battery 100 to a greater extent, and make the structural strength and reliability of the cooling circuit higher.
  • the side plate 113 may include a first side plate 1131 and a second side plate 1132, the first side plate 1131 and the second side plate 1132 are oppositely arranged, and the first side plate 1131 and the second side plate 1132 Both ends of the cooling member 130 are respectively connected.
  • the first side plate 1131 and the second side plate 1132 are both hollow structures and form a second channel, and the second channels of the first side plate 1131 and the second side plate 1132 are connected with the first channel of the cooling element 130 and form a second channel. cooling circuit.
  • One of the first side plate 1131 and the second side plate 1132 is provided with the water inlet 114
  • the other of the first side plate 1131 and the second side plate 1132 is provided with the water outlet 115 .
  • the water inlet 114 in one of the first side plate 1131 and the second side plate 1132 enters the second channel, enters the first channel of the cooling element 130 through the connection assembly 140, and is fed by the other cooling element 130.
  • One end enters the water outlet 115 of the other of the first side plate 1131 and the second side plate 1132 and flows out to complete the flow of cooling liquid.
  • the present application provides a battery 100 , including a box body 110 , a battery cell 120 and a cooling element 130 disposed inside the box body 110 .
  • the cooling element 130 is detachably connected to the inner side of the side plate 113 of the box body 110 .
  • the box body 110 is hollow and forms a second channel inside.
  • the cooling element 130 is provided with a first channel, and the first channel is detachably connected to the second channel.
  • the first channel and the second channel are connected to form a cooling circuit, which facilitates the circulation of the cooling liquid, so as to realize the cooling function of the battery cells 120 .
  • Such an arrangement can reduce the space occupied by the cooling circuit in the battery 100 to a greater extent, and compared with the tubular cooling circuit, the structure of the box body 110 is stronger, and the second channel is formed by using the box body 110 to make the structure of the cooling circuit Higher strength and reliability.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
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Abstract

本申请涉及一种电池和用电装置，通过在箱体(110)设为中空结构以形成第二通道，且第二通道与冷却件(130)内的第一通道连通，使得第一通道和第二通道形成冷却回路，实现冷却液可以在第一通道和第二通道之间循环，以对电池单体(120)降温。能够更大程度地减少冷却回路在电池(100)内所占空间，且相较于管状冷却回路，箱体结构更坚固，利用箱体(110)形成第二通道以使冷却回路的结构强度可靠性更高。

Description

电池、用电装置
交叉引用
本申请引用于2022年02月25日递交的名称为“电池、用电装置”的第202220392568.2号中国专利申请，其通过引用被全部并入本申请。
技术领域
本申请涉及新能源电池技术领域，特别是涉及一种电池、用电装置。
背景技术
节能减排是汽车产业可持续发展的关键，电动车辆由于其节能环保的优势成为汽车产业可持续发展的重要组成部分。对于电动车辆而言，电池技术又是关乎其发展的一项重要因素。
电池在充放电的使用过程中，会产生热量，需要在电池内部设置冷却系统以使电芯及时散热。现有的电池存在空间利用率低且冷却系统可靠性差的问题。
发明内容
基于此，有必要提供一种电池和用电装置，旨在解决目前存在的电池空间利用率低且冷却系统可靠性差的问题。
第一方面，本申请提供了一种电池，包括箱体、电池单体和冷却件。所述箱体设有容纳腔；所述电池单体的数量为多个，多个所述电池单体沿预设方向排列设置于所述容纳腔内；所述冷却件设置在所述电池单体沿所述预设方向的至少一侧，所述冷却件内部设有第一通道；其中，所述箱体为中空结构以在所述箱体上形成第二通道，所述第一通道与所述第二通道连通。
本申请实施例的技术方案中，通过将箱体设为中空结构以形成第二通道，且第二通道与冷却件内的第一通道连通，使得第一通道和第二通道形成冷却回路，实现冷却液可以在第一通道和第二通道之间循环，以对电池单体降温。这样的设置方式，能够更大程度地减少冷却回路在电池内所占空间，且相较于管状冷却回路，箱体结构更坚固，利用箱体形成第二通道以使冷却回路的结构强度可靠性更高。
在一些实施例中，第一通道和第二通道通过连接组件可拆卸地连通。
本申请实施例的技术方案中，通过将第一通道和第二通道设置为可拆卸地连通，一方面，便于电池组装，方便箱体、冷却件分别成型后组装，提高电池成型和组装效率；另一方面，还便于电池维护、维修过程中更换箱体或冷却件。
在一些实施例中，连接组件包括第一接头和第二接头。第一接头连接于冷却件且与第一通道连通；第二接头连接于箱体且与第二通道连通；其中，第一接头与第二接头可拆卸连接。
本申请实施例的技术方案中，通过第一接头和第二接头可拆卸地连通冷却件和箱体，以实现第一通道和第二通道可拆卸地连通，提高电池组装效率且便于维护维修。
在一些实施例中，电池包括第一管道和/或第二管道。第一管道一端与第一接头连通，另一端与第一通道连通；和/或，第二管道，第二管道一端与第二接头连通，另一端与第二通道连通；其中，第一管道和/或第二管道为柔性管。
本申请实施例的技术方案中，通过在冷却件和箱体之间设置柔性管，利用柔性管的柔性结构实现便于装配、吸收装配公差以及吸收振动冲击工况的能量的功能，提高电池的可制造性和机构可靠性。
在一些实施例中，箱体包括多个侧板，多个侧板围合形成容纳腔，侧板内形成第二通道，冷却件可拆卸地连接于侧板的内侧。
本申请实施例的技术方案中，通过将箱体和冷却件可拆卸地连接于侧板的内侧，一方面能够使得冷却件在容纳腔内的位置固定，避免在电池使用过程中冷却板移位，另一方面，能够便于箱体和冷却板组装拆卸，便于提高电池装配效率。
在一些实施例中，侧板的内侧设有连接槽，冷却件靠近侧板的端部容纳于连接槽中，以实现冷却件与侧板的内侧可拆卸连接。
本申请实施例的技术方案中，通过在侧板的内侧设置连接槽，且冷却件的端部容纳于连接槽中，能够限制冷却板的位置避免冷却板相对侧板移动，且能够实现冷却件和侧板可拆卸连接。
在一些实施例中，连接槽和冷却件之间填充有导热胶。
本申请实施例的技术方案中，通过在连接槽和冷却件之间填充导热胶，一方面导热胶的导热性能可以提高冷却件与箱体侧板的热传导性能，便于将冷却件的热量传导至侧板，可提高散热效果，另一方面，导热胶的粘性可以使得冷却件和连接槽的连接更加牢固。
在一些实施例中，连接槽的至少一端设置有导向结构，以便于冷却件和侧板的装配。
本申请实施例的技术方案中，通过在连接槽的一端设置导向结构，可以便于冷却件装配于侧板。
在一些实施例中，侧板至少包括相对设置的第一侧板和第二侧板、第三侧板。第一侧板和第二侧板与冷却件连接且与第一通道连通；第三侧板与第一侧板和第二侧板均相邻设置，第三侧板设有与第二通道相连通的进水口和出水口；第一侧板、第二侧板和第三侧板的第二通道与冷却件的第一通道形成冷却回路。
本申请实施例的技术方案中，通过第一侧板、第二侧板、第三侧板内部的第二通道与 冷却件的第一通道形成冷却回路，便于冷却液流转，以实现对电池单体的降温功能，能够更大程度地减少冷却回路在电池内所占空间，并使冷却回路的结构强度可靠性更高。
第二方面，本申请还提供一种用电装置，包括上述任一实施方式中的电池，电池用于提供电能。
上述说明仅是本申请技术方案的概述，为了能够更清楚了解本申请的技术手段，而可依照说明书的内容予以实施，并且为了让本申请的上述和其它目的、特征和优点能够更明显易懂，以下特举本申请的具体实施方式。
附图说明
通过阅读对下文实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出实施方式的目的，而并不认为是对本申请的限制。而且在全部附图中，用相同的附图标号表示相同的部件。在附图中：
图1是本申请一实施方式所示的车辆的结构示意图；
图2是本申请一实施方式所示的电池的分解结构示意图；
图3是本申请一实施方式所示的箱体、冷却件相连接的结构示意图；
图4是图3中A处放大示意图；
图5是图3中的箱体的结构示意图；
图6是图5中的B处放大示意图；
图7是图2中的冷却件和电池单体的装配示意图；
图8是图7中的C处放大示意图；
图9是图7中的C处放大示意图的另一种实施方式。
1000、车辆；100、电池；110、箱体；111、容纳腔；112、连接槽；1121、导向结构；113、侧板；1131、第一侧板；1132、第二侧板；1133、第三侧板；114、进水口；115、出水口；120、电池单体；130、冷却件；140、连接组件；141、第一接头；142、第二接头；143、第三接头；150、盖体；160、第一管道；170、第二管道；200、控制器；300、马达。
具体实施方式
下面将结合附图对本申请技术方案的实施例进行详细的描述。以下实施例仅用于更加清楚地说明本申请的技术方案，因此只作为示例，而不能以此来限制本申请的保护范围。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同；本文中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请；本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。
在本申请实施例的描述中，技术术语“第一”“第二”等仅用于区别不同对象，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量、特定顺序或主次关系。在本申请实施例的描述中，“多个”的含义是两个以上，除非另有明确具体的限定。
在本文中提及“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，本文所描述的实施例可以与其它实施例相结合。
在本申请实施例的描述中，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，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
在本申请实施例的描述中，术语“多个”指的是两个以上(包括两个)，同理，“多组”指的是两组以上(包括两组)，“多片”指的是两片以上(包括两片)。
在本申请实施例的描述中，技术术语“中心”“纵向”“横向”“长度”“宽度”“厚度”“上”“下”“前”“后”“左”“右”“竖直”“水平”“顶”“底”“内”“外”“顺时针”“逆时针”“轴向”“径向”“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请实施例和简化描述，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实施例的限制。
在本申请实施例的描述中，除非另有明确的规定和限定，技术术语“安装”“相连”“连接”“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；也可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请实施例中的具体含义。
目前，从市场形势的发展来看，电池的应用越加广泛。电池不仅被应用于水力、火力、风力和太阳能电站等储能电源系统，而且还被广泛应用于电动自行车、电动摩托车、电动汽车等电动交通工具，以及军事装备和航空航天等多个领域。随着电池应用领域的不断扩大，其市场的需求量也在不断地扩增。
本发明人注意到，随着电池的充放电循环，电池单体会产生热量，为了电池单体及时散热，通常在电池内设置冷却系统以便于电池单体散热。当前电动汽车电池通常采用在电池内部设置独立水冷管的方案输送冷却液，这种方案占用空间大，且水冷管在长期振动冲击工况工作后易发生泄漏问题。
为了解决冷却系统可靠性差及占用空间大的问题，发明人研究发现，可以在电池箱体的内部为冷却系统预留通道。具体为可以将电池箱体设置为中空结构，利用电池箱体内部的 中空通道输送冷却液，以减少冷却系统的占用空间，同时利用箱体自身结构提高强度可靠性，避免受振动、冲击而泄漏。
基于以上考虑，为了解决冷却系统可靠性差及占用空间大的问题，发明人经过深入研究，设计了一种电池，通过在电池的箱体内部设置中空结构以形成通道，并使该通道连接冷却件的内部通道，以形成冷却回路，使得冷却回路占用空间减小且结构强度可靠性提高。
本申请实施例公开的电池可以但不限用于车辆、船舶或飞行器等用电装置中。可以使用具备本申请公开的电池等组成该用电装置的电源系统。
本申请实施例提供一种使用电池作为电源的用电装置，用电装置可以为但不限于手机、平板、笔记本电脑、电动玩具、电动工具、电瓶车、电动汽车、轮船、航天器等等。其中，电动玩具可以包括固定式或移动式的电动玩具，例如，游戏机、电动汽车玩具、电动轮船玩具和电动飞机玩具等等，航天器可以包括飞机、火箭、航天飞机和宇宙飞船等等。
以下实施例为了方便说明，以本申请一实施例的一种用电装置为车辆1000为例进行说明。
请参照图1，图1为本申请一些实施例提供的车辆1000的结构示意图。车辆1000可以为燃油汽车、燃气汽车或新能源汽车，新能源汽车可以是纯电动汽车、混合动力汽车或增程式汽车等。车辆1000的内部设置有电池100，电池100可以设置在车辆1000的底部或头部或尾部。电池100可以用于车辆1000的供电，例如，电池100可以作为车辆1000的操作电源。车辆1000还可以包括控制器200和马达300，控制器200用来控制电池100为马达300供电，例如，用于车辆1000的启动、导航和行驶时的工作用电需求。
在本申请一些实施例中，电池100不仅可以作为车辆1000的操作电源，还可以作为车辆1000的驱动电源，代替或部分地代替燃油或天然气为车辆1000提供驱动动力。
请参照图2，图2为本申请一实施方式展示的一种电池100，包括箱体110、电池单体120和冷却件130。箱体110设有容纳腔111。电池单体120的数量为多个，多个电池单体120沿预设方向排列设置于容纳腔111内。冷却件130设置在电池单体120沿预设方向的至少一侧，冷却件130内部设有第一通道；其中，箱体110为中空结构以在箱体110上形成第二通道，第一通道与第二通道连通。
箱体110用于为电池单体120提供容纳空间，箱体110可以采用多种结构。在一些实施例中，电池100还包括盖体150，盖体150与箱体110相互盖合，盖体150与箱体110共同限定出用于容纳电池单体120的容纳腔111。箱体110可以为一端开口的空心结构，盖体150可以为板状结构，盖体150盖合于箱体110的开口侧，以使盖体150与箱体110共同限定出容纳空间。盖体150和箱体110也可以是均为一侧开口的空心结构，盖体150的开口侧盖合于箱体110的开口侧。当然，箱体110可以是多种形状，比如，圆柱体、长方体等，本申请实施例对此不做限定。
在电池100中，电池单体120可以是多个，多个电池单体120之间可串联或并联或混联，混联是指既有串联又有并联。多个电池单体120之间可直接串联或并联或混联在一起，再将多个电池单体120构成的整体容纳于箱体110内。当然，电池100也可以是多个电池单体120先串联或并联或混联组成电池模块形式，多个电池模块再串联或并联或混联形成一个整体，并容纳于箱体110内。电池100还可以包括其他结构，例如，该电池100还可以包括汇流部件，用于实现多个电池单体120之间的电连接。
其中，每个电池单体120可以为二次电池100或一次电池100；还可以是锂硫电池100、钠离子电池100或镁离子电池100，但不局限于此。电池单体120可呈圆柱体、扁平体、长方体或其它形状等。
冷却件130内设第一通道，第一通道用于冷却液流动，以使流动的冷却液带走电池单体120所产生的热量，实现利用冷却件130对电池单体120降温的作用。冷却件130设置在电池单体120沿预设方向的至少一侧，在如图2所示的实施方式中，电池单体120大面贴合冷却件130，以使电池单体120和冷却件130的贴合面积大，便于电池单体120和冷却件130间的热量传递。
箱体110设为中空结构以在箱体110上形成第二通道，箱体110中所设置的第二通道也用于冷却液流动，第二通道与冷却件130内的第一通道连通，使得第二通道能够为第一通道提供冷却液。而且第二通道和第一通道连通以形成冷却回路，使得冷却液可以在第一通道和第二通道之间循环，以使流动的冷却液带走电池单体120所产生的热量，实现对电池单体120的降温作用。
上述方案中，通过将箱体110设为中空结构以形成第二通道，且第二通道与冷却件130内的第一通道连通，使得第一通道和第二通道形成冷却回路，实现冷却液可以在第一通道和第二通道之间循环，以对电池单体120降温。这样的设置方式，能够更大程度地减少冷却回路在电池100内所占空间，且相较于管状冷却回路，箱体110结构更坚固，利用箱体110形成的第二通道构成冷却回路的结构强度可靠性更高。
请参阅图3至图9，根据本申请的一些实施方式，可选地，第一通道和第二通道通过连接组件140可拆卸地连通。
通过将第一通道和第二通道设置为可拆卸地连通，一方面，便于电池100组装，方便箱体110、冷却件130分别成型后组装，提高电池100成型和组装效率；另一方面，还便于电池100维护、维修过程中更换箱体110或冷却件130。
在其他实施方式中，第一通道和第二通道也可以是不可拆卸的连接方式，例如焊接、热熔连接等。
请参阅图5至图9，根据本申请的一些实施方式，可选地，连接组件140包括第一接头141和第二接头142。第一接头141连接于冷却件130且与第一通道连通；第二接头142 连接于箱体110且与第二通道连通；其中，第一接头141与第二接头142可拆卸连接。
可以理解的是，第一接头141和第二接头142相互适配以实现可拆卸连接。第一接头141和第二接头142可以是卡套式管接头、扩口式管接头、扣压式胶管接头等。
第一接头141连接于冷却件130，具体的第一接头141可以直接连接于冷却件130上，当然第一接头141可以通过管道等中间连接件间接连接于冷却件130上；第二接头142与箱体110的连接方式也是如此，此处不再赘述。
通过第一接头141和第二接头142可拆卸地连通冷却件130和箱体110，以实现第一通道和第二通道可拆卸地连通，提高电池100组装效率且便于维护维修。
在其他实施方式中，连接组件140也可以是常规连接件，例如螺纹连接件、法兰连接件等。
请参阅图8和图9，根据本申请的一些实施方式，可选地，电池100包括第一管道160和/或第二管道170。第一管道160一端与第一接头141连通，另一端与第一通道连通；和/或，第二管道170，第二管道170一端与第二接头142连通，另一端与第二通道连通；其中，第一管道160和/或第二管道170为柔性管。
具体地，如图9所示，电池100包括第一管道160，第一管道160一端与第一接头141连通，另一端与第一通道连通，且第一管道160为柔性管。可选的，电池100还可以包括第四接头(图中未示出)，通过第四接头实现第一通道和第一管道160的连接，可选的第四接头和第一管道160之间可以为可拆卸连接，以便于第一管道160的更换维修。
或者，可选的，在一些实施例中，如图8和9所示，电池100包括第二管道170，第二管道170一端与第二接头142连通，另一端与第二通道连通，且第二管道170为柔性管。可选的，如图6所示，电池100还可以包括第三接头143，通过第三接头143实现第二通道和第二管道170的连接，可选的，第三接头143和第二管道170之间可以为可拆卸连接，以便于第二管道170的更换维修。
当然，在一些实施例中，如图9所示，电池100也可以包括第一管道160和第二管道170，其中，第一管道160一端与第一接头141连通，另一端与第一通道连通，第二管道170一端与第二接头142连通，另一端与第二通道连通，且第一管道160和第二管道170中至少一个为柔性管。
柔性管可以采用柔性材料制成，例如橡胶材料、塑料软管等。
在如图3至图8的实施方式中，电池100包括第一管道160，第一管道160一端与第一接头141连通，另一端与第一通道连通，且第一管道160为柔性管。
通过在冷却件130和箱体110之间设置柔性管，利用柔性管的柔性可变形特点实现便于装配、吸收装配公差以及吸收振动冲击工况的能量的功能，提高可制造性和机构可靠性。
请参阅图5和图6，根据本申请的一些实施方式，可选地，箱体110包括多个侧板113， 多个侧板113围合形成容纳腔111，侧板113内形成第二通道，冷却件130可拆卸地连接于侧板113的内侧。
在一些实施方式中，箱体110还可以包括底板，底板、侧板113及盖体150共同围合成容纳腔111，以用于放置电池单体120、冷却件130等。
通过将箱体110和冷却件130可拆卸地连接于侧板113的内侧，一方面能够使得冷却件130在容纳腔111内的位置固定，避免在电池100使用过程中冷却板移位，另一方面，能够便于箱体110和冷却板组装拆卸，便于提高电池100装配效率。
请参阅图6，根据本申请的一些实施方式，可选地，侧板113的内侧设有连接槽112，冷却件130靠近侧板113的端部容纳于连接槽112中，以实现冷却件130与侧板113的内侧可拆卸连接。
连接槽112设置于侧板113的内侧，其可以是通过内凹于侧板113的内侧面而形成的凹槽，也可以是通过外凸于侧板113的内侧面而在相连两个凸起之间形成的凹槽，在如图5和图6所示的实施方式中，连接槽112外凸于侧板113的内侧面，相较于内凹于侧板113的设置方式，更便于加工。
通过在侧板113的内侧设置连接槽112，且冷却件130的端部容纳于连接槽112中，能够限制冷却板的位置避免冷却板相对侧板113移动，且能够实现冷却件130和侧板113可拆卸连接。
根据本申请的一些实施方式，可选地，连接槽112和冷却件130之间填充有导热胶。
导热胶具有卓越的抗冷热交变性能、耐老化性能和电绝缘性能，并具有优异的防潮、抗震、耐电晕、抗漏电性能和耐化学介质性能。导热胶可持续使用在-60～280℃且保持性能、不溶胀，并且对大多数金属和非金属材料具有良好的粘接性。
通过在连接槽112和冷却件130之间填充导热胶，一方面导热胶的导热性能可以提高冷却件130与箱体110侧板113的热传导性能，便于将冷却件130的热量传导至侧板113，可提高散热效果，另一方面，导热胶的粘性可以使得冷却件130和连接槽112的连接更加牢固。
请参阅图6，根据本申请的一些实施方式，可选地，连接槽112的至少一端设置有导向结构1121，以便于冷却件130和侧板113的装配。
为了便于冷却件130的装配，在如图6所示的实施方式中，导向结构1121位于连接槽112的顶端。在其他实施方式中，导向结构1121也可以设置在连接槽112的另一端，冷却件130从另一端向顶端插入以装配于连接槽112。在其他实施方式中，也可以在连接槽112的两端均设置导向结构1121。
在如图6所示的实施方式中，导向结构1121的宽度由与连接槽112连接的一端向另一端逐渐增大。即导向结构1121采用漏斗形结构设计，导向结构1121的开口宽度较大，导向结构1121的宽度由开口端向连接槽112的另一端宽度渐变减小。
通过在连接槽112的一端设置导向结构1121，可以便于冷却件130装配于侧板113。
请参阅图5和图6，根据本申请的一些实施方式，可选地，侧板113至少包括相对设置的第一侧板1131和第二侧板1132、第三侧板1133。第一侧板1131和第二侧板1132与冷却件130连接且与第一通道连通；第三侧板1133均与第一侧板1131和第二侧板1132相邻设置，第三侧板1133设有与第二通道相连通的进水口114和出水口115；第一侧板1131、第二侧板1132和第三侧板1133的第二通道与冷却件130的第一通道形成冷却回路。
第一侧板1131、第二侧板1132、第三侧板1133内部均为中空结构且共同形成第二通道。当电池100处于冷却状态时，冷却液由第三侧板1133的进水口114进入第二通道，且沿着第二通道进入第一侧板1131和第二侧板1132一者中的第二通道内，并经过连接组件140进入冷却件130的第一通道，经过冷却件130后，由位于冷却件130另一端的连接组件140进入第一侧板1131和第二侧板1132另一者中的第二通道内，后冷却液沿着第二通道流至第三侧板1133，并由出水口115排出冷却回路，完成冷却液流动。可以理解的是，冷却液可以是冷却水，也可以是其他可用于冷却的液体等。
通过第一侧板1131、第二侧板1132、第三侧板1133内部的第二通道与冷却件130的第一通道形成冷却回路，便于冷却液流转，以实现对电池单体120的连续降温功能，能够更大程度地减少冷却回路在电池100内所占空间，并使冷却回路的结构强度可靠性更高。
在其他实施方式中，侧板113可以包括第一侧板1131和第二侧板1132，第一侧板1131和第二侧板1132相对地设置，且第一侧板1131和第二侧板1132分别连接冷却件130的两端。第一侧板1131和第二侧板1132均为中空结构并形成第二通道，且第一侧板1131、第二侧板1132的第二通道均与冷却件130的第一通道连通，并形成冷却回路。第一侧板1131和第二侧板1132中一者设置进水口114，且第一侧板1131和第二侧板1132中另一者设置出水口115。
当冷却液流动时，从第一侧板1131和第二侧板1132一者中的进水口114进入第二通道，通过连接组件140进入冷却件130的第一通道，并由冷却件130的另一端进入第一侧板1131和第二侧板1132中另一者的出水口115流出，完成冷却液的流动。
根据本申请的一些实施方式，请参阅图2至图8，本申请提供一种电池100，包括箱体110、设置于箱体110内部的电池单体120和冷却件130。冷却件130可拆卸地连接于箱体110的侧板113的内侧。箱体110为中空结构并在内部形成第二通道，冷却件130内设第一通道，且第一通道与第二通道可拆卸地连通。第一通道和第二通道相连通以形成冷却回路，便于冷却液流转，以实现对电池单体120的降温功能。这样的设置方式，能够更大程度地减少冷却回路在电池100内所占空间，且相较于管状冷却回路，箱体110结构更坚固，利用箱体110形成第二通道以使冷却回路的结构强度可靠性更高。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可 以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围，其均应涵盖在本申请的权利要求和说明书的范围当中。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 (15)

  1. 一种电池，包括：
    箱体，所述箱体内设有容纳腔；
    电池单体，所述电池单体的数量为多个，多个所述电池单体沿预设方向排列设置于所述容纳腔内；
    冷却件，所述冷却件设置在所述电池单体沿所述预设方向的至少一侧，所述冷却件内部设有第一通道；
    其中，所述箱体为中空结构以在所述箱体上形成第二通道，所述第一通道与所述第二通道连通。
  2. 根据权利要求1所述的电池，其中，所述第一通道和所述第二通道通过连接组件可拆卸地连通。
  3. 根据权利要求2所述的电池，其中，所述连接组件包括：
    第一接头，所述第一接头连接于所述冷却件且与所述第一通道连通；
    第二接头，所述第二接头连接于所述箱体且与所述第二通道连通；
    其中，所述第一接头与所述第二接头可拆卸连接。
  4. 根据权利要求3所述的电池，其中，所述电池包括第一管道，所述第一管道一端与所述第一接头连通，另一端与所述第一通道连通；所述第一管道为柔性管。
  5. 根据权利要求4所述的电池，其中，所述电池还包括第四接头，所述第四接头可拆卸地连接于所述第一管道靠近所述第一通道的一端，以实现所述第一通道与所述第一管道的连接。
  6. 根据权利要求3-5任意一项所述的电池，其中，所述连接组件包括第二管道，所述第二管道一端与所述第二接头连通，另一端与所述第二通道连通；所述第二管道为柔性管。
  7. 根据权利要求6所述的电池，其中，所述电池还包括第三接头，所述第三接头可拆卸地连接于所述第二管道靠近所述第二通道的一端，以实现所述第二通道与所述第二管道的连接。
  8. 根据权利要求1-7任意一项所述的电池，其中，所述箱体包括多个侧板，多个所述侧板围合形成所述容纳腔，所述侧板内形成所述第二通道，所述冷却件可拆卸地连接于所述侧板的内侧。
  9. 根据权利要求8所述的电池，其中，所述侧板的内侧设有连接槽，所述冷却件靠近所述侧板的端部容纳于所述连接槽中，以实现所述冷却件与所述侧板的内侧可拆卸连接。
  10. 根据权利要求9所述的电池，其中，所述连接槽和所述冷却件之间填充有导热胶。
  11. 根据权利要求9或10所述的电池，其中，所述连接槽的至少一端设置有导向结构， 以便于所述冷却件和所述侧板的装配。
  12. 根据权利要求12所述的电池，其中，所述导向结构的宽度由与所述连接槽连接的一端向另一端逐渐增大。
  13. 根据权利要求8-12任意一项所述的电池，其中，所述侧板包括相对设置的第一侧板和第二侧板，所述第一侧板和所述第二侧板与所述冷却件连接且与所述第一通道连通；
    其中，所述第一侧板及所述第二侧板的第二通道与所述冷却件的第一通道形成冷却回路。
  14. 根据权利要求13所述的电池，其中，所述侧板还包括第三侧板，所述第三侧板与所述第一侧板和所述第二侧板均相邻设置，所述第三侧板设有与所述第二通道相连通的进水口和出水口；
    其中，所述第一侧边、所述第二侧边和所述第三侧板的第二通道与所述冷却件的第一通道形成冷却回路。
  15. 一种用电装置，包括如权利要求1-14任意一项所述的电池，所述电池用于提供电能。
PCT/CN2022/137959 2022-02-25 2022-12-09 电池、用电装置 WO2023160118A1 (zh)

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