CN212386266U

CN212386266U - Thermal management system of vehicle and vehicle that has it

Info

Publication number: CN212386266U
Application number: CN202020288549.6U
Authority: CN
Inventors: 胡康; 梁正伟; 杨丽; 韩向松; 王世洲; 刘晓光; 步一; 张素霞; 邢英金
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2020-03-10
Filing date: 2020-03-10
Publication date: 2021-01-22
Anticipated expiration: 2030-03-10

Abstract

The utility model discloses a thermal management system of vehicle and vehicle that has it, the thermal management system of this vehicle includes: the compression driving branch is connected with a compressor, a gas-liquid separation tank and an indoor heat exchanger; the condensation branch is connected with a condenser; the evaporation branch is connected with an evaporator; the cooling branch is connected with a cooler and a first on-off valve, and the condensation branch is directly communicated with the compression driving branch through the first on-off valve under the first on-off state of the first on-off valve; and when the first on-off valve is in a first off state, the condensation branch is communicated with the compression driving branch after passing through the first deviation path and the evaporation branch and/or the cooling branch. The utility model discloses the thermal management system of vehicle can heat passenger cabin and/or battery pack when low temperature and intensifies, cools off passenger cabin and/or battery pack when high temperature, and the control passenger cabin of being convenient for has suitable temperature range, and the operating temperature of the control battery pack of being convenient for reduces the energy consumption of traveling of vehicle.

Description

Thermal management system of vehicle and vehicle that has it

Technical Field

The utility model relates to a vehicle manufacturing technical field particularly, relates to a thermal management system of vehicle and have thermal management system's of vehicle.

Background

Because each system and its spare part of pure electric vehicles all have different optimum operating temperature intervals because attribute, design demand are different, so need with the help of external auxiliary means, maintain each spare part in suitable temperature range, ensure that the normal, stable, high-efficient work of spare part and passenger cabin satisfy passenger's comfort level demand.

In the prior art, most electric vehicles are formed by modifying traditional internal combustion engine vehicles, in order to reduce the development cost of parts, most host plants are connected with water ways of high-voltage parts in series, the high-voltage parts are cooled by a radiator by virtue of cooling liquid, and most battery packs are cooled by adopting a natural cooling mode. Although the cooling system is low in cost and convenient to modify, the cooling system is difficult to ensure that all parts are in the optimal temperature range to work, the energy consumption of the whole vehicle is large, and the endurance mileage of the whole vehicle is influenced. The systems are independent of each other, and the energy utilization rate is poor. Especially, when the working temperature of the battery pack is too high or too low, the normal operation of the battery pack is seriously influenced, and the charging and discharging performance of the battery pack is influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a thermal management system of vehicle to make the thermal management system of this vehicle have through setting up indoor heat exchanger, evaporimeter and cooler, can heat the heating to passenger cabin when low temperature, cool off passenger cabin and/or battery pack when high temperature, be convenient for control passenger cabin has suitable temperature range, improve user's riding comfort, be convenient for control battery pack's operating temperature, improve battery pack's operational reliability, reduce advantages such as the energy consumption that traveles of vehicle.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a thermal management system for a vehicle, the thermal management system comprising: the compression driving branch is connected with a compressor, a gas-liquid separation tank and an indoor heat exchanger; the condensation branch is connected with a condenser; the evaporation branch is connected with an evaporator, and the evaporator is used for cooling the passenger cabin; the cooling branch is connected with a cooler, and the cooler is used for cooling the battery assembly; the first on-off valve is provided with a first conduction state and a first separation state, and the condensation branch is directly communicated with the compression driving branch through the first on-off valve when the first on-off valve is in the first conduction state; and when the first on-off valve is in the first off state, the condensation branch is communicated with the compression driving branch after passing through a first offset path and the evaporation branch and/or the cooling branch.

According to the utility model discloses heat management system of vehicle, through setting up indoor heat exchanger, evaporimeter and cooler, can heat the heating to passenger cabin and/or battery pack when low temperature, cool off passenger cabin and/or battery pack when high temperature, be convenient for control passenger cabin and have suitable temperature range, improve user's riding comfort, be convenient for control battery pack's operating temperature, improve battery pack's operational reliability, reduce advantages such as the energy consumption that traveles of vehicle.

In addition, the thermal management system of the vehicle according to the above embodiment of the present invention may further have the following additional technical features:

according to some embodiments of the invention, the condensation branch is connected to a condensation expansion valve, the condensation expansion valve being located upstream of the condenser; the evaporation branch is connected with an evaporation expansion valve, and the evaporation expansion valve is positioned at the upstream of the evaporator; the cooling branch is connected with a cooling expansion valve, and the cooling expansion valve is positioned at the upstream of the cooler.

According to some embodiments of the utility model, the thermal management system of vehicle still includes the heating branch road, the heating branch road is connected with heat source device, first driving pump, passenger compartment fan heater and is used for heating battery pack's battery heat exchanger, the heating branch road with indoor heat exchanger heat intercommunication.

According to some embodiments of the utility model, the heating branch road still is connected with the proportional valve, the proportional valve has first interface, second interface and third interface, first interface with passenger compartment fan heater intercommunication, the second interface with battery heat exchanger intercommunication, the third interface with heat source device intercommunication.

According to some embodiments of the invention, the heat source device comprises an engine and/or an auxiliary heating device.

According to some embodiments of the present invention, the heating branch further comprises a reversing valve, the reversing valve having a first state and a second state, the reversing valve communicating the passenger compartment heater and the auxiliary heating device as a first loop through a second off-set path when the reversing valve is in the first state; when the reversing valve is in the second state, the reversing valve communicates the passenger compartment air heater, the auxiliary heating device and the engine into a second loop; the reversing valve is provided with a first reversing interface, a second reversing interface and a third reversing interface, the first reversing interface is communicated with the second off-way, the second reversing interface is communicated with the auxiliary heating device and the passenger compartment air heater, and the third reversing interface is communicated with the engine; when the reversing valve is in the first state, the first reversing interface is communicated with the second reversing interface and disconnected with the third reversing interface; when the reversing valve is in the second state, the second reversing interface is communicated with the third reversing interface and is disconnected with the first reversing interface.

According to some embodiments of the present invention, the thermal management system of the vehicle further comprises a second on-off valve, the second on-off valve has a second on state and a second off state, and the indoor heat exchanger is communicated with the evaporator through an evaporation expansion valve or the indoor heat exchanger is communicated with the cooler through the cooling expansion valve in the second on state of the second on-off valve; and when the second on-off valve is in the second off state, the indoor heat exchanger is communicated with the condenser through the condensation expansion valve.

According to some embodiments of the present invention, the first off-set path is connected with a check valve, the check valve only allows the heat transfer medium to flow from the condensation branch path to the evaporation branch path and/or the cooling branch path.

According to the utility model discloses a some embodiments still include the fan subassembly, the fan subassembly is used for driving air and condenser and carries out heat exchange, the fan subassembly is optionally rotated or is rotated along the opposite direction of first direction along the first direction.

Compared with the prior art, the thermal management system of vehicle has following advantage:

thermal management system of vehicle, through setting up indoor heat exchanger, evaporimeter and cooler, can heat the heating to passenger cabin and/or battery pack 520 when low temperature, cool off passenger cabin and/or battery pack when high temperature, be convenient for control passenger cabin and have suitable temperature range, improve user's the travelling comfort of taking, be convenient for control battery pack's operating temperature improves battery pack's operational reliability, reduces the energy consumption of traveling of vehicle.

Another object of the present invention is to provide a vehicle, such that the vehicle has advantages of reliable operation, low energy consumption.

a vehicle comprises the thermal management system of the vehicle. The vehicle and the thermal management system of the vehicle have the same advantages compared with the prior art, and the detailed description is omitted.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural diagram of a thermal management system of a vehicle according to an embodiment of the present invention.

Reference numerals: the heat management system 1, the compression driving branch 110, the compressor 111, the gas-liquid separation tank 112, the indoor heat exchanger 113, the condensation branch 120, the condenser 121, the evaporation branch 130, the evaporator 131, the cooling branch 140, the cooler 141, the engine circuit 150, the engine 151, the first radiator 152, the second driving pump 153, the battery branch 160, the transmission branch 170, the transmission and control component 171, the heat dissipation branch 180, the second radiator 181, the first on-off valve 210, the second on-off valve 220, the condensation expansion valve 311, the evaporation expansion valve 312, the cooling expansion valve 313, the heating branch 300, the passenger compartment heater 310, the battery heat exchanger 320, the proportional valve 330, the first interface 331, the second interface 332, the third interface 333, the auxiliary heater 340, the first driving pump 350, the first off-way 410, the one-way valve 420, the second off-way 430, the fan assembly 510, the battery assembly 520, the first change-over valve 610, the first change-over interface 611, the second heat exchanger, A second direction-changing port 612, a third direction-changing port 613, a second direction-changing valve 620, a first switching port 621, a second switching port 622, and a third switching port 623.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail with reference to fig. 1 in conjunction with the embodiments.

Referring to fig. 1, a thermal management system 1 of a vehicle according to an embodiment of the present invention includes a compression driving branch 110, a condensation branch 120, an evaporation branch 130, a cooling branch 140, and a first on-off valve 210.

The compression driving branch 110 is connected to a compressor 111, a gas-liquid separation tank 112, and an indoor heat exchanger 113. The condensing branch 120 is connected to a condenser 121. The evaporation branch 130 is connected with an evaporator 131, and the evaporator 131 is used for cooling the passenger compartment. The cooling branch 140 is connected to a cooler 141, and the cooler 141 is used for cooling a battery assembly 520 of the vehicle. The first on-off valve 210 has a first on state and a first off state, and the condensing branch 120 is directly communicated with the compression driving branch 110 through the first on-off valve 210 in the first on state of the first on-off valve 210. When the first on-off valve 210 is in the first blocking state, the heat exchange medium in the condensation branch 120 is communicated with the compression driving branch 110 after passing through the first offset 410 and the evaporation branch 130 and/or the cooling branch 140, and at this time, the passenger compartment can be cooled.

It should be understood that in some embodiments, one end of the evaporation branch 130 and one end of the cooling branch 140 may both communicate with the condensation branch 120 through the first offset 410, and the other end of the evaporation branch 130 and the other end of the cooling branch 140 respectively communicate with the compression driving branch 110.

Specifically, "connected" may refer to both direct connection of heat exchange media and thermal connection capable of heat exchange. "communication" may refer to both direct communication of heat exchange media and thermal communication to enable heat exchange.

According to the utility model discloses thermal management system 1 of vehicle, through setting up indoor heat exchanger 113, can utilize indoor heat exchanger 113 and the interior structure of vehicle to carry out heat exchange like this, for example can utilize indoor heat exchanger 113 heating passenger cabin and/or battery pack 520, when external ambient temperature is lower, can heat passenger cabin to comfortable temperature by bus, improve user's travelling comfort, heat battery pack 520 to best charge-discharge temperature interval, improve battery pack 520's job stabilization nature and reliability, avoid the temperature to hang down and influence the discharge of battery pack 520, the accumulate ability, promote battery pack 520's available electric quantity, guarantee battery pack 520's working property, with the maximum discharge capacity that satisfies the vehicle, continuation of the journey mileage and quick charge time requirement.

By providing the cooler 141, the battery pack 520 can be cooled by the cooler 141. Like this when external environment temperature is higher, can guarantee battery pack 520's cooling effect, make battery pack 520 can work at suitable temperature range, improve battery pack 520's job stabilization nature and reliability, avoid battery pack 520 overheated phenomenon to appear, be convenient for prolong battery pack 520's life.

Meanwhile, by providing the evaporator 131, the passenger compartment can be cooled by the evaporator 131. Therefore, when the external environment temperature is higher, the passenger compartment can be cooled to a comfortable riding temperature, the riding comfort of a user is improved, and the whole performance of the vehicle is improved.

In addition, when the battery pack 520 has waste heat and the passenger compartment has a heating demand, the cooler 141 can be used for recovering heat of the battery pack 520, and the heat is transferred to the passenger compartment through the indoor heat exchanger 113 to heat the passenger compartment, so that energy consumption and operation cost of the thermal management system 1 can be reduced, energy utilization rate of the thermal management system 1 is improved, running energy consumption of a vehicle is reduced, and endurance mileage of the vehicle is improved.

Therefore, according to the utility model discloses heat management system 1 of vehicle has through setting up indoor heat exchanger 113, evaporimeter 131 and cooler 141, can heat the heating to passenger cabin and/or battery pack 520 when low temperature, cool off passenger cabin and/or battery pack 520 when high temperature, be convenient for control passenger cabin has suitable temperature range, improve user's riding comfort, be convenient for control battery pack 520's operating temperature, improve battery pack 520's operational reliability, reduce advantages such as the energy consumption of traveling of vehicle.

A thermal management system 1 for a vehicle according to an embodiment of the present invention is described below with reference to the drawings.

In some embodiments of the present invention, referring to fig. 1, a thermal management system 1 of a vehicle according to embodiments of the present invention includes a compression driving branch 110, a condensation branch 120, an evaporation branch 130, a cooling branch 140, and a first on-off valve 210.

Specifically, as shown in fig. 1, the condensation branch 120 is connected with a condensation expansion valve 311, and the condensation expansion valve 311 is located upstream of the condenser 121. The evaporation branch 130 is connected to an evaporation expansion valve 312, and the evaporation expansion valve 312 is located upstream of the evaporator 131. The cooling branch 140 is connected to a cooling expansion valve 313, and the cooling expansion valve 313 is located upstream of the cooler 141. Thus, when the heat exchange medium passes through the evaporation expansion valve 312, the cooling expansion valve 313 or the condensation expansion valve 311, the expansion valve can make the medium-temperature high-pressure heat exchange medium become low-temperature low-pressure wet steam through the throttling function of the medium-temperature high-pressure heat exchange medium, so that the heat exchange medium can absorb heat in subsequent pipelines to achieve the refrigeration effect, and the working stability and reliability of the heat management system 1 can be improved.

Optionally, as shown in fig. 1, the thermal management system 1 of the vehicle further includes a heating branch 300, the heating branch 300 is connected with a heat source device, a first driving pump 350, a passenger compartment heater 310 and a battery heat exchanger 320 for heating the battery assembly 520, and the heating branch 300 is in thermal communication with the indoor heat exchanger 113. In this way, the indoor heat exchanger 113 can exchange heat with the heating branch 300, and the indoor heat exchanger 113 can transfer the heat to the passenger compartment heater 310 and/or the battery heat exchanger 320 through the heating branch 300, so as to heat the passenger compartment and the battery assembly 520.

Specifically, the battery heat exchanger 320 is provided in series with the cooler 141.

Further, as shown in fig. 1, a proportional valve 330 is connected to the heating branch 300, the proportional valve 330 has a first port 331, a second port 332 and a third port 333, the first port 331 is communicated with the passenger compartment heater 310, the second port 332 is communicated with the battery heat exchanger 320, and the third port 333 is communicated with the heat source device. The flow rate of the heat exchange medium flowing through the passenger compartment heater 310 and the battery heat exchanger 320 can be adjusted through the proportional valve 330, so that the proportion of heat transferred to the passenger compartment heater 310 and the battery heat exchanger 320 can be adjusted, and the heating accuracy and flexibility of the passenger compartment heater 310 and the battery heat exchanger 320 are improved.

Alternatively, as shown in fig. 1, the heat source device includes the engine 151 and/or the auxiliary heating device 340. Specifically, when the engine 151 is used for providing heat for heating, the energy consumption and the operating cost of the thermal management system 1 can be reduced, the energy utilization rate of the thermal management system 1 can be improved, the running energy consumption of the vehicle can be reduced, and the cruising range of the vehicle can be improved. When the heat of the engine 151 is insufficient, the auxiliary heating device 340 can be used for auxiliary heating, so that the heating reliability of the battery assembly 520 and the passenger compartment is improved, the working performance of the battery assembly 520 is improved, and the riding experience of passengers is improved.

In some embodiments, the passenger compartment heater 310 is located upstream of the battery heat exchanger 320 and the auxiliary heater 340 is located upstream of the passenger compartment heater 310. Therefore, the passenger compartment air heater 310 can be preferentially heated, and the heating effect of the passenger compartment is ensured. Meanwhile, when the heat pump system is insufficient in heat, the auxiliary heater 340 can be used for carrying out auxiliary heating on the passenger compartment air heater 310 and the battery heat exchanger 320, so that the heating effect on the passenger compartment air heater 310 and the battery heat exchanger 320 is further improved.

Specifically, the auxiliary heater 340 may be an electric heater or a PTC (semiconductor heating element).

Optionally, the heating branch 300 further comprises a direction valve 610, the direction valve 610 having a first state and a second state, the direction valve 610 communicating the passenger compartment heater 310 and the auxiliary heating device 340 as a first circuit through the second deviation 430 when the direction valve 610 is in the first state. When the direction change valve 610 is in the second state, the direction change valve 610 communicates the passenger compartment heater 310, the auxiliary heating device 340, and the engine 151 as a second circuit. The direction-changing valve 610 has a first direction-changing port 611, a second direction-changing port 612, and a third direction-changing port 613, the first direction-changing port 611 communicates with the second bypass 430, the second direction-changing port 612 communicates with the auxiliary heating device 340 and the passenger compartment heater 310, and the third direction-changing port 613 communicates with the engine 151. When the direction valve 610 is in the first state, the first direction port 611 is in communication with the second direction port 612 and is disconnected from the third direction port 613. When the direction valve 610 is in the second state, the second direction port 612 is in communication with the third direction port 613 and is disconnected from the first direction port 611. Thus, when the reversing valve 610 is in the first state, the engine 151 does not provide heat to the heating branch 300, and the engine 151 may cool and dissipate heat through the first circuit. When the diverter valve 610 is in the second state, the diverter valve 610 may communicate the passenger compartment heater 310 with the heating branch 300 to facilitate the engine 151 providing heat to the heating branch 300.

Optionally, as shown in fig. 1, a first driving pump 350 is further connected to the heating branch 300, and the first driving pump 350 is connected between the indoor heat exchanger 113 and the passenger compartment heater 310. In this way, the first driving pump 350 can be used to drive the heat exchange medium in the heating branch 300 to flow, which facilitates heat exchange between the indoor heat exchanger 113 and the passenger compartment heater 310 and the battery heat exchanger 320.

Specifically, as shown in fig. 1, the thermal management system 1 of the vehicle further includes a second on-off valve 220, the second on-off valve 220 having a second on state and a second off state, and in the second on state of the second on-off valve 220, the indoor heat exchanger 113 communicates with the evaporator 131 through the evaporation expansion valve 312, or the indoor heat exchanger 113 communicates with the cooler 141 through the cooling expansion valve 313. When the second shut-off valve 220 is in the second shut-off state, the indoor heat exchanger 113 communicates with the condenser 121 via the condensation expansion valve 311. Thus, by switching the working state of the second on-off valve 220, not only can the passenger compartment and/or the battery assembly 520 be cooled, but also the waste heat of the battery assembly 520 or the waste heat of the engine 151 in the engine 151 compartment of the vehicle can be recovered, so that the efficiency value of the thermal management system 1 is improved, and the thermal management system is more energy-saving and environment-friendly.

Specifically, when the second shut-off valve 220 is in the second conduction state, both the condensation expansion valve 311 and the cooling expansion valve 313 can perform the expansion function. If the expansion valve 312 is completely closed, the heat exchange medium will be divided into two paths for circulating flow. The first path is as follows: after the heat exchange medium enters the condenser 121, the system can absorb heat of the external environment through the condenser 121. And a second path: the heat exchange medium enters the cooler 141 after passing through the cooling expansion valve 313, and the system can recover energy through the cooler 141 when residual heat exists in the low-temperature loops of the transmission and control assembly 171 and the battery assembly 520, so as to improve the working efficiency of the heat pump.

When the second on-off valve 220 is in the second off state, if the condensation expansion valve 311 is in the fully open state and the first on-off valve 210 is closed, after the heat exchange medium passes through the condenser 121, a part of the heat exchange medium flows through the evaporation expansion valve 312, and the passenger compartment is cooled by the evaporator 131 through the expansion action of the evaporation expansion valve 312; the other part of the heat exchange medium passes through the cooling expansion valve 313, and is cooled by the cooler 141 on the battery assembly 520 through the expansion action of the cooling expansion valve 313.

Specifically, as shown in fig. 1, a check valve 420 is connected to the first bias path 410, and the check valve 420 allows the heat exchange medium to flow only from the condensing branch path 120 to the evaporating branch path 130 and/or the cooling branch path 140. Since the check valve 420 can limit the flow direction of the heat exchange medium, only the heat exchange medium can flow from the condensing branch 120 to the evaporating branch 130 and/or the cooling branch 140 without a reverse flow. Therefore, the heat exchange medium in the evaporation branch 130 and/or the cooling branch 140 can be prevented from reversely flowing into the condensation branch 120, so that the working stability and reliability of the thermal management system 1 can be improved, and the working efficiency of the thermal management system 1 can be improved.

Optionally, as shown in fig. 1, the thermal management system 1 of the vehicle further includes a fan assembly 510, the fan assembly 510 is used for driving air to exchange heat with the condenser 121, and the fan assembly 510 can rotate in a first direction or rotate in a direction opposite to the first direction. This facilitates heat exchange between the condenser 121 and the external environment, and improves the operating efficiency of the condenser 121.

Further, the condenser 121 can dissipate heat to the external environment and recover heat from the external environment. When condenser 121 is dissipating heat to the external environment, fan of fan assembly 510 may rotate in a first direction to blow the airflow from the external environment toward condenser 121. When the condenser 121 recovers heat from the external environment, the fan of the fan assembly 510 may rotate in the opposite direction of the first direction to blow out waste heat in the vehicle, so as to improve the efficiency of the condenser 121 in recovering heat.

Specifically, as shown in fig. 1, the thermal management system 1 further includes an engine circuit 150 and a first directional control valve 610, and the engine circuit 150 is connected with the engine 151, the first radiator 152 and the second drive pump 153. The first direction valve 610 has a first direction change state, a second direction change state and a third direction change state, the first direction valve 610 has a first direction change port 611, a second direction change port 612 and a third direction change port 613, the first direction change port 611 communicates with the indoor heat exchanger 113, the second direction change port 612 communicates with the heating branch 300, and the third direction change port 613 communicates with the engine circuit 150. The first direction port 611 communicates with the second direction port 612 when the first direction valve 610 is in the first direction state, the first direction port 611 communicates with the third direction port 613 when the first direction valve 610 is in the second direction state, and the second direction port 612 communicates with the third direction port 613 when the first direction valve 610 is in the third direction state.

More specifically, a thermostat is also coupled to engine circuit 150, and may be utilized to control the output distribution of waste heat from engine circuit 150.

Optionally, as shown in fig. 1, the thermal management system 1 further includes a battery branch 160, a transmission branch 170, and a heat dissipation branch 180. The battery leg 160 is in thermal communication with the battery assembly 520. The drive branch 170 is in thermal communication with the drive and control assembly 171. The heat dissipation branch 180 is in thermal communication with a second heat sink 181. The thermal management system 1 further comprises a second direction valve 620, the second direction valve 620 having a first switching state and a second switching state. The second direction valve 620 has a first switching port 621, a second switching port 622, and a third switching port 623, and the first switching port 621 communicates with the second direction port 612 when the second direction valve 620 is in the first switching state, and the first switching port 621 communicates with the third direction port 613 when the second direction valve 620 is in the second switching state.

Further, the transmission and control assembly 171 includes a control element, a generator and a driving motor, and the control element may include high voltage components such as a charger, a DC-DC voltage converter, a distribution box, etc.

Alternatively, the first and second on-off

valves

210 and 220 may be electromagnetic shut-off valves. The condensation expansion valve 311, the evaporation expansion valve 312, and the cooling expansion valve 313 may be electronic expansion valves. Proportional valve 330 may be a solenoid proportional valve. The first direction valve 610 and the second direction valve 620 may be solenoid direction valves. The first driving pump 350 and the second driving pump 153 may be electronic water pumps. The battery heat exchanger 320 may be a plate type heat exchanger.

Optionally, the first direction valve 610 is a one-inlet two-outlet type, the first direction port 611 is normally closed when power is off, the third direction port 613 is normally open when power is off, and the first direction port 611 and the third direction port 613 are interchanged when power is on. The second reversing valve 620 is of a one-inlet two-outlet type, the second switching interface 622 is normally open when power is off, the third switching interface 623 is normally closed when power is off, and the second switching interface 622 and the third switching interface 623 are interchanged when power is on. The proportional valve 330 has one inlet and two outlets, the first interface 331 is an inlet, the second interface 332 and the third interface 333 are outlets, the opening degree of the second interface 332 changes between 0% and 100% corresponding to the opening degree of the third interface 333 changing between 100% and 0, and the specific opening degree is determined by a strategy.

In some embodiments of the present invention, thermal management system 1 has an air conditioning mode. When the vehicle has a temperature reduction requirement, the compressor 111 works, the heat exchange medium passes through the indoor heat exchanger 113, the second on-off valve 220 is closed, the condensation expansion valve 311 is in a full-open state, the condenser 121 and the first on-off valve 210 are closed, the heat exchange medium passes through the expansion action of the condensation expansion valve 311 and the evaporation expansion valve 312, the passenger compartment is cooled through the evaporator 131, and the heat exchange medium passes through the expansion action of the condensation expansion valve 311 and the cooling expansion valve 313, so that the temperature of the battery pack 520 is reduced through the cooler 141. The evaporation expansion valve 312 and the cooling expansion valve 313 can be independently closed and opened, so that the independent passenger compartment cooling and the battery assembly 520 cooling can be realized, and then the heat exchange medium enters the compressor 111 through the gas-liquid separation tank 112 to form closed circulation. When the vehicle has a heating demand, the indoor heat exchanger 113 transfers heat to the passenger compartment heater 310 and the battery heat exchanger 320 to facilitate heating of the passenger compartment and the battery assembly 520.

In other embodiments of the present invention, the thermal management system 1 has a first heat recovery mode. In the normal heat pump mode, the compressor 111 works, the heat exchange medium passes through the indoor heat exchanger 113, the indoor heat exchanger 113 transfers heat to the passenger compartment air heater 310, and heating of the passenger compartment is achieved. When the heating heat is insufficient, the auxiliary heater 340 can perform auxiliary heating, when the heat has surplus, the battery component 520 can be heated through the battery heat exchanger 320, the heat exchange medium passes through the indoor heat exchanger 113, the second on-off valve 220 is closed, the condensation expansion valve 311 achieves an expansion function, the heat exchange medium enters the condenser 121, the system absorbs the heat of the external environment through the condenser 121, if the engine 151 is just stopped at the moment, the interior of the cabin has waste heat, the strategy of reversing through the fan component 510 is achieved, hot air in the cabin can pass through the condenser 121, so that the heat pump system can absorb more external heat, the application environment range of the heat pump system can be detected by about 5-10 ℃ through the method, the heat pump is achieved on the basis of original energy saving, and energy is saved. The first on-off valve 210 is in an open state, and the heat exchange medium enters the compressor 111 through the first on-off valve 210.

In other embodiments of the present invention, the thermal management system 1 has a second heat recovery mode. Under the normal heat pump mode, compressor 111 works, heat transfer medium passes through indoor heat exchanger 113, indoor heat exchanger 113 passes the heat to passenger compartment air heater 310, passenger compartment realizes the heating, when the heating heat is not enough, auxiliary heater 340 can the auxiliary heating, the heat can also heat for battery pack 520 through battery heat exchanger 320 when having the surplus, heat transfer medium passes through indoor heat exchanger 113, second shut-off valve 220 is opened, condensation expansion valve 311 and cooling expansion valve 313 realize the expansion function, evaporation expansion valve 312 closes completely, heat transfer medium falls into two the tunnel, the first way: the heat exchange medium enters the condenser 121, the system absorbs heat of the external environment through the condenser 121, if the engine 151 is just stopped at the moment, waste heat exists in the engine room, hot air in the engine room can pass through the condenser 121 through a strategy of reversing the fan assembly 510, so that the heat pump system can absorb more external heat, the application environment range of the heat pump system can be detected by about 5-10 ℃ through the method, the heat pump can save more energy by about 20% on the basis of original energy saving, and the first on-off valve 210 is in an open state. And a second path: the heat exchange medium enters the cooler 141 through the cooling expansion valve 313. When the heat pump works, if the low-temperature loop has waste heat, the energy of the low-temperature loop can be recovered through the cooler 141, so that the working efficiency of the heat pump is improved, the working temperature of the heat pump is detected, and the heating effect is improved. The first path of heat exchange medium and the second path of heat exchange medium are collected through the gas-liquid separation tank 112, and then enter the compressor 111 to complete the work of an independent heat pump mode, a heat pump mode and an energy recovery mode, and the recovery amount of waste heat of the engine room and energy recovery of the low-temperature loop needs to be defined according to strategies. The first and second modes of operation may be operated separately to implement separate heat pump and energy recovery modes, respectively.

In other embodiments of the present invention, thermal management system 1 has a heat pump dehumidification mode. The dehumidification mode can be operated alone, also can operate with the heat pump jointly, this embodiment only introduces the dehumidification mode alone, compressor 111 works under the dehumidification mode, heat transfer medium passes through indoor heat exchanger 113, indoor heat exchanger 113 passes heat to the warm braw return circuit, heat transfer medium passes through indoor heat exchanger 113, second on-off valve 220 opens, condensation expansion valve 311 closes, cooling expansion valve 313 closes completely, evaporation expansion valve 312 realizes the expansion function, later heat transfer medium passes through evaporimeter 131, realize the dehumidification function of air conditioner, later heat transfer medium gets into gas-liquid separation jar 112, get into compressor 111.

The first heat recovery mode, the second heat recovery mode, the air conditioning mode and the dehumidification mode of the heat pump described above may be implemented by the thermal management system 1 alone or in combination. The thermal management system 1 may be a heat pump architecture system.

In other embodiments of the present invention, thermal management system 1 has a heat pump two stage expansion mode. The heat management system 1 may also implement a secondary expansion mode to improve the working efficiency of the heat pump, in the normal heat pump mode, the compressor 111 works, the heat transfer medium passes through the indoor heat exchanger 113, the indoor heat exchanger 113 transfers heat to the warm air loop, the passenger compartment implements heating, when the heating heat is insufficient, the auxiliary heater 340 may assist heating, the heat transfer medium passes through the indoor heat exchanger 113, the second on-off valve 220 is closed, the condensation expansion valve 311 implements an expansion function, the heat transfer medium enters the condenser 141, the first on-off valve 210 is completely closed, the heat transfer medium passes through the one-way valve 420, the evaporation expansion valve 312 is completely closed, the cooling expansion valve 313 performs an expansion function, the heat transfer medium after secondary expansion enters the cooler 141, and the cooler 141 recovers the waste heat of the low-temperature loop again to implement higher heat pump efficiency.

That is, the present invention has the active cooling function of the battery pack 520, i.e., the cooling function of the cooler 141, and also includes the heating function of the battery pack 520, and can be realized in the heat pump mode.

The utility model discloses a heat management system 1 that the extended range vehicle carried, the heat pump has been realized the energy recuperation to the inside used heat in cabin, the saving of bigger degree has put in order car heating energy consumption, the continuation of the journey mileage under the pure electric mode has been improved, heat pump system also can be when transmission and control assembly 171 and battery pack 520 low temperature return circuit have the waste heat simultaneously, carry out waste heat recovery to the low temperature return circuit through cooler 141, the waste heat recovery in reunion cabin, great improvement the heat pump system efficiency at low temperature, the low temperature operating temperature of heat pump has been extended, only the cabin has used heat or low temperature return circuit to have the waste heat, heat pump system alright realize normal work, theoretically not receive the limit value of ambient temperature. The energy recovery system can greatly save the heating energy consumption of the vehicle in the pure electric mode, and improve the pure electric endurance mileage to the greatest extent.

The utility model discloses can realize three kinds of modes work alone and the combination work in air conditioner mode, dehumidification mode, the heat pump waste heat recovery mode. Simultaneously the utility model discloses can realize the second grade evaporation under the heat pump mode to realize dehumidification mode or waste heat recovery mode.

According to another aspect of the present invention, the vehicle includes the thermal management system 1 of the vehicle of the above embodiment.

According to the utility model discloses the vehicle, because according to the utility model discloses the thermal management system 1 of vehicle of above-mentioned embodiment has above-mentioned technological effect, therefore, according to the utility model discloses the vehicle also has corresponding technological effect, promptly through setting up indoor heat exchanger 113, evaporimeter 131 and cooler 141, can heat the heating to passenger cabin and/or battery pack 520 when low temperature, cool off passenger cabin and/or battery pack 520 when high temperature, be convenient for control passenger cabin has suitable temperature range, improve user's riding comfort, be convenient for control battery pack 520's operating temperature, improve battery pack 520's operational reliability, reduce advantages such as the energy consumption that traveles of vehicle.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A thermal management system (1) of a vehicle, characterized by comprising:

the compression driving branch (110), the compression driving branch (110) is connected with a compressor (111), a gas-liquid separation tank (112) and an indoor heat exchanger (113);

the condensation branch (120), the condensation branch (120) is connected with a condenser (121);

the evaporation branch (130), the evaporation branch (130) is connected with an evaporator (131), and the evaporator (131) is used for cooling the passenger compartment;

the cooling branch (140), the cooling branch (140) is connected with a cooler (141), and the cooler (141) is used for cooling the battery assembly (520);

a first on-off valve (210), the first on-off valve (210) having a first on state and a first off state, the condensation branch (120) being in direct communication with the compression driving branch (110) through the first on-off valve (210) when the first on-off valve (210) is in the first on state;

when the first on-off valve (210) is in the first off state, the condensation branch (120) is communicated with the compression driving branch (110) through a first deviation path (410) and the evaporation branch (130) and/or the cooling branch (140).

2. The thermal management system (1) of a vehicle according to claim 1, characterized in that a condensation expansion valve (311) is connected to the condensation branch (120), the condensation expansion valve (311) being located upstream of the condenser (121);

the evaporation branch (130) is connected with an evaporation expansion valve (312), and the evaporation expansion valve (312) is positioned at the upstream of the evaporator (131);

the cooling branch (140) is connected with a cooling expansion valve (313), and the cooling expansion valve (313) is positioned at the upstream of the cooler (141).

3. The thermal management system (1) of a vehicle according to claim 1, further comprising a heating branch (300), the heating branch (300) being connected with a heat source device, a first drive pump (350), a passenger compartment heater (310) and a battery heat exchanger (320) for heating the battery assembly (520), the heating branch (300) being in thermal communication with the indoor heat exchanger (113).

4. The thermal management system (1) of a vehicle according to claim 3, characterized in that a proportional valve (330) is further connected to the heating branch (300), the proportional valve (330) having a first interface (331), a second interface (332) and a third interface (333), the first interface (331) communicating with the passenger compartment heater (310), the second interface (332) communicating with the battery heat exchanger (320), the third interface (333) communicating with the heat source device.

5. The thermal management system (1) of the vehicle according to claim 3, characterized in that the heat source device comprises an engine (151) and/or an auxiliary heating device (340).

6. The thermal management system (1) of the vehicle of claim 5, characterized in that the heating branch (300) further comprises a diverter valve (610), the diverter valve (610) having a first state and a second state, the diverter valve (610) communicating the passenger compartment heater (310) with the auxiliary heating device (340) as a first circuit through a second bias path (430) when the diverter valve (610) is in the first state;

when the direction change valve (610) is in the second state, the direction change valve (610) communicates the passenger compartment heater (310), the auxiliary heating device (340) and the engine (151) as a second circuit;

wherein the reversing valve (610) has a first reversing interface (611), a second reversing interface (612), and a third reversing interface (613), the first reversing interface (611) being in communication with the second bias path (430), the second reversing interface (612) being in communication with the auxiliary heating device (340) and the passenger compartment heater (310), the third reversing interface (613) being in communication with the engine (151);

when the direction valve (610) is in the first state, the first direction port (611) is in communication with the second direction port (612) and is disconnected from the third direction port (613);

when the direction valve (610) is in the second state, the second direction port (612) is in communication with the third direction port (613) and is disconnected from the first direction port (611).

7. The thermal management system (1) of the vehicle according to claim 2, further comprising a second on-off valve (220), the second on-off valve (220) having a second conducting state and a second blocking state, the indoor heat exchanger (113) communicating with the evaporator (131) through the evaporation expansion valve (312) or the indoor heat exchanger (113) communicating with the cooler (141) through the cooling expansion valve (313) in the second conducting state of the second on-off valve (220);

and when the second cut-off valve (220) is in the second cut-off state, the indoor heat exchanger (113) is communicated with the condenser (121) through the condensation expansion valve (311).

8. The thermal management system (1) of a vehicle according to claim 1, characterized in that a one-way valve (420) is connected to the first bias path (410), said one-way valve (420) allowing only the flow of heat exchange medium from the condensation branch (120) to the evaporation branch (130) and/or the cooling branch (140).

9. The thermal management system (1) of the vehicle of claim 1, further comprising a fan assembly (510), the fan assembly (510) configured to drive air in heat exchange with the condenser (121), the fan assembly (510) selectively rotatable in a first direction or in a direction opposite the first direction.

10. A vehicle, characterized by comprising a thermal management system (1) of a vehicle according to any of claims 1-9.