WO2023040815A1 - 液冷组件 - Google Patents

液冷组件 Download PDF

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Publication number
WO2023040815A1
WO2023040815A1 PCT/CN2022/118364 CN2022118364W WO2023040815A1 WO 2023040815 A1 WO2023040815 A1 WO 2023040815A1 CN 2022118364 W CN2022118364 W CN 2022118364W WO 2023040815 A1 WO2023040815 A1 WO 2023040815A1
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WO
WIPO (PCT)
Prior art keywords
liquid
liquid cooling
plate
cooled
assembly according
Prior art date
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PCT/CN2022/118364
Other languages
English (en)
French (fr)
Inventor
李�昊
刘大为
朱连峻
姚帅
马满堂
周科
刘明义
裴杰
曹传钊
朱勇
曹曦
徐若晨
Original Assignee
中国华能集团清洁能源技术研究院有限公司
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Application filed by 中国华能集团清洁能源技术研究院有限公司 filed Critical 中国华能集团清洁能源技术研究院有限公司
Publication of WO2023040815A1 publication Critical patent/WO2023040815A1/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
    • 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
    • H01M10/615—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
    • H01M10/6554—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
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • 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
    • H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
    • H01M10/6571—Resistive heaters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present disclosure relates to the technical field of battery thermal management, and in particular to a liquid cooling component.
  • the liquid cooling technology used in existing battery modules is The lower box integrates a liquid cooling plate, which is in contact with the bottom of the battery module, and performs thermal management such as cooling or heating of the battery module through the liquid cooling plate.
  • the liquid cold plate at the bottom of the box is connected to the external cooling mechanism through the pipeline, and the coolant circulates in the pipeline to take away the heat of the battery, and then conducts cold and heat exchange through the cooling mechanism integrated in the vehicle.
  • the liquid-cooled plate will exchange heat and cold through the integrated PTC heating mechanism of the vehicle.
  • the liquid cooling plate is integrated in the lower box of the battery module, the lower box is in direct contact with the outside world, and nearly 10% of energy will be wasted due to the heat exchange between the lower box and the outside.
  • the PTC on the vehicle side needs to be heated and then transmitted to the battery module, resulting in a waste of nearly 20% of energy, thereby affecting the cruising range of the vehicle.
  • the present disclosure aims to solve one of the technical problems in the related art at least to a certain extent.
  • the purpose of this disclosure is to propose a liquid cooling assembly.
  • the electric heating plate and the liquid cooling plate By adhering the electric heating plate and the liquid cooling plate on the side of the battery module, the contact between the liquid cooling plate and the electric heating plate and the outside through the lower box is avoided. Heat transfer greatly improves the energy efficiency of the battery system, thereby increasing the cruising range of electric vehicles in summer or winter.
  • the electric heating plate close to the battery module and canceling the heating device that needs to be added outside the battery module, the system cost is greatly reduced. Realize the heating and liquid cooling functions in a small volume, meet the requirements of integration and lightweight design, improve the efficiency of system grouping, and then improve the competitiveness of products.
  • the present disclosure proposes a liquid cooling assembly, including an electric heating plate and a liquid cooling plate, one side of the electric heating plate is attached to the side of the battery module, and the other side of the electric heating plate is connected to the
  • the liquid cooling plate is installed in close contact, and the inside of the liquid cooling plate is a hollow structure.
  • the inside of the liquid cooling plate has liquid cooling flow channels arranged in parallel, and cooling liquid is passed into the liquid cooling flow channel.
  • the liquid-cooled plate includes two oppositely arranged liquid-cooled frame columns and a plurality of liquid-cooled flow channels arranged horizontally and parallelly between the two liquid-cooled frame columns, and the plurality of liquid-cooled flow channels communicate with the liquid-cooled frame columns respectively.
  • a liquid inlet is provided at the upper end of one of the two liquid-cooled frame columns, and a liquid outlet is provided at the upper end of the other.
  • a plurality of the liquid cooling channels are arranged at intervals.
  • flow-increasing pipes are arranged between the plurality of liquid-cooled flow channels.
  • the liquid cooling assembly further includes an insulating plate disposed between the electric heating plate and a side surface of the battery module.
  • the electric heating plate includes a ceramic glass fiber sheet and a resistance wire arranged on the ceramic glass fiber sheet.
  • the resistance wire is a PTC heating wire.
  • the liquid cooling assembly further includes a fixing plate disposed outside the liquid cooling plate.
  • the fixing plate is provided with a fixing hole, and a fixing piece is passed through the fixing hole to fix the fixing plate on the side of the battery module.
  • FIG. 1 is a schematic structural diagram of a liquid cooling assembly proposed by an embodiment of the present disclosure
  • Fig. 2 is a partial structural schematic diagram of a liquid cooling assembly proposed by another embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of an exploded structure of a liquid cooling assembly proposed by an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of a connection structure of a liquid cooling assembly and a battery module proposed by an embodiment of the present disclosure.
  • FIG. 1 is a schematic structural diagram of a liquid cooling assembly proposed by an embodiment of the present disclosure.
  • a liquid cooling assembly includes an electric heating plate and a liquid cooling plate 1, one side of the electric heating plate is attached to the side of the battery module 100, and the other side of the electric heating plate is connected to the liquid cooling plate. 1 Fitting setting, the position of the liquid cooling plate is changed from being integrated at the bottom of the box to being integrated at the side of the battery module 100, which avoids energy loss caused by heat exchange between the box and the external environment.
  • the liquid cooling plate 1 is used to cool the battery module 100, and the electric heating plate is used to heat the battery module 100.
  • the present invention directly heats the battery through the electric heating plate on the side of the battery module 100, reducing the energy loss during heating. .
  • the inside of the liquid-cooled plate 1 is a hollow structure, and the inside of the liquid-cooled plate 1 has liquid-cooled flow channels arranged in parallel.
  • the flow realizes the cooling of the battery module.
  • the liquid-cooled plate 1 is the main structure, which adopts aluminum alloy profiles with a thickness of 6 mm and is cast through a mold, which has good thermal conductivity and a solid overall structure.
  • the liquid-cooled plate 1 includes two oppositely arranged liquid-cooled frame columns 11 and a plurality of liquid-cooled flow channels 12 arranged horizontally and parallelly between the two liquid-cooled frame columns 11 .
  • the liquid-cooled channels 12 communicate with the liquid-cooled frame column 11 respectively, the liquid-cooled frame column 11 is a vertical column, and a plurality of liquid-cooled channels 12 are vertically connected with the liquid-cooled frame column 11, specifically, a plurality of the liquid-cooled frames
  • the cold runners 12 are arranged at intervals, and a window is formed between the liquid cooling runners 12 and the liquid cooling frame column 11. This design can reduce the weight and realize liquid cooling while ensuring the cooling effect of the liquid cooling plate on the battery mold. Component lightweight design.
  • the liquid-cooled frame column 11 and a plurality of liquid-cooled flow channels 12 are integrally formed, specifically, the bottommost liquid-cooled flow channel 12 and two oppositely arranged liquid-cooled frame columns 11 form a U-shaped frame structure, and The joints are smooth and excessive, and the rest of the liquid-cooled flow channels are vertically arranged at intervals, which ensures that the liquid-cooled plate has high structural strength and that the cooling liquid flows smoothly in the liquid-cooled plate.
  • the upper end of one of the two liquid-cooled frame columns 11 is provided with a liquid inlet 4
  • the upper end of the other is provided with a liquid outlet 5
  • the liquid inlet table 2 is connected to the liquid inlet 4
  • the liquid outlet table 3 is connected to the liquid outlet 5.
  • This interface is a quick-plug interface, which has the advantages of small size and light weight. Specifically Therefore, the cooling liquid is introduced from the liquid inlet 4, flows through the liquid cooling channel 12, and flows out from the liquid outlet 5 for recovery. Since the liquid inlet 4 and the liquid outlet 5 are both arranged
  • the upper end of the column 11 can realize the easy access of cooling liquid to the liquid-cooled frame column on one side. After covering the liquid-cooled flow channel in the liquid-cooled plate, it flows out and recovers from the upper end of the liquid-cooled frame column on the other side, realizing Completely cool down the battery module.
  • flow-increasing pipes 13 are arranged in communication between the plurality of liquid-cooling channels 12 , specifically, the flow-increasing pipes 13 are vertically arranged to communicate with the liquid-cooling channels 12 adjacent to the flow-increasing pipes 13 , In this way, the cooling area of the liquid cold plate can be further enlarged, and the cooling capacity of the liquid cold plate can be improved.
  • a liquid cooling assembly further includes an insulating plate 9 arranged between the electric heating plate and the side of the battery module, and the isolation between the battery module and the electric heating plate is realized by arranging the insulating plate 9, thereby improving the safety performance of the cooling assembly , to avoid the occurrence of leakage and short circuit events.
  • the insulating plate 9 is a heat-conducting silica gel sheet containing glass fiber.
  • the heat-conducting silica gel sheet containing glass fiber has the characteristics of high insulation, good resilience, and good deformation.
  • the insulating plate adopts a double-layer structure.
  • the material is made of special ultra-thin fabric, which is strong in weight resistance and operability, and will not be broken or deformed regardless of punching, strip type, or deformed design.
  • the electric heating plate includes a ceramic glass fiber sheet 6 and a resistance wire 8 arranged on the ceramic glass fiber sheet 6, and two heating wires are drawn from the upper end of the resistance wire 8 for external power supply .
  • the ceramic glass fiber sheet 6 is pasted on the inside of the liquid cooling plate 1 through the non-silicon heat-conducting potting film 7, and the resistance wire 8 is molded onto the ceramic glass fiber sheet 6, wherein the ceramic glass fiber sheet 6 is ultra-highly filled ceramic powder and 30um super Thin glass fiber composite material, with a thermal conductivity of 3.5W, has the characteristics of high insulation, low thermal resistance, no oil, and high surface equality.
  • the resistance wire 8 is a PTC heating wire, which is a resistance heating wire made of PTC material. Due to the characteristics of the PTC material, when the temperature reaches a certain threshold, it will not continue to heat up, effectively protecting the battery from overheating, and by adjusting the power density of the PTC heating wire, the temperature can be controlled at 80°C, which prevents overheating. .
  • a liquid cooling assembly further includes a fixing plate 10 arranged on the outside of the liquid cooling plate 1, specifically, the fixing plate 10 is welded to the outer edge of the liquid cooling plate 1, and the fixing plate 10 is used for and The side of the battery module is fixedly connected to fix the liquid cooling plate on the side of the battery module.
  • the fixing plate 10 is provided with fixing holes, and the fixing holes are inserted with fixing parts to fix the fixing plate 10 on the side of the battery module.
  • the fixing The parts are bolts, and there are two fixing holes on both sides of the fixing plate.
  • the fixing plate 10 is fixed to the end plate of the module through the bolts. While being locked by the bolts, the heat exchange of the liquid cooling plate is more suitable.

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Abstract

提出了一种液冷组件，包括电热板和液冷板，所述电热板的一侧贴合电池模组的侧面设置，所述电热板的另一侧和所述液冷板贴合设置，所述液冷板的内部为中空结构，所述液冷板的内具有平行设置的液冷流道，所述液冷流道内通入冷却液。

Description

液冷组件
相关申请的交叉引用
本申请要求在2021年9月14日在中国提交的中国专利申请号202111076941.X的优先权，其全部内容通过引用并入本文。
技术领域
本公开涉及电池热管理技术领域，具体涉及一种液冷组件。
背景技术
随着新能源汽车不断发展，电池的容量不断的提高，电池模组的能量密度也不断的加大，相应的电池模组的发热量会逐渐增多，现有电池模组采用的液冷技术为下箱体集成液冷板，液冷板与电池模组底部接触，通过液冷板进行电池模组的冷却或加热等热管理。当电池系统需要冷却时，箱体底部液冷板通过管路和外部冷却机构相连，管路中循环冷却液，将电池热量带走，再通过整车集成的的冷却机构进项冷热交换。当电池系统需要加热时，液冷板再通过整车集成PTC加热机构进行冷热交换。由于液冷板集成在电池模组下箱体，下箱体和外界直接接触，会导致将近10％能源因下箱体和外部的热交换而浪费。其次，当电池系统处于加热模式下，尤其是冬天低温环境下，需要整车端PTC加热再传到电池模组，导致将近20％能源的浪费，从而影响整车的续航里程。
发明内容
本公开旨在至少在一定程度上解决相关技术中的技术问题之一。
为此，本公开的目的在于提出一种液冷组件，通过将电热板和液冷板贴合设置在电池模组的侧面，避免了液冷板和电热板工作时通过下箱体与外界的热传输，大幅提高电池系统能量效率，从而提高电动车夏季或冬季的续航里程，通过贴近电池模组的电热板设计，并取消了电池模组外部需要增加的加热装置，从而大幅减少系统成本，实现小体积下加热和液冷功能，具满足集成化和轻量化设计，提高系统成组效率，进而提高产品竞争性。
为达到上述目的，本公开提出的一种液冷组件，包括电热板和液冷板，所述电热板的一侧贴合电池模组的侧面设置，所述电热板的另一侧和所述液冷板贴合设置，所述液冷板的内部为中空结构，所述液冷板的内具有平行设置的液冷流道，所述液冷流道内通入冷却液。
在一个实施例中，所述液冷板包括两相对设置的液冷框柱和水平平行设置在两所述液冷框柱之间的多个液冷流道，多个所述液冷流道分别和所述液冷框柱连通。
在一个实施例中，两个所述液冷框柱其中一个的上端设置进液口，另一个的上端设置出液口。
在一个实施例中，多个所述液冷流道间隔设置。
在一个实施例中，多个所述液冷流道之间连通设置有增流管道。
在一个实施例中，所述液冷组件还包括设置在所述电热板和所述电池模组侧面之间的绝缘板。
在一个实施例中，所述电热板包括陶瓷玻纤片和设置于所述陶瓷玻纤片上的电阻丝。
在一个实施例中，所述电阻丝为PTC加热丝。
在一个实施例中，所述液冷组件还包括设置在所述液冷板外侧的固定板。
在一个实施例中，所述固定板上设置有固定孔位，所述固定孔位穿插有固定件以将所述固定板固定在所述电池模组的侧面。
本公开附加的方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本公开的实践了解到。
附图说明
本公开上述的和/或附加的方面和优点从下面结合附图对实施例的描述中将变得明显和容易理解，其中：
图1是本公开一实施例提出的液冷组件的结构示意图；
图2是本公开另一实施例提出的液冷组件的局部结构示意图；
图3是本公开一实施例提出的液冷组件的分解结构示意图；
图4是本公开一实施例提出的液冷组件和电池模组的连接结构示意图。
具体实施方式
下面详细描述本公开的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本公开，而不能理解为对本公开的限制。相反，本公开的实施例包括落入所附加权利要求书的精神和内涵范围内的所有变化、修改和等同物。
图1是本公开一实施例提出的一种液冷组件的结构示意图。
参见图1，一种液冷组件，包括电热板和液冷板1，所述电热板的一侧贴合电池模组100的侧面设置，所述电热板的另一侧和所述液冷板1贴合设置，液冷板位置由集成在箱体底 部变为集成到电池模组100侧面，避免了箱体与外界环境的热交换导致的能量损失。液冷板1用于对电池模组100进行冷却，电热板用于对电池模组100进行加热升温，本发明直接通过电池模组100侧面的电热板对电池加热，减少了加热时的能量损失。所述液冷板1的内部为中空结构，所述液冷板1的内具有平行设置的液冷流道，所述液冷流道内通入冷却液，通过冷却液在液冷板内的循环流动实现对电池模组的冷却降温。本实施例中，液冷板1为主体结构，采用6mm后的铝合金型材，通过模具铸造，具有较好的导热性能，且整体结构坚固。
如图1所示，所述液冷板1包括两相对设置的液冷框柱11和水平平行设置在两所述液冷框柱11之间的多个液冷流道12，多个所述液冷流道12分别和所述液冷框柱11连通，液冷框柱11为立式柱，多个液冷流道12和液冷框柱11垂直连通，具体地，多个所述液冷流道12间隔设置，液冷流道12和液冷框柱11之间围合形成窗口，在保证液冷板对电池模的冷却效果的情况下，此种设计能够减轻自重，实现液冷组件轻量化设计。
其中，液冷框柱11和多个液冷流道12为一体成型设置，具体地，最底端的液冷流道12和两相对设置的液冷框柱11围合形成u型框结构，且其连接处圆滑过度，其余液冷流道在竖向上依次间隔排列设置，这样保证了液冷板具有较高的结构强度，且冷却液在液冷板内流动顺畅。
如图3所示，两个所述液冷框柱11其中一个的上端设置进液口4，另一个的上端设置出液口5。在一个具体实施例中，在进液口4处连接有进液台2，在出液口5处连接有出液台3，该接口为快插接口，具备体积小，质量轻等优势，具体地，从进液口4处通入冷却液，流经液冷流道12后，从出液口5流出进行回收，由于进液口4和出液口5均设置在两侧的液冷框柱11的上端，能够实现冷却液在一侧的液冷框柱的易通入，布满液冷板内的液冷流道后，从另一侧的液冷框柱的上端流出回收，实现完全彻底的对电池模组的冷却降温。
如图1所示，多个所述液冷流道12之间连通设置有增流管道13，具体地，增流管道13竖向布置，连通增流管道13相邻的液冷流道12，这样能够进一步增大液冷板的冷却区域，提高液冷板的冷却能力。
一种液冷组件还包括设置在所述电热板和所述电池模组侧面之间的绝缘板9，通过设置绝缘板9实现电池模组和电热板之间的隔离，提高冷却组件的安全性能，避免漏电短路事件的发生。本实施例中，绝缘板9为含玻纤导热硅胶片，含玻纤导热硅胶片具有高绝缘性、回弹性好、变形量好的特点，本实施例中绝缘板采用双层结构，补强材采用专用超薄织物，抗重性强，可操作性强，无论冲孔、条带式、畸形设计都不会打破和变型。
如图2和图3所示，所述电热板包括陶瓷玻纤片6和设置于所述陶瓷玻纤片6上的电阻丝8，电阻丝8的上端引出两根加热导线，用于外接电源。陶瓷玻纤片6通过非硅导热 灌封胶片7贴在液冷板1内侧，电阻丝8模压到陶瓷玻纤片6上，其中，陶瓷玻纤片6为超高填充陶瓷粉体和30um超薄玻璃纤维复合材料，导热系数为3.5W，具备高绝缘，低热阻，不出油，表面高平等特性。
如图2所示，所述电阻丝8为PTC加热丝，采用PTC材质电阻加热丝。由于PTC材质特性，当温度到达一定阈值时，不会再持续升温，有效的保护了电池过加热的情况，并且通过调整PTC加热丝功率密度，可以把温度控制在80℃，具备防止过加热状态。
如图4所示，一种液冷组件还包括设置在所述液冷板1外侧的固定板10，具体地，固定板10和液冷板1的外边缘焊接连接，固定板10用于和电池模组的侧面固定连接以将液冷板固定贴合在电池模组侧面。
如图3所示，所述固定板10上设置有固定孔位，所述固定孔位穿插有固定件以将所述固定板10固定在所述电池模组的侧面，本实施例中，固定件为螺栓，固定板两侧分别开设有2个固定孔位，通过螺栓将固定板10固定到模组端板上，在通过螺栓锁紧的同时，保障液冷板更加贴合的热交换。
需要说明的是，在本公开的描述中，术语“第一”、“第二”等仅用于描述目的，而不能理解为指示或暗示相对重要性。此外，在本公开的描述中，除非另有说明，“多个”的含义是两个或两个以上。
流程图中或在此以其他方式描述的任何过程或方法描述可以被理解为，表示包括一个或更多个用于实现特定逻辑功能或过程的步骤的可执行指令的代码的模块、片段或部分，并且本公开的优选实施方式的范围包括另外的实现，其中可以不按所示出或讨论的顺序，包括根据所涉及的功能按基本同时的方式或按相反的顺序，来执行功能，这应被本公开的实施例所属技术领域的技术人员所理解。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管上面已经示出和描述了本公开的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本公开的限制，本领域的普通技术人员在本公开的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (10)

  1. 一种液冷组件，包括电热板和液冷板，所述电热板的一侧贴合电池模组的侧面设置，所述电热板的另一侧和所述液冷板贴合设置，所述液冷板的内部为中空结构，所述液冷板的内具有平行设置的液冷流道，所述液冷流道内通入冷却液。
  2. 如权利要求1所述的液冷组件，其中所述液冷板包括两相对设置的液冷框柱和水平平行设置在两所述液冷框柱之间的多个液冷流道，多个所述液冷流道分别和所述液冷框柱连通。
  3. 如权利要求2所述的液冷组件，其中两个所述液冷框柱其中一个的上端设置进液口，另一个的上端设置出液口。
  4. 如权利要求2或3所述的液冷组件，其中多个所述液冷流道间隔设置。
  5. 如权利要求4所述的液冷组件，其中多个所述液冷流道之间连通设置有增流管道。
  6. 如权利要求1至5中任一项所述的液冷组件，还包括设置在所述电热板和所述电池模组侧面之间的绝缘板。
  7. 如权利要求1至6中任一项所述的液冷组件，其中所述电热板包括陶瓷玻纤片和设置于所述陶瓷玻纤片上的电阻丝。
  8. 如权利要求7所述的液冷组件，其中所述电阻丝为PTC加热丝。
  9. 如权利要求1至8中任一项所述的液冷组件，还包括设置在所述液冷板外侧的固定板。
  10. 如权利要求9所述的液冷组件，其中所述固定板上设置有固定孔位，所述固定孔位穿插有固定件以将所述固定板固定在所述电池模组的侧面。
PCT/CN2022/118364 2021-09-14 2022-09-13 液冷组件 WO2023040815A1 (zh)

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