CN215971034U - Integrated thermal management system for electric automobile - Google Patents
Integrated thermal management system for electric automobile Download PDFInfo
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- CN215971034U CN215971034U CN202122395034.3U CN202122395034U CN215971034U CN 215971034 U CN215971034 U CN 215971034U CN 202122395034 U CN202122395034 U CN 202122395034U CN 215971034 U CN215971034 U CN 215971034U
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Abstract
The utility model belongs to the technical field of automobile thermal management, and relates to an integrated thermal management system of an electric automobile, which comprises a refrigerant loop, a battery loop, a motor loop and a warm air loop; the battery circuit, the motor circuit and the warm air circuit are all provided with cooling liquid. The integrated heat management system of the electric automobile fully utilizes the residual heat of the motor and the like through the mutual correlation coupling of the refrigerant loop, the warm air loop, the battery loop and the motor loop, can realize different functional scenes of independent or mutual correlation operation of heat management of the passenger compartment, the battery heat management and the motor heat management, and meets the cooling and heating functional requirements of the heat management system. The thermal management system has the advantages of comprehensive functional application scenes, low cost, simple system and convenience in control.
Description
Technical Field
The utility model belongs to the technical field of automobile thermal management, and relates to an integrated thermal management system for an electric automobile.
Background
For an electric automobile, the thermal management system not only influences the driving comfort of a passenger car, but also involves the problems of safety and energy consumption, and how to realize the balance among the driving range, the comfort and the safety of the electric automobile in the actual environment is a problem which is urgently needed to be solved by the design of the thermal management system of the electric automobile.
At present, the thermal management system of the electric automobile mainly changes too many electronic valves, combination valves and the like to cause abnormal sound, overlarge control cost, too many types of parts, larger difficulty in maintaining and replacing the parts, larger difficulty in the state of the parts and relatively poorer safety of a passenger compartment. The system also has the advantages of more parts and large occupied space.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims to realize independent or associated operation among passenger cabin thermal management, battery thermal management and motor thermal management under different functional scenes, and provides an integrated thermal management system for an electric vehicle.
In order to achieve the purpose, the utility model provides the following technical scheme:
an integrated thermal management system of an electric automobile comprises a refrigerant loop, a battery loop, a motor loop and a warm air loop; the battery circuit, the motor circuit and the warm air circuit are all provided with cooling liquid;
the refrigerant loop comprises a compressor, a water-cooled condenser, a liquid storage tank, an electronic expansion valve and a motor cooler which are sequentially connected in series to form a closed loop;
the warm air loop comprises a warm air core body, a second tee joint, a third tee joint, a first water pump, a water heater, a first tee joint, a second tee joint, a first tee joint, a second water pump, a ninth tee joint, a fifth tee joint, a cooling core body, a sixth tee joint, a seventh tee joint, a first stop valve, a third stop valve, a ninth tee joint and a high-temperature radiator; the warm air loop comprises a first warm air loop, a second warm air loop, a third warm air loop and a fourth warm air loop;
the first warm air loop comprises the warm air core, a second tee joint, a third tee joint, a water-cooled condenser, a first water pump, a water heater, a first tee joint, a second tee joint and a first tee joint which are sequentially connected in series;
the second warm air loop comprises the motor cooler, a second water pump, a ninth three-way valve, a fifth three-way valve, a cooling core, a sixth three-way valve, a first tee joint, a warm air core, a second tee joint, a third three-way valve, a sixth tee joint, a third stop valve and a ninth tee joint which are sequentially connected in series;
the third warm air loop is sequentially connected in series to form the water-cooled condenser, the first water pump, the water heater, the first three-way valve, the high-temperature radiator, the first stop valve and the third three-way valve which are closed loops;
the fourth warm air loop comprises the cooling core body, a sixth three-way valve, a seventh three-way valve, a sixth three-way valve, a third stop valve, a ninth three-way valve, a motor cooler, a second water pump, a ninth three-way valve and a fifth three-way valve which are sequentially connected in series to form a closed loop;
the battery loop comprises a battery, a battery cooler, a fourth water pump and a fourth tee joint; the battery loops comprise a first battery loop, a second battery loop and a third battery loop;
the first battery loop comprises a battery, a battery cooler and a fourth water pump which are sequentially connected in series to form a closed loop;
the second battery loop is sequentially connected in series to form the battery cooler, a fourth three-way valve, a seventh three-way valve, a sixth three-way valve, a third stop valve, a ninth three-way valve, a motor cooler, a second water pump, a ninth three-way valve, a fifth three-way valve and a fourth three-way valve which are closed loops;
the third battery loop comprises the battery cooler, a fourth three-way valve, a third three-way valve, a water-cooled condenser, a first water pump, a water heater, a first three-way valve, a second three-way valve and a fourth three-way valve which are sequentially connected in series to form a closed loop;
the motor loop comprises a motor, a seventh three-way valve, an eighth three-way valve, a third water pump, a direct-current voltage converter, a low-temperature radiator and a fifth three-way valve; the motor loops comprise a first motor loop, a second motor loop and a third motor loop;
the first motor loop comprises the third water pump, a direct-current voltage converter, a motor, a seventh three-way valve, an eighth three-way valve and an eighth three-way valve which are sequentially connected in series to form a closed loop;
the second motor loop comprises the motor cooler, a second water pump, a ninth three-way valve, a fifth three-way valve, a low-temperature radiator, a second stop valve, an eighth three-way valve, a third water pump, a direct-current voltage converter, a motor, a seventh three-way valve and a ninth three-way valve which are sequentially connected in series to form a closed loop;
the third motor loop comprises a third water pump, a direct-current voltage converter, a motor, a seventh three-way valve, an eighth three-way valve, a fifth three-way valve, a low-temperature radiator, a second stop valve and an eighth three-way valve which are sequentially connected in series to form a closed loop.
Furthermore, temperature sensors are arranged on a connecting pipeline between the water heater and the first three-way valve, a connecting pipeline between the second water pump and the ninth three-way valve, a connecting pipeline between the direct-current voltage converter and the motor, and a connecting pipeline between the battery cooler and the battery.
Further, the integrated heat management system comprises passenger cabin heat management, battery heat management and motor heat management;
the passenger compartment thermal management comprises a passenger compartment cooling mode, a passenger compartment heating mode and a passenger compartment heat pump demisting mode; the passenger compartment heating modes comprise a first passenger compartment heating mode, a second passenger compartment heating mode, a third passenger compartment heating mode and a passenger compartment water heater heating mode;
the battery thermal management comprises a battery self-circulation mode, a battery cooling mode, a battery heat pump heating mode and a battery water heater heating mode;
the motor heat management mode comprises a motor self-circulation mode, a motor radiator cooling mode and a motor heat pump cooling mode.
Further, the working modes of the passenger compartment cooling mode are as follows: opening the refrigerant loop, the second warm air loop and the third warm air loop; the refrigerant circularly flows in the refrigerant loop, and the cooling liquid circularly flows in the second warm air loop and the third warm air loop respectively;
the cooling liquid in the third warm air loop absorbs the heat in the refrigerant through the water-cooled condenser and dissipates the heat through the high-temperature radiator; the refrigerant is cooled by the water-cooled condenser and then evaporated and absorbed by the motor cooler, so that the heat of the cooling liquid in the second warm air loop is absorbed; after the cooling liquid in the second warm air loop is cooled by the motor cooler, the passenger compartment is cooled by the cooling core body and the warm air core body.
Further, the operation mode of the first passenger compartment heating mode is as follows: starting the refrigerant loop, the first warm air loop and the second motor loop; the refrigerant circularly flows in the refrigerant loop, and the cooling liquid circularly flows in the first warm air loop and the second motor loop respectively;
cooling liquid in the second motor loop absorbs environmental heat through the low-temperature radiator and absorbs motor waste heat at the same time; the cooling liquid absorbing heat transfers heat to a refrigerant through a motor cooler; the refrigerant transfers heat to the cooling liquid in the first warm air loop through the water-cooled condenser; and after absorbing heat, the coolant in the first warm air loop heats the passenger cabin through the warm air core body.
Further, the operation mode of the second passenger compartment heating mode is as follows: opening the refrigerant loop, the first warm air loop, the first motor loop and the second motor loop; the refrigerant circularly flows in the refrigerant loop, and the cooling liquid circularly flows in the first warm air loop, the first motor loop and the second motor loop;
the cooling liquid performs heat absorption and heat release circulation on the motor through the first motor loop to maintain the temperature of the motor; the cooling liquid absorbs the ambient temperature through the low-temperature radiator in the second motor loop, absorbs the heat of the motor, and transfers the heat to the refrigerant through the motor cooler; the refrigerant transfers heat to the cooling liquid in the first warm air loop through the water-cooled condenser; the cooling liquid in the first warm air loop heats the passenger cabin through the warm air core.
Further, the operation mode of the third passenger compartment heating mode is as follows: opening the refrigerant loop, the first warm air loop, the first motor loop, the second motor loop and the third motor loop; the refrigerant circularly flows in the refrigerant loop, and the cooling liquid circularly flows in the first warm air loop, the first motor loop, the second motor loop and the third motor loop; the cooling liquid in the first motor loop, the second motor loop and the third motor loop transfers the motor waste heat to the refrigerant through the motor cooler, the refrigerant transfers the heat to the cooling liquid in the first warm air loop through the water-cooled condenser, and the passenger compartment is heated through the warm air core body; wherein, the cooling liquid releases heat or absorbs heat in the environment through the low-temperature radiator.
Further, the operation modes of the heating mode of the passenger compartment water heater are as follows: starting the first warm air loop; the cooling liquid circularly flows in the first warm air loop; the cooling liquid is heated by the water heater and then heats the passenger compartment through the warm air core body.
Further, the working modes of the passenger compartment heat pump cooling demisting mode are as follows: starting the refrigerant loop, the first warm air loop, the second motor loop and the fourth warm air loop; simultaneously adjusting the sixth three-way valve to enable the sixth three-way valve to be communicated with the first three-way valve; the cooling liquid absorbs the environmental heat through the low-temperature radiator, the refrigerant absorbs the motor waste heat through the motor cooler and circularly flows in the refrigerant loop, and the cooling liquid circularly flows in the first warm air loop, the second motor loop and the fourth warm air loop; the refrigerant absorbs the waste heat of the motor through the motor cooler, the heat is transferred to the cooling liquid in the first warm air loop through the water-cooled condenser, and the cooling liquid heats the glass through the warm air core body for demisting; meanwhile, cooling liquid in the fourth warm air loop cools the passenger cabin through the cooling core body; and the cooling liquid in the second motor loop absorbs heat in the environment through the low-temperature radiator.
Further, the working mode of the battery self-circulation mode is as follows: opening a first battery loop of the battery loops; the coolant circulates in the first battery circuit, and the battery is subjected to heat absorption and heat release cycles to maintain the battery temperature.
Further, the battery cooling mode comprises the following working modes: opening the refrigerant loop, the first battery loop, the third warm air loop and the second battery loop;
the cooling liquid in the first battery loop transfers the heat of the battery to the cooling liquid in the second battery loop through the battery cooler to cool the battery; the cooling liquid in the second battery loop transfers heat to the cooling medium through the motor cooler, the cooling medium transfers heat to the cooling liquid in the third warm air loop through the water-cooled condenser, and the cooling liquid in the third warm air loop releases heat outwards through the high-temperature radiator.
Further, the operation modes of the battery heat pump heating mode are as follows: opening the refrigerant loop, the first battery loop, the third battery loop and the second motor loop;
the heat energy absorbed by the low-temperature radiator in the second motor loop and the motor waste heat are transferred to the refrigerant through the motor cooler, the refrigerant transfers the heat to the cooling liquid in the third battery loop through the water-cooled condenser, and the cooling liquid in the third battery loop transfers the heat to the cooling liquid in the first battery loop through the battery cooler to heat the battery.
Further, the operation modes of the battery water heater heating mode are as follows: starting the first battery loop and the third battery loop; the cooling liquid respectively circulates in the first battery loop and the third battery loop, and the cooling liquid in the third battery loop is heated by the water heater and then transfers heat to the cooling liquid in the first battery loop through the battery cooler to heat the battery.
Further, the working modes of the motor self-circulation mode are as follows: starting the first motor loop; the cooling liquid circularly flows in the first motor loop to perform heat absorption and heat release circulation on the motor and maintain the temperature of the motor.
Further, the working modes of the cooling mode of the motor radiator are as follows: and starting the third motor loop, enabling the cooling liquid to circularly flow in the third loop, and absorbing the heat of the motor and the direct-current voltage converter after the cooling liquid releases heat energy through the low-temperature radiator to cool the motor and the direct-current voltage converter.
Further, the working modes of the motor heat pump cooling mode are as follows: starting the refrigerant loop, the first warm air loop, the first battery loop, the third battery loop, the first motor loop, the second motor loop and the third motor loop;
the coolant absorbs the waste heat of the motor and the heat absorbed by the low-temperature radiator through the motor cooler, transfers the heat to the coolant in the first warm air loop and the third battery loop through the water-cooled condenser, heats the passenger cabin through the warm air core body by the coolant in the first warm air loop and the third battery loop, and/or heats the battery by transferring the heat to the coolant in the first battery loop through the battery cooler.
The utility model has the beneficial effects that:
1) the integrated design of this scheme refrigerant system, the system is simple, and control is simple, and the part is less, and the cost is lower.
2) According to the scheme, the heat management system fully utilizes the residual heat of the motor and the like through the mutual correlation coupling of the warm air loop, the battery loop and the motor loop, can realize independent or mutual correlation operation of different functional scenes of passenger cabin heat management, battery heat management and motor heat management, and meets the cooling and heating function requirements of the heat management system. The thermal management system has the advantages of comprehensive functional application scenes, low cost, simple system and convenience in control.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the utility model, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 is an overall schematic diagram of an electric vehicle integrated thermal management system in the present invention 1.
Reference numerals: 1-a compressor; 2-water-cooled condenser; 3-a liquid storage tank; 4-an electronic expansion valve; 5-a motor cooler; 6-warm air core body; 7-a second tee; 8-a third three-way valve; 9-a third tee; 10-a first water pump; 11-a water heater; 12-a first three-way valve; 13-a second three-way valve; 14-a first tee; 15-a second water pump; 16-a ninth three-way valve; 17-a fifth three-way valve; 18-a cooling core; 19-a sixth three-way valve; 20-a sixth tee; 21-a seventh tee; 22-a first shut-off valve; 23-a third stop valve; 24-a ninth tee; 25-high temperature heat sink; 26-a low temperature heat sink; 27-a fifth tee; 28-an eighth three-way valve; 29-a second stop valve; 30-an eighth tee; 31-a third water pump; 32-a dc voltage converter; 33-a motor; 34-a seventh three-way valve; 35-a battery; 36-a battery cooler; 37-a fourth water pump; 38-fourth tee; 39-fourth three-way valve.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the utility model only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the utility model thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to fig. 1, an integrated thermal management system for an electric vehicle includes a coolant loop, a battery loop, a motor loop, and a warm air loop; wherein, the refrigerant loop is provided with a refrigerant, and the battery loop, the motor loop and the warm air loop are all provided with cooling liquid;
the refrigerant loop comprises a compressor 1, a water-cooled condenser 2, a liquid storage tank 3, an electronic expansion valve 4 and a motor cooler 5 which are sequentially connected in series to form a closed loop;
the warm air loop comprises a warm air core body 6, a second tee joint 7, a third three-way valve 8, a third tee joint 9, a first water pump 10, a water heater 11, a first three-way valve 12, a second three-way valve 13, a first three-way valve 14, a second water pump 15, a ninth three-way valve 16, a fifth three-way valve 17, a cooling core body 18, a sixth three-way valve 19, a sixth three-way valve 20, a seventh three-way valve 21, a first stop valve 22, a third stop valve 23, a ninth three-way valve 24 and a high-temperature radiator 25; the warm air loop comprises a first warm air loop, a second warm air loop, a third warm air loop and a fourth warm air loop;
the first warm air loop comprises a warm air core body 6, a second tee joint 7, a third tee joint 8, a third tee joint 9, a water-cooled condenser 2, a first water pump 10, a water heater 11, a first tee joint 12, a second tee joint 13 and a first tee joint 14 which are sequentially connected in series;
the second warm air loop comprises a motor cooler 5, a second water pump 15, a ninth three-way valve 16, a fifth three-way valve 17, a cooling core 18, a sixth three-way valve 19, a first three-way valve 14, a warm air core 6, a second three-way valve 7, a third three-way valve 8, a sixth three-way valve 20, a third stop valve 23 and a ninth three-way valve 24 which are sequentially connected in series;
the third warm air loop is sequentially connected in series to form a water-cooled condenser 2, a first water pump 10, a water heater 11, a first three-way valve 14, a high-temperature radiator 25, a first stop valve 22 and a third three-way valve 9 which are closed loops;
the fourth warm air loop comprises a cooling core body 18, a sixth three-way valve 19, a seventh three-way valve 21, a sixth three-way valve 20, a third stop valve 23, a ninth three-way valve 24, the motor cooler 5, a second water pump 15, a ninth three-way valve 16 and a fifth three-way valve 17 which are sequentially connected in series to form a closed loop;
the battery loop comprises a battery 35, a battery cooler 36, a fourth water pump 37 and a fourth tee joint 38; the battery loop comprises a first battery loop, a second battery loop and a third battery loop;
the first battery loop comprises a battery 35, a battery cooler 36 and a fourth water pump 37 which are sequentially connected in series to form a closed loop;
the second battery loop is sequentially connected in series to form a battery cooler 36, a fourth three-way valve 39, a seventh three-way valve 21, a sixth three-way valve 20, a third stop valve 23, a ninth three-way valve 24, a motor cooler 5, a second water pump 15, a ninth three-way valve 16, a fifth three-way valve 17 and a fourth three-way valve 38 which are closed loops;
the third battery 35 loop comprises a battery cooler 36, a fourth three-way valve 39, a third three-way valve 8, a third three-way valve 9, a water-cooled condenser 2, a first water pump 10, a water heater 11, a first three-way valve 12, a second three-way valve 13 and a fourth three-way valve 38 which are sequentially connected in series to form a closed loop;
the motor loop comprises a motor 33, a seventh three-way valve 34, an eighth three-way valve 28, an eighth three-way valve 30, a third water pump 31, a direct-current voltage converter 32, a low-temperature radiator 26 and a fifth three-way valve 27; the motor loop comprises a first motor loop, a second motor loop and a third motor loop;
the first motor loop comprises a third water pump 31, a direct-current voltage converter 32, a motor 33, a seventh three-way valve 34, an eighth three-way valve 28 and an eighth three-way valve 30 which are sequentially connected in series to form a closed loop;
the second motor loop comprises a motor cooler 5, a second water pump 15, a ninth three-way valve 16, a fifth three-way valve 27, a low-temperature radiator 26, a second stop valve 29, an eighth three-way valve 30, a third water pump 31, a direct-current voltage converter 32, a motor 33, a seventh three-way valve 34 and a ninth three-way valve 24 which are sequentially connected in series to form a closed loop;
the third motor loop comprises a third water pump 31, a direct-current voltage converter 32, a motor 33, a seventh three-way valve 34, an eighth three-way valve 28, a fifth three-way valve 27, a low-temperature radiator 26, a second stop valve 29 and an eighth three-way valve 30 which are sequentially connected in series to form a closed loop.
A temperature sensor T1 is installed on a connection pipe between the water heater 11 and the first three-way valve 12, a temperature sensor T2 is installed on a connection pipe between the second water pump 15 and the ninth three-way valve 16, a temperature sensor T3 is installed on a connection pipe between the dc voltage converter 32 and the motor 33, and a temperature sensor T4 is installed on a connection pipe between the battery cooler 36 and the battery 35.
The integrated heat management system comprises passenger cabin heat management, battery heat management and motor heat management;
the passenger compartment thermal management comprises a passenger compartment cooling mode, a passenger compartment heating mode and a passenger compartment heat pump demisting mode; the passenger compartment heating modes comprise a first passenger compartment heating mode, a second passenger compartment heating mode, a third passenger compartment heating mode and a passenger compartment water heater heating mode;
the battery thermal management comprises a battery self-circulation mode, a battery cooling mode, a battery heat pump heating mode and a battery water heater heating mode;
the motor heat management mode comprises a motor self-circulation mode, a motor radiator cooling mode and a motor heat pump cooling mode.
The working modes of the passenger compartment cooling mode are as follows: when the ambient temperature is higher and the passenger compartment has a cooling demand, the refrigerant loop, the second warm air loop and the third warm air loop are started; the refrigerant circularly flows in the refrigerant loop, and the cooling liquid circularly flows in the second warm air loop and the third warm air loop respectively;
the coolant in the third warm air loop absorbs the heat in the refrigerant through the water-cooled condenser 2 and radiates the heat through the high-temperature radiator 25; the refrigerant is cooled by the water-cooled condenser 2 and then evaporated and absorbed by the motor cooler 5 to absorb the heat of the cooling liquid in the second warm air loop; after the cooling liquid in the second warm air loop is cooled by the motor cooler 5, the passenger compartment is cooled by the cooling core 18 and the warm air core 6.
The working mode of the first passenger compartment heating mode is as follows: when the heating requirement of a passenger compartment is large or the waste heat of a motor is just started in winter of the whole vehicle is insufficient, a refrigerant loop, a first warm air loop and a second motor loop are started; the refrigerant circularly flows in the refrigerant loop, and the cooling liquid circularly flows in the first warm air loop and the second motor loop respectively;
the cooling liquid in the second motor loop absorbs the environmental heat through the low-temperature radiator 26 and simultaneously absorbs the waste heat of the motor 33; the cooling liquid absorbing heat transfers heat to a refrigerant through the motor cooler 5; the refrigerant transfers heat to the cooling liquid in the first warm air loop through the water-cooled condenser 2; after absorbing heat, the coolant in the first warm air loop heats the passenger compartment through the warm air core 6.
The working mode of the second passenger compartment heating mode is as follows: when the heating requirement of the passenger compartment is not large and the temperature difference of the motor is large, the refrigerant loop, the first warm air loop, the first motor loop and the second motor loop are started; the refrigerant circularly flows in the refrigerant loop, and the cooling liquid circularly flows in the first warm air loop, the first motor loop and the second motor loop;
the cooling liquid performs heat absorption and heat release circulation on the motor 33 through the first motor loop, and maintains the temperature of the motor 33; the cooling liquid absorbs the ambient temperature through the low-temperature radiator 26 in the second motor loop, absorbs the heat of the motor 33, and transfers the heat to the refrigerant through the motor cooler 5; the refrigerant transfers heat to the cooling liquid in the first warm air loop through the water-cooled condenser 2; the coolant in the first warm air loop heats the passenger compartment through the warm air core 6.
The working mode of the third passenger compartment heating mode is as follows: when the heating requirement of the passenger compartment is not large and the residual heat of the motor is sufficient, a refrigerant loop, a first warm air loop, a first motor loop, a second motor loop and a third motor loop are started; the refrigerant circularly flows in the refrigerant loop, and the cooling liquid circularly flows in the first warm air loop, the first motor loop, the second motor loop and the third motor loop; the residual heat of the motor 33 is transferred to the refrigerant by the cooling liquid in the first motor loop, the second motor loop and the third motor loop through the motor cooler 5, the heat of the refrigerant is transferred to the cooling liquid in the first warm air loop through the water-cooled condenser 2, and the passenger compartment is heated through the warm air core 6; wherein the coolant radiates or absorbs heat from the environment through the low temperature radiator 26.
The working modes of the heating mode of the passenger cabin water heater are as follows: when the ambient temperature is lower than the lowest temperature at which the heat pump can operate, starting a first warm air loop; the cooling liquid circularly flows in the first warm air loop; the coolant is heated by the water heater 11 and then heats the passenger compartment through the warm air core 6.
Wherein, the working mode of passenger cabin heat pump cooling defogging mode does: when the ambient temperature is low, the passenger cabin needs to be heated, and the glass needs to be demisted due to fogging, the refrigerant loop, the first warm air loop, the second motor loop and the fourth warm air loop are started; simultaneously adjusting the sixth three-way valve 19 to communicate the sixth three-way valve 19 with the first three-way valve 14; the cooling liquid absorbs the environmental heat through the low-temperature radiator 26, the cooling medium absorbs the residual heat of the motor 33 through the motor cooler 5 and circularly flows in the cooling medium loop, and the cooling liquid circularly flows in the first warm air loop, the second motor loop and the fourth warm air loop; the refrigerant absorbs the waste heat of the motor 33 through the motor cooler 5, the heat is transferred to the cooling liquid in the first warm air loop through the water-cooled condenser 2, and the cooling liquid heats the glass through the warm air core body 6 to demist; meanwhile, the cooling liquid in the fourth warm air loop cools the passenger compartment through the cooling core 18; wherein the cooling liquid in the second motor circuit absorbs heat from the environment through the low temperature radiator 26.
The working mode of the battery self-circulation mode is as follows: when the battery has no cooling and heating requirements, in order to ensure the temperature uniformity of the battery, a first battery loop in the battery loops is started; the coolant circulates through the first battery circuit, and circulates heat absorption and heat release to the battery 35, thereby maintaining the temperature of the battery 35.
The working modes of the battery cooling mode are as follows: when the internal temperature of the battery is high and reaches a certain temperature, in order to ensure the service life and the safety of the battery, a refrigerant loop, a first battery loop, a third warm air loop and a second battery loop are started;
the coolant in the first battery loop transfers the heat of the battery 35 to the coolant in the second battery loop through the battery cooler 36 to cool the battery 35; the cooling liquid in the second battery loop transfers heat to the cooling medium through the motor cooler 5, the cooling medium transfers heat to the cooling liquid in the third warm air loop through the water-cooled condenser 2, and the cooling liquid in the third warm air loop releases heat outwards through the high-temperature radiator 25.
The working modes of the battery heat pump heating mode are as follows: when the ambient temperature is low, the battery is in a low-temperature state, the heat of the battery is not enough to ensure the highest efficiency work of the battery, the charging and discharging power of the battery is limited, the charging speed and the endurance performance of the whole vehicle are influenced, and in order to ensure the normal work of a battery system, a refrigerant loop, a first battery loop, a third battery loop and a second motor loop are started;
the heat energy absorbed by the low-temperature radiator 26 in the second motor loop and the residual heat of the motor 33 are transferred to the refrigerant through the motor cooler 5, the refrigerant transfers the heat to the cooling liquid in the third battery loop through the water-cooled condenser 2, and the cooling liquid in the third battery loop transfers the heat to the cooling liquid in the first battery loop through the battery cooler 36 to heat the battery 35.
The working modes of the battery water heater heating mode are as follows: when the battery heating demand is large and the environmental temperature and the waste heat are low, the first battery loop and the third battery loop are started; the coolant circulates in the first battery circuit and the third battery circuit, respectively, and the coolant in the third battery circuit is heated by the water heater 11, and then the heat is transferred to the coolant in the first battery circuit through the battery cooler 36, so as to heat the battery 35.
The working modes of the motor self-circulation mode are as follows: when the environment temperature is low and the whole vehicle is cold started, the motor temperature is low, and a first motor loop is started; the coolant circulates through the first motor circuit, and circulates the motor 33 by absorbing and releasing heat, thereby maintaining the temperature of the motor 33.
Wherein, the mode of operation of motor radiator cooling mode does: when the temperature of the motor is high and the motor has a cooling demand and the residual heat of the motor is not effectively utilized, the third motor loop is started, the cooling liquid circularly flows in the third loop, and the cooling liquid absorbs the heat of the motor 33 and the direct-current voltage converter 32 after releasing the heat energy through the low-temperature radiator 26 to cool the motor 33 and the direct-current voltage converter 32.
The working modes of the motor heat pump cooling mode are as follows: when the ambient temperature is low and the waste heat is sufficient, and the passenger compartment or the battery has a heating demand, the refrigerant loop, the first warm air loop, the first battery loop, the third battery loop, the first motor loop, the second motor loop and the third motor loop are started;
the coolant absorbs the residual heat of the motor 33 and the heat absorbed by the low-temperature radiator 26 through the motor cooler 5, transfers the heat to the coolant in the first warm air loop and the third battery loop through the water-cooled condenser 2, heats the passenger compartment through the warm air core 6 and/or heats the battery 35 through transferring the heat to the coolant in the first battery loop through the battery cooler 36.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (16)
1. An electric automobile integrated form thermal management system which characterized in that: the system comprises a refrigerant loop, a battery loop, a motor loop and a warm air loop; the battery circuit, the motor circuit and the warm air circuit are all provided with cooling liquid;
the refrigerant loop comprises a compressor, a water-cooled condenser, a liquid storage tank, an electronic expansion valve and a motor cooler which are sequentially connected in series to form a closed loop;
the warm air loop comprises a warm air core body, a second tee joint, a third tee joint, a first water pump, a water heater, a first tee joint, a second tee joint, a first tee joint, a second water pump, a ninth tee joint, a fifth tee joint, a cooling core body, a sixth tee joint, a seventh tee joint, a first stop valve, a third stop valve, a ninth tee joint and a high-temperature radiator; the warm air loop comprises a first warm air loop, a second warm air loop, a third warm air loop and a fourth warm air loop;
the first warm air loop comprises the warm air core, a second tee joint, a third tee joint, a water-cooled condenser, a first water pump, a water heater, a first tee joint, a second tee joint and a first tee joint which are sequentially connected in series;
the second warm air loop comprises the motor cooler, a second water pump, a ninth three-way valve, a fifth three-way valve, a cooling core, a sixth three-way valve, a first tee joint, a warm air core, a second tee joint, a third three-way valve, a sixth tee joint, a third stop valve and a ninth tee joint which are sequentially connected in series;
the third warm air loop is sequentially connected in series to form the water-cooled condenser, the first water pump, the water heater, the first three-way valve, the high-temperature radiator, the first stop valve and the third three-way valve which are closed loops;
the fourth warm air loop comprises the cooling core body, a sixth three-way valve, a seventh three-way valve, a sixth three-way valve, a third stop valve, a ninth three-way valve, a motor cooler, a second water pump, a ninth three-way valve and a fifth three-way valve which are sequentially connected in series to form a closed loop;
the battery loop comprises a battery, a battery cooler, a fourth water pump and a fourth tee joint; the battery loops comprise a first battery loop, a second battery loop and a third battery loop;
the first battery loop comprises a battery, a battery cooler and a fourth water pump which are sequentially connected in series to form a closed loop;
the second battery loop is sequentially connected in series to form the battery cooler, a fourth three-way valve, a seventh three-way valve, a sixth three-way valve, a third stop valve, a ninth three-way valve, a motor cooler, a second water pump, a ninth three-way valve, a fifth three-way valve and a fourth three-way valve which are closed loops;
the third battery loop comprises the battery cooler, a fourth three-way valve, a third three-way valve, a water-cooled condenser, a first water pump, a water heater, a first three-way valve, a second three-way valve and a fourth three-way valve which are sequentially connected in series to form a closed loop;
the motor loop comprises a motor, a seventh three-way valve, an eighth three-way valve, a third water pump, a direct-current voltage converter, a low-temperature radiator and a fifth three-way valve; the motor loops comprise a first motor loop, a second motor loop and a third motor loop;
the first motor loop comprises the third water pump, a direct-current voltage converter, a motor, a seventh three-way valve, an eighth three-way valve and an eighth three-way valve which are sequentially connected in series to form a closed loop;
the second motor loop comprises the motor cooler, a second water pump, a ninth three-way valve, a fifth three-way valve, a low-temperature radiator, a second stop valve, an eighth three-way valve, a third water pump, a direct-current voltage converter, a motor, a seventh three-way valve and a ninth three-way valve which are sequentially connected in series to form a closed loop;
the third motor loop comprises a third water pump, a direct-current voltage converter, a motor, a seventh three-way valve, an eighth three-way valve, a fifth three-way valve, a low-temperature radiator, a second stop valve and an eighth three-way valve which are sequentially connected in series to form a closed loop.
2. The integrated thermal management system for electric vehicles according to claim 1, wherein: temperature sensors are arranged on a connecting pipeline between the water heater and the first three-way valve, a connecting pipeline between the second water pump and the ninth three-way valve, a connecting pipeline between the direct-current voltage converter and the motor and a connecting pipeline between the battery cooler and the battery.
3. The integrated thermal management system for electric vehicles according to claim 1, wherein: the integrated heat management system comprises passenger cabin heat management, battery heat management and motor heat management;
the passenger compartment thermal management comprises a passenger compartment cooling mode, a passenger compartment heating mode and a passenger compartment heat pump demisting mode; the passenger compartment heating modes comprise a first passenger compartment heating mode, a second passenger compartment heating mode, a third passenger compartment heating mode and a passenger compartment water heater heating mode;
the battery thermal management comprises a battery self-circulation mode, a battery cooling mode, a battery heat pump heating mode and a battery water heater heating mode;
the motor heat management mode comprises a motor self-circulation mode, a motor radiator cooling mode and a motor heat pump cooling mode.
4. The integrated thermal management system for electric vehicles of claim 3, wherein: the working modes of the passenger compartment cooling mode are as follows: opening the refrigerant loop, the second warm air loop and the third warm air loop; the refrigerant circularly flows in the refrigerant loop, and the cooling liquid circularly flows in the second warm air loop and the third warm air loop respectively;
the cooling liquid in the third warm air loop absorbs the heat in the refrigerant through the water-cooled condenser and dissipates the heat through the high-temperature radiator; the refrigerant is cooled by the water-cooled condenser and then evaporated and absorbed by the motor cooler, so that the heat of the cooling liquid in the second warm air loop is absorbed; after the cooling liquid in the second warm air loop is cooled by the motor cooler, the passenger compartment is cooled by the cooling core body and the warm air core body.
5. The integrated thermal management system for electric vehicles of claim 3, wherein: the operation mode of the first passenger compartment heating mode is as follows: starting the refrigerant loop, the first warm air loop and the second motor loop; the refrigerant circularly flows in the refrigerant loop, and the cooling liquid circularly flows in the first warm air loop and the second motor loop respectively;
cooling liquid in the second motor loop absorbs environmental heat through the low-temperature radiator and absorbs motor waste heat at the same time; the cooling liquid absorbing heat transfers heat to a refrigerant through a motor cooler; the refrigerant transfers heat to the cooling liquid in the first warm air loop through the water-cooled condenser; and after absorbing heat, the coolant in the first warm air loop heats the passenger cabin through the warm air core body.
6. The integrated thermal management system for electric vehicles of claim 3, wherein: the working modes of the second passenger compartment heating mode are as follows: opening the refrigerant loop, the first warm air loop, the first motor loop and the second motor loop; the refrigerant circularly flows in the refrigerant loop, and the cooling liquid circularly flows in the first warm air loop, the first motor loop and the second motor loop;
the cooling liquid performs heat absorption and heat release circulation on the motor through the first motor loop to maintain the temperature of the motor; the cooling liquid absorbs the ambient temperature through the low-temperature radiator in the second motor loop, absorbs the heat of the motor, and transfers the heat to the refrigerant through the motor cooler; the refrigerant transfers heat to the cooling liquid in the first warm air loop through the water-cooled condenser; the cooling liquid in the first warm air loop heats the passenger cabin through the warm air core.
7. The integrated thermal management system for electric vehicles of claim 3, wherein: the operation mode of the third passenger compartment heating mode is as follows: opening the refrigerant loop, the first warm air loop, the first motor loop, the second motor loop and the third motor loop; the refrigerant circularly flows in the refrigerant loop, and the cooling liquid circularly flows in the first warm air loop, the first motor loop, the second motor loop and the third motor loop; the cooling liquid in the first motor loop, the second motor loop and the third motor loop transfers the motor waste heat to the refrigerant through the motor cooler, the refrigerant transfers the heat to the cooling liquid in the first warm air loop through the water-cooled condenser, and the passenger compartment is heated through the warm air core body; wherein, the cooling liquid releases heat or absorbs heat in the environment through the low-temperature radiator.
8. The integrated thermal management system for electric vehicles of claim 3, wherein: the working modes of the heating mode of the passenger cabin water heater are as follows: starting the first warm air loop; the cooling liquid circularly flows in the first warm air loop; the cooling liquid is heated by the water heater and then heats the passenger compartment through the warm air core body.
9. The integrated thermal management system for electric vehicles of claim 3, wherein: the working modes of the passenger compartment heat pump cooling demisting mode are as follows: starting the refrigerant loop, the first warm air loop, the second motor loop and the fourth warm air loop; simultaneously adjusting the sixth three-way valve to enable the sixth three-way valve to be communicated with the first three-way valve; the cooling liquid absorbs the environmental heat through the low-temperature radiator, the refrigerant absorbs the motor waste heat through the motor cooler and circularly flows in the refrigerant loop, and the cooling liquid circularly flows in the first warm air loop, the second motor loop and the fourth warm air loop; the refrigerant absorbs the waste heat of the motor through the motor cooler, the heat is transferred to the cooling liquid in the first warm air loop through the water-cooled condenser, and the cooling liquid heats the glass through the warm air core body for demisting; meanwhile, cooling liquid in the fourth warm air loop cools the passenger cabin through the cooling core body; and the cooling liquid in the second motor loop absorbs heat in the environment through the low-temperature radiator.
10. The integrated thermal management system for electric vehicles of claim 3, wherein: the working modes of the battery self-circulation mode are as follows: opening a first battery loop of the battery loops; the coolant circulates in the first battery circuit, and the battery is subjected to heat absorption and heat release cycles to maintain the battery temperature.
11. The integrated thermal management system for electric vehicles of claim 3, wherein: the working modes of the battery cooling mode are as follows: opening the refrigerant loop, the first battery loop, the third warm air loop and the second battery loop;
the cooling liquid in the first battery loop transfers the heat of the battery to the cooling liquid in the second battery loop through the battery cooler to cool the battery; the cooling liquid in the second battery loop transfers heat to the cooling medium through the motor cooler, the cooling medium transfers heat to the cooling liquid in the third warm air loop through the water-cooled condenser, and the cooling liquid in the third warm air loop releases heat outwards through the high-temperature radiator.
12. The integrated thermal management system for electric vehicles of claim 3, wherein: the working modes of the battery heat pump heating mode are as follows: opening the refrigerant loop, the first battery loop, the third battery loop and the second motor loop;
the heat energy absorbed by the low-temperature radiator in the second motor loop and the motor waste heat are transferred to the refrigerant through the motor cooler, the refrigerant transfers the heat to the cooling liquid in the third battery loop through the water-cooled condenser, and the cooling liquid in the third battery loop transfers the heat to the cooling liquid in the first battery loop through the battery cooler to heat the battery.
13. The integrated thermal management system for electric vehicles of claim 3, wherein: the working modes of the battery water heater heating mode are as follows: starting the first battery loop and the third battery loop; the cooling liquid respectively circulates in the first battery loop and the third battery loop, and the cooling liquid in the third battery loop is heated by the water heater and then transfers heat to the cooling liquid in the first battery loop through the battery cooler to heat the battery.
14. The integrated thermal management system for electric vehicles of claim 3, wherein: the working modes of the motor self-circulation mode are as follows: starting the first motor loop; the cooling liquid circularly flows in the first motor loop to perform heat absorption and heat release circulation on the motor and maintain the temperature of the motor.
15. The integrated thermal management system for electric vehicles of claim 3, wherein: the working modes of the cooling mode of the motor radiator are as follows: and starting the third motor loop, enabling the cooling liquid to circularly flow in the third loop, and absorbing the heat of the motor and the direct-current voltage converter after the cooling liquid releases heat energy through the low-temperature radiator to cool the motor and the direct-current voltage converter.
16. The integrated thermal management system for electric vehicles of claim 3, wherein: the working modes of the motor heat pump cooling mode are as follows: starting the refrigerant loop, the first warm air loop, the first battery loop, the third battery loop, the first motor loop, the second motor loop and the third motor loop;
the coolant absorbs the waste heat of the motor and the heat absorbed by the low-temperature radiator through the motor cooler, transfers the heat to the coolant in the first warm air loop and the third battery loop through the water-cooled condenser, heats the passenger cabin through the warm air core body by the coolant in the first warm air loop and the third battery loop, and/or heats the battery by transferring the heat to the coolant in the first battery loop through the battery cooler.
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| CN202122395034.3U CN215971034U (en) | 2021-09-30 | 2021-09-30 | Integrated thermal management system for electric automobile |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113715581A (en) * | 2021-09-30 | 2021-11-30 | 南方英特空调有限公司 | Integrated thermal management system for electric automobile |
| CN114571955A (en) * | 2022-03-31 | 2022-06-03 | 美的集团(上海)有限公司 | Thermal management system, control method, control device, program product, storage medium, and vehicle |
| CN114643833A (en) * | 2022-04-20 | 2022-06-21 | 广州小鹏汽车科技有限公司 | Thermal management system and vehicle |
| CN115056628A (en) * | 2022-06-30 | 2022-09-16 | 中国第一汽车股份有限公司 | Novel hybrid vehicle type thermal management system and vehicle |
| CN115534620A (en) * | 2022-09-23 | 2022-12-30 | 智己汽车科技有限公司 | Electric automobile heat management system, control method thereof and electric automobile |
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- 2021-09-30 CN CN202122395034.3U patent/CN215971034U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113715581A (en) * | 2021-09-30 | 2021-11-30 | 南方英特空调有限公司 | Integrated thermal management system for electric automobile |
| CN113715581B (en) * | 2021-09-30 | 2024-04-09 | 南方英特空调有限公司 | Integrated heat management system of electric automobile |
| CN114571955A (en) * | 2022-03-31 | 2022-06-03 | 美的集团(上海)有限公司 | Thermal management system, control method, control device, program product, storage medium, and vehicle |
| CN114571955B (en) * | 2022-03-31 | 2024-05-03 | 美的集团(上海)有限公司 | Thermal management system, control method, control device, program product, storage medium, and vehicle |
| CN114643833A (en) * | 2022-04-20 | 2022-06-21 | 广州小鹏汽车科技有限公司 | Thermal management system and vehicle |
| CN115056628A (en) * | 2022-06-30 | 2022-09-16 | 中国第一汽车股份有限公司 | Novel hybrid vehicle type thermal management system and vehicle |
| CN115534620A (en) * | 2022-09-23 | 2022-12-30 | 智己汽车科技有限公司 | Electric automobile heat management system, control method thereof and electric automobile |
| CN115534620B (en) * | 2022-09-23 | 2024-05-14 | 智己汽车科技有限公司 | Electric automobile heat management system, control method thereof and electric automobile |
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