CN-122008800-A - Five-way valve heat pump air conditioner with heater connected in series and heat management system

CN122008800ACN 122008800 ACN122008800 ACN 122008800ACN-122008800-A

Abstract

The invention relates to the technical field of heat management systems, in particular to a heater series five-way valve heat pump air conditioner and a heat management system, which comprise a refrigerant circulation system, a cooling liquid circulation system, a first heat management system and a second heat management system; the cooling system comprises a cooling liquid circulation system, a cooling medium circulation system, a first heat management system, a second heat management system and a motor, wherein the cooling medium circulation system is communicated with the cooling liquid circulation system so as to transfer the heating value and the refrigerating capacity of a cooling medium to the cooling liquid circulation system, the first heat management system is communicated with the cooling liquid circulation system and is used for cooling and heating a battery pack, and the second heat management system is communicated with the cooling liquid circulation system and is used for cooling the motor. According to the invention, the cooling liquid outlet end of the water heater is directly connected with the cooling liquid inlet end of the plate heat exchanger in series, so that the energy efficiency ratio of the heat pump air conditioner can be optimized, the running electric power requirement of the water heater is reduced, and the electric energy consumption of the whole vehicle is saved.

Inventors

WEI WENHONG
XIONG HUAN
GUO XIAODONG
YANG XIAORONG
ZHANG ZHIHUI
XIAO FENG

Assignees

江西新电汽车空调系统有限公司

Dates

Publication Date: 20260512
Application Date: 20260409

Claims (10)

1. A heater series five-way valve heat pump air conditioner, comprising: A refrigerant circulation system (A), a cooling liquid circulation system (B), a first thermal management system (C) and a second thermal management system (D); the refrigerant circulation system (A) is communicated with the cooling liquid circulation system (B) so as to transfer the heating value and the refrigerating capacity of the refrigerant to the cooling liquid circulation system (B); The first thermal management system (C) is communicated with the cooling liquid circulation system (B) and is used for cooling and heating the battery pack; The second thermal management system (D) is communicated with the cooling liquid circulation system (B), and the second thermal management system (D) is used for cooling the motor; The second thermal management system (D) is also used to dissipate waste heat in the coolant circulation system (B) and the first thermal management system (C) into air; and, be equipped with water heater (11) and plate heat exchanger (4) in coolant circulation system (B), the coolant outlet end of water heater (11) with the coolant inlet end of plate heat exchanger (4) is direct series connection.
2. The heater-series five-way valve heat pump air conditioner according to claim 1, wherein the refrigerant circulation system (a) comprises an electric compressor (1), a water-cooled condenser with liquid storage tank (2), a first electronic expansion valve (3), the plate heat exchanger (4), an expansion valve with stop valve (5), an evaporator (6), a blower (31), a first refrigerant tee (41) and a second refrigerant tee (42); the exhaust end of the electric compressor (1) is connected with the inlet end of the water-cooled condenser with liquid storage tank (2), the outlet end of the water-cooled condenser with liquid storage tank (2) is connected with the inlet end of the first refrigerant three-way pipe (41), the outlet end of the first refrigerant three-way pipe (41) is connected with the inlet end of the first electronic expansion valve (3), the outlet end of the first electronic expansion valve (3) is connected with the inlet end of the plate heat exchanger (4), and the outlet end of the plate heat exchanger (4) is connected with the inlet end of the second refrigerant three-way pipe (42); The outlet end of the first refrigerant three-way pipe (41) is connected with the inlet end of the expansion valve with a stop valve (5), the outlet end of the expansion valve with the stop valve (5) is connected with the inlet end of the evaporator (6), the outlet end of the evaporator (6) is connected with the inlet end of the second refrigerant three-way pipe (42), and the outlet end of the second refrigerant three-way pipe (42) is connected with the air suction end of the electric compressor (1).
3. The heater serial five-way valve heat pump air conditioner according to claim 2, wherein the cooling liquid circulation system (B) comprises a first electronic water pump (10), a warm air core (12), a three-way water valve (13), a one-way valve (14), a second five-way valve (15), a third five-way valve (16), a first five-way valve (17), the water heater (11), a first water three-way pipe (51), a second water three-way pipe (52), a third water three-way pipe (53), a fourth water three-way pipe (54) and a fifth water three-way pipe (55); the outlet end of the first electronic water pump (10) is connected with the inlet end of the warm air core (12); The outlet end of the warm air core (12) is connected with the end a of the three-way water valve (13); the end b of the three-way water valve (13) is connected with one inlet end of a fourth water three-way pipe (54); the c end of the three-way water valve (13) is connected with one inlet end of the first water three-way pipe (51); The outlet end 1# of the second five-way valve (15) is connected with the inlet end of a second water three-way pipe (52); One outlet end of the second water three-way pipe (52) is connected with the inlet end of the one-way valve (14), and the outlet end of the one-way valve (14) is connected with the other inlet end of the first water three-way pipe (51); the outlet end of the first water tee pipe (51) is connected with the cooling liquid inlet end of the water-cooled condenser with liquid storage tank (2); the outlet end of the cooling liquid of the water-cooled condenser with liquid storage tank (2) is connected with the inlet end 2# of the second five-way valve (15); The other outlet end of the second water three-way pipe (52) is connected with one inlet end of the third water three-way pipe (53); the outlet end 3# of the second five-way valve (15) is connected with one inlet end of a fifth water three-way pipe (55); The other inlet end of the fifth water tee pipe (55) is connected with the outlet end 1# of the first five-way valve (17); the outlet end 5# of the first five-way valve (17) is connected with the inlet end of the water heater (11), and the outlet end of the water heater (11) is connected with the cooling liquid inlet end of the plate heat exchanger (4); The cooling liquid outlet end of the plate heat exchanger (4) is connected with the inlet end 4# of the second five-way valve (15); The outlet end 5# of the second five-way valve (15) is connected with the 2# end of the third five-way valve (16); The 3# end of the third five-way valve (16) is connected with the other inlet end of the third water three-way pipe (53); the outlet end of the third water three-way pipe (53) is connected with the other inlet end of the fourth water three-way pipe (54); the outlet end of the fifth water tee pipe (55) is connected with the inlet end of the first electronic water pump (10); the blower (31) is arranged at the side of the ventilation opening of the warm air core (12) or the evaporator (6).
4. A heater-series five-way valve heat pump air conditioner according to claim 3, characterized in that the first thermal management system (C) comprises a second electronic water pump (23) and a battery pack (22) and a fourth water tee (54); wherein, the outlet end of the second electronic water pump (23) is connected with the inlet end of the battery pack (22); The outlet end of the battery pack (22) is connected with the inlet end 4# of the first five-way valve (17); the outlet end of the fourth water tee pipe (54) is connected with the inlet end of the second electronic water pump (23).
5. A heater-series five-way valve heat pump air conditioner according to claim 4, wherein the second thermal management system (D) comprises a third electronic water pump (21), a low temperature radiator (18), an electronic fan (32), a sixth water tee (56), a water make-up kettle (19), a motor and related components (20) and a seventh water tee (57); the outlet end of the third electronic water pump (21) is connected with the inlet end 2# of the first five-way valve (17); The outlet end 3# of the first five-way valve (17) is connected with the inlet end 4# of the third five-way valve (16); the outlet end 5# of the third five-way valve (16) is connected with the inlet end of the low-temperature radiator (18); The outlet end of the low-temperature radiator (18) is connected with one end of the sixth water tee pipe (56), and the outlet end of the low-temperature radiator (18) is also connected with one end of the water supplementing kettle (19); the other end of the water supplementing kettle (19) is connected with one end of a seventh water three-way pipe (57); the outlet end 1# of the third five-way valve (16) is connected with one end of the sixth water three-way pipe (56); the common outlet end of the sixth water tee (56) is connected with the inlet end of the motor and related elements (20); the outlet end of the motor and the related element (20) is connected with one end of the seventh water three-way pipe (57); The public outlet end of the seventh water tee pipe (57) is connected with the inlet end of the third electronic water pump (21); the electronic fan (32) is disposed on the vent side of the low-temperature radiator (18).
6. A heater-series five-way valve thermal management system for use with a heater-series five-way valve heat pump air conditioner according to any one of claims 1-5, said system comprising: and setting a plurality of working modes according to the requirements of users, and controlling the working states of the five-way valve device heat pump air conditioner and the thermal management system which are connected in series with the plate heat exchanger (4) and the water heater (11) according to the determined different working modes.
7. The heater-series five-way valve thermal management system of claim 6, wherein, in passenger compartment demand, 0 represents no demand or ventilation, 1 represents refrigeration, 2 represents heating, 3 represents refrigeration dehumidification, 4 represents heating dehumidification; in the battery demand, 0 represents no demand, 1 represents uniform temperature, 2 represents heating, and 3 represents cooling; In the requirements of the motor module, 0 represents no requirement, and 1 represents heat dissipation; The motor module requirement is the requirement of the motor, the electric control module, the ACDC module and the DCAC module for integration.
8. The heater serial five-way valve thermal management system of claim 7, wherein the different parameter status combinations according to the passenger compartment demand, battery demand and motor module demand are matched and entered into corresponding preset operating modes.
9. The heater serial five-way valve thermal management system of claim 8, wherein the corresponding predetermined operating modes comprise 1-17'.
10. The heater-series five-way valve heat management system of claim 8, wherein the operating states of a refrigerant circulation system (a), a coolant circulation system (B), a first heat management system (C) and a second heat management system (D) in the heater-series five-way valve heat pump air conditioner and the heat management system are respectively adjusted according to the set 1-17' mode.

Description

Five-way valve heat pump air conditioner with heater connected in series and heat management system Technical Field The invention relates to the technical field of heat management systems, in particular to a heater series five-way valve heat pump air conditioner and a heat management system. Background At present, with the rapid development of new energy automobiles, the thermal management technology of pure electric vehicles is continuously improved, and the application of heat pump air conditioners is increasingly popular. In particular, in recent years, the market has put forward higher demands on energy conservation, high efficiency, wide-temperature-range use capability under low-temperature severe working conditions and passenger cabin heating comfort of an air conditioner and a thermal management system for a vehicle. However, the heat pump air conditioning system in the prior art has obvious technical bottlenecks when dealing with extremely cold environments, the traditional architecture can be used effectively only in the environment temperature above minus 10 ℃, when the whole vehicle is cold started under extremely low temperature working conditions, the traditional system is not only low in energy efficiency ratio and poor in heating effect and the heating rate is slow, and is difficult to meet the comfort requirements of human bodies, but also in order to make up the shortages of low-temperature heating, the traditional scheme is very high in operation electric power requirements of a water heater, so that the vehicle-mounted electric energy is seriously consumed, the vehicle endurance mileage is shortened, and the cost of system part selection is high. Disclosure of Invention In order to make up for the defects, the invention provides a five-way valve heat pump air conditioner with a heater connected in series and a heat management system, which aim to solve the problems of slow heating and low energy efficiency ratio in extremely cold working conditions of the traditional heat pump air conditioner, and reduce the excessive dependence of the system on a high-power water heater, thereby solving the problems of serious electric energy consumption of the whole vehicle and higher hardware cost. In a first aspect, the present invention provides a heater-series five-way valve heat pump air conditioner and thermal management system, comprising, The cooling system comprises a refrigerant circulation system, a cooling liquid circulation system, a first thermal management system and a second thermal management system; The refrigerant circulation system is communicated with the cooling liquid circulation system to transfer the heating value and the refrigerating capacity of the refrigerant to the cooling liquid circulation system; the first thermal management system is communicated with the cooling liquid circulation system and is used for cooling and heating the battery pack; The second thermal management system is communicated with the cooling liquid circulation system and is used for cooling the motor; The second thermal management system is further configured to dissipate waste heat in the coolant circulation system and the first thermal management system into air; And the cooling liquid circulation system is provided with a water heater and a plate heat exchanger, and the cooling liquid outlet end of the water heater is directly connected with the cooling liquid inlet end of the plate heat exchanger in series. Preferably, the refrigerant circulation system comprises an electric compressor, a water-cooled condenser with a liquid storage tank, a first electronic expansion valve, the plate heat exchanger, an expansion valve with a stop valve, an evaporator, a blower, a first refrigerant three-way pipe and a second refrigerant three-way pipe; The exhaust end of the electric compressor is connected with the inlet end of the water-cooled condenser with a liquid storage tank, the outlet end of the water-cooled condenser with a liquid storage tank is connected with the inlet end of the first refrigerant three-way pipe, the outlet end of the first refrigerant three-way pipe is connected with the inlet end of the first electronic expansion valve, the outlet end of the first electronic expansion valve is connected with the inlet end of the plate heat exchanger, and the outlet end of the plate heat exchanger is connected with the inlet end of the second refrigerant three-way pipe; The outlet end of the first refrigerant three-way pipe is connected with the inlet end of the expansion valve with a stop valve, the outlet end of the expansion valve with a stop valve is connected with the inlet end of the evaporator, the outlet end of the evaporator is connected with the inlet end of the second refrigerant three-way pipe, and the outlet end of the second refrigerant three-way pipe is connected with the air suction end of the electric compressor. Preferably, the cooling liquid circulation system comprises a first ele