JP7361178B1 - Vehicle temperature control system - Google Patents

Abstract

[Problem] To improve on-vehicle mountability, assemblability, and heating capacity of a vehicle temperature control system equipped with a heat medium circuit. A temperature control system for a vehicle includes a refrigerant circuit and a heat medium circuit. The heat medium circuit includes a high pressure side heat exchanger, a low pressure side heat exchanger, an outdoor heat exchanger, an outdoor bypass path, a temperature control device, and a plurality of valves, and the flow of the heat medium is switched by the valves. and a circuit switching device configured to be able to switch the configuration of the heat medium circuit. The heat medium circuit is configured such that a series circuit including a low pressure side heat exchanger and a high pressure side heat exchanger arranged in series can be set. The series circuit corresponds to a configuration provided to the heat medium circuit in response to the switching state of each of the plurality of valves. [Selection diagram] Figure 1

Description

The present disclosure relates to a temperature control system installed in a vehicle.

Vehicles such as electric vehicles and so-called hybrid vehicles that obtain driving power from engines and electric motors tend to lack heat sources, but in addition to air conditioning functions required for vehicles such as heating, cooling, dehumidification, and ventilation, Thermal management and waste heat utilization of in-vehicle equipment such as batteries is required. In order to meet these demands, conventional systems that include a chiller to cool the battery and a heater to warm the battery in addition to a heat pump system, or a system that uses a pump to transport water heated by the exhaust heat of the radiator to the indoor air conditioning unit. A number of systems have been used, such as the

As a thermal management system for a vehicle, a system has been proposed that includes a primary loop in which a refrigerant circulates according to a refrigeration cycle, and a secondary loop in which a heat medium (water, etc.) is conveyed to an indoor air conditioning unit by a pump (for example, Patent Document 1).

The heat management system described in Patent Document 1 includes a first heat medium circuit in which an evaporator of a refrigerant circuit and a heat medium outside air heat exchanger are arranged, a condenser of the refrigerant circuit, and a heater core of a cabin air conditioning unit. and a second heat medium circuit. The first heat medium circuit and the second heat medium circuit are in an unconnected state (unconnected mode) and a connected state assuming a low outside temperature by switching the flow paths by the first switching means and the second switching means. (concatenated mode).

In the uncoupled mode, a heat pump operation is performed in which heat from the outside air is pumped into the heat medium of the second heat medium circuit. In the coupled mode, the heat medium flowing out from the evaporator is not flowed into the heat medium outside air heat exchanger, but is combined with the heat medium flowing out from the condenser, and the heat medium is flowed into the evaporator and condenser in parallel. . At this time, the first heat medium circuit and the second heat medium circuit are connected via the evaporator and the condenser.

Patent No. 6083304

In pursuit of heat management, air conditioning functions, passenger comfort, etc. of equipment installed in vehicles, and in order to realize a multi-functional temperature control system, it is necessary to switch the flow of heat medium in a complex manner and set multiple routes. Therefore, the piping structure including multiple flow path switching valves etc. becomes complicated. As a result, the volume increases, making it less suitable to be mounted on a vehicle. Additionally, the number of man-hours required to assemble multiple valves, piping, joints, hoses, etc. increases.
The first switching means and the second switching means described in Patent Document 1 are each illustrated as a five-way valve. Whether they consist of multiple valves or not, and their internal structure has not been specified, so it is unclear whether they can be mounted on a vehicle, how they can be assembled, etc.

Furthermore, in the connected mode of Patent Document 1, the heat medium is caused to flow into the evaporator and the condenser in parallel, and the heat medium flowing out from the evaporator and the heat medium flowing out from the condenser are mixed. The heat medium then flows into the evaporator and condenser at a temperature intermediate between the temperatures of the respective heat mediums before mixing. Therefore, compared to the non-coupled mode, it takes time for the temperature of the heat medium flowing out from the condenser to rise. Furthermore, since the flow rate of the heat medium flowing into the evaporator, condenser, and indoor heat exchanger is reduced, the temperature difference between the refrigerant and the heat medium is small in each of the evaporator and condenser. As a result, the effect of increasing the low pressure of the refrigeration cycle through the connected mode and the effect of increasing the high pressure by throttling the heat medium flow rate of the second heat medium circuit are limited, so there is room for improvement in heating capacity. .

The present disclosure aims to improve the vehicle mountability, assemblability, and heating capacity of a vehicle temperature control system including a heat medium circuit.

The present disclosure is a temperature control system for a vehicle, and includes a refrigerant circuit that includes a compressor, a high-pressure side heat exchanger, a pressure reduction section, and a low-pressure side heat exchanger, and is configured to allow refrigerant to circulate according to a refrigeration cycle; A heat medium circuit configured to allow circulation of a heat medium that transfers heat to and receives heat from the refrigerant.
The heat medium circuit includes a high-pressure side heat exchanger that exchanges heat between the refrigerant and the heat medium, a low-pressure side heat exchanger that exchanges heat between the refrigerant and the heat medium, and an outdoor heat exchanger that exchanges heat between the outside air and the heat medium. , an outdoor bypass path that detours the heat medium from the outdoor heat exchanger, a temperature control device corresponding to the temperature control object heated or cooled by the heat medium, or used for heating or cooling the temperature control object, and a plurality of temperature control devices. A circuit switching device including a valve and configured to be able to switch the configuration of the heat medium circuit by switching the flow of the heat medium using the valve.
The heat medium circuit is configured such that a series circuit including a low pressure side heat exchanger and a high pressure side heat exchanger arranged in series can be set.
The series circuit corresponds to a configuration provided to the heat medium circuit in response to the switching state of each of the plurality of valves.

According to the present disclosure, by providing a circuit switching device that is configured to switch the configuration of the heat medium circuit according to the switching state of the valve, all the switching on the heat medium circuit necessary for realizing various operation modes can be performed. Valve can be integrated. Therefore, compared to the case where multiple routes are set by combining individual valves distributed on the heat transfer circuit, it is possible to avoid complicating the structure and reduce the volume to ensure on-vehicle compatibility. It is possible to improve productivity by eliminating the man-hours required to assemble hoses and the like.

Further, the circuit switching device allows a series circuit in which a low-pressure side heat exchanger and a high-pressure side heat exchanger are arranged in series to be set in the heat medium circuit. According to such a series circuit, the heat medium flowing through the high-pressure heat exchanger is sequentially heated by the refrigerant. In comparison, the temperature of the heat medium can be raised quickly. Furthermore, since the amount of heat medium circulated through the indoor heat exchanger is large, the amount of heat exchanged between the heat medium and the air becomes large.

Furthermore, according to the compressor heat source mode based on a series circuit, heat is absorbed from the outside air into the heat medium by the heat medium passing through the high-pressure side heat exchanger and the temperature control device being radiated to the refrigerant by the low-pressure side heat exchanger. The low pressure in the refrigerant circuit increases compared to the case, and the density of the refrigerant sucked into the compressor increases accordingly, resulting in an increase in the circulating flow rate of the refrigerant. Since the heat exchange capacity is improved by increasing the refrigerant circulation flow rate, the heating capacity can be improved.
Therefore, heating capacity can be ensured even in situations where it is difficult to secure a heat source because the outside temperature is low.

FIG. 1 is a circuit diagram showing a vehicle temperature control system according to an embodiment of the present disclosure. FIG. 2 is an expanded circuit diagram showing a plurality of valves included in the circuit switching device shown in FIG. 1; (a) is a schematic diagram showing ports of the circuit switching device shown in FIG. 1; (b) to (d) are diagrams showing switching states of the switching valve. FIG. 2 is an expanded circuit diagram (No. 1) showing an operating state of the system shown in FIG. 1 in a cooling mode. 5 is a diagram (No. 1) showing switching states of each valve of the circuit switching device corresponding to the configuration of the heat medium circuit shown in FIG. 4. FIG. FIG. 2 is an expanded circuit diagram (No. 2) showing an operating state of the system shown in FIG. 1 in a cooling mode (battery cooling). 7 is a diagram (No. 2) showing switching states of each valve of the circuit switching device corresponding to the configuration of the heat medium circuit shown in FIG. 6. FIG. FIG. 3 is a developed circuit diagram (No. 3) showing an operating state of the system shown in FIG. 1 in a first dehumidifying heating mode. 9 is a diagram (No. 3) showing switching states of each valve of the circuit switching device corresponding to the configuration of the heat medium circuit shown in FIG. 8. FIG. FIG. 4 is a developed circuit diagram (No. 4) showing an operating state of the system shown in FIG. 1 in a first dehumidifying heating mode (battery cooling). 11 is a diagram (No. 4) showing the switching state of each valve of the circuit switching device corresponding to the configuration of the heat medium circuit shown in FIG. 10. FIG. FIG. 2 is a developed circuit diagram (No. 5) showing an operating state of the system shown in FIG. 1 in a second dehumidifying heating mode. 13 is a diagram (No. 5) showing the switching state of each valve of the circuit switching device corresponding to the configuration of the heat medium circuit shown in FIG. 12. FIG. FIG. 6 is an expanded circuit diagram (No. 6) showing an operating state of the system shown in FIG. 1 in a second dehumidifying heating mode (battery cooling). 15 is a diagram (No. 6) showing the switching state of each valve of the circuit switching device corresponding to the configuration of the heat medium circuit shown in FIG. 14. FIG. FIG. 7 is a developed circuit diagram (No. 7) showing an operating state of the system shown in FIG. 1 in a second dehumidifying heating mode (battery heating). 17 is a diagram (No. 7) showing the switching state of each valve of the circuit switching device corresponding to the configuration of the heat medium circuit shown in FIG. 16. FIG. FIG. 8 is a developed circuit diagram (No. 8) showing an operating state of the system shown in FIG. 1 in a third dehumidifying heating mode. FIG. 19 is a diagram showing the switching state of each valve of the circuit switching device corresponding to the configuration of the heat medium circuit shown in FIG. 18 (No. 8). FIG. 9 is a developed circuit diagram (No. 9) showing an operating state of the system shown in FIG. 1 in a third dehumidification/heating mode (battery cooling). 21 is a diagram (No. 9) showing the switching state of each valve of the circuit switching device corresponding to the configuration of the heat medium circuit shown in FIG. 20. FIG. FIG. 3 is a developed circuit diagram (No. 10) showing an operating state of the system shown in FIG. 1 in a third dehumidifying heating mode (battery heating). 23 is a diagram (No. 10) showing switching states of each valve of the circuit switching device corresponding to the configuration of the heat medium circuit shown in FIG. 22. FIG. FIG. 2 is a developed circuit diagram (No. 11) showing an operating state of the system shown in FIG. 1 in a heat pump mode. 25 is a diagram (No. 11) showing the switching state of each valve of the circuit switching device corresponding to the configuration of the heat medium circuit shown in FIG. 24. FIG. FIG. 2 is a developed circuit diagram (No. 12) showing an operating state of the system shown in FIG. 1 in heat pump mode (battery cooling). FIG. 27 is a diagram showing the switching state of each valve of the circuit switching device corresponding to the configuration of the heat medium circuit shown in FIG. 26 (No. 12). FIG. 2 is a developed circuit diagram (No. 13) showing an operating state of the system shown in FIG. 1 in heat pump mode (battery heating). FIG. 29 is a diagram showing switching states of each valve of the circuit switching device corresponding to the configuration of the heat medium circuit shown in FIG. 28 (No. 13). FIG. 2 is a developed circuit diagram (No. 14) showing an operating state of the system shown in FIG. 1 in a startup heat pump mode. 31 is a diagram (No. 14) showing the switching state of each valve of the circuit switching device corresponding to the configuration of the heat medium circuit shown in FIG. 30. FIG. FIG. 2 is a developed circuit diagram (No. 15) showing an operating state of the system shown in FIG. 1 in a startup heat pump mode (battery heating). 33 is a diagram (No. 15) showing the switching state of each valve of the circuit switching device corresponding to the configuration of the heat medium circuit shown in FIG. 32. FIG. FIG. 2 is an expanded circuit diagram (No. 16) showing an operating state of the system shown in FIG. 1 in a heater mode. FIG. 35 is a diagram showing the switching state of each valve of the circuit switching device corresponding to the configuration of the heat medium circuit shown in FIG. 34 (No. 16). FIG. 3 is an expanded circuit diagram (No. 17) showing an operating state of the system shown in FIG. 1 in heater mode (battery cooling). FIG. 37 is a diagram showing the switching state of each valve of the circuit switching device corresponding to the configuration of the heat medium circuit shown in FIG. 36 (No. 17). FIG. 3 is an expanded circuit diagram (No. 18) showing an operating state of the system shown in FIG. 1 in heater mode (battery heating). 39 is a diagram (No. 18) showing the switching state of each valve of the circuit switching device corresponding to the configuration of the heat medium circuit shown in FIG. 38. FIG. FIG. 3 is a developed circuit diagram (No. 19) showing an operating state of the system shown in FIG. 1 in a first startup heater mode. FIG. 41 is a diagram showing the switching state of each valve of the circuit switching device corresponding to the configuration of the heat medium circuit shown in FIG. 40 (No. 19). FIG. 20 is an expanded circuit diagram (No. 20) showing an operating state of the system shown in FIG. 1 in a second startup heater mode. 43 is a diagram (No. 20) showing the switching state of each valve of the circuit switching device corresponding to the configuration of the heat medium circuit shown in FIG. 42. FIG. FIG. 21 is an expanded circuit diagram (No. 21) showing an operating state of the system shown in FIG. 1 in a second activation heater mode (battery cooling). 45 is a diagram (No. 21) showing the switching state of each valve of the circuit switching device corresponding to the configuration of the heat medium circuit shown in FIG. 44. FIG. FIG. 22 is an expanded circuit diagram (No. 22) showing an operating state of the system shown in FIG. 1 in a second activation heater mode (battery heating). 47 is a diagram (No. 22) showing the switching state of each valve of the circuit switching device corresponding to the configuration of the heat medium circuit shown in FIG. 46. FIG. FIG. 23 is an expanded circuit diagram showing an operating state of the system shown in FIG. 1 in a first radiator water flow mode (No. 23). FIG. 49 is a diagram showing the switching state of each valve of the circuit switching device corresponding to the configuration of the heat medium circuit shown in FIG. 48 (No. 23). FIG. 24 is an expanded circuit diagram showing an operating state of the system shown in FIG. 1 in a second radiator water flow mode (No. 24). 51 is a diagram showing the switching state of each valve of the circuit switching device corresponding to the configuration of the heat medium circuit shown in FIG. 50 (No. 24); FIG.

Hereinafter, one embodiment of the present disclosure will be described with reference to the accompanying drawings.
[Embodiment]
The temperature control system 1 for a vehicle shown in FIGS. 1 and 2 is applicable, for example, to an electric vehicle that does not have an engine and obtains driving force for driving the vehicle from an electric motor for driving, or for an electric vehicle that does not have an engine and obtains driving force for driving the vehicle from an electric motor for driving, or It is installed in a vehicle (not shown) such as a so-called hybrid vehicle that obtains driving force.
The temperature control system 1 performs air conditioning such as heating and cooling, dehumidification, and ventilation for the passenger compartment 8 in which the passengers board, as well as air conditioning for the battery device 6 (power supply device), driving motor, heat-generating electronic devices, etc. installed in the vehicle. Responsible for equipment heat management, exhaust heat recovery, etc. The general term ``thermal management'' refers to air conditioning to the appropriate temperature and humidity, and controlling in-vehicle equipment to an appropriate temperature.
Electric power stored in an on-vehicle battery device 6 is supplied to the temperature control system 1 and electric devices and electronic devices provided in the on-vehicle device. The battery device 6 is charged from an external power source when the vehicle is stopped.

In the circuit diagram of the temperature control system 1 shown in FIG. 1, a circuit switching device 30 is shown. The circuit switching device 30 includes a plurality of valves as described later. In FIG. 2, a plurality of valves of the circuit switching device 30 are shown expanded.

〔overall structure〕
As shown in FIG. 2, the temperature control system 1 includes a refrigerant circuit 10 configured to allow circulation of a refrigerant, a heat medium circuit 20 configured to allow circulation of a heat medium that transfers heat to and from the refrigerant, and a heat transfer circuit 10 configured to allow circulation of a refrigerant. The temperature control system 1 is provided with a control device 5 that sets the temperature control system 1 to a predetermined operation mode and controls the operating state of the temperature control system 1 according to the operation mode.
Further, the temperature control system 1 preferably includes a sensor (not shown) that detects physical quantities such as the outside air temperature, the temperature of the air blown into the vehicle interior 8, the temperature of the heat medium, and the temperature or pressure of the refrigerant.

The temperature control system 1 includes a plurality of operation modes selected by a passenger or by the control device 5. These operation modes are based on the configuration given to the heat medium circuit 20 in accordance with the switching state of each valve provided in the circuit switching device 30. This embodiment exemplifies 24 operation modes No. 1 to No. 24 (FIGS. 4 to 51) set in the same heat medium circuit 20.

[Refrigerant circuit configuration]
The refrigerant circuit 10 includes a compressor 11, a condenser 12, an expansion valve 13, and an evaporator 14, as shown in FIG. 2 as an example of the configuration. Refrigerant circulates in the refrigerant circuit 10 according to a refrigeration cycle.
As the refrigerant sealed in the refrigerant circuit 10, any known appropriate single refrigerant or mixed refrigerant can be used. For example, as the refrigerant of this embodiment, HFC (Hydro Fluoro Carbon) refrigerants such as R410A and R32, HFO (Hydro Fluoro Olefin) refrigerants such as R1234ze and R1234yf, or hydrocarbon (HC) refrigerants such as propane and isobutane are used. It is possible to use In particular, it is preferable to use R1234yf as the refrigerant in this embodiment.

When using the fluorocarbon-based or hydrocarbon-based refrigerants listed above, a subcritical refrigeration cycle is constructed in which the refrigerant pressure on the high-pressure side does not exceed the critical pressure of the refrigerant.
When carbon dioxide (CO ₂ ) is used as the refrigerant, a transcritical refrigeration cycle is configured in which the refrigerant pressure on the high pressure side exceeds the critical pressure of the refrigerant. Even in that case, the refrigerant can radiate heat by the high-pressure side heat exchanger like the condenser 12 of this embodiment, and the refrigerant can absorb heat by the low-pressure side heat exchanger like the evaporator 14 of this embodiment. A refrigerant constituting a transcritical refrigeration cycle, such as carbon dioxide refrigerant, can also be employed in the refrigerant circuit 10.

The compressor 11 corresponds to an electric compressor equipped with a motor (not shown). The compressor 11 uses a compression mechanism to adiabatically compress refrigerant sucked into a housing (not shown) and then discharges the refrigerant.

The condenser 12 exchanges heat between the refrigerant gas discharged from the compressor 11 and a heat medium.
The expansion valve 13 (pressure reducing section) reduces the pressure of the refrigerant flowing out from the condenser 12 to adiabatically expand the refrigerant. As the expansion valve 13, in addition to an electronic expansion valve whose opening degree can be controlled based on a command from the control device 5, a temperature-type expansion valve can be adopted. Alternatively, a capillary tube can be used instead of the expansion valve 13.

The evaporator 14 causes the refrigerant flowing out from the expansion valve 13 to exchange heat with a heat medium. The refrigerant evaporated by the evaporator 14 is sucked into the compressor 11.
An accumulator (gas-liquid separator), not shown, can be provided between the evaporator 14 and the compressor 11.

A relatively high refrigerant pressure (high pressure) is applied to the condenser 12, and a relatively low refrigerant pressure (low pressure) is applied to the evaporator 14. The refrigerant circulates through the refrigerant circuit 10 based on the pressure difference between high pressure and low pressure.
In FIG. 2, the flow of refrigerant on the low pressure side is shown by a thick solid line, and the flow of refrigerant on the high pressure side is shown by a thick broken line. The same applies to other figures.

[Configuration of heat medium circuit]
The heat medium circuit 20 is configured such that a heat medium capable of exchanging heat with a refrigerant can be circulated through the condenser 12 or the evaporator 14 . The heat medium is used for cooling or heating at least one temperature-controlled object. The temperature control targets in this embodiment correspond to the air inside the vehicle interior 8 and the battery device 6.
The heat medium sealed in the heat medium circuit 20 is a liquid such as water or brine that circulates through the heat medium circuit 20 while maintaining a liquid phase state. Examples of the brine include a mixture of water and propylene glycol, or a mixture of water and ethylene glycol.

As an example of the configuration is shown in FIG. 2, which is a developed circuit diagram, the heat medium circuit 20 includes a condenser 12, an evaporator 14, a first pump 21 and a second pump 22, an outdoor heat exchanger 23, The outdoor bypass path 24, the first indoor heat exchanger 25-1 and the second indoor heat exchanger 25-2, both of which serve as indoor heat exchangers, the battery device 6, the first switching valve 31, and the second switching valve. 32, a third switching valve 33, a first battery switching valve 34, and a second battery switching valve 35. All of the switching valves 31 to 35 correspond to four-way valves.

Here, in FIG. 2, the first switching valve 31, the second switching valve 32, the third switching valve 33, the first battery switching valve 34, and the second battery switching valve 35 are distributed on the heat medium circuit 20. are actually integrated into one circuit switching device 30 (FIG. 1).

Preferably, the heat medium circuit 20 includes a condenser bypass path 12A that detours the heat medium from the condenser 12, and a condenser flow rate adjustment valve 12V. The flow rate ratio of the heat medium flowing through the condenser 12 and the condenser bypass path 12A can be adjusted by the condenser flow rate adjustment valve 12V.
When the flow rate ratio is changed, the flow rate at which the heat medium circulates through the path including the condenser 12 of the heat medium circuit 20 changes. Accordingly, the amount of heat absorbed from the refrigerant to the heat medium in the condenser 12 changes, and the high pressure in the refrigerant circuit 10 changes.
As the high pressure increases, the compressor power gradually increases, so the higher the pressure, the higher the heating capacity. From the viewpoint of increasing the pressure difference between the low pressure and the high pressure to ensure sufficient heating capacity, it is preferable to set the high pressure as high as possible within a range that ensures the pressure resistance of equipment such as the housing of the compressor 11.

Preferably, the heat medium circuit 20 includes an evaporator bypass path 14A that detours the heat medium from the evaporator 14, and an evaporator flow rate adjustment valve 14V. The evaporator flow rate adjustment valve 14V can adjust the flow rate ratio of the heat medium flowing through the evaporator 14 and the evaporator bypass path 14A.
When the flow rate ratio is changed, the flow rate at which the heat medium circulates through the path including the evaporator 14 of the heat medium circuit 20 changes. Accordingly, the amount of heat released from the heat medium to the refrigerant in the evaporator 14 changes, and the low pressure of the refrigerant circuit 10 changes.
As for the relationship between low pressure and compressor power, the compressor power draws a curve with a peak at the low pressure set on the horizontal axis, for example, 1 MPa. For example, from 0.1 MPa to 1 MPa, the increase in power due to an increase in the density of the refrigerant sucked into the compressor 11 is greater than the decrease in power due to a decrease in enthalpy difference, so the power of the compressor 11 is increases, and the heating capacity based on the amount of heat corresponding to the power of the compressor 11 also increases. Since the low pressure gradually decreases from the peak, even if the pressure exceeds the peak, a small rate of change, for example up to 1.2 MPa, is allowed.

Both the first pump 21 and the second pump 22 correspond to electric pumps driven by a motor (not shown). The first pump 21 pumps the heat medium by sucking in and discharging the heat medium flowing out from at least one of the evaporator 14 and the evaporator bypass path 14A. The second pump 22 pumps the heat medium by sucking in and discharging the heat medium flowing out from at least one of the condenser 12 and the condenser bypass path 12A.

The first pump 21 of this embodiment is arranged between the outlet of the evaporator 14 and the second switching valve 32. Further, the second pump 22 of this embodiment is arranged between the outlet of the condenser 12 and the third switching valve 33.

The outdoor heat exchanger 23 exchanges heat between the outside air outside the vehicle compartment 8 and the heat medium. The outdoor heat exchanger 23 corresponds to, for example, a radiator placed near an air inlet of a vehicle. The outside air supplied to the outdoor heat exchanger 23 due to the running of the vehicle and the operation of the outdoor blower 23A radiates or absorbs heat based on the temperature difference between the outside air and the heat medium.

The outdoor bypass path 24 detours the heat medium from the outdoor heat exchanger 23. The outdoor heat exchanger 23 is used in a heater mode, which will be described later.

The first and second indoor heat exchangers 25-1 and 25-2 provide conditioned air into the vehicle interior 8 by exchanging heat between the air sent by the indoor blower 25A and a heat medium.
The indoor blower 25A is driven by a motor and blows air (inside air) in the vehicle interior 8, outside air, or a mixed gas of inside air and outside air toward the indoor heat exchanger 25.

If the temperature control system 1 does not have a dehumidifying/heating mode, the heat medium circuit 20 may include only one indoor heat exchanger (for example, 25-1).

The temperature control system 1 includes two indoor heat exchangers 25-1 and 25-2 arranged in series with respect to the flow of air sent by the indoor blower 25A in order to perform a dehumidifying heating mode (not shown). The first indoor heat exchanger 25-1 is placed upstream of the airflow, and the second indoor heat exchanger 25-2 is placed downstream of the airflow.
During the dehumidification heating mode, the relatively low temperature heat medium flowing out from the evaporator 14 is supplied to the first indoor heat exchanger 25-1, and the relatively low temperature heat medium flowing out from the condenser 12 is supplied to the second indoor heat exchanger 25-2. A relatively high temperature heat medium is supplied.

The HVAC (Heating, Ventilation, and Air Conditioning) unit U includes first and second indoor heat exchangers 25-1, 25-2, an indoor blower 25A, and a duct (not shown) through which air sent by the indoor blower 25A flows. , and a damper (not shown) that adjusts the flow rate of air flowing into the second indoor heat exchanger 25-2.

Although not shown in detail, the battery device 6 includes a battery main body which is a storage battery, and a battery heat exchanger and a heat radiating member provided in the battery main body as necessary.
The heat medium circuit 20 includes heat exchange paths 41 and 42 configured to enable heat exchange between the battery device 6 and the heat medium directly or indirectly via air or the like.
The first battery switching valve 34 switches the first heat exchange circuit 41 between open and closed. The second battery switching valve 35 switches the second heat exchange circuit 42 between open and closed.

The heat medium circuit 20 may include an indoor bypass path 26 (not shown) that detours the heat medium from the indoor heat exchanger 25. In that case, when the vehicle interior 8 is not air-conditioned, the heat medium detoured from the indoor heat exchanger 25 can be supplied to the battery device 6 through the indoor bypass path 26.

[Configuration and operation of circuit switching device]
The circuit switching device 30 shown in FIGS. 3A and 5 is configured to be able to switch the configuration of the heat medium circuit 20 by switching the flow of the heat medium using one or more of the valves 31 to 35. There is.
The circuit switching device 30 includes a plurality of switching valves corresponding to the first switching valve 31, the second switching valve 32, the third switching valve 33, the first battery switching valve 34, and the second battery switching valve 35 shown in FIG. It includes valves 31 to 35 (FIG. 5), a plurality of external ports a to l, and a drive section (not shown) that drives the valve bodies of the valves 31 to 35.
The valves 31-35, external ports a-1, and the drive section are integrated as a single member.

Each of the valves 31 to 35 has four ports A, B, C, and D. By using a plurality of valves 31 to 35 having the same number of ports, it is possible to reduce costs by using common parts.
The valve bodies of the valves 31 to 35 of this embodiment are configured to be individually driven by a drive section (not shown). Each of the valves 31 to 35 is driven by an individual drive shaft without being linked to the operation of the other valves.
Based on the control command issued from the control device 5, the drive unit can give each valve a switching state corresponding to the control command.

FIG. 3(b) is a diagram showing the switching state of the valve 31 corresponding to the first switching valve 31. There are three switching states of the valve 31.
FIG. 3(c) is a diagram showing a common switching state of the second switching valve 32 and the third switching valve 33. There are four switching states of the valves 32 and 33.
FIG. 3(d) is a diagram showing a common switching state of the first battery switching valve 34 and the second battery switching valve 35. There are two switching states of the valves 34 and 35.

The external ports a to l communicate with each port of the valves 31 to 35, and also communicate with the flow path of the heat medium circuit 20 outside the circuit switching device 30. External ports a to l correspond to positions a to l shown in FIG. 2, respectively.
As shown in FIG. 1, the external port a is connected to the discharge side of the first pump 21. The connection destinations of each external port a to l are as follows.

a: Inflow side of the condenser flow rate adjustment valve 12V b: Discharge side of the second pump 22 c: Discharge side of the first pump 21 d: Inflow side of the evaporator flow rate adjustment valve 14V e: Second indoor heat exchanger 25- 2 outlet side f: Inlet side of the second indoor heat exchanger 25-2 g: Outlet side of the first indoor heat exchanger 25-1 h: Inlet side of the first indoor heat exchanger 25-1 i: Battery device 6 outflow side j: Inflow side of battery device 6 k: Outlet side of outdoor heat exchanger 23 l: Inlet side of outdoor heat exchanger 23

5, FIG. 7, FIG. 9...FIG. 51 show an example of interconnection of the external ports a to l and each of the valves 31 to 35. External port a shown in FIG. 1 corresponds to external port a in FIG. 5 and the like. The same applies to external ports b to l.
The external ports a to l of the circuit switching device 30 can be arranged in the same direction as in the illustrated example. For example, external ports a to d are arranged on one side of the casing of the circuit switching device 30, and external ports e to k are arranged on the other side of the casing.

5, FIG. 7, FIG. 9...FIG. 51, the configuration of the connections (heating medium paths) interconnecting the valves 31 to 35 and the external ports a to l is the same.
Depending on the switching states of the valves 31 to 35, a route corresponding to the operating mode is set in the heat medium circuit 20.

An example of the flow of the heat medium will be explained with reference to FIG. The valve body of the valve 32 shown in FIG. 5 is switched so that ports A and C are open and ports B and D are closed. The external port c to which the port C of the valve 32 is connected is connected to the discharge side of the first pump 21. Therefore, the heat medium flows from the external port c through the ports C and A of the valve 32 toward the external port h. Note that the direction in which the heat medium flows is determined by the positional relationship between each of the external ports a to l and the first pump 21 and the second pump 22.

The circuit switching device 30 constitutes a part of the heat medium circuit 20. Therefore, as shown in FIG. 4, the flow of the heat medium from the external port c to the external port h via the ports C and A of the valve 32 is carried out on the discharge side of the first pump 21 (external This corresponds to the flow from port c) to the inlet side (external port h) of the first indoor heat exchanger 25-1 via the second switching valve 32.
Ports B and D of the valve 32 that are closed correspond to unused sections shown by broken lines in the developed circuit diagrams such as FIG. 4. In the unused section, the heat medium is not pumped by the pump 21 or the pump 22.

The valve body of the valve 31 shown in FIG. 5 is switched to a state in which ports A and C are open and ports B and D are open. The valve bodies of the valves 34 and 35 shown in FIG. 5 are switched to a state in which ports B and C are opened. The valve body of the valve 33 is switched so that ports C and D are open and ports A and B are closed. As described above, the valve body of the valve 32 is switched so that ports A and C are open and ports B and D are closed.
Based on the states of these valves 31 to 35, the heat medium in the low-pressure side circuit C1 flows into the circuit switching device 30 from the external port c, passes through the valve 32, and flows to the outside of the circuit switching device 30 from the external port h. When it flows out, it flows through the first indoor heat exchanger 25-1 and flows into the valve 34 from the external port g. Then, the heat medium passes through ports C and B of the valve 34, flows out from the external port d, flows through the evaporator 14, and then returns to the external port c. On the other hand, the heat medium of the high-pressure side circuit C2 flows from the external port b connected to the discharge side of the second pump 22 to the external port l through the ports C and D of the valve 33. The heat medium flowing out from the external port l passes through the outdoor heat exchanger 23, flows into the valve 31 from the external port k, and reaches the external port a through ports D and B of the valve 31 and ports C and B of the valve 35. Furthermore, after flowing through the condenser 12, the heat medium returns to the external port b.

FIG. 5 shows the switching states of each of the valves 31 to 35 in the cooling mode. The developed circuit diagram of the cooling mode corresponds to FIG. 4. The same operating modes are assigned the same number (for example, No. 1 and No. 1). The switching states of the switching valves 31 to 35 are illustrated near each of the switching valves 31 to 35 in the developed circuit diagram.
In other operation modes (No. 2 to No. 24), the flow of the heat medium is switched based on the switching state of each valve 31 to 35, similar to the cooling mode (No. 1) shown in FIGS. 4 and 5. It will be done.

If the number of operation modes is small, the number of valves provided in the circuit switching device 30 may be smaller than the number of valves 31 to 35 of this embodiment. Alternatively, the number of ports of each valve of the circuit switching device 30 is smaller than the number of ports A to D of this embodiment, or the number of external ports is smaller than the number of external ports a to l of this embodiment. You can also
On the other hand, if the number of operation modes is large, the number of valves provided in the circuit switching device 30, the number of ports of each valve, and the number of external ports may be larger than in this embodiment.
The circuit switching device 30 may include a plurality of valves having different numbers of ports.

[Explanation of each operation mode]
The operation mode of the temperature control system 1 is roughly classified as follows based on the difference in the configuration of the heat medium circuit 20.
Parallel circuit:
In order to implement the operation modes No. 1 to No. 15 (FIGS. 4 to 33), the heat medium circuit 20 is connected to the low pressure side circuit C1 and the high pressure side circuit according to the switching state of the valves 31 to 35 by the circuit switching device 30. The side circuit C2 is configured to be able to be set in parallel.
The low-pressure side circuit C1 includes at least the evaporator 14. The high voltage side circuit C2 includes at least the condenser 12.
The solid line indicates the flow of a relatively low-temperature heat medium flowing through the low-pressure side circuit C1.
The dashed line indicates the flow of the relatively high temperature heat medium flowing through the high-pressure side circuit C2.
The low temperature heat medium is pumped by the first pump 21. The high temperature heat medium is pumped by the second pump 22.

Series circuit:
In order to implement the operation modes No. 16 to No. 22 (FIGS. 34 to 48), the heat medium circuit 20 can be set to a series circuit CC depending on the switching state of the valves 31 to 35 by the circuit switching device 30. It is composed of
The series circuit CC includes at least an evaporator 14 and a condenser 12 arranged in series with respect to the flow of the heat medium.
The solid line shows the flow of the heat transfer medium from the evaporator 14 to the condenser 12.
The dashed line indicates the flow of the heat medium from the condenser 12 to the evaporator 14 .

Single circuit:
In order to implement the operation modes No. 23 and No. 24 (FIGS. 49 to 51), the heat medium circuit 20 is connected to the low pressure side circuit C1 and the high pressure side circuit according to the switching state of the valves 31 to 35 by the circuit switching device 30. One side of the side circuit C2 is configured to be settable.
The low-pressure side circuit C1 includes at least the evaporator 14. The high voltage side circuit C2 includes at least the condenser 12.
The solid line indicates the flow of a relatively low-temperature heat medium flowing through the low-pressure side circuit C1.
The dashed line indicates the flow of the relatively high temperature heat medium flowing through the high-pressure side circuit C2.
The low temperature heat medium is pumped by the first pump 21. The high temperature heat medium is pumped by the second pump 22.

The operation modes No. 1 to No. 24 of the temperature control system 1 will be explained in order below.
In the following explanation, the explanation will focus on matters that are different from the operation modes already explained.

No.1 Cooling mode: Figures 4 and 5
The low-pressure side circuit C1 includes an indoor heat exchanger 25 in addition to the evaporator 14.
The high-pressure side circuit C2 includes an outdoor heat exchanger 23 in addition to the condenser 12.
In the cooling mode, the heat medium circulates through the low-pressure side circuit C1 and the high-pressure side circuit C2.

The heat medium in the low-pressure side circuit C1 is cooled by radiating heat to the refrigerant by the evaporator 14. The heat medium flowing out of the evaporator 14 is supplied to the first indoor heat exchanger 25-1 via the valve 32 (of the circuit switching device 30). The interior of the vehicle compartment 8 is cooled by heat exchange between the heat medium and air by the first indoor heat exchanger 25-1. The heat medium flowing out of the first indoor heat exchanger 25-1 passes through the valve 34 and flows into at least the evaporator 14 of the evaporator 14 and the evaporator bypass path 14A.

On the other hand, when the heat medium in the high-pressure side circuit C2 absorbs heat from the refrigerant by the condenser 12, the heat is radiated to the outside air by the outdoor heat exchanger 23 via the valve 33. The heat medium flowing out from the outdoor heat exchanger 23 flows into at least the condenser 12 of the condenser 12 and the condenser bypass path 12A via the valves 31 and 35.

No.2 Cooling mode (battery cooling): Figures 6 and 7
The difference from No. 1 is that the battery device 6 is cooled. The battery device 6 is preferably maintained within an appropriate temperature range in order to maintain charging/discharging efficiency and prevent deterioration.

The heat medium flowing out from the first indoor heat exchanger 25-1 cools the battery device 6 by being supplied to the battery device 6 through ports C and D of the valve 34 (of the circuit switching device 30). The heat transfer medium that has absorbed heat from the battery device 6 goes to the evaporator 14 through other ports A, B of the valve 34, and for example, the entire flow flows into the evaporator 14.
If air conditioning in the vehicle compartment 8 is not required, it is preferable to stop the operation of the indoor blower 25A. The same applies to other driving modes.

No.3 1st dehumidification heating mode: Figures 8 and 9
In addition to the evaporator 14, the low-pressure side circuit C1 includes a first indoor heat exchanger 25-1.
The high-pressure side circuit C2 includes a second indoor heat exchanger 25-2 and an outdoor heat exchanger 23 in addition to the condenser 12.
In the first dehumidifying heating mode, the heat medium circulates through the low-pressure side circuit C1 and the high-pressure side circuit C2.

The heat medium flowing out from the evaporator 14 is supplied to the first indoor heat exchanger 25-1 via the valve 32. The heat medium flowing out of the condenser 12 is supplied to the second indoor heat exchanger 25-2 and also to the outdoor heat exchanger 23 through separate ports of the valve 33.

In the first dehumidifying heating mode, dehumidified heated air is supplied into the vehicle interior 8 while the outdoor heat exchanger 23 radiates heat from the heat medium to the outside air. According to the first dehumidifying heating mode, the cooling capacity and the dehumidifying capacity can be increased compared to the second and third dehumidifying heating modes.

The air sent by the indoor blower 25A toward the first and second indoor heat exchangers 25-1 and 25-2 is cooled to below the dew point by the low-temperature heat medium flowing through the first indoor heat exchanger 25-1. After being dehumidified, it is heated by the high-temperature heat medium flowing through the second indoor heat exchanger 25-2, and is blown out into the passenger compartment 8.

No.4 1st dehumidification heating mode (battery cooling): Figures 10 and 11
The difference from No. 3 is that the battery device 6 is cooled. Similar to No. 2, the heat medium flowing out from the first indoor heat exchanger 25-1 is supplied to the battery device 6 through the port of the valve 34.

No.5 2nd dehumidification heating mode: Figures 12 and 13
Unlike the first dehumidifying heating mode No. 3, the low-temperature heat medium of the low-pressure side circuit C1 is also supplied to the outdoor heat exchanger 23, thereby absorbing heat from the outside air to the heat medium. By doing so, it is possible to perform a heat pump operation in which heat from the outside air is pumped into a higher temperature heat medium, thereby increasing the heating capacity.

No.6 2nd dehumidification heating mode (battery cooling): Figures 14 and 15
The difference from No. 5 is that the battery device 6 is cooled. Similar to No. 2, the heat medium flowing out from the first indoor heat exchanger 25-1 is supplied to the battery device 6 through the port of the valve 34, thereby cooling the battery device 6. The exhaust heat recovered by the heat medium from the battery device 6 can increase the amount of heat input from the heat medium to the refrigerant in the evaporator 14, thereby improving the heating capacity.

No.7 2nd dehumidification heating mode (battery heating): Figures 16 and 17
The difference from No. 5 is that the battery device 6 is heated. The heat medium flowing out from the second indoor heat exchanger 25-2 passes through the valve 31 and is supplied to the battery device 6 through the port of the valve 35.
For example, the control device 5 determines which mode, No. 6 or No. 7, to control the temperature of the battery device 6 based on the target temperature of the battery device 6 and the detected temperature of the heat medium. I can do it.

No.8 3rd dehumidification heating mode: Figures 18 and 19
Depending on the air conditioning load and the outside temperature, it is not necessary to supply the heat medium to the outdoor heat exchanger 23 as in the third dehumidifying heating mode.
The third dehumidifying and heating mode also allows cooling of the battery device 6 as shown in No. 9 (Figs. 20 and 21), and heating of the battery device 6 as shown in No. 10 (Figs. 22 and 23). is possible.

No.11 Heat pump mode: Figure 24 and Figure 25
The low-pressure side circuit C1 includes an evaporator 14 and an outdoor heat exchanger 23.
High pressure side circuit C2 includes a condenser 12 and a second indoor heat exchanger 25-2.
In the heat pump mode, the heat medium circulates through the low-pressure side circuit C1 and the high-pressure side circuit C2.

Contrary to the No. 1 cooling mode, the low-temperature heat medium shown by the solid line is supplied to the outdoor heat exchanger 23, and the high-temperature heat medium shown by the dashed line is supplied to the indoor heat exchanger 25-2.
The heat medium heated by the condenser 12 is supplied to the second indoor heat exchanger 25-2 by the valve 33, and is used for heating the passenger compartment 8.
On the other hand, the heat medium flowing out from the evaporator 14 is supplied to the outdoor heat exchanger 23 by the valve 32, and absorbs heat from the outside air. The heat medium flowing out of the outdoor heat exchanger 23 returns to the evaporator 14 via the valves 31 and 34, and radiates heat to the refrigerant. Therefore, the heat of the outside air is pumped up to the high-temperature heat medium through the refrigerant circuit 10.

The heat pump mode also allows cooling of the battery device 6 as shown in No. 12 (Figs. 26 and 27), and heating of the battery device 6 as shown in No. 13 (Figs. 28 and 29). be. According to the cooling of the battery device 6, the amount of heat input from the heat medium to the refrigerant in the evaporator 14 can be increased by the exhaust heat recovered by the heat medium from the battery device 6, and the heating capacity can be improved.

No.14 Start-up heat pump mode: Figures 30, 31
The startup heat pump mode is suitable for starting the temperature control system 1. From the start of the refrigeration cycle until it reaches a steady state, the temperature of the heat medium is raised quickly by avoiding cold air being blown into the compartment 8 and by avoiding heat radiation to the air in the compartment 8. In order to do so, it is preferable to detour the heat medium from the second indoor heat exchanger 25-2.

Therefore, in the startup heat pump mode, the high-pressure side circuit C2 includes the indoor bypass path 26 in addition to the condenser 12.
The heat medium flowing out of the condenser 12 flows into the indoor bypass path 26 through the valve 33 . Even if the indoor blower 25A is operating at this time, the heat medium is not flowing through the indoor heat exchanger 25-2, so it is possible to avoid radiation of heat from the heat medium to the air. Furthermore, by flowing through the indoor bypass path 26, pressure loss can be suppressed more than when flowing through the second indoor heat exchanger 25-2.
For example, when the temperature of the heat medium reaches a predetermined temperature or higher, the control device 5 can switch the operation mode from the startup heat pump mode to the No. 11 heat pump mode.

The startup heat pump mode can also heat the battery device 6 as shown in No. 15 (FIGS. 32 and 33).

No.16 Heater mode: Figures 34 and 35
The heater mode is suitable when the outside temperature is significantly below the freezing point (for example, -20° C. or lower). Since the outside temperature is very low, the heater mode detours the heat medium from the outdoor heat exchanger 23 through the outdoor bypass path 24 to avoid heat radiation from the heat medium to the outside air, and performs heating operation using the compressor 11 as a heat source. do.

The series circuit CC used in the heater mode includes a condenser 12, a second indoor heat exchanger 25-2, and an evaporator 14 arranged in series. The heat medium circulates through the series circuit CC through the condenser 12, the second indoor heat exchanger 25-2, and the evaporator 14 in this order.

Regarding the heater mode, the solid line and the dashed-dotted line indicating the flow of the heat medium mean a decrease in the temperature of the heat medium as it flows through the evaporator 14 and an increase in the temperature of the heat medium as it flows through the condenser 12.

According to the series circuit CC, the heat medium flowing out from the condenser 12 flows through the second indoor heat exchanger 25-2 through the valve 33, and heats the interior of the vehicle compartment 8 by exchanging heat with the air. The heat medium flowing out from the second indoor heat exchanger 25-2 heads to the evaporator 14 through ports C and A of the valve 31, and flows into at least the evaporator 14 out of the evaporator 14 and the evaporator bypass path 14A. The heat is radiated to the refrigerant.
The heat medium flowing out from the evaporator 14 flows through the outdoor bypass path 24 through the valve 32, and when it flows into at least the condenser 12 of the condenser 12 and the condenser bypass path 12A, it absorbs heat from the refrigerant.

According to the heater mode, the heat medium that has passed through the condenser 12 and the second indoor heat exchanger 25-2 radiates heat to the refrigerant in the evaporator 14, so that compared to the heat pump mode, the refrigerant is The low pressure of the refrigerant in circuit 10 increases. Due to the increase in low pressure, the density of the refrigerant sucked into the compressor 11 increases, and the amount of refrigerant circulation increases, so that the heating capacity can be improved.
Furthermore, if the high pressure of the refrigerant circuit 10 is increased by restricting the flow rate of the heat medium flowing into the condenser 12 using the condenser flow rate adjustment valve 12V, the volumetric efficiency can be increased and the heating capacity can be improved.

In the heater mode, the low pressure of the refrigerant circuit 10 can be controlled within a predetermined range without being too low or too high by adjusting the flow rate of the heat medium flowing into the evaporator 14 using the evaporator flow rate adjustment valve 14V. can. Similarly, by adjusting the flow rate of the heat medium flowing into the condenser 12 using the condenser flow rate adjustment valve 12V, the high pressure of the refrigerant circuit 10 can be controlled within a predetermined range.
This allows the heating capacity to be adjusted according to the air conditioning load.

No.17 Heater mode (battery cooling): Figures 36 and 37
This mode corresponds to the first compressor heat source mode. The battery device 6 is included in the series circuit CC in order to cool the battery device 6 as the second temperature control device. Except for this point, it is the same as No. 16 heater mode.
The heat medium radiated to the refrigerant by the evaporator 14 flows from the valve 32 through the outdoor bypass path 24 and is supplied to the battery device 6 through ports C and D of the valve 35. The heat medium that has cooled the battery device 6 flows into the condenser 12 through ports A and B of the valve 35 .

No.18 Heater mode (battery heating): Figures 38 and 39
This mode corresponds to the second compressor heat source mode. The battery device 6 is included in the series circuit CC in order to heat the battery device 6 as a second temperature control device. Except for this point, it is the same as No. 16 heater mode.
The heat medium that has absorbed heat from the refrigerant by the condenser 12 flows through the second indoor heat exchanger 25-2 from the valve 33 and is supplied to the battery device 6 through ports C and A of the valve 31 and ports C and D of the valve 34. Ru. The heat medium that has heated the battery device 6 flows into the evaporator 14 through ports A and B of the valve 34 .

No.19 1st startup heater mode: Figures 40 and 41
This mode corresponds to the first starting compressor heat source mode and is suitable for starting the temperature control system 1.
When the temperature control system 1 is activated when the outside temperature is significantly below 0°C and the temperature of the heat medium is as low as the outside temperature, the low pressure in the refrigerant circuit 10 drops as the refrigerant is cooled by the heat medium. However, the evaporation temperature of the refrigerant is lower than the outside temperature.
Therefore, in the first starting heater mode, the heat absorbed from the outside air to the heat medium by the outdoor heat exchanger 23 is transferred to the refrigerant, thereby giving priority to raising the temperature of the refrigerant over heating the interior of the vehicle compartment 8.

In the first starting heater mode, it is preferable that the heat medium is not allowed to flow into the second indoor heat exchanger 25-2, but instead is allowed to flow into the outdoor heat exchanger 23. The series circuit CC used in the first startup heater mode includes an evaporator 14, an outdoor heat exchanger 23, and a condenser 12 arranged in series. The heat medium circulates through the series circuit CC through the evaporator 14, the outdoor heat exchanger 23, and the condenser 12 in this order.

In order to further accelerate the temperature rise of the refrigerant, it is more preferable to bypass the heat medium from the condenser 12. In this case, although not shown, the heat medium flowing out from the evaporator 14 flows from the valve 32 through the outdoor heat exchanger 23 to the condenser 12, and the flow rate is adjusted by the condenser flow rate adjustment valve 12V, so that the total flow rate is Alternatively, it flows into the condenser bypass path 12A at a partial flow rate. By doing so, it is possible to prevent the heat medium from absorbing heat from the refrigerant, and to quickly bring the refrigerant circuit 10 into steady operation.

According to the first startup heater mode, the heat exchanged between the indoor air and the heat medium and the heat medium and the refrigerant are suppressed, and the heat absorbed from the outside air into the heat medium is continuously transferred to the refrigerant. , the low pressure of the refrigerant circuit 10 gradually rises, and the evaporation temperature also rises. In the process, the temperature of the heat medium that exchanges heat with the refrigerant also rises.
The control device 5 preferably shifts the temperature control system 1 to No. 16 heater mode when the heat medium approaches the outside temperature.

No.20 2nd startup heater mode: Figures 42 and 43
This mode corresponds to the second starting compressor heat source mode and is suitable for starting the temperature control system 1. Unlike the first starting heater mode No. 19, this mode does not absorb heat from the outside air to the heat medium, but in order to avoid heat exchange between the indoor air and the heat medium, the indoor heat exchanger 25-2 This mode is similar to the first starting heater mode in that no heat medium is supplied.

The series circuit CC used in the second start-up heater mode includes a condenser 12, an indoor bypass path 26, and an evaporator 14 arranged in series. The heat medium circulates through the series circuit CC through the condenser 12, the indoor bypass path 26, and the evaporator 14 in this order.

Similar to No. 19, it is more preferable to detour the heat medium from the condenser 12 in order to further accelerate the temperature rise of the refrigerant.

According to the second startup heater mode, similarly to the first startup heater mode, the temperature increase of the refrigerant can be promoted by avoiding heat exchange between the air in the vehicle interior 8 and the heat medium.
The second activation heater mode may be performed following the first activation heater mode after the temperature control system 1 is activated. For example, if the temperature of the heat medium has increased due to implementation of the first startup heater mode and the heat transfer from the outside air is no longer possible, and the low pressure of the refrigerant circuit 10 has not reached a predetermined value, the control device 5 may The operating mode can be switched from the first startup heater mode to the second startup heater mode.

In the second startup mode, the battery device 6 can be cooled as shown in No. 21 (Figs. 44 and 45), and the battery device 6 can be heated as shown in No. 22 (Figs. 46 and 47). is possible.

When flowing from the valve 33 to the indoor bypass path 26 as in the second startup mode, even if the indoor blower 25A is operating, the heat medium is not flowing through the indoor heat exchanger 25-2, so the heat Heat dissipation of the medium into the air can be avoided. Furthermore, by flowing through the indoor bypass path 26, pressure loss can be suppressed more than when flowing through the second indoor heat exchanger 25-2.

Note that if the heat medium circuit 20 does not include the indoor bypass path 26, the heat medium is allowed to flow into the indoor heat exchanger 25-2 from the valve 33. In this case, in order to suppress heat exchange with the air, it is preferable to stop the operation of the indoor blower 25A.

No.23 1st radiator water flow mode: Figures 48 and 49
The outdoor heat exchanger 23 can cool the battery device 6 while dissipating heat from the heat medium to the outside air. In this case, the low-pressure side circuit C1 includes an evaporator 14, an outdoor heat exchanger 23, and a battery device 6. High voltage side circuit C2 is not used.
The heat medium in the low-pressure side circuit C1 circulates through the evaporator 14, the outdoor heat exchanger 23, and the battery device 6 while being pumped by the first pump 21. The order in which the heat medium circulates through the evaporator 14, the outdoor heat exchanger 23, and the battery device 6 does not matter.

If cooling of the battery device 6 is possible based on the temperature of the heat medium, the outside temperature, the target temperature of the battery device 6, etc., the compressor 11 is stopped to control the temperature of the battery device 6 while suppressing power consumption. Can be done.

No.24 Radiator water flow mode: Figures 50 and 51
The outdoor heat exchanger 23 can heat the battery device 6 while absorbing heat from the outside air to the heat medium. In this case, the high-pressure side circuit C2 includes a condenser 12, an outdoor heat exchanger 23, and a battery device 6. Low voltage side circuit C1 is not used.
The heat medium in the high-pressure side circuit C2 circulates through the condenser 12, the outdoor heat exchanger 23, and the battery device 6 while being pumped by the second pump 22. The order in which the heat medium circulates through the condenser 12, the outdoor heat exchanger 23, and the battery device 6 does not matter.

Similar to No. 23, it is preferable to stop the compressor 11 depending on the temperature of the heat medium, the outside temperature, the target temperature of the battery device 6, etc.

[Main effects of this embodiment]
By providing the circuit switching device 30 configured to be able to switch the configuration of the heat medium circuit 20 according to the switching state of the valves 31 to 35, all the switching on the heat medium circuit 20 necessary for realizing various operation modes can be performed. Valves 31-35 are integrated. Therefore, compared to the case where individual valves distributed on the heat medium circuit 20 are combined to set a number of routes, it is possible to avoid complicating the structure, reduce the volume, and ensure on-vehicle compatibility. It is possible to improve productivity by eliminating the man-hours required for assembling hoses, hoses, etc.

Furthermore, the circuit switching device 30 allows a series circuit CC in which the evaporator 14 and the condenser 12 are arranged in series to be set in the heat medium circuit 20 . According to such a series circuit CC, the heat medium flowing through the condenser 12 is sequentially heated by the refrigerant. temperature can be raised quickly. Furthermore, since the amount of heat medium circulated through the indoor heat exchanger 25 is large, the amount of heat exchanged between the heat medium and the air becomes large.

Furthermore, according to the heater mode based on the series circuit CC, when the heat medium that has passed through the condenser 12 and the indoor heat exchanger 25-2 radiates heat to the refrigerant by the evaporator 14, heat is absorbed from the outside air to the heat medium. The low pressure of the refrigerant circuit 10 increases compared to the above, and the density of the refrigerant sucked into the compressor 11 increases accordingly, thereby increasing the circulating flow rate of the refrigerant. Since the heat exchange capacity is improved by increasing the refrigerant circulation flow rate, the heating capacity can be improved.
Therefore, heating capacity can be ensured even in situations where it is difficult to secure a heat source because the outside temperature is low.

In addition to the above, it is possible to select the configurations mentioned in the above embodiments or to change them to other configurations as appropriate.

[Additional notes]
[1] A temperature control system for vehicles,
A refrigerant circuit (10) including a compressor (11), a high-pressure side heat exchanger (12), a pressure reducing section (13), and a low-pressure side heat exchanger (14), and configured to allow refrigerant to circulate according to a refrigeration cycle; ,
a heat medium circuit (20) configured to allow circulation of a heat medium that transfers heat to and receives heat from the refrigerant;
The heat medium circuit (20) includes:
the high-pressure side heat exchanger (12) for exchanging heat between the refrigerant and the heat medium;
the low pressure side heat exchanger (14) for exchanging heat between the refrigerant and the heat medium;
an outdoor heat exchanger (23) that exchanges heat between outside air and the heat medium;
an outdoor bypass path (24) that detours the heat medium from the outdoor heat exchanger (23);
A temperature control device (6, 25) corresponding to a temperature control object heated or cooled by the heat medium or used for heating or cooling the temperature control object;
A circuit switching device (30) that includes a plurality of valves (31 to 35) and is configured to be able to switch the configuration of the heat medium circuit (20) by switching the flow of the heat medium using the valves (31 to 35). and,
The heat medium circuit (20) is configured to be able to set up a series circuit (CC) including the low pressure side heat exchanger (14) and the high pressure side heat exchanger (12) arranged in series,
The series circuit (CC) corresponds to the configuration given to the heat medium circuit (20) in accordance with the switching state of each of the plurality of valves (31 to 35), and is a temperature control system for a vehicle (1). .

[2] The plurality of valves (31 to 35) are configured to be individually drivable;
[1] The vehicle temperature control system (1) described in item [1].

[3] The temperature control system (1) has the following operating modes:
A compressor heat source mode in which the heat medium circulates through the series circuit (CC) in the order of the high pressure side heat exchanger (12), the temperature control device (6, 25), and the low pressure side heat exchanger (14). prepare,
The vehicle temperature control system (1) according to [1] or [2].

[4] A low-pressure side bypass path that detours the heat medium from the low-pressure side heat exchanger;
a low-pressure side flow rate adjustment valve configured to be able to adjust a flow rate ratio of the heat medium between the low-pressure side heat exchanger and the low-pressure side bypass path;
The vehicle temperature control system according to any one of [1] to [3].

[5] a high-pressure side bypass path that detours the heat medium from the high-pressure side heat exchanger;
a high-pressure side flow rate adjustment valve configured to be able to adjust a flow rate ratio of the heat medium between the high-pressure side heat exchanger and the high-pressure side bypass path;
The vehicle temperature control system according to any one of [1] to [4].

[6] The heat medium circuit (20) includes:
a first temperature control device (25-1) that exchanges heat between the air as the temperature control target and the heat medium;
a second temperature control device (25-2) corresponding to the temperature control target;
The temperature control system (1), as the compressor heat source mode,
The heat is transferred to the high pressure side heat exchanger (12), the first temperature control device (25-1), the low pressure side heat exchanger (14), and the second temperature control device (25-2) in this order. a first compressor heat source mode in which a medium circulates in the series circuit (CC);
The vehicle temperature control system (1) according to item [3].

[7] The heat medium circuit (20) includes:
a first temperature control device (25-1) that exchanges heat between the air as the temperature control target and the heat medium;
a second temperature control device (25-2) corresponding to the temperature control target;
The temperature control system (1), as the compressor heat source mode,
The heat is transferred to the high pressure side heat exchanger (12), the first temperature control device (25-1), the second temperature control device (25-2), and the low pressure side heat exchanger (14) in this order. a second compressor heat source mode as the compressor heat source mode in which a medium circulates in the series circuit (CC);
The vehicle temperature control system (1) according to item [3].

[8] The temperature control system (1) has the following operating modes:
A first starting compressor heat source in which the heat medium circulates through the series circuit (CC) in the order of the high pressure side heat exchanger (12), the outdoor heat exchanger (23), and the low pressure side heat exchanger (14). Equipped with a mode,
The vehicle temperature control system (1) according to any one of [1] to [7].

[9] The heat medium circuit (20) includes:
comprising a high-pressure side bypass path (12A) that detours the heat medium from the high-pressure side heat exchanger (12),
In the first startup compressor heat source mode,
The heat medium is connected in series in the order of at least one of the high pressure side heat exchanger (12) and the high pressure side bypass path (12A), the outdoor heat exchanger (23), and the low pressure side heat exchanger (14). Circulate the circuit (CC),
The vehicle temperature control system (1) according to item [8].

[10] The temperature control system (1) has the following operating modes:
a second startup compressor heat source mode in which the heat medium circulates through the series circuit (CC) in the order of the high-pressure side heat exchanger (12) and the low-pressure side heat exchanger (14);
The vehicle temperature control system (1) according to any one of [1] to [9].

[11] The heat medium circuit (20) includes:
comprising a high-pressure side bypass path (12A) that detours the heat medium from the high-pressure side heat exchanger (12),
In the second startup compressor heat source mode,
The heat medium circulates through the series circuit (CC) in the order of at least one of the high pressure side heat exchanger (12) and the high pressure side bypass path (12A), and the low pressure side heat exchanger (14).
[10] The vehicle temperature control system (1) according to item [10].

[12] The heat medium circuit (20) includes a low pressure side circuit (C1) including the low pressure side heat exchanger (14) and a high pressure side circuit (C2) including the high pressure side heat exchanger (12). It is configured to be configurable in parallel,
The low-pressure side circuit (C1) and the high-pressure side circuit (C2) correspond to the configuration given to the heat medium circuit (20) in response to the switching state of each of the plurality of valves (31 to 35). ,
The vehicle temperature control system (1) according to any one of [1] to [11].

[13] The heat medium circuit (20) includes:
a first indoor heat exchanger (25-1) disposed upstream of the air flow as the temperature control device (6, 25) that exchanges heat between the air as the temperature control target and the heat medium; a second indoor heat exchanger (25-2) disposed downstream of the air flow;
The low pressure side circuit (C1) includes the low pressure side heat exchanger (14) and the first indoor heat exchanger (25-1),
The high pressure side circuit (C2) includes the high pressure side heat exchanger (12) and the second indoor heat exchanger (25-2),
The temperature control system (1) has the following operating modes:
a dehumidifying heating mode in which the heat medium circulates through the low-pressure side circuit (C1) and the low-pressure side circuit (C1), respectively;
[12] The vehicle temperature control system (1) according to item [12].

[14] The low pressure side circuit (C1) includes the low pressure side heat exchanger (14) and the temperature control device (6, 25),
The high pressure side circuit (C2) includes the high pressure side heat exchanger (12) and the outdoor heat exchanger (23),
The temperature control system (1) has the following operating modes:
a cooling mode in which the heat medium circulates through the low-pressure side circuit (C1) and the high-pressure side circuit (C2), respectively;
The vehicle temperature control system (1) according to [10] or [13].

[15] The low pressure side circuit (C1) includes the low pressure side heat exchanger (14) and the outdoor heat exchanger (23),
The high pressure side circuit (C2) includes the high pressure side heat exchanger (12) and the temperature control device (6, 25),
The temperature control system (1) has the following operating modes:
a heat pump mode in which the heat medium circulates through the low-pressure side circuit (C1) and the high-pressure side circuit (C2), respectively;
The vehicle temperature control system (1) according to any one of [12] to [14].

[16] The heat medium circuit (20) includes a temperature control device (6, 25) bypass path that detours the heat medium from the temperature control device (6, 25),
The high pressure side circuit (C2) includes the high pressure side heat exchanger (12) and the temperature control device bypass path,
The temperature control system (1) is in the heat pump mode,
a starting heat pump mode in which the heat medium circulates through the low-pressure side circuit (C1) and the high-pressure side circuit (C2), respectively;
[15] The vehicle temperature control system (1) according to item [15].

[17] The heat medium circuit (20) includes a low pressure side circuit (C1) including the low pressure side heat exchanger (14) and a high pressure side circuit (C2) including the high pressure side heat exchanger (12). One is configured to be configurable,
The low pressure side circuit (C1) includes the low pressure side heat exchanger (14), the outdoor heat exchanger (23), and the temperature control device (6, 25),
The high pressure side circuit (C2) includes the high pressure side heat exchanger (12), the outdoor heat exchanger (23), and the temperature control device (6, 25).
The vehicle temperature control system (1) according to any one of [1] to [16].

[18] The circuit switching device (30) includes:
the plurality of valves (31 to 35) corresponding to a maximum of five four-way valves (31 to 35);
A plurality of external ports, at most 12, communicating with the valves (31 to 35) and communicating with the flow path of the heat medium circuit (20) outside the circuit switching device (30);
The vehicle temperature control system (1) according to any one of [1] to [17].

[19] The circuit switching device (30) serves as the external port,
a first port (a) communicating with the inlet side of the high pressure side heat exchanger (12);
a second port (b) communicating with the outlet side of the high pressure side heat exchanger (12);
a third port (c) communicating with the outlet side of the low pressure side heat exchanger (14);
a fourth port (d) communicating with the inlet side of the low pressure side heat exchanger (14);
a fifth port (e) communicating with the outlet side of the temperature control device (6, 25);
a sixth port (f) communicating with the inlet side of the temperature control device (6, 25);
a seventh port (k) communicating with the outlet side of the outdoor heat exchanger (23);
an eighth port (l) communicating with the inlet side of the outdoor heat exchanger (23);
Equipped with
The vehicle temperature control system (1) according to any one of [1] to [18].

[20] The heat medium circuit (20) includes:
a first temperature control device (6, 25) that exchanges heat between the air as the temperature control target and the heat medium;
a second temperature control device (6, 25) corresponding to the temperature control target;
The circuit switching device (30) includes, as the port,
the fifth port (e) communicating with the outlet side of the first temperature control device (6, 25);
the sixth port (f) communicating with the inlet side of the first temperature control device (6, 25);
a ninth port (i) communicating with the outlet side of the second temperature control device (6, 25);
a tenth port (j) communicating with the inlet side of the second temperature control device (6, 25);
Equipped with
[19] The vehicle temperature control system (1) according to item [19].

[21] The heat medium circuit (20) includes:
a first indoor heat exchanger (25-1) disposed upstream of the air flow as the temperature control device (6, 25) that exchanges heat between the air as the temperature control target and the heat medium; a second indoor heat exchanger (25-2) disposed downstream of the air flow;
The circuit switching device (30) includes, as the port,
the eleventh port (g) communicating with the outlet side of the first indoor heat exchanger (25-1);
the twelfth port (h) communicating with the inlet side of the first indoor heat exchanger (25-1);
a fifth port (e) communicating with the outlet side of the second indoor heat exchanger (25-2);
a sixth port (f) communicating with the inlet side of the second indoor heat exchanger (25-2);
The vehicle temperature control system (1) according to [19] or [20].

1 Temperature control system 5 Control device 6 Battery device (temperature control device)
8 Compartment 10 Refrigerant circuit 11 Compressor 12 Condenser (high pressure side heat exchanger)
12A Condenser bypass path (high pressure side bypass path)
12V condenser flow rate adjustment valve (high pressure side flow rate adjustment valve)
13 Expansion valve (pressure reducing part)
14 Evaporator (low pressure side heat exchanger)
14A Evaporator bypass path (low pressure side bypass path)
14V Evaporator flow rate adjustment valve (low pressure side flow rate adjustment valve)
20 Heat medium circuit 21 First pump 22 Second pump 23 Outdoor heat exchanger 23A Outdoor blower 24 Outdoor bypass path 25 Indoor heat exchanger (temperature control device)
25A Indoor blower 26 Indoor bypass path 30 Circuit switching device 31 First switching valve, valve 32 Second switching valve, valve 33 Third switching valve, valve 34 First battery switching valve, valve 35 Second battery switching valve, valve 41 First heat exchange circuit 42 Second heat exchange circuit A to D Ports a to l External port C1 Low pressure side circuit C2 High pressure side circuit CC Series circuit U HVAC unit

Claims (21)

A temperature control system for a vehicle,
A refrigerant circuit including a compressor, a high-pressure side heat exchanger, a pressure reduction section, and a low-pressure side heat exchanger, and configured to allow refrigerant to circulate according to a refrigeration cycle;
a heat medium circuit configured to allow circulation of a heat medium that transfers heat to and receives heat from the refrigerant;
The heat medium circuit is
the high-pressure side heat exchanger that exchanges heat between the refrigerant and the heat medium;
the low-pressure side heat exchanger that exchanges heat between the refrigerant and the heat medium;
an outdoor heat exchanger that exchanges heat between outside air and the heat medium;
an outdoor bypass path that detours the heat medium from the outdoor heat exchanger;
A temperature control device corresponding to a temperature control object heated or cooled by the heat medium or used for heating or cooling the temperature control object;
A circuit switching device including a plurality of valves and configured to be able to switch the configuration of the heat medium circuit by switching the flow of the heat medium using the valves,
The heat medium circuit is configured to be able to set up a series circuit including the low pressure side heat exchanger and the high pressure side heat exchanger arranged in series , and
The heat medium circuit is a temperature control system for a vehicle, in which the series circuit corresponding to the switching state of each of the plurality of valves is set . The plurality of valves are configured to be individually drivable.
The vehicle temperature control system according to claim 1. The temperature control system has the following operating modes:
a compressor heat source mode in which the heat medium circulates through the series circuit in the order of the high-pressure side heat exchanger, the temperature control device, and the low-pressure side heat exchanger;
The vehicle temperature control system according to claim 1. a low-pressure side bypass path that detours the heat medium from the low-pressure side heat exchanger;
a low-pressure side flow rate adjustment valve configured to be able to adjust a flow rate ratio of the heat medium between the low-pressure side heat exchanger and the low-pressure side bypass path;
The vehicle temperature control system according to claim 1. a high-pressure side bypass path that detours the heat medium from the high-pressure side heat exchanger;
a high-pressure side flow rate adjustment valve configured to be able to adjust a flow rate ratio of the heat medium between the high-pressure side heat exchanger and the high-pressure side bypass path;
The vehicle temperature control system according to claim 1. The heat medium circuit is
a first temperature control device that exchanges heat between the air as the temperature control target and the heat medium;
a second temperature control device corresponding to the temperature control target;
The temperature control system, as the compressor heat source mode,
A first compressor heat source mode in which the heat medium circulates through the series circuit in the order of the high-pressure side heat exchanger, the first temperature control device, the low-pressure side heat exchanger, and the second temperature control device. ,
The vehicle temperature control system according to claim 3. The heat medium circuit is
a first temperature control device that exchanges heat between the air as the temperature control target and the heat medium;
a second temperature control device corresponding to the temperature control target;
The temperature control system, as the compressor heat source mode,
A first mode as the compressor heat source mode in which the heat medium circulates through the series circuit in the order of the high-pressure side heat exchanger, the first temperature control device, the second temperature control device, and the low-pressure side heat exchanger. Equipped with 2 compressor heat source modes,
The vehicle temperature control system according to claim 3. The temperature control system has the following operating modes:
a first starting compressor heat source mode in which the heat medium circulates through the series circuit in the order of the high-pressure side heat exchanger, the outdoor heat exchanger, and the low-pressure side heat exchanger;
The vehicle temperature control system according to claim 1. The heat medium circuit is
comprising a high-pressure side bypass path that detours the heat medium from the high-pressure side heat exchanger,
In the first startup compressor heat source mode,
The heat medium circulates through the series circuit in the order of at least one of the high-pressure side heat exchanger and the high-pressure side bypass path, the outdoor heat exchanger, and the low-pressure side heat exchanger,
The vehicle temperature control system according to claim 8. The temperature control system has the following operating modes:
a second startup compressor heat source mode in which the heat medium circulates through the series circuit in the order of the high-pressure side heat exchanger and the low-pressure side heat exchanger;
The vehicle temperature control system according to claim 1. The heat medium circuit is
comprising a high-pressure side bypass path that detours the heat medium from the high-pressure side heat exchanger,
In the second startup compressor heat source mode,
The heat medium circulates through the series circuit in the order of at least one of the high-pressure side heat exchanger and the high-pressure side bypass path, and the low-pressure side heat exchanger,
The vehicle temperature control system according to claim 10. The heat medium circuit is configured such that a low pressure side circuit including the low pressure side heat exchanger and a high pressure side circuit including the high pressure side heat exchanger can be set in parallel , and
The heat medium circuit is configured such that the low pressure side circuit and the high pressure side circuit are configured in parallel in accordance with the switching state of each of the plurality of valves.
The vehicle temperature control system according to claim 1. The heat medium circuit is
The temperature control device for exchanging heat between the air as the temperature control target and the heat medium includes a first indoor heat exchanger disposed upstream of the air flow, and a first indoor heat exchanger disposed downstream of the air flow. A second indoor heat exchanger,
The low pressure side circuit includes the low pressure side heat exchanger and the first indoor heat exchanger,
The high pressure side circuit includes the high pressure side heat exchanger and the second indoor heat exchanger,
The temperature control system has the following operating modes:
a dehumidifying heating mode in which the heat medium circulates through the low-pressure side circuit and the low-pressure side circuit, respectively;
The vehicle temperature control system according to claim 12. The low pressure side circuit includes the low pressure side heat exchanger and the temperature control device,
The high pressure side circuit includes the high pressure side heat exchanger and the outdoor heat exchanger,
The temperature control system has the following operating modes:
a cooling mode in which the heat medium circulates through the low-pressure side circuit and the high-pressure side circuit, respectively;
The vehicle temperature control system according to claim 12. The low pressure side circuit includes the low pressure side heat exchanger and the outdoor heat exchanger,
The high pressure side circuit includes the high pressure side heat exchanger and the temperature control device,
The temperature control system has the following operating modes:
a heat pump mode in which the heat medium circulates through the low-pressure side circuit and the high-pressure side circuit, respectively;
The vehicle temperature control system according to claim 12. The heat medium circuit includes a temperature control device bypass path that detours the heat medium from the temperature control device,
The high pressure side circuit includes the high pressure side heat exchanger and the temperature control device bypass path,
The temperature control system is in the heat pump mode,
an activation heat pump mode in which the heat medium circulates through the low-pressure side circuit and the high-pressure side circuit, respectively;
The vehicle temperature control system according to claim 15. The heat medium circuit is configured to be able to set one of a low pressure side circuit including the low pressure side heat exchanger and a high pressure side circuit including the high pressure side heat exchanger,
The low pressure side circuit includes the low pressure side heat exchanger, the outdoor heat exchanger, and the temperature control device,
The high pressure side circuit includes the high pressure side heat exchanger, the outdoor heat exchanger, and the temperature control device.
The vehicle temperature control system according to claim 1. The circuit switching device includes:
the plurality of valves being up to five four-way valves;
a plurality of external ports, at most 12, communicating with the valve and communicating with the flow path of the heat medium circuit outside the circuit switching device;
The vehicle temperature control system according to any one of claims 1 to 17. The circuit switching device serves as the external port,
a first port communicating with the inlet side of the high pressure side heat exchanger;
a second port communicating with the outlet side of the high pressure side heat exchanger;
a third port communicating with the outlet side of the low pressure side heat exchanger;
a fourth port communicating with the inlet side of the low pressure side heat exchanger;
a fifth port communicating with the outlet side of the temperature control device;
a sixth port communicating with the inlet side of the temperature control device;
a seventh port communicating with the outlet side of the outdoor heat exchanger;
The vehicle temperature control system according to claim 18 , further comprising: an eighth port communicating with an inlet side of the outdoor heat exchanger. The heat medium circuit is
a first temperature control device that exchanges heat between the air as the temperature control target and the heat medium;
a second temperature control device corresponding to the temperature control target;
The circuit switching device includes, as the external port,
the fifth port communicating with the outlet side of the first temperature control device;
the sixth port communicating with the inlet side of the first temperature control device;
a ninth port communicating with the outlet side of the second temperature control device;
a tenth port communicating with the inlet side of the second temperature control device;
The vehicle temperature control system according to claim 19. The heat medium circuit is
The temperature control device for exchanging heat between the air as the temperature control target and the heat medium includes a first indoor heat exchanger disposed upstream of the air flow, and a first indoor heat exchanger disposed downstream of the air flow. A second indoor heat exchanger,
The circuit switching device serves as the external port,
an eleventh port communicating with the outlet side of the first indoor heat exchanger;
a 12th port communicating with the inlet side of the first indoor heat exchanger;
the fifth port communicating with the outlet side of the second indoor heat exchanger;
the sixth port communicating with the inlet side of the second indoor heat exchanger;
The vehicle temperature control system according to claim 19.

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