CN211592161U - Whole car thermal management system of integrated indirect heat pump for electric automobile - Google Patents
Whole car thermal management system of integrated indirect heat pump for electric automobile Download PDFInfo
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- CN211592161U CN211592161U CN201922014228.7U CN201922014228U CN211592161U CN 211592161 U CN211592161 U CN 211592161U CN 201922014228 U CN201922014228 U CN 201922014228U CN 211592161 U CN211592161 U CN 211592161U
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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
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- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The utility model provides a whole vehicle heat management system of an integrated indirect heat pump for an electric vehicle, which comprises a refrigerant loop, a battery pack liquid cooling loop, a motor heat dissipation loop and a passenger compartment heating coolant loop; the following functions are also realized: the heat pump heating and dehumidifying of the passenger compartment are carried out, meanwhile, the battery is cooled, the indirect heat pump heats the battery, the indirect heat pump heats the passenger compartment and the battery simultaneously, and the battery, the motor and the vehicle-mounted power component are subjected to heat recovery and then are heated by the heat pump in the passenger compartment. The utility model makes full use of the heat productivity of the motor and the vehicle-mounted power component to provide heat for the heat pump system, thereby improving the heat efficiency of the whole vehicle; and when the temperature is low at-10 to 0 ℃, an indirect heat pump is adopted to supply heat to the battery, so that the heating power consumption is reduced.
Description
Technical Field
The utility model relates to an electric automobile field specifically, relates to an electric automobile is with whole car thermal management system of integrated indirect heat pump.
Background
At present, the influence of adverse factors such as continuation of journey, safety and policy subsidy and grade retreat of the electric automobile is caused, the cost and the energy consumption of a whole automobile heat management system face severe challenges, the requirement of the whole automobile heat management system with high efficiency, safety and low integration cost is obvious, and the whole automobile heat management system is a temperature control system integrating a battery, a motor and a passenger cabin.
The existing electric vehicle heat management technology mainly comprises the following steps: the passenger compartment cooling and heating air conditioner, the battery cooling and heating, and the motor and the vehicle-mounted power component cooling. The mainstream technology of battery cooling mainly adopts liquid cooling (the liquid cooling of the battery is that after a low-temperature refrigerant exchanges heat with cooling liquid, the battery is cooled through the cooling liquid), and the heating usually adopts WPTC (high temperature gas cooled condenser) to supply heat to the battery; the heat dissipation of the motor and the vehicle-mounted power component is mainly realized by circulating cooling liquid to flow through a heat dissipation water tank, the heating of a passenger compartment mainly adopts two modes of an APTC (active heat transfer) and a direct heat pump or a WPTC and an indirect heat pump, wherein the direct heat pump directly supplies heat by adopting a high-temperature high-pressure refrigerant, the indirect heat pump heats low-temperature cooling liquid by adopting a high-temperature high-pressure refrigerant, the heating is realized by utilizing the heated cooling liquid, the APTC is a positive temperature coefficient thermistor for heating air, and the WPTC is a positive temperature coefficient thermistor for heating the cooling liquid.
The prior art has at least the following defects:
(1) at low temperature, the heat productivity of the motor and the vehicle-mounted power component is not fully utilized, and the heat efficiency of the whole vehicle still has a space for improving;
(2) WPTC is adopted for heating the battery, and heating power consumption is large;
(3) when the passenger compartment needs heating and dehumidifying and the battery needs cooling, the passenger compartment needs heating through APTC or WPTC, and therefore heating power consumption is large.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims at providing a whole vehicle heat management system of an integrated indirect heat pump for an electric vehicle, which makes full use of the heat productivity of a motor and a vehicle-mounted power component to provide heat for a heat pump system, thereby improving the heat efficiency of the whole vehicle; when the temperature is low at-10 to 0 ℃, an indirect heat pump is adopted to supply heat to the battery, so that the heating power consumption is reduced; the following functions are realized: the heat pump heating and dehumidifying of the passenger compartment are carried out, meanwhile, the battery is cooled, the indirect heat pump heats the battery, the indirect heat pump heats the passenger compartment and the battery simultaneously, and the battery, the motor and the vehicle-mounted power component are subjected to heat recovery and then are heated by the heat pump in the passenger compartment.
According to one aspect of the utility model, a whole vehicle heat management system of an integrated indirect heat pump for an electric vehicle is provided, which comprises a refrigerant loop (1), a battery pack liquid cooling loop (2), a motor heat dissipation loop (3) and a passenger compartment heating coolant loop (4);
the battery pack liquid cooling loop (2) comprises a second heat exchanger (21), a third heat exchanger (22), a battery pack (23) and a second electronic water pump (24) which are sequentially connected in series, and the outlet end of the second electronic water pump (24) is connected with the inlet end of the second heat exchanger (21) to form the battery pack liquid cooling loop (2);
the motor heat dissipation loop (3) comprises a driving motor and a vehicle-mounted power component (31), a first three-way water valve (32), a heat dissipation water tank (33) and a third electronic water pump (34) which are sequentially connected in series, and the outlet end of the third electronic water pump (34) is connected with the driving motor and the inlet end of the vehicle-mounted power component (31) to form the motor heat dissipation loop (3);
the refrigerant loop (1) comprises a compressor (11), a water-cooled condenser (13), a first electronic expansion valve (14), an outdoor heat exchanger (17), a third stop valve (110), a first heat exchanger (111) and a gas-liquid separator (112) which are sequentially connected in series, and further comprises an air-conditioning box assembly (12), a first stop valve (15), a second stop valve (16), a one-way valve (18), a second electronic expansion valve (19) and a second heat exchanger (21); a condensing fan (35) is arranged on one side of the outdoor heat exchanger (17), the air-conditioning box assembly (12) comprises an air blower (121), an evaporator (122), a warm air core body (123), an electromagnetic expansion valve (124) and a temperature air door (125), the air blower (121) is arranged on one side of the evaporator (122), the warm air core body (123) is arranged on the other side of the evaporator (122), the temperature air door (125) is arranged between the evaporator (122) and the warm air core body (123), the inlet end of the electromagnetic expansion valve (124) is connected with the inlet end of the third stop valve (110), and the outlet end of the electromagnetic expansion valve is connected with the evaporator (122) and then is connected with the first heat exchanger (111); the first stop valve (15) is connected with the first electronic expansion valve (14) in parallel, the second stop valve (16) and the one-way valve (18) are connected with the outdoor heat exchanger (17) in parallel, the inlet end of the second electronic expansion valve (19) is connected with the outlet end of the one-way valve (18), and the outlet end of the second electronic expansion valve is connected with the outlet end of the third stop valve (110) after being connected with the second heat exchanger (21); the outlet end of the gas-liquid separator (112) is connected with the inlet end of the compressor (11) to form a refrigerant loop (1);
passenger cabin heats coolant liquid return circuit (4) including water-cooled condenser (13), WPTC (41), the three-way water valve of second (42), warm braw core (123) and first electronic water pump (43) that establish ties in proper order, the three-way water valve of second (42) is adjusted to a and b mouth and 100% switches on, the exit end of first electronic water pump (43) and the entrance connection of water-cooled condenser (13) constitute passenger cabin heats coolant liquid return circuit (4).
Preferably, the first heat exchanger (111), the second heat exchanger (21) and the third heat exchanger (22) are provided with four ports; the first inlet of the first heat exchanger (111) is connected with the outlet ends of the third heat exchanger (22), the third stop valve (110) and the evaporator (122), the first outlet is connected with the inlet end of the gas-liquid separator (112), the second inlet is connected with the port b of the first three-way water valve (32), and the second outlet is connected with the inlet end of the radiating water tank (33); the inlet I of the second heat exchanger (21) is connected with the outlet end of the second electronic water pump (24), the outlet I of the second heat exchanger is connected with the inlet I of the third heat exchanger (22), the inlet II of the second heat exchanger is connected with the port c of the second three-way water valve (42), and the outlet II of the second heat exchanger is connected with the inlet end of the first electronic water pump (43); the first inlet of the third heat exchanger (22) is connected with the first outlet of the second heat exchanger (21), the first outlet is connected with the inlet end of the battery pack (23), the second inlet is connected with the outlet end of the second electronic expansion valve (19), and the second outlet is connected with the first inlet of the first heat exchanger (111);
the water-cooled condenser (13) is provided with four ports, wherein an inlet I is connected with the outlet end of the compressor (11), an outlet I is connected with the inlet ends of the first electronic expansion valve (14), the first stop valve (15) and the second stop valve (16), an inlet II is connected with the outlet end of the first electronic water pump (43), and an outlet II is connected with the inlet end of the WPTC (41);
the first three-way water valve (32) and the second three-way water valve (42) are of a one-inlet two-outlet type, an a port of the first three-way water valve (32) is connected with the outlet end of the driving motor and the vehicle-mounted power component (31), a b port of the first three-way water valve is connected with a second inlet of the first heat exchanger (111), and a c port of the first three-way water valve is connected with the inlet end of the heat dissipation water tank (33); and a port a of the second three-way water valve (42) is connected with the outlet end of the WPTC (41), a port b is connected with the inlet end of the warm air core body (123), and a port c is connected with a second inlet of the second heat exchanger (21).
Preferably, the refrigerant circuits (1) are connected by a refrigerant line, which is filled with refrigerant; the battery pack liquid cooling loop (2) is connected through a first water pipe, and first cooling liquid is filled in the first water pipe; the passenger compartment heating coolant circuit (4) is connected by a second water pipe filled with a second coolant; the motor heat dissipation loop (3) is connected through a third water pipe, and a third cooling liquid is filled in the third water pipe.
Preferably, when the first electronic expansion valve (14) and the electromagnetic expansion valve (124) in the refrigerant circuit (1) are in a conducting state and the second stop valve (16), the second electronic expansion valve (19), the first stop valve (15) and the third stop valve (110) are in a closed state, a passenger compartment heating and dehumidifying circuit is formed;
a battery cooling circuit is configured in such a manner that a first electronic expansion valve (14) and a first stop valve (15) in the refrigerant circuit (1) are in a conducting state, the opening degree of the second electronic expansion valve (19) is controlled, and a second stop valve (16), an electromagnetic expansion valve (124), and a third stop valve (110) are in a closed state;
the first electronic expansion valve (14), the first stop valve (15) and the third stop valve (110) in the refrigerant circuit (1) are in a closed state, the opening degree of the second electronic expansion valve (19) is controlled, the second stop valve (16) and the electromagnetic expansion valve (124) are in a conducting state, and the passenger compartment heats and dehumidifies and simultaneously cools the battery.
Preferably, the compressor (11), the water-cooled condenser (13), the first electronic expansion valve (14), the outdoor heat exchanger (17), the third stop valve (110), the first heat exchanger (111) and the gas-liquid separator (112) are sequentially connected in series through refrigerant pipelines, and the outlet end of the gas-liquid separator (112) is connected with the inlet end of the compressor (11), so as to form a passenger compartment heat pump heating loop;
the water-cooled condenser (13), the WPTC (41), the second three-way water valve (42), the second heat exchanger (21) and the first electronic water pump (43) are sequentially connected through a second water pipe, the second three-way water valve (42) is adjusted to be a port a and a port c and is conducted by 100%, the outlet end of the first electronic water pump (43) is connected with the inlet end of the water-cooled condenser (13), and a first battery heating loop is formed;
the second heat exchanger (21), the third heat exchanger (22), the battery pack (23) and the second electronic water pump (24) are sequentially connected through a first water pipe, and the outlet end of the second electronic water pump (24) is connected with the inlet end of the second heat exchanger (21) to form a second battery heating loop;
the second cooling liquid in the battery heating first loop exchanges heat with the refrigerant in the passenger compartment heat pump heating loop through the water-cooled condenser (13), and the first cooling liquid in the battery heating second loop exchanges heat with the second cooling liquid in the battery heating first loop through the second heat exchanger (21) in a convection mode to form an indirect heat pump heating battery loop, so that the aim of heating the battery by the indirect heat pump is fulfilled.
Preferably, the second three-way water valve (42) is used for adjusting and controlling the flow distribution of the second cooling liquid, one part of the second cooling liquid is circulated according to a first circuit heated by a battery, the other part of the second cooling liquid flows into the warm air core body (123) through a water pipe, and a temperature damper (125) in the air-conditioning box assembly (12) is adjusted to be full hot, so that an indirect heat pump is formed and simultaneously heats the passenger compartment and the battery circuit, and the purpose that the indirect heat pump simultaneously heats the passenger compartment and the battery is achieved.
Preferably, the passenger compartment heat pump heating circuit constitutes a heat pump first circuit;
the compressor (11), the water-cooled condenser (13), the first electronic expansion valve (14), the outdoor heat exchanger (17), the second electronic expansion valve (19), the third heat exchanger (22), the first heat exchanger (111) and the gas-liquid separator (112) are sequentially connected in series through refrigerant pipelines, the second electronic expansion valve (19) is adjusted to be in a maximum conduction state, and the outlet end of the gas-liquid separator (112) is connected with the inlet end of the compressor (11) to form a second heat pump loop;
the driving motor and vehicle-mounted power component (31), the first three-way water valve (32), the first heat exchanger (111) and the third electronic water pump (34) are sequentially connected in series through a third water pipe, the first three-way water valve (32) is adjusted to be a port a and a port b and is conducted to the maximum, the outlet end of the third electronic water pump (34) is connected with the driving motor and the inlet end of the vehicle-mounted power component (31), and a heat recovery cooling liquid loop of the motor and the vehicle-mounted power component is formed;
the low-temperature refrigerant in the first loop of the heat pump exchanges heat with third cooling liquid in the heat recovery loop of the motor and the vehicle-mounted power component in a convection manner through a first heat exchanger (111), so that heat in the motor and the vehicle-mounted power component is recovered; the low-temperature refrigerant in the second loop of the heat pump exchanges heat with the first cooling liquid in the liquid cooling loop (2) of the battery pack through a third heat exchanger (22) in a convection manner, so that the heat in the battery is recovered; the low-temperature refrigerant in the second loop of the heat pump can exchange heat with the first cooling liquid in the battery pack liquid cooling loop (2), the motor and the third cooling liquid in the vehicle-mounted power component heat recovery loop through the third heat exchanger (22) and the first heat exchanger (111) respectively, so that the heat in the battery and the heat in the motor and the vehicle-mounted power component are further recovered, the heat recovery economy is improved, and the purpose of heating the battery, the motor and the vehicle-mounted power component through the heat recovery of the battery and the heat pump of the vehicle-mounted power component to the passenger compartment is achieved.
Preferably, the first heat exchanger (111), the second heat exchanger (21) and the third heat exchanger (22) are all plate heat exchangers.
Preferably, the third heat exchanger (22) is used for cooling the battery, the second heat exchanger (21) is used for heating the battery, and the first heat exchanger (111) is used for exchanging heat with waste heat.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) the utility model relates to an electric automobile is with whole car thermal management system of integrated indirect heat pump realizes that the function mainly has: the heat pump heating and dehumidifying of the passenger compartment are carried out, meanwhile, the battery cooling and the indirect heat pump heating the battery are carried out, the indirect heat pump simultaneously heats the passenger compartment and the battery, the motor and the vehicle-mounted power component, and the heat is recovered to the heat pump heating of the passenger compartment;
(2) the utility model relates to a whole car thermal management system of integrated indirect heat pump for electric automobile makes full use of the calorific capacity of motor and vehicle-mounted power part and provides heat for the heat pump system, and the calorific capacity of motor and vehicle-mounted power part makes full use of, and then promotes whole car thermal efficiency;
(3) the utility model relates to a whole car heat management system of integrated indirect heat pump for electric automobile, when the low temperature condition of-10 ~ 0 ℃, adopt indirect heat pump for battery heat supply, reduce the heating consumption;
(4) the utility model relates to an integrated indirect heat pump's whole car thermal management system for electric automobile heats when dehumidification needs the battery cooling simultaneously in passenger cabin, and passenger cabin heats and adopts the heat pump return circuit, reduces the consumption under this demand
(5) The utility model relates to a whole vehicle heat management system of an integrated indirect heat pump for an electric vehicle, which has simple system, ingenious design and obvious effect;
(6) the utility model relates to an electric automobile is with whole car thermal management system of integrated indirect heat pump, nimble changeable satisfies multiple user demand, and the practicality is strong, is fit for promoting on a large scale.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a connection schematic diagram of a whole vehicle thermal management system of an integrated indirect heat pump for an electric vehicle.
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
Examples
The embodiment provides a whole vehicle thermal management system of an integrated indirect heat pump for an electric vehicle, the structure of which is shown in the attached drawing 1 in detail: comprises a refrigerant loop 1, a battery pack liquid cooling loop 2, a motor heat dissipation loop 3 and a passenger compartment heating and cooling liquid loop 4;
the battery pack liquid cooling loop 2 comprises a second heat exchanger 21, a third heat exchanger 22, a battery pack 23 and a second electronic water pump 24 which are sequentially connected in series, and the outlet end of the second electronic water pump 24 is connected with the inlet end of the second heat exchanger 21 to form the battery pack liquid cooling loop 2;
the motor heat dissipation loop 3 comprises a driving motor and vehicle-mounted power component 31, a first three-way water valve 32, a heat dissipation water tank 33 and a third electronic water pump 34 which are sequentially connected in series, wherein the outlet end of the third electronic water pump 34 is connected with the inlet ends of the driving motor and the vehicle-mounted power component 31 to form the motor heat dissipation loop 3;
the refrigerant loop 1 comprises a compressor 11, a water-cooled condenser 13, a first electronic expansion valve 14, an outdoor heat exchanger 17, a third stop valve 110, a first heat exchanger 111 and a gas-liquid separator 112 which are sequentially connected in series, and further comprises an air-conditioning box assembly 12, a first stop valve 15, a second stop valve 16, a one-way valve 18, a second electronic expansion valve 19 and a second heat exchanger 21; a condensing fan 35 is arranged on one side of the outdoor heat exchanger 17, the air conditioning box assembly 12 comprises an air blower 121, an evaporator 122, a warm air core 123, an electromagnetic expansion valve 124 and a temperature air door 125, the air blower 121 is arranged on one side of the evaporator 122, the warm air core 123 is arranged on the other side of the evaporator 122, the temperature air door 125 is arranged between the evaporator 122 and the warm air core 123, the inlet end of the electromagnetic expansion valve 124 is connected with the inlet end of the third stop valve 110, and the outlet end of the electromagnetic expansion valve is connected with the evaporator 122 and then connected with the first heat exchanger 111; the first stop valve 15 is connected in parallel with the first electronic expansion valve 14, the second stop valve 16 and the one-way valve 18 are connected in parallel with the outdoor heat exchanger 17, the inlet end of the second electronic expansion valve 19 is connected with the outlet end of the one-way valve 18, and the outlet end of the second electronic expansion valve is connected with the outlet end of the third stop valve 110 after being connected with the second heat exchanger 21; the outlet end of the gas-liquid separator 112 is connected with the inlet end of the compressor 11 to form a refrigerant loop 1;
passenger cabin heats coolant liquid return circuit 4 and includes water-cooled condenser 13, WPTC41, the three-way water valve 42 of second, warm braw core 123 and the first electronic water pump 43 that establish ties in proper order, the three-way water valve 42 of second is adjusted to a and b mouth and 100% and is switched on, the exit end of first electronic water pump 43 and the entrance connection of water-cooled condenser 13 constitute passenger cabin heats coolant liquid return circuit 4.
Further, the first heat exchanger 111, the second heat exchanger 21 and the third heat exchanger 22 all have four ports; the first inlet of the first heat exchanger 111 is connected with the outlet ends of the third heat exchanger 22, the third stop valve 110 and the evaporator 122, the first outlet is connected with the inlet end of the gas-liquid separator 112, the second inlet is connected with the b port of the first three-way water valve 32, and the second outlet is connected with the inlet end of the radiator tank 33; the first inlet of the second heat exchanger 21 is connected with the outlet end of the second electronic water pump 24, the first outlet is connected with the first inlet of the third heat exchanger 22, the second inlet is connected with the c port of the second three-way water valve 42, and the second outlet is connected with the inlet end of the first electronic water pump 43; the first inlet of the third heat exchanger 22 is connected with the first outlet of the second heat exchanger 21, the first outlet is connected with the inlet end of the battery pack 23, the second inlet is connected with the outlet end of the second electronic expansion valve 19, and the second outlet is connected with the first inlet of the first heat exchanger 111;
the water-cooled condenser 13 has four ports, wherein an inlet one is connected with the outlet end of the compressor 11, an outlet one is connected with the inlet ends of the first electronic expansion valve 14, the first stop valve 15 and the second stop valve 16, an inlet two is connected with the outlet end of the first electronic water pump 43, and an outlet two is connected with the inlet end of the WPTC 41;
the first three-way water valve 32 and the second three-way water valve 42 are of a one-inlet two-outlet type, an a port of the first three-way water valve 32 is connected with the outlet end of the driving motor and the outlet end of the vehicle-mounted power component 31, a b port of the first three-way water valve is connected with a second inlet of the first heat exchanger 111, and a c port of the first three-way water valve is connected with the inlet end of the heat dissipation water tank 33; and a port a of the second three-way water valve 42 is connected with the outlet end of the WPTC41, a port b of the second three-way water valve is connected with the inlet end of the warm air core body 123, and a port c of the second three-way water valve is connected with the second inlet of the second heat exchanger 21.
Further, the refrigerant circuits 1 are connected by refrigerant lines, which are filled with refrigerant; the battery pack liquid cooling loop 2 is connected through a first water pipe, and the first water pipe is filled with first cooling liquid; the passenger compartment heating coolant circuit 4 is connected by a second water pipe filled with a second coolant; the motor heat dissipation loop 3 is connected through a third water pipe, and a third cooling liquid is filled in the third water pipe.
Further, when the first electronic expansion valve 14 and the electromagnetic expansion valve 124 in the refrigerant circuit 1 are in a conducting state, and the second stop valve 16, the second electronic expansion valve 19, the first stop valve 15 and the third stop valve 110 are in a closed state, a passenger compartment heating and dehumidifying circuit is formed;
a battery cooling circuit is configured in a case where the first electronic expansion valve 14 and the first stop valve 15 in the refrigerant circuit 1 are in a conducting state, the opening degree of the second electronic expansion valve 19 is controlled, and the second stop valve 16, the electromagnetic expansion valve 124, and the third stop valve 110 are in a closed state;
the first electronic expansion valve 14, the first stop valve 15, and the third stop valve 110 in the refrigerant circuit 1 are in a closed state, the opening degree of the second electronic expansion valve 19 is controlled, and the second stop valve 16 and the electromagnetic expansion valve 124 are in a conductive state, and the passenger compartment is heated and dehumidified while the battery is cooled.
Further, the compressor 11, the water-cooled condenser 13, the first electronic expansion valve 14, the outdoor heat exchanger 17, the third stop valve 110, the first heat exchanger 111, and the gas-liquid separator 112 are sequentially connected in series through a refrigerant pipeline, and an outlet end of the gas-liquid separator 112 is connected with an inlet end of the compressor 11, so as to form a passenger compartment heat pump heating circuit;
the water-cooled condenser 13, the WPTC41, the second three-way water valve 42, the second heat exchanger 21 and the first electronic water pump 43 are sequentially connected through a second water pipe, the second three-way water valve 42 is adjusted to be a port a and a port c and is conducted by 100%, the outlet end of the first electronic water pump 43 is connected with the inlet end of the water-cooled condenser 13, and a first battery heating loop is formed;
the second heat exchanger 21, the third heat exchanger 22, the battery pack 23 and the second electronic water pump 24 are sequentially connected through a first water pipe, and the outlet end of the second electronic water pump 24 is connected with the inlet end of the second heat exchanger 21 to form a second battery heating loop;
the second cooling liquid in the battery heating first loop exchanges heat with the refrigerant in the passenger compartment heat pump heating loop through the water-cooled condenser 13 in a convection manner, the first cooling liquid in the battery heating second loop exchanges heat with the second cooling liquid in the battery heating first loop in a convection manner through the second heat exchanger 21 in the convection manner, so that an indirect heat pump heating battery loop is formed, and the purpose of heating the battery by the indirect heat pump is achieved.
Further, the second three-way water valve 42 regulates and controls the flow distribution of the second cooling liquid, a part of the second cooling liquid circulates according to the battery heating first loop, the other part of the second cooling liquid flows into the warm air core 123 through a water pipe, and the temperature damper 125 in the air-conditioning box assembly 12 is regulated to full heat, so that an indirect heat pump is formed to simultaneously heat the passenger compartment and the battery loop, and the purpose that the indirect heat pump simultaneously heats the passenger compartment and the battery is achieved.
Further, the passenger compartment heat pump heating circuit forms a heat pump first circuit;
the compressor 11, the water-cooled condenser 13, the first electronic expansion valve 14, the outdoor heat exchanger 17, the second electronic expansion valve 19, the third heat exchanger 22, the first heat exchanger 111 and the gas-liquid separator 112 are sequentially connected in series through refrigerant pipelines, the second electronic expansion valve 19 is adjusted to be in a maximum conduction state, and the outlet end of the gas-liquid separator 112 is connected with the inlet end of the compressor 11 to form a second heat pump loop;
the driving motor and vehicle-mounted power component 31, the first three-way water valve 32, the first heat exchanger 111 and the third electronic water pump 34 are sequentially connected in series through a third water pipe, the first three-way water valve 32 is adjusted to the ports a and b and is conducted to the maximum, the outlet end of the third electronic water pump 34 is connected with the driving motor and the inlet end of the vehicle-mounted power component 31, and a heat recovery cooling liquid loop of the motor and the vehicle-mounted power component is formed;
the low-temperature refrigerant in the first heat pump loop exchanges heat with third cooling liquid in the heat recovery loop of the motor and the vehicle-mounted power component through the first heat exchanger 111 in a convection manner, so that heat in the motor and the vehicle-mounted power component is recovered; the low-temperature refrigerant in the second loop of the heat pump exchanges heat with the first cooling liquid in the liquid cooling loop 2 of the battery pack through a third heat exchanger 22 in a convection manner, so that the heat in the battery is recovered; the low-temperature refrigerant in the second loop of the heat pump can exchange heat with the first cooling liquid in the liquid cooling loop 2 of the battery pack, the motor and the third cooling liquid in the heat recovery loop of the vehicle-mounted power component through the third heat exchanger 22 and the first heat exchanger 111 simultaneously, so that the heat in the battery and the heat in the motor and the vehicle-mounted power component are further recovered, the heat recovery economy is improved, and the purpose of heat recovery of the battery, the motor and the vehicle-mounted power component to the passenger compartment by the heat pump is achieved.
Further, the first heat exchanger 111, the second heat exchanger 21, and the third heat exchanger 22 are all plate heat exchangers.
Further, the third heat exchanger 22 is for battery cooling, the second heat exchanger 21 is for battery heating, and the first heat exchanger 111 is for waste heat exchange.
The embodiment has the following beneficial effects:
(1) the realization functions mainly comprise: the heat pump heating and dehumidifying of the passenger compartment are carried out, meanwhile, the battery cooling and the indirect heat pump heating the battery are carried out, the indirect heat pump simultaneously heats the passenger compartment and the battery, the motor and the vehicle-mounted power component, and the heat is recovered to the heat pump heating of the passenger compartment;
(2) the heat productivity of the motor and the vehicle-mounted power component is fully utilized to provide heat for the heat pump system, and the heat productivity of the motor and the vehicle-mounted power component is fully utilized, so that the heat efficiency of the whole vehicle is improved;
(3) under the condition of low temperature of-10-0 ℃, an indirect heat pump is adopted to supply heat to the battery, so that the heating power consumption is reduced;
(4) when the passenger compartment is heated and dehumidified and the battery is required to be cooled, the passenger compartment is heated by adopting the heat pump loop, so that the power consumption under the requirement is reduced
(5) The system is simple, the design is ingenious, and the effect is obvious;
(6) nimble changeable satisfies multiple user demand, and the practicality is strong, is fit for promoting on a large scale.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (9)
1. The whole vehicle heat management system of the integrated indirect heat pump for the electric vehicle is characterized by comprising a refrigerant loop (1), a battery pack liquid cooling loop (2), a motor heat dissipation loop (3) and a passenger compartment heating coolant loop (4);
the battery pack liquid cooling loop (2) comprises a second heat exchanger (21), a third heat exchanger (22), a battery pack (23) and a second electronic water pump (24) which are sequentially connected in series, and the outlet end of the second electronic water pump (24) is connected with the inlet end of the second heat exchanger (21) to form the battery pack liquid cooling loop (2);
the motor heat dissipation loop (3) comprises a driving motor and a vehicle-mounted power component (31), a first three-way water valve (32), a heat dissipation water tank (33) and a third electronic water pump (34) which are sequentially connected in series, and the outlet end of the third electronic water pump (34) is connected with the driving motor and the inlet end of the vehicle-mounted power component (31) to form the motor heat dissipation loop (3);
the refrigerant loop (1) comprises a compressor (11), a water-cooled condenser (13), a first electronic expansion valve (14), an outdoor heat exchanger (17), a third stop valve (110), a first heat exchanger (111) and a gas-liquid separator (112) which are sequentially connected in series, and further comprises an air-conditioning box assembly (12), a first stop valve (15), a second stop valve (16), a one-way valve (18), a second electronic expansion valve (19) and a second heat exchanger (21); a condensing fan (35) is arranged on one side of the outdoor heat exchanger (17), the air-conditioning box assembly (12) comprises an air blower (121), an evaporator (122), a warm air core body (123), an electromagnetic expansion valve (124) and a temperature air door (125), the air blower (121) is arranged on one side of the evaporator (122), the warm air core body (123) is arranged on the other side of the evaporator (122), the temperature air door (125) is arranged between the evaporator (122) and the warm air core body (123), the inlet end of the electromagnetic expansion valve (124) is connected with the inlet end of the third stop valve (110), and the outlet end of the electromagnetic expansion valve is connected with the evaporator (122) and then is connected with the first heat exchanger (111); the first stop valve (15) is connected with the first electronic expansion valve (14) in parallel, the second stop valve (16) and the one-way valve (18) are connected with the outdoor heat exchanger (17) in parallel, the inlet end of the second electronic expansion valve (19) is connected with the outlet end of the one-way valve (18), and the outlet end of the second electronic expansion valve is connected with the outlet end of the third stop valve (110) after being connected with the second heat exchanger (21); the outlet end of the gas-liquid separator (112) is connected with the inlet end of the compressor (11) to form a refrigerant loop (1);
passenger cabin heats coolant liquid return circuit (4) including water-cooled condenser (13), WPTC (41), the three-way water valve of second (42), warm braw core (123) and first electronic water pump (43) that establish ties in proper order, the three-way water valve of second (42) is adjusted to a and b mouth and 100% switches on, the exit end of first electronic water pump (43) and the entrance connection of water-cooled condenser (13) constitute passenger cabin heats coolant liquid return circuit (4).
2. The integrated indirect heat pump vehicle thermal management system for the electric vehicle as claimed in claim 1, wherein the first heat exchanger (111), the second heat exchanger (21) and the third heat exchanger (22) have four ports; the first inlet of the first heat exchanger (111) is connected with the outlet ends of the third heat exchanger (22), the third stop valve (110) and the evaporator (122), the first outlet is connected with the inlet end of the gas-liquid separator (112), the second inlet is connected with the port b of the first three-way water valve (32), and the second outlet is connected with the inlet end of the radiating water tank (33); the inlet I of the second heat exchanger (21) is connected with the outlet end of the second electronic water pump (24), the outlet I of the second heat exchanger is connected with the inlet I of the third heat exchanger (22), the inlet II of the second heat exchanger is connected with the port c of the second three-way water valve (42), and the outlet II of the second heat exchanger is connected with the inlet end of the first electronic water pump (43); the first inlet of the third heat exchanger (22) is connected with the first outlet of the second heat exchanger (21), the first outlet is connected with the inlet end of the battery pack (23), the second inlet is connected with the outlet end of the second electronic expansion valve (19), and the second outlet is connected with the first inlet of the first heat exchanger (111);
the water-cooled condenser (13) is provided with four ports, wherein an inlet I is connected with the outlet end of the compressor (11), an outlet I is connected with the inlet ends of the first electronic expansion valve (14), the first stop valve (15) and the second stop valve (16), an inlet II is connected with the outlet end of the first electronic water pump (43), and an outlet II is connected with the inlet end of the WPTC (41);
the first three-way water valve (32) and the second three-way water valve (42) are of a one-inlet two-outlet type, an a port of the first three-way water valve (32) is connected with the outlet end of the driving motor and the vehicle-mounted power component (31), a b port of the first three-way water valve is connected with a second inlet of the first heat exchanger (111), and a c port of the first three-way water valve is connected with the inlet end of the heat dissipation water tank (33); and a port a of the second three-way water valve (42) is connected with the outlet end of the WPTC (41), a port b is connected with the inlet end of the warm air core body (123), and a port c is connected with a second inlet of the second heat exchanger (21).
3. The integrated indirect heat pump vehicle thermal management system for the electric vehicle as claimed in claim 2, wherein the refrigerant circuits (1) are connected by a refrigerant line, and the refrigerant line is filled with refrigerant; the battery pack liquid cooling loop (2) is connected through a first water pipe, and first cooling liquid is filled in the first water pipe; the passenger compartment heating coolant circuit (4) is connected by a second water pipe filled with a second coolant; the motor heat dissipation loop (3) is connected through a third water pipe, and a third cooling liquid is filled in the third water pipe.
4. The integrated indirect heat pump vehicle thermal management system for the electric vehicle as claimed in claim 3, wherein the first electronic expansion valve (14) and the electromagnetic expansion valve (124) in the refrigerant circuit (1) are in a conducting state, and the second stop valve (16), the second electronic expansion valve (19), the first stop valve (15) and the third stop valve (110) are in a closed state, so as to form a heating and dehumidifying circuit for the passenger compartment;
a battery cooling circuit is configured in such a manner that a first electronic expansion valve (14) and a first stop valve (15) in the refrigerant circuit (1) are in a conducting state, the opening degree of the second electronic expansion valve (19) is controlled, and a second stop valve (16), an electromagnetic expansion valve (124), and a third stop valve (110) are in a closed state;
the first electronic expansion valve (14), the first stop valve (15) and the third stop valve (110) in the refrigerant circuit (1) are in a closed state, the opening degree of the second electronic expansion valve (19) is controlled, the second stop valve (16) and the electromagnetic expansion valve (124) are in a conducting state, and the passenger compartment heats and dehumidifies and simultaneously cools the battery.
5. The integrated indirect heat pump complete vehicle heat management system for the electric vehicle as claimed in claim 3, wherein the compressor (11), the water-cooled condenser (13), the first electronic expansion valve (14), the outdoor heat exchanger (17), the third stop valve (110), the first heat exchanger (111) and the gas-liquid separator (112) are sequentially connected in series through a refrigerant pipeline, and the outlet end of the gas-liquid separator (112) is connected with the inlet end of the compressor (11) to form a passenger compartment heat pump heating loop;
the water-cooled condenser (13), the WPTC (41), the second three-way water valve (42), the second heat exchanger (21) and the first electronic water pump (43) are sequentially connected through a second water pipe, the second three-way water valve (42) is adjusted to be a port a and a port c and is conducted by 100%, the outlet end of the first electronic water pump (43) is connected with the inlet end of the water-cooled condenser (13), and a first battery heating loop is formed;
the second heat exchanger (21), the third heat exchanger (22), the battery pack (23) and the second electronic water pump (24) are sequentially connected through a first water pipe, and the outlet end of the second electronic water pump (24) is connected with the inlet end of the second heat exchanger (21) to form a second battery heating loop;
the second cooling liquid in the battery heating first loop exchanges heat with the refrigerant in the passenger compartment heat pump heating loop through the water-cooled condenser (13), and the first cooling liquid in the battery heating second loop exchanges heat with the second cooling liquid in the battery heating first loop through the second heat exchanger (21) in a convection mode to form an indirect heat pump heating battery loop.
6. The integrated indirect heat pump vehicle thermal management system for the electric vehicle as claimed in claim 5, wherein the second three-way water valve (42) is adjusted to control the flow distribution of the second coolant, a part of the second coolant circulates according to the battery heating first loop, another part of the second coolant flows into the warm air core (123) through a water pipe, and the temperature damper (125) in the air conditioning box assembly (12) is adjusted to be full heat, so as to form an indirect heat pump for heating the passenger compartment and the battery loop at the same time.
7. The integrated indirect heat pump vehicle thermal management system for the electric vehicle as claimed in claim 5, wherein the passenger compartment heat pump heating circuit constitutes a heat pump first circuit;
the compressor (11), the water-cooled condenser (13), the first electronic expansion valve (14), the outdoor heat exchanger (17), the second electronic expansion valve (19), the third heat exchanger (22), the first heat exchanger (111) and the gas-liquid separator (112) are sequentially connected in series through refrigerant pipelines, the second electronic expansion valve (19) is adjusted to be in a maximum conduction state, and the outlet end of the gas-liquid separator (112) is connected with the inlet end of the compressor (11) to form a second heat pump loop;
the driving motor and vehicle-mounted power component (31), the first three-way water valve (32), the first heat exchanger (111) and the third electronic water pump (34) are sequentially connected in series through a third water pipe, the first three-way water valve (32) is adjusted to be a port a and a port b and is conducted to the maximum, the outlet end of the third electronic water pump (34) is connected with the driving motor and the inlet end of the vehicle-mounted power component (31), and a heat recovery cooling liquid loop of the motor and the vehicle-mounted power component is formed;
the low-temperature refrigerant in the first loop of the heat pump exchanges heat with third cooling liquid in the heat recovery loop of the motor and the vehicle-mounted power component in a convection manner through a first heat exchanger (111), so that heat in the motor and the vehicle-mounted power component is recovered; the low-temperature refrigerant in the second loop of the heat pump exchanges heat with the first cooling liquid in the liquid cooling loop (2) of the battery pack through a third heat exchanger (22) in a convection manner, so that the heat in the battery is recovered; the low-temperature refrigerant in the second loop of the heat pump can exchange heat with the first cooling liquid in the battery pack liquid cooling loop (2) and the third cooling liquid in the heat recovery loop of the motor and the vehicle-mounted power component through the third heat exchanger (22) and the first heat exchanger (111) simultaneously, and heat in the battery and heat in the motor and the vehicle-mounted power component are further recovered.
8. The integrated indirect heat pump vehicle thermal management system for the electric vehicle as claimed in claim 1, wherein the first heat exchanger (111), the second heat exchanger (21) and the third heat exchanger (22) are all plate heat exchangers.
9. The integrated indirect heat pump complete vehicle heat management system for the electric vehicle as claimed in claim 1, wherein the third heat exchanger (22) is used for cooling the battery, the second heat exchanger (21) is used for heating the battery, and the first heat exchanger (111) is used for exchanging heat with waste heat.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922014228.7U CN211592161U (en) | 2019-11-20 | 2019-11-20 | Whole car thermal management system of integrated indirect heat pump for electric automobile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922014228.7U CN211592161U (en) | 2019-11-20 | 2019-11-20 | Whole car thermal management system of integrated indirect heat pump for electric automobile |
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| CN211592161U true CN211592161U (en) | 2020-09-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112848842A (en) * | 2021-03-10 | 2021-05-28 | 广州高澜创新科技有限公司 | Whole electric automobile heat management system and control method thereof |
| WO2022077944A1 (en) * | 2020-10-14 | 2022-04-21 | 广州小鹏汽车科技有限公司 | Thermal management system and vehicle |
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2019
- 2019-11-20 CN CN201922014228.7U patent/CN211592161U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022077944A1 (en) * | 2020-10-14 | 2022-04-21 | 广州小鹏汽车科技有限公司 | Thermal management system and vehicle |
| CN112848842A (en) * | 2021-03-10 | 2021-05-28 | 广州高澜创新科技有限公司 | Whole electric automobile heat management system and control method thereof |
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