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WO2018107926A1 - 一种动力电池组间接接触式液体冷却/加热装置与方法 - Google Patents

一种动力电池组间接接触式液体冷却/加热装置与方法 Download PDF

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Publication number
WO2018107926A1
WO2018107926A1 PCT/CN2017/110105 CN2017110105W WO2018107926A1 WO 2018107926 A1 WO2018107926 A1 WO 2018107926A1 CN 2017110105 W CN2017110105 W CN 2017110105W WO 2018107926 A1 WO2018107926 A1 WO 2018107926A1
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WO
WIPO (PCT)
Prior art keywords
heat conducting
heat
pipe
battery module
heat conductive
Prior art date
Application number
PCT/CN2017/110105
Other languages
English (en)
French (fr)
Inventor
陈吉清
刘蒙蒙
兰凤崇
李屹罡
Original Assignee
华南理工大学
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Publication of WO2018107926A1 publication Critical patent/WO2018107926A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—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
    • H01M10/6552—Closed pipes transferring heat by thermal conductivity or phase transition, e.g. heat pipes
    • 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
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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 invention relates to a cooling/heating device for a power battery pack, and more particularly to a power battery pack indirect contact liquid cooling/heating device and method.
  • Lithium-ion batteries have occupied the majority market share of electric vehicle battery batteries due to their high energy density and power density, large specific energy, long cycle life, high energy conversion rate, low self-discharge rate and no memory effect.
  • the performance of lithium-ion batteries is greatly affected by temperature.
  • Lithium-ion batteries accumulate a large amount of heat during operation due to internal resistance heat generation and polarization reactions, and heat is more likely to accumulate in a compactly placed vehicle environment. If the heat cannot be discharged in time, the temperature of the battery pack will rise sharply and the temperature difference between the battery cells will increase, which will lead to a decrease in the overall performance of the battery pack and a shortened service life, and may even cause the battery pack to run out of control. A serious security incident. Therefore, a good battery thermal management system largely affects the performance and cycle life of the single battery and the entire battery pack, and is important for ensuring the performance and safety of the battery pack.
  • the thermal management methods and thermal management structures for vehicle batteries are endless, but most of the research and applications basically adopt air-cooled thermal management methods.
  • the structure is simple and easy to implement, the cost is low, but the cooling effect is not good and the battery The uniformity of the package is poor.
  • liquid has higher heat capacity and thermal conductivity. Therefore, at the same volume and flow rate, the liquid cooling effect is significantly better than air, the battery temperature distribution is relatively uniform, and the liquid medium is also low when the battery temperature is low. It can heat the battery and has good two-way regulation, which is beneficial to the thermal management of the power battery pack.
  • the application of liquid heat transfer in electric vehicles is increasing. However, when using liquids, sealing, insulation, and Reliability, and cost, etc., because once the liquid leaks, it may cause a short circuit inside the battery, causing a serious safety accident.
  • the problem that the liquid leakage easily occurs in the prior art and the internal short circuit of the battery pack is caused is solved.
  • An indirect contact liquid cooling/heating device for a power battery pack comprising a plurality of battery modules 4 distributed from a battery cell array, wherein each of the battery modules 4 is bonded with a heat conducting sheet 2, and the heat conducting sheet 2
  • the two ends are respectively connected with the heat conducting bracket 3, and the two ends of the heat conducting bracket 3 are respectively connected to the heat conducting pipe 1, and the heat conducting pipe 1 has a circulating liquid medium therein.
  • the heat conducting pipe 1 communicates with an external heat exchanger or an evaporator pipe.
  • the heat conducting sheet 2 absorbs heat generated during the operation of the battery module 4 and is transmitted to the heat conducting pipe 1 through the heat conducting bracket 3;
  • the circulating liquid medium carries away the heat transferred from the heat conducting bracket 3;
  • the temperature control of the battery module 4 is achieved by changing the flow rate and temperature of the liquid medium in the heat transfer conduit 1.
  • the longitudinal direction of the heat conducting bracket 3 is perpendicular to the axis of the heat conducting duct 1; the longitudinal direction of the heat conducting bracket 3 is perpendicular to the longitudinal direction of the heat conducting sheet 2.
  • the heat conducting insulating material is coated between the battery module 4 and the heat conducting sheet 2; the inner side of the heat conducting pipe 1 is a boss structure 11 , and the two ends of the heat conducting bracket 3 are respectively connected to the heat conducting pipe 1 through the boss structure 11 .
  • the liquid medium is water, heat transfer oil or water-ethylene glycol.
  • the heat conductive sheet 2 has a thickness of 0.3 mm to 1.5 mm and is made of metal aluminum or aluminum oxide; the heat conductive sheet 2 is designed to completely conform to the outer surface of the battery module, and the area is equal to or larger than the battery cell or the module. The area of the central heating area.
  • the joints of the two ends of the heat conducting sheet 2 and the heat conducting bracket 3 are bonded by welding or thermal conductive adhesive.
  • the joint between the two ends of the heat-conducting bracket 3 and the heat-conducting pipe 1 is bonded by welding or thermal conductive adhesive.
  • the cross-sectional shape of the heat transfer pipe 1 is rectangular or circular.
  • An indirect contact liquid cooling/heating method for a power battery pack comprising the steps of:
  • the two ports of the heat conducting pipe 1 are respectively connected in series with the pipes of the external evaporator, and when the temperature of the battery module is higher than the set value, the evaporator is started;
  • the heat conducting sheet 2 absorbs heat generated during the operation of the battery module 4, and is transmitted to the wall of the heat conducting pipe 5 through the heat conducting bracket 3; and then transferred to the cooled liquid medium circulating in the heat conducting pipe 5 by the pipe wall, and then The heat generated during the operation of the battery module 4 is taken away;
  • the two ports of the heat conducting pipe 1 are respectively connected in series with the pipes of the external heat exchanger, and when the temperature of the battery module is lower than the set value, the heat exchanger is started;
  • the heated liquid medium circulating in the heat conducting pipe 1 transfers heat to the heat conducting bracket 3 and the heat conducting sheet 2 through the pipe wall of the heat conducting pipe 1; the heat transfer piece 2 transfers heat to the battery cells in the battery module 4;
  • the temperature control of the battery module 4 is achieved by changing the flow rate and temperature of the liquid medium in the heat transfer conduit 1.
  • the present invention has the following advantages and effects:
  • Each of the battery modules 4 of the present invention is bonded with a heat conducting sheet 2, and two ends of the heat conducting sheet 2 are respectively connected with the heat conducting bracket 3, and two ends of the heat conducting bracket 3 are respectively connected to the heat conducting pipe 1, and the heat conducting pipe 1 has a circulating liquid. medium.
  • the heat conducting pipe 1 communicates with an external heat exchanger or a pipe of the evaporator, and the heat conducting sheet 2 absorbs heat generated during the operation of the battery module 4 and is transferred to the heat conducting through the heat conducting bracket 3.
  • Pipe 1; the liquid medium circulating in the heat pipe 1 carries away the heat transferred from the heat conducting bracket 3; the temperature control of the battery module 4 is realized by changing the flow rate and temperature of the liquid medium in the heat conducting pipe 1.
  • the invention realizes heat exchange of the battery module through the heat transfer function of the heat conduction pipeline, thereby avoiding direct contact between the liquid and the battery, and reducing the probability of occurrence of liquid leakage and causing internal short circuit of the battery.
  • the heat conduction pipe of the invention realizes the bidirectional temperature control of the battery module through the control of the valve, and realizes the bidirectional temperature control of the battery module, that is, when the temperature of the battery pack is overheated, the low temperature liquid cooled by the evaporator is used for the battery mode.
  • the group performs cooling; when the temperature of the battery module is too cold, the battery module is heated by the high temperature liquid heated by the heat exchanger, and the temperature of the liquid can be controlled to achieve reasonable control of the temperature of the battery pack.
  • the heat conducting pipe of the heat conducting bracket of the invention is fixed to the heat conducting pipe which exchanges heat with the outside, and the middle part is fixed with the heat conducting piece, and the heat absorbed by the heat conducting piece is transmitted to the heat conducting pipe.
  • the two sides of the heat-conducting sheet are directly fixed to the heat-conducting bracket, and the heat-conducting sheet is designed to completely conform to the outer surface of the battery, tightly wrapping the central heating area of the battery module, and quickly transferring the heat generated by the operation of the battery module to Thermal support bracket.
  • the heat conducting sheet, the heat conducting bracket and the heat conducting pipe of the invention are fixed to each other by welding or heat conducting insulating bonding material, thereby reducing the collision and slip between the battery cell and the heat conducting pipeline caused by the electric vehicle running, thereby improving the battery.
  • the mechanical strength of the thermal management system is not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to each other.
  • the invention adopts the way that the heat conducting sheet, the heat conducting bracket and the heat conducting pipe are fixedly connected, the heat conducting component is closely attached to the central surface of the battery module, and the air between the battery module and the heat conducting pipeline is excluded as much as possible, so that the interface thermal resistance is greatly reduced To facilitate rapid heat exchange of the battery.
  • the thermal conductive sheet is in close contact with the central area of the battery module and has a large contact area, and the high thermal conductivity of the thermal conductive sheet, the battery has a good heat dissipation effect, and also contributes to improving the overall uniformity of the temperature of the battery module.
  • the invention has compact structure, light weight and easy assembly.
  • the heat-conducting bracket, the heat-conducting sheet and the heat-conducting tube can be assembled in advance. After the battery unit is added and positioned by the heat-conducting sheet and the heat-conducting bracket, the series-parallel connection between the battery electrodes can be performed, and the installation is very convenient.
  • the technical means of the present invention are simple and easy, and the heat exchange effect of the power battery pack is ensured.
  • the direct contact between the liquid and the battery module is avoided, the probability of internal short circuit of the battery module due to liquid leakage is reduced, and the safety of the power battery is improved.
  • FIG. 1 is a top plan view of an indirect contact liquid cooling/heating device for a power battery pack of the present invention.
  • Figure 2 is a side elevational view of Figure 1 (away from the middle of the battery).
  • the invention discloses a power battery pack indirect contact liquid cooling/heating device, which comprises a plurality of battery modules 4 distributed by a battery cell array, and a heat conducting sheet 2 is adhered between each battery module 4, The two ends of the heat conducting sheet 2 are respectively connected with the heat conducting bracket 3, and the two ends of the heat conducting bracket 3 are respectively connected to the heat conducting pipe 1, and the heat conducting pipe 1 has a circulating liquid medium therein.
  • the heat conducting pipe 1 can be made of a metal, aluminum, copper, iron or the like which is easy to process and has a high thermal conductivity material.
  • the heat conducting pipe 1 communicates with an external heat exchanger or an evaporator pipe.
  • the heat conducting sheet 2 absorbs heat generated during the operation of the battery module 4 and is transmitted to the heat conducting pipe 1 through the heat conducting bracket 3;
  • the circulating liquid medium takes away the heat transferred from the heat conducting bracket 3; thereby avoiding direct contact between the liquid medium and the battery cell, and reducing the probability of liquid leakage causing internal short circuit of the battery.
  • the temperature control of the battery module 4 is achieved by changing the flow rate and temperature of the liquid medium in the heat transfer conduit 1.
  • the longitudinal direction of the heat conducting bracket 3 is perpendicular to the axis of the heat conducting duct 1; the longitudinal direction of the heat conducting bracket 3 is perpendicular to the longitudinal direction of the heat conducting sheet 2.
  • the specific layout can be determined according to the actual situation.
  • the thermal conductive adhesive is coated between the battery module 4 and the thermal conductive sheet 2.
  • the thermal conductive adhesive can be made of polyurethane, silicone, epoxy resin and other bonding materials, and its thermal conductivity should be no less than 0.5W/mK to ensure its good thermal conductivity.
  • the inner side of the heat conducting pipe 1 is a boss structure 11 , and the two ends of the heat conducting bracket 3 are respectively connected to the heat conducting pipe 1 through the boss structure 11 .
  • the liquid medium is water, heat transfer oil or water-ethylene glycol.
  • the heat conductive sheet 2 has a thickness of 0.3 mm to 1.5 mm, a thermal conductivity of not less than 10 W/mK, and the material may be metal aluminum or aluminum oxide; the heat conductive sheet 2 completely conforms to the outer surface of the battery cell, and has a corresponding shape and area. It is equal to or larger than the area of the central heating area of the battery cell or battery module, and its surface can be subjected to appropriate surface treatment, such as passivation treatment, to have a certain electrical insulation strength.
  • the joints of the two ends of the heat conducting sheet 2 and the heat conducting bracket 3 are bonded by welding or thermal conductive adhesive.
  • the heat-conducting bracket 3 can be the same material as the heat-conducting sheet 2, and has a flat shape with a thickness of 0.8 to 1.5 mm, and the height thereof can be specifically determined according to the overall height or thickness of the battery module 4.
  • the joint between the two ends of the heat-conducting bracket 3 and the heat-conducting pipe 1 is bonded by welding or thermal conductive adhesive.
  • the cross-sectional shape of the heat conducting pipe 1 is rectangular or circular. Of course, the shape and size thereof can be designed according to the power level of the battery module and the heat dissipation requirement.
  • the indirect contact liquid cooling/heating method of the power battery of the present invention can be realized by the following steps:
  • the battery module cooling step connecting the two ports of the heat conduction pipe 1 to the external evaporator pipe, and when the battery module temperature is too high, starting the evaporator;
  • the heat conducting sheet 2 absorbs heat generated during the operation of the battery module 4, and is transmitted to the wall of the heat conducting pipe 5 through the heat conducting bracket 3; and then transferred to the cooled liquid medium circulating in the heat conducting pipe 5 by the pipe wall, and then The heat generated during the operation of the battery module 4 is taken away;
  • the heating step of the battery module the two ports of the heat conducting pipe 1 are respectively connected in series with the pipes of the external heat exchanger, and when the temperature of the battery module is too low, the heat exchanger is started;
  • the heated liquid medium circulating in the heat conducting pipe 1 transfers heat to the heat conducting bracket 3 and the heat conducting sheet 2 through the pipe wall of the heat conducting pipe 1; the heat transfer piece 2 transfers heat to the battery cells in the battery module 4;
  • the battery module 4 is realized. temperature control.
  • the present invention can be preferably implemented.

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  • Manufacturing & Machinery (AREA)
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Abstract

本发明公开了一种动力电池组间接接触式液体冷却/加热装置与方法；每组电池模组之间贴合有导热片，导热片的两端分别连接导热支架，导热支架的两端分别连接导热管道，导热管道内有循环流动的液体介质；导热管道与外界的换热器或蒸发器的管道相通，该导热片通过吸收电池模组工作过程中产生的热量，并通过导热支架传递给导热管道；导热管道内循环流动的液体介质带走导热支架传递过来的热量；通过改变液体介质在导热管道内的流速、温度，实现对电池模组的温度控制。本装置结构紧凑、质量轻便、易组装；导热支架、导热片和导热管道可以事先组装，待加入电池单体并由导热片和导热支架定位后，便可进行电池电极间的串并联连接，安装十分方便。

Description

一种动力电池组间接接触式液体冷却/加热装置与方法 技术领域
本发明涉及动力电池组的冷却/加热装置，尤其涉及一种动力电池组间接接触式液体冷却/加热装置与方法。
背景技术
锂离子电池凭借其能量密度和功率密度高，比能量大、循环寿命长、能量转换率高、自放电率低和无记忆效应等优势，已经占据了电动汽车车用电池的绝大多数市场份额，但锂离子电池的性能受温度影响很大。锂离子电池在工作过程中由于内阻生热和极化反应会累积产生大量的热，并且在紧凑摆放的车载环境下热量更容易聚集。如果这些热量不能及时排出，就会导致电池包温度的急剧升高和各电池单体间的温差加大，进而导致电池包的整体性能下降和使用寿命的缩短，甚至会引发电池包热失控造成严重的安全事故。因此，良好的电池热管理系统很大程度上影响单体电池及整个电池包的性能发挥和循环寿命，对确保电池包的使用性能和使用安全性具有重要意义。
目前，针对车用电池的热管理方法和热管理结构层出不穷，但大部分的研究和应用基本采用空冷的热管理方式，虽然其结构简单易实现、成本低，但由于其冷却效果不佳且电池包的均匀性较差。与气体相比，液体具有更高的热容量和导热系数，因此，在相同体积和流速下，液体的冷却效果明显比空气好，电池温度分布也相对较均匀，而且液体介质在电池温度低时也能加热电池，具有良好的双向调节作用，有利于动力电池包的热管理，目前液体传热在电动汽车的应用越来越多。但是采用液体时，必须考虑密封、绝缘、 可靠性、以及成本等问题，因为液体一旦发生泄漏，就可能引起电池内部短路，造成严重的安全事故。
发明内容
本发明的目的在于克服上述现有技术的缺点和不足，提供一种动力电池组间接接触式液体冷却/加热装置与方法。在给电池组提供良好冷却/加热的基础上，解决目前现有技术中容易发生液体泄漏而导致电池组内部短路的问题。
本发明通过下述技术方案实现：
一种动力电池组间接接触式液体冷却/加热装置，包括由电池单体阵列分布而成的多组电池模组4，每组电池模组4之间贴合有导热片2，导热片2的两端分别连接导热支架3，导热支架3的两端分别连接导热管道1，导热管道1内有循环流动的液体介质。
所述导热管道1与外界的换热器或蒸发器的管道相通，该导热片2通过吸收电池模组4工作过程中产生的热量，并通过导热支架3传递给导热管道1；导热管道1内循环流动的液体介质带走导热支架3传递过来的热量；
通过改变液体介质在导热管道1内的流速、温度，实现对电池模组4的温度控制。
所述导热支架3的长度方向与导热管道1的轴线垂直；导热支架3的长度方向与导热片2长度方向垂直。
所述电池模组4与导热片2之间涂覆有导热绝缘胶；所述导热管道1的内侧为凸台结构11，该导热支架3的两端分别通过该凸台结构11连接导热管道1。
所述液体介质为水、导热油或者水—乙二醇。
所述导热片2的厚度为0.3mm～1.5mm，材质为金属铝或者氧化铝；导热片2设计成与电池模组外表面完全贴合的结构形状，面积等于或者大于电池单体或模组的中心发热区域面积。
所述导热片2的两端与导热支架3的连接处，采用焊接或者导热绝缘胶粘接。
所述导热支架3的两端与导热管道1的连接处，采用焊接或者导热绝缘胶粘接。
所述导热管道1的截面形状为矩形或者圆形。
一种动力电池组间接接触式液体冷却/加热方法，其包括如下步骤：
电池模组冷却步骤
将导热管道1的两端口分别与外界的蒸发器的管道串联，当电池模组温度高于设定值时，启动蒸发器；
该导热片2吸收电池模组4工作过程中产生的热量，并通过导热支架3传递给导热管道5的管壁；再由管壁传递给导热管道5内循环流动的冷却的液体介质，进而将电池模组4工作过程中产生的热量带走；
电池模组加热步骤
将导热管道1的两端口分别与外界的换热器的管道串联，当电池模组温度低于设定值时，启动换热器；
导热管道1内循环流动的加热的液体介质，通过导热管道1的管壁将热量依次传递给导热支架3、导热片2；由导热片2将热量传递给电池模组4内的电池单体；
通过改变液体介质在导热管道1内的流速、温度，实现对电池模组4的温度控制。
本发明相对于现有技术，具有如下的优点及效果：
本发明每组电池模组4之间贴合有导热片2，导热片2的两端分别连接导热支架3，导热支架3的两端分别连接导热管道1，导热管道1内有循环流动的液体介质。导热管道1与外界的换热器或蒸发器的管道相通，该导热片2通过吸收电池模组4工作过程中产生的热量，并通过导热支架3传递给导热 管道1；导热管道1内循环流动的液体介质带走导热支架3传递过来的热量；通过改变液体介质在导热管道1内的流速、温度，实现对电池模组4的温度控制。本发明通过导热管路的热传输功能，实现对电池模组的热交换，从而避免了液体和电池的直接接触，降低了发生液体泄漏而导致电池内部短路的概率。
本发明导热管道通过阀的控制实现与外界的换热器或蒸发器的管道相通，实现电池模组的双向温度控制，即当电池组温度过热时，由经过蒸发器降温的低温液体对电池模组进行冷却；当电池模组温度过冷时，由经过换热器升温的高温液体对电池模组进行加热，还可以通过改变液体的流速，实现对电池包的温度合理控制。
本发明导热支架的两端与外界进行热交换的导热管道固接，中部与导热片固接，将导热片吸收的热量传递给导热管道。导热片的两侧与导热支架直接固接，导热片设计成与电池外表面完全贴合的结构形状，紧紧包裹着电池模组的中心发热区域，将电池模组工作产生的热量快速传递给导热支架。
本发明导热片、导热支架和导热管道三者通过焊接或导热绝缘粘接料相互固接，减少了因电动汽车行驶而造成电池单体与导热管路之间的碰撞和滑移，提高了电池组热管理系统的机械强度。
本发明采用导热片、导热支架和导热管道固定连接的方式，导热元件紧贴电池模组的中心表面，尽可能地排除了电池模组和导热管路之间的空气，使得界面热阻大大减少，有助于电池的快速热交换。同时，由于导热片与电池模组中心区域紧密接触且接触面积大，加上导热片的高导热率，对电池有很好的散热效果，同时也有助于提高电池模组温度的整体均一性。
本发明结构紧凑、质量轻便、易组装。导热支架、导热片和导热管道可以事先组装，待加入电池单体并由导热片和导热支架定位后，便可进行电池电极间的串并联连接，安装十分方便。
如上所述，本发明技术手段简便易行，既保证了动力电池组的换热效果 又避免了液体和电池模组的直接接触，降低了电池模组因液体泄漏而发生内部短路的概率，提高了动力电池的使用安全性。
附图说明
图1为本发明动力电池组间接接触式液体冷却/加热装置的俯视示意图。
图2为图1的侧视示意图(从电池中部抛开)。
具体实施方式
下面结合具体实施例对本发明作进一步具体详细描述。
实施例
如图1、2所示。本发明公开了一种动力电池组间接接触式液体冷却/加热装置，包括由电池单体阵列分布而成的多组电池模组4，每组电池模组4之间贴合有导热片2，导热片2的两端分别连接导热支架3，导热支架3的两端分别连接导热管道1，导热管道1内有循环流动的液体介质。导热管道1可采用金属铝、铜、铁等易加工的高导热率材料。
所述导热管道1与外界的换热器或蒸发器的管道相通，该导热片2通过吸收电池模组4工作过程中产生的热量，并通过导热支架3传递给导热管道1；导热管道1内循环流动的液体介质带走导热支架3传递过来的热量；从而避免了液体介质和电池单体的直接接触，降低了发生液体泄漏而导致电池内部短路的概率。
通过改变液体介质在导热管道1内的流速、温度，实现对电池模组4的温度控制。
所述导热支架3的长度方向与导热管道1的轴线垂直；导热支架3的长度方向与导热片2长度方向垂直。当然具体布局可根据实际情况而定。
所述电池模组4与导热片2之间涂覆有导热绝缘胶。导热绝缘胶可采用聚氨醋、有机硅、环氧树脂等粘结材料，其导热率应不小于0.5W/mK，确保其良好的导热性能。
所述导热管道1的内侧为凸台结构11，该导热支架3的两端分别通过该凸台结构11连接导热管道1。
所述液体介质为水、导热油或者水—乙二醇。
所述导热片2的厚度为0.3mm～1.5mm，导热率不低于10W/mK，材质可以是金属铝或者氧化铝；导热片2与电池单体外表面完全贴合，且形状相应，面积等于或者大于电池单体或电池模组的中心发热区域面积，其表面可进行适当的表面处理，如钝化处理，使其有一定的电绝缘强度。所述导热片2的两端与导热支架3的连接处，采用焊接或者导热绝缘胶粘接。
导热支架3可与导热片2的材质相同，其形状为扁平状，厚度在0.8～1.5mm，其高度可根据电池模组4的整体高度或厚度具体而定。
所述导热支架3的两端与导热管道1的连接处，采用焊接或者导热绝缘胶粘接。
所述导热管道1的截面形状为矩形或者圆形，当然其形状、大小可根据电池模组的功率大小和散热需要进行设计。
本发明动力电池组间接接触式液体冷却/加热方法，可通过如下步骤实现：
电池模组冷却步骤：将导热管道1的两端口分别与外界的蒸发器的管道串联，当电池模组温度过高时，启动蒸发器；
该导热片2吸收电池模组4工作过程中产生的热量，并通过导热支架3传递给导热管道5的管壁；再由管壁传递给导热管道5内循环流动的冷却的液体介质，进而将电池模组4工作过程中产生的热量带走；
电池模组加热步骤：将导热管道1的两端口分别与外界的换热器的管道串联，当电池模组温度过低时，启动换热器；
导热管道1内循环流动的加热的液体介质，通过导热管道1的管壁将热量依次传递给导热支架3、导热片2；由导热片2将热量传递给电池模组4内的电池单体；
通过改变液体介质在导热管道1内的流速、温度，实现对电池模组4的 温度控制。
如上所述，便可较好地实现本发明。
本发明的实施方式并不受上述实施例的限制，其他任何未背离本发明的精神实质与原理下所作的改变、修饰、替代、组合、简化，均应为等效的置换方式，都包含在本发明的保护范围之内。

Claims (10)

  1. 一种动力电池组间接接触式液体冷却/加热装置，其特征在于：包括由电池单体阵列分布而成的多组电池模组(4)，每组电池模组(4)之间贴合有导热片(2)，导热片(2)的两端分别连接导热支架(3)，导热支架(3)的两端分别连接导热管道(1)，导热管道(1)内有循环流动的液体介质。
  2. 根据权利要求1所述动力电池组间接接触式液体冷却/加热装置，其特征在于：所述导热管道(1)与外界的换热器或蒸发器的管道相通，该导热片(2)通过吸收电池模组(4)工作过程中产生的热量，并通过导热支架(3)传递给导热管道(1)；导热管道(1)内循环流动的液体介质带走导热支架(3)传递过来的热量；
    通过改变液体介质在导热管道(1)内的流速、温度，实现对电池模组(4)的温度控制。
  3. 根据权利要求1所述动力电池组间接接触式液体冷却/加热装置，其特征在于：所述导热支架(3)的长度方向与导热管道(1)的轴线垂直；导热支架(3)的长度方向与导热片(2)长度方向垂直。
  4. 根据权利要求1至3中任一项所述动力电池组间接接触式液体冷却/加热装置，其特征在于：所述电池模组(4)与导热片(2)之间涂覆有导热绝缘胶；所述导热管道(1)的内侧为凸台结构(11)，该导热支架(3)的两端分别通过该凸台结构(11)连接导热管道(1)。
  5. 根据权利要求4所述动力电池组间接接触式液体冷却/加热装置，其特征在于：所述液体介质为水、导热油或者水—乙二醇。
  6. 根据权利要求4所述动力电池组间接接触式液体冷却/加热装置，其特征在于：所述导热片(2)的厚度为0.3mm～1.5mm，材质为金属铝或者氧化铝；导热片(2)的面积等于或者大于电池单体或电池模组(4)的中心发热区域面积。
  7. 根据权利要求4所述动力电池组间接接触式液体冷却/加热装置，其特征在于：所述导热片(2)的两端与导热支架(3)的连接处，采用焊接或者导热绝缘胶粘接。
  8. 根据权利要求4所述动力电池组间接接触式液体冷却/加热装置，其特征在于：所述导热支架(3)的两端与导热管道(1)的连接处，采用焊接或者导热绝缘胶粘接。
  9. 根据权利要求4所述动力电池组间接接触式液体冷却/加热装置，其特征在于：所述导热管道(1)的截面形状为矩形或者圆形。
  10. 一种动力电池组间接接触式液体冷却/加热方法，其特征在于采用权利要求1至9中任一项所述动力电池组间接接触式液体冷却/加热装置实现，其包括如下步骤：
    电池模组冷却步骤
    将导热管道(1)的两端口，分别与外界的蒸发器的管道串联，电池模组(4)温度高于设定值时，启动蒸发器；
    该导热片(2)吸收电池模组(4)工作过程中产生的热量，并通过导热支架(3)传递给导热管道5的管壁；再由管壁传递给导热管道5内循环流动的冷却的液体介质，进而将电池模组(4)工作过程中产生的热量带走；
    电池模组加热步骤
    将导热管道(1)的两端口，分别与外界的换热器的管道串联，当电池模组(4)温度低于设定值时，启动换热器；
    导热管道(1)内循环流动的加热的液体介质，通过导热管道(1)的管壁将热量依次传递给导热支架(3)、导热片(2)；由导热片(2)将热量传递给电池模组(4)内的电池单体；
    通过改变液体介质在导热管道(1)内的流速、温度，实现对电池模组(4)的温度控制。
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