CN110380152A - A kind of novel battery thermal management module and its control method - Google Patents

A kind of novel battery thermal management module and its control method Download PDF

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CN110380152A
CN110380152A CN201910521669.8A CN201910521669A CN110380152A CN 110380152 A CN110380152 A CN 110380152A CN 201910521669 A CN201910521669 A CN 201910521669A CN 110380152 A CN110380152 A CN 110380152A
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water
valve
pump
cold
tank
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CN110380152B (en
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解宇飞
吕航
孔为
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Zhejiang Zero Run Technology Co Ltd
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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
    • H01M10/61—Types of temperature control
    • H01M10/617—Types of temperature control for achieving uniformity or desired distribution of 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
    • H01M10/62—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
    • H01M10/63—Control systems
    • H01M10/635—Control systems based on ambient 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
    • H01M10/655—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
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • 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

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Automation & Control Theory (AREA)
  • Secondary Cells (AREA)

Abstract

The present invention relates to battery O&M technical fields, and in particular to a kind of novel battery thermal management module and its control method.A kind of novel battery thermal management module, including controller, water pump, cold water adjustable valve, hot water adjustable valve, heater and heat exchanger, the water outlet of the built-in water pipe of battery pack is connect with the water inlet of heater water inlet and heat exchanger, heater water outlet is connect by hot water adjustable valve with pump intake, the water outlet of heat exchanger is connect by cold water adjustable valve with pump intake, the water inlet connection of the built-in water pipe of pump outlet and battery pack.A kind of control method of novel battery thermal management module, comprising: A) it obtains and controls water inlet temperature；B) periodically-varied water (flow) direction.Substantial effect of the invention is: facilitate design and deployment；Keep temperature management more accurate, reduces temperature fluctuation；Keep the battery core temperature in battery pack more uniform, improves the battery core service life.

Description

一种新型电池热管理模块及其控制方法A novel battery thermal management module and its control method

技术领域technical field

本发明涉及电池运维技术领域，具体涉及一种新型电池热管理模块及其控制方法。The invention relates to the technical field of battery operation and maintenance, in particular to a novel battery thermal management module and a control method thereof.

背景技术Background technique

电池，主要指电动汽车上使用的电池包，尤其是锂离子电芯串联组成的电池包，需要运行在合理的温度区间内。如果温度过高，会有自燃的危险，如果温度低于下限阈值，则会影响电池能够有效输出的电量及电压，降低电池包的性能。因而电池包均需要部署温度管理装置，在温度较高时，给电池包降温，在温度较低时，给电池包加热，提高电池包温度。目前电池热管理系统均需要板式换热器、PTC加热器、电磁阀和水泵四个主要零部件，通过管线路与空调及电池相连后实现电池的热管理。主要实现方式为：板式换热器与空调之间需空调管相连，水泵与电磁阀串联并通过电磁阀控制水路通断，从而切换板式换热器及PTC对水路加热或冷却，每个零部件均需与低压线束进行相连。此种方式具有以下不足：一、需要考虑全部零部件的装配，还需考虑彼此管路的连接与走向，在车辆后续维修方面对热管理系统的维修也有较高的成本代价。二、不能精细控制冷却水进入电池包时的温度，容易造成电池包温度在平衡温度附近振荡的问题。因而需要研制一种安装方便简单、温度控制精准的电池热管理方案。Batteries mainly refer to the battery packs used in electric vehicles, especially the battery packs composed of lithium-ion cells connected in series, which need to operate within a reasonable temperature range. If the temperature is too high, there will be a risk of spontaneous combustion. If the temperature is lower than the lower threshold, it will affect the effective output power and voltage of the battery and reduce the performance of the battery pack. Therefore, all battery packs need to deploy a temperature management device. When the temperature is high, the temperature of the battery pack is cooled, and when the temperature is low, the battery pack is heated to increase the temperature of the battery pack. At present, the battery thermal management system requires four main components: a plate heat exchanger, a PTC heater, a solenoid valve and a water pump, which are connected to the air conditioner and the battery through pipelines to achieve thermal management of the battery. The main implementation method is: the plate heat exchanger and the air conditioner need to be connected with the air conditioning pipe, the water pump is connected in series with the solenoid valve and the water circuit is controlled by the solenoid valve, so as to switch the plate heat exchanger and PTC to heat or cool the water circuit. All need to be connected with the low-voltage wiring harness. This method has the following disadvantages: 1. It is necessary to consider the assembly of all parts, and the connection and direction of the pipelines. In the subsequent maintenance of the vehicle, the maintenance of the thermal management system also has a relatively high cost. Second, the temperature when the cooling water enters the battery pack cannot be finely controlled, which may easily cause the temperature of the battery pack to oscillate near the equilibrium temperature. Therefore, it is necessary to develop a battery thermal management solution that is easy to install and precise in temperature control.

如中国专利CN205609706U，公开日2016年9月28日，一种电池模块的热管理系统，包括用以容纳电池模块密封的电池箱体，换热器，以及多组超导热板；所述的超导热铝板一端与换热器连接以进行热交换，另一端被夹持定位在电池模块之间；所述的换热器设置在所述的电池箱体的外部并串接在温控回路上，所述的电池模块上设有与BMS连接的温度传感器，所述的BMS控制所述的温控回路以对所述的换热器加热或者冷却。其技术方案采用水冷代替风冷，将电池模块封闭在电池箱体内部，可以防止灰尘进入以及雨水灌入。但其不能解在电池包部署在电动汽车上时，其水冷系统的水管布线复杂，和温度控制不够精细的技术问题。For example, Chinese patent CN205609706U, published on September 28, 2016, a thermal management system for a battery module, including a sealed battery box for accommodating the battery module, a heat exchanger, and multiple sets of superconducting plates; One end of the superconducting thermal aluminum plate is connected to the heat exchanger for heat exchange, and the other end is clamped and positioned between the battery modules; the heat exchanger is arranged outside the battery box and connected in series to the temperature control circuit Above, the battery module is provided with a temperature sensor connected to the BMS, and the BMS controls the temperature control circuit to heat or cool the heat exchanger. Its technical solution uses water cooling instead of air cooling, and the battery module is sealed inside the battery box to prevent dust from entering and rain from entering. However, it cannot solve the technical problems of complicated water pipe wiring of the water cooling system and insufficient temperature control when the battery pack is deployed on an electric vehicle.

发明内容Contents of the invention

本发明要解决的技术问题是：目前缺乏部署方便、温度控制精准的电池热管理方案的技术问题。提出了一种部署方便水管连接简单的新型电池热管理模块及其控制方法。该技术方案还具有温度控制更加精准和均匀的技术效果。The technical problem to be solved by the present invention is: currently, there is a lack of a battery thermal management solution with convenient deployment and precise temperature control. A new type of battery thermal management module and its control method with convenient deployment and simple water pipe connection are proposed. The technical solution also has the technical effect of more precise and uniform temperature control.

为解决上述技术问题，本发明所采取的技术方案为：一种新型电池热管理模块，与电池包的内置水管的进水口以及出水口连接，并通过散热水管与散热水管连接，电池包的内置水管的出水口安装有温度测量单元，测量电池包的内置水管的出水口水体温度，包括控制器、水泵、冷水量调节阀、热水量调节阀、加热器和热交换器，冷水量调节阀、热水量调节阀、水泵以及温度测量单元均与控制器连接，电池包的内置水管的出水口与加热器进水口以及热交换器的进水口连接，加热器出水口通过热水量调节阀与水泵进水口连接，热交换器的出水口通过冷水量调节阀与水泵进水口连接，水泵出水口与电池包的内置水管的进水口连接。通过冷水量调节阀以及热水量调节阀的开度比的调节，获得最适宜的进水口水温，使温度管理更精准，减小温度波动。In order to solve the above technical problems, the technical solution adopted by the present invention is: a new type of battery thermal management module, which is connected to the water inlet and water outlet of the built-in water pipe of the battery pack, and connected to the heat dissipation water pipe through the heat dissipation water pipe, and the built-in water pipe of the battery pack The water outlet of the water pipe is equipped with a temperature measuring unit to measure the temperature of the water body at the water outlet of the built-in water pipe of the battery pack, including a controller, a water pump, a cold water regulating valve, a hot water regulating valve, a heater and a heat exchanger, and a cold water regulating valve , hot water volume regulating valve, water pump and temperature measuring unit are all connected to the controller, the water outlet of the built-in water pipe of the battery pack is connected to the water inlet of the heater and the water inlet of the heat exchanger, and the water outlet of the heater passes through the hot water volume regulating valve It is connected to the water inlet of the water pump, the water outlet of the heat exchanger is connected to the water inlet of the water pump through the cold water regulating valve, and the water outlet of the water pump is connected to the water inlet of the built-in water pipe of the battery pack. Through the adjustment of the opening ratio of the cold water regulating valve and the hot water regulating valve, the most suitable water temperature at the water inlet is obtained, so that the temperature management is more accurate and the temperature fluctuation is reduced.

作为优选，还包括左进流阀、左回流阀、右进流阀、右回流阀和回流水箱，左进流阀第一端以及右进流阀第一端均与水泵出水口连通，左进流阀第二端以及左回流阀的第一端均与电池包的内置水管的进水口连通，右进流阀第二端以及右回流阀的第一端均与电池包的内置水管的出水口连通，左回流阀的第二端以及右回流阀的第二端均与回流水箱连通，回流水箱与加热器进水口以及热交换器的进水口连通，左进流阀、左回流阀、右进流阀以及右回流阀均与控制器连接。电池包是由许多个电压仅3.7V左右的锂电芯，串联起来，组成380V甚至更高输出电压的电池包。靠近电池包的内置水管的进水口处的电芯，与水体具有最大的温差，能够有效的进行热交换，随着热交换的进行，水体温度亦发生变化，不仅导致远离进水口处的电芯，与水体的温差较低，热交换效率降低，而且最终热平衡时的温度也不同，导致靠近进水口处的电芯温度与远离进水口处的电芯温度存在明显的差异，进而导致电池包内电芯电压以及电芯内阻的不均衡，影响电池包整体的性能和寿命。通过将电池包的内置水管的进水口和出水口周期性交替互换，可以使电池包内的电芯温度更加均匀，提高电芯寿命。As preferably, it also includes a left inlet valve, a left backflow valve, a right inlet valve, a right backflow valve and a backflow water tank, the first end of the left inlet valve and the first end of the right inlet valve are all communicated with the water pump outlet, and the left inlet The second end of the flow valve and the first end of the left backflow valve are connected to the water inlet of the built-in water pipe of the battery pack, and the second end of the right inlet valve and the first end of the right backflow valve are connected to the water outlet of the built-in water pipe of the battery pack. Connected, the second end of the left return valve and the second end of the right return valve are connected with the return water tank, the return water tank is connected with the water inlet of the heater and the water inlet of the heat exchanger, the left inlet valve, the left return valve, the right inlet Both the flow valve and the right return valve are connected with the controller. The battery pack is composed of many lithium cells with a voltage of only about 3.7V, which are connected in series to form a battery pack with an output voltage of 380V or even higher. The battery cell near the water inlet of the built-in water pipe of the battery pack has the largest temperature difference with the water body, which can effectively exchange heat. As the heat exchange proceeds, the temperature of the water body also changes, which not only causes the battery cells far away from the water inlet , the temperature difference with the water body is low, the heat exchange efficiency is reduced, and the temperature at the final heat balance is also different, resulting in a significant difference in the temperature of the battery cells near the water inlet and the temperature of the battery cells far from the water inlet, which in turn leads to The imbalance of cell voltage and cell internal resistance affects the overall performance and life of the battery pack. By periodically exchanging the water inlet and water outlet of the built-in water pipe of the battery pack, the temperature of the battery cells in the battery pack can be made more uniform and the life of the battery cells can be improved.

作为优选，还包括气压调节阀，所述气压调节阀安装在回流水箱上，气压调节阀的开闭受控制器的控制。气压调节阀能够调节水体体积因随温度变化导致的水体压力波动。Preferably, an air pressure regulating valve is also included, the air pressure regulating valve is installed on the return water tank, and the opening and closing of the air pressure regulating valve is controlled by the controller. The air pressure regulating valve can adjust the pressure fluctuation of the water body caused by the change of the water body volume with the temperature.

作为优选，还包括热回流水泵、冷回流水泵、热储水箱以及冷储水箱，热回流水泵以及冷回流水泵的进水口均与回流水箱连通，热回流水泵的出水口加热器的进水口连通，冷回流水泵的出水口热交换器的进水口连通，加热器的出水口与热储水箱进水口连通，热交换器的出水口与冷储水箱的进水口连通，热储水箱的出水口通过热水量调节阀与水泵进水口连通，冷储水箱的出水口通过冷水量调节阀与水泵进水口连通，热储水箱以及冷储水箱均安装有气压调节阀以及液位计，所述两个气压调节阀以及液位计均与控制器连接。通过设置热储水箱以及冷储水箱，在电池包的温度出现短期的快速变化时，能够将其内存储的热水或冷水，加速输入到电池包的内置水管内，使电池包的温度更快的恢复到最佳温度区间，提高电池包应对温度突变的能力。Preferably, it also includes a hot return water pump, a cold return water pump, a hot water storage tank and a cold water storage tank, the water inlets of the hot return water pump and the cold return water pump are all communicated with the return water tank, and the water outlet heater of the hot return water pump is communicated with the water inlet, The water outlet of the cold return pump is connected to the water inlet of the heat exchanger, the water outlet of the heater is connected to the water inlet of the hot water storage tank, the water outlet of the heat exchanger is connected to the water inlet of the cold water storage tank, and the water outlet of the hot water storage tank is connected to the water inlet of the hot water storage tank. The water regulating valve is connected to the water inlet of the water pump, and the water outlet of the cold storage tank is connected to the water inlet of the water pump through the cold water regulating valve. Both the regulating valve and the liquid level gauge are connected with the controller. By setting the hot water storage tank and the cold water storage tank, when the temperature of the battery pack changes rapidly in a short period of time, the hot or cold water stored in it can be quickly input into the built-in water pipe of the battery pack, so that the temperature of the battery pack is faster The recovery to the optimal temperature range improves the ability of the battery pack to cope with sudden temperature changes.

作为优选，所述回流水箱底部设置有若干个隔条，所述若干个隔条均与回流箱底部紧密固定连接，所述若干个隔条横竖交织将回流箱底部分割为若干个方形凹腔。隔条形成的凹腔具有容纳异物的功能，能够将因水体冲刷以及磨损脱落的细小材料杂质捕获，限制在凹腔内，起到净化冷却水体的功能。Preferably, the bottom of the return tank is provided with several spacers, and the several spacers are tightly and fixedly connected with the bottom of the return tank, and the several spacers interweave horizontally and vertically to divide the bottom of the return tank into several square cavities. The concave cavity formed by the spacers has the function of containing foreign matter, and can capture the fine material impurities that are eroded by the water body and worn off, and confine them in the concave cavity, so as to purify the cooling water.

作为优选，所述隔条顶部的厚度大于隔条底部的厚度。提高凹腔留住杂质的能力。Preferably, the thickness of the top of the spacer is greater than the thickness of the bottom of the spacer. Improve the ability of the cavity to retain impurities.

作为优选，还包括外壳，所述控制器、水泵、冷水量调节阀、热水量调节阀、加热器、热交换器、左进流阀、左回流阀、右进流阀、右回流阀、回流水箱、热回流水泵、冷回流水泵、热储水箱以及冷储水箱均安装在壳体内。外壳不仅能够防尘，还具有一定的保温功能，减小热储水箱以及冷储水箱内水体温度受外界环境的影响。Preferably, it also includes a housing, the controller, the water pump, the cold water regulating valve, the hot water regulating valve, the heater, the heat exchanger, the left inlet valve, the left return valve, the right inlet valve, the right return valve, The return water tank, the hot return water pump, the cold return water pump, the hot water storage tank and the cold water storage tank are all installed in the casing. The shell is not only dust-proof, but also has a certain heat preservation function, which reduces the temperature of the water body in the hot water storage tank and the cold water storage tank from being affected by the external environment.

作为优选，所述外壳为具有保温功能的外壳。如为双层外壳，层间填充空气或隔热材料。隔热材料需为阻燃材料。Preferably, the outer shell is an outer shell with heat preservation function. In the case of a double-layer shell, the layers are filled with air or insulating material. Insulation materials must be flame retardant materials.

一种如前述的新型电池热管理模块的控制方法，包括以下步骤：A)控制器读取温度测量单元的读数，根据电池包的内置水管的出水口内的水温，计算得出所需散热水管的进水口的水温，控制器控制冷水量调节阀以及热水量调节阀的开度比，混合后得到所需的水温；B)控制器控制左进流阀以及右回流阀开启，左回流阀以及右进流阀关闭，控制器控制水泵运转时间T1，停止运转T2时间，而后控制器控制左回流阀以及右进流阀开启，左进流阀以及右回流阀关闭，控制器控制水泵运转时间T1，停止运转T2时间；C)重复步骤A至B。A control method for a new type of battery thermal management module as described above, comprising the following steps: A) The controller reads the reading of the temperature measurement unit, and calculates the temperature of the required heat dissipation water pipe according to the water temperature in the water outlet of the built-in water pipe of the battery pack. The water temperature at the water inlet, the controller controls the opening ratio of the cold water regulating valve and the hot water regulating valve, and the required water temperature is obtained after mixing; B) The controller controls the opening of the left inflow valve and the right backflow valve, the left backflow valve and The right inlet valve is closed, the controller controls the water pump to run for T1, and the time for stopping the operation is T2, then the controller controls the left backflow valve and the right inlet valve to open, the left inlet valve and the right backflow valve are closed, and the controller controls the water pump to run for T1 , stop running for T2 time; C) repeat steps A to B.

作为优选，步骤B还包括以下子步骤：控制器控制水泵、热回流水泵以及冷回流水泵的转速，使热储水箱以及冷储水箱液位基本稳定；当检测到电池包的内置水管的出水口内的水温上升或下降速率超过设定阈值时，加快水泵的转速，但保持热回流水泵以及冷回流水泵的转速，直至热储水箱或者冷储水箱液位低于设定水位下阈值；加快热回流水泵以及冷回流水泵的转速，直至热储水箱或者冷储水箱液位高于设定水位上阈值。Preferably, step B also includes the following sub-steps: the controller controls the speeds of the water pump, the hot return water pump and the cold return water pump, so that the liquid levels of the hot water storage tank and the cold water storage tank are basically stable; When the rising or falling rate of the water temperature exceeds the set threshold, speed up the speed of the water pump, but keep the speed of the hot return water pump and the cold return water pump until the liquid level of the hot water storage tank or the cold water storage tank is lower than the lower threshold of the set water level; speed up the hot return flow The speed of the water pump and the cold return water pump is increased until the liquid level of the hot water storage tank or the cold water storage tank is higher than the set water level upper threshold.

本发明的实质性效果是：通过将零部件集中到外壳内，仅通过预留的水管接口分别为电池包的内置水管以及散热器连接，使需要布设的水管数量大幅下降，方便设计以及部署；通过冷水量调节阀以及热水量调节阀的开度比的调节，获得最适宜的进水口水温，使温度管理更精准，减小温度波动；通过将电池包的内置水管的进水口和出水口周期性交替互换，可以使电池包内的电芯温度更加均匀，提高电芯寿命；通过设置热储水箱以及冷储水箱，在电池包的温度出现短期的快速变化时，能够将其内存储的热水或冷水，加速输入到电池包的内置水管内，使电池包的温度更快的恢复到最佳温度区间，提高电池包应对温度突变的能力。The substantive effect of the present invention is: by concentrating the parts into the casing, the built-in water pipes of the battery pack and the radiator are connected only through the reserved water pipe interfaces, so that the number of water pipes to be laid is greatly reduced, and the design and deployment are convenient; Through the adjustment of the opening ratio of the cold water regulating valve and the hot water regulating valve, the most suitable water temperature of the water inlet is obtained, the temperature management is more accurate, and the temperature fluctuation is reduced; by connecting the water inlet and outlet of the built-in water pipe of the battery pack Periodic alternate exchange can make the temperature of the battery cells in the battery pack more uniform and improve the battery life; The hot or cold water can be quickly input into the built-in water pipe of the battery pack, so that the temperature of the battery pack can be restored to the optimal temperature range faster, and the ability of the battery pack to cope with sudden temperature changes can be improved.

附图说明Description of drawings

图1为实施例一安装关系示意图。Fig. 1 is a schematic diagram of the installation relationship of Embodiment 1.

图2为实施例一结构示意图。Fig. 2 is a schematic structural diagram of Embodiment 1.

图3为实施例二结构示意图。Fig. 3 is a structural schematic diagram of the second embodiment.

其中：1、电池包，2、进水口，3、热管理模块，4、出水口，5、散热器，6、散热水管，31、外壳，321、左回流阀，322、左进流阀，323、右进流阀，324、右回流阀，33、水泵，341、冷水量调节阀，342、热水量调节阀，35、回流水箱，36、加热器，361、热回流水泵，37、热交换器，371、冷回流水泵，38、热储水箱，381、气压调节阀，39、冷储水箱。Among them: 1. Battery pack, 2. Water inlet, 3. Thermal management module, 4. Water outlet, 5. Radiator, 6. Heat dissipation water pipe, 31. Shell, 321. Left return valve, 322. Left inlet valve, 323, right inflow valve, 324, right return valve, 33, water pump, 341, cold water volume regulating valve, 342, hot water volume regulating valve, 35, return water tank, 36, heater, 361, heat return water pump, 37, Heat exchanger, 371, cold return water pump, 38, heat storage tank, 381, air pressure regulating valve, 39, cold storage tank.

具体实施方式Detailed ways

下面通过具体实施例，并结合附图，对本发明的具体实施方式作进一步具体说明。The specific embodiments of the present invention will be further specifically described below through specific embodiments in conjunction with the accompanying drawings.

实施例一：Embodiment one:

一种新型电池热管理模块，如图1所示，本实施例热管理模块3具有外壳31，外壳31上预留有四个水管接口，其中两个水管接口分别与电池包1的内置水管的进水口2以及出水口4连接，另外两个水管接口分别通过散热水管6与散热器5的进水口以及出水口4连接。散热器5为具有主动热交换功能的散热器5，而非简单的金属片，如空调。A new type of battery thermal management module, as shown in Figure 1, the thermal management module 3 of this embodiment has a casing 31, and four water pipe interfaces are reserved on the casing 31, two of which are respectively connected to the built-in water pipes of the battery pack 1 The water inlet 2 and the water outlet 4 are connected, and the other two water pipe interfaces are respectively connected with the water inlet and the water outlet 4 of the radiator 5 through the cooling water pipe 6 . The radiator 5 is a radiator 5 with an active heat exchange function, rather than a simple metal sheet, such as an air conditioner.

如图2所示，本实施例包括控制器、水泵33、冷水量调节阀341、热水量调节阀342、加热器36、热交换器37、左进流阀322、左回流阀321、右进流阀323、右回流阀324和回流水箱35，冷水量调节阀341、热水量调节阀342、水泵33、温度测量单元、左进流阀322、左回流阀321、右进流阀323以及右回流阀324均与控制器连接，左进流阀322第一端以及右进流阀323第一端均与水泵33出水口连通，左进流阀322第二端以及左回流阀321的第一端均与电池包1的内置水管的进水口2连通，右进流阀323第二端以及右回流阀324的第一端均与电池包1的内置水管的出水口4连通，构成能够交换水流方向的管道。左回流阀321的第二端以及右回流阀324的第二端均与回流水箱35连通，回流水箱35具有低洼部，加热器36进水口以及热交换器37的进水口与低洼部连通。回流水箱35底部设置有若干个隔条，若干个隔条均与回流箱底部紧密固定连接，若干个隔条横竖交织将回流箱底部分割为若干个方形凹腔。隔条顶部的厚度大于隔条底部的厚度。回流水箱35上安装有气压调节阀381，以平衡水体体积的变化带来压力变化。As shown in Figure 2, this embodiment includes a controller, a water pump 33, a cold water regulating valve 341, a hot water regulating valve 342, a heater 36, a heat exchanger 37, a left inlet valve 322, a left return valve 321, a right Inlet valve 323, right backflow valve 324 and backflow water tank 35, cold water volume regulating valve 341, hot water volume regulating valve 342, water pump 33, temperature measuring unit, left inflow valve 322, left backflow valve 321, right inflow valve 323 And the right backflow valve 324 is connected with the controller, the first end of the left inflow valve 322 and the first end of the right inflow valve 323 are connected with the water outlet of the water pump 33, the second end of the left inflow valve 322 and the left backflow valve 321 The first end is connected with the water inlet 2 of the built-in water pipe of the battery pack 1, and the second end of the right inlet valve 323 and the first end of the right return valve 324 are connected with the water outlet 4 of the built-in water pipe of the battery pack 1, forming a Swap the pipes in the direction of the water flow. The second end of the left backflow valve 321 and the second end of the right backflow valve 324 are both in communication with the backflow water tank 35 , the backflow water tank 35 has a low-lying part, and the water inlet of the heater 36 and the water inlet of the heat exchanger 37 communicate with the low-lying part. The bottom of the backflow tank 35 is provided with several spacers, which are tightly and fixedly connected with the bottom of the backflow tank, and the bottom of the backflow box is divided into several square cavities by the horizontal and vertical interweaving of several spacers. The top of the spacer is thicker than the bottom of the spacer. An air pressure regulating valve 381 is installed on the backflow water tank 35 to balance the pressure change caused by the volume change of the water body.

本实施例的控制方法为：The control method of this embodiment is:

A)控制器读取温度测量单元的读数，根据电池包1的内置水管的出水口4内的水温，计算得出所需散热水管6的进水口的水温，控制器控制冷水量调节阀341以及热水量调节阀342的开度比，混合后得到所需的水温；B)控制器控制左进流阀322以及右回流阀324开启，左回流阀321以及右进流阀323关闭，控制器控制水泵33运转时间T1，停止运转T2时间，而后控制器控制左回流阀321以及右进流阀323开启，左进流阀322以及右回流阀324关闭，控制器控制水泵33运转时间T1，停止运转T2时间；C)重复步骤A至B。计算得出所需散热水管6的进水口的水温，具体方法为：设定最佳工作温度，计算出水口4水体温度与最佳工作温度的温差，进水口2所需水体温度为使进水口2温度按水体比热容为权重，出水口4温度按电池包1的电芯等效比热容为权重，二者的加权平均值基本等于最佳工作温度。A) The controller reads the reading of the temperature measuring unit, and calculates the water temperature of the water inlet of the required cooling water pipe 6 according to the water temperature in the water outlet 4 of the built-in water pipe of the battery pack 1, and the controller controls the cold water volume regulating valve 341 and The opening ratio of the hot water volume regulating valve 342 is mixed to obtain the required water temperature; B) the controller controls the left inlet valve 322 and the right backflow valve 324 to open, the left backflow valve 321 and the right inlet valve 323 to close, and the controller Control the running time T1 of the water pump 33, stop running for T2 time, then the controller controls the left backflow valve 321 and the right inflow valve 323 to open, the left inflow valve 322 and the right backflow valve 324 to close, the controller controls the water pump 33 to run for T1, stop Run T2 time; C) repeat steps A to B. Calculate the water temperature of the water inlet of the required heat dissipation water pipe 6, the specific method is: set the optimum working temperature, calculate the temperature difference between the water body temperature of the water outlet 4 and the optimum working temperature, and the water temperature required by the water inlet 2 is to make the water inlet 2 The temperature is weighted according to the specific heat capacity of the water body, and the temperature of the water outlet 4 is weighted according to the equivalent specific heat capacity of the battery core of the battery pack 1. The weighted average of the two is basically equal to the optimal working temperature.

本实施例的有益效果为：通过将零部件集中到外壳31内，仅通过预留的水管接口分别为电池包1的内置水管以及散热器5连接，使需要布设的水管数量大幅下降，方便设计以及部署；通过冷水量调节阀341以及热水量调节阀342的开度比的调节，获得最适宜的进水口2水温，使温度管理更精准，减小温度波动；通过将电池包1的内置水管的进水口2和出水口4周期性交替互换，可以使电池包1内的电芯温度更加均匀，提高电芯寿命。The beneficial effects of this embodiment are: by concentrating the components in the shell 31, only through the reserved water pipe interface to connect the built-in water pipe of the battery pack 1 and the radiator 5, the number of water pipes to be laid is greatly reduced, and the design is convenient and deployment; through the adjustment of the opening ratio of the cold water regulating valve 341 and the hot water regulating valve 342, the most suitable water temperature of the water inlet 2 is obtained, so that the temperature management is more accurate and the temperature fluctuation is reduced; The water inlet 2 and the water outlet 4 of the water pipe are alternately exchanged periodically, which can make the temperature of the battery cells in the battery pack 1 more uniform and improve the life of the battery cells.

实施例二：Embodiment two:

一种新型电池热管理模块，本实施例在实施例一的基础上，做了进一步的改进。如图3所示，本实施例在实施例一的基础上，增加了热回流水泵361、冷回流水泵371、热储水箱38以及冷储水箱39，热回流水泵361以及冷回流水泵371的进水口均与回流水箱35连通，热回流水泵361的出水口加热器36的进水口连通，冷回流水泵371的出水口热交换器37的进水口连通，加热器36的出水口与热储水箱38进水口连通，热交换器37的出水口与冷储水箱39的进水口连通，热储水箱38的出水口通过热水量调节阀342与水泵33进水口连通，冷储水箱39的出水口通过冷水量调节阀341与水泵33进水口连通，热储水箱38以及冷储水箱39均安装有气压调节阀381以及液位计，两个气压调节阀381以及液位计均与控制器连接。A new battery thermal management module, this embodiment is further improved on the basis of the first embodiment. As shown in Figure 3, on the basis of Embodiment 1, this embodiment adds hot return water pump 361, cold return water pump 371, hot water storage tank 38 and cold water storage tank 39, hot return water pump 361 and cold return water pump 371. The water ports are all communicated with the return water tank 35, the water inlet of the water outlet heater 36 of the hot return water pump 361 is communicated, the water inlet of the water outlet heat exchanger 37 of the cold return water pump 371 is communicated, and the water outlet of the heater 36 is connected with the heat storage tank 38 The water inlet is connected, the water outlet of the heat exchanger 37 is connected with the water inlet of the cold water storage tank 39, the water outlet of the hot water storage tank 38 is connected with the water inlet of the water pump 33 through the hot water volume regulating valve 342, and the water outlet of the cold water storage tank 39 is passed through The cold water regulating valve 341 is communicated with the water inlet of the water pump 33, and the hot water storage tank 38 and the cold storage tank 39 are equipped with an air pressure regulating valve 381 and a liquid level gauge, and the two air pressure regulating valves 381 and the liquid level gauge are all connected with the controller.

本实施例的控制方法为：The control method of this embodiment is:

控制器控制水泵33、热回流水泵361以及冷回流水泵371的转速，使热储水箱38以及冷储水箱39液位基本稳定；当检测到电池包1的内置水管的出水口4内的水温上升或下降速率超过设定阈值时，加快水泵33的转速，但保持热回流水泵361以及冷回流水泵371的转速，直至热储水箱38或者冷储水箱39液位低于设定水位下阈值；加快热回流水泵361以及冷回流水泵371的转速，直至热储水箱38或者冷储水箱39液位高于设定水位上阈值。The controller controls the speeds of the water pump 33, the hot return water pump 361 and the cold return water pump 371, so that the liquid levels of the hot water storage tank 38 and the cold water storage tank 39 are basically stable; Or when the rate of decline exceeds the set threshold, speed up the speed of the water pump 33, but keep the speed of the hot return water pump 361 and the cold return water pump 371 until the liquid level of the hot water storage tank 38 or the cold water storage tank 39 is lower than the lower threshold of the set water level; The hot return water pump 361 and the cold return water pump 371 rotate until the liquid level of the hot water storage tank 38 or the cold water storage tank 39 is higher than the set water level upper threshold.

本实施例的有益效果为：通过设置热储水箱38以及冷储水箱39，在电池包1的温度出现短期的快速变化时，能够将其内存储的热水或冷水，加速输入到电池包1的内置水管内，使电池包1的温度更快的恢复到最佳温度区间，提高电池包1应对温度突变的能力。The beneficial effect of this embodiment is: by setting the hot water storage tank 38 and the cold water storage tank 39, when the temperature of the battery pack 1 undergoes a short-term rapid change, the hot water or cold water stored therein can be quickly input to the battery pack 1 In the built-in water pipe, the temperature of the battery pack 1 can be restored to the optimum temperature range faster, and the ability of the battery pack 1 to cope with sudden temperature changes can be improved.

以上所述的实施例只是本发明的一种较佳的方案，并非对本发明作任何形式上的限制，在不超出权利要求所记载的技术方案的前提下还有其它的变体及改型。The embodiment described above is only a preferred solution of the present invention, and does not limit the present invention in any form. There are other variations and modifications on the premise of not exceeding the technical solution described in the claims.

Claims (9)

1. a kind of novel battery thermal management module connect with the water inlet of the built-in water pipe of battery pack and water outlet, and passes through Heat dissipation pipe connect with heat dissipation pipe, and the water outlet of the built-in water pipe of battery pack is equipped with temperature measurement unit, measures battery pack Built-in water pipe water outlet water temperature, which is characterized in that
Including controller, water pump, cold water adjustable valve, hot water adjustable valve, heater and heat exchanger, cold water adjustable valve, Hot water adjustable valve, water pump and temperature measurement unit are connect with controller, the water outlet of the built-in water pipe of battery pack with plus The connection of the water inlet of hot device water inlet and heat exchanger, heater water outlet are connected by hot water adjustable valve and pump intake Connect, the water outlet of heat exchanger is connect by cold water adjustable valve with pump intake, pump outlet and battery pack it is built-in The water inlet of water pipe connects.
2. a kind of novel battery thermal management module according to claim 1, which is characterized in that
It further include left influent stream valve, left return valve, right influent stream valve, right return valve and reflux tank, Zuo Jinliu valve first end and the right side Influent stream valve first end is connected to pump outlet, the first end of Zuo Jinliu valve second end and left return valve with battery pack The water inlet of built-in water pipe is connected to, the first end of right influent stream valve second end and right return valve with the built-in water pipe of battery pack Water outlet connection, the second end of the second end of left return valve and right return valve be connected tos with reflux tank, reflux tank with add The water inlet of hot device water inlet and heat exchanger connection, Zuo Jinliu valve, left return valve, right influent stream valve and right return valve with Controller connection.
3. a kind of novel battery thermal management module according to claim 2, which is characterized in that
It further include air pressure regulator, the air pressure regulator is mounted on reflux tank, and the opening and closing of air pressure regulator is by controller Control.
4. a kind of novel battery thermal management module according to claim 2 or 3, which is characterized in that
It further include heat reflux water pump, cold reflux water pump, hot water tank and cold water tank, hot water pump and the cold reflux water pump of flowing back Water inlet be connected to reflux tank, heat reflux water pump water outlet heater water inlet connection, cold reflux water pump go out The water inlet of mouth of a river heat exchanger is connected to, and the water outlet of heater is connected to hot water tank water inlet, the water outlet of heat exchanger It is connected to the water inlet of cold water tank, the water outlet of hot water tank is connected to by hot water adjustable valve with pump intake, cold storage The water outlet of water tank is connected to by cold water adjustable valve with pump intake, and hot water tank and cold water tank are mounted on air pressure Regulating valve and liquidometer, described two air pressure regulators and liquidometer are connect with controller.
5. a kind of novel battery thermal management module according to claim 2 or 3, which is characterized in that
The reflux tank bottom is provided with several parting beads, several described parting beads are tightly fastened company with return tank bottom It connects, several described parting beads interweave anyhow is divided into several rectangular cavitys for return tank bottom.
6. a kind of novel battery thermal management module according to claim 5, which is characterized in that
Thickness at the top of the parting bead is greater than the thickness of parting bead bottom.
7. a kind of novel battery thermal management module according to claim 4, which is characterized in that
It further include shell, the controller, water pump, cold water adjustable valve, hot water adjustable valve, heater, heat exchanger, Zuo Jin Flow valve, left return valve, right influent stream valve, right return valve, reflux tank, heat reflux water pump, cold reflux water pump, hot water tank and cold Water tank is installed in shell.
8. a kind of control method of novel battery thermal management module as claimed in claim 2, which is characterized in that
The following steps are included:
A) controller reads the reading of temperature measurement unit, according to the water temperature in the water outlet of the built-in water pipe of battery pack, calculates Obtain the water temperature of the water inlet of required heat dissipation pipe, controller controls the aperture of cold water adjustable valve and hot water adjustable valve Than obtaining required water temperature after mixing；
B) controller controls left influent stream valve and right return valve is opened, and left return valve and right influent stream valve are closed, controller control Pump operation time T1, shuts down the T2 time, and then controller controls left return valve and right influent stream valve is opened, Zuo Jinliu valve And right return valve is closed, controller controls pump operation time T1, shuts down the T2 time；
C step A to B) is repeated.
9. a kind of control method of novel battery thermal management module according to claim 8, which is characterized in that
Step B further includes following sub-step:
Controller controls the revolving speed of water pump, heat reflux water pump and cold reflux water pump, makes hot water tank and cold water tank liquid level It is basicly stable；
When detecting that the water temperature in the water outlet of built-in water pipe of battery pack rises or falls rate more than given threshold, accelerate The revolving speed of water pump, but the revolving speed of heat reflux water pump and cold reflux water pump is kept, until hot water tank or cold water tank liquid level Lower than setting water level lower threshold value；
Accelerate the revolving speed of heat reflux water pump and cold reflux water pump, until hot water tank or cold water tank liquid level are higher than setting water Position upper threshold value.
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