Temperature regulation system

Abstract

The present application provides a temperature regulating system that suppresses power consumption and efficiently and smoothly performs heating of a battery and heating of a vehicle cabin. The present application includes a battery, a first heat medium passage through which a heat medium that exchanges heat with the battery flows, a drive motor, a second heat medium passage through which a heat medium that exchanges heat with the drive motor flows, a refrigerant passage, a third heat medium passage through which a heat medium that exchanges heat with the refrigerant flows, and a multi-pass switching valve that performs opening and closing operations of inlets and outlets of the first to third heat medium passages. An electric heater that heats the heat medium is provided in the first heat medium passage. The multi-pass switching valve, at a prescribed switching position, causes the first heat medium passage to be a closed loop passage to heat the battery using heat generated by the electric heater, and causes the second heat medium passage and the third heat medium passage to be closed loop passages to heat the refrigerant using heat generated by the drive motor.

Description

Technical Field

[0001] This invention relates to a temperature control system installed in electric vehicles and the like. In an HVAC system that includes heating, ventilation, and air conditioning within the vehicle compartment, the system exchanges heat with various functional components (batteries, drive motors, etc.), cooling water, or refrigerant to adjust the temperature of these components to a desired level. Background Technology

[0002] As an existing temperature control system, a vehicle thermal management system is known, comprising: a refrigerant circuit for refrigerant circulation and an interior heat exchanger for heat exchange between the refrigerant and interior air; a heat transfer medium circuit for circulating a heat transfer medium (cooling water) to regulate the temperature of the battery and drive motor; a refrigerant-heat transfer medium heat exchanger for heat exchange between the refrigerant and the heat transfer medium; and a control unit for controlling the operation of the refrigerant circuit and the heat transfer medium circuit. In this vehicle thermal management system, as control modes, there are separately provided: a battery warm-up mode, which focuses on raising the battery to a desired temperature; and a heating assist mode, which focuses on raising the temperature of the refrigerant that contributes to heating the passenger compartment (see, for example, Patent Document 1).

[0003] In this system, when starting the vehicle from a parked state at extremely low temperatures, such as below -10°C, it is impossible to simultaneously use the battery warm-up mode and the heating assistance mode. Furthermore, the heat transfer circuit contains multiple switching valves, each driven by a control unit to regulate the flow of the heat transfer medium, resulting in a large number of parts and a complex structure.

[0004] In addition, as another temperature control system, a temperature control system is known, comprising: a refrigeration cycle loop for refrigerant circulation; and a cooling water loop for cooling water circulation, wherein the refrigeration cycle loop includes: a compressor; a heat dissipation device for heating air for air conditioning using the heat of the refrigerant; an outdoor heat exchanger for heat exchange between the refrigerant and the outside air; and a cooling water-refrigerant heat exchanger, wherein the cooling water loop can exchange heat between the refrigerant and the cooling water in an electric water heater for heating the cooling water, an electric pump, a battery heat exchanger for heating the battery, and the cooling water-refrigerant heat exchanger (see, for example, Patent Document 2).

[0005] In the system, the cooling water circuit does not include the drive motor, etc., so the heat generated by the drive motor, etc., cannot be utilized, and the drive motor, etc., cannot be cooled.

[0006] Furthermore, as another temperature regulation system, a vehicle thermal management system is known, which includes: a vehicle heat pump system; a battery system cooling loop for heat exchange with the battery; a drive train cooling loop including a heat exchanger for heat exchange with the oil of the drive motor; and a switching valve (eight-way valve) connecting the battery system cooling loop and the drive train cooling loop and having four switching modes. The vehicle thermal management system can use the heat generated by the drive motor to heat the battery and provide auxiliary heating for the interior (see, for example, Patent Document 3).

[0007] In the system, only the heat dissipation of the drive motor is used as the heat source for heating. Therefore, it takes time to heat the refrigerant used for heating the battery and heating the cabin. In particular, when the refrigerant temperature is low, the ability to heat the cabin decreases. Instead, the compressor consumes electricity, resulting in the additional consumption of the electricity stored in the battery (storage battery).

[0008] [Existing Technical Documents]

[0009] [Patent Literature]

[0010] [Patent Document 1] Japanese Patent Application Publication No. 2024-63729

[0011] [Patent Document 2] Japanese Patent No. 7053906

[0012] [Patent Document 3] U.S. Patent No. 11807067 Summary of the Invention

[0013] [The problem the invention aims to solve]

[0014] The present invention was made in view of the above circumstances, and its object is to provide a temperature regulation system that, particularly in extremely low temperature environments, suppresses the consumption of electricity stored in the battery, and can efficiently and smoothly heat the battery and provide heating for the vehicle compartment.

[0015] [Technical means to solve the problem]

[0016] The temperature control system of the present invention comprises: a battery; a first heat medium passage for the flow of heat medium that exchanges heat with the battery; a drive motor for driving wheels; a second heat medium passage for the flow of heat medium that exchanges heat with the drive motor; a refrigerant passage for refrigerant circulation; a third heat medium passage for the flow of heat medium that exchanges heat with the refrigerant; and a multi-port switching valve for opening and closing the inlet and outlet of the first, second, and third heat medium passages. In the first heat medium passage, an electric heating element for heating the heat medium is disposed upstream of the battery. When the multi-port switching valve is in a predetermined switching position, the first heat medium passage becomes a closed loop passage to heat the battery using the heat generated by the electric heating element, and the second and third heat medium passages are connected to form a closed loop passage to heat the refrigerant using the heat generated by the drive motor.

[0017] The temperature control system can be structured as follows: a first electric pump for pressurizing the heat medium is configured in the first heat medium passage, and the electric heating element is a positive temperature coefficient (PTC) heater.

[0018] The temperature control system can be structured as follows: a vehicle control unit and an on-board charger are configured in the first heat medium passage to exchange heat with the heat medium; the vehicle control unit controls the vehicle; and the on-board charger charges the battery from the outside.

[0019] The temperature control system may employ the following structure, in which a second electric pump is configured in the second heat medium passage to pressurize and deliver the heat medium, and an oil heat exchanger is configured to transfer the heat generated by the drive motor to the heat medium via oil.

[0020] In the temperature control system, a third electric pump for oil circulation can be configured in the oil passage between the drive motor and the oil heat exchanger.

[0021] The temperature control system may employ the following structure: the drive motor includes a rear drive motor for driving the rear wheels of the vehicle; and a front drive motor for driving the front wheels of the vehicle; and a third electric pump and oil heat exchanger are respectively configured corresponding to the rear drive motor and the front drive motor.

[0022] The temperature control system can be structured as follows: a converter and an inverter are configured in the second heat medium passage to exchange heat with the heat medium.

[0023] In the temperature control system, the following structure can be adopted: in the second heat medium passage, a reservoir tank through which the heat supply medium passes is arranged further downstream than the oil heat exchanger.

[0024] In the temperature control system, the following structure can be adopted: in the second heat medium passage, a first refrigerant-heat medium heat exchanger is arranged downstream of the liquid storage tank. The first refrigerant-heat medium heat exchanger enables heat exchange between the refrigerant and the heat medium. In the refrigerant passage, an on / off valve is arranged upstream of the first refrigerant-heat medium heat exchanger. The on / off valve prevents the flow of refrigerant at the switching position.

[0025] In the temperature control system, the following structure can be adopted: a second refrigerant-heat medium heat exchanger is configured in the third heat medium passage, the second refrigerant-heat medium heat exchanger enables heat exchange between the refrigerant and the heat medium; in the refrigerant passage, an expansion valve is configured upstream of the second refrigerant-heat medium heat exchanger, the expansion valve allowing the refrigerant to flow in the switching position.

[0026] The temperature control system may employ the following structure: a radiator for dissipating heat to the outside air; and a fourth heat medium passage for the flow of heat medium that exchanges heat with the outside air via the radiator, wherein a multi-way switching valve, in the switching position, closes the inlet and outlet of the fourth heat medium passage.

[0027] The temperature control system may employ the following structure, in which the refrigerant passage is configured with: a compressor for compressing the refrigerant; a condenser for condensing the refrigerant passing through the compressor; and an on / off valve located upstream of the condenser, the on / off valve allowing the refrigerant to flow toward the second refrigerant-heat medium heat exchanger in the switching position.

[0028] [The effects of the invention]

[0029] The temperature control system with the aforementioned structure can suppress the consumption of electricity stored in the battery, especially in extremely low temperature environments, and can efficiently and smoothly heat the battery and provide heating for the vehicle compartment. Attached Figure Description

[0030] Figure 1 This is a system diagram illustrating a temperature control system according to an embodiment of the present invention.

[0031] Figure 2 This is a perspective view of the multi-way switching valve device used in a temperature control system according to one embodiment, viewed from an obliquely upward direction.

[0032] Figure 3This is a perspective view of the multi-way switching valve device used in a temperature control system according to one embodiment, viewed from an obliquely upward direction.

[0033] Figure 4 This is a perspective view of the multi-way switching valve device used in a temperature control system according to one embodiment, viewed from a slightly lower angle.

[0034] Figure 5 This is an exploded perspective view of a multi-way switching valve device used in a temperature control system according to one embodiment.

[0035] Figure 6 This is a perspective view showing the base component that forms part of the multi-way switching valve device.

[0036] Figure 7 This is a three-dimensional cross-sectional view of the cylindrical recess of the base member that forms part of the multi-way switching valve device, obtained by cutting it with a surface passing through the axis.

[0037] Figure 8 This is a partial plan view of the cylindrical recessed area of ​​the base member that forms part of the multi-way switching valve device, viewed from the direction of the axis.

[0038] Figure 9 This is a three-dimensional cross-sectional view obtained by cutting the base member, which is part of the multi-way switching valve device, with a plane perpendicular to the axis.

[0039] Figure 10 This is a three-dimensional cross-sectional view obtained by cutting the base member, which is part of the multi-way switching valve device, with a plane perpendicular to the axis.

[0040] Figure 11 This is a perspective view of the multi-way switching valve, which is part of the multi-way switching valve assembly, viewed from an oblique angle.

[0041] Figure 12 This is a perspective view of the multi-way switching valve, which is part of the multi-way switching valve assembly, viewed from a slightly lower angle.

[0042] Figure 13 This is a plan view of the multi-way switching valve, which is part of the multi-way switching valve assembly, viewed from above.

[0043] Figure 14 This is a cross-sectional view obtained by cutting the area of ​​the first outer peripheral surface (upper section) of the multi-way switching valve, which is part of the multi-way switching valve device, with a plane perpendicular to the axis.

[0044] Figure 15 This is a cross-sectional view obtained by cutting the area of ​​the second outer peripheral surface (lower section) of the multi-way switching valve, which is part of the multi-way switching valve device, with a plane perpendicular to the axis.

[0045] Figure 16 This is a cross-sectional view obtained by cutting the middle area of ​​the first outer peripheral surface (upper section) and the second outer peripheral surface (lower section) of the multi-way switching valve, which is part of the multi-way switching valve device, with a plane perpendicular to the axis.

[0046] Figure 17 This is a three-dimensional cross-sectional view obtained by cutting the area of ​​the first outer peripheral surface (upper section) of the multi-way switching valve, which is part of the multi-way switching valve device, with a plane perpendicular to the axis.

[0047] Figure 18 This is a perspective view showing the sealing components and spacer components that make up part of the multi-way switching valve device.

[0048] Figure 19 This is a partial cross-sectional view obtained by cutting through a plane including the axis in the area of ​​the multi-way switching valve and drive unit of the multi-way switching valve device.

[0049] Figure 20 This is a three-dimensional view showing the interior of the drive unit, which is part of the multi-way switching valve device.

[0050] Figure 21 This is a schematic diagram illustrating the first refrigerant-heat medium heat exchanger and the second refrigerant-heat medium heat exchanger, which are part of a multi-way switching valve device.

[0051] Figure 22 It is a system diagram showing the flow of fluids (heat medium, refrigerant) in the temperature control system when the multi-way switching valve is in the first switching position in a multi-way switching valve device.

[0052] Figure 23 It is a diagram showing the state of the multi-way switching valve when it is in the first switching position in the multi-way switching valve device, and it is a partial cross-sectional view of the area of ​​the first outer peripheral surface (upper section) and the second outer peripheral surface (lower section).

[0053] Figure 24 This is a graph showing the results of simulating the temperature rise of the battery at the first switching position, comparing the present invention with the prior art.

[0054] Figure 25 This is a graph showing the results of simulating the temperature rise inside the carriage as a comparison between the present invention and the prior art at the first switching position.

[0055] Figure 26 This is a system diagram showing the flow of fluid (heat medium) in the temperature control system when the multi-way switching valve is in the second switching position in a multi-way switching valve device.

[0056] Figure 27It is a diagram showing the state of the multi-way switching valve when it is in the second switching position in the multi-way switching valve device, and it is a partial cross-sectional view of the area of ​​the first outer peripheral surface (upper section) and the second outer peripheral surface (lower section).

[0057] Figure 28 This is a system diagram showing the flow of fluid (heat medium) in the temperature control system when the multi-way switching valve is in the third switching position in a multi-way switching valve device.

[0058] Figure 29 It is a diagram showing the state of the multi-way switching valve when it is in the third switching position in the multi-way switching valve device, and it is a partial cross-sectional view of the area of ​​the first outer peripheral surface (upper section) and the second outer peripheral surface (lower section).

[0059] Figure 30 This is a system diagram showing the flow of fluid (heat medium) in the temperature control system when the multi-way switching valve is in the fourth switching position in a multi-way switching valve device.

[0060] Figure 31 It is a diagram showing the state of the multi-way switching valve when it is in the fourth switching position in the multi-way switching valve device, and it is a partial cross-sectional view of the area of ​​the first outer peripheral surface (upper section) and the second outer peripheral surface (lower section).

[0061] Figure 32 This is a system diagram showing the flow of fluids (heating medium, refrigerant) in the temperature control system when the multi-way switching valve is in the fifth switching position (the mixing switching position used to mix fluids (heating medium) with different state quantities) in a multi-way switching valve device.

[0062] Figure 33 It is a diagram showing the state of the multi-way switching valve when it is in the fifth switching position in the multi-way switching valve device, and it is a partial cross-sectional view of the area of ​​the first outer peripheral surface (upper section) and the second outer peripheral surface (lower section).

[0063] Figure 34 It is a diagram showing the relationship between the contact part of the multi-way switching valve and the stop of the base member, and it is a partial cross-sectional view obtained by cutting with a plane perpendicular to the axis.

[0064] Figure 35 This is a table showing 15 operating modes 1 to 15 at five switching positions in a temperature control system according to one embodiment.

[0065] Explanation of icon numbers

[0066] Fp1: First heat medium passage

[0067] Fp2: Second heat medium passage

[0068] Fp3: Third heat medium passage

[0069] Fp4: Fourth heat medium passage

[0070] 1: Storage battery

[0071] 2: Car charger

[0072] 3: Electric heating element

[0073] 4: Vehicle control unit

[0074] 5: Converter

[0075] 6: Inverter

[0076] 7: Oil heat exchanger

[0077] 8: Rear drive motor

[0078] 9: Oil passage

[0079] 10: Oil pump (third electric pump)

[0080] 11: Inverter

[0081] 12: Oil heat exchanger

[0082] 13: Front drive motor

[0083] 14: Oil passage

[0084] 15: Oil pump (third electric pump)

[0085] 16: Radiator

[0086] 17: Liquid reservoir

[0087] 18: Compressor

[0088] 19: On / off valve

[0089] 20: Condenser

[0090] 21: Expansion valve

[0091] 22: Evaporator

[0092] M: Multi-way switching valve device

[0093] 100: Base components

[0094] 101: Recessed part of the cylinder

[0095] S: Axis

[0096] 101a: Inner circumferential surface

[0097] 101a1: First inner circumferential surface

[0098] 101a2: Second inner circumferential surface

[0099] I1, I2, I3, I4: Entrance (4 openings)

[0100] O1, O2, O3, O4: Exits (4 openings)

[0101] 102: First entrance side passage

[0102] 102a: First Entrance

[0103] 102b: First downstream port

[0104] 102c: First pump receiving recess

[0105] 103: First Exit Side Passage

[0106] 103a: First Exit

[0107] 103b: First upstream port

[0108] 104: Second entrance side passage

[0109] 104a: Second Entrance

[0110] 104b: Second downstream port

[0111] 104c: Second pump receiving recess

[0112] 105: Second Exit Side Passage

[0113] 105a: Second Exit

[0114] 105b: Second upstream port

[0115] 105c: Branch port

[0116] 105d, 105e: Two disconnect points

[0117] 106: Third entrance side passage

[0118] 106a: Third Entrance

[0119] 106b: Third downstream port

[0120] 107: Third Exit Side Passage

[0121] 107a: Third Exit

[0122] 107b: Third upstream port

[0123] 108: Fourth entrance side passage

[0124] 108a: Fourth Entrance

[0125] 108b: Fourth downstream port

[0126] 109: Fourth Exit Side Passage

[0127] 109a: Fourth Exit

[0128] 109b: Fourth upstream port

[0129] 110: Cover component

[0130] 120: Multi-port switching valve

[0131] 120a: outer peripheral surface

[0132] 120a1: First outer peripheral surface

[0133] 120a2: Second outer peripheral surface

[0134] 121: Rotation axis

[0135] 122: First hollow section

[0136] 123: Second hollow section

[0137] 124: Divider

[0138] 124a: Connecting hole

[0139] 125a~125o: 15 hollow passages on the first outer peripheral surface 120a1

[0140] 126a~126o: 15 hollow passages on the second outer peripheral surface 120a2

[0141] Vg: Longitudinal groove passage section

[0142] 127: Contact Department

[0143] 130: Sealing component

[0144] 140: Spacing member

[0145] 150: Drive Unit

[0146] 152: Motor

[0147] 153, 154: Reduction gears

[0148] 155: Gear

[0149] 155b: The part being inspected

[0150] 156: Hall IC

[0151] 160: Water pump (first electric pump)

[0152] 170: Water pump (second electric pump)

[0153] 180: Storage tank

[0154] 190: First refrigerant-heat medium heat exchanger

[0155] 191: Shell

[0156] 192: Heat Exchange Section

[0157] 193: Intermediate Path

[0158] 194: First refrigerant passage

[0159] 195: On / off valve

[0160] 200: Second refrigerant-heat medium heat exchanger

[0161] 201: Shell

[0162] 202: Heat Exchange Section

[0163] 203: Intermediate Pathway

[0164] 204: Second refrigerant passage

[0165] 205: Expansion valve Detailed Implementation

[0166] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0167] The temperature control system of the present invention is applied in electric vehicles for the purpose of heating, ventilation, and air conditioning in electric vehicles (EVs). In the structure of an air conditioning (heating, ventilation, and air conditioning) system for electric vehicles (EVs) that includes heating, ventilation, and air conditioning of the passenger compartment, heat exchange occurs between various functional components (battery, drive motor, etc.), cooling water (e.g., long-life coolant, LLC) as a heat medium, refrigerant (e.g., Freon-based gas), and cooling water, thereby achieving air conditioning while controlling the temperature of various functional components at the desired temperature.

[0168] like Figure 1As shown, a temperature control system according to one embodiment includes: a first heat medium passage Fp1 as a first fluid passage, a second heat medium passage Fp2 as a second fluid passage, a third heat medium passage Fp3 as a third fluid passage, a fourth heat medium passage Fp4 as a fourth fluid passage, a refrigerant passage Rp, a battery 1, an on-board charger 2, an electric heating element 3, a vehicle control unit 4, a converter 5, an inverter 6, an oil heat exchanger 7, a rear drive motor 8, an oil passage 9, an oil pump 10 as a third electric pump, an inverter 11, an oil heat exchanger 12, a front drive motor 13, an oil passage 14, an oil pump 15 as a third electric pump, a radiator 16, an accumulator 17, a compressor 18, an on / off valve 19, a condenser 20, an expansion valve 21, an evaporator 22, a blower 23, a multi-way switching valve device M, and other parts.

[0169] Here, the condenser 20, evaporator 22, and blower 23 are located inside the carriage IC or in an area connected to the carriage IC.

[0170] like Figures 1 to 5 As shown, the multi-way switching valve device M includes: a base member 100, a cover member 110, a multi-way switching valve 120, a sealing member 130, a spacer member 140, a drive unit 150, a water pump 160 serving as a first electric pump, a water pump 170 serving as a second electric pump, a liquid storage tank 180, a first refrigerant-heat medium heat exchanger 190, and a second refrigerant-heat medium heat exchanger 200.

[0171] The first heat medium passage Fp1 is configured with inlet I1 and outlet O1 facing the multi-way switching valve 120 of the multi-way switching valve device M. Moreover, in the first heat medium passage Fp1, a water pump 160, an electric heating element 3, a vehicle control unit 4, a storage battery 1, and an on-board charger 2 are arranged sequentially from inlet I1 to outlet O1.

[0172] The storage battery 1 is, for example, a high-voltage battery of 300 V to 400 V, which is mainly used as the power source for the rear drive motor 8 and the front drive motor 13. It is configured in the position of the insulating heat exchange structure (not shown) facing the first heat medium passage Fp1 so that it can exchange heat with the cooling water flowing in the first heat medium passage Fp1.

[0173] In addition, power sources for other electrical components include, for example, low-voltage batteries (not shown) ranging from 12 V to 48 V.

[0174] The on-board charger 2, when charging the battery 1, converts the voltage of, for example, an EV charging station or household AC power supply to the required voltage. It is positioned in the insulating heat exchange structure (not shown) facing the first heat medium passage Fp1 so that it can exchange heat with the cooling water flowing in the first heat medium passage Fp1.

[0175] The electric heating element 3 uses the battery 1 as a power source for heating, for example, a PTC (positive temperature coefficient) heater, and is positioned facing the first heat medium passage Fp1 so that it can exchange heat with the cooling water flowing in the first heat medium passage Fp1. Here, when using a PTC heater as the electric heating element 3, its resistance increases with its temperature due to its own adjustment characteristics, thereby limiting the flowing current and reducing power consumption waste.

[0176] The vehicle control unit 4 is a control unit that starts up using a low-voltage battery as a power source and is responsible for various controls of the vehicle. It is configured in the position of the heat exchange structure (not shown) facing the first heat medium passage Fp1 so that it can exchange heat with the cooling water flowing in the first heat medium passage Fp1.

[0177] The second heat medium passage Fp2 is configured such that its inlet I2 and outlet O2 face the multi-way switching valve 120 of the multi-way switching valve device M. Furthermore, in the second heat medium passage Fp2, a water pump 170, a converter 5, an inverter 6, an oil heat exchanger 7, an inverter 11, an oil heat exchanger 12, a liquid storage tank 180, and a first refrigerant-heat medium heat exchanger 190 are arranged sequentially from the inlet I2 toward the outlet O2.

[0178] The converter 5 is a DC-DC converter that reduces the voltage of the battery 1 to a low voltage (e.g., 12 V to 48 V) suitable for charging low-voltage batteries. It is configured in the insulating heat exchange structure (not shown) facing the second heat medium passage Fp2 so that it can exchange heat with the cooling water flowing in the second heat medium passage Fp2.

[0179] In order to make the voltage of the battery 1 suitable for driving the rear drive motor 8, the inverter 6 converts DC to AC and boosts the voltage to a high voltage (e.g., 300 V to 800 V). It is positioned in the insulating heat exchange structure (not shown) facing the second heat medium passage Fp2 so that it can exchange heat with the cooling water flowing in the second heat medium passage Fp2.

[0180] The oil heat exchanger 7 is configured to transfer the heat generated by the rear drive motor 8 to the cooling water via oil. It is positioned facing the second heat medium passage Fp2 so that heat exchange can occur between the cooling water and the oil flowing in the second heat medium passage Fp2.

[0181] The rear drive motor 8 drives the rear wheels of the vehicle. The oil pump 10 circulates the oil flowing in the oil passage 9, thereby cooling the oil through heat exchange with the cooling water. In addition, the oil pump 10 is driven by a low-voltage battery.

[0182] In order to make the voltage of the battery 1 suitable for the drive of the front drive motor 13, the inverter 11 converts DC to AC and boosts the voltage to a high voltage (e.g., 300 V to 800 V). It is positioned in the insulating heat exchange structure (not shown) facing the second heat medium passage Fp2 so that it can exchange heat with the cooling water flowing in the second heat medium passage Fp2.

[0183] The oil heat exchanger 12 is configured to transfer the heat generated by the front drive motor 13 to the cooling water via oil. It is positioned facing the second heat medium passage Fp2 so that heat exchange can occur between the cooling water and the oil flowing in the second heat medium passage Fp2.

[0184] The front drive motor 13 drives the front wheels of the vehicle, and the oil pump 15 circulates the oil flowing in the oil passage 14, thereby cooling the oil through heat exchange with the cooling water. In addition, the oil pump 15 is driven by a low-voltage battery.

[0185] The third heat medium passage Fp3 is configured with its inlet I3 and outlet O3 facing the multi-port switching valve 120 of the multi-port switching valve device M. Furthermore, a second refrigerant-heat medium heat exchanger 200 is arranged in the middle of the third heat medium passage Fp3.

[0186] The fourth heat medium passage Fp4 is configured with its inlet I4 and outlet O4 facing the multi-way switching valve 120 of the multi-way switching valve device M. Furthermore, a radiator 16 is disposed midway through the fourth heat medium passage Fp4.

[0187] The radiator 16 dissipates heat from the cooling water flowing in the fourth heat medium passage Fp4 to the outside air.

[0188] The refrigerant passage Rp is configured to pass through a first refrigerant-heat medium heat exchanger 190 and a second refrigerant-heat medium heat exchanger 200. Furthermore, the refrigerant passage Rp is equipped with a liquid receiver 17, a compressor 18, an on / off valve 19, a condenser 20, an expansion valve 21, and an evaporator 22.

[0189] The receiver 17 is located downstream of the evaporator 22 and upstream of the compressor 18 in the refrigerant passage Rp, so as to separate the refrigerant into gas and liquid and deliver only the gaseous refrigerant to the compressor 18.

[0190] The compressor 18 is driven by the battery 1 as a power source, and compresses the refrigerant to a high temperature and high pressure before sending it out.

[0191] The on / off valve 19 is a solenoid valve driven by a low-voltage battery, which opens / closes the refrigerant passage Rp toward the condenser 20.

[0192] The condenser 20 liquefies the high-temperature, high-pressure gaseous refrigerant delivered from the compressor 18 and releases the heat to the outside (inside the vehicle compartment IC).

[0193] The expansion valve 21 is a solenoid valve driven by a low-voltage battery. It is located downstream of the condenser 20 and the first refrigerant-heat medium heat exchanger 190 in the refrigerant passage Rp, causing the refrigerant to expand rapidly and become low temperature and low pressure.

[0194] Evaporator 22 absorbs heat from the outside (inside the vehicle compartment IC) with the help of the low-temperature, low-pressure refrigerant that has passed through expansion valve 21.

[0195] The blower 23 is driven by a low-voltage battery and generates forced air convection within the vehicle IC to promote the heat dissipation effect based on the condenser 20 and the cooling effect based on the evaporator 22.

[0196] The base component 100 is molded using resin material, such as Figures 6 to 10 The diagram shows: a cylindrical recess 101 centered on axis S; a first inlet side passage 102 and a first outlet side passage 103 forming part of a first heat medium passage Fp1; a second inlet side passage 104 and a second outlet side passage 105 forming part of a second heat medium passage Fp2; a third inlet side passage 106 and a third outlet side passage 107 forming part of a third heat medium passage Fp3; a fourth inlet side passage 108 and a fourth outlet side passage 109 forming part of a fourth heat medium passage Fp4; a plurality of (14) threaded holes H embedded therein; and a plurality of (3) mounting bosses B assembled therefrom.

[0197] like Figure 7 and Figure 8 As shown, the cylindrical recess 101, on its inner circumferential surface 101a centered on axis S, includes multiple openings (inlet I1, outlet O1, inlet I2, outlet O2, inlet I3, outlet O3, inlet I4, outlet O4) within an angular range θ1 (approximately 110 degrees in this case) narrower than half its circumference. Here, as... Figure 7As shown, the inner circumferential surface 101a includes a first inner circumferential surface 101a1 and a second inner circumferential surface 101a2 divided in the direction of axis S. The first inner circumferential surface 101a1 has four openings (outlet O3, inlet I2, outlet O4, inlet I4) arranged in the circumferential direction, and the second inner circumferential surface 101a2 has four openings (inlet I1, outlet O1, inlet I3, outlet O2) arranged in the circumferential direction.

[0198] In addition, such as Figure 8 As shown, the inner circumferential surface 101a includes: a pair of protrusions 101b, which position the sealing member 130 at a position corresponding to the angle range θ1; and a pair of protrusions 101c, which position the spacer member 140 within an angle range θ2 (θ1=θ2) located in a region opposite to the angle range θ1 but separated by the axis S.

[0199] Furthermore, the cylindrical recess 101 as Figure 8 The bottom wall 101d includes a bearing recess 101e that supports the end 121a of the rotating shaft 121 of the multi-way switching valve 120, and a stop 101f that restricts rotation. Figure 6 As shown, the flange portion 101g includes an annular sealing groove 101h for inserting an O-ring Sr1 and five threaded holes 101i.

[0200] like Figure 6 , Figure 7 , Figure 9 As shown, the first inlet side passage 102 includes: a first inlet 102a for cooling water to flow into the first heat medium passage Fp1, a first downstream port 102b, and a first pump receiving recess 102c located in the middle.

[0201] The first inlet 102a is the inlet I1 that opens on the second inner circumferential surface 101a2.

[0202] The first downstream port 102b is connected to the first heat medium passage Fp1, which is located upstream of the electric heating element 3.

[0203] The first pump receiving recess 102c is the area that receives the water pump 160, such as Figure 6 The opening shown is parallel to the axis S and faces the same direction as the cylindrical recess 101, and includes a flange 102c1 at its opening end for fixing the water pump 160.

[0204] like Figure 6 , Figure 7 , Figure 10 As shown, the first outlet side passage 103 includes: a first outlet 103a for cooling water to flow from the first heat medium passage Fp1 into the cylindrical recess 101, and a first upstream port 103b.

[0205] The first outlet 103a is the outlet O1 that opens on the second inner circumferential surface 101a2.

[0206] The first upstream port 103b is connected to the first thermal medium passage Fp1, which is located downstream of the vehicle charger 2.

[0207] like Figure 6 , Figure 7 , Figure 9 As shown, the second inlet side passage 104 includes: a second inlet 104a for cooling water to flow into the second heat medium passage Fp2, a second downstream port 104b, and a second pump receiving recess 104c located in the middle.

[0208] The second inlet 104a is the inlet I2 that opens on the first inner circumferential surface 101a1.

[0209] The second downstream port 104b is connected to the second thermal medium passage Fp2, which is located upstream of converter 5.

[0210] The second pump receiving recess 104c is the area that receives the water pump 170. It is formed to open parallel to the axis S and in the same direction as the cylindrical recess 101. At its opening end, there is a flange portion 104c1 for fixing the water pump 170.

[0211] like Figure 6 , Figure 7 , Figure 9 As shown, the second outlet side passage 105 includes: a second outlet 105a, for cooling water to flow out from the second heat medium passage Fp2 into the cylindrical recess 101; a second upstream port 105b; a branch port 105c, which opens in the middle of the second outlet side passage 105 parallel to the axis S and in the same direction as the cylindrical recess 101; and two disconnect ports 105d and 105e, which are disconnected in the middle at a downstream side than the branch port 105c, and open in the same direction as the cylindrical recess 101 parallel to the axis S.

[0212] The second outlet 105a is the outlet O2 that opens on the second inner circumferential surface 101a2.

[0213] The second upstream port 105b is connected to the second heat medium passage Fp2, which is located further downstream than the oil heat exchanger 12.

[0214] At branch port 105c, it is connected to the liquid storage tank 180 in a manner that connects from the axis S.

[0215] The two disconnect ports 105d and 105e are connected to the first refrigerant-heat medium heat exchanger 190 in a manner that connects from the axis S.

[0216] like Figure 6 , Figure 7 , Figure 10 As shown, the third inlet side passage 106 includes a third inlet 106a for cooling water to flow into the third heat medium passage Fp3, and a third downstream port 106b.

[0217] The third inlet 106a is inlet I3, which opens on the second inner circumferential surface 101a2.

[0218] The third downstream port 106b is formed to open parallel to the axis S and in the same orientation as the cylindrical recess 101.

[0219] like Figure 6 , Figure 7 , Figure 9 As shown, the third outlet side passage 107 includes a third outlet 107a for cooling water to flow from the third heat medium passage Fp3 into the cylindrical recess 101, and a third upstream port 107b.

[0220] The third outlet 107a is the outlet O3 that opens on the first inner circumferential surface 101a1.

[0221] The third upstream port 107b is formed to open parallel to the axis S and in the same orientation as the cylindrical recess 101.

[0222] Furthermore, the third downstream port 106b and the third upstream port 107b are connected to the second refrigerant-heat medium heat exchanger 200 in a manner that connects from the S-axis direction.

[0223] like Figure 6 , Figure 7 , Figure 9 As shown, the fourth inlet side passage 108 includes a fourth inlet 108a for cooling water to flow into the fourth heat medium passage Fp4, and a fourth downstream port 108b.

[0224] The fourth inlet 108a is the inlet I4 that opens on the first inner circumferential surface 101a1.

[0225] The fourth downstream port 108b is formed to open parallel to the axis S and in the same orientation as the cylindrical recess 101.

[0226] like Figure 6 , Figure 7 , Figure 9 As shown, the fourth outlet side passage 109 includes: a fourth outlet 109a for cooling water to flow from the fourth heat medium passage Fp4 into the cylindrical recess 101, and a fourth upstream port 109b.

[0227] The fourth outlet 109a is the outlet O4 that opens on the first inner circumferential surface 101a1.

[0228] The fourth upstream port 109b is formed to open parallel to the axis S and in the same orientation as the cylindrical recess 101.

[0229] Furthermore, the fourth downstream port 108b and the fourth upstream port 109b are connected to the connection portion of the heat sink 16 that constitutes part of the fourth heat medium passage Fp4 in a manner that communicates from the axis S direction.

[0230] The cover member 110 is formed of resin material in a generally circular plate shape, covering the cylindrical recess 101 and serving as a base for fixing the drive unit 150, such as... Figure 5 The device includes: a circular hole 111 through which the end 121b of the rotating shaft 121 of the multi-way switching valve 120 passes; an annular joint 112 that engages with the flange 101g of the cylindrical recess 101; five transverse arms 113 that protrude from the annular joint 112 and have circular holes through which screws b2 pass; and three bosses 114 that have threaded holes into which screws b2 are screwed to fix the drive unit 150.

[0231] The multi-way switching valve 120 is molded from resin material into a cylindrical shape centered on axis S, such as... Figures 11 to 17 The device includes: a rotating shaft 121 centered on axis S; a first hollow portion 122 and a second hollow portion 123 formed by hollowing out both sides of the rotating shaft 121 in the direction of axis S; a partition wall 124 separating the first hollow portion 122 and the second hollow portion 123; 15 hollow passage portions 125a to 125o of the first outer peripheral surface 120a divided in the direction of axis S in the outer peripheral surface 120a; 15 hollow passage portions 126a to 126o of the second outer peripheral surface 120a2; and an abutment portion 127 located near the second hollow portion 123.

[0232] The rotating shaft 121 includes various ends 121a, 121b and an annular sealing portion 121c formed on the end 121b side.

[0233] The end 121a is inserted into the bearing recess 101e formed on the bottom wall 101d of the cylindrical recess 101 of the base member 100, and is rotatably supported.

[0234] End 121b passes through the circular hole 111 of the cover member 110 and is connected to the gear 155 of the drive unit 150.

[0235] like Figure 19 As shown, the annular sealing part 121c and the cover member 110 cooperate to clamp the O-ring Sr2.

[0236] The partition wall 124 includes a plurality of connecting holes 124a that connect the first hollow portion 122 and the second hollow portion 123.

[0237] like Figure 14 As shown, the openwork passage portions 125a to 125o are arranged radially and are formed to extend centrally toward the rotation axis 121.

[0238] In addition, the hollow passage portions 125a and 125b are connected on the inside, the hollow passage portions 125e and 125f are connected on the inside, and the hollow passage portions 125j and 125k are connected on the inside.

[0239] like Figure 15 As shown, the openwork passage portions 126a to 126o are arranged radially and are formed to extend centrally toward the rotation axis 121.

[0240] In addition, the hollow passage portions 126a and 126b are connected on the inside, the hollow passage portions 126c and 126d are connected on the inside, the hollow passage portions 126e and 126h are connected on the inside, the hollow passage portions 126f and 126g are connected on the inside, and the hollow passage portions 126j and 126k are connected on the inside.

[0241] Furthermore, such as Figure 16 As shown, the hollowed-out passage portions 125e and 126e, 125i and 126i, 125l and 126l, 125m and 126m, 125n and 126n, 125o and 126o are respectively formed as longitudinal groove passage portions Vg that are interconnected in the direction of axis S.

[0242] In the structure described above, it is formed as follows: Figure 17 As indicated by the arrows, after the cooling water flows into the perforated passage 125e, it flows out from the perforated passage 126e and the perforated passage 125f. After flowing into the perforated passage 126h, it flows out from the perforated passage 126e and the perforated passage 125f.

[0243] That is, the multi-way switching valve 120 is formed to include: a longitudinal groove passage Vg that connects the hollow passage portion 125e of the first outer peripheral surface 120a1 with the hollow passage portion 126e of the second outer peripheral surface 120a2; and a hollow passage portion 125f of the first outer peripheral surface 120a1 and a hollow passage portion 126h of the second outer peripheral surface 120a2 formed for communicating with the longitudinal groove passage portion Vg.

[0244] like Figure 8As shown, the abutting portion 127 abuts against the stop member 101f formed on the bottom wall 101d of the cylindrical recess 101 of the base member 100, restricting the rotation of the multi-way switching valve 120. That is, the multi-way switching valve 120 rotates clockwise CW and counterclockwise CCW around the axis S to abut against the stop member 101f, thereby restricting further rotation of the multi-way switching valve 120.

[0245] like Figure 18 As shown, the sealing member 130 is assembled into an arcuate plate shape centered on axis S, including: an outer arcuate plate 131 formed of rubber material; an inner arcuate plate 132 formed of crystalline resin material, such as polytetrafluoroethylene (PTFE) or other fluororesin; and a plurality of (eight in this case) rectangular holes 133 that are generally rectangular.

[0246] Multiple rectangular holes 133 are formed to correspond to multiple openings (first inlet 102a, first outlet 103a, second inlet 104a, second outlet 105a, third inlet 106a, third outlet 107a, fourth inlet 108a, and fourth outlet 109a) formed on the inner peripheral surface 101a of the cylindrical recess 101.

[0247] Moreover, such as Figure 8 and Figure 19 As shown, the sealing member 130 is disposed between the inner circumferential surface 101a of the cylindrical recess 101 of the base member 100 and the outer circumferential surface 120a of the multi-way switching valve 120 at a position corresponding to the angle range θ1 between a pair of protrusions 101b.

[0248] like Figure 18 As shown, the spacer member 140 is assembled into an arcuate plate shape centered on axis S, including: an outer arcuate plate 141 formed of rubber material; and an inner arcuate plate 142 formed of crystalline resin material, such as polytetrafluoroethylene (PTFE) or other fluororesins.

[0249] Moreover, such as Figure 8 and Figure 19 As shown, the spacer member 140 is disposed between the inner circumferential surface 101a of the cylindrical recess 101 of the base member 100 and the outer circumferential surface 120a of the multi-way switching valve 120 in a position corresponding to the angle range θ2, that is, in a region opposite to the sealing member 130 across the axis S.

[0250] Thus, the sealing member 130 and the spacer member 140 are configured to face each other across the axis S, thereby achieving the self-aligning function of the multi-way switching valve 120. Compared with the case where the sealing member is configured throughout the entire circumference, the sliding resistance can be reduced, and the driving force of the multi-way switching valve 120 can be reduced.

[0251] like Figure 19 and Figure 20 As shown, the drive unit 150 includes a housing 151, a motor 152 with a drive gear 152a, a reduction gear 153, a reduction gear 154, a gear 155, and a Hall integrated circuit (IC) 156.

[0252] The housing 151 surrounds the entire structure except for the connecting hole 155a of the gear 155, and includes the housing body 151a and the housing cover 151b, as shown below. Figure 19 As shown, it includes three bosses 151a1 through which screw b2 passes.

[0253] Motor 152 is, for example, a direct current (DC) motor driven by a low-voltage battery.

[0254] The gear 155 includes a connecting hole 155a for connecting to the end 121b of the rotating shaft 121, and a detection part 155b containing a permanent magnet and the like and embedded therein.

[0255] Hall IC 156 is disposed on housing 151b facing the detected part 155b to detect the rotational position of multi-way switching valve 120.

[0256] The drive unit 150, which presents the structure, engages with the outer side of the cover member 110 from the direction of axis S and is fixed to the cover member 110 by screw b2.

[0257] Water pump 160 is an electric centrifugal pump driven by a low-voltage battery, such as... Figure 5 As shown, it includes a fitting flange portion 161 and two boss portions 161a through which the screw b1 passes. Moreover, the water pump 160 is arranged in the first pump receiving recess 102c of the base member 100 from the axis S direction, and the fitting flange portion 161 engages with the flange portion 102c1 and is fixed to the base member 100 by the screw b1.

[0258] Water pump 170 is an electric centrifugal pump driven by a low-voltage battery, such as... Figure 5 As shown, it includes a fitting flange portion 171 and two boss portions 171a through which the screw b1 passes. Moreover, the water pump 170 is arranged in the second pump receiving recess 104c of the base member 100 from the direction of the axis S, and the fitting flange portion 171 engages with the flange portion 104c1 and is fixed to the base member 100 by the screw b1.

[0259] The liquid storage tank 180 allows cooling water to pass through and adjusts the internal pressure, which varies according to changes in the cooling water temperature. Figure 5As shown, it includes: a passage portion 181 forming an internal passage (not shown) communicating with the branch port 105c, and two boss portions 182 through which screws b1 pass. Moreover, the liquid storage tank 180 is engaged with the branch port 105c in a manner communicating from the axis S direction, and is fixed to the base member 100 via the boss portions 182 by screws b1.

[0260] like Figure 1 and Figure 2 As shown, the first refrigerant-heat medium heat exchanger 190 enables heat exchange between the refrigerant flowing in the refrigerant passage Rp and the cooling water flowing in the second heat medium passage Fp2, and is disposed in the base member 100 further downstream than the liquid storage tank 180 of the second outlet side passage 105.

[0261] like Figure 5 and Figure 21 As shown, the first refrigerant-heat medium heat exchanger 190 includes: a housing 191, a heat exchange section 192 in which multiple metal plates with high heat transfer are arranged inside the housing 191, an intermediate passage 193 forming part of the second heat medium passage Fp2, i.e., the second outlet side passage 105, a first refrigerant passage 194 forming part of the refrigerant passage Rp, and an on / off valve 195 disposed on the upstream side of the first refrigerant passage 194.

[0262] The housing 191 includes four bosses 191a through which screws b1 pass, an inlet joint 193a and an outlet joint 193b of the intermediate passage 193, and an inlet connection 194a and an outlet connection 194b of the first refrigerant passage 194.

[0263] The on / off valve 195 is a solenoid valve driven by a low-voltage battery, which opens / closes the upstream side of the first refrigerant passage 194.

[0264] like Figure 1 and Figure 2 As shown, the second refrigerant-heat medium heat exchanger 200 enables heat exchange between the refrigerant flowing in the refrigerant passage Rp and the cooling water flowing in the third heat medium passage Fp3, and is disposed in the base member 100 between the third inlet side passage 106 and the third outlet side passage 107.

[0265] like Figure 5 and Figure 21 As shown, the second refrigerant-heat medium heat exchanger 200 includes: a housing 201, a heat exchange section 202 in which multiple metal plates with high heat transfer are arranged inside the housing 201, an intermediate passage 203 connecting the third inlet side passage 106 and the third outlet side passage 107, a second refrigerant passage 204 forming part of the refrigerant passage Rp, and an expansion valve 205 disposed on the upstream side of the second refrigerant passage 204.

[0266] The housing 201 includes four bosses 201a through which screws b1 pass, an inlet joint 203a and an outlet joint 203b of the intermediate passage 203, and an inlet connection 204a and an outlet connection 204b of the second refrigerant passage 204.

[0267] The expansion valve 205 is a solenoid valve driven by a low-voltage battery, which opens the upstream side of the second refrigerant passage 204 to allow the refrigerant to expand.

[0268] Next, the assembly operation of the multi-way switching valve device M with the described structure will be described.

[0269] Prepare in advance, such as Figure 5 The components shown include: base component 100, cover component 110, multi-way switching valve 120, sealing component 130, spacer component 140, drive unit 150, water pump 160, water pump 170, liquid storage tank 180, first refrigerant-heat medium heat exchanger 190, second refrigerant-heat medium heat exchanger 200, O-ring Sr1, O-ring Sr2, and multiple screws b1 and b2.

[0270] First, the sealing member 130 and the spacer member 140 are respectively disposed in the cylindrical recess 101 of the base member 100 between a pair of protrusions 101b and 101c from the direction of axis S.

[0271] Next, the multi-way switching valve 120 with O-ring Sr2 is inserted into the cylindrical recess 101 from the axis S direction, and the end 121a is inserted into the bearing recess 101e.

[0272] Next, the O-ring Sr1 is inserted into the annular sealing groove 101h of the flange portion 101g, and the cover member 110 engages with the flange portion 101g of the base member 100 from the axial direction S and is fixed by screw b2. In the assembled state, the end 121b of the multi-way switching valve 120 is exposed to the outside through the circular hole 111.

[0273] Next, the drive unit 150 approaches the cover member 110 from the axis S direction, inserts the end 121b into the connecting hole 155a of the gear 155, and fixes it to the cover member 110 by screw b2.

[0274] Next, the water pump 160 is inserted into the first pump receiving recess 102c of the base member 100 from the axis S direction and fixed by screw b1.

[0275] Next, the water pump 170 is inserted into the second pump receiving recess 104c of the base member 100 from the direction of axis S and fixed by screw b1.

[0276] Next, the storage tank 180 is engaged with the base member 100 from the S-axis direction in a manner communicating with the branch port 105c and is fixed by screws b1.

[0277] Next, the first refrigerant-heat medium heat exchanger 190 is joined to the base member 100 from the axis S direction and fixed by screws b1 so that the two disconnections 105d, 105e are connected to the intermediate passage 193.

[0278] Next, the second refrigerant-heat medium heat exchanger 200 is joined to the base member 100 from the S-axis direction and fixed by screws b1 so that the third downstream port 106b and the third upstream port 107b are connected to the intermediate passage 203.

[0279] Furthermore, the assembly sequence is not limited to the process described above, and other processes may also be used.

[0280] Thus, relative to the base member 100, various parts (cover member 110, multi-way switching valve 120, sealing member 130, spacer member 140, drive unit 150, water pump 160, water pump 170, liquid storage tank 180, first refrigerant-heat medium heat exchanger 190, second refrigerant-heat medium heat exchanger 200) can be assembled from one side of the axis S direction, thereby reducing the number of assembly steps and thus reducing assembly time.

[0281] Furthermore, by employing an assembly method that assembles from one side along the S-axis, multiple passages (first inlet side passage 102, first outlet side passage 103, second inlet side passage 104, second outlet side passage 105, third inlet side passage 106, third outlet side passage 107, fourth inlet side passage 108, and fourth outlet side passage 109) can be radially arranged around the cylindrical recess 101 and integrally formed, thereby achieving simplification of the configuration structure, reduction of the number of parts, and thinning of the device along the S-axis.

[0282] Next, the operation of the temperature control system, which includes the multi-way switching valve device M, will be explained.

[0283] When the multi-way switching valve 120 is in the first switching position, such as Figure 22 and Figure 23As shown, the first outlet-side passage 103 is connected to the first inlet-side passage 102 by connecting the first outlet 103a (outlet O1) and the first inlet 102a (inlet I1) to the hollow passage portion 126b and the hollow passage portion 126a respectively, and the third outlet-side passage 107a (outlet O3) and the second inlet 104a (inlet I2) are connected to the hollow passage portion 125a and the hollow passage portion 125b respectively, and the third outlet-side passage 107 is connected to the second inlet-side passage 104. The second outlet-side passage 105 is connected to the third inlet-side passage 106 by connecting the second outlet 105a (outlet O2) and the third inlet 106a (inlet I3) to the hollow passage portion 126d and the hollow passage portion 126c respectively, and the fourth inlet-side passage 108 and the fourth outlet-side passage 109 are closed by connecting the fourth inlet 108a (inlet I4) and the fourth outlet 109a (outlet O4) to the hollow passage portion 125d and the hollow passage portion 125c respectively.

[0284] Therefore, the first heat transfer medium passage Fp1 becomes a closed loop, and the second heat transfer medium passage Fp2 and the third heat transfer medium passage Fp3 are connected in series to form a closed loop. Thus, by energizing the electric heating element 3 to generate heat, the cooling water in the first heat transfer medium passage Fp1 can be heated, and the heated cooling water can be used to heat the battery 1.

[0285] Additionally, the cooling water heated by the heat generated from the rear drive motor 8 and the front drive motor 13 (or the heat generated from the converter 5, inverter 6, and inverter 11) can be guided to the third heat medium passage Fp3.

[0286] Therefore, in operating mode 1, with the on / off valve 195 and expansion valve 21 in the closed (OFF) state, the on / off valve 19 is set to the open (ON) state, the compressor 18 is started, and the expansion valve 205 is opened. This allows the refrigerant to be heated in the second refrigerant-heat medium heat exchanger 200 using cooling water, and the heat released from the condenser 20 can be used to heat the interior of the vehicle compartment IC. In operating mode 1, when the outside air temperature is low, for example, below -10°C, the power consumption of the battery 1 can be suppressed, the battery 1 can be heated to a suitable temperature, and the exhaust heat generated by the drive motor can be recovered to heat the refrigerant, improving the heating efficiency inside the vehicle compartment IC.

[0287] Figure 24 This represents the simulation results comparing the heating rates of the present invention and the prior art battery 1, with the managed temperature (target arrival temperature) of battery 1 set to 30°C. (As per...) Figure 24 It can be seen that, compared with the prior art, the present invention requires a shorter time to reach the target temperature, and correspondingly reduces power consumption.

[0288] in addition, Figure 25 This represents the simulation results comparing the heating rates within the IC of the present invention and those of the prior art, with the target temperature reached inside the IC in the vehicle compartment set to 18°C. (As per...) Figure 25 It can be seen that, compared with the prior art, the present invention requires less time to reach the target temperature, and can smoothly heat the IC in the carriage.

[0289] Additionally, at the first switching position, such as Figure 35 As shown, action mode 2 and action mode 3 are set as other action modes.

[0290] In operation mode 2, the electric heating element 3 is turned on, the on / off valve 195 of the first refrigerant-heat medium heat exchanger 190 is closed, the expansion valve 205 of the second refrigerant-heat medium heat exchanger 200 is closed, and the compressor 18 is turned off, thereby heating the battery 1.

[0291] In operating mode 3, the electric heating element 3 is turned off, the expansion valve 205 of the second refrigerant-heat medium heat exchanger 200 is opened, and the compressor 18 is turned on, thereby heating the refrigerant.

[0292] When the multi-way switching valve 120 is in the second switching position, such as Figure 26 and Figure 27 As shown, the first outlet-side passage 103 is connected to the second inlet-side passage 104 by connecting the first outlet 103a (outlet O1) and the second inlet 104a (inlet I2) to the hollow passage portion 126o and the hollow passage portion 125o respectively, thereby connecting the first outlet-side passage 103 to the second inlet-side passage 104. Similarly, the third outlet-side passage 107a (outlet O3) and the first inlet 102a (inlet I1) are connected to the hollow passage portion 125n and the hollow passage portion 126n respectively, thereby connecting the third outlet-side passage 107 to the first inlet-side passage 102. The second outlet-side passage 105 is connected to the third inlet-side passage 106 by connecting the second outlet 105a (outlet O2) and the third inlet 106a (inlet I3) to the hollow passage section 126b and the hollow passage section 126a respectively, and the fourth inlet-side passage 108 is connected to the fourth outlet-side passage 109 by connecting the fourth inlet 108a (inlet I4) and the fourth outlet 109a (outlet O4) to the hollow passage section 125b and the hollow passage section 125a respectively.

[0293] Therefore, the first heat medium passage Fp1, the second heat medium passage Fp2, and the third heat medium passage Fp3 are connected in series to form a closed loop, in which cooling water circulates. In addition, the fourth heat medium passage Fp4 connects the fourth inlet 108a and the fourth outlet 109a to form a closed loop, so no cooling water circulation occurs for the radiator 16.

[0294] At the second switching position, such as Figure 35 As shown, set action modes 4 to 7.

[0295] In operation mode 4, the electric heating element 3 is turned on, the on / off valve 195 of the first refrigerant-heat medium heat exchanger 190 is opened, the expansion valve 205 of the second refrigerant-heat medium heat exchanger 200 is closed, and the compressor 18 is turned on, so that the first refrigerant-heat medium heat exchanger 190 functions as a liquid-cooled condenser, using the electric heating element 3 and refrigerant to heat the cooling water, thereby heating the battery 1.

[0296] In operation mode 5, the electric heating element 3 is turned off, the on / off valve 195 of the first refrigerant-heat medium heat exchanger 190 is opened, the expansion valve 205 of the second refrigerant-heat medium heat exchanger 200 is closed, and the compressor 18 is turned on, so that the first refrigerant-heat medium heat exchanger 190 functions as a liquid-cooled condenser, using refrigerant to heat the cooling water, thereby heating the battery 1.

[0297] In operation mode 6, the electric heating element 3 is turned off, the on / off valve 195 of the first refrigerant-heat medium heat exchanger 190 is turned off, the expansion valve 205 of the second refrigerant-heat medium heat exchanger 200 is turned off, and the compressor 18 is turned off. Only the heat generated by the heating parts (rear drive motor 8, front drive motor 13, etc.) is used to heat the cooling water, thereby heating the battery 1.

[0298] In operation mode 7, the electric heating element 3 is turned off, the on / off valve 195 of the first refrigerant-heat medium heat exchanger 190 is closed, the expansion valve 205 of the second refrigerant-heat medium heat exchanger 200 is opened, and the compressor 18 is turned on, so that the second refrigerant-heat medium heat exchanger 200 functions as a chiller to cool the cooling water, thereby cooling the battery 1.

[0299] When the multi-way switching valve 120 is in the third switching position, such as Figure 28 and Figure 29As shown, the first outlet-side passage 103 is connected to the second inlet-side passage 104 by connecting the first outlet 103a (outlet O1) and the second inlet 104a (inlet I2) to the hollow passage portion 126m and the hollow passage portion 125m respectively, thereby connecting the first outlet-side passage 103 to the second inlet-side passage 104. Similarly, the third outlet-side passage 107a (outlet O3) and the first inlet 102a (inlet I1) are connected to the hollow passage portion 125l and the hollow passage portion 126l respectively, thereby connecting the third outlet-side passage 107 to the first inlet-side passage 102. The second outlet-side passage 105 is connected to the fourth inlet-side passage 108 by connecting the second outlet 105a (outlet O2) and the fourth inlet 108a (inlet I4) to the hollow passage section 126o and the hollow passage section 125o respectively, and the fourth outlet-side passage 109 is connected to the third inlet-side passage 106 by connecting the fourth outlet 109a (outlet O4) and the third inlet 106a (inlet I3) to the hollow passage section 125n and the hollow passage section 126n respectively.

[0300] Therefore, the first heat medium passage Fp1, the second heat medium passage Fp2, the fourth heat medium passage Fp4, and the third heat medium passage Fp3 are connected in series to form a closed loop, in which the cooling water circulates.

[0301] At the third switching position, such as Figure 35 As shown, set action mode 8 and action mode 9.

[0302] In operation mode 8, the electric heating element 3 is turned off, the on / off valve 195 of the first refrigerant-heat medium heat exchanger 190 is closed, the expansion valve 205 of the second refrigerant-heat medium heat exchanger 200 is opened, and the compressor 18 is turned on, so that the second refrigerant-heat medium heat exchanger 200 functions as a cooler to cool the cooling water, and the heat is released to the outside by the radiator 16, thereby cooling the battery 1 and the heat-generating parts (rear drive motor 8, front drive motor 13, etc.).

[0303] In operation mode 9, the electric heating element 3 is turned off, the on / off valve 195 of the first refrigerant-heat medium heat exchanger 190 is turned off, the expansion valve 205 of the second refrigerant-heat medium heat exchanger 200 is turned off, the compressor 18 is turned off, and the heat is released to the outside by the radiator 16, thereby cooling the battery 1 and the heat-generating parts (rear drive motor 8, front drive motor 13, etc.).

[0304] When the multi-way switching valve 120 is in the fourth switching position, such as Figure 30 and Figure 31As shown, the first outlet-side passage 103 is connected to the third inlet-side passage 106 by connecting the first outlet 103a (outlet O1) and the third inlet 106a (inlet I3) to the hollow passage portions 126j and 126k respectively, thereby connecting the first outlet-side passage 103 to the third inlet-side passage 106. Similarly, the third outlet-side passage 107a (outlet O3) and the first inlet 102a (inlet I1) are connected to the hollow passage portions 125i and 126i respectively, thereby connecting the third outlet-side passage 107 to the first inlet-side passage 102. The second outlet-side passage 105 is connected to the fourth inlet-side passage 108 by connecting the second outlet 105a (outlet O2) and the fourth inlet 108a (inlet I4) to the hollow passage section 126l and the hollow passage section 125l respectively, and the fourth outlet-side passage 109 is connected to the second inlet-side passage 104 by connecting the fourth outlet 109a (outlet O4) and the second inlet 104a (inlet I2) to the hollow passage section 125k and the hollow passage section 125j respectively.

[0305] Therefore, the first heat medium passage Fp1 and the third heat medium passage Fp3 are connected in series to form a closed loop, and the second heat medium passage Fp2 and the fourth heat medium passage Fp4 are connected in series to form a closed loop, with cooling water circulating in each closed loop.

[0306] At the fourth switching position, such as Figure 35 As shown, set action modes 10 to 13.

[0307] In operating mode 10, the electric heating element 3 is turned off, the on / off valve 195 of the first refrigerant-heat medium heat exchanger 190 is opened, the expansion valve 205 of the second refrigerant-heat medium heat exchanger 200 is opened, and the compressor 18 is turned on. The first refrigerant-heat medium heat exchanger 190 functions as a liquid-cooled condenser, releasing heat from the refrigerant to the cooling water. The second refrigerant-heat medium heat exchanger 200 functions as a cooler to cool the cooling water, and the radiator 16 releases the heat to the outside, thereby cooling the battery 1 and the heat-generating components (rear drive motor 8, front drive motor 13, etc.).

[0308] In operation mode 11, the electric heating element 3 is turned off, the on / off valve 195 of the first refrigerant-heat medium heat exchanger 190 is closed, the expansion valve 205 of the second refrigerant-heat medium heat exchanger 200 is opened, and the compressor 18 is turned on, so that the second refrigerant-heat medium heat exchanger 200 functions as a cooler to cool the cooling water, and the heat is released to the outside by the radiator 16, thereby cooling the battery 1 and the heat-generating parts (rear drive motor 8, front drive motor 13, etc.).

[0309] In operation mode 12, the electric heating element 3 is turned off, the on / off valve 195 of the first refrigerant-heat medium heat exchanger 190 is opened, the expansion valve 205 of the second refrigerant-heat medium heat exchanger 200 is closed, and the compressor 18 is turned on, so that the first refrigerant-heat medium heat exchanger 190 functions as a liquid-cooled condenser, releasing heat from the refrigerant to the cooling water, and using the radiator 16 to release the heat to the outside, thereby cooling the heat-generating parts (rear drive motor 8, front drive motor 13, etc.).

[0310] In operation mode 13, the electric heating element 3 is turned off, the on / off valve 195 of the first refrigerant-heat medium heat exchanger 190 is turned off, the expansion valve 205 of the second refrigerant-heat medium heat exchanger 200 is turned off, the compressor 18 is turned off, and the heat is released to the outside by the radiator 16, thereby cooling the heat-generating parts (rear drive motor 8, front drive motor 13, etc.).

[0311] When the multi-way switching valve 120 is in the mixing switching position, i.e., the fifth switching position, which mixes cooling water with different state variables (temperature in this case), such as Figure 32 and Figure 33 As shown, the first outlet-side passage 103 is connected to the third inlet-side passage 106 by connecting the first outlet 103a (outlet O1) and the third inlet 106a (inlet I3) to the hollow passage portion 126f and the hollow passage portion 126g respectively, thereby connecting the first outlet-side passage 103 to the third inlet-side passage 106. The third outlet 107a (outlet O3) is connected to the first inlet 102a (inlet I1) and the second inlet 104a (inlet I2) to the hollow passage portion 125e, the hollow passage portion 126e, and the hollow passage portion 125f respectively, thereby connecting the third outlet-side passage 107 to the first inlet-side passage 102 and the second inlet-side passage 104. The second outlet-side passage 105 is connected to the first inlet-side passage 102 and the second inlet-side passage 104 by connecting the second outlet 105a (outlet O2) to the first inlet 102a (inlet I1) and the second inlet 104a (inlet I2) to the hollow passage section 126h, the hollow passage section 126e, and the hollow passage section 125f respectively. The fourth inlet-side passage 108 and the fourth outlet-side passage 109 are closed by connecting the fourth inlet 108a (inlet I4) and the fourth outlet 109a (outlet O4) to the hollow passage section 125h and the hollow passage section 125g respectively.

[0312] Therefore, the first heat medium passage Fp1 and the third heat medium passage Fp3 are connected in series to form a loop passage, and the first heat medium passage Fp1, the third heat medium passage Fp3 and the second heat medium passage Fp2 are connected in series to form a loop passage, and the second heat medium passage Fp2 becomes a loop passage circulating in itself, and the cooling water circulates in each loop passage.

[0313] At the fifth switching position, such as Figure 35 As shown, set action mode 14 and action mode 15.

[0314] In operating mode 14, the electric heating element 3 is turned off, the on / off valve 195 of the first refrigerant-heat medium heat exchanger 190 is opened, the expansion valve 205 of the second refrigerant-heat medium heat exchanger 200 is opened, and the compressor 18 is turned on. The first refrigerant-heat medium heat exchanger 190 functions as a liquid-cooled condenser, releasing heat from the refrigerant to the cooling water, and the second refrigerant-heat medium heat exchanger 200 functions as a cooler to cool the cooling water and moderately heat the battery 1 (micro-heating).

[0315] In operating mode 15, the electric heating element 3 is turned off, the on / off valve 195 of the first refrigerant-heat medium heat exchanger 190 is turned off, the expansion valve 205 of the second refrigerant-heat medium heat exchanger 200 is turned off, the compressor 18 is turned off, and the cooling water is heated by the heat recovered from the heating parts (rear drive motor 8, front drive motor 13, etc.), and the battery 1 is moderately heated (micro-heated).

[0316] Thus, for example, the heat generated by the electric heating element 3 can be suppressed, and the cooling water in the first heat medium passage Fp1 can be adjusted to the most suitable temperature by utilizing the heat emitted from the heating components (converter 5, inverter 6, inverter 11, rear drive motor 8, front drive motor 13) (heat dissipation), thereby heating (micro-heating) the battery 1 to a suitable temperature.

[0317] If the heat output of the heating element 3 is increased, the time it takes for the battery 1 to reach its optimal temperature will be shorter. However, this will cause overshoot exceeding the allowable upper temperature limit, increasing the frequency of switching to cooling mode and raising concerns about increased control complexity and instability of the battery 1. Therefore, by mixing and flowing cooling water with different state variables (temperatures), the cooling water can be adjusted to the optimal temperature for the battery 1, avoiding overshoot, reducing the switching frequency, and maintaining the battery 1 at a stable temperature.

[0318] As described above, the multi-way switching valve 120 appropriately switches from the first switching position to the fifth switching position, such as... Figure 34 As shown, when the position of the abutment portion 127 (shown by the solid line) rotates in one direction (clockwise CW) corresponding to the first switching position, it passes through the second, third, and fourth switching positions and reaches the position of the abutment portion 127 (shown by the double-dotted line), which is the fifth switching position. Thus, the multi-way switching valve 120 rotates clockwise (CW) or counterclockwise (CCW) with the stop member 101f as the boundary, and the angular position is detected by the Hall IC 156 and positioned at the desired switching position.

[0319] As described above, the temperature control system of the present invention includes: a battery 1; a first heat medium passage Fp1 for supplying a heat medium (cooling water) for heat exchange with the battery 1; a drive motor for driving wheels; a second heat medium passage Fp2 for supplying a heat medium for heat exchange with the drive motor; a refrigerant passage Rp for refrigerant circulation; a third heat medium passage Fp3 for supplying a heat medium for heat exchange with the refrigerant; and a multi-way switching valve 120 for controlling the flow of the first heat medium passage Fp1, the second heat medium passage Fp2, and the third heat medium passage Rp. The inlet and outlet of each heat medium passage Fp3 are opened and closed. In the first heat medium passage Fp1, an electric heating element 3 for heating the heat medium is arranged upstream of the battery 1. The multi-way switching valve 120 is in a predetermined switching position (first switching position) to make the first heat medium passage Fp1 a closed loop passage so as to use the heat generated by the electric heating element 3 to heat the battery 1. The second heat medium passage Fp2 and the third heat medium passage Fp3 are connected to form a closed loop passage so as to use the heat generated by the drive motor to heat the refrigerant.

[0320] Accordingly, in the case of low external air temperature (e.g., below -10°C), the power consumption of battery 1 can be suppressed, and battery 1 can be heated to an appropriate temperature. Furthermore, the heat generated by the drive motor can be recovered to heat the refrigerant, thereby improving the heating efficiency inside the vehicle compartment IC.

[0321] In addition, a first electric pump (water pump 160) for pressurizing and conveying the heat medium (cooling water) is configured in the first heat medium passage Fp1, and the electric heating element 3 is a PTC heater.

[0322] Accordingly, the heat medium can be forced to circulate in the first heat medium passage Fp1, and through the self-adjustment characteristics of the PTC heater, its resistance increases as its temperature rises, thereby limiting the current, reducing power consumption waste, and preventing overheating.

[0323] In addition, a vehicle control unit 4 and an on-board charger 2 are configured in the first heat medium passage Fp1 to exchange heat with the heat medium. The vehicle control unit 4 controls the vehicle, and the on-board charger 2 charges the battery 1 from the outside.

[0324] Accordingly, heat exchange can be performed between the vehicle control unit 4 and the on-board charger 2 and the heat medium (cooling water), effectively recovering the heat they generate and providing adequate cooling.

[0325] In addition, the second heat medium passage Fp2 is equipped with: a second electric pump (water pump 170) to pressurize the heat medium; and an oil heat exchanger 7 to transfer the heat generated by the drive motor to the heat medium via oil.

[0326] Accordingly, the heat medium can be forced to circulate in the second heat medium passage Fp2, and the heat generated by the drive motor can be effectively recovered and transferred to the heat medium.

[0327] In addition, a third electric pump for circulating oil is provided in the oil passage 9 and oil passage 14 between the drive motor and the oil heat exchanger. In particular, the drive motor includes: a rear drive motor 8 for driving the rear wheels of the vehicle; and a front drive motor 13 for driving the front wheels of the vehicle. The third electric pump (oil pump 10, oil pump 15) and the oil heat exchangers 7 and 12 are respectively configured correspondingly to the rear drive motor 8 and the front drive motor 13.

[0328] Accordingly, the oil can be forced to circulate, and the heat generated by the rear drive motor 8 and the front drive motor 13 can be effectively recovered and transferred to the heat medium via the oil.

[0329] In addition, a converter 5 and an inverter 6 and an inverter 11 are configured in the second heat medium passage Fp2 to exchange heat with the heat medium.

[0330] Accordingly, heat exchange can be performed between converter 5 and inverter 6, inverter 11 and the heat medium (cooling water), which can effectively recover the heat generated by them and provide appropriate cooling.

[0331] In addition, in the second heat medium passage Fp2, a liquid storage tank 180 through which the heat supply medium passes is arranged further downstream than the oil heat exchanger 12.

[0332] Therefore, the internal pressure of the second heat medium passage Fp2, which varies according to the temperature change of the heat medium (cooling water), can be adjusted, and damage to parts caused by overpressure can be prevented.

[0333] Additionally, in the second heat medium passage Fp2, a first refrigerant-heat medium heat exchanger 190 is disposed downstream of the liquid storage tank 180. The first refrigerant-heat medium heat exchanger 190 enables heat exchange between the refrigerant circulating in the refrigerant passage Rp and the heat medium. In the refrigerant passage (first refrigerant passage 194), an on / off valve 195 is disposed upstream of the first refrigerant-heat medium heat exchanger 190. The on / off valve 195 blocks the flow of refrigerant at a predetermined switching position (first switching position).

[0334] Therefore, by closing the on / off valve 195, heat exchange can be effectively carried out in other areas without heat exchange between the heat medium and the refrigerant.

[0335] In addition, the third heat medium passage Fp3 is equipped with a second refrigerant-heat medium heat exchanger 200, which enables heat exchange between the refrigerant circulating in the refrigerant passage Rp and the heat medium. In the refrigerant passage (second refrigerant passage 204), an expansion valve 205 is arranged upstream of the second refrigerant-heat medium heat exchanger 200. The expansion valve 205 allows the flow of refrigerant in a predetermined switching position (first switching position).

[0336] Accordingly, by opening the expansion valve 205, the refrigerant is heated by cooling water in the second refrigerant-heat medium heat exchanger 200, and the condenser 20 can efficiently heat the interior of the carriage IC.

[0337] Additionally, it includes: a radiator 16 for dissipating heat to the outside air; and a fourth heat medium passage Fp4 for the flow of heat medium that exchanges heat with the outside air via the radiator 16, wherein a multi-way switching valve 120, at a predetermined switching position (first switching position), closes the inlet (fourth inlet 108a) and outlet (fourth outlet 109a) of the fourth heat medium passage Fp4.

[0338] Therefore, the heat medium flowing in the second heat medium passage Fp2 will not be cooled by the radiator 16, thus the heat of the heat medium can be effectively utilized.

[0339] Additionally, the refrigerant passage Rp is equipped with: a compressor 18 for compressing the refrigerant; a condenser 20 for condensing the refrigerant passing through the compressor 18; and an on / off valve 19 located upstream of the condenser 20, which allows the refrigerant to flow toward the second refrigerant-heat medium heat exchanger 200 in a predetermined switching position (first switching position).

[0340] Accordingly, at extremely low temperatures, by opening the expansion valve 205 and the on / off valve 19 and starting the compressor 18, the refrigerant is heated in the second refrigerant-heat medium heat exchanger 200 using the heat medium, which can efficiently heat the interior of the vehicle compartment IC.

[0341] In the embodiment described above, a PTC heater is shown as the electric heating element 3, but it is not limited to this. Any other electric heating element that generates heat using the battery 1 as a power source can also be used.

[0342] In the embodiment described, a structure in which a first electric pump (water pump 160) is arranged in the first heat medium passage Fp1 is shown, but it is not limited to this. As long as the passage and structure are such that natural circulation is generated due to the temperature gradient of the heat medium, the first electric pump may not be used.

[0343] In the embodiment described, a structure in which a second electric pump (water pump 170) is arranged in the second heat medium passage Fp2 is shown, but it is not limited to this. As long as the passage and structure are such that natural circulation is generated due to the temperature gradient of the heat medium, the second electric pump may not be used.

[0344] In the embodiment shown, a structure in which a third electric pump (oil pump 10, oil pump 15) is arranged in the oil passage 9 and oil passage 14 between the drive motor and the oil heat exchanger is shown. However, it is not limited to this. As long as the passage and structure are such that natural circulation is generated due to the temperature gradient of the oil, the form may not use a third electric pump.

[0345] As described above, the temperature control system of the present invention, especially in extremely low temperature environments, suppresses the consumption of electricity stored in the battery and can efficiently and smoothly heat the battery and provide heating for the vehicle compartment. Therefore, it can be applied to electric vehicles and other systems or other equipment in other fields.

Claims

1. A temperature control system, characterized in that, include: Storage battery; The first heat medium passage provides a flow of heat medium for heat exchange with the battery; the drive motor drives the wheels; the second heat medium passage provides a flow of heat medium for heat exchange with the drive motor. The system includes a refrigerant passage for refrigerant circulation; a third heat medium passage for the flow of the heat medium that exchanges heat with the refrigerant; and a multi-port switching valve for opening and closing the inlets and outlets of the first, second, and third heat medium passages. In the first heat medium passage, an electric heating element for heating the heat medium is disposed upstream of the battery. When the multi-way switching valve is in a specified switching position, the first heat medium passage becomes a closed loop passage to heat the battery using the heat generated by the electric heating element, and the second heat medium passage is connected to the third heat medium passage to form a closed loop passage to heat the refrigerant using the heat generated by the drive motor.

2. The temperature control system according to claim 1, characterized in that, A first electric pump is configured in the first heat medium passage to pressurize and deliver the heat medium. The heating element is a positive temperature coefficient heater.

3. The temperature control system according to claim 1, characterized in that, A vehicle control unit and an on-board charger are configured in the first heat medium passage to exchange heat with the heat medium. The vehicle control unit controls the vehicle, and the on-board charger charges the battery from the outside.

4. The temperature control system according to claim 1, characterized in that, The second heat medium passage is equipped with: a second electric pump for pressurizing the heat medium; and an oil heat exchanger for transferring the heat generated by the drive motor to the heat medium via oil.

5. The temperature control system according to claim 4, characterized in that, A third electric pump is configured in the oil passage between the drive motor and the oil heat exchanger to circulate the oil.

6. The temperature control system according to claim 5, characterized in that, The drive motor includes: a rear drive motor for driving the rear wheels of the vehicle; and a front drive motor for driving the front wheels of the vehicle. The third electric pump and the oil heat exchanger are respectively configured in correspondence with the rear drive motor and the front drive motor.

7. The temperature control system according to claim 1, characterized in that, A converter and an inverter are configured in the second heat medium passage to exchange heat with the heat medium.

8. The temperature control system according to claim 4, characterized in that, In the second heat medium passage, a storage tank for the heat medium to pass through is arranged further downstream than the oil heat exchanger.

9. The temperature control system according to claim 8, characterized in that, In the second heat medium passage, a first refrigerant-heat medium heat exchanger is disposed further downstream than the liquid storage tank. The first refrigerant-heat medium heat exchanger enables heat exchange between the refrigerant circulating in the refrigerant passage and the heat medium. In the refrigerant passage, an on / off valve is disposed upstream of the first refrigerant-heat medium heat exchanger. The on / off valve prevents the flow of the refrigerant at the switching position.

10. The temperature control system according to claim 1, characterized in that, A second refrigerant-heat medium heat exchanger is configured in the third heat medium passage, the second refrigerant-heat medium heat exchanger enabling heat exchange between the refrigerant circulating in the refrigerant passage and the heat medium. An expansion valve is located upstream of the second refrigerant-heat medium heat exchanger in the refrigerant passage. The expansion valve allows the refrigerant to flow in the switching position.

11. The temperature control system according to claim 1, characterized in that, It includes: a radiator for dissipating heat to the outside air; and a fourth heat medium passage for the flow of the heat medium that exchanges heat with the outside air via the radiator. The multi-way switching valve, at the switching position, closes the inlet and outlet of the fourth heat medium passage.

12. The temperature control system according to claim 10, characterized in that, The refrigerant passage is equipped with: a compressor for compressing the refrigerant; and a condenser for condensing the refrigerant passing through the compressor. And the on / off valve, located further upstream than the condenser. The on / off valve, in the switching position, allows the refrigerant to flow toward the second refrigerant-heat medium heat exchanger.

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