WO2013003989A1 - 一种车用动力电池箱的热管控温系统 - Google Patents

一种车用动力电池箱的热管控温系统 Download PDF

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Publication number
WO2013003989A1
WO2013003989A1 PCT/CN2011/001812 CN2011001812W WO2013003989A1 WO 2013003989 A1 WO2013003989 A1 WO 2013003989A1 CN 2011001812 W CN2011001812 W CN 2011001812W WO 2013003989 A1 WO2013003989 A1 WO 2013003989A1
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WO
WIPO (PCT)
Prior art keywords
battery
heat pipe
heat
box
control system
Prior art date
Application number
PCT/CN2011/001812
Other languages
English (en)
French (fr)
Inventor
王立涛
李翔
余英
李武峰
严辉
魏刚
Original Assignee
中国电力科学研究院
国家电网公司
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Application filed by 中国电力科学研究院, 国家电网公司 filed Critical 中国电力科学研究院
Publication of WO2013003989A1 publication Critical patent/WO2013003989A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/02—Supplying electric power to auxiliary equipment of vehicles to electric heating circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
    • 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
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—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
    • H01M10/6561—Gases
    • H01M10/6563—Gases with forced flow, e.g. by blowers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271—Lids or covers for the racks or secondary casings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • B60L2240/36—Temperature of vehicle components or parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/545—Temperature
    • 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
    • H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the invention relates to the technical field of electric vehicles, and more particularly to a heat pipe temperature control system for a power battery box for a vehicle.
  • BACKGROUND OF THE INVENTION One of the core technologies on electric vehicles is the energy storage and supply system.
  • the battery heat dissipation and temperature uniformity of the vehicle battery pack have a significant effect on improving the performance and safety of the battery pack.
  • the battery's operating temperature is controlled between 20 and 45 , which is good for both the battery's electrical performance and safety.
  • the heat pipe is a kind of heat transfer element, which makes full use of the principle of heat conduction and the principle of phase change heat transfer.
  • the heat of the heat generating object is quickly transmitted to the heat source through the heat pipe, and the heat conduction capacity exceeds the heat conductivity of any known metal.
  • the heat pipe technology has been Widely used in spacecraft, nuclear reactors, electronic device cooling and other fields.
  • the optimal operating temperature range of the lithium battery is narrow, the current lithium battery in the electric vehicle has a poor temperature environment in the vehicle, and the battery in the summer is poor in heat dissipation, resulting in a decrease in capacity and power, which easily leads to a safety accident; Under the circumstance, the discharge performance of the currently used electric vehicle battery is very serious, and even the car cannot drive.
  • the object of the present invention is to provide a heat pipe temperature control system for a power battery box for a vehicle, which can heat the battery in the cold winter in the north, and can dissipate heat in the hot weather in summer, so that the battery pack has a good working environment. , plays an important role in improving the performance and safety of the battery pack.
  • the present invention adopts the following technical solutions:
  • the invention provides a heat pipe temperature control system for a power battery box for a vehicle, the heat pipe temperature control system comprising a battery outer box, a battery inner box and a plurality of battery cells disposed in the inner battery box, the battery unit and the battery unit
  • the heat dissipation heat pipe or the heating heat pipe is tightly sandwiched between the battery cells, and the heat dissipation heat pipe or the heating heat pipe is disposed between the two;
  • the outer casing of the battery is provided with an outer box insulation board, and the top of the battery inner box body is provided with The inner box cover, the remaining part of the inner box of the battery is provided with an inner box insulation board, and a gap is left between the inner box cover and the top of the battery unit, and the inner box insulation board and a gap is left between the battery cells, a heating device is disposed on a side of the bottom of the battery inner box near the bottom of the battery cell, and a gap is left between the heating device and the bottom of the battery cell;
  • the top of the battery cell
  • the lower end of the heating heat pipe is lower than the bottom of the battery cell, and a portion of the heating heat pipe that is grown at a lower end is in close contact with the heating device; and a heat dissipating fan is disposed on the battery outer casing.
  • the heat dissipation heat pipe and the heating heat pipe are sheet heat pipes, and the surface of the sheet heat pipe is provided with an insulating coating.
  • the heat dissipation heat pipe is a heat pipe that dissipates heat inside the battery cell, and the heat pipe transmits external heat to A heat pipe inside the battery cell.
  • the inner box cover at the top of the inner box of the battery is an insulation board or a dispersion board.
  • the battery inner box is provided with a heat dissipation hole.
  • the upper end portion of the heat dissipation heat pipe is disposed in a gap between the inner box cover and the top of the battery unit.
  • a portion of the lower end of the heating heat pipe that extends from the bottom of the battery cell is disposed between the top of the heating device and the bottom of the battery cell. Leave the gap inside.
  • the outer box insulation board, the inner box cover, and the inner box insulation board are all detachably mounted.
  • the heat dissipation fan is mounted on a battery outer box near a top portion, and the heat dissipation fan is provided with a damper.
  • the battery box uses heat pipe technology with extremely high heat transfer efficiency to dissipate heat or heat the battery box, solves the problem that the power battery is greatly affected by temperature, and cooperates with the detachable double insulation layer of the box to provide a good temperature for the battery.
  • the environment greatly improves the performance and safety of the vehicle power battery;
  • the heat pipe inside the battery adopts the most advanced sheet heat pipe technology, which can be more closely attached to the battery cell. Internally, the heat transfer area is larger, and the heat transfer effect is much higher than the existing battery box heat transfer technology;
  • the heat dissipation heat pipe and the heating heat pipe are spaced apart inside the battery, and the heat dissipation and heating do not affect each other.
  • the surface of the heat pipe adopts advanced insulation coating to solve the insulation requirements inside the battery
  • FIG. 1 is a cross-sectional view of a battery case of a heat pipe temperature control system for a power battery box for a vehicle;
  • FIG. 2 is a schematic view showing a heating state of a heat pipe temperature control system of a power battery box for a vehicle
  • FIG. 3 is a schematic diagram of a heat dissipation state of a heat pipe temperature control system of a power battery box for a vehicle;
  • FIG. 4 is a schematic view of a battery inner box with a top inner box cover removed in the present invention
  • the heat pipe temperature control system of the vehicle power battery box includes the battery outer case 2 and the battery inner case 1 disposed inside the battery outer case 2, and the battery inner case 1 is opened.
  • the battery inner box 1 is internally provided with a plurality of battery cells 6, and each of the battery cells 6 and the battery cells 6 are closely clamped with a heat dissipation heat pipe 5 or a heating heat pipe 7, in this case, each battery Only one heat dissipation heat pipe 5 or one heating heat pipe 7 is sandwiched between the monomer 6 and the battery cell 6, and the heat dissipation heat pipe 5 or the heating heat pipe 7 is disposed between the phases, and the heat dissipation heat pipe 5 and the heating heat pipe 7 are sheet heat pipes, and the sheet heat pipe surface is
  • the heat-dissipating heat pipe 5 is a heat pipe for dissipating heat inside the battery cell 6, and the heat pipe 7 is a heat pipe for transferring external heat to the inside of the battery cell 6
  • a gap is left between the top of the heating device 8 and the bottom of the battery cell 6; the upper end of the heat dissipation heat pipe 5 is higher than the top of the battery cell 6, the lower end of the heat dissipation heat pipe 5 is higher than the bottom of the battery cell 6, and the upper end of the heat dissipation heat pipe 5 is high.
  • the portion that is out is in close contact with the inner box cover 4, and the upper portion of the upper end of the heat dissipation heat pipe 5 in this example is disposed just in the gap between the top inner cover plate 4 and the top of the battery unit 6, and the heat dissipation heat pipe 5
  • the upper end portion is bent at an angle to the other portion thereof, and the angle is equal to the bending angle of the portion of the battery unit 6 that is in contact with the heat dissipation heat pipe 5, and the heat dissipation heat pipe 5 is approximately L.
  • the purpose of the font is to make the contact area of the battery unit 6 and the heat dissipation heat pipe 5 larger, and the contact area between the heat dissipation heat pipe 5 and the inner box cover 4 is also larger, and the heat transfer effect is better; the upper end of the heating heat pipe 7 is more than the battery list.
  • the top of the body 6 is low, the lower end of the heating heat pipe 7 is lower than the bottom of the battery cell 6, and the portion of the lower end of the heating heat pipe 7 is in close contact with the top of the heating device 8.
  • the portion of the lower end of the heating heat pipe is just placed in the In the gap left between the top of the heating device 8 and the bottom of the battery cell 6, the portion of the lower end of the heating heat pipe 7 that grows from the bottom of the battery cell 6 is bent at an angle to the other portion, which is proportional to the heating and heating of the battery cell 6
  • the bending angle of the contact portion of the heat pipe 7 is equal, and the heating heat pipe 7 is approximately L-shaped, so that the contact area between the battery cell 6 and the heating heat pipe 7 is larger, and the contact area between the heating heat pipe 7 and the heating device 8 is also increased.
  • the battery outer case 2 is provided with a heat dissipation fan 9, the heat dissipation fan 9 is installed on the battery outer case 2 near the top, the heat dissipation fan 9 is provided with the damper 10; and the inner battery case 1 is at the bottom Carton bottom insulation board insulation board 12 and the battery outer case 2 is provided with a roller uniformly between 11 3.
  • the side of the outer casing 2 of the present invention opposite to the heat radiating fan 9 is provided with an opening for the purpose of placing the inner battery case 1 inside the battery outer case 2 through the port, and the bottom of the inner battery case 1 is
  • the roller 11 slides to realize the entrance and exit of the battery outer case 2, which is similar to the principle of the drawer;
  • the battery inner box 1 is further provided with a slightly larger heat insulating plate on one end of the battery inner box 1 for the above-mentioned battery outer box 2 box mouth Seal and keep warm.
  • the cooling fan 9 damper 10 is closed.
  • the inner box cover 4 is preferably a heat insulating plate, and the heating device 8 works.
  • the heat pipe conducts heat with unidirectionality, so the heating heat pipe 7 conducts heat of the heating device 8 to the center of the battery.
  • the heat-dissipating heat pipe 5 hardly operates. The heat is transmitted from the heating device 8 to the lower portion of the heating heat pipe 7 as shown by the arrow in Fig. 2, and is transferred from the lower portion of the heating heat pipe 7 to the upper portion of the heating heat pipe 7, and then to the battery cell 6.
  • the heat dissipating heat sink is replaced by the heat dissipating plate on the upper part of the heat dissipating heat pipe 5, even if a small amount of heat is introduced into the heat dissipating heat pipe 5, the heat remains in the inner cell of the battery.
  • the inner box has more cooling holes.
  • the fan damper 10 is snoring.
  • the inner box cover 4 is preferably a heat dissipation plate.
  • the heat conduction of the heat pipe is unidirectional.
  • the heat dissipation heat pipe 5 conducts heat inside the battery to the heat dissipation plate at the top of the battery inner box 1, and the heat is discharged by the heat dissipation fan 9, and the heating device 8 does not work, so the heating heat pipe 7 hardly works, and the heat is as shown by the arrow in FIG.
  • the battery unit 6 is introduced into the heat dissipation heat pipe 5, and is transmitted to the upper portion of the heat dissipation heat pipe 5, and then transmitted to the heat dissipation plate at the top, and the heat is removed from the battery case by the rear heat dissipation fan 9. Since the insulation boards of the inner and outer boxes of the battery are all removed, the heat in the battery cells can be not only discharged by the heat dissipation heat pipe 5, but also discharged from the heat dissipation holes, thereby greatly improving the heat dissipation efficiency.

Abstract

一种车用动力电池箱的热管控温系统，包括电池外箱（2）、电池内箱（1）以及设置在电池内箱（1）内的多个电池单体（6），各电池单体（6）之间紧密夹持有散热热管（5）或加热热管（7），散热热管（5）和加热热管（7）相间设置，电池外箱（2）箱体上设有外箱保温板（3），电池内箱（1）箱体顶部设置有内箱盖板（4），电池内箱（1）箱体其余部分设置有内箱保温板（12），电池内箱（1）底部设置有加热器件（8），电池外箱（2）上设置有散热风扇（9）。该热管控温系统既能在北方严寒的冬季给电池加温，又能在夏季炎热天气给电池散热，使电池组具有良好的工作环境，提高了电池组的使用性能和安全性。

Description

一种车用动力电池箱的热管控温系统 技术领域：
本发明涉及电动汽车技术领域， 更具体涉及一种车用动力电池箱的热管控温系统。 背景技术- 电动汽车上的核心技术之一就是能源储备及供给系统， 特别对于锂电池， 车载电池 组的电池散热和温度的均一性， 对于提高电池组的使用性能和安全性具有重大作用， 将 电池的工作温度控制在 20-45 Ό之间， 无论对于电池的电性能， 还是安全性能来说均有 好处。 温度越低， 电解液的离子电导率越低， 电极反应的进行速度也越慢， 不仅会造成 电池容量和功率性能的下降， 而且低温充电还容易引起负极表面析锂， 给电池带来安全 隐患， 并导致电池循环性能的快速恶化； 而温度太高时， 电极表面的钝化膜的稳定性将 受到影响， 电池容易发生鼓胀， 并导致循环性能的降低， 此外， 过高的温度不利于电池 体内热量的释放， 容易导致安全性问题。
热管是一种传热元件， 它充分利用了热传导原理与相变传热原理， 透过热管将发热 物体的热量迅速传递到热源外， 其导热能力超过任何已知金属的导热能力， 热管技术己 广泛应用于空间飞行器、 核反应堆、 电子器件冷却等领域。
由于锂电池的最佳工作温度范围较窄， 而目前电动汽车用锂电池在车内的温度环境 状况较差， 夏季电池散热不良， 造成容量和功率的下降， 容易导致安全事故； 北方冬季 极端寒冷情况下， 目前所使用的电动汽车电池放电性能下降都非常严重， 甚至汽车无法 行驶。
发明内容：
本发明的目的是提供一种车用动力电池箱的热管控温系统， 即能在北方严寒的冬季 给电池加温， 又能在夏季炎热天气给电池散热， 使电池组具有一个良好的工作环境， 对 于提高电池组的使用性能和安全性具有重大作用。
为实现上述目的， 本发明采用以下技术方案：
本发明提供的一种车用动力电池箱的热管控温系统， 该热管控温系统包括电池外 箱、 电池内箱以及设置在电池内箱内的多个电池单体， 所述电池单体与电池单体之间紧 密夹持有散热热管或加热热管， 所述散热热管或加热热管相间设置； 所述电池外箱箱体 上设有外箱保温板， 所述电池内箱箱体顶部设置有内箱盖板， 所述电池内箱箱体其余部 分设置有内箱保温板， 所述内箱盖板与电池单体顶部之间留有空隙， 所述内箱保温板与 电池单体之间留有空隙， 所述电池内箱底部靠近电池单体底部的一侧设置有加热器件， 所述加热器件与电池单体底部之间留有空隙； 所述散热热管的上端比电池单体顶部高， 所述散热热管的下端比电池单体底部高， 所述散热热管的上端高出的部分与内箱盖板紧 密接触； 所述加热热管的上端比电池单体顶部低， 所述加热热管的下端比电池单体底部 低， 所述加热热管的下端长出的部分与所述加热器件紧密接触； 所述电池外箱上设置有 散热风扇。 '
本发明提供的一种车用动力电池箱的热管控温系统技术方案中，所述电池单体与电 池单体之间仅夹持有一个散热热管或一个加热热管。
本发明提供的另一优选的一种车用动力电池箱的热管控温系统技术方案中， 所述散 热热管和加热热管为片状热管， 所述片状热管表面设有绝缘涂层。
本发明提供的再一优选的一种车用动力电池箱的热管控温系统技术方案中， 所述散 热热管是将电池单体内部热量散发出去的热管，所述加热热管是将外部热量传递到电池 单体内部的热管。
本发明提供的又一优选的一种车用动力电池箱的热管控温系统技术方案中， 所述电 池内箱箱体顶部的内箱盖板为保温板或者散 ¾\板。
本发明提供的又一优选的一种车用动力电池箱的热管控温系统技术方案中，所述电 池内箱上开有散热孔。
本发明提供的又一优选的一种车用动力电池箱的热管控温系统技术方案中， 所述散 热热管的上端高出部分设置在内箱盖板与电池单体顶部之间的空隙内。
本发明提供的又一优选的一种车用动力电池箱的热管控温系统技术方案中， 所述加 热热管的下端长出电池单体底部的部分设置在加热器件顶部与电池单体底部之间留有 的空隙内。
本发明提供的又一优选的一种车用动力电池箱的热管控温系统技术方案中，所述外 箱保温板、 内箱盖板、 内箱保温板均为可拆卸式安装。
本发明提供的又一优选的一种车用动力电池箱的热管控温系统技术方案中， 所述散 热风扇安装在电池外箱上靠近顶部的位置， 所述散热风扇设有风门。
ώ于采用了上述技术方案， 本发明得到的有益效果是：
ι、 电池箱采用传热效率极高的热管技术对电池箱进行散热或加温， 解决了动力电 池受温度影响巨大的问题， 配合箱体可拆卸的双重保温层， 给电池提供一个良好的温度 环境， 大大提高了车载动力电池的使用性能和安全性；
2、 电池内部的热管采用最先进的片状热管技术， 可以更加紧密的贴和在电池单体 内部， 导热面积更大， 传热效果远高于现有的电池箱传热技术；
3、 根据电池内部的热场分布情况， 更佳合理的布置热管位置， 保证了电池内部的 温度场分布的一致性
4、 散热热管与加热热管在电池内部间隔分布， 散热与加热互不影响
5、 热管表面采用先进的绝缘涂层， 解决了电池内部的绝缘要求；
附图说明
图 1为一种车用动力电池箱的热管控温系统的电池箱剖面图；
图 2为一种车用动力电池箱的热管控温系统加热状态示意图；
图 3为一种车用动力电池箱的热管控温系统散热状态示意图；
图 4为本发明中拆去顶部内箱盖板的电池内箱示意图；
其中， 1 -电池内箱， 2-电池外箱， 3-外箱保温板， 4-内箱盖板， 5-散热热管， 6-电池 单体， 7-加热热管， 8-加热器件， 9-散热风扇， 10-风门， 11 -辊子， 12-内箱保温板。
具体实施方式
下面结合实施例对发明作进一歩的详细说明。
实施例 1：
如图 】 -4所示， 本例的发明一种车用动力电池箱的热管控温系统， 包括电池外箱 2 和设置在电池外箱 2内部的电池内箱 1 , 电池内箱 1上开有散热孔， 电池内箱 1 内部设 青有多个电池单体 6， 每个电池单体 6与电池单体 6之间紧密夹持有散热热管 5或加热 热管 7， 本例中每个电池单体 6与电池单体 6之间仅夹持有一个散热热管 5或一个加热 热管 7， 散热热管 5或加热热管 7相间设置， 散热热管 5和加热热管 7为片状热管， 片 状热管表面设有绝缘涂层， 散热热管 5是将电池单体 6内部热量散发出去的热管， 加热 热管 7是将外部热量传递到电池单体 6内部的热管； 电池外箱 2箱体四周设有外箱保温 板 3， 外箱保温板 3为可拆卸式安装， 电池内箱 1箱体顶部设置有内箱盖板 4， 电池内 箱 1箱体其余部分设置有内箱保温板 12，内箱盖板 4和内箱保温板 12为可拆卸式安装， 电池内箱 1箱体顶部的内箱盖板 4可以为保温板或者散热板， 内箱盖板 4底部与电池单 体 6顶部之间留有空隙，电池内箱 1底部靠近电池单体 6底部的一侧设置有加热器件 8， 加热器件 8顶部与电池单体 6底部之间留有空隙； 散热热管 5的上端比电池单体 6顶部 高， 散热热管 5的下端比电池单体 6底部高， 散热热管 5的上端高出的部分与内箱盖板 4紧密接触， 本例中散热热管 5的上端高出的部分刚好设置在顶部的内箱盖板 4与电池 单体 6顶部之间的空隙内， 散热热管 5的上端高出部分与其另一部分弯曲成一个角度， 这个角度跟电池单体 6上与散热热管 5接触部分的弯曲角度相等， 散热热管 5近似呈 L 字型， 目的是使电池单体 6与散热热管 5的接触面积更大， 同时散热热管 5与内箱盖板 4接触面积也变大， 传热效果更好； 加热热管 7的上端比电池单体 6顶部低， 加热热管 7的下端比电池单体 6底部低， 加热热管 7的下端长出的部分与加热器件 8顶部紧密接 触， 本例中加热热管 Ί的下端长出的部分刚好设置在加热器件 8顶部与电池单体 6底部 之问留有的空隙内， 加热热管 7的下端长出电池单体 6底部的部分与其另一部分弯曲成 一个角度， 这个角度跟电池单体 6上与加热热管 7接触部分的弯曲角度相等， 加热热管 7近似呈 L字型， 目的是使电池单体 6与加热热管 7的接触面积更大， 同时加热热管 7 与加热器件 8顶部接触面积也变大，传热热效果更好； 电池外箱 2上设置有散热风扇 9， 散热风扇 9安装在电池外箱 2上靠近顶部的位置， 散热风扇 9设有风门 10; 电池内箱 1 底部的内箱保温板 12与电池外箱 2底部的外箱保温板 3之间均匀设置有辊子 1 1。
在本例中本发明的电池外箱 2箱体上与散热风扇 9相对立的一面设有开口， 目的是 通过这个口将电池内箱 1放置在电池外箱 2内部， 电池内箱 1底部在辊子 11上滑动来 实现进出电池外箱 2， 这种方式与抽屉原理类似； 电池内箱 1的一端上还设置有一块稍 大的保温板， 用于上述的电池外箱 2箱体上的口进行密封保温。
本发明在冬夏季节工作原理如下：
冬季状态： 散热风扇 9风门 10关闭， 这里优选内箱盖板 4为保温板， 加热器件 8 工作， 热管传导热量具有单向性， 所以加热热管 7将加热器件 8热量传导至电池中央， 此时散热热管 5几乎不工作， 热量如图 2中箭头所示， 由加热器件 8传至加热热管 7下 部， 由加热热管 7下部传至加热热管 7上部， 再传至电池单体 6。 由于散热热管 5上部 去掉散热板换为保温板， 即使有少量热传入散热热管 5， 热量依然存留在电池内箱。
夏季状态： 拆除电池内外箱的保温板， 内箱有较多的散热孔， 散热风扇 9工作时风 扇风门 10打丌， 这里优选内箱盖板 4为散热板， 由于热管传导热量具有单向性， 散热 热管 5将电池内部热量传导至电池内箱 1顶部的散热板， 由散热风扇 9将热量排出， 加 热器件 8不工作， 所以加热热管 7几乎不工作， 热量如图 3中箭头所示， 由电池单体 6 传入散热热管 5， 传至散热热管 5上部， 再传至顶部的散热板， 并由后部的散热风扇 9 将热量排出电池外箱。 由于电池内外箱的保温板全部拆除， 电池单体内热量不但可以由 散热热管 5导出散掉， 也可从散热孔排出， 大大提高了散热效率。
最后应该说明的是:以上实施例仅用以说明本发明的技术方案而非对其限制，尽管参 照上述实施例对本发明进行了详细说明， 所属领域的普通技术人员应当理解： 依然可以 对本发明的具体实施方式进行修改或者等同替换， 而未脱离本发明精神和范围的任何修 改或者等同替换， 其均应涵盖在本权利要求范围当中。

Claims

权 利 要 求
1、 一种车用动力电池箱的热管控温系统， 该热管控温系统包括电池外箱 （2)、 电 池内箱 （1) 以及设置在电池内箱 （1) 内的多个电池单体 （6)， 其特征在于： 所述电池 单体 （6) '与电池单体 （6) 之间紧密夹持有散热热管 （5) 或加热热管 （7)， 所述散热 热管 （5) 或加热热管 （7) 相间设置； 所述电池外箱 （2) 箱体上设有外箱保温板 （3)， 所述电池内箱 （1) 箱体顶部设置有内箱盖板 （4)， 所述电池内箱 （1) 箱体其余部分设 置有内箱保温板 （12)， 所述内箱盖板 （4).与电池单体 （6) 顶部之间留有空隙， 所述 内箱保温板 （12) 与电池单体 （6) 之间留有空隙， 所述电池内箱 （1) 底部靠近电池单 体 （6) 底部的一侧设置有加热器件 （8)， 所述加热器件 （8) 与电池单体 （6) 底部之 间留有空隙； 所述散热热管 （5) 的上端比电池单体 （6) 顶部高， 所述散热热管 （5) 的下端比电池单体 （6) 底部高， 所述散热热管 （5) 的上端高出的部分与内箱盖板 （4) 紧密接触； 所述加热热管 （7) 的上端比电池单体 （6) 顶部低， 所述加热热管 （7) 的 下端比电池单体（6)底部低， 所述加热热管（7)的下端长出的部分与所述加热器件（8) 紧密接触； 所述电池外箱 （2) 上设置有散热风扇 （9)。
2、 如权利要求 1 所述的一种车用动力电池箱的热管控温系统， 其特征在于： 所述 电池单体 （6) 与电池单体 （6) 之间仅夹持有一个散热热管 （5) 或一个加热热管 （7)。
3、 如权利要求 1 所述的一种车用动力电池箱的热管控温系统， 其特征在于： 所述 散热热管 （5) 和加热热管 （7) 为片状热管， 所述片状热管表面设有绝缘涂层。
4、 如权利要求 1 所述的一种车用动力电池箱的热管控温系统， 其特征在于： 所述 散热热管 （5) 是将电池单体 （6) 内部热量散发出去的热管， 所述加热热管 （7) 是将 外部热量传递到电池单体 （6) 内部的热管。
5、 如权利要求 1 所述的一种车用动力电池箱的热管控温系统， 其特征在于： 所述 电池内箱 （1) 箱体顶部的内箱盖板 （4) 为保温板或者散热板。
6、 如权利要求 1 所述的一种车用动力电池箱的热管控温系统， 其特征在于： 所述 电池内箱 （1) 上丌有散热孔。
7、 如权利要求 1 所述的一种车用动力电池箱的热管控温系统， 其特征在于： 所述 散热热管 （5) 的上端高出部分设置在内箱盖板与电池单体顶部之间的空隙内。
8、 如权利要求 1 所述的一种车用动力电池箱的热管控温系统， 其特征在于： 所述 加热热管 （7) 的下端长出电池单体 （6) 底部的部分设置在加热器件 （8) 顶部与电池 单体 （6) 底部之间留有的空隙内。
9、 如权利要求 1 所述的一种车用动力电池箱的热管控温系统， 其特征在于： 所述 外箱保温板 （3)、 内箱盖板 （4)、 内箱保温板 （12) 均为可拆卸式安装。
10、 如权利要求 1所述的一种车用动力电池箱的热管控温系统， 其特征在于： 所述 散热风扇 （9) 安装在电池外箱 （2) 上靠近顶部的位置， 所述散热风扇 （9) 设有风门
PCT/CN2011/001812 2011-07-01 2011-10-31 一种车用动力电池箱的热管控温系统 WO2013003989A1 (zh)

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