CN117644752A - Temperature adjusting device - Google Patents

Abstract

The invention provides a temperature adjusting device, which comprises a refrigerant circuit of a refrigerant, a water circuit of cooling water, a 1 st heat exchanger and a 2 nd heat exchanger which are arranged across the refrigerant circuit and the water circuit, an air conditioning part connected with the refrigerant circuit or the water circuit and performing heat exchange with air, and a control part. A compressor and an expansion valve are disposed in the refrigerant circuit. A drive unit for driving the vehicle and a plurality of control valves are arranged in the water circuit. The control unit switches between a 1 st mode in which the cooling water circulates in a 1 st loop passing through the drive unit and the 1 st heat exchanger and separates the 2 nd heat exchanger from the 1 st loop, and a 2 nd mode in which the cooling water circulates in a 2 nd loop passing through the drive unit and separates the 1 st heat exchanger and the 2 nd heat exchanger from the 2 nd loop.

Description

Temperature adjusting device

Technical Field

The present invention relates to a temperature control device.

Background

An electric vehicle or a hybrid vehicle is equipped with a cooling circuit for cooling a motor, a battery, and the like. In the specification of chinese patent application publication No. 108016233, a cooling system is disclosed that utilizes waste heat recovered from a motor and a battery to a temperature regulating device.

When the waste heat of the motor is used in the temperature control device, if heat is absorbed from the motor before the temperature of the motor is sufficiently increased, the driving efficiency of the motor may be lowered. As an example, if the temperature of the motor becomes too low, the viscosity of the oil filled in the housing of the motor becomes too high, resulting in a decrease in the driving efficiency of the motor. Therefore, a temperature control device capable of switching whether or not heat absorption from the motor is required according to the temperature of the motor, the outside air, and the like is required.

Disclosure of Invention

One of the objects of an exemplary embodiment of the present invention is to provide a temperature adjusting device capable of switching whether or not heat absorption from a motor is required.

An exemplary embodiment of the present invention is a temperature control device mounted on a vehicle, comprising: a refrigerant circuit through which a refrigerant flows; a water circuit through which cooling water flows; a 1 st heat exchanger and a 2 nd heat exchanger disposed across the refrigerant circuit and the water circuit, the 1 st heat exchanger and the 2 nd heat exchanger performing heat exchange between the refrigerant and the cooling water; an air conditioning unit connected to the refrigerant circuit or the water circuit and configured to exchange heat with air; and a control unit that controls the water circuit. The refrigerant circuit is provided with: a compressor that compresses the refrigerant; and an expansion valve that releases the pressure of the refrigerant. The 1 st heat exchanger is disposed on a downstream side of the compressor and on an upstream side of the expansion valve. The 2 nd heat exchanger is disposed on the downstream side of the expansion valve and on the upstream side of the compressor. The water circuit is provided with: a driving unit having a motor that drives the vehicle; and a plurality of control valves controlled by the control unit to switch the flow paths of the cooling water in the water circuit. The control unit switches between a 1 st mode in which the cooling water circulates in a 1 st loop passing through the drive unit and the 1 st heat exchanger and separates the 2 nd heat exchanger from the 1 st loop, and a 2 nd mode in which the cooling water circulates in a 2 nd loop passing through the drive unit and separates the 1 st heat exchanger and the 2 nd heat exchanger from the 2 nd loop.

According to an exemplary embodiment of the present invention, there is provided a temperature adjustment device capable of switching whether or not heat absorption from a motor is required.

The above and other features, elements, steps, features and advantages of the present invention will be more clearly understood from the following detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic view of a temperature control device according to an exemplary embodiment.

Fig. 2 is a schematic view showing a 1 st mode of the temperature adjustment device according to an exemplary embodiment.

Fig. 3 is a schematic view showing a 2 nd mode of the temperature adjustment device according to an exemplary embodiment.

Fig. 4 is a schematic view showing a 3 rd mode of the temperature adjustment device according to an exemplary embodiment.

Fig. 5 is a schematic view showing a 4 th mode of the temperature adjustment device according to an exemplary embodiment.

Fig. 6 is a schematic view showing a 5 th mode of the temperature adjustment device according to an exemplary embodiment.

Description of the reference numerals

1: a temperature adjusting device; 2: a motor; 4: a driving unit; 6: a battery; 7: a heat sink; 9t: piping (detour path); 9tt: piping (radiator path); 11: a 1 st heat exchanger; 12: a 2 nd heat exchanger; 18: a heater; 31. 32, 33, 34, 35, 36: a control valve; 31: a 1 st four-way valve; 32: a 2 nd four-way valve; 33: a 3 rd four-way valve; 60: a control unit; 80: an air conditioning unit; 83: a heater core; 84: a cooler core; 93: a compressor; 95: an expansion valve; a: port 1; b: a 2 nd port; c: 3 rd port; d: a 4 th port; e: a 5 th port; f: a 6 th port; g: a 7 th port; h: 8 th port; i: a 9 th port; j: 10 th port; k: 11 th port; l: a 12 th port; c1: a refrigerant circuit; c2: a water circuit; l1: loop 1; l2: loop 2; l3: loop 3; l4: loop 4; l5: loop 5.

Detailed Description

A temperature control device according to an embodiment of the present invention will be described below with reference to the drawings. In the drawings below, the actual structure may be different from the scale, the number, and the like of the structures for easy understanding of the structures.

Fig. 1 is a schematic view of a temperature control device 1 according to an embodiment. The temperature control device 1 is mounted in a vehicle using a motor as a power source, such as an Electric Vehicle (EV), a Hybrid Electric Vehicle (HEV), or a plug-in hybrid electric vehicle (PHV).

The temperature control device 1 includes a refrigerant circuit C1, a water circuit C2, a 1 st heat exchanger 11, a 2 nd heat exchanger 12, an air conditioning unit 80, and a control unit 60. The cooling water flows in the water circuit C2. The refrigerant flows in the refrigerant circuit C1. The control unit 60 controls the refrigerant circuit C1, the water circuit C2, and the air conditioning unit 80. The control method of the control unit 60 will be described later.

(1 st heat exchanger)

The 1 st heat exchanger 11 is disposed across the refrigerant circuit C1 and the water circuit C2, and exchanges heat between the refrigerant and the cooling water. The 1 st heat exchanger 11 includes a condenser 11a and a heat radiating portion 11b. The 1 st heat exchanger 11 condenses the refrigerant in the condenser 11a, and heats the cooling water by using the heat of condensation in the heat radiating portion 11b. That is, the 1 st heat exchanger 11 moves the heat of the refrigerant to the cooling water.

(2 nd Heat exchanger)

The 2 nd heat exchanger 12 is disposed across the refrigerant circuit C1 and the water circuit C2, and exchanges heat between the refrigerant and the cooling water. The 2 nd heat exchanger 12 has an evaporator 12a and a cooling portion 12b. The 2 nd heat exchanger 12 cools the cooling water in the cooling portion 12b, and evaporates the refrigerant in the evaporator 12a using heat extracted from the cooling water as evaporation heat. That is, the 2 nd heat exchanger 12 moves the heat of the cooling water to the refrigerant.

(refrigerant Circuit)

The refrigerant circuit C1 is provided with a compressor 93, a condenser 11a of the 1 st heat exchanger 11, a receiver 94, an expansion valve 95, and an evaporator 12a of the 2 nd heat exchanger 12. The refrigerant circuit C1 is a heat pump device. The refrigerant circuit C1 has a loop pipe 90 formed in a loop shape. The loop pipe 90 is constituted by a plurality of piping members connected to each other. The refrigerant circulates in one direction within the loop line 90. The refrigerant circulates in the loop line 90, thereby passing through the compressor 93, the condenser 11a, the receiver 94, the expansion valve 95, the evaporator 12a in this order, and returning again to the compressor 93.

The compressor 93 compresses the refrigerant passing therethrough to raise the temperature. The compressor 93 is disposed downstream of the 2 nd heat exchanger 12 and upstream of the 1 st heat exchanger 11. The compressor 93 discharges a high-pressure gas-phase refrigerant to the downstream side. The compressor 93 is electrically driven by electric power supplied from a battery 6 described later.

The condenser 11a of the 1 st heat exchanger 11 is disposed downstream of the compressor 93 and upstream of the expansion valve 95. The refrigerant passing through the condenser 11a is liquefied by being deprived of heat by the cooling water.

The liquid receiver 94 is disposed between the 1 st heat exchanger 11 and the compressor 93. That is, the receiver 94 is disposed in a high-pressure side region of the refrigerant circuit C1. The receiver 94 is a tank for storing the refrigerant that has passed through the condenser 11a of the 1 st heat exchanger 11 and is liquid. The receiver 94 absorbs the volume change of the refrigerant in the refrigerant circuit C1 by storing a part of the liquefied refrigerant.

In the present embodiment, the case where the receiver 94 is provided in the refrigerant circuit C1 has been described, but an accumulator may be provided instead of the receiver 94. In this case, the accumulator is disposed in a low-pressure region such as between the 2 nd heat exchanger 12 and the compressor 93. The accumulator performs gas-liquid separation of the refrigerant, and supplies only the refrigerant in the gas phase to the compressor 93.

The expansion valve 95 releases the pressure of the refrigerant passing therethrough to expand the refrigerant, thereby lowering the temperature. The expansion valve 95 is disposed downstream of the 1 st heat exchanger 11 and upstream of the 2 nd heat exchanger 12. The expansion valve 95 adjusts the opening degree by the control unit 60, thereby adjusting the pressure and temperature of the refrigerant on the downstream side.

The evaporator 12a of the 2 nd heat exchanger 12 is disposed downstream of the expansion valve 95 and upstream of the compressor 93. The refrigerant passing through the evaporator 12a takes heat from the cooling water and is gasified.

(air Conditioning section)

The air conditioning unit 80 includes a duct 86, a blower 85, a heater core 83, and a cooler core 84. The air conditioning unit 80 heats or cools the air in the duct 86. The air conditioning unit 80 dehumidifies the air in the duct 86. The air conditioning unit 80 of the present embodiment is connected to the water circuit C2. The air conditioning unit 80 may be connected to the refrigerant circuit C1. That is, the air conditioning unit 80 is connected to the refrigerant circuit C1 or the water circuit C2, and exchanges heat with air.

An air flow passage 86f is provided in the duct 86. The air flow path 86f is a path for supplying air outside the vehicle into the vehicle. The air flow path 86f is also a path for taking in air in the vehicle and supplying the air into the vehicle again. An air inlet 86a for allowing air outside or inside the vehicle to flow into the air flow path 86f is provided at one end side of the air flow path 86f. A blowout port 86b for exhausting air in the air flow passage 86f into the vehicle is provided at the other end side of the air flow passage 86f.

Inside the air flow path 86f, a blower 85, a cooler core 84, and a heater core 83 are disposed in this order from the intake port 86a side toward the outlet port 86b side. The blower 85 circulates air from one end side to the other end side of the air flow path 86f. That is, the cooler core 84 and the heater core 83 are disposed in the air flow path of the blower 85. The cooler core 84 cools and dehumidifies the air sent from the blower 85. On the other hand, the heater core 83 heats the air sent by the blower 85.

The air flow passage 86f is provided with a bypass flow passage 86c through which air flows bypassing the heater core 83. An air mixing damper 86d for adjusting the proportion of the air heated by the heater core 83 in the air passing through the cooler core 84 is provided upstream of the bypass flow path 86c. The air mixing damper 86d is connected to the control unit 60 and controlled.

The heater core 83 is a heat exchanger that exchanges heat between cooling water and air. The heater core 83 is connected to the water circuit C2, and heats air with cooling water. The heater core 83 heats air in the air flow path 86f sent from the blower 85 in the air conditioning unit 80.

The cooler core 84 is a heat exchanger that exchanges heat between cooling water and air. The cooler core 84 is connected to the water circuit C2, and cools the air with cooling water. The cooler core 84 cools or dehumidifies the air in the air flow path 86f sent from the blower 85 in the air conditioning unit 80.

(Water Circuit)

The water circuit C2 is provided with the heat radiation portion 11b of the 1 st heat exchanger 11, the cooling portion 12b of the 2 nd heat exchanger 12, the heater 18, the drive unit 4, the power control device 5, the battery 6, the radiator 7, the plurality of valves 31, 32, 33, 34, 35, 36, 37, 38, the 1 st pump 41, the 2 nd pump 42, and the 3 rd pump 43.

The water circuit C2 has a plurality of pipes 9 and a plurality of intersections 8. In the present specification, the reference numerals shown in fig. 1 are used to refer to the lines 9a to 9z and the lines 9tt, respectively, in the case of distinguishing the lines 9, and the reference numerals shown in fig. 1 are used to refer to the intersections 8a to 8k, respectively, in the case of distinguishing the intersections 8.

The heat radiating portion 11b of the 1 st heat exchanger 11 heats the cooling water. The cooling unit 12b of the 2 nd heat exchanger 12 cools the cooling water.

The heater 18 generates heat by being supplied with direct current from the battery 6. The heater 18 heats the cooling water. The heater 18 is controlled by the control unit 60.

The drive unit 4 has a motor 2 and an inverter 3. The motor 2 and the inverter 3 are supplied with electric power from the battery 6 to generate heat.

The motor 2 is a motor generator having both a function as a motor for driving the vehicle and a function as a generator. The motor 2 is connected to wheels of the vehicle via a deceleration mechanism, not shown. The motor 2 is driven by an alternating current supplied from the inverter 3 to rotate the wheels. Thereby, the motor 2 drives the vehicle. The motor 2 regenerates the rotation of the wheel to generate an alternating current. The generated electric power is stored in the battery 6 via the inverter 3. The housing of the motor 2 stores therein oil for cooling and lubricating each part of the motor.

The inverter 3 converts the direct current of the battery 6 into alternating current. The inverter 3 is electrically connected to the motor 2. The ac current converted by the inverter 3 is supplied to the motor 2. That is, the inverter 3 converts the direct current supplied from the battery 6 into alternating current and supplies the alternating current to the motor 2.

The power control device 5 is also called IPS (Integrated Power System: integrated power system). The power control device 5 has an AC/DC conversion circuit and a DC/DC conversion circuit. The AC/DC conversion circuit converts alternating current supplied from an external power source into direct current and supplies it to the battery 6. That is, the power control device 5 converts alternating current supplied from an external power source into direct current in an AC/DC conversion circuit and supplies the direct current to the battery 6. The DC/DC conversion circuit converts the direct current supplied from the battery 6 into a direct current having a different voltage, and supplies the direct current to the control unit 60 or the like. The power control device 5 is supplied with power from the battery 6 to generate heat.

The battery 6 supplies electric power to the motor 2 via the inverter 3. In addition, the battery 6 charges the electric power generated by the motor 2. The battery 6 may also be filled by an external power source. The battery 6 is, for example, a lithium ion battery. The battery 6 may be any secondary battery that can be repeatedly charged and discharged.

The radiator 7 is a heat exchanger that exchanges heat between outside air and cooling water. The heat sink 7 has a fan. When the temperature of the cooling water is equal to or higher than the outside air temperature, the radiator 7 discharges the heat of the cooling water to the outside air to cool the cooling water. In addition, in the case where the temperature of the cooling water is lower than the outside air temperature, the radiator 7 absorbs heat from the outside air.

The 1 st pump 41, the 2 nd pump 42, and the 3 rd pump 43 pump the cooling water in the pipe 9 disposed in one direction. The arrangement of the pumps 41, 42, 43 in the water circuit C2 of the present embodiment is an example. In the water circuit C2, only 2 or less pumps may be provided, or 4 or more pumps may be provided.

A plurality of valves 31, 32, 33, 34, 35, 36, 37, 38 are disposed in the pipe 9 to control the flow of the cooling water. The plurality of valves 31, 32, 33, 34, 35, 36, 37, 38 are classified into control valves 31, 32, 33, 34, 35, 36 and check valves 37, 38 connected to the control unit 60.

The control valves 31, 32, 33, 34, 35, 36 are connected to the control unit 60. The control valves 31, 32, 33, 34, 35, 36 are controlled by the control unit 60 to switch the flow paths of the cooling water in the water circuit C2. On the other hand, the check valves 37, 38 function independently. The check valves 37, 38 allow the cooling water to flow from one end of the upstream side toward the other end of the downstream side of the arranged piping, but do not allow the cooling water to flow from the other end toward the one end.

Some of the control valves 31, 32, 33 are four-way valves, and the other control valves 34, 35, 36 are three-way valves. In the following description, the control valves 31, 32, 33, 34, 35, 36 are referred to as a 1 st four-way valve 31, a 2 nd four-way valve 32, a 3 rd four-way valve 33, a 1 st three-way valve 34, a 2 nd three-way valve 35, and a 3 rd three-way valve 36, respectively. That is, the plurality of control valves 31, 32, 33, 34, 35, 36 include a 1 st four-way valve 31, a 2 nd four-way valve 32, a 3 rd four-way valve 33, a 1 st three-way valve 34, a 2 nd three-way valve 35, and a 3 rd three-way valve 36.

The 1 st four-way valve 31 has a 1 st port a, a 2 nd port B, a 3 rd port C, and a 4 th port D. Port 1 a is connected downstream of heat exchanger 1 via line 9a and line 9 c. Port 2B is connected downstream of heat exchanger 2 via line 9z and line 9 i. Port 3C is connected upstream of the drive unit 4 via line 9k, line 9o, line 9t (or line 9 tt) and line 9 u. Port 4D is connected upstream of battery 6 via line 9n, line 9f (or lines 9l, 9h, 9 q), line 9e, and line 9D.

The 2 nd four-way valve 32 has a 5 th port E, a 6 th port F, a 7 th port G, and an 8 th port H. The 5 th port E is connected upstream of the 1 st heat exchanger 11 via a line 9a and a line 9 r. Port 6F is connected upstream of heat exchanger 2 via line 9z and line 9 x. The 7 th port G is connected downstream of the drive unit 4 via a line 9k, a line 9y and a line 9 w. The 8 th port H is connected downstream of the battery 6 via a line 9n and a line 9 q.

The 3 rd four-way valve 33 has a 9 th port I, a 10 th port J, an 11 th port K, and a 12 th port L. Port 9I is connected downstream of line (radiator path) 9 tt. Port 10J is connected downstream of line (detour) 9 t. The 11 th port K is connected to a line 9K and a line 9y, which are circuits on the downstream side of the drive unit 4, via a line 9 v. The 12 th port L is connected upstream of the drive unit 4 via a line 9k and a line 9 o.

The 1 st four-way valve 31 and the 2 nd four-way valve 32 can take a state in which two sets of ports each of which 2 are one set are mutually communicated with each other. On the other hand, the 3 rd four-way valve 33 can be in a state in which only any 2 of the 4 ports are communicated and the remaining 2 ports are closed. The switching of the states of the four-way valves will be described.

In the present embodiment, the 1 st four-way valve 31 and the 2 nd four-way valve 32 are cooperatively controlled by the control unit 60. The control section 60 controls the 1 st four-way valve 31 and the 2 nd four-way valve 32 to switch the 1 st state and the 2 nd state.

The 1 st four-way valve 31 and the 2 nd four-way valve 32 in the 1 st state are illustrated in fig. 2 and 6. State 1 is the following state: the 1 st and 3 rd ports a and C and the 2 nd and 4 th ports D are respectively communicated in the 1 st four-way valve 31, and the 5 th and 7 th ports G and 6 th and 8 th ports F and H are respectively communicated in the 2 nd four-way valve 32.

The 1 st four-way valve 31 and the 2 nd four-way valve 32 in the 2 nd state are illustrated in fig. 3, 4, and 5. State 2 is the following state: the 1 st and 4 th ports D and 2 nd and 3 rd ports C are respectively communicated in the 1 st four-way valve 31, and the 5 th and 8 th ports H and 6 th and 7 th ports F and G are respectively communicated in the 2 nd four-way valve 32.

In the present embodiment, the 3 rd four-way valve 33 is controlled by the control unit 60. The control unit 60 communicates one of the 9 th port I and the 10 th port J with one of the 11 th port K and the 12 th port L in the 3 rd four-way valve 33. In addition, the other port that is not communicated with the 3 rd four-way valve 33 is closed.

The 1 st three-way valve 34, the 2 nd three-way valve 35, and the 3 rd three-way valve 36 are controlled by the control unit 60. The 1 st three-way valve 34, the 2 nd three-way valve 35, and the 3 rd three-way valve 36 have 3 ports, respectively. The 1 st three-way valve 34, the 2 nd three-way valve 35, and the 3 rd three-way valve 36 communicate any 2 of the 3 ports and close the remaining 1, or communicate all the ports with each other.

The plurality of pipes 9 are connected to each other to form another type of loop through which the cooling water flows. The water circuit C2 of the present embodiment has 27 pipes 9. In the present specification, the term "pipe" is used as a term indicating a path for guiding a fluid in one direction. A plurality of other pipes 9 are connected to the ends of the pipes 9 via the crossing portions 8 and the control valves 31, 32, 33, 34, 35, 36.

The intersecting portion 8 is provided at a portion where 3 pipes 9 intersect and the pipes 9 communicate with each other. The intersection 8 is for example a T-pipe joint. The water circuit C2 of the present embodiment has 11 intersections 8.

Next, the structure of each pipe 9 will be specifically described. In the description of each of the pipes 9, "one end" means an upstream end portion in the flow direction of the cooling water, and "the other end" means a downstream end portion in the flow direction of the cooling water.

One end of the pipe 9a is connected to the crossing portion 8 a. The other end of the line 9a is connected to a 1 st three-way valve 34. In the path of the pipe 9a, the 1 st pump 41, the heat radiating portion 11b of the 1 st heat exchanger 11, the heater 18, and the heater core 83 are arranged in this order from one end to the other end.

One end of the pipe 9b is connected to the 1 st three-way valve 34. The other end of the pipe 9b is connected to the crossing portion 8 a. Therefore, the pipe 9b and the pipe 9a form a loop-like path so that one end and the other end of each are connected.

One end of the pipe 9c is connected to the 1 st three-way valve 34. The other end of the pipe 9c is connected to the 1 st port a of the 1 st four-way valve 31.

One end of the pipe 9D is connected to the 4 th port D of the 1 st four-way valve 31. The other end of the pipe 9d is connected to the crossing portion 8 b.

One end of the pipe 9e is connected to the crossing portion 8 b. The other end of the pipe 9e is connected to the crossing portion 8 c.

One end of the pipe 9f is connected to the crossing portion 8 c. The other end of the pipe 9f is connected to the crossing portion 8 e. A check valve 37 is disposed in the path of the pipe 9 f.

One end of the pipe 9g is connected to the crossing portion 8 c. The other end of the pipe 9g is connected to the crossing portion 8 d.

One end of the pipe 9h is connected to the crossing portion 8 d. The other end of the line 9h is connected to a 3 rd three-way valve 36. A 3 rd pump 43 is disposed in the path of the pipe 9 h.

One end of the line 9i is connected to the 2 nd three-way valve 35. The other end of the line 9i is connected to the 2 nd port B of the 1 st four-way valve 31.

One end of the pipe 9j is connected to the crossing portion 8 g. The other end of the pipe 9j is connected to the crossing portion 8 d.

One end of the pipe 9k is connected to the crossing portion 8 f. The other end of the pipe 9k is connected to the intersection 8 g. In the path of the pipe 9k, the power control device 5, the inverter 3, and the motor 2 are disposed in this order from one end to the other end. That is, the drive unit 4 is disposed in the path of the pipe 9.

One end of the line 9l is connected to a 3 rd three-way valve 36. The other end of the pipe 9l is connected to the crossing portion 8 e.

One end of the pipe 9m is connected to the 3 rd three-way valve 36. The other end of the pipe 9m is connected to the crossing portion 8 f.

One end of the pipe 9n is connected to the crossing portion 8 e. The other end of the pipe 9n is connected to the crossing portion 8 h. A battery 6 is disposed in the path of the pipe 9 n.

One end of the pipe 9o is connected to the 12 th port L of the 3 rd four-way valve 33. The other end of the pipe 9o is connected to the crossing portion 8 f.

One end of the pipe 9p is connected to the crossing portion 8 h. The other end of the pipe 9p is connected to the crossing portion 8 b. A check valve 38 is disposed in the path of the pipe 9 p.

One end of the pipe 9q is connected to the crossing portion 8 h. The other end of the line 9q is connected to the 8 th port H of the 2 nd four-way valve 32.

One end of the pipe 9r is connected to the 5 th port E of the 2 nd four-way valve 32. The other end of the pipe 9r is connected to the crossing portion 8 a.

One end of the pipe 9s is connected to the 2 nd three-way valve 35. The other end of the pipe 9s is connected to the crossing portion 8 k. A cooler core 84 is disposed in the path of the pipe 9 s.

One end of the pipe 9t is connected to the crossing portion 8 j. The other end of the line 9t is connected to the 10 th port J of the 3 rd four-way valve 33.

One end of the pipe 9u is connected to the 3 rd port C of the 1 st four-way valve 31. The other end of the pipe 9u is connected to the intersection 8 j.

One end of the pipe 9v is connected to the 11 th port K of the 3 rd four-way valve 33. The other end of the pipe 9v is connected to the intersection 8 i.

One end of the pipe 9w is connected to the crossing portion 8 i. The other end of the line 9w is connected to the 7 th port G of the 2 nd four-way valve 32.

One end of the pipe 9x is connected to the 6 th port F of the 2 nd four-way valve 32. The other end of the pipe 9x is connected to the intersection 8 k.

One end of the pipe 9y is connected to the crossing portion 8 g. The other end of the pipe 9y is connected to the intersection 8 i.

One end of the pipe 9z is connected to the crossing portion 8 k. The other end of the line 9z is connected to a 2 nd three-way valve 35. In the path of the pipe 9z, the 2 nd pump 42 and the cooling portion 12b of the 2 nd heat exchanger 12 are disposed in this order from one end toward the other end. The pipe 9z and the pipe 9s form a loop-like path so that one end and the other end of each are connected.

One end of the pipe 9tt is connected to the crossing portion 8 j. The other end of the pipeline 9tt is connected with a 9 th port I of the 3 rd four-way valve 33. A radiator 7 is disposed in the path of the pipe 9 tt.

In the water circuit C2, one ends of the pipe 9t and the pipe 9tt are connected to the crossing portion 8j, and the other ends are connected to the 3 rd four-way valve 33. A radiator 7 is disposed in the path of the pipe 9 tt. On the other hand, no element for heating or cooling the cooling water is disposed in the path of the pipe 9 t. Therefore, the water circuit C2 has a pipe structure in which the pipe 9t and the pipe 9tt branch at the crossing portion 8j and merge again at the 3 rd four-way valve 33. The cooling water flows through only one of the pipe 9t and the pipe 9tt by the 3 rd four-way valve 33 controlled by the control unit 60. Therefore, the pipe 9tt functions as a radiator path passing through the radiator 7, and the pipe 9t functions as a detour path bypassing the radiator 7.

(modes)

The temperature control device 1 of the present embodiment can be switched between a plurality of control modes by the control of the control unit 60. The control unit 60 switches between the 1 st mode, the 2 nd mode, the 3 rd mode, the 4 th mode, and the 5 th mode. The control unit 60 controls the control valves 31, 32, 33, 34, 35, 36 to switch the flow paths of the cooling water in the water circuit C2, thereby switching the modes.

Fig. 2 shows a temperature control device 1 in mode 1, fig. 3 shows a temperature control device 1 in mode 2, fig. 4 shows a temperature control device 1 in mode 3, fig. 5 shows a temperature control device 1 in mode 4, and fig. 6 shows a temperature control device 1 in mode 5.

In the 1 st to 5 th modes, different loops are formed in the water circuit C2. On the other hand, in the 1 st to 5 th modes, a common loop is formed in the refrigerant circuit C1. In modes 1 to 5 of the present embodiment, the refrigerant circuit C1 includes the refrigerant circuit R. In the present embodiment, the "loop" refers to a loop-like path through which the refrigerant or the cooling water circulates.

The refrigerant loop R is provided in the loop pipe 90. The refrigerant loop R circulates the refrigerant through the compressor 93, the condenser 11a, the receiver 94, the expansion valve 95, and the evaporator 12a in this order.

The refrigerant in the refrigerant circuit R is compressed by the compressor 93 and discharged downstream in a high-pressure gas phase. The refrigerant discharged from the compressor 93 is liquefied by heat radiation during the passage through the condenser 11 a. The refrigerant liquefied in the condenser 11a is removed from the gas phase while passing through the receiver 94. The high-pressure liquid-phase refrigerant is depressurized by the expansion valve 95 and is gasified while passing through the evaporator 12 a. The low-pressure gas-phase refrigerant gasified in the evaporator 12a is again sucked into the compressor 93. The refrigerant loop R takes heat from the water loop C2 in the 2 nd heat exchanger 12, and transfers heat from the 1 st heat exchanger 11 to the water loop C2.

(mode 1 (dehumidification, refrigeration))

Fig. 2 is a schematic view of the temperature control device 1 in the 1 st mode.

The temperature adjustment device 1 of the 1 st mode has a 1 st loop L1, a battery loop LB, and a refrigeration loop LC. In the present embodiment, the temperature control device 1 of the 1 st mode is a mode in which dehumidification of the interior of the vehicle is performed and the drive unit 4 and the power control device 5 are cooled. The temperature control device 1 of mode 1 may perform cooling instead of dehumidification.

Loop 1L 1 is a circulation path of cooling water connecting line 9a, line 9c, line 9u, line 9tt, line 9o, line 9k, line 9y, line 9w, and line 9 r. The battery loop LB is a circulation path of the cooling water connecting the pipe 9e, the pipe 9g, the pipe 9h, the pipe 9l, the pipe 9n, and the pipe 9 p. The refrigeration circuit LC is a path of cooling water connecting the pipe 9s and the pipe 9 z.

The control unit 60 changes the temperature control device 1 to the 1 st mode by switching the control valves 31, 32, 33, 34, 35, 36 as follows.

The control unit 60 sets the 1 st four-way valve 31 and the 2 nd four-way valve 32 to the 1 st state. That is, the control unit 60 communicates the 1 st port a and the 3 rd port C of the 1 st four-way valve 31, and communicates the 5 th port E and the 7 th port G of the 2 nd four-way valve 32. Thus, the control unit 60 connects the line 9c to the line 9u, and connects the line 9w to the line 9 r.

The control unit 60 connects the line 9tt to the line 9o by communicating the 9 th port I and the 12 th port L of the 3 rd four-way valve 33.

The control unit 60 connects the line 9a to the line 9c in the 1 st three-way valve 34, and closes the line 9b.

The control unit 60 connects the line 9z to the line 9s in the 2 nd three-way valve 35, and closes the line 9i.

The control unit 60 connects the line 9h with the line 9l in the 3 rd three-way valve 36 and closes the line 9m.

The 1 st loop L1 circulates the cooling water in the order of the 1 st pump 41, the heat radiating portion 11b of the 1 st heat exchanger 11, the heater 18, the heater core 83, the radiator 7, the power control device 5, and the driving unit 4. The cooling water of the 1 st loop L1 is pumped by the 1 st pump 41. The cooling water pumped by the 1 st pump 41 passes through each portion of the 1 st loop L1 in the order of the heat radiation portion 11b of the 1 st heat exchanger 11, the heater 18, the heater core 83, the radiator 7, the power control device 5, and the drive unit 4, and returns to the 1 st pump 41 again.

In the 1 st loop L1, the cooling water is heated in the power control device 5, the driving unit 4, and the heat radiating portion 11 b. In addition, in the 1 st loop L1, the cooling water is cooled in the heater core 83 and the radiator 7. That is, the cooling water circulating in the 1 st loop L1 moves the heat of the power control device 5, the driving unit 4, and the heat radiating portion 11b to the air in the duct 86 in the heater core 83. According to the present embodiment, the waste heat of the power control device 5 and the driving unit 4 can be utilized in the heater core 83, and therefore, the temperature adjustment device 1 with high energy efficiency can be provided.

The heater 18 is controlled by the control unit 60, and heats the cooling water when the temperature of the passing cooling water is insufficient for heating the air in the heater core 83. That is, the heater 18 is operated to supplement the heating of the cooling water when the driving unit 4, the power control device 5, and the heat radiating portion 11b do not sufficiently heat the cooling water.

In the 1 st mode, the control unit 60 may switch the path passing through the 1 st loop L1 from the line 9tt to the line 9t by operating the 3 rd four-way valve 33, and circulate the cooling water in the path bypassing the radiator 7. That is, the control unit 60 in the 1 st mode can switch between the pipe (radiator path) 9tt passing through the radiator 7 and the pipe (detour path) 9t bypassing the radiator 7 on the downstream side of the 1 st heat exchanger 11 and on the upstream side of the drive unit 4 in the 1 st loop L1. According to the present embodiment, the control unit 60 can select whether or not the cooling water of the 1 st loop L1 passes through the radiator 7, and can suppress excessive cooling of the motor 2 due to, for example, cooling of the cooling water in the radiator 7.

The battery loop LB circulates cooling water in the order of the 3 rd pump 43 and the battery 6. The cooling water of the battery loop LB is pumped by the 3 rd pump 43.

The battery loop LB circulates cooling water from the outlet to the inlet of the battery 6 until heat balance is generated. This makes it possible to make the temperature distribution among the battery cells of the battery 6 uniform. If the temperature distribution of the plurality of battery cells is deviated, the battery 6 may have a local characteristic decrease. According to the present embodiment, the battery loop LB suppresses the deviation in the temperature distribution among the battery cells of the battery 6, thereby stabilizing the performance of the battery 6.

The refrigeration circuit LC circulates the cooling water in the order of the 2 nd pump 42, the cooling portion 12b of the 2 nd heat exchanger 12, and the cooler core 84. The cooling water of the refrigeration loop LC is pumped by the 2 nd pump 42. The cooling water circulating in the refrigeration circuit LC extracts heat from the air in the cooler core 84, and transfers the heat to the refrigerant in the refrigerant circuit C1 in the 2 nd heat exchanger 12.

In the air conditioning unit 80 of mode 1, which performs dehumidification, the air mixing damper 86d opens the flow path port on the side of the air outlet 86 b. Accordingly, in the air flow path 86f in the duct 86, air flows from the air inlet 86a side toward the air outlet 86b side. When the air flowing through the air flow passage 86f passes through the cooler core 84, moisture is condensed and dehumidified. Then, the air flowing through the air flow passage 86f is heated by the heater core 83 and blown out into the vehicle from the air outlet 86 b. In addition, the cooling in the vehicle may be performed in the 1 st mode. In this case, the air mixing damper 86d closes the flow port on the side of the outlet 86b, and opens the bypass flow path 86c (see fig. 5). This allows air cooled by the cooler core 84 to be sent into the vehicle interior without passing through the heater core 83.

(mode 1 (heating of motor))

In the mode 1 of fig. 1, the dehumidification of the vehicle interior is described, but the air blowing by the blower 85 may be stopped and the motor 2 may be heated by the water circuit C2. When the blower 85 is stopped in the 1 st mode, air does not pass through the heater core 83, and therefore heat exchange between the cooling water and the air is difficult in the heater core 83. Therefore, the heat of the cooling water flowing through the 1 st loop L1 heated by the heat radiating portion 11b of the 1 st heat exchanger 11 is mainly discharged to the outside air through the radiator 7. When the 3 rd four-way valve 33 is switched to pass through the pipe (bypass path) 9t bypassing the radiator 7 in the 1 st loop L1, the heat of the cooling water heated by the heat radiating portion 11b reaches the motor 2 and is used for heating the motor 2.

In a case where the vehicle is in an extremely low-temperature environment, the liquid temperature of the oil stored in the housing of the motor 2 is reduced and the viscosity is increased. When the viscosity of the oil is extremely increased, the driving efficiency of the motor 2 is lowered. According to mode 1 of the present embodiment, the heat received from the refrigerant circuit C1 in the 1 st heat exchanger 11 can be used for heating the motor 2. This can heat the oil of the motor 2, reduce the viscosity of the oil, and improve the driving efficiency of the motor 2.

(mode 2)

Fig. 3 is a schematic view of the temperature control device 1 in the 2 nd mode.

The temperature control device 1 of the 2 nd mode has a 2 nd loop L2, an endothermic loop LE, and a heating loop LH. In the present embodiment, the temperature control device 1 of the 2 nd mode is a mode for heating the vehicle interior.

Loop 2L 2 is a circulation path of cooling water connecting line 9h, line 9L, line 9n, line 9p, line 9e, line 9g, line 9m, line 9k, and line 9 j. Loop 2L 2 is a parallel loop branched by three-way valve 36 of 3 and joined at intersection 8 d. The heat absorption loop LE is a circulation path of cooling water connecting the pipe 9z, the pipe 9i, the pipe 9u, the pipe 9tt, the pipe 9v, the pipe 9w, and the pipe 9 x. The heating circuit LH is a circulation path of the cooling water connecting the pipe 9a and the pipe 9 b.

The control unit 60 changes the temperature control device 1 to the 2 nd mode by switching the control valves 31, 32, 33, 34, 35, 36 as follows.

The control unit 60 sets the 1 st four-way valve 31 and the 2 nd four-way valve 32 to the 2 nd state. That is, the control unit 60 communicates the 2 nd port B and the 3 rd port C of the 1 st four-way valve 31, and communicates the 7 th port G and the 6 th port F of the 2 nd four-way valve 32. Thus, the control unit 60 connects the line 9i to the line 9u, and connects the line 9x to the line 9 w.

The control unit 60 connects the line 9tt to the line 9v by communicating the 9 th port I and the 11 th port K of the 3 rd four-way valve 33.

The control unit 60 connects the line 9a to the line 9b and closes the line 9c in the 1 st three-way valve 34.

The control unit 60 connects the line 9z to the line 9i in the 2 nd three-way valve 35, and closes the line 9s.

The control unit 60 connects the line 9h, the line 9l, and the line 9m to the 3 rd three-way valve 36.

The 2 nd loop L2 circulates the cooling water in the order of the 3 rd pump 43, the power control device 5, and the driving unit 4, and circulates the cooling water in the order of the 3 rd pump 43 and the battery 6. The cooling water of the 2 nd loop L2 is pumped by the 3 rd pump 43. The cooling water pumped by the 3 rd pump 43 branches off at the 3 rd three-way valve 36, and one part passes through the power control device 5 and the driving unit 4, and the other part passes through the battery 6. The cooling water branched in the 2 nd loop L2 merges at the intersection 8d and returns to the 3 rd pump 43.

The cooling water in the 2 nd loop L2 circulates through the power control device 5, the driving unit 4, and the battery 6, thereby making the temperatures of the power control device 5, the driving unit 4, and the battery 6 uniform. Thereby, the local increase in temperature of the power control device 5, the drive unit 4, and the battery 6 is suppressed. In addition, the cooling water radiates heat from the pipe 9 when flowing through the pipe 9 constituting the 2 nd loop L2. Therefore, by circulating the cooling water through the 2 nd loop L2, the power control device 5, the drive unit 4, and the battery 6 can be cooled. The cooling water in the 2 nd loop L2 can make the temperature distribution among the battery cells of the battery 6 uniform, and thus the performance of the battery 6 is stabilized.

In the 2 nd mode, the motor 2 may be operated while actively generating heat to heat the cooling water in the 2 nd loop L2 by the motor 2. Here, "actively heating the motor" means that electric energy which is not converted into kinetic energy is excessively supplied to the motor 2, and the coil of the motor 2 is heated by converting the excessively supplied electric energy into thermal energy.

The battery 6 may have characteristics degraded not only when the temperature is too high but also when the temperature is too low. If the temperature of the motor 2 is too low, the viscosity of the oil increases, and the driving efficiency decreases. By actively heating the motor 2 to heat the cooling water in the 2 nd mode, the temperature of the battery 6 and the oil temperature of the motor 2 can be increased. This stabilizes the characteristics of the battery 6 and improves the driving efficiency of the motor 2.

In the 2 nd loop L2 of the present embodiment, a mixing valve may be used as the 3 rd three-way valve 36 in order to adjust the ratio of the flow rate of the cooling water branched to the power control device 5 and the driving unit 4 and the flow rate of the cooling water branched to the battery 6. In this case, the control unit 60 can adjust the ratio of the flow rate of the cooling water passing through the power control device 5 and the driving unit 4 to the flow rate of the cooling water flowing through the battery 6, according to the temperatures of the power control device 5, the driving unit 4, and the battery 6.

The heat absorption loop LE circulates the cooling water in the order of the 2 nd pump 42, the cooling portion 12b of the 2 nd heat exchanger 12, and the radiator 7. The cooling water of the heat absorption loop LE is pumped by the 2 nd pump 42. In the heat absorption loop LE, the cooling water receives heat from outside air in the radiator 7, and transfers heat to the refrigerant in the refrigerant circuit C1 in the 2 nd heat exchanger 12. The heat transferred to the refrigerant circuit C1 in the 2 nd heat exchanger 12 is transferred to the refrigerant circuit C1 again in the 1 st heat exchanger 11, and is used for heating in the heating circuit LH.

The heating circuit LH circulates the cooling water in the order of the 1 st pump 41, the heat radiating portion 11b of the 1 st heat exchanger 11, and the heater core 83. The cooling water in the heating circuit LH is pumped by the 1 st pump 41. In the heating loop LH, the cooling water is heated in the heat radiating portion 11 b. In addition, in the 1 st loop L1, the cooling water is cooled in the heater core 83. The cooling water circulating in the 1 st loop L1 moves the heat of the heat radiating portion 11b to the air in the heater core 83. The heater 18 is controlled by the control unit 60, and heats the cooling water when the temperature of the passing cooling water is insufficient for heating the air in the heater core 83.

In the air conditioning unit 80 of mode 2, the air mixing damper 86d opens the flow path port on the side of the air outlet 86 b. Accordingly, in the air flow path 86f in the duct 86, air flows from the air inlet 86a side toward the air outlet 86b side. The air flowing in the air flow passage 86f passes through the cooler core 84, but since the cooling water does not flow in the cooler core 84, heat exchange between the cooling water and the air in the cooler core 84 does not occur. The air flowing through the air flow passage 86f is heated by the heater core 83 and blown out into the vehicle from the air outlet 86 b.

In the 2 nd mode of the present embodiment, the 2 nd loop L2 passes through the driving unit 4 and is separated from the 1 st heat exchanger 11 and the 2 nd heat exchanger 12. Therefore, in the 2 nd mode, the driving unit 4 is not affected by the cooling water heated through the 1 st heat exchanger 11 and the cooling water cooled through the 2 nd heat exchanger 12. The cooling water of the water circuit C2 can heat the air by supplying the heat transferred from the heat radiating portion 11b to the heater core 83 without supplying the heat to the driving unit 4 by separating the driving unit 4 from the 1 st heat exchanger 11. Therefore, the air conditioning unit 80 can perform high-speed heating of the air in the vehicle. Further, by separating the drive unit 4 from the 2 nd heat exchanger 12, it is possible to suppress an increase in viscosity of the oil of the motor 2 due to the motor 2 being excessively cooled by the cooling water.

(mode 3)

Fig. 4 is a schematic view of the temperature control device 1 in the 3 rd mode.

The temperature control device 1 of the 3 rd mode has a 3 rd loop L3, a battery loop LB, and a heating loop LH. In the present embodiment, the temperature control device 1 in the 3 rd mode is a mode for heating the vehicle interior.

Since the battery loop LB has the same configuration as that described in mode 1, the description thereof is omitted here. Since the heating circuit LH has the same configuration as that described in mode 2, the description thereof is omitted here.

Loop 3L 3 is a circulation path of cooling water connecting line 9z, line 9i, line 9u, line 9t, line 9o, line 9k, line 9y, line 9w, and line 9 x.

The control unit 60 changes the temperature control device 1 to the 3 rd mode by switching the control valves 31, 32, 33, 34, 35, 36 as follows.

The control unit 60 sets the 1 st four-way valve 31 and the 2 nd four-way valve 32 to the 2 nd state. That is, the control unit 60 communicates the 2 nd port B and the 3 rd port C of the 1 st four-way valve 31, and communicates the 7 th port G and the 6 th port F of the 2 nd four-way valve 32. Thus, the control unit 60 connects the line 9i to the line 9u, and connects the line 9x to the line 9 w.

The control unit 60 connects the line 9t and the line 9o by communicating the 10 th port J and the 12 th port L of the 3 rd four-way valve 33.

The control unit 60 connects the line 9a to the line 9b and closes the line 9c in the 1 st three-way valve 34.

The control unit 60 connects the line 9z to the line 9i in the 2 nd three-way valve 35, and closes the line 9s.

The control unit 60 connects the line 9h with the line 9l in the 3 rd three-way valve 36 and closes the line 9m.

The 3 rd loop L3 circulates the cooling water in the order of the 2 nd pump 42, the cooling portion 12b of the 2 nd heat exchanger 12, the power control device 5, and the driving unit 4. The cooling water of the 3 rd loop L3 is pumped by the 3 rd pump 43.

The cooling water of the 3 rd loop L3 is cooled by the cooling portion 12b when passing through the cooling portion 12b of the 2 nd heat exchanger 12. The cooling water in the 3 rd loop L3 cools the power control device 5 and the driving unit 4 when passing through the power control device 5 and the driving unit 4. That is, the cooling water in the 3 rd loop L3 receives heat from the power control device 5 and the drive unit 4, and transfers the heat to the refrigerant loop C1 in the 2 nd heat exchanger 12.

According to the present embodiment, the power control device 5 and the driving unit 4 can be cooled, and the power control device 5 and the driving unit 4 can be stably operated. The heat transferred to the refrigerant circuit C1 in the 2 nd heat exchanger 12 is transferred to the refrigerant circuit C1 again in the 1 st heat exchanger 11, and is used for heating in the heating circuit LH. According to the present embodiment, waste heat of the power control device 5 and the driving unit 4 can be utilized for heating, and the temperature control device 1 having high energy efficiency can be provided.

In the 3 rd mode, the motor 2 may be operated while actively generating heat to heat the cooling water in the 3 rd loop L3 by the motor 2. By actively heating the motor 2 to heat the cooling water, heat can be actively transferred to the refrigerant circuit C1 via the 2 nd heat exchanger 12, and high-speed heating in the air conditioning unit 80 can be performed.

In the air conditioning unit 80 of mode 3, the air mixing damper 86d opens the flow path port on the side of the air outlet 86 b. Accordingly, in the air flow path 86f in the duct 86, air flows from the air inlet 86a side toward the air outlet 86b side. The air flowing in the air flow passage 86f passes through the cooler core 84, but since the cooling water does not flow in the cooler core 84, heat exchange between the cooling water and the air in the cooler core 84 does not occur. The air flowing through the air flow passage 86f is heated by the heater core 83 and blown out into the vehicle from the air outlet 86 b.

In the 3 rd mode, the control unit 60 can switch the path passing through the 3 rd loop L3 from the line 9t to the line 9tt. That is, the control unit 60 in the 3 rd mode can switch between the pipe (radiator path) 9tt passing through the radiator 7 and the pipe (detour path) 9t bypassing the radiator 7 on the downstream side of the 2 nd heat exchanger 12 and on the upstream side of the drive unit 4 in the 3 rd loop L3. According to the present embodiment, the control unit 60 can select whether or not the cooling water of the 3 rd loop L3 passes through the radiator 7. For example, when the temperature of the cooling water flowing into the radiator 7 is lower than the outside air temperature, the radiator 7, the driving unit 4, and the power control device 5 can be used as a heat source for heating by connecting the radiator path. On the other hand, when the temperature of the cooling water flowing into the radiator 7 is higher than the outside air temperature, by connecting the detour path, it is possible to prevent the heat from escaping from the radiator 7 to the outside air, and at the same time, to suppress the motor 2 from being excessively cooled due to the cooling of the cooling water in the radiator 7. This makes it possible to provide the temperature control device 1 having a heating function with high energy efficiency using waste heat while preventing heat from escaping to the outside air.

(mode 4)

Fig. 5 is a schematic view of the temperature control device 1 in the 4 th mode.

The temperature adjustment device 1 of the 4 th mode has a 4 th loop L4 and a motor loop LM. In the present embodiment, the temperature control device 1 of the 4 th mode is a mode in which the battery 6 is mainly heated. The temperature control device 1 of the 4 th mode preferably further includes either a cooling circuit LC (see fig. 2) or an endothermic circuit LE (see fig. 3).

The 4 th loop L4 is a circulation path of cooling water connecting the pipe 9a, the pipe 9c, the pipe 9d, the pipe 9e, the pipe 9f, the pipe 9n, the pipe 9q, and the pipe 9 r. The motor loop LM is a circulation path of cooling water connecting the pipe 9h, the pipe 9m, the pipe 9k, and the pipe 9 j.

The control unit 60 changes the temperature control device 1 to the 4 th mode by switching the control valves 31, 32, 33, 34, 35, 36 as follows.

The control unit 60 sets the 1 st four-way valve 31 and the 2 nd four-way valve 32 to the 2 nd state. That is, the control unit 60 communicates the 1 st port a and the 4 th port D of the 1 st four-way valve 31, and communicates the 5 th port E and the 8 th port H of the 2 nd four-way valve 32. Thus, the control unit 60 connects the line 9d to the line 9c, and connects the line 9r to the line 9 q.

The control unit 60 connects the line 9a to the line 9c in the 1 st three-way valve 34, and closes the line 9b.

The control unit 60 connects the line 9h to the line 9m in the 3 rd three-way valve 36, and closes the line 9l.

The 4 th loop L4 circulates the cooling water in the order of the 1 st pump 41, the heat radiating portion 11b of the 1 st heat exchanger 11, the heater 18, the heater core 83, and the battery 6. The cooling water of the 4 th loop L4 is pumped by the 1 st pump 41. The cooling water pumped by the 1 st pump 41 passes through the portions of the 4 th loop L4 in the order of the heat radiating portion 11b of the 1 st heat exchanger 11, the heater 18, the heater core 83, and the battery 6.

In the 4 th loop L4, the cooling water is heated in the heat radiating portion 11 b. In addition, in the 4 th loop L4, the cooling water is cooled in the battery 6. The cooling water circulating in the 4 th loop L4 moves the heat of the heat radiating portion 11b toward the battery 6. According to the present embodiment, the battery 6 can be heated using the heat received from the refrigerant circuit C1 in the 1 st heat exchanger 11, and the characteristics of the battery 6 can be stabilized. The heater 18 is controlled by the control unit 60, and heats the cooling water when the temperature of the cooling water passing therethrough is insufficient for heating the battery 6.

The motor loop LM circulates the cooling water in the order of the 3 rd pump 43, the power control device 5, and the drive unit 4. The cooling water of the motor loop LM is pumped by the 3 rd pump 43. The cooling water of the motor loop LM circulates through the power control device 5 and the drive unit 4 until a heat balance is generated. This makes it possible to make the temperatures of the power control device 5 and the driving unit 4 uniform, and to suppress local increases in the temperatures of the power control device 5 and the driving unit 4. In addition, the cooling water radiates heat from the pipe 9 when flowing through the pipe 9 constituting the motor loop LM. Therefore, the cooling water circulates in the motor loop LM, whereby the electric power control device 5 and the drive unit 4 can be cooled.

In the air conditioning unit 80 of mode 4, the air mixing damper 86d closes the flow port on the side of the outlet 86b, and opens the bypass flow path 86 c. Thereby, the air conditioning unit 80 suppresses heat exchange between the cooling water and the air in the heater core 83. The air conditioning unit 80 suppresses a decrease in the temperature of the cooling water when passing through the heater core 83, and improves the heating efficiency of the battery 6 by the cooling water.

(mode 5)

Fig. 6 is a schematic view of the temperature control device 1 in the 5 th mode.

The temperature adjustment device 1 of the 5 th mode has a 5 th loop L5 and a motor loop LM. In the present embodiment, the temperature control device 1 of the 5 th mode is a mode for mainly cooling the battery 6. The temperature control device 1 of the 5 th mode may further include a heating circuit LH (see fig. 3 and 4), and the temperature control device 1 of the 5 th mode may include a 1 st circuit L1 (see fig. 2) instead of the motor circuit LM. Since the motor loop LM has the same configuration as that described in the 4 th mode, a description thereof is omitted here.

Loop 5L 5 is a circulation path of cooling water connecting line 9z, line 9i, line 9d, line 9e, line 9f, line 9n, line 9q, and line 9 x.

The control unit 60 changes the temperature control device 1 to the 5 th mode by switching the control valves 31, 32, 33, 34, 35, 36 as follows.

The control unit 60 sets the 1 st four-way valve 31 and the 2 nd four-way valve 32 to the 1 st state. That is, the control unit 60 communicates the 2 nd port B and the 4 th port D of the 1 st four-way valve 31, and communicates the 6 th port F and the 8 th port H of the 2 nd four-way valve 32. Thus, the control unit 60 connects the line 9i to the line 9d, and connects the line 9q to the line 9 x.

The control unit 60 connects the line 9z to the line 9i in the 2 nd three-way valve 35, and closes the line 9s.

The control unit 60 connects the line 9h to the line 9m in the 3 rd three-way valve 36, and closes the line 9l.

The 5 th loop L5 circulates the cooling water in the order of the 2 nd pump 42, the cooling portion 12b of the 2 nd heat exchanger 12, and the battery 6. The cooling water of the 5 th loop L5 is pumped by the 2 nd pump 42. The cooling water pumped by the 2 nd pump 42 passes through each portion of the 5 th loop L5 in the order of the cooling portion 12b of the 2 nd heat exchanger 12 and the battery 6.

In the 5 th loop L5, the cooling water is cooled by the cooling unit 12b and heated by the battery 6. The cooling water circulating through the 5 th loop L5 moves the heat of the battery 6 to the cooling portion 12 b. According to the present embodiment, since the heat of the battery 6 can be transferred to the refrigerant circuit C1 in the 2 nd heat exchanger 12, the battery 6 can be cooled effectively, and the characteristics of the battery 6 can be stabilized.

(summary)

According to the present embodiment, the control unit 60 switches between the 1 st mode and the 2 nd mode. That is, the control method of the present embodiment switches between the 1 st mode and the 2 nd mode. As shown in fig. 2, the 1 st mode is a mode in which the cooling water is circulated in the 1 st loop L1 passing through the driving unit 4 and the 1 st heat exchanger 11, and the 2 nd heat exchanger 12 is separated from the 1 st loop L1. As shown in fig. 3, the 2 nd mode is a mode in which cooling water is circulated in the 2 nd loop L2 passing through the driving unit 4, and the 1 st heat exchanger 11 and the 2 nd heat exchanger 12 are separated from the 2 nd loop L2.

As shown in fig. 2, according to mode 1 of the present embodiment, the cooling water can be caused to flow in the 1 st loop L1 passing through the drive unit 4 and the 1 st heat exchanger 11. In this way, in the 1 st mode, the waste heat of the driving unit 4 is sent to the heater core 83 together with the heat obtained from the 1 st heat exchanger 11, and can be used for heating the air during heating and dehumidification. In the 1 st mode, the driving unit 4 may be heated by the heat obtained from the 1 st heat exchanger 11. Further, since the 1 st loop L1 of the present embodiment passes through the heater core 83, the heat of the cooling water moving to the 1 st loop L1 can be used to heat the room.

As shown in fig. 3, according to the 2 nd mode of the present embodiment, the 2 nd loop L2 passing through the driving unit 4 is cut off from the 1 st heat exchanger 11 and the 2 nd heat exchanger 12. In this way, in the 2 nd mode, the heat extracted from the refrigerant circuit C1 or the heat transferred from the refrigerant circuit C1 can be directly used for temperature adjustment of the air in the air conditioning unit 80 without using the cooling or heating of the motor 2. Therefore, in the 2 nd mode, the air conditioning unit 80 can perform high-speed heating or high-speed cooling at room temperature.

In the 2 nd mode of the present embodiment, the temperature of the driving unit 4 is not easily affected by the temperature of the cooling water passing through the 1 st heat exchanger 11 and the 2 nd heat exchanger 12. Therefore, the cooling water cooling driving unit 4 can be suppressed from being in a path for discharging heat to the outside air when the temperature outside the vehicle is extremely low. Therefore, the temperature rise of the motor 2 immediately after the start-up can be suppressed from being hindered by the low-temperature cooling water, and the liquid temperature of the oil of the motor 2 can be raised immediately after the start-up.

According to the present embodiment, the control unit 60 can switch between the 1 st mode and the 2 nd mode according to the temperature of the drive unit 4, the temperature of the inside of the vehicle, the temperature of the outside air, the on/off operation of cooling or heating, and the like. Therefore, the control unit 60 can effectively perform the operation of the driving unit 4 and the adjustment of the temperature in the vehicle by the air conditioning unit 80. The control unit 60 can be switched to the 3 rd mode in addition to the 1 st mode and the 2 nd mode. Therefore, the control unit 60 can realize an air conditioning function of cooling, heating, and dehumidifying while further effectively driving the entire temperature control device 1. Further, by switching to the 4 th and 5 th modes, the temperature of the battery 6 can be adjusted with high accuracy. In the present embodiment, only the 1 st to 5 th modes are described as modes of the temperature control device 1, but the temperature control device 1 may have other modes.

In the 2 nd mode of the present embodiment, the 2 nd loop L2 also passes through the battery 6. In the 2 nd mode of the present embodiment, the temperature of the battery 6 is less susceptible to the temperature of the cooling water passing through the 1 st heat exchanger 11 and the 2 nd heat exchanger 12. In addition, the battery 6 can be heated by the waste heat of the motor 2. This can appropriately raise the temperature of the battery 6. In the 2 nd loop L2 of the present embodiment, the driving unit 4 and the battery 6 are connected in parallel. By adopting such a piping structure, it is easy to form a loop through the drive unit 4 and a loop through the battery 6, respectively, among loops formed by the modes, and it is easy to set the optimum temperatures of the drive unit 4 and the battery 6, respectively.

As shown in fig. 4, according to the present embodiment, the control unit 60 can further switch the temperature adjustment device 1 to the 3 rd mode. That is, the control method of the present embodiment can further switch the temperature control device 1 to the 3 rd mode. The 3 rd mode is a mode in which the cooling water is circulated through the 3 rd loop L3 passing through the driving unit 4, the 2 nd heat exchanger 12, and the radiator 7, and the 1 st heat exchanger 11 is separated from the 3 rd loop L3.

According to the present embodiment, since the 3 rd loop L3 passes through the 2 nd heat exchanger 12 and the driving unit 4, the driving unit 4 can be cooled using the cooling water cooled by the 2 nd heat exchanger 12. Further, since the waste heat of the drive unit 4 can be transmitted to the refrigerant circuit C1 via the 2 nd heat exchanger 12, the heat can be utilized for heating. This can realize heating with high energy efficiency by using the waste heat of the driving unit 4.

According to the present embodiment, the control unit 60 can switch between 2 modes (the 2 nd mode and the 3 rd mode) in which heating in the vehicle is performed. In the 3 rd loop L3 of the 3 rd mode, the cooling water passing through the 2 nd heat exchanger 12 passes through the driving unit 4, and therefore, in a case where the outside air temperature is extremely low or the like, there is a possibility that the motor 2 is excessively cooled by the cooling water. In contrast, in the 2 nd loop L2 of the 2 nd mode, the temperature of the motor 2 can be suppressed from becoming too low due to the cooling water. According to the present embodiment, the control unit 60 can select a mode with high efficiency as a whole by switching between 2 modes for heating according to the main cause such as the outside air temperature.

According to the present embodiment, the control unit 60 can switch the temperature adjustment device 1 to the 4 th mode. That is, the control method of the present embodiment can switch the temperature control device 1 to the 4 th mode. The 4 th mode is a mode in which cooling water is circulated in the 4 th loop L4 passing through the battery 6 and the 1 st heat exchanger 11. According to the present embodiment, the battery 6 can be heated using the heat received from the refrigerant circuit C1 in the 1 st heat exchanger 11, and the characteristics of the battery 6 can be stabilized.

According to the present embodiment, the control unit 60 can be switched to the 5 th mode. That is, the control method of the present embodiment can be switched to the 5 th mode. The 5 th mode is a mode in which cooling water is circulated in the 5 th loop L5 passing through the battery 6 and the 2 nd heat exchanger 12. According to the present embodiment, heat of the battery 6 can be transferred to the refrigerant circuit C1 in the 2 nd heat exchanger 12. This not only cools the battery 6, but also uses the heat of the battery 6 for heating.

According to the present embodiment, the plurality of control valves include a 1 st four-way valve 31 and a 2 nd four-way valve 32. Therefore, by switching the 1 st four-way valve 31 and the 2 nd four-way valve 32 by the control unit 60, the number of control valves can be suppressed while forming various loops in the water circuit C2 in each mode. This can simplify the piping structure of the water circuit C2.

According to the present embodiment, the plurality of control valves includes a 3 rd four-way valve 33. Therefore, by switching the 3 rd four-way valve 33 by the control unit 60, in each mode, it is possible to easily control which of the piping (radiator path) 9tt and the piping (bypass path) 9t the refrigerant passes through while suppressing the number of control valves.

While the embodiments and modifications of the present invention have been described above, the structures and combinations thereof in the embodiments and modifications are merely examples, and the structures may be added, omitted, substituted, and other modified without departing from the spirit of the present invention. The present invention is not limited to the embodiments.

For example, in the above embodiment, the case where the heater core 83 and the cooler core 84 of the air conditioner 80 are disposed in the water circuit C2 is described. Therefore, the heater core 83 and the cooler core 84 of the above embodiment exchange heat between the cooling water and the air. However, one or both of the heater core and the cooler core of the air conditioning unit may be disposed in the refrigerant circuit C1, and heat exchange may be performed between the refrigerant and the air. That is, the air conditioning unit 80 may be connected to the refrigerant circuit C1 or the water circuit C2 and may exchange heat with air.

For example, a mixing valve may be used for the 1 st three-way valve 34, and the cooling water may be caused to flow through the lines 9b and 9c in the 4 th mode. In addition, a mixing valve may be used for the 2 nd three-way valve 35, and the cooling water may be made to flow through the line 9i and the line 9s in the 5 th mode. In addition, a mixing valve may be used in the crossing portion 8b or 8h, and the cooling water may be caused to flow through the pipe 9p in the 4 th and 5 th modes. This allows the control unit 60 to control the respective mixing valves, thereby making it possible to precisely perform the heating and cooling of the battery 6 and the homogenization of the temperature distribution among the battery cells.

For example, the structure may be as follows: in addition to the line 9l and the line 9g, the power control device 5 and the battery 6 are separated in the water circuit from the 1 st four-way valve 31 to the 2 nd four-way valve 32. In this case, the check valve 38 preferably becomes a pump.

The present technology may have the following configuration.

(1) A temperature control device mounted on a vehicle, the temperature control device comprising: a refrigerant circuit through which a refrigerant flows; a water circuit through which cooling water flows; a 1 st heat exchanger and a 2 nd heat exchanger disposed across the refrigerant circuit and the water circuit, the 1 st heat exchanger and the 2 nd heat exchanger performing heat exchange between the refrigerant and the cooling water; an air conditioning unit connected to the refrigerant circuit or the water circuit and configured to exchange heat with air; and a control unit that controls the water circuit. The refrigerant circuit is provided with: a compressor that compresses the refrigerant; and an expansion valve that releases the pressure of the refrigerant. The 1 st heat exchanger is disposed on a downstream side of the compressor and on an upstream side of the expansion valve. The 2 nd heat exchanger is disposed on the downstream side of the expansion valve and on the upstream side of the compressor. The water circuit is provided with: a driving unit having a motor that drives the vehicle; and a plurality of control valves controlled by the control unit to switch the flow paths of the cooling water in the water circuit. The control unit switches between a 1 st mode in which the cooling water circulates in a 1 st loop passing through the drive unit and the 1 st heat exchanger and separates the 2 nd heat exchanger from the 1 st loop, and a 2 nd mode in which the cooling water circulates in a 2 nd loop passing through the drive unit and separates the 1 st heat exchanger and the 2 nd heat exchanger from the 2 nd loop.

(2) The temperature control device according to (1), wherein a radiator that exchanges heat between outside air and the cooling water is disposed in the water circuit, and the control unit further switches a 3 rd mode in which the cooling water circulates in a 3 rd loop that passes through the drive unit, the 2 nd heat exchanger, and the radiator, and the 1 st heat exchanger is separated from the 3 rd loop.

(3) The temperature adjustment device according to (1) or (2), wherein a battery is provided in the water circuit, and in the 2 nd mode, the 2 nd loop further passes through the battery.

(4) The temperature adjusting device according to (3), wherein in the 2 nd loop, the driving unit and the battery are connected in parallel.

(5) The temperature control device according to any one of (1) to (4), wherein a battery is disposed in the water circuit, and the control unit further switches a 4 th mode, and the 4 th mode is a mode in which the cooling water is circulated through a 4 th loop that passes through the battery and the 1 st heat exchanger.

(6) The temperature control device according to any one of (1) to (5), wherein a battery is disposed in the water circuit, and the control unit further switches a 5 th mode, the 5 th mode being a mode in which the cooling water is circulated through a 5 th loop that passes through the battery and the 2 nd heat exchanger.

(7) The temperature adjustment device according to (5) or (6), wherein the plurality of control valves includes a 1 st four-way valve and a 2 nd four-way valve, the 1 st four-way valve having: a 1 st port connected downstream of the 1 st heat exchanger; a 2 nd port connected downstream of the 2 nd heat exchanger; a 3 rd port connected upstream of the drive unit; and a 4 th port connected upstream of the battery, the 2 nd four-way valve having: a 5 th port connected upstream of the 1 st heat exchanger; a 6 th port connected upstream of the 2 nd heat exchanger; a 7 th port connected downstream of the drive unit; and an 8 th port connected downstream of the battery, the control unit switching between a 1 st state in which the 1 st port and the 3 rd port and the 2 nd port are respectively communicated with the 4 th port in the 1 st four-way valve, and the 5 th port and the 7 th port and the 6 th port are respectively communicated with the 8 th port in the 2 nd four-way valve, and a 2 nd state in which the 1 st port and the 4 th port and the 2 nd port and the 3 rd port are respectively communicated with each other in the 1 st four-way valve, and the 5 th port and the 8 th port and the 6 th port are respectively communicated with the 7 th port in the 2 nd four-way valve.

(8) The temperature control device according to any one of (1) to (7), wherein a radiator that exchanges heat between outside air and the cooling water is disposed in the water circuit, and the control unit in the 1 st mode is capable of switching a radiator path that passes through the radiator and a detour path that bypasses the radiator on a downstream side of the 1 st heat exchanger and an upstream side of the drive unit in the 1 st circuit.

(9) The temperature control device according to (2), wherein a radiator that exchanges heat between outside air and the cooling water is disposed in the water circuit, and the control unit in the 3 rd mode is capable of switching a radiator path that passes through the radiator and a detour path that bypasses the radiator on a downstream side of the 2 nd heat exchanger and an upstream side of the drive unit in the 3 rd circuit.

(10) The temperature adjustment device according to (8) or (9), wherein a plurality of the control valves include a 3 rd four-way valve, the 3 rd four-way valve having: a 9 th port connected downstream of the radiator path; a 10 th port connected downstream of the detour path; an 11 th port connected to a circuit on a downstream side of the drive unit; and a 12 th port connected upstream of the drive unit, wherein the control unit communicates any one of the 9 th port and the 10 th port with any one of the 11 th port and the 12 th port in the 3 rd four-way valve.

(11) The temperature control device according to any one of (1) to (10), wherein the air conditioning unit has a heater core connected to the water circuit, the heater core heats air with the cooling water, and the 1 st loop passes through the heater core.

(12) A control method of a temperature control device mounted on a vehicle, the temperature control device comprising: a refrigerant circuit through which a refrigerant flows; a water circuit through which cooling water flows; a 1 st heat exchanger and a 2 nd heat exchanger disposed across the refrigerant circuit and the water circuit, the 1 st heat exchanger and the 2 nd heat exchanger performing heat exchange between the refrigerant and the cooling water; and an air conditioning unit connected to the refrigerant circuit or the water circuit, and configured to exchange heat with air, wherein the refrigerant circuit is configured with: a compressor that compresses the refrigerant; and an expansion valve that releases the pressure of the refrigerant, wherein the 1 st heat exchanger is disposed on a downstream side of the compressor and on an upstream side of the expansion valve, and the 2 nd heat exchanger is disposed on a downstream side of the expansion valve and on an upstream side of the compressor, and wherein the water circuit is configured with: a driving unit having a motor that drives the vehicle; and a plurality of control valves that switch flow paths of the cooling water in the water circuit, in which a 1 st mode and a 2 nd mode are switched, the 1 st mode being a mode in which the cooling water is circulated in a 1 st loop passing through the driving unit and the 1 st heat exchanger and the 2 nd heat exchanger is separated from the 1 st loop, and the 2 nd mode being a mode in which the cooling water is circulated in a 2 nd loop passing through the driving unit and the 1 st heat exchanger and the 2 nd heat exchanger is separated from the 2 nd loop.

(13) The control method according to (12), wherein a radiator that exchanges heat between outside air and the cooling water is provided in the water circuit, and in the control method, a 3 rd mode is also switched, the 3 rd mode being a mode in which the cooling water is circulated in a 3 rd loop that passes through the drive unit, the 2 nd heat exchanger, and the radiator, and the 1 st heat exchanger is separated from the 3 rd loop.

(14) The control method according to (12) or (13), wherein a battery is provided in the water circuit, and in the 2 nd mode, the 2 nd loop further passes through the battery.

(15) The control method according to (14), wherein in the 2 nd loop, the drive unit and the battery are connected in parallel.

(16) The control method according to any one of (12) to (15), wherein a battery is disposed in the water circuit, and a 4 th mode is also switched, and the 4 th mode is a mode in which the cooling water is circulated through the battery and a 4 th loop of the 1 st heat exchanger.

(17) The control method according to any one of (12) to (16), wherein a battery is disposed in the water circuit, and a 5 th mode is also switched, and the 5 th mode is a mode in which the cooling water is circulated through a 5 th loop that passes through the battery and the 2 nd heat exchanger.

(18) The control method according to (16) or (17), wherein the plurality of control valves includes a 1 st four-way valve and a 2 nd four-way valve, the 1 st four-way valve having: a 1 st port connected downstream of the 1 st heat exchanger; a 2 nd port connected downstream of the 2 nd heat exchanger; a 3 rd port connected upstream of the drive unit; and a 4 th port connected upstream of the battery, the 2 nd four-way valve having: a 5 th port connected upstream of the 1 st heat exchanger; a 6 th port connected upstream of the 2 nd heat exchanger; a 7 th port connected downstream of the drive unit; and an 8 th port connected downstream of the battery, in which control method a 1 st state in which the 1 st port and the 3 rd port and the 2 nd port are respectively communicated with the 4 th port in the 1 st four-way valve, and the 5 th port and the 7 th port and the 6 th port are respectively communicated with the 8 th port in the 2 nd four-way valve, and a 2 nd state in which the 1 st port and the 4 th port and the 2 nd port are respectively communicated with the 3 rd port in the 1 st four-way valve, and the 5 th port and the 8 th port and the 6 th port are respectively communicated with the 7 th port in the 2 nd four-way valve are switched.

(19) The control method according to any one of (12) to (18), wherein a radiator that exchanges heat between outside air and the cooling water is disposed in the water circuit, and a radiator path that passes through the radiator and a detour path that bypasses the radiator can be switched on a downstream side of the 1 st heat exchanger and on an upstream side of the drive unit in the 1 st circuit.

(20) The control method according to (13), wherein a radiator path passing through the radiator and a detour path bypassing the radiator can be switched on a downstream side of the 2 nd heat exchanger and an upstream side of the drive unit in the 3 rd loop.

(21) The control method according to (19) or (20), wherein the plurality of control valves includes a 3 rd four-way valve, the 3 rd four-way valve having: a 9 th port connected downstream of the radiator path; a 10 th port connected downstream of the detour path; an 11 th port connected to a circuit on a downstream side of the drive unit; and a 12 th port connected upstream of the drive unit, wherein one of the 9 th port and the 10 th port is connected to one of the 11 th port and the 12 th port in the 3 rd four-way valve.

(22) The control method according to any one of (12) to (21), wherein the air conditioning unit has a heater core connected to the water circuit, the heater core heats air with the cooling water, and the 1 st loop passes through the heater core.

Claims (11)

1. A temperature control device is mounted on a vehicle,

the temperature adjusting device comprises:

a refrigerant circuit through which a refrigerant flows;

a water circuit through which cooling water flows;

a 1 st heat exchanger and a 2 nd heat exchanger disposed across the refrigerant circuit and the water circuit, the 1 st heat exchanger and the 2 nd heat exchanger performing heat exchange between the refrigerant and the cooling water;

an air conditioning unit connected to the refrigerant circuit or the water circuit and configured to exchange heat with air; and

a control unit for controlling the water circuit,

the refrigerant circuit is provided with:

a compressor that compresses the refrigerant; and

an expansion valve that releases the pressure of the refrigerant,

the 1 st heat exchanger is disposed on a downstream side of the compressor and on an upstream side of the expansion valve,

the 2 nd heat exchanger is disposed on the downstream side of the expansion valve and on the upstream side of the compressor,

The water circuit is provided with:

a driving unit having a motor that drives the vehicle; and

a plurality of control valves controlled by the control unit to switch the flow path of the cooling water in the water circuit,

it is characterized in that the method comprises the steps of,

the control unit switches between a 1 st mode in which the cooling water circulates in a 1 st loop passing through the drive unit and the 1 st heat exchanger and separates the 2 nd heat exchanger from the 1 st loop, and a 2 nd mode in which the cooling water circulates in a 2 nd loop passing through the drive unit and separates the 1 st heat exchanger and the 2 nd heat exchanger from the 2 nd loop.

2. A temperature regulating device according to claim 1, wherein,

a radiator is disposed in the water circuit, the radiator performing heat exchange between outside air and the cooling water,

the control unit also switches a 3 rd mode in which the cooling water circulates in a 3 rd loop that passes through the drive unit, the 2 nd heat exchanger, and the radiator, and separates the 1 st heat exchanger from the 3 rd loop.

3. A temperature regulating device according to claim 1, wherein,

a battery is arranged in the water circuit,

in the 2 nd mode, the 2 nd loop also passes through the battery.

4. A temperature regulating device according to claim 3, wherein,

in the 2 nd loop, the driving unit and the battery are connected in parallel.

5. A temperature regulating device according to claim 1, wherein,

a battery is arranged in the water circuit,

the control unit also switches a 4 th mode, which is a mode in which the cooling water is circulated in a 4 th loop that passes through the battery and the 1 st heat exchanger.

6. A temperature regulating device according to claim 1, wherein,

a battery is arranged in the water circuit,

the control unit also switches a 5 th mode, which is a mode in which the cooling water is circulated in a 5 th loop that passes through the battery and the 2 nd heat exchanger.

7. A temperature regulating device according to claim 5 or 6, wherein,

the plurality of control valves include a 1 st four-way valve and a 2 nd four-way valve,

the 1 st four-way valve has:

a 1 st port connected downstream of the 1 st heat exchanger;

A 2 nd port connected downstream of the 2 nd heat exchanger;

a 3 rd port connected upstream of the drive unit; and

a 4 th port connected upstream of the battery,

the 2 nd four-way valve has:

a 5 th port connected upstream of the 1 st heat exchanger;

a 6 th port connected upstream of the 2 nd heat exchanger;

a 7 th port connected downstream of the drive unit; and

an 8 th port connected downstream of the battery,

the control section switches between the 1 st state and the 2 nd state,

in this 1 st state, the 1 st port and the 3 rd port and the 2 nd port and the 4 th port are respectively communicated in the 1 st four-way valve, and the 5 th port and the 7 th port and the 6 th port and the 8 th port are respectively communicated in the 2 nd four-way valve,

in this 2 nd state, the 1 st port and the 4 th port and the 2 nd port and the 3 rd port are respectively communicated in the 1 st four-way valve, and the 5 th port and the 8 th port and the 6 th port and the 7 th port are respectively communicated in the 2 nd four-way valve.

8. A temperature regulating device according to claim 1, wherein,

A radiator is disposed in the water circuit, the radiator performing heat exchange between outside air and the cooling water,

the control portion of the 1 st mode is capable of switching, in the 1 st loop, a radiator path through the radiator and a detour path bypassing the radiator on a downstream side of the 1 st heat exchanger and an upstream side of the drive unit.

9. A temperature regulating device according to claim 2, wherein,

the control portion of the 3 rd mode is capable of switching a radiator path through the radiator and a detour path bypassing the radiator on a downstream side of the 2 nd heat exchanger and an upstream side of the driving unit in the 3 rd loop.

10. Temperature regulating device according to claim 8 or 9, characterized in that,

the plurality of control valves comprises a 3 rd four-way valve,

the 3 rd four-way valve has:

a 9 th port connected downstream of the radiator path;

a 10 th port connected downstream of the detour path;

an 11 th port connected to a circuit on a downstream side of the drive unit; and

a 12 th port connected upstream of the drive unit,

the control unit communicates one of the 9 th port and the 10 th port with one of the 11 th port and the 12 th port in the 3 rd four-way valve.

11. A temperature regulating device according to claim 1, wherein,

the air conditioning unit has a heater core connected to the water circuit, the heater core heating air by the cooling water,

the 1 st loop passes through the heater core.