CN115465089A - Hybrid vehicle and control method of thermal management system of hybrid vehicle - Google Patents

Hybrid vehicle and control method of thermal management system of hybrid vehicle Download PDF

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Publication number
CN115465089A
CN115465089A CN202211173679.5A CN202211173679A CN115465089A CN 115465089 A CN115465089 A CN 115465089A CN 202211173679 A CN202211173679 A CN 202211173679A CN 115465089 A CN115465089 A CN 115465089A
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CN
China
Prior art keywords
engine
coolant
battery
thermal management
management system
Prior art date
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Pending
Application number
CN202211173679.5A
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Chinese (zh)
Inventor
李强
潘振锋
王明利
郑轶钟
张鑫垚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weichai Power Co Ltd
Weichai New Energy Technology Co Ltd
Original Assignee
Weichai Power Co Ltd
Weichai New Energy Technology Co Ltd
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Application filed by Weichai Power Co Ltd, Weichai New Energy Technology Co Ltd filed Critical Weichai Power Co Ltd
Priority to CN202211173679.5A priority Critical patent/CN115465089A/en
Publication of CN115465089A publication Critical patent/CN115465089A/en
Priority to PCT/CN2022/143609 priority patent/WO2024066110A1/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
    • B60H1/004—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for vehicles having a combustion engine and electric drive means, e.g. hybrid electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
    • B60H1/04—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/3227—Cooling devices using compression characterised by the arrangement or the type of heat exchanger, e.g. condenser, evaporator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—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
    • H01M10/66—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H2001/00307—Component temperature regulation using a liquid flow

Abstract

The invention discloses a control method of a thermal management system of a hybrid vehicle and the hybrid vehicle, and relates to the technical field of hybrid vehicles. According to the control method of the thermal management system of the hybrid vehicle, when the temperature of the engine coolant is higher than the maximum temperature limit value, a heat storage mode is started, the high-temperature coolant in the coolant pipeline of the engine is introduced into the heat accumulator, the coolant with the lower temperature in the heat accumulator enters the engine cooling pipeline, the temperature rise of the engine can be improved, and the heat of the engine is stored in the heat accumulator for being used by other thermal management systems. When the engine is stopped, the engine is in a stop circulation mode, and the engine coolant is driven by the first water pump to circulate between a coolant pipeline of the engine and an engine radiator, so that the temperature is reduced. The engine cooling liquid is continuously driven after the engine is stopped through the first water pump, the heat dissipation function is realized, and the problem that the temperature of the engine is out of limit after the engine is stopped is effectively solved.

Description

Hybrid vehicle and thermal management system control method thereof
Technical Field
The invention relates to the technical field of hybrid vehicles, in particular to a hybrid vehicle and a control method of a thermal management system of the hybrid vehicle.
Background
Hybrid vehicle's part is more, and the temperature threshold value is inconsistent, and the cooling demand of rising temperature is also inconsistent, and the coolant liquid pipeline of different parts can't directly establish ties, and required valve and heat exchanger are more, and the cost is higher.
In the prior art, cost saving is realized by integrating various thermal management systems. However, after the engine of the hybrid vehicle runs for a long time, the temperature of the cooling liquid of the engine is too high, and the temperature needs to be reduced in time, otherwise, the service life of the engine is influenced; in the prior art, heat is dissipated through a radiator of an engine, so that heat loss is caused; and more electric quantity can be consumed in the heat dissipation process, so that a better energy-saving effect is difficult to realize. In addition, the engine has the problem of temperature overrun after scram.
Disclosure of Invention
The invention aims to provide a control method of a thermal management system of a hybrid vehicle and the hybrid vehicle, which not only can store heat of an engine for standby application, but also can effectively solve the problem of temperature overrun of the engine of the hybrid vehicle after sudden stop.
In order to achieve the purpose, the invention adopts the following technical scheme:
the control method of the thermal management system of the hybrid vehicle comprises the following steps:
when the temperature of the engine coolant is higher than the maximum temperature limit value, entering a heat storage mode;
the heat storage mode is as follows: the outlet of a cooling liquid pipeline of the engine is communicated with the liquid inlet of a heat accumulator, the liquid outlet of the heat accumulator is communicated with the inlet of the cooling liquid pipeline of the engine, and the heat accumulator stores heat and simultaneously reduces the temperature rise of cooling liquid of the engine;
when the engine is stopped, entering an engine stop circulation mode;
the engine shutdown cycle mode is as follows: the engine coolant is driven to circulate between a coolant line of the engine and an engine radiator by a first water pump.
As an alternative scheme of the control method of the heat management system of the hybrid electric vehicle, when a battery needs to be heated, a cooling liquid pipeline outlet of the engine is disconnected with a liquid inlet of the heat accumulator, a liquid outlet of the heat accumulator is disconnected with a cooling liquid pipeline inlet of the engine, and the first water pump drives high-temperature cooling liquid in the heat accumulator to exchange heat with battery cooling liquid through the plate heat exchanger so as to heat the battery.
As an alternative to the control method of the thermal management system of the hybrid vehicle, when the hybrid vehicle has a demand for an overall heat engine, a rapid heat engine mode is started, the rapid heat engine mode including the steps of:
the battery starts a heating film to heat, and the engine enters a heat engine state;
when the battery has the discharge capacity, the motor enters a creeping low-efficiency heating mode and simultaneously enters a motor waste heat heating mode;
and when the temperature of the engine coolant is equal to a first set temperature, stopping the motor waste heat heating mode and entering the engine waste heat heating mode.
As an alternative of the control method of the thermal management system of the hybrid vehicle, the motor waste heat heating mode is as follows:
and if the temperature of the battery coolant is less than the temperature of the motor coolant and less than a second set temperature, the second set temperature is the highest temperature which can be born by the battery, the battery coolant is driven by a second water pump to flow, and the battery coolant enters a coolant pipeline of the motor and a coolant pipeline of the motor controller from a coolant pipeline outlet of the battery and then enters the battery from a coolant pipeline inlet of the battery.
As an alternative to the control method of the thermal management system of the hybrid vehicle, the engine waste heat heating mode is:
and if the temperature of the engine coolant is greater than that of the battery coolant, the battery enters a battery self-circulation mode, and the engine coolant exchanges heat with the battery coolant through the plate heat exchanger under the driving of the mechanical water pump.
As an alternative to the control method of the thermal management system of the hybrid vehicle, the battery self-circulation mode is: and the second water pump drives the battery cooling liquid to circulate in a cooling liquid pipeline of the battery.
The hybrid vehicle comprises a thermal management system, wherein the thermal management system adopts the control method of the thermal management system of the hybrid vehicle according to any scheme, the thermal management system comprises an engine thermal management system, the engine thermal management system comprises an engine, an engine radiator, a water valve, a first water pump and a heat accumulator, the engine radiator is used for radiating engine coolant, and an outlet of a coolant pipeline of the engine can be communicated with a liquid inlet of the heat accumulator; the first water pump is arranged at an outlet of a cooling liquid pipeline of the engine, the water valve is arranged on a parallel branch of an inlet of the cooling liquid pipeline of the engine and an inlet of an engine radiator, and the first water pump is used for driving the engine cooling liquid to circulate between the cooling liquid pipeline of the engine and the engine radiator.
As an alternative of the hybrid vehicle, the thermal management system further includes a battery thermal management system, the battery thermal management system includes a battery, a plate heat exchanger, and a second water pump, the plate heat exchanger is disposed between the battery thermal management system and the engine thermal management system, the heat accumulator can be connected with a coolant pipeline of the battery through the plate heat exchanger, and the second water pump is configured to drive battery coolant to circulate in the coolant pipeline of the battery.
As an alternative of the hybrid vehicle, the engine heat management system further includes a three-way valve, a first valve port of the three-way valve is connected to an outlet of a coolant pipeline of the engine, a second valve port of the three-way valve is connected to one end of a hot water side of the plate heat exchanger, the other end of the hot water side of the plate heat exchanger is connected to a liquid outlet of the heat accumulator and an inlet of the coolant pipeline of the engine, one end of the cold water side of the plate heat exchanger is connected to an inlet of the coolant pipeline of the battery, the other end of the cold water side of the plate heat exchanger is connected to an outlet of the coolant pipeline of the battery, and a third valve port of the three-way valve is connected to an inlet of the heat accumulator.
As an alternative of hybrid vehicle, the thermal management system still includes the electricity and drives the thermal management system, the electricity drives the thermal management system and includes machine of charging, motor, machine controller, motor radiator and third water pump, the coolant pipe outlet of motor and machine controller's coolant pipe access connection, machine controller's coolant pipe outlet and the coolant pipe access connection of machine of charging, the coolant pipe outlet of machine of charging is connected with machine radiator's inlet, machine radiator's liquid outlet and the coolant pipe access connection of motor, the third water pump is used for driving machine of charging coolant liquid, motor coolant liquid and machine controller coolant liquid to flow through machine radiator heat dissipation.
As an alternative of the hybrid vehicle, a four-way valve is arranged between the battery thermal management system and the electric drive thermal management system, a first valve port of the four-way valve is connected with a cooling liquid pipeline inlet of the battery, a second valve port of the four-way valve is connected with a cooling liquid pipeline outlet of the battery, a third valve port of the four-way valve is connected with a cooling liquid pipeline inlet of the charger, and a fourth valve port of the four-way valve is connected with a cooling liquid pipeline outlet of the motor controller.
As an alternative of the hybrid vehicle, the thermal management system further comprises an air conditioning system, the air conditioning system comprises an air conditioning compressor, a condenser and an evaporator, the air conditioning compressor is connected with the evaporator, and the condenser is connected between the evaporator and the air conditioning compressor.
As an alternative of the hybrid vehicle, the air conditioning system and the battery thermal management system are connected through a refrigerator, a hot end channel of the refrigerator is connected with the air conditioning system, and a cold end channel of the refrigerator is connected with the battery thermal management system; the refrigerator is connected with the evaporator in parallel, the refrigerator is connected with the condenser through a first stop valve, and the evaporator is connected with the condenser through a second stop valve.
The invention has the beneficial effects that:
according to the control method of the thermal management system of the hybrid vehicle, when the temperature of the engine coolant is higher than the maximum temperature limit value, the thermal storage mode is started, the high-temperature coolant in the coolant pipeline of the engine enters the heat accumulator to replace the coolant with lower temperature in the heat accumulator, and the coolant with lower temperature in the heat accumulator enters the engine cooling pipeline, so that the temperature rise of the engine can be improved, and the heat of the engine is stored in the heat accumulator to be used by other thermal management systems. When the engine is stopped, the engine is in a stop circulation mode, and the engine coolant is driven by the first water pump to circulate between a coolant pipeline of the engine and an engine radiator, so that the temperature is reduced. The engine cooling liquid is continuously driven after the engine is stopped through the first water pump, the heat dissipation function is realized, and the problem that the temperature of the engine is out of limit after the engine is stopped is effectively solved.
The hybrid vehicle comprises a thermal management system, wherein the thermal management system adopts the control method of the thermal management system of the hybrid vehicle, and when the temperature of the coolant of the engine is higher, the heat of the coolant of the engine is stored in a heat accumulator for being used by other thermal management systems; and the cooling liquid with lower temperature in the heat accumulator is mixed into the cooling pipeline of the engine, so that the temperature rise of the engine is improved, and the better energy-saving effect is achieved. And after the engine is suddenly stopped, the first water pump drives the engine coolant to circulate between a coolant pipeline of the engine and an engine radiator, so that the cooling is realized, and the problem of temperature overrun after the engine is stopped is effectively solved.
Drawings
Fig. 1 is a schematic diagram of a thermal management system of a hybrid vehicle according to an embodiment of the present invention.
In the figure:
1. an engine; 2. an engine radiator; 3. an intercooler; 4. a water valve; 5. a first water pump; 6. a heat accumulator; 7. a fan; 8. APTC; 9. a three-way valve; 10. a battery; 11. a plate heat exchanger; 12. a second water pump; 13. a first temperature sensor; 14. a second temperature sensor; 15. a motor; 16. a motor controller; 17. a charger; 18. a motor radiator; 19. a third water pump; 20. a four-way valve; 21. an air conditioning compressor; 22. a condenser; 23. an evaporator; 24. a refrigerator; 25. a first shut-off valve; 26. a second stop valve; 27. a pressure sensor; 28. a tri-state pressure switch.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly and encompass, for example, both fixed and removable connections; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in direct contact with the second feature but being in contact with the second feature by another feature therebetween. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The embodiment provides a hybrid vehicle, which comprises a thermal management system shown in fig. 1, wherein the thermal management system comprises an engine thermal management system, a battery thermal management system, an electric drive thermal management system and an air conditioning system, the temperature thresholds of the four thermal management systems are inconsistent, and the requirements for temperature rise and temperature reduction are inconsistent.
The engine heat management system comprises an engine 1, an engine radiator 2, an intercooler 3, a fan 7, an APTC8, a water valve 4, a first water pump 5 and a heat accumulator 6, wherein the engine radiator 2 is used for heat dissipation of engine cooling liquid, a cooling liquid pipeline outlet of the engine 1 is communicated with a liquid inlet of the engine radiator 2, a liquid outlet of the engine radiator 2 is communicated with a cooling liquid pipeline inlet of the engine 1, and when the engine 1 works normally, the engine cooling liquid is driven to flow through the engine radiator 2 through a self-contained mechanical water pump so as to realize cooling of the engine cooling liquid; the engine 1 is connected with a fan 7 and an APTC8, and the fan 7 and the APTC8 are used for heating the engine 1 so as to realize cold start of the engine 1. An air inlet pipeline of the engine 1 is connected with the intercooler 3, air inlet of the engine 1 is dissipated through the intercooler 3, and the size cycle of the engine 1 is controlled by the thermostat.
The outlet of a cooling liquid pipeline of the engine 1 is communicated with the liquid inlet of the heat accumulator 6; the first water pump 5 is arranged at an outlet of a cooling liquid pipeline of the engine 1, the water valve 4 is arranged on a parallel branch of an inlet of the cooling liquid pipeline of the engine 1 and an inlet of the engine radiator 2, and the first water pump 5 is used for driving engine cooling liquid to circulate between the cooling liquid pipeline of the engine 1 and the engine radiator 2.
In the embodiment, the water valve 4 is arranged to control whether the heat accumulator 6 is communicated with the inlet of the coolant pipeline of the engine 1 and the engine radiator 2, when the temperature of the coolant of the engine 1 exceeds the maximum temperature limit, the coolant of the engine is stored in the heat accumulator 6, and the coolant with lower temperature in the heat accumulator 6 is mixed into the coolant pipeline of the engine 1, so that the temperature rise of the engine 1 is improved, the service life of the engine 1 is prevented from being influenced by overhigh temperature rise, and the heat of the coolant of the engine can be stored for use of other thermal management systems. The first water pump 5 is arranged between the heat accumulator 6 and the water valve 4, and the first water pump 5 can drive the engine cooling liquid to circulate between the cooling pipeline of the engine 1 and the engine radiator 2 after the engine 1 is suddenly stopped, so that the engine 1 is cooled, and the problem that the temperature of the engine 1 is over-limited after the engine 1 is suddenly stopped is effectively solved.
The battery thermal management system comprises a battery 10, a plate heat exchanger 11 and a second water pump 12, the plate heat exchanger 11 is arranged between the battery thermal management system and an engine thermal management system, the heat accumulator 6 can exchange heat with battery cooling liquid through the plate heat exchanger 11, and the second water pump 12 is used for driving the battery cooling liquid to circulate in a cooling liquid pipeline of the battery 10.
The battery 10 may be heated by its own heating film. A first temperature sensor 13 is arranged at the inlet of a cooling liquid pipeline of the battery 10, the first temperature sensor 13 is used for detecting the water inlet temperature of the battery 10, a second temperature sensor 14 is arranged at the outlet of the cooling liquid pipeline of the battery 10, and the second temperature sensor 14 is used for detecting the water outlet temperature of the battery 10. The temperature of the battery 10 is monitored by detecting the temperature of the inlet water of the battery 10 and the temperature of the outlet water of the battery 10, so as to ensure that the battery 10 works at a proper temperature.
When the temperature of the battery 10 is low and heating is needed, the heat of the engine coolant stored in the heat accumulator 6 is used for heating the battery 10 through the plate type heat exchanger 11, so that the heat of the engine coolant is effectively utilized, and energy is saved.
Because the temperature threshold value of the battery 10 is smaller than the heat of the engine coolant, and the maximum temperature limit value of the engine coolant is 95 ℃, which is far higher than the suitable temperature for the operation of the battery 10, the engine coolant enters the hot water side of the plate heat exchanger 11, after heat exchange is performed through the plate heat exchanger 11, the battery coolant enters the cold water side of the plate heat exchanger 11, and the heat exchange amount between the hot water side of the plate heat exchanger 11 and the cold water side of the plate heat exchanger 11 is calculated to heat the battery 10, so that the service life of the battery 10 is prevented from being influenced by the overhigh temperature of the battery 10.
The battery 10 comprises a battery cell, and according to calculation, the specific heat capacity of the cooling liquid is about 2.5 times of that of the battery cell; when the temperature difference of the cooling liquid is 80 ℃ and the temperature difference of the battery 10 is 5 ℃, the temperature difference is about 16 times; according to the following steps: heat = specific heat capacity mass temperature difference, it can be concluded that the coolant weight for the heat accumulator 6 is a forty-percent of the cell mass of the battery 10. If the cell mass is about 102kg, calculated for the cell of the battery 10 of the hybrid vehicle, about 2.55kg of coolant needs to be added.
In order to realize that the heat accumulator 6 can accumulate heat through engine coolant and can transfer the stored heat to the battery 10, the engine heat management system further comprises a three-way valve 9, a first valve port of the three-way valve 9 is connected with a coolant pipeline outlet of the engine 1, a second valve port of the three-way valve 9 is connected with one end of a hot water side of the plate heat exchanger 11, the other end of the hot water side of the plate heat exchanger 11 is connected with a liquid outlet of the heat accumulator 6 and a coolant pipeline inlet of the engine 1, one end of a cold water side of the plate heat exchanger 11 is connected with a coolant pipeline inlet of the battery 10, the other end of the cold water side of the plate heat exchanger 11 is connected with a coolant pipeline outlet of the battery 10, and a third valve port of the three-way valve 9 is connected with a liquid inlet of the heat accumulator 6.
When the heat accumulator 6 enters a heat accumulation mode, the first valve port and the third valve port of the three-way valve 9 are communicated, the coolant with higher temperature flowing out from the coolant pipeline outlet of the engine 1 enters the heat accumulator 6 through the first valve port and the third valve port of the three-way valve 9, the water valve 4 is opened, and the coolant with lower temperature in the heat accumulator 6 can enter the coolant pipeline of the engine 1, so that the temperature rise of the engine 1 is improved.
When the heat accumulator 6 enters a heat release mode, the second valve port and the third valve port of the three-way valve 9 are communicated, the water valve 4 is closed, and under the driving of the first water pump 5, the cooling liquid in the heat accumulator 6 passes through the plate type heat exchanger 11 to heat the battery 10.
The electric drive heat management system comprises a charger 17, a motor 15, a motor controller 16, a motor radiator 18 and a third water pump 19, wherein a coolant pipeline outlet of the motor 15 is connected with a coolant pipeline inlet of the motor controller 16, a coolant pipeline outlet of the motor controller 16 is connected with a coolant pipeline inlet of the charger 17, a coolant pipeline outlet of the charger 17 is connected with a liquid inlet of the motor radiator 18, a liquid outlet of the motor radiator 18 is connected with a coolant pipeline inlet of the motor 15, and the third water pump 19 is used for driving the charger coolant, the motor coolant and the motor controller coolant to flow through the motor radiator 18 for heat dissipation. The charger 17 is used to charge the battery 10 and also needs heat dissipation. The motor radiator 18 is internally provided with an electronic fan, and the charger 17, the motor 15 and the motor controller 16 all radiate heat through the motor radiator 18.
In order to realize that the motor radiator 18 provides cooling for the battery 10 and utilize the waste heat of the motor 15 to heat the battery 10, the communication of different temperature ranges, different time, different heat production and heat utilization relations is realized, and the comprehensive utilization efficiency is improved. A four-way valve 20 is arranged between the battery thermal management system and the electric drive thermal management system, a first valve port of the four-way valve 20 is connected with a cooling liquid pipeline inlet of the battery 10, a second valve port of the four-way valve 20 is connected with a cooling liquid pipeline outlet of the battery 10, a third valve port of the four-way valve 20 is connected with a cooling liquid pipeline inlet of the charger 17, and a fourth valve port of the four-way valve 20 is connected with a cooling liquid pipeline outlet of the motor controller 16.
When the electric drive heat management system needs cooling, the third valve port and the fourth valve port of the four-way valve 20 are communicated, and the third water pump 19 drives the motor cooling liquid to reach the motor radiator 18 through the charger 17, the motor 15 and the motor controller 16 for heat dissipation.
When the battery 10 enters the battery self-circulation mode, the second valve port and the first valve port of the four-way valve 20 are communicated, and the second water pump 12 drives the battery coolant to circulate in the coolant pipeline of the battery 10.
When the hybrid vehicle is operating in a non-electric drive mode, the motor radiator 18 may be preferentially used for cooling if the battery 10 has a heat dissipation requirement. When the temperature of the motor coolant is less than or equal to the temperature of the battery coolant, the third valve port of the four-way valve 20 is communicated with the first valve port, and the second water pump 12 drives the battery coolant to enter the motor radiator 18 through the first valve port and the third valve port of the four-way valve 20 and the coolant pipeline of the charger 17 for heat dissipation.
When the battery 10 needs to be heated, the heating can be performed by the residual heat of the motor 15 and the residual heat of the engine 1.
If the battery coolant temperature is less than the motor coolant temperature and less than the second set temperature, the second set temperature is the highest temperature that the battery 10 can withstand. The third water pump 19 is turned off, the first valve port and the fourth valve port of the four-way valve 20 are communicated, the second water pump 12 drives the cooling liquid to enter the cooling liquid pipeline of the battery 10 through the motor 15, the motor controller 16, the third water pump 19 and the fourth valve port and the first valve port of the four-way valve 20, and the battery 10 is heated through the residual heat of the motor 15. In this embodiment, the maximum temperature that the battery 10 can withstand is 50 ℃. Once the temperature of the battery coolant is above 50 ℃, the life of the battery 10 is affected.
If the engine coolant temperature is greater than the battery coolant temperature, the first valve port and the second valve port of the four-way valve 20 communicate, and the battery 10 enters the battery self-circulation mode. The first valve port and the second valve port of the three-way valve 9 are communicated, the water valve 4 is opened, the cooling liquid of the engine 1 is driven by the mechanical water pump to return to a cooling liquid pipeline of the engine 1 through the first valve port and the second valve port of the three-way valve 9, the plate heat exchanger 11 and the water valve 4, and the cooling liquid of the engine exchanges heat with the cooling liquid of the battery through the plate heat exchanger 11, so that the battery 10 is heated.
The air conditioning system includes an air conditioning compressor 21, a condenser 22, and an evaporator 23, the air conditioning compressor 21 is connected to the evaporator 23, and the condenser 22 is connected between the evaporator 23 and the air conditioning compressor 21.
The refrigerant in the air conditioning system is compressed by an air conditioning compressor 21 to become high-temperature and high-pressure gas, and after being condensed by a condenser 22, the high-temperature and high-pressure gas enters an evaporator 23, and the evaporator 23 provides cold air for a cab of the hybrid vehicle.
A pressure sensor 27 and a tri-state pressure switch 28 are also arranged in the air conditioning system, the pressure sensor 27 is used for detecting the pressure in the high-pressure loop, and the tri-state pressure switch 28 can prevent the air conditioning compressor 21 from being damaged due to the leakage of the refrigerant; when the high pressure of the refrigerant in the air conditioning system is abnormal, the air conditioning system is protected from being damaged. Under the normal working condition, the fan of the condenser 22 runs at a low speed, so that low noise is realized, and power is saved; when the high pressure in the air conditioning system rises, the fan is operated at a high speed to improve the heat radiation condition of the condenser 22, and two-stage speed change of the fan is realized.
The air conditioning system is connected with the battery thermal management system through a refrigerator 24, a hot end channel of the refrigerator 24 is connected with the air conditioning system, and a cold end channel of the refrigerator 24 is connected with the battery thermal management system; the refrigerator 24 is connected in parallel to the evaporator 23, the refrigerator 24 is connected to the condenser 22 through a first cutoff valve 25, and the evaporator 23 is connected to the condenser 22 through a second cutoff valve 26. By providing a first stop valve 25 and a second stop valve 26, the cold air of the air conditioning system is led to different branches.
When the first cut-off valve 25 is opened and the second cut-off valve 26 is closed, the first valve port and the second valve port of the four-way valve 20 are communicated, and the refrigerant of the air-conditioning compressor 21 is cooled by the condenser 22 and then enters the refrigerator 24 through the first cut-off valve 25. The second water pump 12 drives the cooling liquid of the battery 10 to flow, the flow direction is consistent with the self-circulation mode of the battery, the three-way valve 9 is closed, and the plate type heat exchanger 11 does not work and is used for cooling the cooling liquid of the battery.
When the first stop valve 25 is closed and the second stop valve 26 is opened, the refrigerant of the air conditioner compressor 21 is cooled by the condenser 22 and then enters the evaporator 23 through the second stop valve 26, thereby improving the cooling air for the cab.
The heating of the cab is performed using the coolant of the engine 1 or the APTC 8.
The thermal management system of the hybrid electric vehicle provided by the embodiment can be used for rapidly warming when the whole vehicle has a warming requirement. The battery 10 first starts heating the heating film while the engine 1 enters a warm-up state. When the battery 10 has a certain discharge capacity, the motor 15 enters a creeping low-efficiency heating mode, and simultaneously, the motor 15 is switched on to realize a waste heat heating mode, so that the battery 10 is rapidly heated. When the temperature of the cooling liquid of the engine 1 is equal to the first set temperature, the waste heat heating mode of the motor 15 is stopped, and the waste heat heating mode of the engine 1 is opened for heating. When the hybrid vehicle is in a low-temperature cold start environment, the battery 10 is heated by the heating film, the residual heat of the motor 15 and the residual heat of the engine 1, so that a rapid heat engine is realized.
The creep inefficient heating mode of the motor 15 is: the motor 15 is operated in the low-efficiency mode, and the motor 15 generates heat after becoming low in efficiency, so that the motor cooling liquid is heated quickly.
In the present embodiment, the first set temperature is 60 ℃, which a person skilled in the art can obtain depending on the model and parameters of the engine 1.
The thermal management system of the hybrid vehicle provided by the embodiment can realize communication of different temperature ranges, different time, different heat production and heat utilization relations, and improve comprehensive utilization efficiency; by adding a heat storage device, time and energy consumption during cold start are saved, and the service life of the battery 10 is prolonged. By using the first water pump 5 of the heat accumulator 6, the engine cooling liquid can be continuously driven after the engine 1 stops, the heat dissipation function is realized, and the problem of temperature overrun pain points of the engine 1 of the hybrid vehicle after sudden stop is effectively solved.
The embodiment also provides a control method of the thermal management system of the hybrid vehicle, which is applied to the thermal management system of the hybrid vehicle. According to the control method of the thermal management system of the hybrid vehicle, aiming at the problems that the number of thermal management systems of the hybrid vehicle is large, the temperature ranges of the thermal management systems are inconsistent, the arrangement of the whole vehicle is difficult, the energy consumption is high during cold start and the like, the functions of all the components are analyzed by using the TRIZ theory, the cutting function is used, the components in the thermal management system are cut, the useful functions of the components are redistributed to other components in the thermal management system, and the problem solving and the cost reduction are realized.
The control method of the thermal management system of the hybrid vehicle provided by the embodiment can realize twelve different thermal management modes through different combination forms.
The first thermal management mode is as follows: and (4) heat accumulation and release modes.
When the temperature of the engine coolant is higher than the maximum temperature limit value, entering a heat storage mode; the heat storage mode is as follows: the outlet of a cooling liquid pipeline of the engine 1 is communicated with the inlet of the heat accumulator 6, the liquid outlet of the heat accumulator 6 is communicated with the inlet of the cooling liquid pipeline of the engine 1, and the heat accumulator 6 stores heat and simultaneously reduces the temperature rise of the cooling liquid of the engine 1. When the temperature of the coolant of the engine 1 exceeds the maximum temperature limit, the coolant of the engine 1 is stored in the heat accumulator 6, and the coolant with lower temperature in the heat accumulator 6 is mixed into a coolant pipeline of the engine 1, so that the temperature rise of the engine 1 is improved, the service life of the engine 1 is prevented from being influenced by overhigh temperature rise, and the heat of the coolant of the engine 1 can be stored for other heat management systems.
When the cell 10 needs to be heated, the heat accumulator 6 enters a heat release mode. The outlet of a cooling liquid pipeline of the engine 1 is disconnected with the inlet of the heat accumulator 6, the water valve 4 is closed, the liquid outlet of the heat accumulator 6 is disconnected with the inlet of the cooling liquid pipeline of the engine 1, and the first water pump 5 drives high-temperature cooling liquid in the heat accumulator 6 to exchange heat with battery cooling liquid through the plate heat exchanger 11 to heat the battery 10. The heat of the engine coolant stored in the heat accumulator 6 is fully utilized to heat the battery 10, so that the heat of the engine coolant is effectively utilized, and more energy is saved.
The second thermal management mode is as follows: engine off cycle mode.
When the engine 1 is stopped, entering an engine stop cycle mode; the engine shutdown cycle mode is: the engine coolant is driven to circulate between the coolant line of the engine 1 and the engine radiator 2 by the first water pump 5. When the engine 1 suddenly stops, the problem of temperature overrun easily occurs, and the temperature is reduced by controlling the first water pump 5 to participate in the circulating driving of the engine coolant. At the moment, the first valve port and the third valve port of the three-way valve 9 are communicated, the water valve 4 is opened, and the first water pump 5 drives the engine cooling liquid to flow through the heat accumulator 6, the water valve 4, the engine radiator 2, the cooling liquid pipeline of the engine 1 and the water valve 4 and return to the heat accumulator 6. The engine radiator 2 is used for realizing natural heat dissipation, and the problem of local temperature overrun is reduced.
The third thermal management mode is: a rapid heat engine mode.
When the hybrid vehicle has a requirement for the heat engine of the whole vehicle, a quick heat engine mode is started, and the quick heat engine mode comprises the following steps: the battery 10 first starts heating the heating film while the engine 1 enters a warm-up state. When the battery 10 is capable of discharging, the motor 15 enters a creep low efficiency heating mode and simultaneously enters a motor waste heat heating mode. And when the temperature of the engine coolant is equal to the first set temperature, stopping the motor waste heat heating mode and entering the engine waste heat heating mode. When the hybrid vehicle is in a low-temperature cold start environment, the battery 10 realizes a rapid heat engine by three heating modes of heating by a heating film, heating by waste heat of a motor, and heating by waste heat of an engine.
The fourth thermal management mode is: and heating the motor by waste heat.
If the temperature of the battery coolant is smaller than the temperature of the motor coolant and smaller than a second set temperature, the second set temperature is the highest temperature that the battery 10 can bear, the first valve port and the fourth valve port of the four-way valve 20 are communicated, the first water pump 5 is closed, the second water pump 12 drives the battery coolant to flow, the battery coolant enters a coolant pipeline of the motor 15 and a coolant pipeline of the motor controller 16 from an outlet of the coolant pipeline of the battery 10, and then enters the battery 10 from an inlet of the coolant pipeline of the battery 10, and the heating by the waste heat of the motor is realized. At this time, the three-way valve 9 and the first stop valve 25 are closed, and the refrigerator 24 and the plate heat exchanger 11 are not operated.
The fifth thermal management mode is as follows: and heating mode by using the waste heat of the engine.
If the temperature of the coolant of the engine 1 is higher than the temperature of the coolant of the battery, the battery 10 enters a battery self-circulation mode, a first valve port and a second valve port of a three-way valve 9 are communicated, a water valve 4 is opened, and the engine coolant exchanges heat with the battery coolant through a plate heat exchanger 11 under the driving of a mechanical water pump.
The sixth thermal management mode is: battery self-cycling mode.
When the battery 10 is self-circulated, the first valve port and the second valve port of the four-way valve 20 are communicated, and the second water pump 12 drives the battery coolant to circulate in the coolant pipeline of the battery 10, so that the temperature balance of the battery 10 is realized. At which time the three-way valve 9 and the first shut-off valve 25 are closed and the refrigerator 24 and the plate heat exchanger 11 are inactive.
The seventh thermal management mode is: an electric drive cooling mode.
The third valve port and the fourth valve port of the four-way valve 20 are communicated, and the motor cooling liquid is driven by the third water pump 19 to reach the motor radiator 18 through the charger 17, the motor controller 16 and the motor 15 for heat dissipation, so that electric driving cooling is realized.
The eighth thermal management mode is: the motor radiator cools the motor mode.
When the hybrid vehicle is operating in a non-electric drive mode, the motor radiator 18 may be preferentially used for cooling if the battery 10 has a heat dissipation requirement. When the temperature of the motor coolant is less than or equal to the temperature of the battery coolant, the third valve port of the four-way valve 20 is communicated with the first valve port, and the second water pump 12 drives the battery coolant to enter the motor radiator 18 through the first valve port and the third valve port of the four-way valve 20 and the coolant pipeline of the charger 17 for heat dissipation. At this point the three-way valve 9 and the first shut-off valve 25 are closed and the refrigerator 24 and the plate heat exchanger 11 are now inactive.
The ninth thermal management mode is: the air conditioning compressor cools the battery mode.
If the motor radiator 18 is used or the heat dissipation requirement of the battery 10 is high, the whole vehicle air-conditioning compressor 21 is started. At this time, the first valve port and the second valve port of the four-way valve 20 are communicated, the first cut-off valve 25 is opened, the second cut-off valve 26 is closed, the air-conditioning compressor 21 compresses the refrigerant, the refrigerant is cooled by the condenser 22, and then enters the refrigerator 24 through the first cut-off valve 25, the second water pump 12 drives the battery coolant, and the flow direction of the battery coolant is consistent with the battery self-circulation mode. At this point the three-way valve 9 is closed and the plate heat exchanger 11 is inactive.
The tenth thermal management mode is: a park charge cooling mode.
When the charger 17 is used for charging while parking, the cooling principle is in the electrically-driven cooling mode.
The eleventh thermal management mode is: a parking charge heating mode.
Heating is performed using a heating film provided in the battery 10.
The twelfth thermal management mode is: the cab is cooled and heated.
The cab is cooled by the air conditioner compressor 21, and at this time, the first stop valve 25 is closed and the second stop valve 26 is opened. After being cooled by the condenser 22, the refrigerant of the air-conditioning compressor 21 enters the evaporator 23 through the second stop valve 26, and the evaporator 23 provides cold air for the cab. The cab heating is performed by using the coolant of the engine 1 or APTC8 with higher temperature.
According to the control method of the thermal management system of the hybrid vehicle, under the condition that the structure of the existing thermal management system is not changed, cost is reduced through function analysis and cutting, using modes are widened, more integrated thermal management modes are realized, energy consumption is reduced, and endurance is improved. The heat accumulator 6 is utilized to realize the requirement of rapid temperature rise of the battery 10 at low temperature, reduce the loss of electric quantity in a heat engine state and improve the cruising ability; the recovery of the discharge capacity of the battery 10 is accelerated, and the service life of the battery 10 is prolonged.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims (13)

1. A control method of a thermal management system for a hybrid vehicle, characterized by comprising the steps of:
when the temperature of the engine coolant is higher than the maximum temperature limit value, entering a heat storage mode;
the heat storage mode is as follows: the outlet of a cooling liquid pipeline of the engine (1) is communicated with the liquid inlet of the heat accumulator (6), the liquid outlet of the heat accumulator (6) is communicated with the inlet of the cooling liquid pipeline of the engine (1), and the heat accumulator (6) stores heat and simultaneously reduces the temperature rise of engine cooling liquid;
when the engine (1) is stopped, entering an engine stop circulation mode;
the engine shutdown cycle mode is as follows: the engine coolant is driven by a first water pump (5) to circulate between a coolant line of the engine (1) and the engine radiator (2).
2. The control method of the thermal management system of the hybrid vehicle according to claim 1, characterized in that when the battery (10) needs to be heated, the coolant pipeline outlet of the engine (1) is disconnected from the liquid inlet of the heat accumulator (6), the liquid outlet of the heat accumulator (6) is disconnected from the coolant pipeline inlet of the engine (1), and the first water pump (5) drives the high-temperature coolant in the heat accumulator (6) to exchange heat with the battery coolant through the plate heat exchanger (11) to heat the battery (10).
3. The control method of the thermal management system of the hybrid vehicle according to claim 2, characterized in that a rapid heat engine mode is started when the hybrid vehicle has a demand for a complete heat engine, the rapid heat engine mode including the steps of:
the battery (10) starts a heating film to heat, and meanwhile, the engine (1) enters a heat engine state;
when the battery (10) has the discharge capacity, the motor (15) enters a creeping low-efficiency heating mode and simultaneously enters a motor waste heat heating mode;
and when the temperature of the engine coolant is equal to a first set temperature, stopping the motor waste heat heating mode and entering the engine waste heat heating mode.
4. The control method of the thermal management system of the hybrid vehicle according to claim 3, wherein the motor waste heat heating mode is:
and if the temperature of the battery coolant is less than the temperature of the motor coolant and less than a second set temperature, wherein the second set temperature is the highest temperature which can be borne by the battery (10), a second water pump (12) drives the battery coolant to flow, and the battery coolant enters a coolant pipeline of a motor (15) and a coolant pipeline of a motor controller (16) from a coolant pipeline outlet of the battery (10) and then enters the battery (10) from a coolant pipeline inlet of the battery (10).
5. The control method of the thermal management system of the hybrid vehicle according to claim 4, wherein the engine waste heat heating mode is:
and if the temperature of the engine coolant is higher than the temperature of the battery coolant, the battery (10) enters a battery self-circulation mode, and the engine coolant exchanges heat with the battery coolant through the plate heat exchanger (11) under the driving of a mechanical water pump.
6. The control method of the thermal management system of the hybrid vehicle according to claim 5, wherein the battery self-circulation mode is: the second water pump (12) drives the battery coolant to circulate in a coolant pipeline of the battery (10).
7. Hybrid vehicle, comprising a thermal management system, characterized in that the thermal management system adopts a thermal management system control method of the hybrid vehicle according to any one of claims 1 to 6, the thermal management system comprises an engine thermal management system, the engine thermal management system comprises an engine (1), an engine radiator (2), a water valve (4), a first water pump (5) and a heat accumulator (6), the engine radiator (2) is used for radiating engine coolant, and a coolant pipeline outlet of the engine (1) can be communicated with a liquid inlet of the heat accumulator (6); the water pump is characterized in that the first water pump (5) is arranged at an outlet of a cooling liquid pipeline of the engine (1), the water valve (4) is arranged on a parallel branch of an inlet of the cooling liquid pipeline of the engine (1) and an inlet of the engine radiator (2), and the first water pump (5) is used for driving the engine cooling liquid to circulate between the cooling liquid pipeline of the engine (1) and the engine radiator (2).
8. Hybrid vehicle according to claim 7, characterized in that the thermal management system further comprises a battery thermal management system comprising a battery (10), a plate heat exchanger (11) and a second water pump (12), the plate heat exchanger (11) being arranged between the battery thermal management system and the engine thermal management system, the heat accumulator (6) being connectable to a coolant line of the battery (10) via the plate heat exchanger (11), the second water pump (12) being adapted to driving the battery coolant to circulate in the coolant line of the battery (10).
9. The hybrid vehicle according to claim 8, wherein the engine thermal management system further comprises a three-way valve (9), a first valve port of the three-way valve (9) is connected to a coolant line outlet of the engine (1), a second valve port of the three-way valve (9) is connected to one end of a hot water side of a plate heat exchanger (11), the other end of the hot water side of the plate heat exchanger (11) is connected to a coolant line inlet of the engine (1) and a liquid outlet of the heat accumulator (6), one end of a cold water side of the plate heat exchanger (11) is connected to a coolant line inlet of the battery (10), the other end of the cold water side of the plate heat exchanger (11) is connected to a coolant line outlet of the battery (10), and a third valve port of the three-way valve (9) is connected to a liquid inlet of the heat accumulator (6).
10. The hybrid vehicle according to claim 8, wherein the thermal management system further comprises an electric drive thermal management system, the electric drive thermal management system comprises a charger (17), a motor (15), a motor controller (16), a motor radiator (18) and a third water pump (19), a coolant pipeline outlet of the motor (15) is connected with a coolant pipeline inlet of the motor controller (16), a coolant pipeline outlet of the motor controller (16) is connected with a coolant pipeline inlet of the charger (17), a coolant pipeline outlet of the charger (17) is connected with a liquid inlet of the motor radiator (18), a liquid outlet of the motor radiator (18) is connected with a coolant pipeline inlet of the motor (15), and the third water pump (19) is used for driving the charger coolant, the motor coolant and the motor controller coolant to flow through the motor radiator (18) for heat dissipation.
11. The hybrid vehicle according to claim 10, wherein a four-way valve (20) is provided between the battery thermal management system and the electric drive thermal management system, a first valve port of the four-way valve (20) is connected to a coolant line inlet of the battery (10), a second valve port of the four-way valve (20) is connected to a coolant line outlet of the battery (10), a third valve port of the four-way valve (20) is connected to a coolant line inlet of the charger (17), and a fourth valve port of the four-way valve (20) is connected to a coolant line outlet of the motor controller (16).
12. Hybrid vehicle according to claim 8, characterized in that the thermal management system further comprises an air conditioning system comprising an air conditioning compressor (21), a condenser (22) and an evaporator (23), the air conditioning compressor (21) being connected with the evaporator (23), the condenser (22) being connected between the evaporator (23) and the air conditioning compressor (21).
13. The hybrid vehicle according to claim 12, wherein the air conditioning system and the battery thermal management system are connected by a refrigerator (24), a hot-side passage of the refrigerator (24) is connected with the air conditioning system, and a cold-side passage of the refrigerator (24) is connected with the battery thermal management system; the refrigerator (24) is connected in parallel with the evaporator (23), the refrigerator (24) is connected with the condenser (22) through a first stop valve (25), and the evaporator (23) is connected with the condenser (22) through a second stop valve (26).
CN202211173679.5A 2022-09-26 2022-09-26 Hybrid vehicle and control method of thermal management system of hybrid vehicle Pending CN115465089A (en)

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WO2024066110A1 (en) * 2022-09-26 2024-04-04 潍柴动力股份有限公司 Thermal management system control method for hybrid vehicle, and hybrid vehicle

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EP2873826B1 (en) * 2013-11-15 2019-03-27 Volvo Car Corporation Heat storage in engine cooling system
DE102017211303A1 (en) * 2017-07-04 2019-01-10 Ford Global Technologies, Llc Heat storage arrangement for a vehicle battery and method for their operation
JP7111635B2 (en) * 2019-01-28 2022-08-02 本田技研工業株式会社 Heat distribution device for hybrid vehicle
JP7094908B2 (en) * 2019-02-25 2022-07-04 本田技研工業株式会社 Battery heating device for hybrid vehicles
CN114046200B (en) * 2021-11-09 2023-02-17 上海新动力汽车科技股份有限公司 Anti-overheating cooling system of hybrid power engine and control method thereof
CN115465089A (en) * 2022-09-26 2022-12-13 潍柴动力股份有限公司 Hybrid vehicle and control method of thermal management system of hybrid vehicle

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WO2024066110A1 (en) * 2022-09-26 2024-04-04 潍柴动力股份有限公司 Thermal management system control method for hybrid vehicle, and hybrid vehicle

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