CN113954697B - Fuel cell auxiliary system and battery thermal management integrated system and control method thereof - Google Patents
Fuel cell auxiliary system and battery thermal management integrated system and control method thereof Download PDFInfo
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- CN113954697B CN113954697B CN202111410375.1A CN202111410375A CN113954697B CN 113954697 B CN113954697 B CN 113954697B CN 202111410375 A CN202111410375 A CN 202111410375A CN 113954697 B CN113954697 B CN 113954697B
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- way valve
- air
- battery
- heat pump
- water
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- 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
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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
- B60H1/00271—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
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- 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
-
- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/545—Temperature
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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
Abstract
The application relates to the technical field of fuel cell thermal management integration, in particular to a fuel cell auxiliary system, a battery thermal management integration system and a control method thereof. A fuel cell auxiliary system and battery thermal management integrated system comprising: the heat pump cooling system comprises a first circulation loop formed by sequentially connecting a water storage kettle, a water pump, a battery cooler, a range-extending battery, a water-cooling condenser, a pile auxiliary cooling piece and a heat dissipation unit in series, and a second circulation loop formed by sequentially connecting an air conditioner compressor pump, a heat pump heater and a heat pump evaporator in series, wherein the heat pump heater is connected with the heat dissipation unit in parallel, a first three-way valve is arranged on the first circulation loop and is respectively connected and communicated with the pile auxiliary cooling piece, the heat dissipation unit and the heat pump heater, and a second three-way valve is arranged on the second circulation loop and is respectively connected and communicated with the air conditioner compressor pump, the heat pump heater and the water-cooling condenser.
Description
Technical Field
The application relates to the technical field of fuel cell thermal management integration, in particular to a fuel cell auxiliary system, a battery thermal management integration system and a control method thereof.
Background
The hydrogen fuel cell system is used as a power generation device, is mainly used for being mounted on high-load vehicles such as trucks and trucks at present in the vehicle-mounted field, but because of the technical limitation at present, if the fuel cell is directly used for driving a power motor of an automobile, the power requirement on a galvanic pile is extremely high under the power working condition such as high-load climbing, the maximum power of the current fuel cell is difficult to meet the highest requirement, and meanwhile, the maximum power is influenced by a matching technology and the like. At present, a method of independent or partially independent operation of a pile cooling, auxiliary cooling, a range-extending battery and an air conditioner is generally adopted, but the mode has more parts and higher cost, and meanwhile, due to more cooling modules, obvious noise, higher fault rate and high space requirement.
Disclosure of Invention
In view of this, the present application provides a fuel cell auxiliary system and a battery thermal management integrated system and a control method thereof.
The application provides a fuel cell auxiliary system and a battery thermal management integrated system, comprising: the heat pump evaporator is connected in parallel with the battery cooler and the water-cooling condenser in a loop through a third three-way valve, and is arranged in a heating, ventilation and air conditioning assembly.
Further, the electric pile auxiliary cooling piece comprises an intercooler, a DCDC and an air compressor assembly, wherein the DCDC and the air compressor assembly are connected in series between the water-cooled condenser and the first three-way valve, and the intercooler is connected in parallel with the DCDC and the air compressor assembly.
Further, the heat dissipation unit is a radiator, and a heat dissipation fan is arranged on one side of the heat dissipation unit.
Further, the heating ventilation air conditioning assembly comprises an air conditioner blower, the heat pump evaporator, a cold air duct, a fourth three-way valve, a warm air core body, a warm air duct and a wind direction switching unit, wherein the air conditioner blower is arranged on one side of the heat pump evaporator, the heat pump evaporator is connected with the warm air core body in series, the fourth three-way valve is arranged at an outlet of the cold air duct, and the wind direction switching unit is arranged at the outlets of the cold air duct and the warm air duct and is used for switching the conveying direction of air.
Further, the fourth three-way valve is a proportional control three-way valve.
Further, the third three-way valve is a proportional control three-way valve.
An automobile comprises the fuel cell auxiliary system and the battery thermal management integrated system, wherein the fuel cell auxiliary system and the battery thermal management integrated system are connected with an automobile body.
The fuel cell auxiliary system and the battery thermal management integrated system comprise the following steps:
s1, monitoring the working temperature of a range-extending battery and an air conditioning request;
s2, when the extended-range battery needs to be heated, and the air conditioner request is one of refrigeration, heating, natural wind circulation or no request, starting a circulating water pump, a battery cooler, a water-cooled condenser, a pile auxiliary cooling piece and a heat pump heater, wherein the first three-way valve is communicated with the pile auxiliary cooling piece and the heat pump heater, and the second three-way valve is regulated so that cooling liquid sequentially passes through the battery cooler, the extended-range battery, the water-cooled condenser, the pile auxiliary cooling piece, the first three-way valve, the heat pump heater and the circulating water pump, and a refrigerant sequentially passes through an air conditioner compressor pump, the second three-way valve, the heat pump heater, the heat pump evaporator and the air conditioner compressor pump;
s3, when the range-extending battery needs to be cooled, and the air conditioner request is one of refrigeration, heating, natural wind circulation or no request, starting a circulating water pump, a battery cooler, a water-cooling condenser, a pile auxiliary cooling piece, a radiating unit, an air-conditioning compressor pump and a heat pump evaporator, enabling a first three-way valve to be communicated with the pile auxiliary cooling piece and the radiating unit, enabling a second three-way valve to be communicated with the air-conditioning compressor pump and the water-cooling condenser, adjusting a third three-way valve, controlling the proportion of refrigerant entering the heat pump evaporator and the battery cooler respectively, enabling cooling liquid to sequentially pass through the battery cooler, the range-extending battery, the water-cooling condenser, the pile auxiliary cooling piece, the first three-way valve, the radiating unit and the water pump, enabling the refrigerant to sequentially pass through the air-conditioning compressor pump, the second three-way valve, the water-cooling condenser and the third three-way valve, then enter the battery cooler and the heat pump evaporator respectively according to proportion, and then enter the air-conditioning compressor pump.
Further, in S3, when the extended-range battery needs to be cooled, and when the air conditioner requests refrigeration, the cooling liquid sequentially passes through the battery cooler, the extended-range battery, the water-cooled condenser, the electric pile auxiliary cooling piece, the first three-way valve, the heat dissipation unit and the water pump, and the refrigerant sequentially passes through the air conditioner compressor pump, the second three-way valve, the water-cooled condenser and the third three-way valve, and then proportionally enters the battery cooler and the heat pump evaporator respectively, and then enters the air conditioner compressor pump;
when the range-extending battery needs to be cooled, and the air conditioner request is refrigeration, the third three-way valve is regulated, and the refrigerant is controlled to directly enter the battery cooler, so that the cooling liquid sequentially passes through the battery cooler, the range-extending battery, the water-cooling condenser, the electric pile auxiliary cooling piece, the first three-way valve, the heat radiating unit and the water pump, and the refrigerant sequentially passes through the air conditioner compressor pump, the second three-way valve, the water-cooling condenser, the third three-way valve, the battery cooler and the air conditioner compressor pump.
The technical scheme provided by the application has the beneficial effects that: the fuel cell auxiliary system and the battery thermal management integrated system realize the heating or cooling effect of the whole system by integrating the heat pump heater and the water cooling suspicious device, realize the heat absorption from the low-temperature environment and the heat release from the high-temperature environment under the condition of consuming very little energy by the heat pump principle, greatly improve the utilization rate of energy, save 2-3 times of electric energy loss compared with the heating by a PTC heating method. And through this integrated structure, improve the integrated level of system, reduced part quantity and volume, also have certain advantage in cost control direction.
Drawings
FIG. 1 is a schematic diagram of a fuel cell auxiliary system and a thermal management integrated system for a battery according to the present application;
FIG. 2 is a schematic view of the structure of the heating ventilation air conditioning assembly of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be further described with reference to the accompanying drawings.
Referring to fig. 1-2, an embodiment of the present application provides a fuel cell auxiliary system and a battery thermal management integrated system, comprising: the solar energy heat pump cooling system comprises a water storage kettle (1), a water pump (2), a battery cooler (3), a range-extending battery (4), a water-cooling condenser (5), a pile auxiliary cooling piece and a heat radiating unit, wherein the first circulation loop is formed by sequentially connecting the water storage kettle (3), the water pump (2), the water-cooling condenser (5), the pile auxiliary cooling piece and the heat radiating unit in series, the second circulation loop is formed by sequentially connecting an air-conditioning compressor pump (13), a heat pump heater (11) and a heat pump evaporator (14) in series, the heat pump heater (11) is connected with the heat radiating unit in parallel, a first three-way valve (9) is arranged on the first circulation loop, the first three-way valve (9) is respectively connected and communicated with the pile auxiliary cooling piece, the heat radiating unit and the heat pump heater (11), a second three-way valve (12) is arranged on the second circulation loop, the second three-way valve (12) is respectively connected and communicated with the air-conditioning compressor pump (13), the heat pump heater (11) and the water-cooling condenser (5), and the heat pump evaporator (14) are connected in parallel through a third three-way valve (15) to be connected with the heat pump evaporator (5).
In the application, the first circulation loop is a circulation loop of cooling liquid, the second circulation loop is a circulation loop of cooling medium, and under the action of the first three-way valve (9), the second three-way valve (12) and the third three-way valve (15), the circulation paths of the cooling liquid and the cooling medium are changed, so that the extended-range battery 4 is assisted to complete cooling and heating operations. According to the application, the heat pump heater (11) and the water-cooling condenser (5) are arranged, and the control of different loops is realized through the three-way valve, so that the heating or cooling work of the heat pump system on the range-extending battery 4 under different working conditions is realized. It should be noted that, in the application, the water storage kettle (1), the water pump (2), the battery cooler (3), the range extending battery (4), the water cooling condenser (5), the air conditioning compressor pump (13), the heat pump heater (11), the heat pump evaporator (14), the first three-way valve (9), the second three-way valve (12) and the third three-way valve (15) are all of the existing structure, wherein the water storage kettle (1) is used for storing cooling liquid, the battery cooler (3) is used for cooling effect of the range extending battery, the range extending battery (4) is used for increasing endurance of the whole vehicle, the water cooling condenser (5) is used for radiating when the heat pump system is used for refrigerating, the air conditioning compressor pump (13) is used for pumping refrigerant, the heat pump heater (11) is used for heating the cooling liquid (simultaneously for cooling the refrigerant), the heat pump evaporator (simultaneously is used for air conditioning circulation heat exchange), the first three-way valve (9) and the third three-way valve (15) are used for controlling the connection and disconnection of pipelines so as to achieve the purpose of changing the circulation path of the cooling liquid or the refrigerant, the second three-way valve (12) is a proportional control three-way valve and controls the three-way valve to enter the evaporator (14) and the heat pump evaporator (14) to be used for cooling liquid and the refrigerant in the cooling part of the cooling system and the cooling system to be widely applied to the structure of the application.
In the above embodiment, the pile auxiliary cooling member comprises an intercooler (6), a DCDC (7) and an air compressor assembly (8), wherein the DCDC (7) and the air compressor assembly (8) are connected in series between the water-cooled condenser (5) and the first three-way valve (9), and the intercooler (6) is connected in parallel with the DCDC (7) and the air compressor assembly (8).
In the application, the intercooler (6), the DCDC (7) and the air compressor assembly (8) are in the prior art and are used as auxiliary systems of the fuel cell reactor system together, and the structure and the operation of the intercooler, the DCDC (7) and the air compressor assembly are not repeated. The air compressor assembly (8) comprises an air compressor and an air compressor controller which are integrally arranged.
In the above embodiment, the heat dissipation unit is a heat sink (10), and a heat dissipation fan (11) is disposed on one side of the heat dissipation unit.
In the application, the combination of the radiator (10) and the cooling fan (11) can achieve the purpose of improving the cooling effect and efficiency of cooling liquid.
In the above embodiment, the heating ventilation air conditioning assembly comprises an air conditioning blower (16), a heat pump evaporator (14), a cold air duct, a fourth three-way valve (17), a warm air core (18), a warm air duct and a wind direction switching unit (19), wherein the air conditioning blower (16) is arranged on one side of the heat pump evaporator (14), the heat pump evaporator (14) and the warm air core (18) are connected in series, the fourth three-way valve (17) is arranged at an outlet of the cold air duct, and the wind direction switching unit (19) is arranged at an outlet of the cold air duct and an outlet of the warm air duct and is used for switching the conveying direction of air.
In the application, the air conditioner blower (16) can realize heat exchange of the heat pump evaporator (14) and also can be used as a source of air conditioner wind. The fourth three-way valve (17) is a proportional control three-way valve and is used for controlling the flow of the cooled air passing through the warm air core (18) so as to achieve the purpose of adjusting the temperature of the air entering the passenger cabin (20). The wind direction switching unit (19) is used for realizing switching of a flow path of air-conditioning wind, when the air-conditioning wind channel is selected or the warm wind channel is communicated with the passenger cabin (20), the cooled or heated air-conditioning wind can be conveyed into the passenger cabin (20), when the air-conditioning wind channel is selected or the warm wind channel is connected with a required requirement through an air pipe, and the air-conditioning wind is directly discharged into the vehicle (20) or the air pipe (21) so as to meet different requirements. In the application, the structure of the heating ventilation air-conditioning assembly is the prior art, the wind direction switching unit (19) is used for controlling the trend of air-conditioning wind, and the structure of the air-conditioning assembly on the existing automobile can realize the function of the heating ventilation air-conditioning assembly, so that the specific structure and the working principle of the heating ventilation air-conditioning assembly are not repeated.
The fuel cell auxiliary system and the battery thermal management integrated system of the application:
1. the cooling liquid sequentially enters a battery cooler (3), a range-extending battery (4) and a water-cooling condenser (5) after passing through a water pump (2), then enters a galvanic pile auxiliary cooling piece, and then enters a heat pump heater (11) or a radiator (10) under the control of a first three-way valve (9);
2. after being heated by an air conditioner compressor pump (13), the refrigerant is selected by a second three-way valve (12), enters a heat pump heater (11) when the range-extending battery 4 needs to be heated, and enters a water-cooling condenser (5) when the range-extending battery 4 needs to be cooled;
3. after passing through the water-cooling condenser (5) or the heat pump heater (11), the refrigerant is regulated through the first three-way valve (9) so that the refrigerant enters the battery cooler (3) or the heat pump heater (11).
The fuel cell auxiliary system and the battery thermal management integrated system realize the heating or cooling effect of the whole system by integrating the heat pump heater and the water cooling suspicious device, realize the heat absorption from the low-temperature environment and the heat release from the high-temperature environment under the condition of consuming very little energy by the heat pump principle, greatly improve the utilization rate of energy, save 2-3 times of electric energy loss compared with the heating by a PTC heating method. And through this integrated structure, improve the integrated level of system, reduced part quantity and volume, also have certain advantage in cost control direction.
An automobile includes a fuel cell auxiliary system and a battery thermal management integrated system coupled to a body of the automobile.
The application relates to a control method of a fuel cell auxiliary system and a battery thermal management integrated system, which comprises the following steps:
s1, monitoring the working temperature of a battery and an air conditioner request at the same time;
s2, when the working temperature of the extended-range battery 4 is lower than 15 ℃, the extended-range battery 4 is required to be heated, and when a refrigerating request is sent by an air conditioner, a circulating water pump (2), a battery cooler (3), a water-cooled condenser (5), a pile auxiliary cooling piece, an air-conditioner compressor pump (13), a heat pump heater (11), a heat pump evaporator (14) and an air-conditioner blower (16) are started, a first three-way valve (9) is communicated with the pile auxiliary cooling piece and the heat pump heater (11), a second three-way valve (12) is communicated with the air-conditioner compressor pump (13) and the heat pump heater (11), a wind direction switching unit (19) is communicated with a cold wind channel and a passenger cabin (20), and cooling liquid sequentially flows through the battery cooler (3), the extended-range battery (4), the water-cooled condenser (5), the intercooler (6), the DCDC (7), the air compressor and the controller (8), and the first three-way valve (9), and the heat pump heater (11) and then return into the water pump (2); simultaneously, the refrigerant sequentially passes through the air conditioner compressor pump (13), the second three-way valve (12), the heat pump heater (11), the heat pump evaporator (14) and then returns to the air conditioner compressor pump (13); after the air conditioner blower (16) is started, air is blown out of the heat pump evaporator (14) for cooling treatment, and then directly enters the passenger cabin (20) through the cold air duct;
s21, when the working temperature of the extended-range battery 4 is lower than 15 ℃, the extended-range battery 4 is required to be heated, when an air conditioner has a heating request, a circulating water pump (2), a battery cooler (3), a water-cooling condenser (5), a pile auxiliary cooling piece, an air-conditioning compressor pump (13), a heat pump heater (11), a heat pump evaporator (14) and an air-conditioning blower (16) are started, a first three-way valve (9) is communicated with the pile auxiliary cooling piece and the heat pump heater (11), a second three-way valve (12) is communicated with the air-conditioning compressor pump (13) and the heat pump heater (11), the opening of a fourth three-way valve (17) is regulated, so that air is completely passed through a warm air core (18), a wind direction switching unit (19) is communicated with a warm air duct and a passenger cabin (20), and cooling liquid is sequentially passed through the battery cooler (3), the extended-range battery (4), the water-cooling condenser (5), the DCDC (7), the air compressor and the controller (8) are communicated with the first three-way valve (9), and the water pump heater (11), and then returned into the water pump (2); simultaneously, the refrigerant sequentially passes through the air conditioner compressor pump (13), the second three-way valve (12), the heat pump heater (11), the heat pump evaporator (14) and then returns to the air conditioner compressor pump (13); the air conditioner blower (16) is started, and all air is sequentially blown through the heat pump evaporator (14) and the warm air core (18) for treatment and then enters the passenger cabin (20) through the warm air duct;
s22, when the working temperature of the extended-range battery 4 is lower than 15 ℃, the extended-range battery 4 is required to be heated, when an air conditioner is set to be natural air circulation, a circulating water pump (2), a battery cooler (3), a water-cooled condenser (5), a pile auxiliary cooling piece, an air-conditioner compressor pump (13), a heat pump heater (11), a heat pump evaporator (14) and an air-conditioner blower (16) are started, a first three-way valve (9) is communicated with the pile auxiliary cooling piece and the heat pump heater (11), a second three-way valve (12) is communicated with the air-conditioner compressor pump (13) and the heat pump heater (11), the opening degree of a fourth three-way valve (17) is regulated, an air direction switching unit (19) is communicated with a cold air duct, a warm air duct and a passenger cabin (20), and cooling liquid sequentially passes through the battery cooler (3), the extended-range battery (4), the water-cooled condenser (5), an intercooler (6), a DCDC (7), an air compressor and a controller (8), and the first three-way valve (9) are returned into the water pump (2); simultaneously, the refrigerant sequentially passes through the air conditioner compressor pump (13), the second three-way valve (12), the heat pump heater (11), the heat pump evaporator (14) and then returns to the air conditioner compressor pump (13); after the air blower (16) is started and the air is blown by the heat pump evaporator (14), the air is divided into two moving paths under the action of the fourth three-way valve (17), part of the air directly enters the cold air duct, part of the air passes through the warm air core (18) to perform warm air duct, and after the merging temperature of the cold air and the warm air is neutralized, the air is directly conveyed into the passenger cabin (20).
S23, when the working temperature of the extended-range battery 4 is lower than 15 ℃, the extended-range battery 4 is required to be heated, and when an air conditioner is not required to be started, a circulating water pump (2), a battery cooler (3), a water-cooled condenser (5), a pile auxiliary cooling piece, an air-conditioner compressor pump (13), a heat pump heater (11), a heat pump evaporator (14) and an air-conditioner blower (16) are started, a first three-way valve (9) is communicated with the pile auxiliary cooling piece and the heat pump heater (11), a second three-way valve (12) is communicated with the air-conditioner compressor pump (13) and the heat pump heater (11), the opening of a fourth three-way valve (17) is regulated, a wind direction switching unit (19) is communicated with a cold wind channel, a warm wind channel and a wind pipe (21), and cooling liquid sequentially passes through the battery cooler (3) →the extended-range battery (4) →the water-cooled condenser (5) → (an intercooler (6), a DCDC (7) →an air compressor and a controller (8) →the first three-way valve (9) →the heat pump heater (11), and then returns into the water pump (2); simultaneously, the refrigerant sequentially passes through the air conditioner compressor pump (13), the second three-way valve (12), the heat pump heater (11), the heat pump evaporator (14) and then returns to the air conditioner compressor pump (13); after the air blower (16) is started and the air is blown by the heat pump evaporator (14), the air is divided into two moving paths under the action of the fourth three-way valve (17), part of the air directly enters the cold air duct, part of the air passes through the warm air core (18) to perform warm air duct, and after the cold air and the warm air are converged, the air is directly conveyed to the air duct (21) and discharged outside the vehicle.
S3, when the working temperature of the extended-range battery 4 is higher than 25 ℃, the extended-range battery 4 is required to be cooled, and when a refrigerating request is sent by an air conditioner, a circulating water pump (2), a battery cooler (3), a water-cooling condenser (5), a pile auxiliary cooling piece, an air-conditioning compressor pump (13), a heat pump heater (11), a radiator (10), a cooling fan (11) and an air-conditioning blower (16) are started, a first three-way valve (9) is communicated with the pile auxiliary cooling piece and the radiator (10), a second three-way valve (12) is communicated with the air-conditioning compressor pump (13) and the water-cooling condenser (5), a third three-way valve (15) is regulated, the proportion of refrigerant entering the heat pump evaporator (14) and the battery cooler (3) respectively is controlled, the opening of a fourth three-way valve (17) is regulated, so that air does not pass through a warm air core (18), a wind direction switching unit (19) is communicated with cold wind channel and a passenger cabin (20), and cooling liquid passes through the battery cooler (3), the extended-range battery (4), the water-cooling condenser (5), the DCDC (7) and the controller (8) are sequentially returned into the air pump (2); simultaneously, the refrigerant sequentially passes through the air conditioner compressor pump (13), the second three-way valve (12), the water-cooled condenser (5), the third three-way valve (15) and the battery cooler (3) and the heat pump evaporator (14) according to the proportion, and then returns to the air conditioner compressor pump (13); the air conditioner blower (16) is started, and air is blown out of the heat pump evaporator (14) and then directly enters the passenger cabin (20) through the cold air duct.
S31, when the working temperature of the extended-range battery 4 is higher than 25 ℃, the extended-range battery 4 is required to be cooled, and when an air conditioner has a heating request, a circulating water pump (2), a battery cooler (3), a water-cooling condenser (5), a pile auxiliary cooling piece, an air-conditioning compressor pump (13), a heat pump heater (11), a radiator (10), a cooling fan (11) and an air-conditioning blower (16), a first three-way valve (9) are communicated with the pile auxiliary cooling piece and the radiator (10), a second three-way valve (12) is communicated with the air-conditioning compressor pump (13) and the water-cooling condenser (5), a third three-way valve (15) is regulated, a refrigerant is controlled to directly enter the battery cooler (3), the opening of a fourth three-way valve (17) is regulated, so that air completely passes through the warm air core (18), a wind direction switching unit (19) is communicated with the warm air core (18) and a passenger cabin (20), and cooling liquid sequentially passes through the battery cooler (3) →the extended-range battery (4) →the water-cooling condenser (5) →the intercooler (6), DCDC (7) →8) and the controller (9) are returned into the water pump (2); simultaneously, the refrigerant sequentially passes through the air conditioner compressor pump (13), the second three-way valve (12), the water-cooled condenser (5), the third three-way valve (15) and the battery cooler (3) and then returns to the air conditioner compressor pump (13); the air conditioner blower (16) is started, and all air is sequentially blown through the heat pump evaporator (14) and the warm air core (18) for treatment and then enters the passenger cabin (20) through the warm air duct;
s32, when the working temperature of the extended-range battery 4 is higher than 25 ℃, the extended-range battery 4 is required to be cooled, when an air conditioner is set to be in natural air circulation, a circulating water pump (2), a battery cooler (3), a water-cooling condenser (5), a stack auxiliary cooling piece, an air-conditioning compressor pump (13), a heat pump heater (11), a radiator (10), a cooling fan (11) and an air-conditioning blower (16), a first three-way valve (9) is communicated with the stack auxiliary cooling piece and the radiator (10), a second three-way valve (12) is communicated with the air-conditioning compressor pump (13) and the water-cooling condenser (5), a third three-way valve (15) is regulated, a refrigerant is controlled to directly enter the battery cooler (3), the opening of a fourth three-way valve (17) is regulated, the proportion of air passing through a warm air core (18) is controlled, a wind direction switching unit (19) is communicated with a cold wind channel, a warm air and a passenger cabin (20), and cooling liquid sequentially passes through the battery cooler (3), the extended-range battery (4), the water-cooling condenser (5), the DCDC (7) and the controller (8) are returned into the three-way valve (9); simultaneously, the refrigerant sequentially passes through the air conditioner compressor pump (13), the second three-way valve (12), the water-cooled condenser (5), the third three-way valve (15) and the battery cooler (3) and then returns to the air conditioner compressor pump (13); after the air blower (16) is started and the air is blown by the heat pump evaporator (14), the air is divided into two moving paths under the action of the fourth three-way valve (17), part of the air directly enters the cold air duct, part of the air passes through the warm air core (18) to carry out the warm air duct, and after the cold air and the warm air are converged, the air is directly conveyed into the passenger cabin (20).
S33, when the working temperature of the extended-range battery 4 is higher than 25 ℃, the extended-range battery 4 is required to be cooled, and when an air conditioner is not required to be started, a circulating water pump (2), a battery cooler (3), a water-cooled condenser (5), a pile auxiliary cooling piece, an air-conditioner compressor pump (13), a heat pump heater (11), a radiator (10), a cooling fan (11) and an air-conditioner blower (16) are started, a first three-way valve (9) is communicated with the pile auxiliary cooling piece and the radiator (10), a second three-way valve (12) is communicated with the air-conditioner compressor pump (13) and the water-cooled condenser (5), the opening of a third three-way valve (15) is regulated, a refrigerant is controlled to directly enter the battery cooler (3), the opening of a fourth three-way valve (17) is regulated, the proportion of air passing through a warm air core (18) is controlled, a wind direction switching unit (19) is communicated with a cold wind channel, a warm wind channel and a wind channel (21), and cooling liquid sequentially passes through the battery cooler (3), the extended-range battery (4), the water-cooled condenser (5), the DCDC (7) and the controller (8) are returned into the air pump (2); simultaneously, the refrigerant sequentially passes through the air conditioner compressor pump (13), the second three-way valve (12), the water-cooled condenser (5), the third three-way valve (15) and the battery cooler (3) and then returns to the air conditioner compressor pump (13); after the air blower (16) is started and the air is blown by the heat pump evaporator (14), the air is divided into two moving paths under the action of the fourth three-way valve (17), part of the air directly enters the cold air duct, part of the air passes through the warm air core (18) to perform warm air duct, and after the cold air and the warm air are converged, the air is directly conveyed to the air duct (21).
According to the control method, under the scheme of the system architecture based on the current application, the control method and the framework are combined with each other, so that the heating or cooling effect on the extended-range battery is realized, the energy utilization rate is greatly improved, the working temperature of the extended-range battery can be accurately controlled, and other parts such as DCDC, an air compressor and a controller thereof can be enabled to work in a required working interval temperature range.
In this document, terms such as front, rear, upper, lower, etc. are defined with respect to the positions of the components in the drawings and with respect to each other, for clarity and convenience in expressing the technical solution. It should be understood that the use of such orientation terms should not limit the scope of the claimed application.
The embodiments described above and features of the embodiments herein may be combined with each other without conflict.
The foregoing description of the preferred embodiments of the application is not intended to limit the application to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the application are intended to be included within the scope of the application.
Claims (8)
1. The control method of the fuel cell auxiliary system and the battery thermal management integrated system is characterized by being executed by the fuel cell auxiliary system and the battery thermal management integrated system, wherein the fuel cell auxiliary system and the battery thermal management integrated system comprise a water storage kettle (1), a water pump (2), a battery cooler (3), a range-extending battery (4), a water-cooling condenser (5), a pile auxiliary cooling piece and a heat dissipation unit which are sequentially connected in series to form a first circulation loop, a second circulation loop is formed by sequentially connecting an air-conditioning compressor pump (13), a heat pump heater (11) and a heat pump evaporator (14) in series, the heat pump heater (11) is connected with the heat dissipation unit in parallel, a first three-way valve (9) is arranged on the first circulation loop and is respectively connected and communicated with the pile auxiliary cooling piece, the heat dissipation unit and the heat pump heater (11), a second three-way valve (12) is arranged on the second circulation loop, the second three-way valve (12) is respectively connected with the air-conditioning compressor pump (13), the heat pump heater (11) and the water-cooling piece (5) and the heat pump evaporator (14) in parallel, and the heat pump heater (14) is connected with the heat pump heater (11) in parallel through the heat pump heater (14);
the method comprises the following steps:
s1, monitoring the working temperature of a range-extending battery (4) and an air conditioning request;
s2, when the range-extending battery (4) needs to be heated, and an air conditioner request is one of refrigeration, heating, natural wind circulation or no request, starting a circulating water pump (2), a battery cooler (3), a water-cooling condenser (5), a pile auxiliary cooling piece and a heat pump heater (11), wherein a first three-way valve (9) is communicated with the pile auxiliary cooling piece and the heat pump heater (11), and a second three-way valve (12) is regulated, so that cooling liquid sequentially passes through the battery cooler (3), the range-extending battery (4), the water-cooling condenser (5), the pile auxiliary cooling piece, the first three-way valve (9), the heat pump heater (11) and the circulating water pump (2), and a refrigerant sequentially passes through an air conditioner compressor pump (13), a second three-way valve (12), the heat pump heater (11), a heat pump evaporator (14) and the air conditioner compressor pump (13);
s3, when the range-extending battery (4) needs to be cooled, and the air conditioner request is one of refrigeration, heating, natural wind circulation or no request, a circulating water pump (2), a battery cooler (3), a water-cooling condenser (5), a pile auxiliary cooling piece, a heat radiating unit, an air-conditioning compressor pump (13) and a heat pump evaporator (14), a first three-way valve (9) is communicated with the pile auxiliary cooling piece and the heat radiating unit, a second three-way valve (12) is communicated with the air-conditioning compressor pump (13) and the water-cooling condenser (5), a third three-way valve (15) is regulated, and the proportion of refrigerant entering the heat pump evaporator (14) and the battery cooler (3) respectively is controlled, so that the cooling liquid sequentially passes through the battery cooler (3), the range-extending battery (4), the water-cooling condenser (5), the pile auxiliary cooling piece, the first three-way valve (9), the heat radiating unit and the water pump (2), and the refrigerant sequentially pass through the air-conditioning compressor pump (13), the second three-way valve (12), the water-cooling condenser (5) and the third three-way valve (15) and enter the battery cooler (3) respectively according to the proportion, and enter the heat pump (13).
2. The control method of the fuel cell auxiliary system and the battery thermal management integrated system according to claim 1, wherein in S3, when the range-extending battery (4) needs to be cooled and the air conditioner request is refrigeration, the cooling liquid sequentially passes through the battery cooler (3), the range-extending battery (4), the water-cooled condenser (5), the electric pile auxiliary cooling piece, the first three-way valve (9), the heat radiating unit and the water pump (2), and the refrigerant sequentially passes through the air conditioner compressor pump (13), the second three-way valve (12), the water-cooled condenser (5) and the third three-way valve (15) and then respectively enters the battery cooler (3) and the heat pump evaporator (14) according to a proportion, and then enters the air conditioner compressor pump (13);
when the range-extending battery (4) needs to be cooled, and the air conditioner request is refrigeration, the third three-way valve (15) is adjusted, and the refrigerant is controlled to directly enter the battery cooler (3), so that the cooling liquid sequentially passes through the battery cooler (3), the range-extending battery (4), the water-cooling condenser (5), the electric pile auxiliary cooling piece, the first three-way valve (9), the heat radiating unit and the water pump (2), and the refrigerant sequentially passes through the air conditioner compressor pump (13), the second three-way valve (12), the water-cooling condenser (5), the third three-way valve (15), the battery cooler (3) and the air conditioner compressor pump (13).
3. The control method of a fuel cell auxiliary system and a battery thermal management integrated system according to claim 1, wherein the electric pile auxiliary cooling member comprises an intercooler (6), a DCDC (7) and an air compressor assembly (8), the DCDC (7) and the air compressor assembly (8) are connected in series between the water-cooled condenser (5) and the first three-way valve (9), and the intercooler (6) is connected in parallel with the DCDC (7) and the air compressor assembly (8).
4. The control method of a fuel cell auxiliary system and a battery thermal management integrated system according to claim 1, wherein the heat radiating unit is a heat radiator (10) having a heat radiating fan (11) provided at one side thereof.
5. The control method of a fuel cell auxiliary system and a battery thermal management integrated system according to claim 1, wherein the heating ventilation air conditioning assembly comprises an air conditioner blower (16), the heat pump evaporator (14), a cold air duct, a fourth three-way valve (17), a warm air core (18), a warm air duct and a wind direction switching unit (19), the air conditioner blower (16) is arranged at one side of the heat pump evaporator (14), the heat pump evaporator (14) and the warm air core (18) are connected in series, the fourth three-way valve (17) is arranged at an outlet of the cold air duct, and the wind direction switching unit (19) is arranged at an outlet of the cold air duct and the warm air duct and is used for switching the conveying direction of air.
6. The control method of a fuel cell auxiliary system and a battery thermal management integrated system according to claim 5, wherein the fourth three-way valve (17) is a proportional three-way valve.
7. The control method of a fuel cell auxiliary system and a battery thermal management integrated system according to claim 1, wherein the third three-way valve (15) is a proportional three-way valve.
8. An automobile comprising the fuel cell auxiliary system according to claim 1 to 7, wherein the fuel cell auxiliary system and the battery thermal management integrated system are connected to a vehicle body.
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