JP2023122100A - Thermal management system - Google Patents

Abstract

To provide a thermal management system that can efficiently and inexpensively regulate a temperature of an object whose temperature is regulated, in regulating the object whose temperature is regulated by circulating a hating medium in the object, and can eliminate a problem caused by bias of the heating medium.SOLUTION: A thermal management system comprises: a temperature regulation circuit 42 having a third pump 23 for circulating a heating medium in a battery 2; a high-temperature heating medium circuit 44 in which the heating medium heated by a heating part 14 for heating the heating medium is circulated; a low-temperature heating medium circuit 43A in which the heating medium cooled by a cooling part 13 for cooling the heating medium is circulated; thermo-valves 31 and 30 that selectively introduce a heating medium flowing through the high-temperature heating medium circuit 44 and a heating medium flowing through the low-temperature heating medium circuit 43A into the heat-regulation circuit 42; and a storage part 26 that is provided on a pathway through which the heating medium is returned from the temperature-regulation circuit 42 to the high-temperature heating medium circuit 44 or the low-temperature heating medium circuit 43A, and that stores the heating medium.SELECTED DRAWING: Figure 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat management system that regulates temperature by circulating a heat medium to an object to be temperature controlled.

2. Description of the Related Art Conventionally, a battery (battery), an electric motor for running, an inverter, and the like (hereinafter referred to as a temperature control target) mounted on, for example, an electric vehicle (electric vehicle, hybrid vehicle, etc.) generate heat. Therefore, a heat pump circuit (refrigerant circuit) is used to control the temperature by circulating the heat medium to multiple temperature control targets, or a heat pump circuit (refrigerant circuit) is used to air the vehicle interior. A heat management system has been developed that heats and cools a heat medium (such as water) with a refrigerant that absorbs heat in a heat medium circuit and circulates the heat medium through a temperature control target (for example, Patent Document 1 , 2, 3).

JP 2014-80123 A JP 2012-232730 A Japanese Patent Application Laid-Open No. 2021-138209

However, in the configurations of Patent Documents 2 and 3, for example, it is necessary to provide a heat exchanger for temperature control in the heat pump circuit in addition to the heat exchangers for the heater core and cooler core for air conditioning. Therefore, for example, it is conceivable to cool and heat the heat medium flowing to the temperature control target by using the heat medium circulated in the cooler core and the heat medium circulated in the heater core, but the heat exchange efficiency is poor and the cost is high. Small effect.

Also, for example, it is conceivable that the heat medium flowing through the heater core or cooler core is also made to flow to the temperature control target, but the heat medium that has flowed to the temperature control target side returns to the cooler core side or heater core side by the amount introduced. However, there is also a problem that the amount of one of the heat medium becomes excessive due to the unevenness, and the reserve tank becomes full.

The present invention has been made to solve such conventional technical problems, and when circulating a heat medium to a temperature control target to control the temperature, it is possible to inexpensively and efficiently adjust the temperature of the temperature control target, Another object of the present invention is to provide a heat management system that can solve the problem associated with uneven heating medium.

In order to solve the above problems, the heat management system of the present invention includes a heat medium circuit that circulates a heat medium to a temperature control target to control the temperature, and includes a heat medium circuit that circulates the heat medium to the temperature control target. a high-temperature heat medium circuit connected to the temperature control circuit and having a heating part for heating a heat medium, in which the heat medium heated by the heating part is circulated; and a temperature control A low-temperature heat medium circuit connected to a circuit and having a cooling part for cooling a heat medium, in which the heat medium cooled by the cooling part is circulated, and a heat medium flowing through the high-temperature heat medium circuit and the low-temperature heat medium circuit and a reservoir for storing the heat medium provided on the path for returning the heat medium from the temperature control circuit to the high-temperature heat-medium circuit or the low-temperature heat-medium circuit. characterized by comprising

In the heat management system of the invention of claim 2, in the above-mentioned invention, the storage unit includes a high temperature side storage chamber having a high temperature side outlet for returning the heat medium to the high temperature heat medium circuit, and a low temperature side outlet for returning the heat medium to the low temperature heat medium circuit. and a flow path switching unit that connects the high temperature side storage chamber of the storage unit and the temperature control circuit when the temperature control unit introduces the heat medium from the high temperature heat medium circuit to the temperature control circuit characterized by comprising

The heat management system of the invention of claim 3 is characterized in that in each of the inventions described above, the high-temperature side storage chamber and the low-temperature side storage chamber of the storage section are partitioned by a heat insulating wall, and the upper portions thereof are communicated with each other. do.

In the heat management system of the invention of claim 4, in each of the above inventions, the temperature adjustment unit introduces the heat medium flowing through the high temperature heat medium circuit into the temperature control circuit when the temperature of the heat medium flowing through the high temperature heat medium circuit is lower than a predetermined value. Characterized by

In the heat management system of the invention of claim 5, in each of the inventions described above, the temperature control unit controls the low-temperature heat when the temperature of the heat medium flowing through the temperature control circuit becomes equal to or higher than another predetermined value higher than the predetermined value. The heat medium is introduced from the medium circuit to the temperature control circuit.

In the heat management system of the invention of claim 6, in each of the above inventions, the temperature adjustment unit, or the temperature adjustment unit and the flow path switching unit, has a temperature sensing unit that senses the temperature of the fluid flowing inside, and the fluid characterized in that it is a channel switching valve for switching the channel.

A heat management system according to a seventh aspect of the present invention is characterized in that, in each of the above inventions, the object of temperature control is a battery mounted on a vehicle, a motor for running the vehicle, or an inverter that drives the motor.

In the heat management system of the invention of claim 8, in each of the above inventions, the high-temperature heat medium circuit has a heater core for circulating the heat medium heated by the heating unit to heat the interior of the vehicle, and the low-temperature heat medium The circuit is characterized by having a cooler core for circulating the heat medium cooled by the cooling unit to cool the interior of the vehicle.

The heat management system of the invention of claim 9 comprises a compressor that compresses the refrigerant in each of the above inventions, a radiator that radiates heat from the refrigerant discharged from the compressor, and a decompression unit that decompresses the refrigerant radiated by the radiator. and a heat pump circuit having a heat absorber that absorbs heat from the refrigerant decompressed by the decompression unit, the radiator and the heating unit of the high-temperature heat medium circuit are provided in a heat exchange relationship, and the heat absorber and the low-temperature heat medium circuit are cooled. and are provided in a heat exchange relationship.

According to the present invention, in a heat management system including a heat medium circuit that regulates the temperature by circulating a heat medium to a temperature control target, the temperature control circuit has a circulation part that circulates the heat medium to the temperature control target; a high-temperature heat medium circuit connected to the temperature control circuit and having a heating unit that heats the heat medium and through which the heat medium heated by the heating unit is circulated; A low-temperature heat medium circuit in which a heat medium cooled by the cooling part is circulated, and a heat medium flowing through the high-temperature heat medium circuit and a heat medium flowing through the low-temperature heat medium circuit are selectively temperature-controlled. Since it has a temperature adjustment part introduced into the circuit, the heat medium of the high-temperature heat medium circuit is flowed to the temperature control target of the temperature control circuit to warm up the temperature control target, or the heat medium of the low-temperature heat medium circuit is flowed. By cooling the object to be temperature controlled by using the heat exchanger, it is possible to realize efficient temperature control of the object to be temperature controlled with little heat exchange loss.

In this case, in the present invention, since a reservoir for storing the heat medium is provided on the path for returning the heat medium from the temperature control circuit to the high temperature heat medium circuit or the low temperature heat medium circuit, the high temperature heat medium circuit and the low temperature heat medium circuit It is also possible to eliminate the unevenness of the heat medium. Moreover, since it is a structure in which a storage part is provided, an increase in cost can be minimized.

Further, according to the second aspect of the invention, in addition to the above, the high temperature side storage chamber having a high temperature side outlet for returning the heat medium to the high temperature heat medium circuit and the low temperature side for returning the heat medium to the low temperature heat medium circuit. A low-temperature side storage chamber having an outlet is configured, and a flow path switching that connects the high-temperature side storage chamber of the storage part and the temperature control circuit when the temperature control unit introduces the heat medium from the high-temperature heat medium circuit to the temperature control circuit. The heat medium introduced from the high-temperature heat medium circuit flows from the high-temperature side storage chamber of the storage section to the high-temperature heat-medium circuit, and the heat medium introduced from the low-temperature heat medium circuit flows from the low-temperature side storage chamber of the storage section. Each can be returned to the low-temperature heat transfer medium circuit.

In this case, by partitioning the high-temperature side storage chamber and the low-temperature side storage chamber of the storage section with a heat insulating wall as in the invention of claim 3, the heat medium returning to the high-temperature heat medium circuit and the heat medium returning to the low-temperature heat medium circuit are separated. It is possible to suppress the heat exchange of the circuit and suppress the heat loss in each circuit. Further, by connecting the upper parts of the high-temperature side storage chamber and the low-temperature side storage chamber to each other, for example, even when the heat medium introduced from the high-temperature side storage chamber flows through the temperature control circuit into the low-temperature side storage chamber, The amount of heat medium is adjusted between the chambers, and the problem of the low-temperature side storage chamber becoming full can be prevented.

Further, when the temperature of the heat medium flowing through the high-temperature heat medium circuit is lower than a predetermined value, the temperature control unit introduces the heat medium into the temperature control circuit as in the invention of claim 4. It becomes possible to prevent excessive heating of the

Further, as in the fifth aspect of the invention, the temperature control unit is configured to change the temperature of the heat medium flowing through the temperature control circuit from the low-temperature heat medium circuit to the temperature control circuit when the temperature of the heat medium flowing through the temperature control circuit becomes equal to or higher than another predetermined value higher than the predetermined value. By introducing the heat medium to the temperature control target, overheating can be reliably prevented.

In this case, the temperature adjusting section and the flow path switching section may be constituted by a flow path switching valve that has a temperature sensing section that senses the temperature of the fluid flowing inside and switches the flow path of the fluid as in the sixth aspect of the invention. If so, electronic control becomes unnecessary, and the cost of the system can be reduced.

Here, as a temperature control target, for example, a battery mounted on an electric vehicle, an electric motor for running the electric vehicle, and an inverter for driving the electric motor for running can be considered as the object of temperature control.

The high-temperature heat medium circuit includes a heater core for circulating the heat medium heated by the heating unit to heat the interior of the vehicle, and the low-temperature heat medium circuit includes a cooling It is conceivable to have a cooler core for cooling the interior of the vehicle by circulating the heat medium cooled by the section. a heat pump circuit having a radiator for dissipating heat from the refrigerant discharged from the compressor, a decompression section for decompressing the refrigerant radiated by the radiator, and a heat absorber for absorbing heat from the decompressed refrigerant by the decompression section, and the heating section of the high temperature heat medium circuit are provided in a heat exchange relationship, and the heat absorber and the cooling section of the low temperature heat medium circuit are provided in a heat exchange relationship.

As a result, the heat pump circuit, the high-temperature heat medium circuit, and the low-temperature heat medium circuit for air-conditioning the interior of the electric vehicle can be used to control the temperature of the temperature control target. Further, when there is no need to heat the temperature control target, the heat medium flowing through the high-temperature heat medium circuit does not flow into the temperature control circuit as described above, so that the heat medium having a higher temperature is circulated through the heater core. As a result, the vehicle interior can be heated without problems. Furthermore, when there is no need to cool the temperature control target, the heat medium flowing through the low-temperature heat medium circuit does not flow into the temperature control circuit as described above, so that a heat medium with a lower temperature is circulated through the cooler core. As a result, air conditioning in the passenger compartment can be performed without any trouble.

1 is a block diagram of one embodiment of a heat management system of the present invention (Embodiment 1; first path state in heating mode); FIG. FIG. 2 is a cross-sectional view of a thermo valve as an example of the temperature adjustment unit and flow path switching unit of the heat management system of FIG. 1; FIG. 2 is a configuration diagram extracting a temperature control circuit and a storage unit of the heat management system of FIG. 1; FIG. 2 is a configuration diagram extracting a temperature control circuit and a reservoir in the case of FIG. 1; 2 is a configuration diagram illustrating a second path state in a heating mode of the heat management system of FIG. 1; FIG. FIG. 6 is a diagram showing the configuration of the temperature control circuit and the reservoir extracted from the case of FIG. 5; 2 is a configuration diagram of the heat management system of FIG. 1 in a cooling mode; FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail based on the drawings.
(1) Configuration of Thermal Management System 1 FIG. 1 shows the configuration of a thermal management system 1 according to an embodiment of the present invention. The thermal management system 1 of the embodiment air-conditions the interior of an electric vehicle such as an electric vehicle or a hybrid vehicle, and also temperature-controls temperature control objects such as a battery 2, an electric motor for traveling, an inverter, etc., which are taken up in the embodiment. The air conditioner for a vehicle is configured to include a heat pump circuit 3 , a heat medium circuit 4 , and a control device 6 . In the present application, the concept of battery also includes a fuel cell.

The heat pump circuit 3 of the embodiment includes a compressor 7 that compresses a refrigerant (freon refrigerant), a radiator 8 that dissipates heat from the refrigerant (high-temperature refrigerant) discharged from the compressor 7, and a refrigerant that has dissipated heat from the radiator 8. A refrigerant circuit in which an expansion valve 9 as a decompression unit that decompresses, a heat absorber 11 that absorbs heat by evaporating the refrigerant decompressed by the expansion valve 9, and an accumulator 12 are sequentially connected in a ring by refrigerant pipes. It is usually installed in a so-called engine room under the hood of an electric vehicle.

The heat medium circuit 4 is a circuit through which a heat medium such as water flows. First to third pumps 21 to 23 as units, a radiator 29, a thermo valve 30 and a thermo valve 31 that constitute the temperature adjustment unit of the present invention, and a thermo valve 45 that constitutes the flow path switching unit of the present invention. , eight three-way valves 32 to 39, a check valve 41, and a reservoir 26 of the present invention composed of a reserve tank of a predetermined capacity, which are connected by heat medium pipes as will be described later.

The three-way valves 32 to 39 of the embodiment have three connection ports, and can be switched between a state in which all connection ports are communicated and a state in which only two of them are communicated (four states in total). It is a valve device that makes it possible.

In this case, the outlet of the cooling unit 13 is connected to the first connection port of the three-way valve 32 by the heat medium pipe C1, and the second connection port of the three-way valve 32 is connected to the third connection port of the three-way valve 33 by the heat medium pipe C2. It is A first connection port of the three-way valve 33 is connected to an inlet of the cooler core 16 by a heat medium pipe C4, and an outlet of the cooler core 16 is connected to a first connection port of the three-way valve 34 by a heat medium pipe C5. The second connection port of the three-way valve 34 is connected to the first connection port of the three-way valve 35 by the heat medium pipe C6, and the second connection port of the three-way valve 35 is connected to the inlet of the first pump 21 by the heat medium pipe C7. there is The outlet of the first pump 21 is connected to the inlet of the cooling section 13 by a heat medium pipe C8.

A second connection port of the three-way valve 33 is connected to a main valve port MV, which will be described later, of the thermovalve 30 (constituting a temperature control unit) through a heat medium pipe C10. It is connected to the connection point of the heat medium pipe C42 and the heat medium pipe C43 by the medium pipe C11.

A mixed water port XV of the thermo valve 30, which will be described later, is connected to the inlet of the third pump 23 by a heat medium pipe C14 and a heat medium pipe C41, and the outlet of the third pump 23 is connected to the battery 2 (temperature control target). A jacket structure having an inlet and an outlet through which a heat medium flows is formed around the battery 2, and the battery 2 is configured to exchange heat with the heat medium through this jacket structure. The inlet of the battery 2 is the inlet of this jacket structure, and the outlet of the battery 2, ie, the outlet of the jacket structure, is connected to the inlet of the check valve 41 by the heat medium pipe C16 and the heat medium pipe C12. An outlet of the check valve 41 is connected through a heat medium pipe C13 to an upper portion of a low-temperature side storage chamber 61 of the storage section 26, which will be described later. The check valve 41 has a forward direction toward the reservoir 26 .

Here, the inside of the storage section 26 is partitioned into the above-described low temperature side storage chamber 61 and high temperature side storage chamber 63 by a heat insulating wall 62 as shown in an enlarged view in FIG. The heat insulating wall 62 rises from the bottom wall of the reservoir 26, but does not reach the top wall, so that the low temperature side reservoir chamber 61 and the high temperature side reservoir chamber 63 communicate with each other at their upper portions. (Fig. 3).

The heat medium pipe C42 is connected to a connection point between the heat medium pipe C16 and the heat medium pipe C12, and the heat medium pipe C43 is connected to a bypass valve port BV of the thermo valve 45 (flow path switching portion), which will be described later. A later-described mixed water port XV of the thermo valve 45 is communicated and connected to the upper portion of the high temperature side storage chamber 63 of the storage section 26 by a heat medium pipe C44.

One end of a heat medium pipe C46 is connected to the low temperature side outlet 61A formed at the bottom of the low temperature side reservoir 61 of the reservoir 26, and the other end of the heat medium pipe C46 is connected to the third connected to the connection port. One end of the heat medium pipe C45 is connected to the high temperature side outlet 63A formed at the bottom of the high temperature side reservoir 63 of the reservoir 26, and the other end of the heat medium pipe C45 is connected to the inlet of the heater core 17. It is connected.

A main valve port MV of the thermo valve 45, which will be described later, is connected to a main valve port MV, which will be described later, of the thermo valve 31 (temperature adjustment unit) through a heat medium pipe C47. A bypass valve port BV of the thermo valve 31, which will be described later, is connected to a connection point between the heat medium pipe C14 and the heat medium pipe C41 through a heat medium pipe C40. C19 is connected.

A closed loop composed of the third pump 23, the heat medium pipe C15, the jacket structure of the battery 2, the heat medium pipe C16, the heat medium pipe C42, the heat medium pipe C11, the thermo valve 30, the heat medium pipe C14, and the heat medium pipe C41. , the heat medium pipe C10, the heat medium pipe C12, the check valve 41, and the heat medium pipe C13 constitute the temperature control circuit 42 of the present invention.

Also, the cooling unit 13, the heat medium pipe C1, the three-way valve 32, the heat medium pipe C2, the three-way valve 33, the heat medium pipe C4, the cooler core 16, the heat medium pipe C5, the three-way valve 34, the heat medium pipe C6, the three-way valve 35, The heat medium pipe C7, the first pump 21, and the heat medium pipe C8 constitute a low-temperature heat medium circuit 43 in the present invention in the cooling mode, which will be described later. The heat medium pipe C10 forms a connecting portion between the low-temperature heat medium circuit 43 and the temperature control circuit 42 in this case. The thermo valve 30 is connected to the heat medium pipe C10 (connection portion) and controls the inflow of the heat medium from the low-temperature heat medium circuit 43 to the temperature control circuit 42 .

Also, the outlet of the heating unit 14 is connected to the third connection port of the three-way valve 36 through the heat medium pipe C17. The first connection port of the three-way valve 36 is connected to the mixed water port XV of the thermo valve 31 through the heat medium pipe C19 as described above. 45 main valve port MV.

As described above, the heat medium pipe C45 is connected to the inlet of the heater core 17, and the outlet of the heater core 17 is connected to the first connection port of the three-way valve 38 by the heat medium pipe C20. The second connection port of the three-way valve 38 is connected to the inlet of the second pump 22 through the heat medium pipe C21, and the outlet of the second pump 22 is connected to the inlet of the heating unit 14 through the heat medium pipe C22.

The heating unit 14, the heat medium pipe C17, the three-way valve 36, the heat medium pipe C19, the thermo valve 31, the heat medium pipe C47, the thermo valve 45, the heat medium pipe C44, the high temperature side reservoir 63 of the reservoir 26, the heat medium pipe. C45, the heater core 17, the heat medium pipe C20, the three-way valve 38, the heat medium pipe C21, the second pump 22, and the heat medium pipe C22 constitute the high temperature heat medium circuit 44 of the present invention.

The reservoir 26 is located on a path for returning the heat medium from the temperature control circuit 42 to the high-temperature heat-medium circuit 44 or the low-temperature heat-medium circuit 43 . That is, the return path for the high temperature heat medium circuit 44 is the thermo valve 31, the heat medium pipe C47, the thermo valve 45, the heat medium pipe C43, the heat medium pipe C44, the heat medium pipe C45, and the low temperature heat medium circuit. 43 is a heat medium pipe C12, a check valve 41, a heat medium pipe C13, and a heat medium pipe C46. Also, the thermo valve 31 controls the inflow of the heat medium from the high-temperature heat medium circuit 44 to the temperature control circuit 42 . Further, the thermo valve 45 performs control to switch between flowing the heat medium from the heat medium pipe C42 to the heat medium pipe C44 and flowing the heat medium from the heat medium pipe C47 to the heat medium pipe C44.

The second connection port of the three-way valve 36 is connected to the first connection port of the three-way valve 37 through a heat medium pipe C24, and the third connection port of the three-way valve 37 is connected to the inlet of the radiator 29 through a heat medium pipe C25. It is The outlet of the radiator 29 is connected to the second connection port of the three-way valve 39 through the heat medium pipe C26, and the first connection port of the three-way valve 39 is connected to the third connection port of the three-way valve 38 through the heat medium pipe C27. there is

Furthermore, the second connection port of the three-way valve 37 is connected to the third connection port of the three-way valve 32 through a heat medium pipe C28, and the third connection port of the three-way valve 35 is connected to the third connection port of the three-way valve 39 through a heat medium pipe C29. connected to the connection port. Cooling unit 13, heat medium pipe C1, three-way valve 32, heat medium pipe C28, three-way valve 37, heat medium pipe C25, radiator 29, heat medium pipe C26, three-way valve 39, heat medium pipe C29, three-way valve 35, heat medium The pipe C7, the first pump 21, and the heat medium pipe C8 constitute a low-temperature heat medium circuit 43A in the present invention in the heating mode, which will be described later. In this case, the heat medium pipe C2 and the heat medium pipe C10 form a connecting portion between the low-temperature heat medium circuit 43A and the temperature control circuit 42. As shown in FIG.

In FIG. 1, reference numeral 46 denotes an HVAC unit that supplies air for air conditioning to the interior of the electric vehicle. is provided. The cooler core 16 and the heater core 17 described above are sequentially arranged in the air flow passage 47 on the downstream side of the indoor fan 49 .

(2) Configurations of thermo valves (temperature adjustment units) 30 and 31 and thermo valve 45 (flow path switching unit) FIG. part). The thermo valve 30, the thermo valve 31 and the thermo valve 45 basically have the same structure, but are used differently. That is, the thermo valve 30 is connected to the heat medium pipe C10 (the connection portion between the temperature control circuit 42 and the low temperature heat medium circuits 43 and 43A), and the thermo valve 31 is connected to the heat medium pipe C19 (the temperature control circuit 42 and the high temperature heat medium circuit 44). connection part). Also, the thermo valve 45 is connected to the heat medium pipe C43 (the connection portion between the temperature control circuit 42 and the reservoir 26).

Each of them includes a housing 51 , a main valve 52 , a bypass valve 53 , a temperature sensing portion 54 and springs 56 and 57 . The housing 51 is formed with the aforementioned main valve port MV, bypass valve port BV, and mixed water port XV, and a mixing chamber 58 is provided inside the housing 51 .

Main valve port MV communicates with mixing chamber 58 through opening 59 and bypass valve port BV communicates with mixing chamber 58 . The main valve 52 opens and closes the opening 59 by the action of the temperature sensing portion 54 and the springs 56 and 57, and the bypass valve 53 opens and closes the bypass valve port BV. Incidentally, the mixed water port XV communicates with the mixing chamber 58 .

The temperature sensing part 54 is connected to the main valve 52 and the bypass valve 53, and has a structure in which wax (for example, paraffin wax) is incorporated and expands and contracts. The temperature sensing part 54 expands and contracts according to the temperature of the heat medium in the mixing chamber 58, moves the main valve 52 and the bypass valve 53, and adjusts the opening degrees of the opening 59 and the bypass valve port BV.

The temperature of the heat medium in the mixing chamber 58 of the thermo valve 31 is the temperature of the heat medium flowing from the mixed water port XV (the temperature of the heat medium flowing through the high-temperature heat medium circuit 44) as described later. Further, the temperature of the heat medium in the mixing chamber 58 of the thermo valve 30 is the temperature of the heat medium flowing from the bypass valve port BV as described later, or the temperature of the heat medium and the heat medium flowing from the main valve port MV through the opening 59. It is the temperature of the heat medium mixed with the mixed heat medium, and the temperature of the heat medium in any mixing chamber 58 is also the temperature of the heat medium flowing through the temperature control circuit 42 . Further, the temperature of the heat medium in the mixing chamber 58 of the thermo valve 45 is the temperature of the heat medium flowing in from the bypass valve port BV or the temperature of the heat medium flowing in from the main valve port MV, as will be described later.

As described above, the heat medium pipe C40 is connected to the main valve port MV of the thermo valve 31, the heat medium pipe C47 is connected to the bypass valve port BV, and the mixed water port XV is connected to the heat medium pipe C19. there is Further, the heat medium pipe C47 is connected to the main valve port MV of the thermo valve 45 as described above, the heat medium pipe C43 is connected to the bypass valve port BV, and the mixed water port XV is connected to the heat medium pipe C44. It is

When the temperature of the heat medium in the mixing chamber 58 is lower than a predetermined value T1 (for example, +30° C.), the thermo valve 31 and the thermo valve 45 close the opening 59 and the bypass valve 53 opens the bypass valve port. Open BV. As a result, the thermo valve 31 introduces the heat medium of the high-temperature heat medium circuit 44 into the mixing chamber 58 from the mixed water port XV, and flows it through the heat medium pipe C40 from the bypass valve port BV, thereby supplying the temperature control circuit 42 with high-temperature heat. A high temperature heat medium in the medium circuit 44 is introduced. In addition, the thermo valve 45 introduces the heat medium that has flowed from the temperature control circuit 42 to the heat medium pipe C43 into the mixing chamber 58 from the bypass valve port BV, and the high temperature of the storage part 26 from the mixed water port XV through the heat medium pipe C44. It flows into the side storage chamber 63 .

On the other hand, the thermo valve 31 and the thermo valve 45 open the opening 59 of the main valve 52 and close the bypass valve port BV of the bypass valve 53 when the temperature of the heat medium in the mixing chamber 58 reaches or exceeds the predetermined value T1. As a result, the thermo valve 31 causes the heat medium that has flowed in from the mixed water port XV to flow from the opening 59 to the main valve port MV and flow out to the heat medium pipe C47. 58 is set to flow from the mixed water port XV to the high temperature side reservoir 63 of the reservoir 26 through the heat medium pipe C44. That is, in this state, the heat medium in the high temperature heat medium circuit 44 is not introduced into the temperature control circuit 42 .

On the other hand, the heat medium pipe C10 connected to the low-temperature heat medium circuit 43 as described above is connected to the main valve port MV of the thermo valve 30, and the heat medium pipe C11 is connected to the bypass valve port BV. A heat medium pipe C14 is connected to the port XV. When the temperature of the heat medium in the mixing chamber 58 is lower than another predetermined value T2 (for example, +40° C.) higher than the predetermined value T1, the main valve 52 closes the opening 59 and the bypass valve 53 closes the bypass valve. When the port BV is opened and the temperature of the heat medium in the mixing chamber 58 reaches a predetermined value T2 or higher, the main valve 52 begins to open the opening 59, and the heat medium (low temperature heat medium described later) flows from the low temperature heat medium circuit 43 into the mixing chamber. It is set to be introduced in 58. The main valve 52 of the thermovalves 30, 31, 45 is structured such that a slight amount of heat medium flows into the mixing chamber 58 from the main valve port MV when the opening 59 is closed.

The operation of the heat management system 1 of the embodiment with the above configuration will be described.
(3) Heating Mode and Temperature Control of Battery 2 (Temperature Control Target) First, the heating mode by the controller 6 will be described. Each arrow in FIG. 1 indicates how the heat medium flows in the heating mode. In the heating mode, the control device 6 sets the three-way valve 32 to communicate the heat medium pipes C1, C28, and C2, and sets the three-way valve 33 to communicate only the heat medium pipes C2 and C10. Also, the three-way valve 34 is set to a state in which only the heat medium pipe C6 and the heat medium pipe C46 are communicated, and the three-way valve 35 is set to a state in which the heat medium pipes C6, C7, and C29 are communicated. In addition, the three-way valve 36 is put in a state in which only the heat medium pipe C17 and the heat medium pipe C19 are communicated, and the three-way valve 37 is put in a state in which only the heat medium pipe C25 and the heat medium pipe C28 are communicated. Further, the three-way valve 39 is switched to a state in which only the heat medium pipe C26 and the heat medium pipe C29 are communicated, and the three-way valve 38 is switched to a state in which only the heat medium pipe C20 and the heat medium pipe C21 are communicated.

Then, the compressor 7, the pumps 21, 22, 23 and the indoor fan 49 are operated. As a result, the heat medium discharged from the first pump 21 is sucked into the first pump 21 through the cooling unit 13 and the radiator 29 in order, and is circulated in the low-temperature heat medium circuit 43A. In addition, under low outside air temperature conditions below the freezing point, the temperature of the heat medium flowing into the mixing chamber 58 from the bypass valve port BV of the thermo valve 30 is low (lower than the predetermined value T2), so the temperature sensing part 54 is located inside the mixing chamber 58. The opening 59 is closed by the main valve 52 and the bypass valve port BV is opened by the bypass valve 53 based on the temperature of the heat medium. As a result, the heat medium is circulated in the closed loop of the temperature control circuit 42 (indicated by arrows in FIG. 1).

Also, the heat medium discharged from the second pump 22 reaches the thermo valve 31 through the heating section 14 . Here, under low outside air temperature conditions below freezing, the temperature of the heat medium flowing into the mixing chamber 58 from the mixed water port XV of the thermo valve 31 is also low (lower than the predetermined value T1). The opening 59 is closed by the main valve 52 and the bypass valve port BV is opened by the bypass valve 53 based on the temperature of the heat medium inside. The thermo valve 45 also closes the opening 59 by the main valve 52 and opens the bypass valve port BV by the bypass valve 53, so that the heat medium reaching the thermo valve 31 is introduced into the temperature control circuit 42 through the heat medium pipe C40. . That is, when the thermo valve 31 introduces the heat medium from the high temperature heat medium circuit 44 to the temperature control circuit 42 , the thermo valve 45 communicates the high temperature side reservoir 63 of the reservoir 26 with the temperature control circuit 42 .

The heat medium passing through the heat medium pipe C40 is sucked into the third pump 23 together with the heat medium circulating in the closed loop of the temperature control circuit 42 through the heat medium pipe C41. Then, the heat is circulated from the heat medium pipe C15 to the battery 2 to heat the battery 2 . Thereby, the warm-up of the battery 2 is performed. The heat medium introduced into the temperature control circuit 42 flows from the heat medium pipe C42 to the heat medium pipe C43, passes through the bypass valve port BV of the thermo valve 45, passes through the mixing chamber 58, and flows from the mixed water port XV to the heat medium pipe C44. , and flows into the high-temperature side storage chamber 63 of the storage section 26 .

The heat medium flowing into the high-temperature side storage chamber 63 is temporarily stored, flows out from the heat medium pipe C45, and flows into the heater core 17. As shown in FIG. The heat medium flowing out of the heater core 17 is sucked into the second pump 22 and circulated in the high-temperature heat medium circuit 44 . Solid arrows in FIG. 4 indicate this state, which is defined as the first path state of the heat medium circuit 4 .

When the compressor 7 is operated, the refrigerant releases heat in the radiator 8 and absorbs heat in the heat absorber 11 . Since this heated heat medium is introduced into the temperature control circuit 42 as described above, the battery 2 is heated. Further, since the heat medium that has passed through the reservoir 26 is then circulated to the heater core 17, the air supplied from the indoor fan 49 into the passenger compartment is heated by the heater core 17, thereby heating the passenger compartment.

On the other hand, in the heat absorber 11, the heat medium flowing through the cooling section 13 is cooled by the refrigerant. This cooled low-temperature heat medium is circulated to the radiator 29 and warmed by the outside air. That is, it draws up heat in the outside air. The heat thus pumped up is conveyed to the radiator 8 by the heat pump circuit 3, and is used for heating the battery 2 and heating the interior of the vehicle.

After the start of operation, the temperature of the heat medium circulating in the high-temperature heat medium circuit 44 rises. Then, when the temperature of the heat medium flowing into the mixing chamber 58 from the mixed water port XV of the thermo valve 31 rises above the predetermined value T1 (+30° C.), the temperature sensing part 54 detects the temperature of the heat medium in the mixing chamber 58. By moving the bypass valve 53 and the main valve 52 based on the temperature of , the bypass valve port BV is closed and the opening 59 is opened. In such a state, the temperature of the heat medium flowing into the mixing chamber 58 from the bypass valve port BV of the thermo valve 45 also rises above the predetermined value T1. By moving the bypass valve 53 and the main valve 52 based on the temperature of the heat medium, the bypass valve port BV is closed and the opening 59 is opened.

As a result, the heat medium flowing in from the mixed water port XV of the thermo valve 31 passes through the mixing chamber 58, through the opening 59, and flows out from the main valve port MV to the heat medium pipe C47. , and flows into the high-temperature side storage chamber 63 of the storage section 26 . Then, it comes to flow to the heater core 17 through the heat medium pipe C45. Solid line arrows in FIGS. 5 and 6 indicate this state, which is referred to as the second path state of the heat medium circuit 4 . That is, since no heat medium is introduced from the high-temperature heat medium circuit 44 to the temperature control circuit 42, excessive heating of the battery 2 is prevented.

Thereafter, the self-heating of the battery 2 increases the temperature of the heat medium circulating in the closed loop of the temperature control circuit 42 . When the temperature of the heat medium flowing into the mixing chamber 58 from the bypass valve port BV of the thermo valve 30 reaches or exceeds the predetermined value T2 (+40° C.), the temperature sensing part 54 detects that the heat medium in the mixing chamber 58 is Based on the temperature, the main valve 52 is moved to start opening the opening 59 . As a result, part of the low-temperature heat medium flowing through the low-temperature heat medium circuit 43 is diverted by the three-way valve 32, passes through the heat medium pipe C2, the three-way valve 33, the heat medium pipe C10, and enters the thermo valve 30 from the main valve port MV. 6 and begins to flow into the mixing chamber 58 through the opening 59 (indicated by the dashed arrow in FIG. 6).

The heat medium that has flowed in from the opening 59 is mixed with the heat medium that has flowed in from the bypass valve port BV in the mixing chamber 58, and flows out from the mixed water port XV to the heat medium pipe C14. Then, it is sucked into the third pump 23 and discharged toward the battery 2 . As a result, the battery 2 is cooled because the heat medium whose temperature is lowered is circulated in the battery 2 .

From the heat medium flowing out to the heat medium pipe C16 through the battery 2, the heat medium originally circulating in the closed loop of the temperature control circuit 42 flows to the heat medium pipe C42, and passes through the heat medium pipe C10 to the low-temperature heat medium. The amount of the heat medium introduced from the circuit 43 is diverted to the heat medium pipe C12 and flows into the low temperature side reservoir 61 of the reservoir 26 via the check valve 41 and the heat medium pipe C13.

The heat medium flowing into the low temperature side storage chamber 61 is temporarily stored, flows out from the heat medium pipe C46, reaches the three-way valve 34, and is returned to the low temperature heat medium circuit 43 (indicated by the dashed arrow in FIG. 6). This is the third path state of the heat medium circuit 4 . At this time, the heat medium flowing through the high temperature heat medium circuit 44 is stored in the high temperature side storage chamber 63 of the storage unit 26, but the heat insulating wall 62 separates the two chambers 61 and 63, so that the high temperature heat medium circuit Heat exchange between the heat medium in 44 and the heat medium in the low temperature heat medium circuit 43 is prevented or minimized.

The battery 2 is cooled by the low temperature heat medium introduced from the low temperature heat medium circuit 43 as described above, and the temperature of the heat medium (mixed heat medium) in the mixing chamber 58 of the thermo valve 30 rises to the predetermined value T2. When the temperature becomes lower, the temperature sensing part 54 closes the opening 59 by the main valve 52 based on the temperature of the heat medium in the mixing chamber 58 . As a result, the state is returned to the second path state, and the heat medium returns to the form of circulating in the closed loop of the temperature control circuit 42 . As described above, the heat medium flowing through the high-temperature heat medium circuit 44 and the heat medium flowing through the low-temperature heat medium circuit 43A are selectively introduced into the temperature control circuit 42 by the thermo valve 31 and the thermo valve 30, and the battery 2 is optimally maintained. A temperature range (eg, a target temperature of +10° C. or higher and +40° C. or lower) is maintained.

In the state (first path state) in which the heat medium is introduced from the high-temperature heat medium circuit 44 to the temperature control circuit 42 as described above, part of the heat medium that has passed through the battery 2 is shown by the dashed arrow in FIG. , the heat medium flows into the low temperature side storage chamber 61 of the storage portion 26, but the upper portions of the low temperature side storage chamber 61 and the high temperature side storage chamber 63 in the storage portion 26 are , are communicated as described above, the heat medium flowing over the heat insulating wall 62 flows into the high temperature side storage chamber 63 side. As a result, the amount of heat medium in both chambers 61 and 63 is adjusted.

(4) Cooling Mode and Temperature Control of Battery (Temperature Control Target) 2 Next, the cooling mode by the control device 6 will be described. Each arrow in FIG. 7 indicates how the heat medium flows in the cooling mode. In the cooling mode, the control device 6 sets the three-way valve 32 in a state in which only the heat medium pipes C1 and C2 are communicated, and the three-way valve 33 in a state in which the heat medium pipes C2, C4, and C10 are communicated. In addition, the three-way valve 34 is put in a state in which the heat medium pipes C5, C6, and C46 are communicated, and the three-way valve 35 is put in a state in which only the heat medium pipes C6 and C7 are communicated. In addition, the three-way valve 36 is put in a state in which only the heat medium pipe C17 and the heat medium pipe C24 are communicated, and the three-way valve 37 is put in a state in which only the heat medium pipe C24 and the heat medium pipe C25 are communicated. Also, the three-way valve 39 is switched to a state in which only the heat medium pipe C26 and the heat medium pipe C27 are communicated, and the three-way valve 38 is switched to a state in which only the heat medium pipe C27 and the heat medium pipe C21 are communicated.

Then, the compressor 7, the pumps 21, 22, 23 and the indoor fan 49 are operated. As a result, the heat medium discharged from the first pump 21 is circulated in the low-temperature heat medium circuit 43 while being sucked into the first pump 21 through the cooling unit 13 and the cooler core 47 in sequence. Also, the heat medium discharged from the second pump 22 is circulated by being sucked into the second pump 22 through the heating unit 14 and the radiator 29 in sequence.

On the other hand, when the compressor 7 is operated, the refrigerant releases heat in the radiator 8 and absorbs heat in the heat absorber 11 in the same manner as described above. Cooled. Since the cooled low-temperature heat medium is circulated to the cooler core 16, the air supplied from the indoor fan 49 into the vehicle interior is cooled by the cooler core 16, thereby cooling the vehicle interior. On the other hand, in the radiator 8, the heat medium flowing through the heating portion 14 is heated by the high-temperature refrigerant. This heated high-temperature heat medium is circulated to the radiator 29 and radiates heat to the outside air.

At the beginning of the operation, the temperature of the heat medium circulating in the temperature control circuit 42 is also lower than the above-mentioned predetermined value T2, so the heat medium discharged from the third pump 23 is supplied to the thermo valve 30 via the battery (temperature control target) 2. As a result, the water is sucked into the third pump 23 again and circulated in the closed loop of the temperature control circuit 42 . That is, the thermo valve 30 opens the bypass valve port BV with the bypass valve 53 and closes the opening 59 with the main valve 52 based on the temperature of the heat medium flowing into the mixing chamber 58 from the mixed water port XV. Thus, the heat medium is circulated in the closed loop of the temperature control circuit 42 . A solid arrow in FIG. 7 indicates this state, which is referred to as a fourth path state of the heat medium circuit 4.

Thereafter, the self-heating of the battery 2 increases the temperature of the heat medium circulating in the closed loop of the temperature control circuit 42 . When the temperature of the heat medium flowing into the mixing chamber 58 from the bypass valve port BV of the thermo valve 30 reaches or exceeds the predetermined value T2 (+40° C.), the temperature sensing part 54 detects that the heat medium in the mixing chamber 58 is Based on the temperature, the main valve 52 is moved to start opening the opening 59 . As a result, part of the low-temperature heat medium flowing through the low-temperature heat medium circuit 43 is diverted by the three-way valve 33, passes through the heat medium pipe C10, enters the thermo valve 31 from the main valve port MV, and enters the mixing chamber 58 from the opening 59. (indicated by the dashed arrow in FIG. 7).

The heat medium flowing from the opening 59 is mixed with the heat medium flowing from the bypass valve port BV of the thermo valve 30 in the mixing chamber 58, and flows out from the mixed water port XV to the heat medium pipe C14. Then, it is sucked into the third pump 23 and discharged toward the battery 2 . As a result, the battery 2 is cooled because the heat medium whose temperature is lowered is circulated in the battery 2 .

From the heat medium flowing out to the heat medium pipe C16 through the battery 2, the heat medium originally circulating in the closed loop of the temperature control circuit 42 flows to the heat medium pipe C42, and passes through the heat medium pipe C10 to the low-temperature heat medium. The amount of the heat medium introduced from the circuit 43 is diverted to the heat medium pipe C12 and flows into the low temperature side reservoir 61 of the reservoir 26 via the check valve 41 and the heat medium pipe C13. The heat medium flowing into the low temperature side storage chamber 61 is temporarily stored, flows out from the heat medium pipe C46, reaches the three-way valve 34, and is returned to the low temperature heat medium circuit 43 (indicated by the dashed arrow in FIG. 7). This state is referred to as the fifth path state of the heat medium circuit 4 .

The battery 2 is cooled by the low temperature heat medium introduced from the low temperature heat medium circuit 43 as described above, and the temperature of the heat medium (mixed heat medium) in the mixing chamber 58 of the thermo valve 30 rises to the predetermined value T2. When the temperature becomes lower, the temperature sensing part 54 of the thermo valve 30 closes the opening 59 by the main valve 52 based on the temperature of the heat medium in the mixing chamber 58 . As a result, the state is returned to the fourth path state, and the heat medium returns to the form of circulating in the closed loop of the temperature control circuit 42 . As described above, even in the cooling mode, the battery 2 is maintained within the optimum temperature range (for example, a target temperature of +10° C. or higher and +40° C. or lower).

As described above, according to the present invention, the thermo valves 31 and 30 (temperature adjustment valves) selectively introduce the heat medium flowing through the high-temperature heat medium circuit 44 and the heat medium flowing through the low-temperature heat medium circuits 43 and 43A into the temperature control circuit 42. part), the heat medium of the high-temperature heat medium circuit 44 and the low-temperature heat medium circuits 43, 43A is passed through the battery 2 of the temperature control circuit 42 to efficiently control the temperature of the battery 2 with little heat exchange loss. can be realized.

In this case, since the storage part 26 for storing the heat medium is provided on the path for returning the heat medium from the temperature control circuit 42 to the high temperature heat medium circuit 44 or the low temperature heat medium circuits 43, 43A, the high temperature heat medium circuit 44 and the low temperature heat medium circuit It is also possible to eliminate uneven distribution of the heat medium in the heat medium circuit 43 . In addition, since the structure is such that the reservoir 26 (reserve tank) is provided, an increase in cost can be minimized.

In the embodiment, the storage section 26 includes a high temperature side storage chamber 63 having a high temperature side outlet 63A that returns the heat medium to the high temperature heat medium circuit 44, and a low temperature side outlet 61A that returns the heat medium to the low temperature heat medium circuits 43 and 43A. When the thermo valve 31 introduces the heat medium from the high temperature heat medium circuit 44 to the temperature control circuit 42, the high temperature side storage room 63 of the storage unit 26 and the temperature control circuit 42 are connected. Since the thermo valve 45 (flow path switching unit) is provided, the heat medium introduced from the high temperature heat medium circuit 44 is transferred from the high temperature side storage chamber 63 of the storage unit 26 to the high temperature heat medium circuit 44 and from the low temperature heat medium circuit 43. The introduced heat medium can be returned from the low-temperature side reservoir 61 of the reservoir 26 to the low-temperature heat medium circuits 43 and 43A.

In this case, in the embodiment, the high temperature side storage chamber 63 and the low temperature side storage chamber 61 of the storage section 26 are separated by the heat insulating wall 62, so that the heat medium returning to the high temperature heat medium circuit 44 and the low temperature heat medium circuits 43 and 43A Heat exchange with the returning heat medium is suppressed, and heat loss in each circuit 44, 43 (43A) can also be suppressed. Further, since the upper portions of the high temperature side storage chamber 63 and the low temperature side storage chamber 61 are communicated with each other, the heat medium introduced from the high temperature heat medium circuit 44 flows into the low temperature side storage chamber 61 through the temperature control circuit 42. Even in this case, the amount of heat medium is adjusted between the two chambers 61 and 63, so that the low temperature storage chamber 61 becomes full and the heat medium flows backward to the temperature control circuit 42 side. become.

Further, in the embodiment, the thermo valve 31 (temperature control unit) introduces the heat medium into the temperature control circuit 42 when the temperature of the heat medium flowing through the high-temperature heat medium circuit 44 is lower than the predetermined value T1. , excessive heating of the battery 2 can be prevented.

Further, when the temperature of the heat medium flowing through the temperature control circuit 42 becomes equal to or higher than another predetermined value T2 higher than the predetermined value T1, the thermo valve 30 (temperature adjustment unit) causes the low-temperature heat medium circuits 43 and 43A to Since the heat medium is introduced into the temperature control circuit 42, overheating of the battery 2 can be reliably prevented.

In this case, in the embodiment, the temperature adjustment part and the flow path switching part are replaced by a thermo valve, which is a flow path switching valve that has a temperature sensing part 54 that senses the temperature of the fluid flowing inside and switches the flow path of the fluid. Since it is configured, electronic control becomes unnecessary, and the cost of the system can be reduced.

It should be noted that the object of temperature control can be the battery 2 mounted on the electric vehicle, the electric motor for running the electric vehicle, and the inverter for driving the electric motor for running.

In the embodiment, the high-temperature heat medium circuit 44 has a heater core 17 for circulating the heat medium heated by the heating unit 14 to heat the interior of the vehicle. Further, the low-temperature heat medium circuit 43 has a cooler core 16 for circulating the heat medium cooled by the cooling unit 13 to cool the interior of the vehicle. A heat pump circuit 3 having a compressor 7, a radiator 8, an expansion valve 9, and a heat absorber 11 is provided, and the radiator 8 and the heating section 14 of the high-temperature heat medium circuit 44 are provided in a heat exchange relationship, The heat absorber 11 and the cooling part 13 of the low-temperature heat medium circuit 43, 43A are provided in a heat exchange relationship.

As a result, the temperature of the battery 2 can be controlled using the heat pump circuit 3, the high-temperature heat medium circuit 44, and the low-temperature heat medium circuits 43 and 43A for air-conditioning the interior of the electric vehicle. Further, when the battery 2 does not need to be heated, the heat medium flowing through the high-temperature heat medium circuit 44 does not flow into the temperature control circuit 42, so that the heat medium with a higher temperature is circulated through the heater core 17. Heating of the passenger compartment can also be performed without any trouble. Furthermore, when the battery 2 does not need to be cooled, the heat medium flowing through the low-temperature heat medium circuit 43 does not flow to the battery 42, so that a heat medium with a lower temperature is circulated through the cooler core 16. cooling can be performed without any trouble.

It goes without saying that the numerical values and configurations shown in the examples are not limited to them, and can be changed without departing from the scope of the present invention. In particular, in the embodiments, the thermo valve switches the flow path of the heat medium, but in the present application, the concept includes the case where a small amount flows in both directions without completely switching. Further, in the embodiments, the vehicle air conditioner for an electric vehicle was taken up as an example, but the inventions other than claims 7 to 9 are not limited to this, and the heat medium is circulated to adjust the temperature of the object to be temperature controlled. The present invention can be applied to various heat management systems.

1 Thermal management system 2 Battery (temperature control target)
3 heat pump circuit 4 heat medium circuit 7 compressor 8 radiator 9 expansion valve (decompression part)
11 heat absorber 13 cooling unit 14 heating unit 16 cooler core 17 heater core 21 first pump 22 second pump 23 third pump (circulation unit)
26 storage part 30, 31 thermo valve (temperature control part)
32 to 39 three-way valve 42 temperature control circuit 43, 43A low-temperature heat medium circuit 44 high-temperature heat medium circuit 45 thermo valve (flow path switching unit)
61 low temperature side storage chamber 61A low temperature side outlet 62 heat insulating wall 63 high temperature side storage chamber 63A high temperature side outlet

Claims (9)

A heat management system comprising a heat medium circuit that regulates temperature by circulating a heat medium to a temperature control target,
a temperature control circuit having a circulation unit that circulates the heat medium to the temperature control target;
a high-temperature heat medium circuit connected to the temperature control circuit and having a heating unit for heating the heat medium, in which the heat medium heated by the heating unit is circulated;
a low-temperature heat medium circuit connected to the temperature control circuit and having a cooling unit for cooling the heat medium, through which the heat medium cooled by the cooling unit is circulated;
a temperature control unit that selectively introduces the heat medium flowing through the high-temperature heat medium circuit and the heat medium flowing through the low-temperature heat medium circuit into the temperature control circuit;
A heat management system comprising a reservoir for storing the heat medium, provided on a path for returning the heat medium from the temperature control circuit to the high-temperature heat medium circuit or the low-temperature heat medium circuit. The storage section has a high temperature side storage chamber having a high temperature side outlet for returning the heat medium to the high temperature heat medium circuit, and a low temperature side storage chamber having a low temperature side outlet for returning the heat medium to the low temperature heat medium circuit. ,
a flow path switching unit that connects the high temperature side storage chamber of the storage unit and the temperature control circuit when the temperature control unit introduces the heat medium from the high temperature heat medium circuit to the temperature control circuit The thermal management system of claim 1, characterized by: 3. The heat according to claim 1, wherein the high-temperature side storage chamber and the low-temperature side storage chamber of the storage part are partitioned by a heat insulating wall, and upper portions thereof are communicated with each other. management system. 4. The temperature control unit introduces the heat medium into the temperature control circuit when the temperature of the heat medium flowing through the high-temperature heat medium circuit is lower than a predetermined value. A thermal management system according to any of the preceding. The temperature control unit transfers the heat medium from the low-temperature heat medium circuit to the temperature control circuit when the temperature of the heat medium flowing through the temperature control circuit becomes equal to or higher than another predetermined value higher than the predetermined value. 5. The heat management system according to any one of claims 1 to 4, characterized by introducing a. The temperature adjustment unit, or the temperature adjustment unit and the flow path switching unit, is a flow path switching valve that has a temperature sensing part that senses the temperature of the fluid flowing therein and switches the flow path of the fluid. A thermal management system according to any one of claims 1 to 5. 7. The heat according to any one of claims 1 to 6, wherein the temperature control object is a battery mounted on a vehicle, a motor for driving the vehicle, or an inverter for driving the motor. management system. The high-temperature heat medium circuit has a heater core for circulating the heat medium heated by the heating unit to heat the interior of the vehicle,
8. The low-temperature heat medium circuit has a cooler core for circulating the heat medium cooled by the cooling unit to cool the interior of the vehicle. The thermal management system described in . A compressor that compresses a refrigerant, a radiator that dissipates heat from the refrigerant discharged from the compressor, a decompression section that decompresses the refrigerant that has dissipated heat from the radiator, and a heat absorption of the refrigerant decompressed by the decompression section. a heat pump circuit having a heat absorber that causes
the radiator and the heating portion of the high-temperature heat medium circuit are provided in a heat exchange relationship,
9. A heat management system according to claim 1, wherein said heat absorber and said cooling portion of said low-temperature heat medium circuit are provided in a heat exchange relationship.

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