CN111231619A - Vehicle thermal management system and vehicle - Google Patents
Vehicle thermal management system and vehicle Download PDFInfo
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- CN111231619A CN111231619A CN201811446696.5A CN201811446696A CN111231619A CN 111231619 A CN111231619 A CN 111231619A CN 201811446696 A CN201811446696 A CN 201811446696A CN 111231619 A CN111231619 A CN 111231619A
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- battery pack
- loop
- temperature
- coolant
- heat
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- 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
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- 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
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
- B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
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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
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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
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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
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- 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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- 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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- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The utility model relates to a vehicle thermal management system and vehicle, vehicle thermal management system includes first return circuit (1), second return circuit (2) and third return circuit (3), arranged first water pump (4), heater (5), heat exchanger (6) and warm braw core (7) on first return circuit (1), arranged second water pump (8), battery package (10) and first proportional solenoid valve (11) on second return circuit (2), arranged engine (14) and four-way valve (13) on third return circuit (3), heat exchanger (6) still arrange on second return circuit (2), four-way valve (13) still arrange on first return circuit (1). Through the technical scheme, when the temperature of the engine is low, the heating requirements of the warm air core body and the battery pack can be met through the heater, and when the temperature of the engine is high, the heat of the engine is reasonably utilized to heat the warm air core body and the battery pack, so that the cruising ability of the vehicle is improved.
Description
Technical Field
The disclosure relates to the technical field of vehicle production and manufacturing, in particular to a vehicle thermal management system and a vehicle using the same.
Background
In order to ensure that the battery pack has high charging and discharging efficiency, proper working temperature is required, and the performance and the cruising ability of a vehicle are greatly influenced by overhigh or low temperature, so that the battery pack needs to be heated when the temperature of the battery pack is excessively low so as to ensure that the battery pack has proper working temperature, and in the prior art, the PTC heater is usually adopted for heating the battery pack.
For satisfying the demand that the passenger compartment heated, the warm braw core also need the heating, because the heating temperature that the warm braw core required is different with the heating temperature that the battery package required, for convenient separately controlled temperature, in prior art, the warm braw core has its independent PTC heater, that is to say, there are two PTC heaters in the vehicle, one is the battery package heating, one is the warm braw core heating, because PTC heater power is high, thereby it is big to lead to the electric energy demand, is unfavorable for electric vehicle's continuation of the journey.
Disclosure of Invention
It is a primary object of the present disclosure to provide a vehicle thermal management system to overcome the problems in the related art.
In order to achieve the above object, the present disclosure provides a vehicle thermal management system, including a first loop, a second loop, and a third loop, wherein a first water pump, a heater, a heat exchanger, and a warm air core are disposed on the first loop, a second water pump, a battery pack, and a first proportional solenoid valve are disposed on the second loop, an engine and a four-way valve are disposed on the third loop, the heat exchanger is further disposed on the second loop, and the four-way valve is further disposed on the first loop.
Optionally, the second circuit further comprises a solenoid valve, and the solenoid valve is connected in parallel with the second water pump and the battery pack.
Optionally, the second circuit further comprises a check valve disposed at the coolant outlet of the solenoid valve.
Optionally, the solenoid valve is a second proportional solenoid valve.
Optionally, a temperature sensor is further disposed on the second circuit, the temperature sensor is configured to detect coolant temperature information from the second circuit, and the first proportional solenoid valve is configured to adjust a valve opening of the first proportional solenoid valve according to the coolant temperature information.
Optionally, the temperature sensor is disposed at a coolant inlet of the battery pack.
Optionally, the first proportional solenoid valve, the heat exchanger, the second water pump, the temperature sensor, and the battery pack are connected in series in sequence.
Optionally, the heat exchanger is disposed between the heater and the warm air core.
Optionally, the first water pump, the heater, the heat exchanger, the warm air core and the four-way valve are sequentially connected in series.
Through the technical scheme, the four-way valve is arranged on the first loop and the third loop at the same time, and the heat exchanger is arranged on the first loop and the second loop at the same time, when the first loop and the third loop are not communicated with each other by controlling the four-way valve, the warm air core and/or the battery pack can be heated by the heater in the first loop, when the first loop and the third loop are communicated by controlling the four-way valve, the warm air core and/or the battery pack can be heated by heat emitted by the engine, and at the moment, the heater is in a closed state. Like this, when the engine temperature is low, can satisfy the heating demand of warm braw core and battery package through the heater, when the engine temperature is high, rationally utilize the heat of engine to heat warm braw core and battery package, avoid using the waste of the electric energy that the heater caused, and then improved battery package and vehicle duration.
According to another aspect of the disclosure, a vehicle is provided that includes the vehicle thermal management system described above.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a flow chart of a vehicle thermal management system provided by an exemplary embodiment of the present disclosure.
Description of the reference numerals
1 first loop 2 second loop
3 third circuit 4 first water pump
5 heater 6 heat exchanger
7 warm air core 8 second water pump
9 temperature sensor 10 battery package
11 first proportional solenoid valve 12 second proportional solenoid valve
13 four-way valve 14 engine
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
As shown in fig. 1, the present disclosure provides a vehicle thermal management system, including a first loop 1, a second loop 2, and a third loop 3, a first water pump 4, a heater 5, a heat exchanger 6, and a warm air core 7 are disposed on the first loop 1, a second water pump 8, a battery pack 10, and a first proportional solenoid valve 11 are disposed on the second loop 2, an engine 14 and a four-way valve 13 are disposed on the third loop 3, the heat exchanger 6 is further disposed on the second loop 2, and the four-way valve 13 is further disposed on the first loop 1. In other words, the coolant in the first circuit 1 can be transferred with heat from the coolant in the second circuit 2 through the heat exchanger 6, and the third circuit 3 can be connected to or disconnected from the first circuit 1 by controlling the connection and disconnection of the respective ports of the four-way valve 13.
The four-way valve 13 has four ports of a port, a port B, a port C and a port D, in a specific embodiment provided by the present disclosure, the port a and the port C of the four-way valve 13 are located on the first loop 1, the port B and the port D of the four-way valve 13 are located on the third loop 3, when the port a and the port C of the four-way valve 13 are conducted and the port B and the port D are conducted, the cooling liquid in the first loop 1 and the cooling liquid in the third loop 3 circularly flow in the respective loops without mutual interference; when the ports a and B of the four-way valve 13 are connected and the ports C and D are connected, the coolant can flow from the first circuit 1 into the second circuit 2 through the ports C and D of the four-way valve 13 and then flow from the second circuit 2 into the first circuit 1 through the ports B and a of the four-way valve 13, thereby circulating in the first circuit 1 and the third circuit 3.
In the first loop 1, the first water pump 4 can ensure that the coolant circularly flows in the first loop 1, and the heater 5 can be used for heating the coolant in the first loop 1, so that the heated high-temperature coolant heats the warm air core 7, and heating of the passenger compartment is realized. In the second loop 2, the second water pump 8 can ensure that the cooling liquid circulates in the second loop 2, the cooling liquid in the second loop 2 can flow through the heat exchanger 6, and the heat of the cooling liquid in the first loop 1 is absorbed by the heat exchanger 6 so as to heat the battery pack 10 in the second loop 2, so that the battery pack 10 reaches the proper working temperature. The first proportional solenoid valve 11 in the second circuit 2 can regulate the flow rate and pressure of the coolant flowing through the heat exchanger 6, so that the heated temperature of the coolant in the second circuit 2 can be controlled by controlling the heat absorption capacity of the coolant. Here, as an alternative embodiment, the heat exchanger 6 may be a plate heat exchanger 6, and the heater 5 may be a PTC heater.
Through the technical scheme, as the four-way valve 13 is arranged on the first loop 1 and the third loop 3 at the same time, and the heat exchanger 6 is arranged on the first loop 1 and the second loop 2 at the same time, when the first loop 1 and the third loop 3 are not communicated with each other by controlling the four-way valve 13, the heater 5 in the first loop 1 can be used for heating the warm air core 7 and/or the battery pack 10, when the first loop 1 and the third loop 3 are communicated by controlling the four-way valve 13, the warm air core 7 and/or the battery pack 10 can be heated by heat emitted by the engine 14, and at the moment, the heater 5 is in a closed state. Like this, when engine 14 temperature is low, can satisfy the heating demand of warm braw core 7 and battery package 10 through heater 5, when engine 14 temperature is high, rationally utilized the heat of engine 14 to heat warm braw core 7 and battery package 10, avoid using the waste of the electric energy that heater 5 caused, and then improved battery package 10 and vehicle duration.
Further, in an embodiment provided by the present disclosure, as shown in fig. 1, a temperature sensor 9 may be further disposed on the second circuit 2, the temperature sensor 9 is configured to detect the coolant temperature information of the second circuit 2, and the first proportional solenoid valve 11 is configured to adjust the valve opening of the first proportional solenoid valve 11 according to the detected coolant temperature information. For example, the temperature sensor 9 may be configured to detect a temperature of the coolant after heat absorption by the heat exchanger 6, and the first proportional solenoid valve 11 may control a valve opening according to the temperature detected by the temperature sensor 9, so as to adjust a flow rate and a pressure of the coolant flowing through the heat exchanger 6, and further adjust a temperature of the coolant in the second loop 2, so that the temperature of the coolant can meet a heating requirement of the battery pack 10, and it is ensured that the temperature of the coolant is not too high, which may cause damage to the battery pack 10.
In a specific embodiment, the temperature sensor 9 may be disposed at a coolant inlet of the battery pack 10, so that the temperature of the coolant detected by the temperature sensor 9 is the temperature of the coolant about to flow into the battery pack 10, thereby improving the control accuracy and control effect of the first proportional solenoid valve 11 and ensuring that the battery pack 10 can reach its required heating temperature.
In the second loop 2, there are various arrangements of specific positions of the devices, for example, in one embodiment provided by the present disclosure, as shown in fig. 1, the first proportional solenoid valve 11, the heat exchanger 6, the second water pump 8, the temperature sensor 9, and the battery pack 10 are connected in series in sequence. In this way, it is ensured that the second water pump 8 can pump the coolant in the heat exchanger 6 to the battery pack 10 to heat the battery pack 10, and the first proportional solenoid valve 11 can regulate the flow rate and pressure of the coolant to be flowed into the heat exchanger 6. In other embodiments, the first proportional solenoid valve 11, the heat exchanger 6, the temperature sensor 9, the second water pump 8, and the battery pack 10 may be connected in series in this order.
Returning to the first circuit 1, in one embodiment provided by the present disclosure, the heat exchanger 6 is disposed between the heater 5 and the warm air core 7, such that the high temperature coolant heated by the heater 5 first transfers a portion of its heat to the coolant in the second circuit 2 through the heat exchanger 6, first heats the battery pack 10, and then flows to the warm air core 7 to heat the warm air core 7. In other embodiments, the warm air core 7 may be disposed between the heater 5 and the heat exchanger 6, that is, the heated high-temperature coolant may be used to heat the warm air core 7 first and then the battery pack 10, since the required heating temperature of the warm air core 7 is usually 90 ℃, the required heating temperature of the battery pack 10 is usually 20-30 ℃, and the required heating temperature of the battery pack 10 is lower than the required heating temperature of the warm air core 7, the high-temperature coolant can heat the warm air core 7 first and then the battery pack 10 can also satisfy the heating requirements of the warm air core 7 and the battery pack 10 at the same time.
Various arrangements of the specific locations of the devices in the first circuit 1 are possible, for example, in one embodiment provided by the present disclosure, the first water pump 4, the heater 5, the heat exchanger 6, the heater core 7, and the four-way valve 13 are connected in series in sequence. When the engine 14 is used for heating, the first water pump 4 may pump the high-temperature coolant heated by the engine 14 to the heat exchanger 6 to heat the battery pack 10 and/or the warm air core 7. In other embodiments, the first water pump 4, the heater 5, the warm air core 7, the heat exchanger 6, and the four-way valve 13 are connected in series in this order, or the first water pump 4, the four-way valve 13, the heater 5, the heat exchanger 6, and the warm air core 7 are connected in series in this order.
Furthermore, as mentioned above, the required heating temperature of the warm air core 7 is usually 90 ℃, and the required heating temperature of the battery pack 10 is usually 20-30 ℃, when the warm air core 7 and the battery pack 10 simultaneously have heating requirements, the heater 5 or the engine 14 will heat the coolant to the required heating temperature of the warm air core 7, at this time, the temperature of the coolant is high, and after heat exchange is performed through the heat exchanger 6, the temperature of the coolant in the second circuit 2 is easily too high, so that the battery pack 10 is damaged due to the too high temperature of the coolant.
Therefore, returning to the second circuit 2, in order to maintain the coolant in the second circuit 2 at the desired heating temperature required by the battery pack 10 at all times, in one embodiment provided by the present disclosure, the second circuit 2 further includes a solenoid valve connected in parallel with the second water pump 8 and the battery pack 10. In this way, a part of the low-temperature coolant flowing out of the battery pack 10 flows into the heat exchanger 6 to absorb heat again, and a part of the low-temperature coolant is mixed with the high-temperature coolant flowing out of the heat exchanger 6 through the solenoid valve, so that the temperature of the coolant about to flow into the battery pack 10 is reduced, and the second water pump 8 pumps the coolant in which the high-temperature coolant and the low-temperature coolant are mixed to the battery pack 10, so that the temperature of the coolant flowing into the battery pack 10 is not excessively high. Here, due to the second water pump 8, the coolant flowing out of the heat exchanger 6 will flow to the battery pack 10 through the second water pump 8 without flowing back into the solenoid valve by the suction force of the second water pump 8.
Further, in order to ensure that the coolant flowing out of the heat exchanger 6 will not flow back to the solenoid valve, the second loop 2 further comprises a check valve disposed at the coolant outlet of the solenoid valve, so as to further improve the stability of the vehicle thermal management system provided by the present disclosure, and ensure the normal operation of the vehicle thermal management system.
Further, in one embodiment, the solenoid valve is a second proportional solenoid valve 12, so that the flow rate of the low-temperature coolant for mixing with the high-temperature coolant flowing out of the heat exchanger 6 is adjusted by adjusting the valve opening degree thereof. In addition, because the flow resistance of the heat exchanger 6 is large, the solenoid valve is set as the second proportional solenoid valve 12 with the adjustable valve opening degree, so that enough low-temperature cooling liquid can flow through the heat exchanger 6 to absorb heat and raise the temperature.
The vehicle thermal management system provided by the present disclosure can have at least six different operation modes by operating the opening and closing of the heater 5, the first proportional solenoid valve 11, the second proportional solenoid valve 12, and the conduction of the corresponding port of the four-way valve 13. The cycling process and principles of the vehicle thermal management system provided by the present disclosure in different operating modes will be described in detail below with reference to fig. 1.
The first working mode is as follows: the heater 5 heats the warm air core 7 mode. The system may be in this mode when the warm air core 7 has a heating demand (i.e., the passenger compartment has a heating demand), the battery pack 10 has no heating demand, and the residual heat of the engine 14 is insufficient to heat the coolant to heat the warm air core 7. In the mode, the first water pump 4 and the heater 5 are started, the port A and the port C of the four-way valve 13 are conducted, the port B and the port D are conducted, the first proportional solenoid valve 11 is closed, so that the cooling liquid in the second loop 2 does not flow through the heat exchanger 6 to absorb heat and raise the temperature, the cooling liquid in the third loop 3 cannot flow into the first loop 1, the high-temperature cooling liquid heated by the heater 5 flows to the warm air core 7 to release heat to the passenger compartment of the vehicle so as to heat the passenger compartment, the low-temperature cooling liquid after releasing heat at the warm air core 7 returns to the heater 5 to be reheated under the action of the first water pump 4, and the heating temperature required by the warm air core 7 can be adjusted by adjusting the heating power, the heating temperature and the like of the heater 5. In this mode, the second proportional solenoid valve 12 may be opened, so that the second water pump 8, the battery pack 10, and the second proportional solenoid valve 12 are connected in series to form a loop, and the cooling fluid may circulate in the loop under the action of the second water pump 8 to adjust the temperature of the battery pack 10, so as to keep the temperatures of the positions of the battery pack 10 consistent, and avoid the situations that the temperature of a certain position is high and the temperature of a certain position is low in the battery pack 10.
And a second working mode: the heater 5 heats the battery pack 10. When there is a heating demand on the battery pack 10, there is no heating demand on the warm air core 7 (i.e., there is no heating demand on the passenger compartment), and the residual heat of the engine 14 is insufficient to heat the coolant to heat the battery pack 10, the system may be in this mode to heat the battery pack 10 using the heater 5. In this mode, the first water pump 4, the heater 5, the second water pump 8, and the first proportional solenoid valve 11 are turned on, the port a and the port C of the four-way valve 13 are connected, and the port B and the port D are connected, so that the coolant heated by the heater 5 transfers heat to the coolant in the second circuit 2 through the heat exchanger 6, thereby heating the battery pack 10. In this mode, the heating temperature of the battery pack 10 can be adjusted by adjusting the heating power, the heating temperature, and the like of the heater 5.
And a third working mode: the heater 5 heats the warm air core 7 and the battery pack 10 simultaneously. When the battery pack 10 has a heating demand and the heater core 7 also has a heating demand (i.e., the passenger compartment has a heating demand), and the residual heat of the engine 14 is insufficient to heat the coolant to heat the battery pack 10 and the heater core 7, the system may be in this mode to simultaneously heat the battery pack 10 and the heater core 7 with the heater 5. In this mode, the heater 5, the first water pump 4, the second water pump 8 and the first proportional solenoid valve 11 are opened, the port a and the port C of the four-way valve 13 are connected, the port B and the port D are connected, the high-temperature coolant heated by the heater 5 flows to the heat exchanger 6 to dissipate heat to the coolant in the second loop 2, and then the warm air core 7 is heated, the valve opening of the first proportional solenoid valve 11 is adjusted, so that the temperature of the coolant in the second loop 2 is adjusted, and thus, different heating requirements of the warm air core 7 and the battery pack 10 can be met by the heater 5. In this mode, if the temperature of the coolant in the second circuit 2 is too high, the second proportional solenoid valve 12 can be opened, so that a portion of the low-temperature coolant flowing out of the battery pack 10 can be used to lower the temperature of the high-temperature coolant flowing out of the heat exchanger 6, thereby ensuring that the temperature of the coolant in the second circuit 2 can heat the battery pack 10 without damaging the battery pack 10.
And a fourth working mode: the engine 14 heats the warm air core 7 by waste heat. When the warm air core 7 has a heating demand (i.e., the passenger compartment has a heating demand), the battery pack 10 has no heating demand, and the waste heat emitted from the engine 14 is sufficient to heat the coolant to heat the warm air core 7, the system may be in this mode to heat the warm air core 7 with the heat of the engine 14. In this mode, the heater 5 is turned off, the first water pump 4 is turned on, the ports B and C of the four-way valve 13 are conducted, the port a and the port D are conducted, and the first proportional solenoid valve 11 is turned off, so that the high-temperature coolant heated by the engine 14 flows to the heater core 7 by the first water pump 4 to heat the passenger compartment, and the coolant in the second circuit 2 does not flow through the heat exchanger 6 to be heated. In this mode, the second proportional solenoid valve 12 may be opened, so that the second water pump 8, the battery pack 10, and the second proportional solenoid valve 12 are connected in series to form a loop, and the cooling fluid may circulate in the loop under the action of the second water pump 8 to adjust the temperature of the battery pack 10, so as to keep the temperatures of the positions of the battery pack 10 consistent, and avoid the situations that the temperature of a certain position is high and the temperature of a certain position is low in the battery pack 10.
And a fifth working mode: the battery pack 10 is heated by the waste heat of the engine 14. When there is a heating demand on the battery pack 10, there is no heating demand on the warm air core 7 (i.e., there is no heating demand on the passenger compartment), and the residual heat of the engine 14 is sufficient to heat the coolant to heat the battery pack 10, the system may be in this mode to heat the battery pack 10 using the heat of the engine 14. In this mode, the heater 5 is turned off, the first water pump 4, the second water pump 8, and the first proportional solenoid valve 11 are turned on, the port B and the port C of the four-way valve 13 are connected, and the port a and the port D are connected, so that the coolant heated by the engine 14 transfers heat to the coolant in the second circuit 2 through the heat exchanger 6 to heat the battery pack 10, and the temperature of the coolant in the second circuit 2 can be adjusted by adjusting the valve opening degree of the first proportional solenoid valve 11, and at this time, the fan for blowing air to the warm air core 7 is not turned on.
And a sixth working mode: the waste heat of the engine 14 simultaneously heats the warm air core 7 and the battery pack 10. When the battery pack 10 has a heating demand and the heater core 7 also has a heating demand (i.e., the passenger compartment has a heating demand), and the residual heat of the engine 14 is sufficient to heat the coolant to heat the battery pack 10 and the heater core 7, the system may be in this mode to heat the battery pack 10 and the heater core 7 with the heat of the engine 14. In this mode, the heater 5 is turned off, the first water pump 4, the second water pump 8 and the first proportional solenoid valve 11 are turned on, the port B and the port C of the four-way valve 13 are connected, the port a and the port D are connected, the coolant heated by the engine 14 flows to the heat exchanger 6 for heat exchange under the action of the first water pump 4, then the warm air core 7 is heated again, the valve opening degree of the first proportional solenoid valve 11 is adjusted, and therefore the temperature of the coolant in the second loop 2 is adjusted, and thus different heating requirements of the warm air core 7 and the battery pack 10 can be met through the heater 5. In addition, in this mode, if the temperature of the coolant in the second circuit 2 is too high, the second proportional solenoid valve 12 may be opened so that a portion of the low-temperature coolant flowing out of the battery pack 10 may be used to lower the temperature of the high-temperature coolant flowing out of the heat exchanger 6, thereby ensuring that the temperature of the coolant in the second circuit 2 can heat the battery pack 10 without damaging the battery pack 10.
According to another aspect of the disclosure, a vehicle is provided that includes the vehicle thermal management system described above.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. A vehicle heat management system is characterized by comprising a first loop (1), a second loop (2) and a third loop (3), wherein a first water pump (4), a heater (5), a heat exchanger (6) and a warm air core body (7) are arranged on the first loop (1), a second water pump (8), a battery pack (10) and a first proportional solenoid valve (11) are arranged on the second loop (2), an engine (14) and a four-way valve (13) are arranged on the third loop (3), the heat exchanger (6) is further arranged on the second loop (2), and the four-way valve (13) is further arranged on the first loop (1).
2. The vehicle thermal management system according to claim 1, characterized in that the second circuit (2) further comprises a solenoid valve connected in parallel with the second water pump (8) and a battery pack (10).
3. The vehicle thermal management system according to claim 2, characterized in that the second circuit (2) further comprises a non-return valve arranged at the coolant outlet of the solenoid valve.
4. The vehicle thermal management system of claim 2, wherein the solenoid valve is a second proportional solenoid valve (12).
5. The vehicle thermal management system according to any of claims 1-4, characterized in that a temperature sensor (9) is arranged on the second circuit (2), the temperature sensor (9) being configured to detect coolant temperature information from the second circuit (2), the first proportional solenoid valve (11) being configured to adjust a valve opening of the first proportional solenoid valve (11) in dependence on the coolant temperature information.
6. The vehicle thermal management system according to claim 5, characterized in that the temperature sensor (9) is arranged at a coolant inlet of the battery pack (10).
7. The vehicle thermal management system according to claim 5, characterized in that the first proportional solenoid valve (11), the heat exchanger (6), the second water pump (8), the temperature sensor (9), the battery pack (10) are connected in series in sequence.
8. The vehicle thermal management system according to any of claims 1-4, characterized in that the heat exchanger (6) is arranged between the heater (5) and the warm air core (7).
9. The vehicle thermal management system according to any of claims 1-4, characterized in that the first water pump (4), the heater (5), the heat exchanger (6), the warm air core (7), the four-way valve (13) are connected in series in sequence.
10. A vehicle comprising the vehicle thermal management system of any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN111716995A (en) * | 2020-07-02 | 2020-09-29 | 重庆金康赛力斯新能源汽车设计院有限公司 | Heating system and method for air conditioner and power battery of electric automobile and electric automobile |
| CN111746224A (en) * | 2020-06-16 | 2020-10-09 | 智新控制系统有限公司 | Range-extended electric vehicle thermal management system and control method thereof |
| CN111959348A (en) * | 2020-08-27 | 2020-11-20 | 重庆金康赛力斯新能源汽车设计院有限公司 | Heating control system and method for power battery of electric automobile |
| CN112145749A (en) * | 2020-09-29 | 2020-12-29 | 重庆长安汽车股份有限公司 | Four-way valve, heating loop of heating element and vehicle |
| CN112248760A (en) * | 2020-10-28 | 2021-01-22 | 重庆长安汽车股份有限公司 | Automobile heating and ventilation loop structure and control method |
| CN112373354A (en) * | 2020-11-16 | 2021-02-19 | 武汉格罗夫氢能汽车有限公司 | Thermal management system and control method of hydrogen energy fuel cell automobile |
| CN112599890A (en) * | 2020-12-14 | 2021-04-02 | 潍柴动力股份有限公司 | Battery thermal management system of hybrid vehicle and hybrid vehicle |
| CN114393975A (en) * | 2022-01-27 | 2022-04-26 | 岚图汽车科技有限公司 | Exhaust method and device of vehicle whole vehicle heat management loop |
| CN114953922A (en) * | 2021-07-20 | 2022-08-30 | 长城汽车股份有限公司 | Floor heating device utilizing waste heat of engine and vehicle |
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| CN111959348A (en) * | 2020-08-27 | 2020-11-20 | 重庆金康赛力斯新能源汽车设计院有限公司 | Heating control system and method for power battery of electric automobile |
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| CN112599890A (en) * | 2020-12-14 | 2021-04-02 | 潍柴动力股份有限公司 | Battery thermal management system of hybrid vehicle and hybrid vehicle |
| CN114953922A (en) * | 2021-07-20 | 2022-08-30 | 长城汽车股份有限公司 | Floor heating device utilizing waste heat of engine and vehicle |
| CN114393975A (en) * | 2022-01-27 | 2022-04-26 | 岚图汽车科技有限公司 | Exhaust method and device of vehicle whole vehicle heat management loop |
| CN114393975B (en) * | 2022-01-27 | 2023-05-30 | 岚图汽车科技有限公司 | Exhaust method and device of whole vehicle thermal management loop |
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