CN111251800A - Vehicle thermal management system and vehicle - Google Patents

Vehicle thermal management system and vehicle Download PDF

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Publication number
CN111251800A
CN111251800A CN201811457727.7A CN201811457727A CN111251800A CN 111251800 A CN111251800 A CN 111251800A CN 201811457727 A CN201811457727 A CN 201811457727A CN 111251800 A CN111251800 A CN 111251800A
Authority
CN
China
Prior art keywords
port
air
way valve
conditioning heating
engine cooling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811457727.7A
Other languages
Chinese (zh)
Inventor
刘秀云
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.)
Borgward Automotive China Co Ltd
Original Assignee
Borgward Automotive China Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Borgward Automotive China Co Ltd filed Critical Borgward Automotive China Co Ltd
Priority to CN201811457727.7A priority Critical patent/CN111251800A/en
Publication of CN111251800A publication Critical patent/CN111251800A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating [HVAC] devices
    • B60H1/00357Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00385Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
    • B60H1/004Air-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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating [HVAC] devices
    • B60H1/02Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
    • B60H1/04Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/61Types of temperature control
    • H01M10/613Cooling or keeping cold
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/61Types of temperature control
    • H01M10/615Heating or keeping warm
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/62Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625Vehicles
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/656Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567Liquids
    • H01M10/6568Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/66Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
    • H01M10/663Heat-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
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The utility model relates to a vehicle thermal management system and vehicle, vehicle thermal management system includes engine cooling circuit, air conditioner heating circuit and fluid auto-change over device, be provided with engine, first water pump and first radiator on the engine cooling circuit, be provided with heater, second water pump and warm braw core on the air conditioner heating circuit, engine coolant liquid circuit with the air conditioner heating circuit passes through fluid auto-change over device links to each other, fluid auto-change over device is used for controlling engine cooling circuit with air conditioner heating circuit is optionally mutually independent or fluid intercommunication. The vehicle heat management system provided by the disclosure can establish fluid connection between the engine cooling loop and the air conditioner heating loop, so that the passenger compartment is heated by reasonably utilizing the waste heat of the engine, the utilization rate of the energy of the whole vehicle can be improved, and the energy loss of the whole vehicle is reduced.

Description

Vehicle thermal management system and vehicle
Technical Field
The disclosure relates to the field of thermal management of vehicles, in particular to a vehicle thermal management system and a vehicle.
Background
In a thermal management system of a hybrid vehicle, an engine cooling circuit is generally independent of other thermal management circuits, and therefore, heat generated by an engine is dissipated to the outside through a radiator in the cooling circuit, which causes waste of heat. The air conditioning heat management system and the battery heat management system usually only rely on a heater for heating, the energy consumption burden is large, and the heating efficiency of the passenger compartment and the heating efficiency of the battery are low.
Disclosure of Invention
The vehicle thermal management system can reasonably utilize the heat of an engine, improve the utilization rate of energy and reduce energy loss.
In order to achieve the above object, the present disclosure provides a vehicle thermal management system, including an engine cooling circuit, an air-conditioning heating circuit, and a fluid switching device, where the engine cooling circuit is provided with an engine, a first water pump and a first radiator, the air-conditioning heating circuit is provided with a heater, a second water pump and a warm air core, the engine cooling circuit and the air-conditioning heating circuit are connected by the fluid switching device, and the fluid switching device is used to control the engine cooling circuit and the air-conditioning heating circuit to be selectively independent from each other or in fluid communication.
Optionally, the fluid switching device is a first three-way valve, a first port of the first three-way valve is respectively communicated with the engine coolant loop and the air-conditioning heating loop, a second port of the first three-way valve is communicated with the engine coolant loop, a third port of the first three-way valve is communicated with the air-conditioning heating loop, and when the first port and the third port of the first three-way valve are communicated and both the first port and the third port are disconnected from the second port, the engine cooling loop and the air-conditioning heating loop are independent of each other; when the second port and the third port of the first three-way valve are communicated and the second port and the third port are disconnected from the first port, the engine cooling circuit is in fluid communication with the air-conditioning heating circuit.
Optionally, the engine cooling circuit includes an engine cooling trunk, a first engine cooling branch and a second engine cooling branch, the engine and the first water pump are disposed on the engine cooling trunk, the first radiator and the thermostat are disposed on the first engine cooling branch, an oil cooler and a first on-off valve are disposed on the second engine cooling branch, an outlet of the engine cooling trunk is communicated with a first port of the first three-way valve, and an inlet of the engine cooling trunk is communicated with a second port of the first three-way valve.
Optionally, the air-conditioning heating return circuit includes air-conditioning heating main road, first air-conditioning heating branch road and second air-conditioning heating branch road, be provided with on the air-conditioning heating main road the second water pump with the heater, be provided with on the first air-conditioning heating branch road the warm braw core body, be provided with first heat exchanger on the second air-conditioning heating branch road, vehicle thermal management system still includes power battery thermal management return circuit, power battery thermal management return circuit with the air-conditioning heating return circuit passes through first heat exchanger carries out the heat transfer, the entry on air-conditioning heating main road with the first port intercommunication of first three-way valve, the export on first air-conditioning heating branch road with the export on second air-conditioning heating branch road all with the third port intercommunication of first three-way valve.
Optionally, the fluid switching device is a four-way valve, a first port and a second port of the four-way valve are respectively communicated with the engine coolant loop, a third port and a fourth port of the four-way valve are respectively communicated with the air-conditioning heating loop, and when the first port and the second port of the four-way valve are communicated and the third port and the fourth port of the four-way valve are communicated, the engine cooling loop and the air-conditioning heating loop are independent of each other; when the first port and the fourth port of the four-way valve are conducted and the second port and the third port of the four-way valve are conducted, the engine cooling circuit and the air-conditioning heating circuit are in fluid communication.
Optionally, the engine cooling circuit includes an engine cooling trunk, a first engine cooling branch and a second engine cooling branch, the engine and the first water pump are disposed on the engine cooling trunk, the first radiator and the thermostat are disposed on the first engine cooling branch, an oil cooler and a first on-off valve are disposed on the second engine cooling branch, an outlet of the engine cooling trunk is communicated with a first port of the four-way valve, and an inlet of the engine cooling trunk is communicated with a second port of the four-way valve.
Optionally, the air-conditioning heating loop comprises an air-conditioning heating main path, a first air-conditioning heating branch path and a second air-conditioning heating branch path, the air-conditioning heating main path is provided with the second water pump and the heater, the first air-conditioning heating branch path is provided with the warm air core body, the second air-conditioning heating branch path is provided with a first heat exchanger, the vehicle heat management system further comprises a power battery heat management loop, the power battery heat management loop and the air-conditioning heating loop exchange heat through the first heat exchanger, an inlet of the air-conditioning heating main path is communicated with a fourth port of the four-way valve, and an outlet of the first air-conditioning heating branch path and an outlet of the second air-conditioning heating branch path are communicated with a third port of the four-way valve.
Optionally, the vehicle thermal management system further includes a second three-way valve, an outlet of the air-conditioning heating main line is communicated with a first port of the second three-way valve, an outlet of the first air-conditioning heating branch is communicated with a second port of the second three-way valve, and an inlet of the second air-conditioning heating branch is communicated with a third port of the second three-way valve.
Optionally, the vehicle thermal management system further comprises an air-conditioning refrigeration loop and a second heat exchanger, and the power battery thermal management loop and the air-conditioning refrigeration loop exchange heat through the second heat exchanger.
Another aspect of the present disclosure also provides a vehicle including a vehicle thermal management system as described above.
Through the technical scheme, the vehicle heat management system provided by the disclosure can establish fluid connection between the engine cooling loop and the air conditioner heating loop, so that the passenger compartment is heated by reasonably utilizing the waste heat of the engine, the utilization rate of the energy of the whole vehicle can be improved, and the energy loss of the whole vehicle is reduced.
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 schematic structural diagram of a vehicle thermal management system according to a first embodiment of the disclosure;
FIG. 2 is a schematic diagram of an engine cooling circuit according to a first embodiment of the disclosure;
fig. 3 is a schematic structural diagram of an air-conditioning heating loop in a first embodiment of the disclosure;
FIG. 4 is a schematic diagram of a configuration in which an engine cooling circuit and an air conditioning heating circuit are in fluid communication according to a first embodiment of the disclosure;
FIG. 5 is a schematic structural diagram of a vehicle thermal management system according to a second embodiment of the disclosure;
fig. 6 is a schematic structural diagram of a vehicle thermal management system in a third embodiment of the disclosure.
Description of the reference numerals
1 engine 2 first water pump
3 first radiator 4 heater
5 second water pump 6 warm air core
7 thermostat 8 oil cooler
9 first on-off valve 10 first heat exchanger
11 first three-way valve 12 power battery
13 third water pump 14 second three-way valve
15 second heat exchanger 16 compressor
17 condenser 18 evaporator
19 thermostatic expansion valve 20 second on-off valve
21 electronic expansion valve 22 four-way valve
23 intercooler 24 fourth Water Pump
25 second radiator 26 turbo cooler
27 cooling fan 28 fifth water pump
29 third radiator 30 front motor
31 front electric control 32 rear motor
33 post-electronic control 34 DC-DC converter
35 vehicle charger 36 third three-way valve
100 engine cooling trunk 101 first engine cooling branch
102 second engine cooling branch 200 air-conditioning heating main road
201 first air-conditioning heating branch 202 second air-conditioning heating branch
300 refrigerant main line 301 first refrigerant branch
302 second refrigerant branch 400 motor cooling main line
401 first motor cooling branch 402 second motor cooling branch
A first cooling liquid inlet, B first cooling liquid outlet
C second cooling liquid inlet D second cooling liquid outlet
E first three-way valve first port G first three-way valve second port
F first three-way valve third port I four-way valve first port
Second port of K four-way valve and third port of J four-way valve
Fourth port of H four-way valve L first port of second three-way valve
M second three-way valve second port N second three-way valve third port
O third three-way valve first Port Pthird three-way valve second Port
Q third three-way valve third port
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.
In the present disclosure, unless otherwise specified, the terms of orientation such as "inlet, refrigerant inlet, coolant inlet, outlet, refrigerant outlet, and coolant outlet" are generally used with respect to the direction of flow of a fluid such as a refrigerant or a coolant, and specifically, the openings through which the fluid flows into components in a vehicle thermal management system such as a condenser, a power battery, and an evaporator are "inlet, refrigerant inlet, and coolant inlet", and the openings through which the fluid flows out of components in the vehicle thermal management system such as a condenser, a power battery, and an evaporator are "outlet, refrigerant outlet, and coolant outlet".
Referring to fig. 1 to 4, a vehicle thermal management system according to a first embodiment of the present disclosure includes an engine cooling circuit, an air-conditioning heating circuit, an air-conditioning cooling circuit, and a power battery thermal management circuit. In addition, the vehicle thermal management system further comprises a fluid switching device which connects the air-conditioning heating circuit and the engine coolant circuit and is used for controlling the engine cooling circuit and the air-conditioning heating circuit to be selectively independent from or communicated with each other in a fluid mode.
Specifically, as shown in fig. 2, an engine 1, a first water pump 2 and a first radiator 3 are arranged on an engine cooling circuit, a heater 4, a second water pump 5 and a warm air core 6 are arranged on an air-conditioning heating circuit, and the engine cooling circuit and the air-conditioning heating circuit can be selectively independent from each other or in fluid communication, so that coolant in the engine cooling circuit can flow through the warm air core 6 in the air-conditioning heating circuit, and heat on the engine 1 is transferred to the warm air core 6 and provided to a passenger compartment, so that waste heat generated by the engine 1 can be reasonably utilized, energy consumption is saved, and heating efficiency of the passenger compartment can be improved.
Alternatively, the engine cooling circuit may include an engine cooling trunk 100, a first engine cooling branch 101 and a second engine cooling branch 102, the engine cooling trunk 100 is provided with an engine 1 and a first water pump 2, the first engine cooling branch 101 is provided with a first radiator 3 and a thermostat 7, and the second engine cooling branch 102 is provided with an oil cooler 8 and a first on-off valve 9.
Alternatively, referring to fig. 3, the air-conditioning heating circuit may include an air-conditioning heating main line 200, a first air-conditioning heating branch line 201, and a second air-conditioning heating branch line 202, wherein a second water pump 5 and a heater 4 are disposed on the air-conditioning heating main line 200, a warm air core 6 is disposed on the first air-conditioning heating branch line 201, and a first heat exchanger 10 is disposed on the second air-conditioning heating branch line 202.
A first three-way valve 11 is used as a fluid switching device in a vehicle thermal management system in a first embodiment of the disclosure, a first port E of the first three-way valve 11 is respectively communicated with an engine coolant loop and an air-conditioning heating loop, a second port G of the first three-way valve 11 is communicated with the engine coolant loop, a third port F of the first three-way valve 11 is communicated with the air-conditioning heating loop, the engine coolant loop and the air-conditioning heating loop are selectively mutually independent or in fluid communication through the first three-way valve 11, and when the first port E of the first three-way valve 11 is communicated with the third port F and the first port E and the third port F are both disconnected from the second port G, the engine coolant loop and the air-conditioning heating loop are mutually independent; when the second port G of the first three-way valve 11 is conducted with the third port F, and both the second port G and the third port F are disconnected from the first port E, the engine cooling circuit and the air-conditioning heating circuit are in fluid communication.
Specifically, an inlet of the air-conditioning heating main line 200 and an outlet of the engine cooling main line 100 are both communicated with a first port E of a first three-way valve, an outlet of the first air-conditioning heating branch line 201 and an outlet of the second air-conditioning heating branch line 202 are both communicated with a third port F of the first three-way valve, and an inlet of the engine cooling main line 100 is communicated with a second port G of the first three-way valve. When the first three-way valve 11 opens the first port E and the third port F of the first three-way valve, the engine cooling circuit and the air-conditioning heating circuit are independent of each other, and at this time, the passenger compartment is heated or a power battery (to be described later) is heated by the heater 4; when the first three-way valve 11 opens the first three-way valve third port F and the first three-way valve second port G, the engine cooling circuit and the air-conditioning heating circuit are in fluid communication (as shown in fig. 4), and at this time, heat generated by the engine 1 can be transferred to the air-conditioning heating circuit for heating the passenger compartment or heating a power battery (described below).
As an alternative arrangement of the present disclosure, in the engine cooling circuit, the first water pump 2 is arranged in the engine 1, and the coolant outlet of the engine 1 is respectively communicated with the coolant inlet of the first radiator 3, the coolant inlet of the oil cooler 8, and the first three-way valve first port E, the coolant outlet of the first radiator 3 is communicated with the coolant inlet of the thermostat 7, the coolant outlet of the oil cooler 8 is communicated with the coolant inlet of the first on-off valve 9, and the coolant outlet of the thermostat 7, the coolant outlet of the first on-off valve 9, and the first three-way valve second port G are all communicated with the coolant inlet of the engine 1. In the air-conditioning heating loop, a coolant outlet of the second water pump 5 is communicated with a coolant inlet of the heater 4, a coolant outlet of the heater 4 is respectively communicated with a coolant inlet of the warm air core 6 and a first coolant inlet A of the first heat exchanger 10, a coolant outlet of the warm air core 6 and a first coolant outlet B of the first heat exchanger 10 are both communicated with a third port F of the first three-way valve, and a first port E of the first three-way valve is also communicated with a coolant inlet of the second water pump 5.
The oil cooler 8 may be an oil cooler of the engine 1, or an oil cooler of a transmission or a clutch, and if there are multiple oil coolers, the multiple oil coolers may be arranged in series on the second engine cooling branch 102, or may be arranged in parallel (as shown in fig. 1) on the second engine cooling branch 102, which is not limited herein.
Further, the vehicle thermal management system according to the first embodiment of the present disclosure further includes a second three-way valve 14, the second three-way valve 14 is disposed in the air-conditioning heating loop, an outlet of the air-conditioning heating main line 200 is communicated with a first port L of the second three-way valve, an outlet of the first air-conditioning heating branch 201 is communicated with a second port M of the second three-way valve, and an inlet of the second air-conditioning heating branch 202 is communicated with a third port N of the second three-way valve. When the second three-way valve first port L and the second three-way valve second port M are opened, the coolant flows through the first air-conditioning heating branch 201 and supplies heat to the passenger compartment through the heater core 6, and when the second three-way valve first port L and the second three-way valve third port N are opened, the coolant flows through the second air-conditioning heating branch 202.
Alternatively, in other embodiments, the specific arrangement of the engine cooling circuit and the air-conditioning heating circuit may be any other suitable arrangement, which is not limited by the present disclosure and falls within the protection scope of the present disclosure. For example, in other embodiments, the second three-way valve 14 may be replaced by two on-off valves respectively provided on the first air-conditioning heating branch 201 and the second air-conditioning heating branch 202.
The vehicle thermal management system further comprises a power battery thermal management loop and an air conditioner refrigeration loop. The power battery heat management loop and the air-conditioning heating loop exchange heat through the first heat exchanger 10 to meet the heating requirement of the power battery 12; the power battery heat management loop and the air conditioning refrigeration loop exchange cold energy through the second heat exchanger 15 to meet the cooling requirement of the power battery 12.
Specifically, in the power battery thermal management loop, a coolant outlet of the power battery 12 is communicated with a coolant inlet of the second heat exchanger 15, a coolant outlet of the second heat exchanger 15 is communicated with a second coolant inlet C of the first heat exchanger 10, and a second coolant outlet D of the first heat exchanger 10 is connected with a coolant inlet of the power battery 12. The heater 4 can be shared by the battery thermal management circuit and the air-conditioning heating circuit through the first heat exchanger 10 to reduce the number of components, and when the engine cooling circuit and the air-conditioning heating circuit are in fluid communication, the waste heat generated by the engine 1 can be transferred to the power battery thermal management circuit through the air-conditioning heating circuit for heating the power battery 12.
The air-conditioning refrigeration circuit comprises a refrigerant trunk line 300, a first refrigerant branch line 301 and a second refrigerant branch line 302, wherein a compressor 16 and a condenser 17 are arranged on the refrigerant trunk line 300, an evaporator 18 and a first expansion valve are arranged on the first refrigerant branch line 301, and a second heat exchanger 15 and a second expansion valve are arranged on the second refrigerant branch line 302. Wherein the first expansion valve may comprise a thermostatic expansion valve 19 and a second shut-off valve 20, and the second expansion valve may be an electronic expansion valve 21.
As an alternative arrangement of the present disclosure, a refrigerant outlet of the compressor 16 is communicated with a refrigerant inlet of the condenser 17, a refrigerant outlet of the condenser 17 is respectively communicated with a refrigerant inlet of the second on-off valve 20 and a refrigerant inlet of the electronic expansion valve 21, a refrigerant outlet of the second on-off valve 20 is communicated with a refrigerant inlet of the thermal expansion valve 19, a refrigerant outlet of the thermal expansion valve 19 is communicated with a refrigerant inlet of the evaporator 18, a refrigerant outlet of the electronic expansion valve 21 is communicated with a refrigerant inlet of the second heat exchanger 15, and a refrigerant outlet of the evaporator 18 and a refrigerant outlet of the second heat exchanger 15 are both communicated with a refrigerant inlet of the compressor 16. The power battery 12 can be cooled using an air conditioning refrigeration circuit by means of the second heat exchanger 15.
In the first embodiment of the present disclosure, the condenser 17 in the air-conditioning refrigeration circuit and the first radiator 3 in the engine cooling circuit share one cooling fan 27, so that the number of components of the vehicle thermal management system can be reduced.
As shown in fig. 5, a second embodiment of the present disclosure further provides a vehicle thermal management system, which is different from the first embodiment only in that the fluid switching device is replaced by a four-way valve 22 from a first three-way valve 11, and accordingly, the arrangement of the engine cooling circuit and the air-conditioning heating circuit is modified as follows:
a first port I and a second port K of the four-way valve 22 are respectively communicated with the engine coolant loop, and a third port J and a fourth port H of the four-way valve 22 are respectively communicated with the air-conditioning heating loop. When the first port I of the four-way valve 22 is conducted with the second port K, and the third port J of the four-way valve 22 is conducted with the fourth port H, the engine cooling circuit and the air-conditioning heating circuit are independent of each other; when the first port I of the four-way valve 22 is conducted with the fourth port H, and the second port K of the four-way valve 22 is conducted with the third port J, the engine cooling circuit and the air-conditioning heating circuit are in fluid communication.
Specifically, the inlet of the air-conditioning heating main line 200 is communicated with a fourth port H of the four-way valve, the outlet of the engine cooling main line 100 is communicated with a first port I of the four-way valve, the outlet of the first air-conditioning heating branch 201 and the outlet of the second air-conditioning heating branch 202 are both communicated with a third port J of the four-way valve, and the inlet of the engine cooling main line 100 is communicated with a second port K of the four-way valve. When the fourth port H of the four-way valve is communicated with the first port I of the four-way valve and the second port K of the four-way valve is communicated, the engine cooling loop and the air-conditioning heating loop are mutually independent, and when the fourth port H of the four-way valve is communicated with the first port I of the four-way valve and the third port J of the four-way valve is communicated with the second port K of the four-way valve, the engine cooling loop and the air-conditioning heating loop are communicated by fluid.
The remaining components and their arrangement of the vehicle thermal management circuit in the second embodiment of the disclosure are the same as those in the first embodiment, and are not described herein again.
As shown in fig. 6, a third embodiment of the present disclosure further provides a vehicle thermal management system, which adds an intercooler cooling circuit and an electric machine cooling circuit on the basis of the vehicle thermal management system in the first embodiment or the second embodiment.
Specifically, the intercooler cooling circuit includes an intercooler 23, a fourth water pump 24, and a second radiator 25, specifically, a coolant outlet of the fourth water pump 24 communicates with a coolant inlet of the intercooler 23, a coolant outlet of the intercooler 23 communicates with a coolant inlet of the second radiator 25, and a coolant outlet of the second radiator 25 communicates with a coolant inlet of the fourth water pump 24, wherein the second radiator 25 is arranged near the first radiator 3 and shares one cooling fan 27 with the first radiator 3.
Optionally, the intercooler cooling circuit may further comprise a turbine cooler 26, the turbine cooler 26 may be arranged in parallel with the intercooler 23, optionally, the intercooler cooling circuit may further comprise a third shut-off valve, which may be arranged in series with the turbine cooler 26, to enable cooling of the intercooler 23 and the turbine cooler 26, respectively.
When the intercooler 23 or the turbo cooler 26 has a heat radiation demand, the fourth water pump 24 and the second radiator 25 are activated to radiate heat from the intercooler 23 or the turbo cooler 26.
The motor cooling circuit includes a motor cooling main circuit 400, a first motor cooling branch circuit 401 and a second motor cooling branch circuit 402, a fifth water pump 28 and a third radiator 29 are arranged on the motor cooling main circuit 400, a front motor 30 and a front electronic controller 31 are arranged on the first motor cooling branch circuit 401, a rear motor 32 and a rear electronic controller 33 are arranged on the second motor cooling branch circuit 402, the motor cooling circuit further includes a DC-DC converter 34 and an onboard charger 35, and the DC-DC converter 34 and the onboard charger 35 may be arranged on the first motor cooling branch circuit 401 or the second motor cooling branch circuit 402, which is not limited herein.
As an alternative arrangement, the coolant outlet of the third radiator 29 is communicated with the coolant inlet of the fifth water pump 28, the coolant outlet of the fifth water pump 28 is communicated with the coolant inlet of the front electronic control unit 31 and the coolant inlet of the rear electronic control unit 33, respectively, the coolant outlet of the front electronic control unit 31 is communicated with the coolant inlet of the DC-DC converter 34, the coolant outlet of the DC-DC converter 34 is communicated with the coolant inlet of the front motor 30, the coolant outlet of the rear electronic control unit 33 is communicated with the coolant inlet of the vehicle-mounted charger 35, the coolant outlet of the vehicle-mounted charger 35 is communicated with the coolant inlet of the rear motor 32, and the coolant outlet of the front motor 30 and the coolant outlet of the rear motor 32 are both communicated with the coolant inlet of the third radiator 29.
The motor cooling loop further comprises a third three-way valve 36, a first port O of the third three-way valve is communicated with an outlet of the motor cooling main circuit 400, a second port P of the third three-way valve is communicated with an inlet of the first motor cooling branch 401, and a second port Q of the third three-way valve is communicated with an inlet of the second motor cooling branch 402. Alternatively, in other embodiments, two on-off valves respectively disposed on the first motor cooling branch 401 and the second motor cooling branch 402 may be used instead of the third three-way valve 36.
In the third embodiment of the present disclosure, the condenser 17, the first radiator 3, the second radiator 25, and the third radiator 29 share one cooling fan 27, so as to reduce the number of components of the vehicle thermal management system.
The cycle process and principle of the vehicle thermal management system provided by the embodiment of the disclosure in different operation modes will be described in detail with reference to fig. 1. It should be understood that the cycle process and the principle in other embodiments (e.g., the embodiments shown in fig. 2 and 3) are similar to those in fig. 1, and thus are not described in detail herein.
The passenger compartment high-temperature heating working mode is characterized in that the passenger compartment heating requirement is low in the working mode, the heat of the engine 1 can meet the heating requirement of the passenger compartment, the third port F of the first three-way valve 11 is communicated with the second port G of the first three-way valve, the first port L of the second three-way valve 14 is communicated with the second port M of the second three-way valve, the heater 4 and the thermostat 7 are in a closed state, and the circulating loop of the cooling liquid is the engine 1, the second water pump 5, the heater 4, the warm air core body 6, the first three-way valve 11 and the engine 1. If the oil cooler 8 needs to be cooled, the first on-off valve 9 can be opened, so that the coolant flows through the oil cooler 8 under the action of the first water pump 2 in the engine 1, the heat of the oil cooler 8 is transferred to the engine 1, and the engine 1 transfers the heat to the warm air core body 6 to heat the passenger compartment. The working mode can use the waste heat generated by the engine 1 for heating the passenger compartment, and if the first on-off valve 9 is opened, the waste heat on the oil cooler 8 can be used for heating the passenger compartment, so that the energy utilization rate is improved, and the energy consumption is reduced.
Passenger cabin low temperature heating mode, passenger cabin heating demand is high under this mode, the heat of engine 1 can't satisfy the heating demand in passenger cabin, then first three-way valve first port E and first three-way valve third port F of first three-way valve 11 switch on, second three-way valve first port L and second three-way valve second port M of second three-way valve 14 switch on, heater 4 is in the on-state, the circulation circuit of coolant liquid is second water pump 5, heater 4, warm braw core 6, first three-way valve 11, second water pump 5.
And in the passenger compartment refrigeration working mode, an air-conditioning refrigeration loop is adopted to refrigerate the passenger compartment, the compressor 16 and the condenser 17 are started, and the refrigerant circulation loop comprises the compressor 16, the condenser 17, the second on-off valve 20, the thermal expansion valve 19, the evaporator 18 and the compressor 16.
The power battery high temperature heats the mode, power battery 12 heats the demand low under this mode, the heat of engine 1 can satisfy power battery 12 and heat the demand, then first three-way valve third port F and first three-way valve second port G of first three-way valve 11 switch on, the first port L of second three-way valve and the third port N of second three-way valve 14 switch on, heater 4, thermostat 7 is in the closed condition, the circulation circuit of coolant liquid is engine 1, second water pump 5, heater 4, first heat exchanger 10, first three-way valve 11, engine 1. The heat of the engine 1 can be used to heat the power cell 12 by means of the first heat exchanger 10.
The low-temperature heating working mode of the power battery is characterized in that the heating requirement of the power battery 12 is high in the low-temperature heating working mode, the heat of the engine 1 cannot meet the heating requirement of the power battery 12, the first port E of the first three-way valve 11 is communicated with the third port F of the first three-way valve, the first port L of the second three-way valve 14 is communicated with the third port N of the second three-way valve, the heater 4 is in an open state, and the circulation loop of the cooling liquid is composed of a second water pump 5, a heater 4, a first heat exchanger 10, a first three-way valve 11.
And in the power battery cooling working mode, an air-conditioning refrigeration loop is adopted to cool the power battery 12, the compressor 16 and the condenser 17 are started, and the refrigerant circulation loop comprises the compressor 16, the condenser 17, the electronic expansion valve 21, the second heat exchanger 15 and the compressor 16.
And in the engine cooling working mode, the first three-way valve first port E and the first three-way valve third port F of the first three-way valve 11 are communicated, the first on-off valve 9 is disconnected, the thermostat 7 is opened, and the cooling liquid circulation loop comprises the engine 1, the first radiator 3, the thermostat 7 and the engine 1.
Other embodiments of the present disclosure further include a front motor cooling operation mode, a rear motor cooling operation mode, an intercooler cooling operation mode, a turbine cooling operation mode, and various combinations of the foregoing operation modes, which are not described in detail herein. Therefore, the vehicle thermal management system provided by the embodiment of the disclosure can reasonably utilize the waste heat of the engine to respectively heat the passenger compartment or heat the power battery, can improve the utilization rate of the energy of the whole vehicle, and reduces the energy loss of the whole vehicle.
In addition, the fourth embodiment of the disclosure also provides a vehicle, which comprises the vehicle thermal management system.
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 the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.
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. The vehicle heat management system is characterized by comprising an engine cooling loop, an air-conditioning heating loop and a fluid switching device, wherein an engine (1), a first water pump (2) and a first radiator (3) are arranged on the engine cooling loop, a heater (4), a second water pump (5) and a warm air core body (6) are arranged on the air-conditioning heating loop, the engine cooling loop and the air-conditioning heating loop are connected through the fluid switching device, and the fluid switching device is used for controlling the engine cooling loop and the air-conditioning heating loop to be selectively independent from each other or in fluid communication.
2. The vehicle thermal management system according to claim 1, characterized in that the fluid switching device is a first three-way valve (11), a first port (E) of the first three-way valve (11) being in communication with the engine coolant circuit and the air conditioning heating circuit, respectively, a second port (G) of the first three-way valve (11) being in communication with the engine coolant circuit, a third port (F) of the first three-way valve (11) being in communication with the air conditioning heating circuit,
when the first port (E) and the third port (F) of the first three-way valve (11) are communicated and the first port (E) and the third port (F) are disconnected with the second port (G), the engine cooling loop and the air-conditioning heating loop are mutually independent;
when the second port (G) of the first three-way valve (11) is in communication with the third port (F) and both the second port (G) and the third port (F) are disconnected from the first port (E), the engine cooling circuit and the air conditioning heating circuit are in fluid communication.
3. The vehicle thermal management system according to claim 2, characterized in that the engine cooling circuit comprises an engine cooling trunk (100), a first engine cooling branch (101) and a second engine cooling branch (102), the engine (1) and the first water pump (2) being arranged on the engine cooling trunk (100), the first radiator (3) and the thermostat (7) being arranged on the first engine cooling branch (101), the oil cooler (8) and the first on-off valve (9) being arranged on the second engine cooling branch (102),
an outlet of the engine cooling trunk (100) communicates with a first port (E) of the first three-way valve (11), and an inlet of the engine cooling trunk (100) communicates with a second port (G) of the first three-way valve (11).
4. The vehicle thermal management system according to claim 2, wherein the air-conditioning heating loop comprises an air-conditioning heating main line (200), a first air-conditioning heating branch line (201) and a second air-conditioning heating branch line (202), the second water pump (5) and the heater (4) are arranged on the air-conditioning heating main line (200), the warm air core body (6) is arranged on the first air-conditioning heating branch line (201), the first heat exchanger (10) is arranged on the second air-conditioning heating branch line (202), the vehicle thermal management system further comprises a power battery thermal management loop, and the power battery thermal management loop and the air-conditioning heating loop exchange heat through the first heat exchanger (10),
an inlet of the air-conditioning heating main line (200) is communicated with a first port (E) of the first three-way valve (11), and an outlet of the first air-conditioning heating branch line (201) and an outlet of the second air-conditioning heating branch line (202) are communicated with a third port (F) of the first three-way valve (11).
5. The vehicle thermal management system according to claim 1, wherein the fluid switching device is a four-way valve (22), a first port (I) and a second port (K) of the four-way valve (22) are respectively in communication with the engine coolant circuit, a third port (J) and a fourth port (H) of the four-way valve (22) are respectively in communication with the air conditioning heating circuit,
when a first port (I) and a second port (K) of the four-way valve (22) are conducted, and a third port (J) and a fourth port (H) of the four-way valve (22) are conducted, the engine cooling circuit and the air-conditioning heating circuit are independent of each other;
the engine cooling circuit and the air conditioning heating circuit are in fluid communication when a first port (I) of the four-way valve (22) is in communication with a fourth port (H) and a second port (K) of the four-way valve (22) is in communication with a third port (J).
6. The vehicle thermal management system according to claim 5, characterized in that the engine cooling circuit comprises an engine cooling trunk (100), a first engine cooling branch (101) and a second engine cooling branch (102), the engine (1) and the first water pump (2) being arranged on the engine cooling trunk (100), the first radiator (3) and the thermostat (7) being arranged on the first engine cooling branch (101), the oil cooler (8) and the first on-off valve (9) being arranged on the second engine cooling branch (102),
the outlet of the engine cooling main line (100) is communicated with a first port (I) of the four-way valve (22), and the inlet of the engine cooling main line (100) is communicated with a second port (K) of the four-way valve (22).
7. The vehicle thermal management system according to claim 5, wherein the air-conditioning heating loop comprises an air-conditioning heating main line (200), a first air-conditioning heating branch line (201) and a second air-conditioning heating branch line (202), the second water pump (5) and the heater (4) are arranged on the air-conditioning heating main line (200), the warm air core body (6) is arranged on the first air-conditioning heating branch line (201), the first heat exchanger (10) is arranged on the second air-conditioning heating branch line (202), the vehicle thermal management system further comprises a power battery thermal management loop, and the power battery thermal management loop and the air-conditioning heating loop exchange heat through the first heat exchanger (10),
an inlet of the air-conditioning heating main line (200) is communicated with a fourth port (H) of the four-way valve (22), and an outlet of the first air-conditioning heating branch (201) and an outlet of the second air-conditioning heating branch (202) are both communicated with a third port (J) of the four-way valve (22).
8. The vehicle thermal management system according to claim 4 or 7, characterized in that it further comprises a second three-way valve (14), the outlet of the air-conditioning heating main (200) being in communication with a first port (L) of the second three-way valve (14), the outlet of the first air-conditioning heating branch (201) being in communication with a second port (M) of the second three-way valve (14), the inlet of the second air-conditioning heating branch (202) being in communication with a third port (N) of the second three-way valve (14).
9. The vehicle thermal management system according to claim 4 or 7, further comprising an air conditioning refrigeration circuit and a second heat exchanger (15), the power battery thermal management circuit and the air conditioning refrigeration circuit exchanging heat via the second heat exchanger (15).
10. A vehicle, characterized in that the vehicle comprises a vehicle thermal management system according to claims 1-9.
CN201811457727.7A 2018-11-30 2018-11-30 Vehicle thermal management system and vehicle Pending CN111251800A (en)

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Application publication date: 20200609