CN111446521A - Heating system for improving adaptability of pure electric vehicle in cold region - Google Patents

Heating system for improving adaptability of pure electric vehicle in cold region Download PDF

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Publication number
CN111446521A
CN111446521A CN202010216163.9A CN202010216163A CN111446521A CN 111446521 A CN111446521 A CN 111446521A CN 202010216163 A CN202010216163 A CN 202010216163A CN 111446521 A CN111446521 A CN 111446521A
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CN
China
Prior art keywords
heat exchanger
heating
plate
power battery
channel
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Pending
Application number
CN202010216163.9A
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Chinese (zh)
Inventor
李永荣
杨雪峰
李惠
施晓光
常印坤
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FAW Bestune Car Co Ltd
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FAW Bestune Car Co Ltd
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Publication date
Application filed by FAW Bestune Car Co Ltd filed Critical FAW Bestune Car Co Ltd
Priority to CN202010216163.9A priority Critical patent/CN111446521A/en
Publication of CN111446521A publication Critical patent/CN111446521A/en
Pending legal-status Critical Current

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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
    • H01M10/615—Heating or keeping warm
    • 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
    • H01M10/62—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
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • H01M10/6563—Gases with forced flow, e.g. by blowers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • 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
    • H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
    • H01M10/663—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an air-conditioner or an engine
    • 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

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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)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

The invention relates to a heating system for improving the cold region adaptability of a pure electric vehicle, which comprises an expansion water tank B, an electric water pump B, an electronic two-way valve and a plate heat exchanger A; the electronic two-way valve is connected with the first channel of the plate-type heat exchanger A in series and then is connected with the warm air core body in parallel in the main heating loop; and the expansion water tank B, the electric water pump B, the power battery and the second channel of the plate-type heat exchanger A are sequentially connected to form a power battery heating loop. The invention can heat the power battery at low temperature while heating the passenger compartment, thereby ensuring longer endurance mileage, preventing thermal shock to the power battery and improving the reliability of the power battery.

Description

Heating system for improving adaptability of pure electric vehicle in cold region
Technical Field
The invention belongs to the technical field of automobile heat management, and particularly relates to a heating system capable of improving the adaptability of a high-purity electric automobile in a cold region.
Background
In recent years, the development of new energy automobiles causes great support for governments and automobile industries of various countries, but a power battery serving as a core assembly of a pure electric automobile, particularly a ternary lithium battery, has remarkable attenuation of the charge-discharge characteristics of the battery in high-cold low-temperature environments. In addition, the heating scheme of the passenger compartment based on the PTC technology consumes the electric energy of the power battery too fast, the endurance mileage is obviously reduced after the heating is started, but the defrosting performance can not meet the requirement of GB11555 if the passenger compartment is not provided with the PTC.
Disclosure of Invention
The heating system can realize low-temperature heating of the power battery, prevent thermal shock to the battery system and ensure long endurance mileage.
In order to solve the technical problem, the heating system for improving the adaptability of the pure electric vehicle in the cold region comprises an expansion water tank B, an electric water pump B, an electronic two-way valve and a plate-type heat exchanger A; the electronic two-way valve is connected with the first channel of the plate-type heat exchanger A in series and then is connected with the warm air core body in parallel in the main heating loop; and the expansion water tank B, the electric water pump B, the power battery and the second channel of the plate-type heat exchanger A are sequentially connected to form a power battery heating loop.
The main heating loop is formed by sequentially connecting a heating host, a warm air core body, an expansion water tank A and an electric water pump A; a liquid inlet of the electronic two-way valve is connected with a cooling liquid outlet of the heating main machine, and a liquid outlet of the electronic two-way valve is connected with a liquid inlet of a first channel of the plate-type heat exchanger A; the liquid outlet of the first channel of the plate-type heat exchanger A is connected with the liquid inlet of the expansion water tank A.
The invention can further comprise a plate heat exchanger B, wherein a second channel liquid outlet of the plate heat exchanger A is connected with a second channel liquid inlet of the plate heat exchanger B, and a second channel liquid outlet of the plate heat exchanger B is connected with a liquid inlet of the expansion water tank B; and a first channel liquid inlet and a first channel liquid outlet of the B-plate type heat exchanger are connected to a refrigerant loop of the vehicle air conditioning system.
When the power battery needs to be heated, the electronic two-way valve is opened, the cooling liquid heated by the heating host in the main heating loop flows through the first channel of the A plate type heat exchanger, indirect heat exchange is realized with the cooling liquid reversely flowing through the power battery heating loop of the second channel of the A plate type heat exchanger, low-temperature heating of the power battery is realized, and the design of the indirect heat exchange can prevent thermal shock to the power battery caused by overhigh temperature of the cooling liquid when the electronic two-way valve is opened under the condition that a passenger heats the power battery.
The invention is obviously different from a PTC heating mode, can quickly heat the power battery at low temperature while heating the passenger compartment, has the heat source independent of the electric energy consumption of the power battery and is derived from the full combustion of fuel oil inside a main heating loop heating host machine, thereby ensuring longer endurance mileage, and simultaneously can heat the temperature of the power battery to proper temperature, obviously improving the adaptability of the pure electric vehicle in cold region operation, and fundamentally eliminating the anxiety of users to the problems of endurance mileage, low-temperature quick charge, windshield glass defrosting, passenger compartment heating and the like, thereby improving the comfort and safety of the whole vehicle. Especially, indirect heat exchange is realized by using the coolant in the main heating loop and the coolant reversely flowing through the power battery heating loop of the second channel of the plate-type heat exchanger A when the coolant flows through the first channel of the plate-type heat exchanger A, so that the low-temperature rapid heating of the power battery is realized, meanwhile, the thermal shock to the power battery can be prevented, and the reliability of the power battery is improved.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
As shown in fig. 1, the heating system for improving the adaptability of the pure electric vehicle in the cold region comprises a heating host 1, an electronic two-way valve 2, a warm air core 3, an a plate heat exchanger 4, an a expansion water tank 5, an a electric water pump 6, a B plate heat exchanger 7, a B expansion water tank 8 and a B electric water pump 9; the heating main machine 1, the warm air core body 3, the A expansion water tank 5 and the A electric water pump 6 are sequentially connected to form a main heating loop, and the warm air core body 3 is used as a heating heat source of a passenger cabin; the electronic two-way valve 2 and the plate type heat exchanger A4 are connected in series and then are connected in parallel with the warm air core body 3 in the main heating loop; a liquid inlet of the electronic two-way valve 2 is connected with a cooling liquid outlet of the heating main machine 1, and a liquid outlet of the electronic two-way valve 2 is connected with a first channel liquid inlet P1 of the plate-type heat exchanger A4; a first channel liquid outlet O1 of the plate-type heat exchanger A4 is connected with a liquid inlet of an expansion water tank A5; the plate heat exchanger B7, the expansion water tank B8, the electric water pump B9, the power battery 10 and a second channel of the plate heat exchanger A4 are sequentially connected to form a power battery heating loop; a second channel liquid inlet P2 of the A plate heat exchanger 4 is connected with a cooling liquid channel liquid outlet of the power battery 10, a second channel liquid outlet O2 is connected with a second channel liquid inlet P2 'of the B plate heat exchanger 7, and a second channel liquid outlet O2' of the B plate heat exchanger 7 is connected with a liquid inlet of the B expansion water tank 8.
The first channel liquid inlet P1 'and the first channel liquid outlet O1' of the B plate type heat exchanger 7 are connected to a refrigerant circuit of a vehicle air conditioning system.
The cooling liquid in the main heating loop is heated by an independent heating main machine 1; the heating main machine 1 adopts a fuel oil heater, an internal heating system of the heating main machine comprises necessary devices such as fuel oil supply, tail gas emission and the like, and the cooling liquid is heated by utilizing the full combustion of the fuel oil. The heated coolant flows through the warm air core body 3 and can provide a heating source for the passenger compartment.
When needing to heat power battery, opening electron two-way valve 2, the coolant liquid that heats through the heating host computer in the main heating loop flows through the first passageway of A plate heat exchanger 4, realizes indirect heat transfer with the coolant liquid of the power battery heating loop of the 4 second passageways of A plate heat exchanger of reverse flow through to can realize the low temperature rapid heating to power battery, can prevent simultaneously under the condition of passenger's heating, the too high thermal shock to battery system of coolant liquid temperature when opening electron two-way valve 2.
Through the adjustment of the electric water pump A6, the electronic two-way valve 2, the electric water pump B9 and the switch of the vehicle air conditioning system, the passenger compartment and the power battery can be heated simultaneously, the passenger compartment is heated independently, the power battery is heated independently, and the power battery is cooled while the passenger compartment is heated.
Passenger compartment and power battery simultaneous heating strategy: the electric water pump A6, the electronic two-way valve 2, the electric water pump B9 and the heating switch of the air conditioning system are simultaneously started, and the refrigerant loop is closed.
Passenger compartment individual heating strategy: and the electric water pump 6A is started, and the electronic two-way valve 2 is closed.
Power battery individual heating strategy: the electric water pump 6A is started, the electronic two-way valve 2 is started, the electric water pump 9B is started, a heating switch of the vehicle air conditioning system is turned off (at the moment, although high-temperature cooling liquid flows through the interior of the warm air core body, no outside air flows, heating of a passenger cabin is not performed), and a refrigerant loop is turned off.
Heating the passenger compartment and cooling the power battery: the electric water pump A6 is started, the electronic two-way valve 2 is closed, the electric water pump B9 is started, the heating switch of the air conditioning system is started, and the refrigerant loop is started. And a refrigerant is introduced into the first channel of the plate-type B heat exchanger 7, exchanges heat with the cooling liquid flowing through the second channel, and the cooling of the power battery is realized by utilizing the refrigeration of the air conditioning system.

Claims (3)

1. A heating system for improving adaptability of a pure electric vehicle in a cold region is characterized by comprising an expansion water tank B (8), an electric water pump B (9), an electronic two-way valve (2) and a plate-type heat exchanger A (4); the electronic two-way valve (2) is connected in series with the first channel of the plate-type heat exchanger A (4) and then is connected in parallel with the warm air core body (3) in the main heating loop; and the expansion water tank B (8), the electric water pump B (9), the power battery (10) and the second channel of the plate-type heat exchanger A (4) are sequentially connected to form a power battery heating loop.
2. The heating system for improving the adaptability of the pure electric vehicle to the cold region according to claim 1, wherein the main heating loop is formed by sequentially connecting a heating main machine (1), a warm air core body (3), an A expansion water tank (5) and an A electric water pump (6); a liquid inlet of the electronic two-way valve (2) is connected with a cooling liquid outlet of the heating main machine (1), and a liquid outlet is connected with a first channel liquid inlet (P1) of the plate-type heat exchanger A (4); a first channel liquid outlet (O1) of the plate heat exchanger A (4) is connected with a liquid inlet of the expansion water tank A (5).
3. The heating system for improving the cold region adaptability of the pure electric vehicle as claimed in claim 1 or 2, characterized by further comprising a B plate heat exchanger (7), wherein the second channel liquid outlet (O2) of the A plate heat exchanger (4) is connected with the second channel liquid inlet (P2 ') of the B plate heat exchanger (7), and the second channel liquid outlet (O2') of the B plate heat exchanger (7) is connected with the liquid inlet of the B expansion water tank (8); the first channel liquid inlet (P1 ') and the first channel liquid outlet (O1') of the B plate heat exchanger (7) are connected to a refrigerant circuit of a vehicle air conditioning system.
CN202010216163.9A 2020-03-25 2020-03-25 Heating system for improving adaptability of pure electric vehicle in cold region Pending CN111446521A (en)

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CN202010216163.9A CN111446521A (en) 2020-03-25 2020-03-25 Heating system for improving adaptability of pure electric vehicle in cold region

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CN202010216163.9A CN111446521A (en) 2020-03-25 2020-03-25 Heating system for improving adaptability of pure electric vehicle in cold region

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112820979A (en) * 2021-01-15 2021-05-18 一汽解放汽车有限公司 Power battery thermal management system and power battery thermal management control method
CN113635731A (en) * 2021-08-17 2021-11-12 一汽奔腾轿车有限公司 High-efficient thermal management system of pure electric vehicles

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104681886A (en) * 2015-03-25 2015-06-03 东风汽车公司 Power battery pack preheating device and control method thereof
CN205185831U (en) * 2015-11-13 2016-04-27 东软集团股份有限公司 Electric automobile and power battery heating system thereof
CN110001352A (en) * 2019-04-30 2019-07-12 威马智慧出行科技（上海）有限公司 New-energy automobile and its heat management device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104681886A (en) * 2015-03-25 2015-06-03 东风汽车公司 Power battery pack preheating device and control method thereof
CN205185831U (en) * 2015-11-13 2016-04-27 东软集团股份有限公司 Electric automobile and power battery heating system thereof
CN110001352A (en) * 2019-04-30 2019-07-12 威马智慧出行科技（上海）有限公司 New-energy automobile and its heat management device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112820979A (en) * 2021-01-15 2021-05-18 一汽解放汽车有限公司 Power battery thermal management system and power battery thermal management control method
CN113635731A (en) * 2021-08-17 2021-11-12 一汽奔腾轿车有限公司 High-efficient thermal management system of pure electric vehicles

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Application publication date: 20200724

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