WO2025001289A1 - 散热件、储能装置及用电设备 - Google Patents

散热件、储能装置及用电设备 Download PDF

Info

Publication number
WO2025001289A1
WO2025001289A1 PCT/CN2024/080548 CN2024080548W WO2025001289A1 WO 2025001289 A1 WO2025001289 A1 WO 2025001289A1 CN 2024080548 W CN2024080548 W CN 2024080548W WO 2025001289 A1 WO2025001289 A1 WO 2025001289A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat dissipation
heat sink
wall
reinforcing rib
thickness dimension
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2024/080548
Other languages
English (en)
French (fr)
Inventor
钟德良
吴长风
黄伟鹏
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.)
Xiamen Hithium Energy Storage Technology Co Ltd
Original Assignee
Xiamen Hithium Energy Storage Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xiamen Hithium Energy Storage Technology Co Ltd filed Critical Xiamen Hithium Energy Storage Technology Co Ltd
Publication of WO2025001289A1 publication Critical patent/WO2025001289A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—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
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H01M10/6555—Rods or plates arranged between the cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—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
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
    • H05K7/20254—Cold plates transferring heat from heat source to coolant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/10—Batteries in stationary systems, e.g. emergency power source in plant
    • 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
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the field of energy storage technology, and in particular to a heat sink, an energy storage device and an electrical equipment.
  • the energy storage device generally includes a battery cell module, a heat sink and a box body, wherein the box body includes a receiving cavity, and the battery cell module and the heat sink are located in the receiving cavity of the box body.
  • the battery cell module is formed by stacking a plurality of battery cells.
  • the heat sink has a cooling channel, and the heat sink is attached to the outer surface of the battery cell module to dissipate heat from the battery cell module.
  • the heat sink in order to dissipate heat from multiple surfaces of the battery cell module, the heat sink usually needs to be bent, but the bending part is prone to local deformation or even fracture due to stress concentration, making it difficult for the cooling medium in the heat sink to pass through the bending part of the heat sink, affecting the heat dissipation effect of the heat sink.
  • the present application provides a heat sink, an energy storage device, and electrical equipment, which can improve the structural strength of the heat sink corresponding to the bending part and avoid local deformation or breakage of the heat sink after the bending process.
  • the present application provides a heat sink, comprising a first heat sink and at least one second heat sink, wherein the first heat sink and the at least one second heat sink are connected, a transition section is formed between the first heat sink and the at least one second heat sink, and the heat sink is provided with a liquid inlet channel and a liquid outlet channel, wherein the liquid inlet channel and the liquid outlet channel are located inside the first heat sink and the at least one second heat sink, and pass through the transition section;
  • Two harmonica tubes are arranged inside the transition section, and the two harmonica tubes are respectively located in the liquid inlet channel and the liquid outlet channel, and each of the harmonica tubes has a flow channel cavity, and the flow channel cavity of the harmonica tube located in the liquid inlet channel is communicated with the liquid inlet channel, and the flow channel cavity of the harmonica tube located in the liquid outlet channel is communicated with the liquid outlet channel;
  • the harmonica pipe comprises a first wall, a second wall, a third wall and a fourth wall, wherein the first wall and the second wall are arranged opposite to each other along the height direction of the heat sink, and the third wall and the fourth wall are connected between the first wall and the second wall and are arranged opposite to each other along the thickness direction of the heat sink;
  • the first heat dissipation part includes a first heat dissipation plate and a second heat dissipation plate, the first heat dissipation plate and the second heat dissipation plate are arranged opposite to each other, the second heat dissipation part includes a third heat dissipation plate and a fourth heat dissipation plate, the third heat dissipation plate and the fourth heat dissipation plate are arranged opposite to each other, the first heat dissipation plate is connected to the third heat dissipation plate, and the second heat dissipation plate is connected to the fourth heat dissipation plate.
  • the present application provides an energy storage device, comprising a box, a battery cell module and the heat sink as described above, the box being provided with a liquid inlet through hole and a liquid outlet through hole, the heat sink and the battery cell module being accommodated inside the box, the heat sink being fitted to a surface of the battery cell module, the liquid inlet channel being connected to the liquid inlet through hole, and the liquid outlet channel being connected to the liquid outlet through hole.
  • the present application provides an electrical device, comprising the energy storage device as described above.
  • the present application provides a harmonica tube at the connection between the first heat dissipation part and the second heat dissipation part, so as to enhance the structural strength of the connection between the heat dissipation part and the first heat dissipation part, and avoid the transition section between the first heat dissipation part and the second heat dissipation part from being easily broken when the transition section between the first heat dissipation part and the second heat dissipation part is formed by bending.
  • the heat dissipation part and the harmonica tube can meet the strength requirements, and avoid excessive concentration of stress in the transition section of the heat dissipation part or the harmonica tube when the heat dissipation part and the harmonica tube are bent, resulting in partial deformation or breakage of the transition section or the harmonica tube.
  • FIG1 is a schematic diagram of the structure of an energy storage device provided in an embodiment of the present application.
  • FIG2 is a schematic diagram of the exploded structure of the energy storage device shown in FIG1 ;
  • FIG3 is a schematic structural diagram of a heat sink of the energy storage device shown in FIG2 ;
  • FIG4 is a schematic structural diagram of a heat sink of the energy storage device shown in FIG3 at a second angle
  • FIG5 is a schematic structural diagram of the heat sink of the energy storage device shown in FIG3 from a third angle
  • FIG6 is an enlarged structural schematic diagram of the M portion of the heat sink shown in FIG5 ;
  • FIG7 is a schematic diagram of a cross-sectional structure of the heat sink shown in FIG5 along the A-A direction;
  • FIG8 is an enlarged structural schematic diagram of the N portion of the heat sink shown in FIG7;
  • FIG. 9 is a schematic diagram showing the dimensions of the harmonica tube shown in FIG. 8 .
  • the main way to generate green electricity is to develop green energy such as photovoltaics and wind power to replace fossil energy.
  • the generation of green electricity generally relies on photovoltaics, wind power, water potential, etc., while wind and solar energy generally have strong intermittent and volatile problems, which will cause instability in the power grid, insufficient electricity during peak hours, too much electricity during low hours, and unstable voltage will also cause damage to electricity.
  • the present application provides an energy storage device, which has a group of chemical batteries in it.
  • the chemical elements in the chemical batteries are mainly used as energy storage media.
  • the charging and discharging process is accompanied by chemical reactions or changes in the energy storage media.
  • the electric energy generated by wind energy and solar energy is stored in the chemical batteries.
  • the use of external electric energy reaches a peak, the stored electricity is released for use, or transferred to places where electricity is scarce for use.
  • the energy storage device provided in this application has a wide range of application scenarios, including (wind and solar) power generation side energy storage, grid side energy storage, base station side energy storage, and user side energy storage.
  • Energy storage devices are usually used in the form of energy storage containers, small and medium-sized energy storage cabinets, and household small energy storage boxes. Energy storage containers, small and medium-sized energy storage cabinets, household small energy storage boxes and other equipment contain energy storage devices.
  • the energy storage device 1000 may include but is not limited to a single cell, a battery module, a battery pack, a battery system, etc.
  • the actual application form of the energy storage device 1000 provided in the embodiment of the present application may be but is not limited to the listed products, and may also be other application forms.
  • the embodiment of the present application does not strictly limit the application form of the energy storage device 1000.
  • the embodiment of the present application only takes the energy storage device 1000 as a multi-core battery as an example for explanation.
  • the energy storage device 1000 includes a box body 300, a battery cell module 200 and a heat sink 100.
  • the box body 300 includes a cover shell 310 and a bottom shell 320.
  • the bottom shell 320 is provided with a liquid inlet through hole 321 and a liquid outlet through hole 322.
  • the battery cell module 200 and the heat sink 100 are fixed to the bottom shell 320.
  • the cover shell 310 is provided on the battery cell module 200 and the heat sink 100 and is fixedly connected to the bottom shell 320 to enclose the battery cell module 200 and the heat sink 100 in the box body 300.
  • the length direction of the heat sink 100 shown in FIG. 2 is defined as the X-axis direction
  • the width direction of the heat sink 100 is defined as the Y-axis direction
  • the height direction of the heat sink 100 is defined as the Z-axis direction.
  • the X-axis direction, the Y-axis direction, and the Z-axis direction are perpendicular to each other.
  • the directional terms such as “upper” and “lower” mentioned in the description of the embodiment of the present application are described based on the directional terms shown in FIG. 2 of the specification, with the positive direction of the Z-axis being "upper” and the negative direction of the Z-axis being “lower”, which does not constitute a limitation on the heat sink 100 in the actual application scenario.
  • the "same”, “equal” or “parallel” used in the following text are all allowed to have a certain tolerance.
  • the battery module 200 includes a plurality of battery cells 210, a plurality of connecting sheets 220 and a fixing portion 230.
  • the plurality of battery cells 210 are divided into four battery cell groups A, and the number of battery cells 210 in each battery cell group A is equal and arranged in sequence along the length direction (X-axis direction) of the battery cell module 200.
  • the four battery cell groups A are arranged side by side along the width direction (Y-axis direction) of the battery cell module 200.
  • the plurality of connecting sheets 220 connect the plurality of battery cells 210 to each other, and the fixing portion 230 is arranged on the periphery of the four battery cell groups A, and is used to fasten and connect the four battery cell groups A, and connect the four battery cell groups A into an integrated structure.
  • the fixing portion 230 is a plastic steel belt.
  • the plurality of battery cells 210 may also be divided into one, two or more battery cell groups A; the fixing portion 230 may also be a fixing plate; it is determined according to actual use requirements, and this application does not impose specific restrictions on this.
  • an embodiment of the present application provides a heat sink 100.
  • the heat sink 100 includes a heat sink 10, a harmonica tube, a liquid inlet tube 30, and a liquid outlet tube 40.
  • the harmonica tube is located inside the heat sink 10, and the liquid inlet tube 30 and the liquid outlet tube 40 are connected to the heat sink 10.
  • the heat dissipation portion 10 includes a first heat dissipation portion 11 and at least one second heat dissipation portion 12.
  • the first heat dissipation portion 11 is connected to the at least one second heat dissipation portion 12.
  • the number of the second heat dissipation portions 12 is two.
  • the two second heat dissipation portions 12 are respectively connected to the opposite ends of the first heat dissipation portion 11 along the length direction, and the two second heat dissipation portions 12 are arranged at an angle with the first heat dissipation portion 11.
  • the number of the second heat dissipation parts 12 may also be one or more, and the present application does not impose any specific limitation on the number of the second heat dissipation parts 12 .
  • the first heat dissipation part 11 includes a first heat dissipation plate 111 and a second heat dissipation plate 112.
  • the first heat dissipation plate 111 is provided with a liquid inlet 113 and a liquid outlet 114.
  • the liquid inlet 113 penetrates two surfaces of the first heat dissipation plate 111 that are arranged opposite to each other in the thickness direction
  • the liquid outlet 114 penetrates two surfaces of the first heat dissipation plate 111 that are arranged opposite to each other in the thickness direction.
  • the liquid inlet 113 and the liquid outlet 114 are arranged at intervals.
  • the first heat dissipation plate 113 is provided with a liquid inlet 113 and a liquid outlet 114.
  • the first heat sink 111 and the second heat sink 112 are arranged opposite to each other, and a first liquid inlet channel and a first liquid outlet channel are formed between the first heat sink 111 and the second heat sink 112.
  • the first liquid inlet channel and the first liquid outlet channel extend along the length direction of the first heat sink 11, and the first liquid inlet channel and the first liquid outlet channel are arranged at intervals along the height direction of the first heat sink 11.
  • the first liquid inlet channel is connected to the liquid inlet 113, and the first liquid outlet channel is connected to the liquid outlet 114.
  • the thickness dimensions of the first heat sink 111 and the second heat sink 112 are both D0.
  • the second heat dissipation part 12 includes a third heat dissipation plate 121 and a fourth heat dissipation plate 122.
  • the third heat dissipation plate 121 and the fourth heat dissipation plate 122 are arranged opposite to each other along the thickness direction of the second heat dissipation part 12, and a second liquid inlet channel and a second liquid outlet channel are formed between the third heat dissipation plate 121 and the fourth heat dissipation plate 122.
  • the second liquid inlet channel and the second liquid outlet channel extend along the length direction of the second heat dissipation part 12, and the second liquid inlet channel and the second liquid outlet channel are arranged at intervals along the height direction (Z-axis direction) of the second heat dissipation part 12, and the second liquid inlet channel and the second liquid outlet channel are connected.
  • the thickness dimensions of the third heat dissipation plate 121 and the fourth heat dissipation plate 122 are both D0, and the thickness dimensions of the third heat dissipation plate 121 and the fourth heat dissipation plate 122 are equal to the thickness dimensions of the first heat dissipation plate 111 and the second heat dissipation plate 112.
  • the first heat dissipation part 11 is connected to at least one second heat dissipation part 12, and a transition section 13 is formed between the first heat dissipation part 11 and at least one second heat dissipation part 12.
  • the two second heat dissipation parts 12 are respectively connected to the opposite ends of the first heat dissipation part 11 along the length direction, and the two second heat dissipation parts 12 are arranged oppositely along the width direction (Y-axis direction) of the heat dissipation element 100; the first heat dissipation part 11 is connected between the two second heat dissipation parts 12.
  • the two second heat dissipation parts 12 are perpendicular to the first heat dissipation part 11 (a certain process tolerance is allowed).
  • the first heat dissipation plate 111 is respectively connected to the two third heat dissipation plates 121 at the opposite ends along the length direction of the first heat dissipation part 11, and the first heat dissipation plate 111 and the third heat dissipation plate 121 are arranged at an angle, and the angle is arc-shaped;
  • the second heat dissipation plate 112 is respectively connected to the two fourth heat dissipation plates 122 at the opposite ends along the length direction of the first heat dissipation part 11, and the second heat dissipation plate 112 and the fourth heat dissipation plate 122 are arranged at an angle, and the angle is arc-shaped.
  • the heat dissipation part 10 is equivalent to a "U" shape as a whole, and the connection between the first heat dissipation part 11 and the two second heat dissipation parts 12 respectively forms two transition sections 13, specifically the first transition section 131 and the second transition section 132, and the first transition section 131 and the second transition section 132 are both arc-shaped structures.
  • the first transition section 131 and the second transition section 132 are both parts of the first heat dissipation part 11, and are respectively located at the opposite ends of the first heat dissipation part 11 along the length direction.
  • the two second heat dissipation parts 12 are connected to the first heat dissipation part 11 through the first transition section 131 and the second transition section 132 respectively.
  • the opposite ends of the first liquid inlet channel along the length direction of the first heat dissipation part 11 are respectively connected to the two second liquid inlet channels to form a liquid inlet channel; the opposite ends of the first liquid outlet channel along the length direction of the first heat dissipation part 11 are respectively connected to the two second liquid outlet channels to form a liquid outlet channel; the ends of the two second liquid inlet channels facing away from the first liquid inlet channel are respectively connected to the ends of the two second liquid outlet channels facing away from the first liquid outlet channel.
  • the liquid inlet channel and the liquid outlet channel are located inside the first heat dissipation portion 11 and at least one second heat dissipation portion 12.
  • the liquid inlet channel and the liquid outlet channel are located inside the first heat dissipation portion 11 and the two second heat dissipation portions 12.
  • the liquid inlet channel and the liquid outlet channel pass through the transition section 13 between the first heat dissipation portion 11 and the second heat dissipation portion 12.
  • the first heat dissipation part 11 and the two second heat dissipation parts 12 are integrally formed metal structural parts; the two second heat dissipation parts 12 are bent relative to the first heat dissipation part 11 to form a "U"-shaped heat dissipation part 10, and form a first transition section 131 and a second transition section 132 respectively; it can be understood that the first transition section 131 and the second transition section 132 are respectively a part of the first heat dissipation part 11, and are respectively located at the opposite ends of the first heat dissipation part 11 along the length direction.
  • the two transition sections 13 are formed by bending the two second heat dissipation parts 12 relative to the first heat dissipation part 11, and the first transition section 131 and the second transition section 132 are respectively located at the connection between the two second heat dissipation parts 12 and the first heat dissipation part 11, and the two second heat dissipation parts 12 are connected to the first heat dissipation part 11 through the first transition section 131 and the second transition section 132 respectively.
  • the liquid inlet pipe 30 is a hollow pipe with two ends open, one end of the liquid inlet pipe 30 is connected to the liquid inlet port 113, and the other end is connected to the liquid inlet through hole 321 of the bottom shell 320.
  • the liquid outlet pipe 40 is a hollow pipe with two ends open, one end of the liquid outlet pipe 40 is connected to the liquid outlet port 114, and the other end is connected to the liquid outlet through hole 322 of the bottom shell 320.
  • the harmonica tube 20 is an arc-shaped structure.
  • the harmonica tube 20 includes a first wall 21, a second wall 22, a third wall 23 and a fourth wall 24.
  • the first wall 21 and the second wall 22 are arranged opposite to each other along the width direction of the harmonica tube 20.
  • the third wall 23 and the fourth wall 24 are arranged opposite to each other along the thickness direction of the harmonica tube 20, and are connected between the first wall 21 and the second wall 22.
  • the first wall 21, the second wall 22, the third wall 23 and the fourth wall 24 form a flow channel cavity 26 of the harmonica tube 20.
  • the harmonica tube 20 also includes a plurality of reinforcing ribs 25, which are arranged between the first wall 21 and the second wall 22 at intervals along the width direction of the harmonica tube 20, and connect the third wall 23 and the fourth wall 24.
  • the number of the plurality of reinforcing ribs 25 is three, and the plurality of reinforcing ribs 25 include a first reinforcing rib 251, a second reinforcing rib 252 and a third reinforcing rib 253.
  • the first reinforcing rib 251 , the second reinforcing rib 252 and the third reinforcing rib 253 are arranged in sequence at intervals; the second reinforcing rib 252 is located in the middle position of the harmonica tube 20 , and the first reinforcing rib 251 and the third reinforcing rib 253 are respectively located on opposite sides of the second reinforcing rib 252 and are spaced apart from the second reinforcing rib 252 .
  • the thickness dimension of the first wall 21 of the harmonica tube 20 is D1
  • the thickness dimension of the second wall 22 is D2
  • the thickness dimension of the third wall 23 is D3
  • the thickness dimension of the fourth wall 24 is D4.
  • the thickness dimension of the first reinforcing rib 251 is D5
  • the thickness dimension of the second reinforcing rib 252 is D6
  • the thickness dimension of the third reinforcing rib 253 is D7.
  • the distance between the two surfaces of the first wall 21 and the second wall 22 facing each other is L1
  • the width dimension of the harmonica tube 20 is L1.
  • the distance between the two surfaces of the third wall 23 and the fourth wall 24 facing each other is L2, that is, the thickness dimension of the harmonica tube 20 is L2.
  • the number of harmonica tubes 20 is four.
  • Two harmonica tubes 20 are arranged inside each transition section 13, and the two harmonica tubes 20 are respectively located in the liquid inlet channel and the liquid outlet channel inside each transition section 13.
  • the first wall 21 and the second wall 22 of the harmonica tube 20 are relatively arranged along the height direction (Z-axis direction) of the heat sink 100, and the third wall 23 and the fourth wall 24 of the harmonica tube 20 are connected between the first wall 21 and the second wall 22, and are relatively arranged along the thickness direction of the heat sink 100.
  • Two of the harmonica tubes 20 are located inside the first transition section 131, specifically, one of the harmonica tubes 20 is located in the liquid inlet channel inside the first transition section 131, and the flow channel cavity 26 of the harmonica tube 20 is connected to the liquid inlet channel; the other harmonica tube 20 is located in the liquid outlet channel inside the first transition section 131, and the flow channel cavity 26 of the harmonica tube 20 is connected to the liquid outlet channel.
  • the other two harmonica tubes 20 are located inside the second transition section 132.
  • one of the harmonica tubes 20 is located at the liquid inlet channel inside the second transition section 132, and the flow channel cavity 26 of the harmonica tube 20 is connected to the liquid inlet channel; the other harmonica tube 20 is located at the liquid outlet channel inside the second transition section 132, and the flow channel cavity 26 of the harmonica tube 20 is connected to the liquid outlet channel.
  • the flow path of the cooling medium entering the heat sink 100 is: liquid inlet pipe 30 ⁇ liquid inlet port 113 ⁇ first liquid inlet channel ⁇ two harmonica tubes 20 ⁇ two second liquid inlet channels ⁇ two second liquid outlet channels ⁇ two harmonica tubes 20 ⁇ first liquid outlet channel ⁇ liquid outlet port 114 ⁇ liquid outlet pipe 40.
  • the structural strength of the connection between the heat dissipation part 10 corresponding to the first heat dissipation part 11 and the two second heat dissipation parts 12 can be enhanced, that is, the structural strength of the position of the heat dissipation part 10 corresponding to the two transition sections 13 can be enhanced, thereby avoiding the first transition section 131 or the second transition section 132 from being easily broken when bending to form the first transition section 131 and the second transition section 132.
  • the tensile strength of the first heat dissipation part 11 is greater than or equal to 130 MPa (megapascals), the yield strength of the first heat dissipation part 11 is less than or equal to 57.6 MPa, and the elongation at break of the first heat dissipation part 11 is greater than or equal to 30.6%.
  • the tensile strength of the second heat dissipation part 12 is greater than or equal to 130 MPa, the yield strength of the second heat dissipation part 12 is less than or equal to 57.6 MPa, and the elongation at break of the second heat dissipation part 12 is greater than or equal to 30.6%.
  • the tensile strength of the first heat dissipation part 11 is 130 MPa, the yield strength is 57.6 MPa, and the elongation at break is 30.6%;
  • the tensile strength of the second heat dissipation part 12 is 130 MPa, the yield strength is 57.6 MPa, and the elongation at break is 30.6%.
  • the tensile strength of the harmonica pipe 20 is 121.8 MPa, the yield strength is 61.3 MPa, and the elongation at break is 36.2%.
  • the transition section 13 is formed by bending at the connection between the first heat dissipation part 11 and the second heat dissipation part 12.
  • the influence of the size relationship between the heat dissipation part 10 and the harmonica tube 20 on the mechanical properties of the heat dissipation element 100 is simulated.
  • the multiple sizes include: The thickness dimension D0 of the first heat sink 111, the second heat sink 112, the third heat sink 121 and the fourth heat sink 122, the width dimension L1 of the harmonica tube 20, the thickness dimension L2 of the harmonica tube 20, the thickness dimension D1 of the first wall 21, the thickness dimension D2 of the second wall 22, the thickness dimension D3 of the third wall 23, the thickness dimension D4 of the fourth wall 24, the thickness dimension D5 of the first reinforcing rib 251, the thickness dimension D6 of the second reinforcing rib 252, and the thickness dimension D7 of the third reinforcing rib 253.
  • the mechanical properties of the heat sink 100 provided in the embodiment of the present application are simulated.
  • the simulation conditions are: changing the value of a dimensional relationship, controlling other dimensions to take the optimal value, bending the second heat sink 12 relative to the first heat sink 11 to form a 90° angle (a certain process tolerance is allowed), and obtaining the stress value and plastic strain value of the transition section 13 formed by bending the heat sink 10, as well as the stress value and plastic strain value of the harmonica tube 20.
  • L1, L2, D0, D1, D2, D3, D4, D5, D6 and D7 were obtained through multiple tests.
  • L1, L2, D0, D1, D2, D3, D4, D5, D6 and D7 are 20mm, 3.2mm, 0.8mm, 0.6mm, 0.6mm, 0.4mm, 0.4mm, 0.5mm, 0.47mm and 0.5mm respectively
  • the stress value and plastic strain value of the transition section 13 formed by the bending of the heat sink 10 and the stress value and plastic strain value of the harmonica tube 20 are the smallest.
  • the stress value of the transition section 13 of the heat sink 10 is 90MPa
  • the plastic strain value is 10%
  • the stress value of the harmonica tube 20 is 92MPa
  • the plastic strain value is 15%.
  • the maximum stress of the transition section 13 formed by the bending of the heat dissipation portion 10 is 125MPa, which is less than the tensile strength of the heat dissipation portion 10 of 130MPa. Therefore, the heat dissipation portion 10 can bend uniformly under the action of stress without local plastic deformation caused by stress concentration.
  • the maximum plastic strain of the transition section 13 of the heat dissipation portion 10 is 29%, which is less than the elongation at break of the heat dissipation portion 10 of 30.6%. Therefore, the transition section 13 will not break under the action of stress.
  • the maximum stress of the bent harmonica tube 20 is 113Mpa, which is less than the tensile strength of the harmonica tube 20 of 121.8MPa. Therefore, the harmonica tube 20 can be bent uniformly under stress without local plastic deformation caused by stress concentration.
  • the maximum plastic strain of the bent harmonica tube 20 is 33%, which is less than the elongation at break of the harmonica tube 20 of 36.2%. Therefore, the harmonica tube 20 will not break under stress.
  • L1, D1, D2, D3, D4, D5, D6 and D7 are 20mm, 0.6mm, 0.6mm, 0.4mm. Under the conditions of 0.4mm, 0.5mm, 0.47mm and 0.5mm, 10% ⁇ D0/L2 ⁇ 40% is satisfied, and the maximum stress of the transition section 13 formed by the bending of the heat dissipation portion 10 is 124MPa, which is less than the tensile strength of the heat dissipation portion 10 of 130MPa. Therefore, the heat dissipation portion 10 can bend uniformly under the action of stress without local plastic deformation caused by stress concentration.
  • the maximum plastic strain of the transition section 13 of the heat dissipation portion 10 is 28%, which is less than the elongation at break of the heat dissipation portion 10 of 30.6%. Therefore, the transition section 13 will not break under the action of stress.
  • the maximum stress of the bent harmonica tube 20 is 114Mpa, which is less than the tensile strength of the harmonica tube 20 of 121.8MPa. Therefore, the harmonica tube 20 can be bent uniformly under stress without local plastic deformation caused by stress concentration.
  • the maximum plastic strain of the bent harmonica tube 20 is 31%, which is less than the elongation at break of the harmonica tube 20 of 36.2%. Therefore, under stress, the harmonica tube 20 will not break.
  • the heat dissipation part 10 and the harmonica tube 20 will not have stress concentration under the bending stress, resulting in local plastic deformation. Therefore, the connection between the first liquid inlet channel and the second liquid inlet channel, the connection between the first liquid outlet channel and the second liquid outlet channel at the location of the transition section 13, and the flow cross-sectional area of the liquid inlet channel and the liquid outlet channel are guaranteed, thereby ensuring the smooth flow of the cooling medium in the liquid inlet channel and the liquid outlet channel; avoiding local plastic deformation of the heat dissipation part 10 or the harmonica tube 20, reducing the flow cross-sectional area of the liquid inlet channel or the liquid outlet channel, thereby avoiding increasing the flow resistance of the cooling medium in the liquid inlet channel or the liquid outlet channel. In addition, the heat dissipation part 10 and the harmonica tube 20 will not break under the bending stress, thereby avoiding affecting the flow of the cooling medium in the liquid inlet channel or the liquid outlet channel.
  • the thickness dimension D5 of the first reinforcing rib 251 and the thickness dimension D7 of the third reinforcing rib 253 in the harmonica tube 20 are equal, which can ensure that the strength of the first reinforcing rib 251 and the third reinforcing rib 253 are equal, and avoid that when the harmonica tube 20 is stressed and bent, the strength of the first reinforcing rib 251 or the third reinforcing rib 253 is unequal, resulting in the compression of the weaker reinforcing rib 25.
  • the thickness dimension D6 of the second reinforcing rib 252 is smaller than the thickness dimension D5 of the first reinforcing rib 251 and the thickness dimension D7 of the third reinforcing rib 253, which can make the structural strength of the middle of the harmonica tube 20 lower, and facilitate the bending of the harmonica tube 20.
  • the thickness D6 of the second reinforcing rib 252 is smaller than the thickness D5 of the first reinforcing rib 251 and the thickness D7 of the third reinforcing rib 253, which can also save the material cost of the harmonica tube 20.
  • the heat sink 100 is connected to the battery module 200.
  • the first heat sink 11 of the heat sink 100 is located at the end of the battery module 200 along the length direction, and is simultaneously attached to the side surfaces of the four battery cell groups A.
  • the two second heat sinks 12 of the heat sink 100 are respectively located between the two middle battery cell groups A and the two adjacent outer battery cell groups A, and each second heat sink 12 is respectively attached to the surface of the battery cell groups A on both sides.
  • the number of the second heat dissipation parts 12 is two; in other embodiments, the number of the second heat dissipation parts 12 may also be one or more, as long as the second heat dissipation parts 12 are attached to the surface of the battery cell group A.
  • the battery cell module 200 and the heat sink 100 are installed in the box 300.
  • the battery cell module 200 is fixed to the bottom shell 320
  • the heat sink 100 is fixed to the bottom shell 320
  • the liquid inlet pipe 30 of the heat sink 100 is connected to the liquid inlet through hole 321 of the bottom shell 320
  • the liquid outlet pipe 40 of the heat sink 100 is connected to the liquid outlet through hole 322 of the bottom shell 320.
  • the cooling medium can be provided to the heat sink 100 from the liquid inlet through hole 321 of the bottom shell 320, and the cooling medium of the heat sink 100 can be discharged from the liquid outlet through hole 322 of the bottom shell 320.
  • cooling medium flowing in the heat sink 100 includes but is not limited to cooling water, and may also be other media, which is determined according to the specific usage.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Secondary Cells (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

本申请公开一种散热件、储能装置及用电设备，其中，散热件包括第一散热部和至少一个第二散热部，第一散热部和第二散热部连接且形成过渡段，散热件的进液通道和出液通道位于第一散热部和第二散热部内部，且经过过渡段；过渡段内部设有两个口琴管，两个口琴管具有流道腔，且分别与进液通道和出液通道连通；口琴管的第一壁和第二壁相对设置，口琴管的第三壁和第四壁相对设置；第一散热部包括第一散热板和第二散热板，第一散热板和第二散热板相对设置，第二散热部包括第三散热板和第四散热板，第三散热板和第四散热板相对设置，第一散热板与所述第三散热板连接，第二散热板与第四散热板连接。本申请的散热件可提高散热件对应过渡段的结构强度。

Description

散热件、储能装置及用电设备
本申请要求于2023年06月29日提交中国专利局、申请号为2023107857096、申请名称为“散热件、储能装置及用电设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及储能技术领域，尤其涉及一种散热件、储能装置及用电设备。
背景技术
储能装置一般包括电芯模组、散热板和箱体，箱体包括容纳腔，电芯模组和散热板位于箱体的容纳腔中。电芯模组由多个电芯堆叠而成。散热板中具有冷却通道，散热板贴合于电芯模组的外表面，用于给电芯模组散热。现有技术中，为了对电芯模组的多个表面进行散热，散热板通常需要弯折处理，但弯折处容易因为应力集中而产生局部变形甚至断裂，从而使散热板中的冷却介质难以从散热板的弯折处通过，影响散热板的散热效果。
发明内容
本申请提供一种散热件、储能装置及用电设备，可以提高散热件对应弯折处的结构强度，避免散热件经过弯折处理后发生局部变形或断裂。
第一方面，本申请提供一种散热件，包括第一散热部和至少一个第二散热部，所述第一散热部和所述至少一个第二散热部连接，所述第一散热部和所述至少一个第二散热部之间形成过渡段，所述散热件设有进液通道和出液通道，所述进液通道和所述出液通道位于所述第一散热部和至少一个所述第二散热部内部，且经过所述过渡段；
所述过渡段内部设有两个口琴管，两个所述口琴管分别位于所述进液通道和所述出液通道中，每个所述口琴管具有流道腔，所述位于所述进液通道中的所述口琴管的流道腔与所述进液通道连通，所述位于所述出液通道中的所述口琴管的流道腔与所述出液通道连通；
所述口琴管包括第一壁、第二壁、第三壁和第四壁，所述第一壁和所述第二壁沿所述散热件高度方向相对设置，所述第三壁和所述第四壁连接于所述第一壁和所述第二壁之间，且沿所述散热件厚度方向相对设置；
所述第一散热部包括第一散热板和第二散热板，所述第一散热板和所述第二散热板相对设置，所述第二散热部包括第三散热板和第四散热板，所述第三散热板和所述第四散热板相对设置，所述第一散热板与所述第三散热板连接，所述第二散热板与所述第四散热板连接。
第二方面，本申请提供一种储能装置，包括箱体、电芯模组和如上所述的散热件，所述箱体设有进液通孔和出液通孔，所述散热件和所述电芯模组容纳于所述箱体内部，所述散热件与所述电芯模组的表面贴合，所述进液通道与所述进液通孔连通，所述出液通道与所述出液通孔连通。
第三方面，本申请提供一种用电设备，包括如上所述的储能装置。
本申请通过在第一散热部和第二散热部的连接处设置口琴管，可以增强散热部对应第一散热部和第二散热部的连接处的结构强度，避免在弯折形成第一散热部和第二散热部之间的过渡段时，过渡段容易断裂。通过限定散热部和口琴管的尺寸关系，可以使散热部和口琴管满足强度要求，避免在弯折散热部和口琴管时，散热部的过渡段或口琴管中的应力过于集中导致过渡段或口琴管局部变形或者发生断裂。
附图说明
为了更清楚地说明本申请的技术方案，下面将对实施方式中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以如这些附图获得其他的附图。
图1为本申请实施例提供的储能装置的结构示意图；
图2为图1所示储能装置的分解结构示意图；
图3为图2所示储能装置的散热件的结构示意图；
图4为图3所示储能装置的散热件的第二角度的结构示意图；
图5为图3所示储能装置的散热件的第三角度结构示意图；
图6为图5所示散热件的M部分放大结构示意图；
图7为图5所示散热件的A-A方向截面结构示意图；
图8为图7所示散热件的N部分放大结构示意图；
图9为图8所示口琴管的尺寸标注示意图。
附图标记说明：
1000-储能装置，300-箱体，200-电芯模组，100-散热件，310-罩壳，320-底壳，321-进液
通孔，322-出液通孔，210-电芯，220-连接片，230-固定部，A-电芯组，10-散热部，30-进液管，40-出液管，11-第一散热部，12-第二散热部，111-第一散热板，112-第二散热板，113-进液口，114-出液口，121-第三散热板，122-第四散热板，13-过渡段，131-第一过渡段，132-第二过渡段，20-口琴管，21-第一壁，22-第二壁，23-第三壁，24-第四壁，25-加强筋，251第一加强筋，252-第二加强筋，253-第三加强筋，26-流道腔。
具体实施方式
由于人们所需要的能源都具有很强的时间性和空间性，为了合理利用能源并提高能量的利用率，需要通过一种介质或者设备，把一种能量形式用同一种或者转换成另外一种能量形式存储起来，基于未来应用需要再以特定能量形式释放出来。众所周知，要实现碳中和的大目标，目前绿色电能的产生主要途径是发展光伏、风电等绿色能源来替代化石能源。目前绿色电能的产生普遍依赖于光伏、风电、水势等，而风能和太阳能等普遍存在间歇性强、波动性大的问题，会造成电网不稳定，用电高峰电不够，用电低谷电太多，不稳定的电压还会对电力造成损害，因此可能因为用电需求不足或电网接纳能力不足，引发“弃风弃光”问题，要解决这些问题须依赖储能。即将电能通过物理或者化学的手段转化为其他形式的能量存储起来，在需要的时候将能量转化为电能释放出来，简单来说，储能就类似一个大型“充电宝”，在光伏、风能充足时，将电能储存起来，在需要时释放储能的电力。
本申请提供一种储能装置，储能装置内设有一组化学电池，主要是利用化学电池内的化学元素做储能介质，充放电过程伴随储能介质的化学反应或者变化，简单说就是把风能和太阳能产生的电能存在化学电池中，在外部电能的使用达到高峰时再将存储的电量释放出来使用，或者转移给电量紧缺的地方再使用。
本申请提供的储能装置应用场景较为广泛，包括(风光)发电侧储能、电网侧储能、基站侧储能以及用户侧储能等方面。储能装置通常以储能集装箱、中小型储能电柜、户用小型储能箱等形式使用，储能集装箱、中小型储能电柜、户用小型储能箱等设备中包含储能装置。
需要说明的是，上述储能集装箱、中小型储能电柜、户用小型储能箱等包含储能装置的设备可以理解为是用电设备。
储能装置1000的数量可以为数个，数个储能装置1000相互串联或并联。本实施例中，“数个”是指两个及两个以上。
可以理解的是，储能装置1000可包括但不限于单体电池、电芯模组、电池包、电池系统等。本申请实施例提供的储能装置1000的实际应用形态可以为但不限于为所列举产品，还可以是其他应用形态，本申请实施例不对储能装置1000的应用形态做严格限制。本申请实施例仅以储能装置1000为多芯电池为例进行说明。
请参阅图1和图2，本实施例中，储能装置1000包括箱体300、电芯模组200和散热件100。箱体300包括罩壳310和底壳320，底壳320设有进液通孔321和出液通孔322。电芯模组200和散热件100固定于底壳320，罩壳310罩设于电芯模组200和散热件100，且与底壳320固定连接，以将电芯模组200和散热件100封闭于箱体300内。
为方便描述，定义图2所示散热件100的长度方向为X轴方向，散热件100的宽度方向为Y轴方向，散热件100的高度方向为Z轴方向，X轴方向、Y轴方向和Z轴方向两两相互垂直。本申请实施例描述所提及的“上”、“下”等方位用词是依据说明书附图2所示方位进行的描述，以朝向Z轴正方向为“上”，以朝向Z轴负方向为“下”，其并不形成对散热件100于实际应用场景中的限定。以下文中所用到的“相同”、“相等”或者“平行”均允许有一定的公差存在。
本实施例中，电芯模组200包括多个电芯210、多个连接片220和固定部230。多个电芯210分为四个电芯组A，每个电芯组A的电芯210数量相等，且沿电芯模组200长度方向(X轴方向)依次排列。四个电芯组A沿电芯模组200宽度方向(Y轴方向)并排设置。多个连接片220将多个电芯210相互连接，固定部230设置在四个电芯组A的外周，用于紧固连接四个电芯组A，将四个电芯组A连接为一体式结构。具体的，固定部230为塑钢带。在其他实施例中，多个电芯210也可以分为一个、两个或者多个电芯组A；固定部230也可以是固定板；具体根据实际使用需求确定，本申请不对此进行具体限制。
请参阅图3至图5，本申请实施例提供一种散热件100。本实施例中，散热件100包括散热部10、口琴管、进液管30和出液管40。口琴管位于散热部10的内部，进液管30和出液管40与散热部10连接。
散热部10包括第一散热部11和至少一个第二散热部12。第一散热部11和至少一个第二散热部12连接。具体的，本实施例中，第二散热部12的数量为两个。两个第二散热部12分别与第一散热部11沿长度方向的相对两端连接，且两个第二散热部12均与第一散热部11呈夹角设置。
需要说明的是，在其他实施例中，第二散热部12的数量也可以为一个或者多个，本申请不对第二散热部12的数量进行具体限制。
本实施例中，第一散热部11包括第一散热板111和第二散热板112。第一散热板111设有进液口113和出液口114，进液口113贯穿第一散热板111沿厚度方向背向设置的两个表面，出液口114贯穿第一散热板111沿厚度方向背向设置的两个表面。沿第一散热部11高度方向(Z轴方向)，进液口113和出液口114间隔设置。沿第一散热部11厚度方向，第一散热板 111和第二散热板112相对设置，且第一散热板111和第二散热板112之间形成第一进液通道和第一出液通道。第一进液通道和第一出液通道沿第一散热部11长度方向延伸，且第一进液通道和第一出液通道沿第一散热部11高度方向间隔设置。第一进液通道与进液口113连通，第一出液通道与出液口114连通。第一散热板111和第二散热板112的厚度尺寸均为D0。
第二散热部12包括第三散热板121和第四散热板122，沿第二散热部12厚度方向，第三散热板121和第四散热板122相对设置，且第三散热板121和第四散热板122之间形成第二进液通道和第二出液通道。第二进液通道和第二出液通道沿第二散热部12长度方向延伸，且第二进液通道和第二出液通道沿第二散热部12高度方向(Z轴方向)间隔设置，且第二进液通道和第二出液通道连通。第三散热板121和第四散热板122的厚度尺寸均为D0，且第三散热板121和第四散热板122的厚度尺寸与第一散热板111、第二散热板112的厚度尺寸相等。
第一散热部11和至少一个第二散热部12连接，第一散热部11和至少一个第二散热部12之间形成过渡段13。具体的，本实施例中，两个第二散热部12分别连接于第一散热部11沿长度方向的相对两端，沿散热件100宽度方向(Y轴方向)，两个第二散热部12相对设置；第一散热部11连接于两个第二散热部12之间。两个第二散热部12与第一散热部11垂直(允许有一定的工艺公差)。具体的，第一散热板111沿第一散热部11长度方向的相对两端分别与两个第三散热板121连接，且第一散热板111和第三散热板121呈夹角设置，且夹角为弧形；第二散热板112沿第一散热部11长度方向的相对两端分别与两个第四散热板122连接，且第二散热板112和第四散热板122呈夹角设置，且夹角为弧形。可以理解，散热部10整体相当于呈“U”形，第一散热部11和两个第二散热部12的连接处分别形成两个过渡段13，具体为第一过渡段131和第二过渡段132，第一过渡段131和第二过渡段132均为弧形结构。第一过渡段131和第二过渡段132均为第一散热部11的一部分，且分别位于第一散热部11沿长度方向的相对两端。两个第二散热部12分别通过第一过渡段131和第二过渡段132与第一散热部11连接。第一进液通道沿第一散热部11长度方向的相对两端分别和两个第二进液通道连通，以形成进液通道；第一出液通道沿第一散热部11长度方向的相对两端分别和两个第二出液通道连通，以形成出液通道；两个第二进液通道背向第一进液通道的端部分别与两个第二出液通道背向第一出液通道的端部连通。进液通道和出液通道位于第一散热部11和至少一个第二散热部12内部，具体的，本实施例中，进液通道和出液通道位于第一散热部11和两个第二散热部12内部。进液通道和出液通道经过第一散热部11和第二散热部12之间的过渡段13。
需要说明的是，本实施例中，第一散热部11和两个第二散热部12为一体成型的金属结构件；两个第二散热部12相对第一散热部11分别弯折形成“U”形的散热部10，且分别形成第一过渡段131和第二过渡段132；可以理解，第一过渡段131和第二过渡段132分别为第一散热部11的一部分，且分别位于第一散热部11沿长度方向的相对两端。两个过渡段13为两个第二散热部12相对第一散热部11弯折后形成，第一过渡段131和第二过渡段132分别位于两个第二散热部12与第一散热部11的连接处，两个第二散热部12分别通过第一过渡段131和第二过渡段132与第一散热部11连接。
进液管30为两端开口的空心管道，进液管30的一端与进液口113连接，另一端与底壳320的进液通孔321连接。出液管40为两端开口的空心管道，出液管40的一端与出液口114连接，另一端与底壳320的出液通孔322连接。
请参阅图5至图9，本实施例中，口琴管20为弧形结构。口琴管20包括第一壁21、第二壁22、第三壁23和第四壁24，第一壁21和第二壁22沿口琴管20宽度方向相对设置，第 三壁23和第四壁24沿口琴管20厚度方向相对设置，且连接于第一壁21和第二壁22之间。第一壁21、第二壁22、第三壁23和第四壁24围成口琴管20的流道腔26。口琴管20还包括数个加强筋25，沿口琴管20宽度方向，数个加强筋25间隔设置于第一壁21和第二壁22之间，且连接第三壁23和第四壁24。具体的，数个加强筋25的数量为三个，数个加强筋25包括第一加强筋251、第二加强筋252和第三加强筋253。沿口琴管20宽度方向，第一加强筋251、第二加强筋252和第三加强筋253依次间隔排列；第二加强筋252位于口琴管20的中间位置，第一加强筋251和第三加强筋253分别位于第二加强筋252的相对两侧，且与第二加强筋252间隔设置。
具体的，本实施例中，口琴管20的第一壁21的厚度尺寸为D1，第二壁22的厚度尺寸为D2，第三壁23的厚度尺寸为D3，第四壁24的厚度尺寸为D4。第一加强筋251的厚度尺寸为D5，第二加强筋252的厚度尺寸为D6，第三加强筋253的厚度尺寸为D7。沿口琴管20宽度方向，第一壁21和第二壁22背向设置的两个表面之间的距离为L1，即，口琴管20的宽度尺寸为L1。沿口琴管20厚度方向，第三壁23和第四壁24背向设置的两个表面之间的距离为L2，即，口琴管20的厚度尺寸为L2。
本实施例中，口琴管20的数量为四个。每个过渡段13内部设有两个口琴管20，两个口琴管20分别位于每个过渡段13内部的进液通道和出液通道。口琴管20的第一壁21和第二壁22沿散热件100高度方向(Z轴方向)相对设置，口琴管20的第三壁23和第四壁24连接于第一壁21和第二壁22之间，且沿散热件100厚度方向相对设置。其中两个口琴管20位于第一过渡段131内部，具体的，其中一个口琴管20位于第一过渡段131内部的进液通道，且该口琴管20的流道腔26与进液通道连通；另外一个口琴管20位于第一过渡段131内部的出液通道，且该口琴管20的流道腔26与出液通道连通。另外两个口琴管20位于第二过渡段132内部，具体的，其中一个口琴管20位于第二过渡段132内部的进液通道，且该口琴管20的流道腔26与进液通道连通；另外一个口琴管20位于第二过渡段132内部的出液通道，且该口琴管20的流道腔26与出液通道连通。
请结合参阅图4和图7，本实施例中，冷却介质进入散热件100的流通路径为：进液管30→进液口113→第一进液通道→两个口琴管20→两个第二进液通道→两个第二出液通道→两个口琴管20→第一出液通道→出液口114→出液管40。
可以理解，通过在第一散热部11和两个第二散热部12的连接处分别设置口琴管20，可以增强散热部10对应第一散热部11和两个第二散热部12的连接处的结构强度，即可以增强散热部10对应两个过渡段13的位置的结构强度，进而避免在弯折形成第一过渡段131和第二过渡段132时，第一过渡段131或第二过渡段132容易断裂。
第一散热部11的抗拉强度大于或者等于130Mpa(兆帕)，第一散热部11的屈服强度小于或者等于57.6MPa，第一散热部11的断裂伸长率大于或者等于30.6％。第二散热部12的抗拉强度大于或者等于130MPa，第二散热部12的屈服强度小于或者等于57.6MPa，第二散热部12的断裂伸长率大于或者等于30.6％。具体的，本实施例中，第一散热部11的抗拉强度为130MPa，屈服强度为57.6MPa，断裂伸长率为30.6％；第二散热部12的抗拉强度为130MPa，屈服强度为57.6MPa，断裂伸长率为30.6％。口琴管20的抗拉强度为121.8MPa，屈服强度为61.3MPa，断裂伸长率为36.2％。
本实施例中，在第一散热部11和第二散热部12的连接处弯折形成过渡段13，为了保证过渡段13和过渡段13内部的口琴管20均匀弯曲，且不会发生断裂，对散热部10和口琴管20的多个尺寸之间的大小关系对散热件100的力学性能的影响进行仿真。多个尺寸包括：第 一散热板111、第二散热板112、第三散热板121和第四散热板122的厚度尺寸D0、口琴管20的宽度尺寸L1、口琴管20的厚度尺寸L2、第一壁21的厚度尺寸D1、第二壁22的厚度尺寸D2、第三壁23的厚度尺寸D3、第四壁24的厚度尺寸D4、第一加强筋251的厚度尺寸D5、第二加强筋252的厚度尺寸D6、第三加强筋253的厚度尺寸D7。
对本申请实施例提供的散热件100的力学性能进行仿真。具体的，仿真条件为：改变一个尺寸关系的数值，控制其他尺寸取最优值，将第二散热部12相对第一散热部11弯折形成90°夹角(允许有一定工艺公差)，获取散热部10弯折形成的过渡段13的应力值和塑性应变值，以及口琴管20的应力值和塑性应变值。
需要说明的是，在对散热件100的力学性能进行仿真前，经过多次试验获得L1、L2、D0、D1、D2、D3、D4、D5、D6和D7的最优值。当L1、L2、D0、D1、D2、D3、D4、D5、D6和D7分别为20mm、3.2mm、0.8mm、0.6mm、0.6mm、0.4mm、0.4mm、0.5mm、0.47mm和0.5mm时，散热部10弯折形成的过渡段13的应力值和塑性应变值、以及口琴管20的应力值和塑性应变值最小。具体的，散热部10的过渡段13的应力值为90MPa，塑性应变值为10％；口琴管20的应力值为92MPa，塑性应变值为15％。
表1：本申请实施例的散热件的力学性能仿真结果
根据本申请实施例提供的散热件100的力学性能仿真结果可知，D0、D1、D2、D3、D4、D5、D6和D7分别取0.8mm、0.6mm、0.6mm、0.4mm、0.4mm、0.5mm、0.47mm和0.5mm条件下，当5％<L2/L1<32％时，散热部10弯折形成的过渡段13的最大应力为125MPa，小于散热部10的抗拉强度130MPa，因此，散热部10在应力作用下可以发生均匀弯曲，而不会发生应力集中导致的局部塑性变形；散热部10的过渡段13的最大塑性应变为29％，小于散热部10的断裂伸长率30.6％，因此，在应力作用下，过渡段13不会发生断裂。弯折的口琴管20的最大应力为113Mpa，小于口琴管20的抗拉强度121.8MPa，因此，口琴管20在应力作用下可以发生均匀弯曲，而不会发生应力集中导致的局部塑性变形；弯折的口琴管20的最大塑性应变为33％，小于口琴管20的断裂伸长率36.2％，因此，在应力作用下，口琴管20不会发生断裂。L1、D1、D2、D3、D4、D5、D6和D7分别取20mm、0.6mm、0.6mm、0.4mm、 0.4mm、0.5mm、0.47mm和0.5mm条件下，满足10％<D0/L2<40％，散热部10弯折形成的过渡段13的最大应力为124MPa，小于散热部10的抗拉强度130MPa，因此，散热部10在应力作用下可以发生均匀弯曲，而不会发生应力集中导致的局部塑性变形；散热部10的过渡段13的最大塑性应变为28％，小于散热部10的断裂伸长率30.6％，因此，在应力作用下，过渡段13不会发生断裂。弯折的口琴管20的最大应力为114Mpa，小于口琴管20的抗拉强度121.8MPa，因此，口琴管20在应力作用下可以发生均匀弯曲，而不会发生应力集中导致的局部塑性变形；弯折的口琴管20的最大塑性应变为31％，小于口琴管20的断裂伸长率36.2％，因此，在应力作用下，口琴管20不会发生断裂。相应的，当L1、L2、D3、D4、D5、D6和D7均取最优值时，满足40％D0<D1＝D2<80％D0，则散热部10的过渡段13和口琴管20可以均匀弯曲，且不会断裂。当L1、L2、D0、D2、D5、D6和D7均取最优值时，满足60％D1<D3≤D4<90％D1，则散热部10的过渡段13和口琴管20可以均匀弯曲，且不会断裂。当L1、L2、D0、D2、D3、D4和D6均取最优值时，满足80％D1<D5＝D7<90％D1，则散热部10的过渡段13和口琴管20可以均匀弯曲，且不会断裂。当L1、L2、D0、D2、D3、D4、D5和D7均取最优值时，满足60％D1<D6<80％D1，则散热部10的过渡段13和口琴管20可以均匀弯曲，且不会断裂。此外，从仿真效果图中可知，在满足上述关系式的条件下，口琴管20的数个加强筋25弯折不会影响流道腔26。
可以理解，散热部10和口琴管20在弯曲应力作用下均不会发生应力集中导致局部塑性变形，因而，保证了过渡段13所在位置的第一进液通道和第二进液通道的连通，第一出液通道和第二出液通道的连通，以及保证了进液通道和出液通道的流通截面积，进而保证了冷却介质在进液通道和出液通道中的顺利流通；避免散热部10或口琴管20的局部塑性变形，使进液通道或出液通道的流通截面积减小，进而避免增大冷却介质在进液通道或出液通道中的流通阻力。此外，散热部10和口琴管20在弯曲应力作用下均不会发生断裂，避免影响冷却介质在进液通道或出液通道中的流通。
此外，口琴管20中的第一加强筋251的厚度尺寸D5和第三加强筋253的厚度尺寸D7相等，可以保证第一加强筋251和第三加强筋253的强度相等，避免在对口琴管20施加应力使口琴管20受力弯曲时，第一加强筋251或第三加强筋253的强度不相等，导致向强度较弱的加强筋25压溃。第二加强筋252的厚度尺寸D6小于第一加强筋251的厚度尺寸D5、第三加强筋253的厚度尺寸D7，可以使口琴管20中间的结构强度较低，便于口琴管20弯折。并且，第二加强筋252的厚度D6小于第一加强筋251的厚度D5、第三加强筋253的厚度D7，也可以节约口琴管20的材料成本。
请继续参阅图2，本实施例中，散热件100与电芯模组200连接。具体的，散热件100的第一散热部11位于电芯模组200沿长度方向的端部，且同时与四个电芯组A的侧面贴合，散热件100的两个第二散热部12分别位于中间两个电芯组A与相邻的外侧的两个电芯组A之间，且每个第二散热部12分别与两侧的电芯组A的表面贴合。
需要说明的是，本实施例中，第二散热部12的数量为两个；在其他实施例中，第二散热部12的数量也可以为一个或者多个，只需使第二散热部12贴合于电芯组A的表面即可。
本实施例中，电芯模组200和散热件100安装于箱体300内。具体的，电芯模组200固定于底壳320，散热件100固定于底壳320，且散热件100的进液管30与底壳320的进液通孔321连通，散热件100的出液管40与底壳320的出液通孔322连通。从底壳320的进液通孔321可以给散热件100提供冷却介质，从底壳320的出液通孔322可以使散热件100的冷却介质排出。
需要说明的是，散热件100中流通的冷却介质包括但不限于为冷却水，还可以是其他介质，具体根据使用情况确定。
以上对本申请实施例进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的方法及其核心思想；同时，对于本领域的一般技术人员，依据本申请的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本申请的限制。

Claims (11)

  1. 一种散热件，其中，包括第一散热部和至少一个第二散热部，所述第一散热部和所述至少一个第二散热部连接，所述第一散热部和所述至少一个第二散热部之间形成过渡段，所述散热件设有进液通道和出液通道，所述进液通道和所述出液通道位于所述第一散热部和至少一个所述第二散热部内部，且经过所述过渡段；
    所述过渡段内部设有两个口琴管，两个所述口琴管分别位于所述进液通道和所述出液通道中，每个所述口琴管具有流道腔，所述位于所述进液通道中的所述口琴管的流道腔与所述进液通道连通，所述位于所述出液通道中的所述口琴管的流道腔与所述出液通道连通；
    所述口琴管包括第一壁、第二壁、第三壁和第四壁，所述第一壁和所述第二壁沿所述散热件高度方向相对设置，所述第三壁和所述第四壁连接于所述第一壁和所述第二壁之间，且沿所述散热件厚度方向相对设置；
    所述第一散热部包括第一散热板和第二散热板，所述第一散热板和所述第二散热板相对设置，所述第二散热部包括第三散热板和第四散热板，所述第三散热板和所述第四散热板相对设置，所述第一散热板与所述第三散热板连接，所述第二散热板与所述第四散热板连接。
  2. 根据权利要求1所述的散热件，其中，所述第一散热板、所述第二散热板、所述第三散热板和所述第四散热板的厚度尺寸相等，且均为D0，所述第一壁的厚度尺寸为D1，所述第二壁的厚度尺寸为D2，D0、D1和D2满足关系式：40％D0<D1＝D2<80％D0。
  3. 根据权利要求1所述的散热件，其中，所述口琴管的宽度尺寸为L1，所述口琴管的厚度尺寸为L2，L1和L2满足关系式：5％<L2/L1<32％。
  4. 根据权利要求1所述的散热件，其中，所述第一散热板、所述第二散热板、所述第三散热板和所述第四散热板的厚度尺寸相等，且均为D0，所述口琴管的厚度尺寸为L2，D0和L2满足关系式：10％＜D0/L2＜40％。
  5. 根据权利要求1所述的散热件，其中，所述第一壁的厚度尺寸为D1，所述第三壁的厚度尺寸为D3，所述第四壁的厚度尺寸为D4，D1、D3和D4满足关系式：60％D1<D3≤D4<90％D1。
  6. 根据权利要求1-5任一项所述的散热件，其中，所述口琴管还包括第一加强筋、第二加强筋和第三加强筋，所述第一加强筋、所述第二加强筋和所述第三加强筋位于所述第三壁和所述第四壁之间，且沿所述口琴管宽度方向，所述第一加强筋、所述第二加强筋和所述第三加强筋依次间隔排列；
    所述第一加强筋的厚度尺寸为D5，所述第二加强筋的厚度尺寸为D6，所述第三加强筋的厚度尺寸为D7，D5、D6和D7满足关系式：D6＜D5＝D7。
  7. 根据权利要求6所述的散热件，其中，所述第一壁的厚度尺寸为D1，所述第一加强筋的厚度尺寸D5、所述第三加强筋的厚度尺寸D7与所述第一壁的厚度尺寸D1满足关系式：80％D1<D5＝D7<90％D1。
  8. 根据权利要求6所述的散热件，其中，所述第一壁的厚度尺寸为D1，所述第二加强筋的厚度尺寸D6与所述第一壁的厚度尺寸D1满足关系式：60％D1<D6<80％D1。
  9. 根据权利要求6所述的散热件，其中，所述第二散热部的数量为两个，两个所述第二散热部沿所述散热件宽度方向相对设置，所述第一散热部连接于两个所述第二散热部之间。
  10. 一种储能装置，其中，包括箱体、电芯模组和如权利要求1-9任一项所述的散热 件，所述箱体设有进液通孔和出液通孔，所述散热件和所述电芯模组容纳于所述箱体内部，所述散热件与所述电芯模组的表面贴合，所述进液通道与所述进液通孔连通，所述出液通道与所述出液通孔连通。
  11. 一种用电设备，其中，包括如权利要求10所述的储能装置。
PCT/CN2024/080548 2023-06-29 2024-03-07 散热件、储能装置及用电设备 Ceased WO2025001289A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202310785709.6 2023-06-29
CN202310785709.6A CN116722258A (zh) 2023-06-29 2023-06-29 散热件、储能装置及用电设备

Publications (1)

Publication Number Publication Date
WO2025001289A1 true WO2025001289A1 (zh) 2025-01-02

Family

ID=87866019

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2024/080548 Ceased WO2025001289A1 (zh) 2023-06-29 2024-03-07 散热件、储能装置及用电设备

Country Status (4)

Country Link
US (1) US20250007041A1 (zh)
EP (1) EP4485622B1 (zh)
CN (1) CN116722258A (zh)
WO (1) WO2025001289A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116722258A (zh) * 2023-06-29 2023-09-08 厦门海辰储能科技股份有限公司 散热件、储能装置及用电设备
EP4692713A1 (en) * 2024-08-06 2026-02-11 Eve Energy Co., Ltd. Liquid cooling plate and battery pack

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108183285A (zh) * 2018-03-23 2018-06-19 华霆（合肥）动力技术有限公司 口琴管及电池模组系统
CN209001074U (zh) * 2018-10-24 2019-06-18 深圳市赛尔盈电子有限公司 口琴管式散热结构
CN217848100U (zh) * 2022-07-29 2022-11-18 厦门海辰储能科技股份有限公司 液冷板及电池包
CN115472968A (zh) * 2022-09-29 2022-12-13 厦门海辰储能科技股份有限公司 加强组件、液冷板、液冷板的制造方法及储能装置
CN218498188U (zh) * 2022-10-11 2023-02-17 欣旺达电动汽车电池有限公司 一种电池包
CN115719842A (zh) * 2022-11-29 2023-02-28 厦门海辰储能科技股份有限公司 一种电池包及用电设备
CN116722258A (zh) * 2023-06-29 2023-09-08 厦门海辰储能科技股份有限公司 散热件、储能装置及用电设备

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108183285A (zh) * 2018-03-23 2018-06-19 华霆（合肥）动力技术有限公司 口琴管及电池模组系统
CN209001074U (zh) * 2018-10-24 2019-06-18 深圳市赛尔盈电子有限公司 口琴管式散热结构
CN217848100U (zh) * 2022-07-29 2022-11-18 厦门海辰储能科技股份有限公司 液冷板及电池包
CN115472968A (zh) * 2022-09-29 2022-12-13 厦门海辰储能科技股份有限公司 加强组件、液冷板、液冷板的制造方法及储能装置
CN218498188U (zh) * 2022-10-11 2023-02-17 欣旺达电动汽车电池有限公司 一种电池包
CN115719842A (zh) * 2022-11-29 2023-02-28 厦门海辰储能科技股份有限公司 一种电池包及用电设备
CN116722258A (zh) * 2023-06-29 2023-09-08 厦门海辰储能科技股份有限公司 散热件、储能装置及用电设备

Also Published As

Publication number Publication date
CN116722258A (zh) 2023-09-08
EP4485622A1 (en) 2025-01-01
EP4485622B1 (en) 2026-04-01
US20250007041A1 (en) 2025-01-02

Similar Documents

Publication Publication Date Title
WO2025001289A1 (zh) 散热件、储能装置及用电设备
CN209447945U (zh) 一种电池包
CN209607884U (zh) 电池模组
CN205429045U (zh) 一种电池模组
CN107710449A (zh) 夹持部件和使用该夹持部件的电池模块
CN107195832A (zh) 一种软包电池模组固定结构
CN116581429A (zh) 储能模组和用电设备
CN108155311A (zh) 一种锂离子动力电池液冷模组
CN116759760B (zh) 端盖组件、储能装置及储能系统
CN220341303U (zh) 电池模组及电池包
CN209374617U (zh) 一种电池模组及其隔热垫片
CN205645946U (zh) 电池模块
CN116845444B (zh) 端盖组件、储能装置及用电设备
CN218548706U (zh) 电池包
CN201758157U (zh) 一种带冷却通道的电池模块
CN116365175B (zh) 储能装置和用电设备
CN219017815U (zh) 端板组件、电池模组及电池包
CN219498095U (zh) 软包电池模组及储能装置
CN216389638U (zh) 一种锂离子电池模块
CN222530525U (zh) 一种电池模组结构
CN207800712U (zh) 电池芯组件及电池热管理系统
CN115693008A (zh) 电池包
CN220774562U (zh) 一种电池箱体及储能设备
CN221766842U (zh) 一种储能电池的散热组件
CN219658896U (zh) 一种方形电池模组挡板结构

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24829942

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE