WO2025055604A1 - 液冷装置、连通组件及电池包 - Google Patents

液冷装置、连通组件及电池包 Download PDF

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Publication number
WO2025055604A1
WO2025055604A1 PCT/CN2024/110404 CN2024110404W WO2025055604A1 WO 2025055604 A1 WO2025055604 A1 WO 2025055604A1 CN 2024110404 W CN2024110404 W CN 2024110404W WO 2025055604 A1 WO2025055604 A1 WO 2025055604A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid cooling
protrusion
cooling device
cooling plate
side wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/110404
Other languages
English (en)
French (fr)
Inventor
邱文聪
陈智伟
陈朝海
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eve Energy Co Ltd
Original Assignee
Eve Energy Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202322480069.6U external-priority patent/CN220895618U/zh
Priority claimed from CN202322485981.0U external-priority patent/CN220895621U/zh
Priority claimed from CN202322485946.9U external-priority patent/CN220895620U/zh
Priority claimed from CN202311176383.3A external-priority patent/CN117613446A/zh
Application filed by Eve Energy Co Ltd filed Critical Eve Energy Co Ltd
Priority to EP24864327.2A priority Critical patent/EP4611122A4/en
Publication of WO2025055604A1 publication Critical patent/WO2025055604A1/zh
Priority to US19/226,070 priority patent/US20250290712A1/en
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/12Elements constructed in the shape of a hollow panel, e.g. with channels
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/61Types of temperature control
    • H01M10/613Cooling or keeping cold
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/08Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/64Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/643Cylindrical cells
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/653Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/655Solid structures for heat exchange or heat conduction
    • H01M10/6556Solid parts with flow channel passages or pipes for heat exchange
    • H01M10/6557Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/656Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567Liquids
    • H01M10/6568Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/213Racks, 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
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • H01M50/291Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0028Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for cooling heat generating elements, e.g. for cooling electronic components or electric devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2210/00Heat exchange conduits
    • F28F2210/10Particular layout, e.g. for uniform temperature distribution
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2230/00Sealing means
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Definitions

  • the present application relates to the field of battery technology, and in particular to a liquid cooling device and a battery pack.
  • a battery pack is provided with a battery cell and a liquid cooling device, and the cooling device is configured to cool the battery cell.
  • liquid cooling device is made of relatively soft materials, it is easy to cause flow channel blockage when deformed by external force.
  • the present application provides a liquid cooling device.
  • the liquid cooling device is used to cool the battery cells in the battery pack, and the liquid cooling device includes:
  • a liquid cooling plate comprising a cooling channel
  • Part of the side walls of the cooling channel are provided with protrusions, and when the outer side of the liquid cooling plate is not squeezed, the protrusions are spaced apart from the opposite side walls; when the outer side of the liquid cooling plate is squeezed, the protrusions abut against the opposite side walls to at least separate the cooling channel into a first channel and a second channel.
  • the present application also provides a connecting component, which includes a first connecting piece and a second connecting piece.
  • the first connecting piece includes a joint and a limiting sleeve.
  • the joint is interference fit with the second connecting piece.
  • the limiting sleeve is sleeved on the outer sides of the corresponding joint and the second connecting piece.
  • the present application also provides a battery pack.
  • the battery pack includes a plurality of battery cells and a liquid cooling device, wherein the liquid cooling device is used to cool the battery cells, and the liquid cooling device includes:
  • a liquid cooling plate comprising a cooling channel
  • Part of the side walls of the cooling channel are provided with protrusions, and when the outer side of the liquid cooling plate is not squeezed, the protrusions are spaced apart from the opposite side walls; when the outer side of the liquid cooling plate is squeezed, the protrusions abut against the opposite side walls to at least separate the cooling channel into a first channel and a second channel.
  • the liquid cooling device provided in the present application is provided with a protrusion on the side wall of the cooling channel.
  • the protrusion is provided between the side walls of the cooling channel, so that the protrusion will be supported between the side walls, thereby preventing the rest of the cooling channel from continuing to be blocked, thereby improving the technical problem in the related art that the liquid cooling plate is easily blocked when deformed by external force.
  • the connecting component provided in the present application can perform secondary fixing and sealing of the joint and the second connecting piece by interference fitting the joint of the first connecting piece with the second connecting piece, and sleeve the limiting sleeve of the first connecting piece on the corresponding joint and the outer side of the second connecting piece, thereby improving the airtight reliability of the two and reducing the risk of cooling medium leakage when two adjacent liquid cooling plates are connected.
  • the battery pack provided in the present application is provided with a protrusion on the side wall of the cooling channel of the liquid cooling device.
  • the protrusion is provided between the side walls of the cooling channel, so that the protrusion will be supported between the side walls, thereby preventing the rest of the cooling channel from continuing to be blocked, thereby improving the technical problem in the related art that the liquid cooling plate is easily blocked when deformed by external force.
  • FIG1 is a schematic diagram of the structure of a liquid cooling device in some implementations of the present application.
  • FIG2 is a schematic top view of a liquid cooling device in some implementations of the present application.
  • FIG3 is a side view schematic diagram of a liquid cooling device in some implementations of the present application.
  • FIG4 is an enlarged schematic diagram of point B in FIG2;
  • FIG5 is a schematic diagram of a matching structure when no connecting component is provided between the first liquid cooling plate and the second liquid cooling plate in some implementations of the present application;
  • FIG6 is a schematic diagram of the structure of a first liquid cooling plate in some implementations of the present application.
  • FIG7 is a schematic side view of the first liquid cooling plate in FIG6 ;
  • FIG8 is an enlarged schematic diagram of point C in FIG1;
  • FIG9 is an enlarged schematic diagram of point D in FIG3 ;
  • FIG10 is a schematic diagram of the structure of a joint in some implementations of the present application.
  • FIG11 is a schematic diagram of the structure of a position limiting sleeve in some implementations of the present application.
  • FIG12 is a schematic structural diagram of a first sub-connecting member in some implementations of the present application.
  • FIG13 is a schematic diagram of the structure of a second sub-connecting member in some implementations of the present application.
  • FIG15 is an enlarged schematic diagram of point A in FIG14;
  • FIG. 16 is a schematic diagram of the structure of a block in some implementations of the present application.
  • Liquid cooling device 200 liquid cooling plate 10; matching portion 100; first liquid cooling plate 101; second liquid cooling plate 102; first matching portion 103; second matching portion 104; side wall 20; first side wall 105; second side wall 106; limit strip 107; installation cavity 108; communication port 109; protrusion 110; first protrusion 111; second protrusion 112; cooling channel 120; first channel 121; second channel 122; spacer 130; joint 201; limit Sleeve 202; first sub-connecting piece 203; second sub-connecting piece 204; sealing ring 205; connecting assembly 210; first connecting piece 211; second connecting piece 212; cavity 1001; first end 2011; second end 2012; annular groove 2013; notch 2021; first section 2031; second section 2032; third section 2033; battery pack 300; block 301; confluence channel 302; opening 303; first direction X; second direction Y.
  • connection should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements.
  • connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements.
  • a first feature being “above” or “below” a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them.
  • a first feature being “above”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, and the first feature having a higher horizontal height than the second feature.
  • a first feature being “below”, “below” and “below” a second feature includes the first feature being directly below and obliquely below the second feature, and the first feature having a lower horizontal height than the second feature.
  • the terms “upper”, “lower”, “left”, “right”, “front”, “rear” and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present application.
  • the terms “first” and “second” are used to distinguish in the description and have no special meaning.
  • Fig. 1 is a schematic diagram of the structure of a liquid cooling device in some implementations of the present application.
  • Fig. 2 is a schematic diagram of a top view of a liquid cooling device in some implementations of the present application.
  • Fig. 3 is a schematic diagram of a side view of a liquid cooling device in some implementations of the present application.
  • an embodiment of the present application provides a liquid cooling device 200 for cooling a plurality of battery cells (not shown in the figure) in a battery pack 300 .
  • the liquid cooling device 200 includes a plurality of liquid cooling plates 10 .
  • the liquid cooling plate 10 includes a plurality of first liquid cooling plates 101 and a plurality of second liquid cooling plates 102.
  • the plurality of first liquid cooling plates 101 and the plurality of second liquid cooling plates 102 are arranged alternately along the first direction X, and the first liquid cooling plate 101 and the adjacent second liquid cooling plates 102 enclose a plurality of mounting cavities 108 in the second direction Y, and a seal is provided between two adjacent mounting cavities 108.
  • Each battery cell is installed in a corresponding mounting cavity 108, that is, the liquid cooling plate 10 abuts against the battery cell.
  • first liquid cooling plate 101 and the second liquid cooling plate 102 can directly abut against the battery cell, and in other implementations, the first liquid cooling plate 101 and the second liquid cooling plate 102 can also abut against the battery cell through thermal conductive glue, that is, thermal conductive glue is provided between the first liquid cooling plate 101 and the second liquid cooling plate 102 and the battery cell.
  • first liquid cooling plate 101 and the adjacent second liquid cooling plate 102 are connected through a connecting component 210.
  • Multiple first liquid cooling plates 101, multiple second liquid cooling plates 102 and multiple connecting components 210 together constitute a cooling system located on the battery pack 300 side, which has a flow channel for the flow of cooling medium and corresponding input ports and output ports. It can be understood that the cooling system can be connected to an external conveying device through the input port and the output port to form a complete cooling circulation system. It should be noted that the first direction X and the second direction Y intersect.
  • each battery cell is located in a corresponding mounting cavity 108 and two adjacent mounting cavities 108 are insulated from each other, when a battery cell in a mounting cavity 108 experiences thermal runaway, it will be confined in the corresponding mounting cavity 108 and will not spread heat, so adjacent battery cells will not be affected. It is understandable that the above arrangement improves the technical problem in the related art that when a battery cell experiences thermal runaway, adjacent battery cells will be affected.
  • FIG. 4 is an enlarged schematic diagram of point B in FIG. 2.
  • FIG. 5 is a schematic diagram of the matching structure when no connecting component is provided between the first liquid cooling plate and the second liquid cooling plate in some implementations of the present application.
  • FIG. 6 is a schematic diagram of the structure of the first liquid cooling plate in some implementations of the present application.
  • FIG. 7 is a schematic side view of the first liquid cooling plate in FIG. 6.
  • the first liquid cooling plate 101 and the second liquid cooling plate 102 are both formed with a plurality of alternately arranged matching portions 100 in the second direction Y, and the matching portions 100 are curved.
  • the matching parts 100 at corresponding positions on the first liquid cooling plate 101 and the matching parts 100 at corresponding positions on the second liquid cooling plate 102 form a mounting cavity 108.
  • the plurality of matching parts 100 include a plurality of first matching parts 103 and a plurality of second matching parts 104 (as shown in FIG5 ).
  • first matching portions 103 and a plurality of second matching portions 104 are alternately arranged along the second direction Y.
  • first matching portions 103 of the first liquid cooling plate 101 and the second matching portions 104 of the second liquid cooling plate 102 enclose an installation cavity 108 .
  • the combination of the first liquid cooling plate 101 and the second liquid cooling plate 102 is the minimum circulation unit of the liquid cooling device 200 in the present application (as shown in FIG. 4 ), and the liquid cooling device 200 in the present application is composed of a plurality of circulation units.
  • the opening directions of the adjacent first mating parts 103 and second mating parts 104 are the same (not shown), and the opening directions of the first mating parts 103 and second mating parts 104 of the first liquid cooling plate 101 are opposite to the opening directions of the first mating parts 103 and second mating parts 104 of the second liquid cooling plate 102.
  • the first mating parts 103 of the first liquid cooling plate 101 and the second mating parts 104 of the second liquid cooling plate 102 cooperate to form the installation cavity 108
  • the second mating parts 104 of the first liquid cooling plate 101 and the first mating parts 103 of the second liquid cooling plate 102 cooperate to form the installation cavity 108.
  • the installation cavities 108 in each circulation unit form a row, and the two adjacent rows of installation cavities 108 are aligned in the first direction X, so that the liquid cooling device 200 of the present application can arrange the square battery cells well.
  • the opening directions of the adjacent first mating parts 103 and second mating parts 104 are opposite.
  • the first mating part 103 of the first liquid cooling plate 101 and the second mating part 104 of the second liquid cooling plate 102 cooperate to form an installation cavity 108
  • the first mating part 103 of the first liquid cooling plate 101 and the first mating part 103 of the second liquid cooling plate 102 cooperate to form an installation cavity 108.
  • the first liquid cooling plate 101 of the previous circulation unit and the second liquid cooling plate 102 of the next circulation unit can also form an installation cavity 108 between each other.
  • the installation cavities 108 in each circulation unit form a row, and the adjacent two rows of installation cavities 108 are staggered in the first direction X. It can be understood that the staggered arrangement can increase the number of battery cells of cylindrical or similar shapes that the liquid cooling device 200 can accommodate.
  • each installation cavity 108 the first end of each first mating portion 103 is fixedly connected to the first end of the corresponding second mating portion 104 by adhesive, and the second end of the first mating portion 103 is fixedly connected to the second end of the corresponding second mating portion 104 by adhesive.
  • first end and second section are only for better description, and the liquid cooling plate 10 is a whole.
  • the second end of the previous first mating portion 103 and the first end of the next first mating portion 103 are components of the second mating portion 104.
  • the contacting parts of the first liquid cooling plate 101 and the second liquid cooling plate 102 are fixed by adhesive, so that the two adjacent installation cavities 108 are sealed with each other, thereby preventing heat spread when the battery cell is thermally runaway.
  • each mounting cavity 108 matches the shape of the corresponding battery cell. If the shell of the battery cell is cylindrical, the first matching portion 103 and the second matching portion 104 surrounding the mounting cavity 108 are configured to be in an arc shape that matches the shell of the battery cell. In order to improve the stability of the battery cell, the first matching portion 103 and the second matching portion 104 wrap the outer side of the battery cell.
  • the side wall of the liquid cooling plate 10 facing the battery cell is provided with a limit bar 107.
  • the limit bar 107 can be bonded to the liquid cooling plate 10. It can be understood that the limit bar 107 can improve the rigidity of the liquid cooling device 200, and can ensure that there is space between the battery cell and the liquid cooling plate 10 to accommodate the structural glue, and at the same time, it can also play a role in limiting the battery cell.
  • Fig. 8 is an enlarged schematic diagram of point C in Fig. 1
  • Fig. 9 is an enlarged schematic diagram of point D in Fig. 3.
  • Fig. 8 and Fig. 9 show that two adjacent liquid cooling plates of the present application are connected through a connecting component 210.
  • Fig. 10 is a structural schematic diagram of a joint in some implementations of the present application.
  • Fig. 11 is a structural schematic diagram of a limiting sleeve in some implementations of the present application.
  • Fig. 12 is a structural schematic diagram of a first sub-connecting member in some implementations of the present application.
  • Fig. 13 is a structural schematic diagram of a second sub-connecting member in some implementations of the present application.
  • a cooling channel is provided in each liquid cooling plate 10.
  • a connecting port 109 connected to the cooling channel is provided on the liquid cooling plate 10.
  • a connecting component 210 is used to connect two adjacent liquid cooling plates 10.
  • the connecting component 210 includes two first connecting pieces 211 and a second connecting piece 212.
  • the first connecting piece 211 includes a joint 201 and a limiting sleeve 202.
  • the two first connecting pieces 211 are located between two adjacent liquid cooling plates 10.
  • the first end 2011 of the joint 201 of each first connecting piece 211 is connected to the connecting port 109 of the corresponding liquid cooling plate 10.
  • the second end 2012 of the joint 201 of each first connecting piece 211 is connected to the second connecting piece 212 and the two are interference fit.
  • the limiting sleeve 202 is sleeved on the outer side of the corresponding joint 201 and the second connecting piece 212.
  • an interference fit is set between the joint 201 and the second connecting piece 212, and a limiting sleeve 202 is sleeved on the outside of the joint 201 and the second connecting piece 212, that is, a secondary fixing and sealing joint 201 and the second connecting piece 212, which improves the airtight reliability of the two, thereby preventing the technical problem of cooling medium leakage that is easy to occur when two adjacent liquid cooling plates 10 are connected.
  • the first connecting piece 211 further includes a sealing ring 205.
  • the sealing ring 205 is located between the second end 2012 of the connector 201 and the second connecting piece 212, and the second connecting piece 212 and the connector 201 are interference-fitted through the sealing ring 205. It can be understood that by providing the sealing ring 205 to make the second connecting piece 212 and the connector 201 interference-fitted, it is possible to ensure good sealing when the two are fixed.
  • annular groove 2013 is provided on the side wall of the second connecting piece 212 and/or the side wall of the joint 201, and part of the sealing ring 205 is located in the annular groove 2013. It can be understood that the sealing ring 205 should protrude from the annular groove 2013 to achieve an interference fit between the second connecting piece 212 and the joint 201 and ensure good sealing performance. At the same time, the provision of the annular groove 2013 can also facilitate the connection between the second connecting piece 212 and the joint 201, thereby improving the convenience of assembly.
  • the number of annular grooves 2013 should be greater than or equal to the number of sealing rings 205. It can be understood that when the number of annular grooves 2013 is greater than the number of sealing rings 205, the extra annular grooves 2013 can be used as spares. When the sealing ring 205 falls off from the corresponding annular groove 2013, it can continue to be installed in the spare annular groove 2013, thereby making the second connecting piece 212 and the joint 201 have good sealing performance, while reducing the difficulty of assembly of the two.
  • the connector 201 is sleeved on the outside of the second connecting piece 212, the outside of the connector 201 is provided with an external thread, the limiting sleeve 202 is provided with an internal thread, and the limiting sleeve 202 is threadedly connected to the connector 201. It can be understood that when the second connecting piece 212 and the connector 201 are connected, because the two are connected in an interference fit manner, the outer diameter of the connector 201 will increase.
  • the limiting sleeve 202 can be sleeved on the part of the second connecting piece 212 or the connector 201 that is not interference fit, and after the interference fit between the second connecting piece 212 and the connector 201 is completed, the limiting sleeve 202 is sleeved on the outside of the connector 201.
  • the outer diameter of the second end 2012 of the connector 201 is set to be smaller than the inner diameter of the second connecting piece 212, and the outer diameter of the second end 2012 of the connector 201 gradually increases in a direction away from the second connecting piece 212.
  • the second connecting piece 212 can also be sleeved on the outside of the connector 201.
  • an external thread can be set on the outside of the second connecting piece 212, and the outer diameter of the second connecting piece 212 can also be set to gradually increase in the direction away from the connector 201.
  • the second connecting member 212 includes a first sub-connecting member 203 and a second sub-connecting member 204, the first sub-connecting member 203 is used to connect between two adjacent liquid cooling plates 10, and the second sub-connecting member 204 is used to communicate with the outermost liquid cooling plate 10 to serve as the input/output end of the liquid cooling device 200.
  • the first sub-connecting member 203 includes two first sections 2031, two second sections 2032 and a third section 2033.
  • the two first sections 2031 are arranged opposite to each other, each second section 2032 is connected to the corresponding first section 2031 in a bending manner, and the two second sections 2032 are connected through the third section 2033.
  • the distance between the ends of the two second sections 2032 close to the first section 2031 is smaller than the distance between the ends of the two second sections 2032 close to the third section 2033.
  • the above configuration enables the first sub-connecting member 203 to have sufficient deformation margin.
  • the length of the first sub-connecting member 203 in the corresponding direction may increase or decrease accordingly.
  • the first end 2011 of the connector 201 is connected to the communication port 109 by welding, and it is understandable that a seal is provided between the two.
  • Fig. 14 is a schematic diagram of the cross-sectional structure of a liquid cooling plate in some implementations of the present application.
  • Fig. 15 is an enlarged schematic diagram of point A in Fig. 14.
  • Fig. 16 is a schematic diagram of the structure of a block in some implementations of the present application.
  • each liquid cooling plate 10 includes a cavity 1001, and a plurality of spacers 130 are disposed in the cavity 1001.
  • the plurality of spacers 130 and the cavity wall of the cavity 1001 enclose a plurality of cooling channels 120, such as two ends of the spacer 130 are respectively connected to two opposite cavity walls of the cavity 1001 to divide the cavity 1001 into a plurality of cooling channels 120.
  • the cavity 1001 is divided into a plurality of cooling channels 120 by the spacers 130, so that when the liquid cooling plate 10 is squeezed, the spacers 130 at the corresponding cooling channels 120 will serve as a supporting structure to ensure the unobstructed flow of the cooling channels 120.
  • the side wall 20 of the cooling channel 120 is provided with a protrusion 110.
  • the protrusion 110 abuts against the opposite side wall 20 to at least separate the cooling channel 120 into a first channel 121 and a second channel 122. It can be understood that the protrusion 110 at least divides the cooling channel 120 into two smaller channels. In some implementations, depending on the shape and position of the protrusion 110, the protrusion 110 divides the cooling channel 120 into three or more channels. In some implementations, depending on the shape and position of the protrusion 110, the shape of the channel may also be different.
  • the protrusion 110 includes a first protrusion 111
  • the side wall 20 of the cooling channel 120 includes a first side wall 105 and a second side wall 106 that are arranged opposite to each other.
  • the first side wall 105 is provided with a first protrusion 111.
  • the first protrusion 111 is spaced from the opposite side wall.
  • the first protrusion 111 at least separates the cooling channel 120 into a first channel 121 and a second channel 122.
  • the protrusion 110, the spacer 130, and the liquid cooling plate 10 can be integrally formed.
  • the protrusion 110 further includes a second protrusion 112, which is disposed on the second side wall 106.
  • the position of the second protrusion 112 corresponds to the position of the first protrusion 111, and when the outer side of the liquid cooling plate 10 is not squeezed, the first protrusion 111 is spaced from the second protrusion 112.
  • the first protrusion 111 abuts against the second protrusion 112 to separate the cooling channel 120 into at least the first channel 121 and the second channel 122.
  • the second side wall 106 is provided with a second protrusion 112, the first protrusion 111 and the second protrusion 112 are alternately arranged, the first protrusion 111 is opposite to and spaced from a portion of the second side wall 106 where the second protrusion 112 is not arranged, and the second protrusion 112 is opposite to and spaced from a portion of the first side wall 105 where the first protrusion 111 is not arranged, and when the outer side of the liquid cooling plate 10 is squeezed, the first protrusion 111 abuts against the portion of the second side wall 106 where the second protrusion 112 is not arranged, and the second protrusion 112 abuts against the portion of the first side wall 105 where the first protrusion 111 is not arranged.
  • the thickness of the portion of the protrusion 110 corresponding to the middle portion of the side wall 20 is greater than the thickness of the portion of the protrusion 110 corresponding to the side portion of the side wall 20.
  • the protrusion 110 is arc-shaped or rectangular, it can be understood that the arc-shaped or rectangular refers to the cross-sectional shape of the protrusion 110 (as shown in FIG. 14 ), and the extended shape of the protrusion 110 and the spacer 130 is the same as the shape of the liquid cooling plate 10.
  • the distance between the first protrusion 111 and the second protrusion 112 in the cooling channel 120 at a lower position in a natural state (when not squeezed) is smaller than the distance between the first protrusion 111 and the second protrusion 112 in the cooling channel 120 at a higher position in a natural state.
  • the distance between the first protrusion 111 and the second protrusion 112 in the cooling channel 120 at a lower position in a natural state (when not squeezed) is larger than the distance between the first protrusion 111 and the second protrusion 112 in the cooling channel 120 at a higher position in a natural state. It can be understood that the above-mentioned setting can speed up the flow rate of the cooling medium in the corresponding cooling channel 120, and use the cooling medium to provide support for the corresponding cooling channel 120 as needed to resist external squeezing.
  • any liquid cooling plate 10 in any liquid cooling plate 10, multiple cooling channels 120 are connected to the corresponding connecting ports 109 to converge at the connecting ports 109, and both ends of the liquid cooling plate 10 are sleeved with a block 301.
  • the side wall of the liquid cooling plate 10 facing the block 301 is provided with an opening, and the block 301 is provided with a converging channel 302 so that the cooling channels 120 in the liquid cooling plate 10 can also converge through the block 301.
  • the block 301 is provided with an opening 303, and the shape of the opening 303 matches the shape of the joint 201 to prevent the joint 201 from obstructing the installation of the block 301.
  • the embodiment of the present application provides a battery pack 300 , which includes a liquid cooling device 200 .
  • the battery pack 300 includes a plurality of battery cells and a liquid cooling device 200.
  • the liquid cooling device 200 is used to cool the plurality of battery cells in the battery pack 300.
  • the liquid cooling device 200 includes a plurality of liquid cooling plates 10 and a plurality of connecting components 210.
  • the liquid cooling plate 10 includes a plurality of first liquid cooling plates 101 and a plurality of second liquid cooling plates 102.
  • the plurality of first liquid cooling plates 101 and the plurality of second liquid cooling plates 102 are arranged alternately along the first direction X, and the first liquid cooling plate 101 and the adjacent second liquid cooling plate 102 are surrounded by a plurality of mounting cavities 108 in the second direction Y, and a seal is arranged between the two adjacent mounting cavities 108.
  • Each battery cell is installed in the corresponding mounting cavity 108.
  • the first liquid cooling plate 101 and the adjacent second liquid cooling plate 102 are connected through a connecting component 210.
  • the plurality of first liquid cooling plates 101, the plurality of second liquid cooling plates 102 and the plurality of connecting components 210 together constitute a cooling system located on the battery pack 300 side, which has a flow channel for the flow of cooling medium and corresponding input and output ports. It can be understood that the cooling system can be connected to an external conveying device through the input and output ports to form a complete cooling circulation system. It should be noted that the first direction X and the second direction Y intersect.
  • each battery cell is located in a corresponding mounting cavity 108 and two adjacent mounting cavities 108 are insulated from each other, when a battery cell in a mounting cavity 108 experiences thermal runaway, it will be confined in the corresponding mounting cavity 108 and will not spread heat, so adjacent battery cells will not be affected. It is understandable that the above arrangement improves the technical problem in the related art that when a battery cell experiences thermal runaway, adjacent battery cells will be affected.

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Abstract

本申请提供一种液冷装置、连通组件及电池包,通过在冷却流道的侧壁设置凸起,当液冷板的外侧被挤压时,冷却流道侧壁之间的凸起将支撑于侧壁之间,从而防止该冷却流道其余部分继续发生堵塞。

Description

液冷装置、连通组件及电池包
本申请要求在2023年09月12日提交中国专利局、申请号为202322480069.6、202311176383.3、202322485981.0、202322485946.9的中国专利申请的优先权,以上申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及电池技术领域,具体涉及一种液冷装置及电池包。
背景技术
相关技术中,电池包中设置有电芯和液冷装置,冷却装置设置为对电芯进行冷却。
发明概述
然而,由于液冷装置采用的都是较软的材料,在受外力变形时容易导致流道阻塞。
本申请提供了一种液冷装置。所述液冷装置用于冷却电池包中的电芯,所述液冷装置包括:
液冷板,所述液冷板包括冷却流道;
其中,所述冷却流道的部分侧壁设有凸起,当所述液冷板的外侧未被挤压时,所述凸起与相对的侧壁间隔;当所述液冷板的外侧被挤压时,所述凸起抵接相对的侧壁以至少将所述冷却流道分隔为第一流道和第二流道。
本申请还提供一种连通组件,所述连通组件包括第一连通件和第二连通件,所述第一连通件包括接头和限位套管,所述接头与所述第二连通件过盈配合,所述限位套管套设于对应的所述接头和所述第二连通件的外侧。
本申请还提供一种电池包。所述电池包包括多个电芯以及液冷装置,所述液冷装置用于冷却所述电芯,所述液冷装置包括:
液冷板,所述液冷板包括冷却流道;
其中,所述冷却流道的部分侧壁设有凸起,当所述液冷板的外侧未被挤压时,所述凸起与相对的侧壁间隔;当所述液冷板的外侧被挤压时,所述凸起抵接相对的侧壁以至少将所述冷却流道分隔为第一流道和第二流道。
有益效果
本申请提供的液冷装置通过在冷却流道的侧壁设置凸起,当液冷板的外侧被挤压时,由于冷却流道侧壁之间设置有凸起,从而凸起将支撑于侧壁之间,从而防止该冷却流道其余部分继续发生堵塞,改善了相关技术中,液冷板在受外力变形时容易导致流道阻塞的技术问题。
本申请提供的连通组件通过将第一连通件的接头与第二连通件过盈配合,并将第一连通件的限位套管套设于对应的接头和第二连通件的外侧,能够二级固定和密封接头与第二连通件,提高了两者的气密可靠性,从而降低相邻两液冷板在连通时,发生冷却介质泄露的风险。
本申请提供的电池包通过在液冷装置的冷却流道的侧壁设置凸起,当液冷板的外侧被挤压时,由于冷却流道侧壁之间设置有凸起,从而凸起将支撑于侧壁之间,从而防止该冷却流道其余部分继续发生堵塞,改善了相关技术中,液冷板在受外力变形时容易导致流道阻塞的技术问题。
附图说明
图1是本申请的一些实现方式中的液冷装置的结构示意图;
图2是本申请的一些实现方式中的液冷装置的俯视示意图;
图3是本申请的一些实现方式中的液冷装置的侧视示意图;
图4是图2中B处放大示意图;
图5是本申请的一些实现方式中的第一液冷板和第二液冷板之间未设置连通组件时的配合结构示意图;
图6是本申请的一些实现方式中的第一液冷板的结构示意图;
图7是图6中的第一液冷板的侧视示意图;
图8是图1中C处放大示意图;
图9是图3中D处放大示意图;
图10是本申请的一些实现方式中的接头的结构示意图;
图11是本申请的一些实现方式中的限位套管的结构示意图;
图12是本申请的一些实现方式中的第一子连通件的结构示意图;
图13是本申请的一些实现方式中的第二子连通件的结构示意图;
图14是本申请的一些实现方式中的液冷板的截面结构示意图;
图15是图14中A处放大示意图;
图16是本申请的一些实现方式中的堵块的结构示意图。
附图标记说明:
液冷装置200;液冷板10;配合部100;第一液冷板101;第二液冷板102;第一配合部103;第二配合部104;侧壁20;第一侧壁105;第二侧壁106;限位条107;安装腔108;连通口109;凸起110;第一凸起111;第二凸起112;冷却流道120;第一流道121;第二流道122;间隔件130;接头201;限位套管202;第一子连通件203;第二子连通件204;密封圈205;连通组件210;第一连通件211;第二连通件212;空腔1001;第一端2011;第二端2012;环状凹槽2013;缺口2021;第一段2031;第二段2032;第三段2033;电池包300;堵块301;汇流通道302;开口303;第一方向X;第二方向Y。
本发明的实施方式
在本申请的描述中,除非另有明确的规定和限定,术语“相连”、“连接”、“固定”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;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。
在本申请中,除非另有明确的规定和限定,第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触,也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且,第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方,第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方,第一特征水平高度小于第二特征。
在本实施例的描述中,术语“上”、“下”、“左”、“右”、“前”、“后”等方位或位置关系为基于附图所示的方位或位置关系,是为了便于描述和简化操作,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”用于在描述上加以区分,并没有特殊的含义。
图1是本申请的一些实现方式中的液冷装置的结构示意图。图2是本申请的一些实现方式中的液冷装置的俯视示意图。图3是本申请的一些实现方式中的液冷装置的侧视示意图。
请参照图1、图2以及图3,本申请的实施例提供一种液冷装置。该液冷装置200用于冷却电池包300中的多个电芯(图中未示出)。液冷装置200包括多个液冷板10。
在一些实现方式中,如图1和图2所示,液冷板10包括多个第一液冷板101和多个第二液冷板102。多个第一液冷板101和多个第二液冷板102沿第一方向X交替排列,第一液冷板101和相邻的第二液冷板102在第二方向Y上围成多个安装腔108,且相邻两安装腔108之间密封设置。每一电芯安装于对应的安装腔108内,即液冷板10抵靠电芯。可以理解的,在一些实现方式中,第一液冷板101和第二液冷板102可直接抵靠电芯,在另一些实现方式中,第一液冷板101和第二液冷板102也可通过导热胶抵靠电芯,即第一液冷板101和第二液冷板102与电芯之间设置有导热胶。
如图10所示,第一液冷板101和相邻的第二液冷板102之间通过连通组件210连通。多个第一液冷板101、多个第二液冷板102以及多个连通组件210共同构成了位于电池包300侧的冷却系统,其具有用于冷却介质流动的流道以及对应的输入口和输出口。可以理解的,该冷却系统可通过输入口和输出口与外部输送装置连通,从而构成完整的冷却循环系统。需要进行说明的是,第一方向X和第二方向Y相交。
可以理解的,由于每一电芯均位于对应的安装腔108中,且相邻的两安装腔108之间互相绝缘,从而当某一安装腔108内的电芯发生热失控时,其将被限制在对应的安装腔108中,不会发生热蔓延,因此,相邻的电芯不会受到影响。可以理解的,上述设置改善了相关技术中当一电芯热失控时,将会使得相邻的电芯受到影响的技术问题。
图4是图2中B处放大示意图。图5是本申请的一些实现方式中的第一液冷板和第二液冷板之间未设置连通组件时的配合结构示意图。图6是本申请的一些实现方式中的第一液冷板的结构示意图。图7是图6中的第一液冷板的侧视示意图。
请参照图4至图7,第一液冷板101和第二液冷板102在第二方向Y上均形成有多个交替排列的配合部100,配合部100呈弯曲状。
第一液冷板101上对应位置处的配合部100与第二液冷板102上对应位置处的配合部100形成安装腔108。具体的,多个配合部100包括多个第一配合部103和多个第二配合部104(如图5所示)。
在同一液冷板中,多个第一配合部103和多个第二配合部104沿第二方向Y交替排列。当第一液冷板101和第二液冷板102邻近设置时,第一液冷板101的第一配合部103与第二液冷板102的第二配合部104围成安装腔108。
可以理解的,第一液冷板101和第二液冷板102的组合为本申请中液冷装置200的最小循环单元(如图4所示),本申请中的液冷装置200由多个循环单元组合而成。
在一些实现方式中,在同一液冷板10中,相邻的第一配合部103和第二配合部104的开口方向相同(未图示),且第一液冷板101的第一配合部103和第二配合部104的开口方向与第二液冷板102的第一配合部103和第二配合部104的开口方向相反。可以理解的,第一液冷板101的第一配合部103和第二液冷板102的第二配合部104配合形成安装腔108,第一液冷板101的第二配合部104和第二液冷板102的第一配合部103配合形成安装腔108。通过上述设置,每一循环单元中的安装腔108形成一行,相邻两行安装腔108在第一方向X上对齐,从而使得本申请的液冷装置200能够很好的排布方形电芯。
当电芯为圆柱形等类似形状时,上述实施例中的排列不能很好的利用空间。因此,在一些实现方式中,在同一液冷板10中,相邻的第一配合部103和第二配合部104的开口方向相反。在任一循环单元中,第一液冷板101的第一配合部103和第二液冷板102的第二配合部104配合形成安装腔108,第一液冷板101的第而配合部和第二液冷板102的第一配合部103配合形成安装腔108。而在相邻的两循环单元之间,前一循环单元的第一液冷板101和后一循环单元的第二液冷板102彼此间也可形成安装腔108。通过上述设置,每一循环单元中的安装腔108形成一行,相邻两行安装腔108在第一方向X上错位设置。可以理解的,错位设置可以提高液冷装置200容纳圆柱等类似形状的电芯数量。
对应于每一安装腔108中,每一第一配合部103的第一端与对应的第二配合部104的第一端通过粘接胶固定连接,第一配合部103的第二端与对应的第二配合部104的第二端通过粘接胶固定连接。可以理解的是,上述第一端和第二段仅为更好的描述,液冷板10为一整体。如相邻两第一配合部103中,前一第一配合部103的第二端和后一第一配合部103的第一端是第二配合部104的组成部分。第一液冷板101和第二液冷板102相接触的部分通过胶粘固定,使得相邻两安装腔108彼此间密封,从而防止电芯热失控时发生热蔓延。
在一些实现方式中,每一安装腔108的形状与对应的电芯的形状相匹配。如电芯的外壳为圆柱形,则将围成安装腔108的第一配合部103和第二配合部104设置为呈与电芯外壳相匹配的弧形。为了提高电芯的稳定性,第一配合部103和第二配合部104包裹电芯的外侧面。
在一些实现方式中,安装腔108中,液冷板10朝向电芯的侧壁设置有限位条107。限位条107可以粘接于液冷板10。可以理解的,限位条107能够提高液冷装置200的刚性,且能够保证电芯和液冷板10之间有空间容纳结构胶,同时,还能对电芯起到限位作用。
图8为图1的C处放大示意图,图9为图3中D处放大示意图。图8和图9示出了本申请的相邻两液冷板之间通过连通组件210进行连接。图10是本申请的一些实现方式中的接头的结构示意图。图11是本申请的一些实现方式中的限位套管的结构示意图。图12是本申请的一些实现方式中的第一子连通件的结构示意图。图13是本申请的一些实现方式中的第二子连通件的结构示意图。
请参照图10至图13,每一液冷板10内设有冷却流道,液冷板10上设有与冷却流道相连通的连通口109,连通组件210用于连通相邻两液冷板10。连通组件210包括两第一连通件211和一第二连通件212。第一连通件211包括接头201和限位套管202。两第一连通件211位于相邻两液冷板10之间,每一第一连通件211的接头201的第一端2011与对应的液冷板10的连通口109连通,每一第一连通件211的接头201的第二端2012与第二连通件212连通且两者之间过盈配合,限位套管202套设于对应的接头201和第二连通件212的外侧。
可以理解的,将接头201与第二连通件212之间设置为过盈配合,并在接头201和第二连通件212的外侧套设限位套管202,即二级固定和密封接头201与第二连通件212,提高了两者的气密可靠性,从而防止相邻两液冷板10在连通时,容易发生冷却介质泄露的技术问题。
在一些实现方式中,为提高第二连通件212和接头201之间的密封性,第一连通件211还包括密封圈205。密封圈205位于接头201的第二端2012和第二连通件212之间,第二连通件212和接头201通过密封圈205过盈配合。可以理解的是,通过设置密封圈205使第二连通件212和接头201两者过盈配合,能够在使两者固定时,同时保证良好的密封性。
而为了防止密封圈205脱落以及对密封圈205的位置进行限定。在第二连通件212的侧壁和/或接头201的侧壁设有环状凹槽2013,部分密封圈205位于环状凹槽2013内。可以理解的,密封圈205应凸出于环状凹槽2013,以使第二连通件212和接头201之间过盈配合以及保证良好的密封性能。同时,设置环状凹槽2013还能便于第二连通件212和接头201之间的连接,提高了组装的便捷性。
环状凹槽2013的个数应大于或等于密封圈205的个数,可以理解的,当环状凹槽2013的个数大于密封圈205的个数时,多出的环状凹槽2013能够作为备用,当密封圈205从对应的环状凹槽2013脱落时,可以继续安装于备用的环状凹槽2013,从而使第二连通件212和接头201具备良好的密封性能,同时降低了两者的组装难度。
在一些实现方式中,接头201套设于第二连通件212的外侧,接头201的外侧设置有外螺纹,限位套管202设有内螺纹,限位套管202与接头201螺纹连接。可以理解的,当第二连通件212和接头201连接时,因两者采用过盈配合的方式连接,故接头201的外径将增大,若限位套管202在配合的过程中已经套设于接头201的外侧,由于限位套管202起限位的作用,故此时的第二连通件212和接头201的安装难度将加大。因此,在第二连通件212和接头201的安装过程中,可先将限位套管202套设于第二连通件212或接头201未过盈配合的部分,待第二连通件212和接头201过盈配合完成后,再将限位套管202套设于接头201的外侧。又由于第二连通件212和接头201已处于过盈配合状态,接头201的外径增大,将限位套管202移至配合处的难度较大,故在接头201和限位套管202上设置螺纹,通过螺纹将限位套管202拧至配合处,以起到限位作用。
在一些实现方式中,限位套管202的端部设置有多个缺口2021,使得限位套管202能够更便捷的到达配合处。
在一些实现方式中,为了方便第二连通件212和接头201的连接,将接头201的第二端2012端部的外径设置为小于第二连通件212的内径,并使接头201的第二端2012的外径以远离第二连通件212的方向逐渐增大。
可以理解的,在其他实现方式中,也可将第二连通件212套设于接头201的外侧,此时,第二连通件212的外侧也可设置外螺纹,第二连通件212的外径也可设置为以远离接头201的方向逐渐增大。
在一些实现方式中,请参阅图12和图13,第二连通件212包括第一子连通件203和第二子连通件204,第一子连通件203用于相邻两液冷板10之间的连接,第二子连通件204用于与最外侧液冷板10相连通,以作为液冷装置200的输入端/输出端。
第一子连通件203包括两个第一段2031、两个第二段2032以及第三段2033。两个第一段2031相背设置,每一第二段2032与对应的第一段2031弯折地连接,两第二段2032通过第三段2033连接。两个第二段2032的靠近第一段2031的端部之间的距离小于两个第二段2032的靠近第三段2033的端部之间的距离。
可以理解的,上述设置使得第一子连通件203具有足够的形变余量,当相邻两液冷板10之间的距离增大或减小时,第一子连通件203在对应方向上的长度可对应增大或减小。
在一些实现方式中,接头201的第一端2011与连通口109焊接连接,可以理解的,两者之间密封设置。
图14是本申请的一些实现方式中的液冷板的截面结构示意图。图15是图14中A处放大示意图。图16是本申请的一些实现方式中的堵块的结构示意图。
请参照图14至图16,在一些实现方式中,每一液冷板10包括空腔1001,空腔1001内设有多个间隔件130,多个间隔件130与空腔1001的腔壁围成多个冷却流道120,如间隔件130的两端分别连接空腔1001的相对两腔壁以将空腔1001分隔成多个冷却流道120。可以理解的,通过间隔件130将空腔1001间隔为多个冷却流道120,使得液冷板10被挤压时,对应冷却流道120处的间隔件130将作为支撑结构,保证冷却流道120的畅通。
冷却流道120的侧壁20设有凸起110,当液冷板10的外侧被挤压时,凸起110抵接相对的侧壁20以至少将冷却流道120分隔为第一流道121和第二流道122。可以理解的,凸起110至少将冷却流道120划分为两个较小的流道。在一些实现方式中,根据凸起110的形状和位置不同,凸起110将冷却流道120划分为三个及以上的流道。在一些实现方式中,根据凸起110的形状和位置不同,流道的形状也可不同。
凸起110包括第一凸起111,冷却流道120的侧壁20包括相对设置的第一侧壁105和第二侧壁106,第一侧壁105设置有第一凸起111,当液冷板10的外侧未被挤压时,第一凸起111与相对的侧壁间隔,当液冷板10的外侧被挤压时,第一凸起111至少将冷却流道120分隔为第一流道121和第二流道122。
可以理解的,当液冷板10的外侧被挤压时,由于冷却流道120的第一侧壁105和第二侧壁106之间设置有凸起110,从而凸起110将支撑于第一侧壁105和第二侧壁106之间,从而防止该冷却流道120其余部分继续发生堵塞。
在一些实现方式中,凸起110、间隔件130以及液冷板10可以一体成型。而为了降低成型难度,凸起110还包括第二凸起112,在第二侧壁106上设置有第二凸起112,第二凸起112的位置与第一凸起111的位置相对应,且液冷板10的外侧未被挤压时,第一凸起111与第二凸起112间隔,当液冷板10的外侧被挤压时,第一凸起111抵接于第二凸起112,以将冷却流道120至少分隔为第一流道121和第二流道122。
在一些实现方式中,第二侧壁106设有第二凸起112,第一凸起111与第二凸起112交错设置,第一凸起111与第二侧壁106未设置第二凸起112的部分相对且间隔,第二凸起112与第一侧壁105未设置第一凸起111的部分相对且间隔,当液冷板10的外侧被挤压时,第一凸起111抵接于第二侧壁106未设置第二凸起112的部分,第二凸起112抵接于第一侧壁105未设置第一凸起111的部分。
在一些实现方式中,凸起110对应于侧壁20的中部的部分的厚度,大于凸起110对应于侧壁20的侧部的部分的厚度。如凸起110呈弧形或矩形,可以理解的,上述弧形或矩形,指的是凸起110的截面形状(如图14所示),凸起110和间隔件130的延伸形状与液冷板10的形状相同。
在一些实现方式中,位置较低处的冷却流道120中的第一凸起111和第二凸起112在自然状态下的距离(未被挤压时),小于位置较高处的冷却流道120中的第一凸起111和第二凸起112在自然状态下的距离。或位置较低处的冷却流道120中的第一凸起111和第二凸起112在自然状态下的距离(未被挤压时),大于位置较高处的冷却流道120中的第一凸起111和第二凸起112在自然状态下的距离。可以理解的,上述设置可加快对应冷却流道120内的冷却介质的流速,以及根据需要利用冷却介质为对应冷却流道120提供支撑,抵抗外部挤压。
在一些实现方式中,请参阅图8和图9,任意液冷板10中,多个冷却流道120与对应的连通口109相连通,以在连通口109处进行汇流,液冷板10的两端均套设有堵块301。液冷板10朝向堵块301的侧壁设有开口,堵块301内部设置有汇流通道302,以使得液冷板10中的冷却流道120也可通过堵块301进行汇流。堵块301设置有开口303,开口303的形状与接头201的形状相匹配,以避免接头201阻碍堵块301的安装。
本申请实施例提供一种电池包300,该电池包300包括液冷装置200。
其中,电池包300包括多个电芯和液冷装置200。液冷装置200用于冷却电池包300中的多个电芯。液冷装置200包括多个液冷板10和多个连通组件210。
液冷板10包括多个第一液冷板101和多个第二液冷板102。多个第一液冷板101和多个第二液冷板102沿第一方向X交替排列,第一液冷板101和相邻的第二液冷板102在第二方向Y上围成多个安装腔108,且相邻两安装腔108之间密封设置。每一电芯安装于对应的安装腔108内。第一液冷板101和相邻的第二液冷板102之间通过连通组件210连通。多个第一液冷板101、多个第二液冷板102以及多个连通组件210共同构成了位于电池包300侧的冷却系统,其具有用于冷却介质流动的流道以及对应的输入口和输出口。可以理解的,该冷却系统可通过输入口和输出口与外部输送装置连通,从而构成完整的冷却循环系统。需要进行说明的是,第一方向X和第二方向Y相交。
可以理解的,由于每一电芯均位于对应的安装腔108中,且相邻的两安装腔108之间互相绝缘,从而当某一安装腔108内的电芯发生热失控时,其将被限制在对应的安装腔108中,不会发生热蔓延,因此,相邻的电芯不会受到影响。可以理解的,上述设置改善了相关技术中当一电芯热失控时,将会使得相邻的电芯受到影响的技术问题。

Claims (33)

  1. 一种液冷装置(200),用于冷却电池包(300)中的电芯,所述液冷装置(200)包括:
    液冷板(10),所述液冷板(10)包括冷却流道(120);
    其中,所述冷却流道(120)的部分侧壁(20)设有凸起(110),当所述液冷板(10)的外侧未被挤压时,所述凸起(110)与相对的侧壁(20)间隔;当所述液冷板(10)的外侧被挤压时,所述凸起(110)抵接相对的侧壁(20)以至少将所述冷却流道(120)分隔为第一流道(121)和第二流道(122)。
  2. 根据权利要求1所述的液冷装置(200),其中,所述液冷板(10)设有空腔(1001)以及设于所述空腔(1001)内的多个间隔件(130),所述间隔件(130)的两端分别连接所述空腔(1001)的相对两腔壁以将所述空腔(1001)分隔成多个所述冷却流道(120)。
  3. 根据权利要求1所述的液冷装置(200),其中,所述凸起(110)包括第一凸起(111),所述冷却流道(120)包括相对设置的第一侧壁(105)和第二侧壁(106),所述第一侧壁(105)设置有所述第一凸起(111),所述第一凸起(111)与所述第二侧壁(106)相对且间隔,当所述液冷板(10)的外侧被挤压时,所述第一凸起(111)至少将所述冷却流道(120)分隔为所述第一流道(121)和所述第二流道(122)。
  4. 根据权利要求3所述的液冷装置(200),所述凸起(110)还包括第二凸起(112),所述第二侧壁(106)设有所述第二凸起(112),所述第一凸起(111)与所述第二凸起(112)相对且间隔,当所述液冷板(10)的外侧被挤压时,所述第一凸起(111)抵接于所述第二凸起(112),以将所述冷却流道(120)至少分隔为所述第一流道(121)和所述第二流道(122)。
  5. 根据权利要求3所述的液冷装置(200),所述凸起(110)还包括第二凸起(112),所述第二侧壁(106)设有所述第二凸起(112),所述第一凸起(111)与所述第二凸起(112)交错设置,所述第一凸起(111)与所述第二侧壁(106)未设置所述第二凸起(112)的部分相对且间隔,所述第二凸起(112)与所述第一侧壁(105)未设置所述第一凸起(111)的部分相对且间隔,当所述液冷板(10)的外侧被挤压时,所述第一凸起(111)抵接于所述第二侧壁(106)未设置所述第二凸起(112)的部分,所述第二凸起(112)抵接于所述第一侧壁(105)未设置所述第一凸起(111)的部分。
  6. 根据权利要求1-5任一项所述的液冷装置(200),其中,所述凸起(110)对应于所述侧壁(20)的中部的部分的厚度,大于所述凸起(110)对应于所述侧壁(20)的侧部的部分的厚度。
  7. 根据权利要求6所述的液冷装置(200),其中,所述凸起(110)呈弧形或矩形。
  8. 根据权利要求1-5任一项所述的液冷装置(200),其中,所述凸起(110)与所述液冷板(10)一体成型。
  9. 根据权利要求1-5任一项所述的液冷装置(200),其中,相邻两所述液冷板(10)连接以形成有多个独立的安装腔(108),所述电芯安装于所述安装腔(108),所述安装腔(108)的形状与所述电芯的形状相匹配,且相邻两所述安装腔(108)之间密封设置。
  10. 根据权利要求9所述的液冷装置(200),其中,所述安装腔(108)中,所述液冷板(10)朝向所述电芯的侧壁设置有限位条(107)。
  11. 根据权利要求10所述的液冷装置(200),其中,相邻所述限位条(107)之间容纳有导热结构胶。
  12. 根据权利要求1-5任一项所述的液冷装置(200),其中,所述液冷板(10)上设有与所述冷却流道(120)相连通的连通口(109);每一所述液冷板(10)中,多个所述冷却流道(120)与对应的所述连通口(109)相连通,以通过所述连通口(109)汇流。
  13. 根据权利要求12所述的液冷装置(200),所述液冷装置(200)还包括堵块(301),所述堵块(301)套设于所述液冷板(10)的端部,且所述液冷板(10)朝向所述堵块(301)的侧壁设有开口(303),所述堵块(301)通过所述开口(303)与所述液冷板(10)的多个所述冷却流道(120)连通;
    其中,所述堵块(301)的内部设置有汇流通道(302),多个所述冷却流道(120)通过所述汇流通道汇流(302)。
  14. 根据权利要求1-13任一项所述的液冷装置(200),其中,所述液冷装置(200)包括:
    多个所述液冷板(10),所述液冷板(10)抵靠所述电芯,所述液冷板(10)上设有与冷却流道(120)相连通的连通口(109),所述液冷装置(200)还包括:
    连通组件(210),所述连通组件(210)包括第一连通件(211)和第二连通件(212),所述第一连通件(211)包括接头(201)和限位套管(202),所述接头(201)的第一端(2011)与所述连通口(109)连通,所述接头(201)的第二端(2012)与所述第二连通件(212)过盈配合,所述限位套管(202)套设于所述接头(201)和所述第二连通件(212)的外侧。
  15. 根据权利要求14所述的液冷装置(200),其中,所述连通组件(210)连通相邻两所述液冷板(10),所述连通组件(210)包括两第一连通件(211),两所述第一连通件(211)位于相邻两所述液冷板(10)之间,每一所述第一连通件(211)的所述接头(201)的第一端(2011)与对应的所述液冷板(10)的所述连通口(109)连通。
  16. 根据权利要求14所述的液冷装置(200),所述第一连通件(211)还包括密封圈(205),所述密封圈(205)位于所述接头(201)的第二端(2012)和所述第二连通件(212)之间,所述第二连通件(212)和所述接头(201)通过所述密封圈(205)过盈配合。
  17. 根据权利要求16所述的液冷装置(200),其中,所述第二连通件(212)的侧壁和/或所述接头(201)的侧壁设有环状凹槽(2013),至少部分所述密封圈(205)位于所述环状凹槽(2013)内。
  18. 根据权利要求14-17任一项所述的液冷装置(200),其中,所述接头(201)或所述第二连通件(212)的侧壁设有外螺纹,所述限位套管(202)设有内螺纹,所述限位套管(202)与所述接头(201)或所述第二连通件(212)螺纹连接。
  19. 根据权利要求14-17任一项所述的液冷装置(200),其中,当所述接头(201)的第二端(2012)插入所述第二连通件(212)时,所述接头(201)的第二端(2012)的外径以朝向所述连通口(109)的方向逐渐增大;或当所述第二连通件(212)插入所述接头(201)的第二端(2012)时,所述第二连通件(212)的外径以远离所述连通口(109)的方向逐渐增大。
  20. 根据权利要求14-17任一项所述的液冷装置(200),其中,所述第二连通件(212)包括两个相背的第一段(2031)、弯折地连接两个所述第一段(2031)的两个第二段(2032),连接两个所述第二段(2032)的第三段(2033),两个所述第二段(2032)的靠近所述第一段(2031)的端部之间的距离小于两个所述第二段(2032)的靠近所述第三段(2033)的端部之间的距离。
  21. 根据权利要求14-17任一项所述的液冷装置(200),其中,所述接头(201)的第一端与所述连通口(109)之间焊接连接且密封设置。
  22. 根据权利要求14-17任一项所述的液冷装置(200),其中,所述限位套管(202)朝向所述连通口(109)的一端开设有缺口(2021)。
  23. 根据权利要求1-22任一项所述的液冷装置(200),其中,所述液冷装置(200)包括多个所述液冷板(10);所述液冷板(10)包括多个第一液冷板(101)和多个第二液冷板(102),多个所述第一液冷板(101)和多个所述第二液冷板(102)沿第一方向(X)交替排列,每一所述第一液冷板(101)和相邻的所述第二液冷板(102)在与所述第一方向(X)相交的第二方向(Y)上围成多个独立的安装腔(108);
    其中,每一所述安装腔(108)用于安装对应的所述电芯,且相邻两所述安装腔(108)之间密封设置。
  24. 根据权利要求23所述的液冷装置(200),其中,所述第一液冷板(101)和所述第二液冷板(102)在所述第二方向(Y)上均形成有多个交替排列的配合部(100);
    其中,所述配合部(100)呈弯曲状,所述第一液冷板(101)上对应位置处的所述配合部(100)与所述第二液冷板(102)上对应位置处的所述配合部(100)连接以形成所述安装腔(108)。
  25. 根据权利要求24所述的液冷装置(200),其中,所述配合部(100)包括多个第一配合部(103)和多个第二配合部(104),在同一所述液冷板(10)中,多个所述第一配合部(103)和多个所述第二配合部(104)沿所述第二方向(Y)交替排列;
    其中,所述第一液冷板(101)的第一配合部(103)与所述第二液冷板(102)的第二配合部(104)围成所述安装腔(108)。
  26. 根据权利要求25所述的液冷装置(200),其中,在同一所述液冷板(10)中,相邻的所述第一配合部(103)和所述第二配合部(104)的开口方向相反。
  27. 根据权利要求25所述的液冷装置(200),其中,在同一所述液冷板(10)中,相邻的所述第一配合部(103)和所述第二配合部(104)的开口方向相同,且所述第一液冷板(101)的所述第一配合部(103)的开口方向与所述第二液冷板(102)的所述第一配合部(103)的开口方向相反,所述第一液冷板(101)的所述第二配合部(104)的开口方向与所述第二液冷板(102)的所述第二配合部(104)的开口方向相反。
  28. 根据权利要求27所述的液冷装置(200),其中,所述第一液冷板(101)和相邻的所述第二液冷板(102)之间的多个所述安装腔(108)在所述第二方向(Y)上排成一行,沿第一方向(X)相邻两行所述安装腔(108)在所述第一方向(X)上错位设置。
  29. 根据权利要求25所述的液冷装置(200),其中,在每一所述安装腔(108)中,每一所述第一配合部(103)的第一端与对应的所述第二配合部(104)的第一端通过粘接胶固定连接,所述第一配合部(103)的第二端与对应的所述第二配合部(104)的第二端通过粘接胶固定连接。
  30. 根据权利要求25所述的液冷装置(200),其中,所述电芯的外壳为圆柱形,围成所述安装腔(108)的所述第一配合部(103)和所述第二配合部呈(104)与所述电芯外壳相匹配的弧形,且所述第一配合部(103)和所述第二配合部(104)包裹所述电芯的外侧面。
  31. 根据权利要求24-30任一项所述的液冷装置(200),其中,所述第一液冷板(101)和所述第二液冷板(102)内设有冷却流道(120),所述第一液冷板(101)和所述第二液冷板(102)的两端设有连通所述冷却流道(120)的连通口(109),相邻两所述第一液冷板(101)和所述第二液冷板(102)中,位于同一端的所述连通口(109)通过连通组件(210)连通。
  32. 一种连通组件(210),所述连通组件(210)包括第一连通件(211)和第二连通件(212),所述第一连通件(211)包括接头(201)和限位套管(202),所述接头(201)与所述第二连通件(212)过盈配合,所述限位套管(202)套设于对应的所述接头(201)和所述第二连通件(212)的外侧。
  33. 一种电池包(300),所述电池包(300)包括多个电芯以及如权利要求1-31任一项所述的液冷装置(200)。
PCT/CN2024/110404 2023-09-12 2024-08-07 液冷装置、连通组件及电池包 Pending WO2025055604A1 (zh)

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