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CN-121989629-A - Hybrid electric vehicle thermal management architecture and hybrid electric vehicle

CN121989629ACN 121989629 ACN121989629 ACN 121989629ACN-121989629-A

Abstract

The invention relates to the technical field of vehicle thermal management, and particularly discloses a hybrid electric vehicle thermal management framework and a hybrid electric vehicle. Under the heating mode, only the passenger cabin of the vehicle needs to be heated and the heating requirement is small, the engine waste heat of the engine system can be used for heating the passenger cabin of the vehicle, the battery system is not required to be started for heating the passenger cabin of the vehicle, low-voltage power consumption can be effectively reduced, under the cooling mode, the rear air conditioning system can be used for communicating with the passenger cabin of the vehicle to refrigerate the passenger cabin of the vehicle, the front air conditioning system is not required to be started, high-voltage power consumption can be effectively reduced, and the problem that the heat management framework of the hybrid vehicle in the prior art has great negative influence on the endurance mileage in winter at the limit low temperature is solved.

Inventors

  • LI DAILIN

Assignees

  • 一汽解放汽车有限公司

Dates

Publication Date
20260508
Application Date
20260330

Claims (11)

  1. 1. The heat management framework of the hybrid electric vehicle is characterized by comprising a front air conditioning system (1), a rear air conditioning system (2), an engine system (3) and a battery system (4); The hybrid vehicle thermal management architecture has a cooling mode in which the front air conditioning system (1) is selectively communicated with the vehicle passenger compartment and/or the battery system (4) according to the cooling requirements of the vehicle passenger compartment and the battery system (4) so as to cool the vehicle passenger compartment and the battery system (4), and a heating mode in which the rear air conditioning system (2) is communicated with the vehicle passenger compartment so as to cool the vehicle passenger compartment, and the engine system (3) and the battery system (4) are both in on-off communication with the vehicle passenger compartment so as to heat the vehicle passenger compartment.
  2. 2. The hybrid vehicle thermal management architecture of claim 1, wherein the front air conditioning system (1) comprises an air conditioning compressor (11), a first condenser (12), a water cooled evaporator (13) and a first passenger compartment evaporator (14), an outlet of the air conditioning compressor (11) is in communication with an inlet of the first condenser (12), a first outlet of the first condenser (12) is in on-off communication with an inlet of the first passenger compartment evaporator (14), an outlet of the first passenger compartment evaporator (14) is in communication with an inlet of the air conditioning compressor (11), a second outlet of the first condenser (12) is in communication with an inlet of the water cooled evaporator (13), and an outlet of the water cooled evaporator (13) is in communication with an inlet of the air conditioning compressor (11).
  3. 3. The hybrid vehicle thermal management architecture of claim 2, wherein the battery system (4) comprises a power battery (41), a battery water pump (42) and a three-way proportional valve (43), the outlet of the battery water pump (42) is in communication with the heat exchange inlet of the water-cooled evaporator (13), the heat exchange outlet of the water-cooled evaporator (13) is in communication with the inlet of the three-way proportional valve (43), the first outlet of the three-way proportional valve (43) is in communication with the cooling inlet of the power battery (41) in the cooling mode, and the cooling outlet of the power battery (41) is in communication with the inlet of the battery water pump (42).
  4. 4. A hybrid vehicle thermal management architecture according to claim 3, wherein the battery system (4) further comprises a first expansion tank (44), the first expansion tank (44) being arranged on a pipeline communicating the cooling outlet of the power battery (41) with the inlet of the battery water pump (42) and being in on-off communication with the battery water pump (42), the first expansion tank (44) being for replenishing water to the battery water pump (42).
  5. 5. The hybrid vehicle thermal management architecture of claim 4, wherein if the vehicle passenger compartment has a refrigeration demand, the first outlet of the first condenser (12) is in communication with the inlet of the first passenger compartment evaporator (14), the first expansion tank (44) is disconnected from the battery water pump (42), if the battery system (4) has a refrigeration demand, the first outlet of the first condenser (12) is disconnected from the inlet of the first passenger compartment evaporator (14), the first expansion tank (44) is in communication with the battery water pump (42), and if the vehicle passenger compartment and the battery system (4) have a refrigeration demand, the first outlet of the first condenser (12) is in communication with the inlet of the first passenger compartment evaporator (14), and the first expansion tank (44) is in communication with the battery water pump (42).
  6. 6. A hybrid vehicle thermal management architecture according to claim 3, wherein the battery system (4) further comprises a water-water heat exchanger (45), a fuel oil heater (46) and a first passenger compartment warm air core (47), in the heating mode, an inlet of the water-water heat exchanger (45) is in communication with a second outlet of the three-way proportional valve (43), an outlet of the water-water heat exchanger (45) is in communication with an inlet of the power battery (41), a heat exchange outlet of the water-water heat exchanger (45) is in communication with an inlet of the fuel oil heater (46), and an outlet of the fuel oil heater (46) is in communication with a heat exchange inlet of the first passenger compartment warm air core (47), the water-water heat exchanger (45).
  7. 7. The hybrid vehicle thermal management architecture of claim 1, wherein the engine system (3) comprises an engine block (31), a high temperature radiator (32) and an intercooler (33), in the cooling mode, a water pump outlet of the engine block (31) is in communication with an inlet of the high temperature radiator (32), an outlet of the high temperature radiator (32) is in communication with a water pump proximal port of the engine block (31), an exhaust outlet of the engine block (31) is in communication with an inlet of the intercooler (33), and an outlet of the intercooler (33) is in communication with an exhaust inlet of the engine block (31).
  8. 8. The hybrid vehicle thermal management architecture of claim 7, wherein the engine system (3) further comprises a second passenger compartment warm air core (34), the water outlet of the engine body (31) is in communication with the water inlet of the second passenger compartment warm air core (34) in the heating mode, and the water outlet of the second passenger compartment warm air core (34) is in communication with the water inlet of the engine body (31).
  9. 9. The hybrid vehicle thermal management architecture of claim 1, further comprising a front motor system (5) and a rear motor system (6) in the cooling mode, the front motor system (5) comprising a first motor (51), a first water pump (52) and a first medium temperature radiator (53), an outlet of the first water pump (52) being in communication with a cooling inlet of the first motor (51), a cooling outlet of the first motor (51) being in communication with an inlet of the first medium temperature radiator (53), an outlet of the first medium temperature radiator (53) being in communication with an inlet of the first motor (51), the rear motor system (6) comprising a second motor (61), a second water pump (62) and a second medium temperature radiator (63), an outlet of the second water pump (62) being in communication with a cooling inlet of the second motor (61), a cooling outlet of the second motor (61) being in communication with an inlet of the second medium temperature radiator (63), an outlet of the second motor (63) being in communication with an inlet of the second medium temperature radiator (63).
  10. 10. The hybrid vehicle thermal management architecture of claim 1, wherein the rear air conditioning system (2) includes an engine compressor (21), a second condenser (22), and a second passenger compartment evaporator (23), an outlet of the engine compressor (21) being in communication with an inlet of the second condenser (22), an outlet of the second condenser (22) being in on-off communication with an inlet of the second passenger compartment evaporator (23), an outlet of the second passenger compartment evaporator (23) being in communication with an inlet of the engine compressor (21).
  11. 11. A hybrid vehicle comprising the hybrid vehicle thermal management architecture of any one of claims 1-10.

Description

Hybrid electric vehicle thermal management architecture and hybrid electric vehicle Technical Field The invention relates to the technical field of vehicle thermal management, in particular to a hybrid electric vehicle thermal management framework and a hybrid electric vehicle. Background At present, a hybrid vehicle is generally provided with a motor and an engine dual-drive system, the engine and the motor work cooperatively, the optimal configuration of a power system is realized, the load of the engine is obviously reduced, and thus, the fuel consumption is reduced. The hybrid vehicle would place the motor in a battery cooling circuit for ease of plumbing, the battery circuit being indirectly cooled by refrigerant in a Chiller (chiller) heat exchanger. Under low temperature environment, when the battery needs to be heated, the temperature of the motor cooling loop antifreeze liquid can be driven to rise after rising, but when the temperature of the battery is high to the upper limit of the allowable temperature, the compressor and the fan need to be started for cooling, at the moment, the problems of energy consumption waste and noise can occur, and once the waterway leaks, the whole vehicle is easy to paralysis. The power battery and the engine are core power sources of the hybrid electric vehicle, the problem of the attenuation of the endurance mileage of the power battery in winter is not negligible, and besides the reduction of the energy storage capacity of the battery, the heating requirement in winter is also an important factor for influencing the endurance mileage. In the prior art, in order to meet the heating requirement, the conventional positive temperature coefficient electric heater is more applied mainly because the conventional positive temperature coefficient electric heater has the characteristics of high heating rate, simple control and high heat generation, but the conventional electric heater cannot adapt to extremely cold weather and has higher cost. Therefore, there is a need to design a hybrid vehicle thermal management architecture and a hybrid vehicle to solve the above problems. Disclosure of Invention The invention aims to provide a hybrid electric vehicle thermal management framework and a hybrid electric vehicle, which are used for solving the problems of low use reliability caused by larger negative influence on the endurance mileage due to heating of the hybrid electric vehicle thermal management framework in winter at a limit low temperature in the prior art. In one aspect, the invention provides a hybrid vehicle thermal management architecture which comprises a front air conditioning system, a rear air conditioning system, an engine system and a battery system, wherein the hybrid vehicle thermal management architecture is provided with a refrigerating mode and a heating mode, the front air conditioning system is selectively communicated with a vehicle passenger cabin and/or the battery system according to the refrigerating requirement of the vehicle passenger cabin and the battery system so as to refrigerate the vehicle passenger cabin and the battery system, the rear air conditioning system is communicated with the vehicle passenger cabin so as to refrigerate the vehicle passenger cabin, and the engine system and the battery system are both communicated with the vehicle passenger cabin in the heating mode so as to heat the vehicle passenger cabin in an on-off mode. As an alternative technical scheme of the hybrid electric vehicle thermal management architecture, the front air conditioning system comprises an air conditioning compressor, a first condenser, a water-cooling evaporator and a first passenger cabin evaporator, wherein an outlet of the air conditioning compressor is communicated with an inlet of the first condenser, a first outlet of the first condenser is communicated with an inlet of the first passenger cabin evaporator in an on-off manner, an outlet of the first passenger cabin evaporator is communicated with the inlet of the air conditioning compressor, a second outlet of the first condenser is communicated with an inlet of the water-cooling evaporator, and an outlet of the water-cooling evaporator is communicated with the inlet of the air conditioning compressor. As an optional technical scheme of the heat management architecture of the hybrid electric vehicle, the battery system comprises a power battery, a battery water pump and a three-way proportional valve, wherein an outlet of the battery water pump is communicated with a heat exchange inlet of the water-cooling evaporator, a heat exchange outlet of the water-cooling evaporator is communicated with an inlet of the three-way proportional valve, a first outlet of the three-way proportional valve is communicated with a cooling inlet of the power battery in a refrigerating mode, and a cooling outlet of the power battery is communicated with an inlet of the battery water pump. As an optional technical