KR20200050505A - Heating and Cooling apparatus for electric vehicle - Google Patents

Abstract

The present invention relates to a heating and cooling device for an electric vehicle, a main flow part through which a heat medium can flow through a battery and a pump operation, a heat exchange through which a working fluid connected to the main flow part and exchanging heat with the heat medium can flow Group, connected to the main flow portion and the sub-flow portion to bypass the heat medium so as not to pass through the heat exchanger, connected to the sub-flow portion, the heating portion to increase the temperature of the heat medium, and the main flow portion The heat medium flowing through the main flow part may be introduced and flow, and an indoor flow part, a main flow part and the sub flow part, a direction control part connecting the main flow part and the indoor flow part and setting the flow direction of the heat medium It includes.

Description

Heating and cooling device for electric vehicles {Heating and Cooling apparatus for electric vehicle}

The present invention relates to a heating and cooling device for an electric vehicle.

The electric vehicle is equipped with an electric motor and a battery for supplying electric energy to the electric motor. The electric vehicle charges the battery with electric energy and uses the charged electric energy to operate the electric motor to drive.

Batteries are very important as an electric energy source in electric vehicles. However, the efficiency of the battery decreased as it showed a sensitive change in performance with temperature. That is, lithium-ion, which is frequently used in secondary batteries, moves in the electrolyte and the anode / cathode. At this time, as the temperature decreases, the movement speed of the lithium-ion inside the battery decreases and the chemical reaction slows down, resulting in the battery at a temperature below cryogenic (-5 ℃). The efficiency of energy storage and power supply drops sharply. Conversely, if the temperature of the battery becomes too high, there is a risk of battery component damage and explosion. Therefore, in order to obtain optimal battery efficiency, it is necessary to preheat if the temperature around the battery is lower than the optimal temperature, and if it is higher than the optimal temperature, it must be cooled.

Meanwhile, in the electric vehicle, a system for indoor cooling / heating and a system for preheating / cooling the battery are separately constructed. If the system is used separately, the temperature control system can exhibit optimal performance, but the overall electric energy consumption rate is significantly increased, which shortens the driving distance of the electric vehicle.

Published Patent No. 10-1998-054590 (1998.09.25.) Registered Patent No. 10-1416416 (2014.07.01.)

The present invention provides an air conditioning system for an electric vehicle that can select an indoor cooling / heating or battery preheating / cooling operation method according to the outdoor temperature and battery temperature of the electric vehicle.

In the heating and cooling device for an electric vehicle according to an embodiment of the present invention, a main flow part through which a heating medium flows through a battery and a pump operation, and a working fluid connected to the main flow part and exchanging heat with the heating medium flows. A heat exchanger capable of being connected to the main flow part and a sub flow part bypassing the heat medium so as not to pass through the heat exchanger, a heating part connected to the sub flow part and raising the temperature of the heat medium, and the main flow part The heat medium that is connected and flows through the main flow part can be introduced and flows, and the indoor flow part, the main flow part and the sub flow part, the main flow part and the indoor flow part are connected and the flow direction of the heat medium is set. It includes a direction control unit.

The direction control unit may include a three-way valve or a four-way valve.

The heating unit may include an induction heater or a PTC heater.

The heating and cooling device for an electric vehicle may further include a heat pump connected to the heat exchanger.

The heat medium of the main flow part may be heated by heat exchange with a heat source of the heating part or a working fluid of the heat exchanger.

The heat medium of the main flow part may be cooled by heat exchange with the working fluid of the heat exchanger.

The heating and cooling device for an electric vehicle according to the present invention includes a main flow part through which a heat medium can flow through a battery and a pump, and a heat exchanger through which a working fluid connected to the main flow part and heat-exchanged with the heat medium can flow, A heating part connected to the main flow part to increase the temperature of the heat medium, an indoor flow part connected to the main flow part, and the indoor flow part and the main flow part to allow the heat medium to flow through the main flow part to flow. A sub-flow unit, the main flow unit and the indoor flow unit may include a direction control unit for setting the flow direction of the heat medium.

The heating and cooling device for an electric vehicle according to the present invention includes a main flow part through which a heat medium can flow through a battery and a pump, and a heat exchanger through which a working fluid connected to the main flow part and heat-exchanged with the heat medium can flow, A sub-flow unit connected to the main flow unit and capable of bypassing and flowing so that the heat medium does not pass through the heat exchanger, a heating unit connected to the sub-flow unit and raising the temperature of the heat medium, and a connection to the main flow unit And the main flow portion, the main flow portion, and the main flow portion, and the main flow portion and the sub flow portion, and the main flow portion to bypass the heat medium so as not to pass through the battery. A direction control unit connecting the eastern part and the bypass flow part and setting the flow direction of the heat medium It can be included.

It may be further connected to the main flow portion and a heat dissipation flow portion through which the thermal fluid flowing through the battery or the indoor flow portion can flow.

The direction control part may connect the heat dissipation flow part and the main flow part.

According to an embodiment of the present invention, when the battery is preheated or heated indoors in an electric vehicle, in the case of an extremely low temperature, the battery is heated and heated indoors using a heating unit, and in the case of a low temperature where the chemical reaction of the battery is easy Preheat the room heating and battery using heat pump and heat exchanger. Accordingly, it is possible to increase the driving distance of the electric vehicle by reducing the power consumption of the battery.

1 is a block diagram of an electric vehicle air conditioning system according to an embodiment of the present invention.
Figure 2 is a flow chart showing a battery preheating state in an extremely low temperature state through the heating unit.
Figure 3 is a flow chart showing a battery preheating and indoor heating in a low temperature state through a heat exchanger.
Figure 4 is a flow chart showing the battery cooling state through the heat dissipation fluid.
Figure 5 is a flow chart showing the battery cooling and room cooling through the heat exchanger.
6 is a block diagram of an electric vehicle heating and cooling device according to another embodiment of the present invention.
7 is a block diagram of an electric vehicle heating and cooling device according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains can easily practice. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. The same reference numerals are used for similar parts throughout the specification.

Then, a heating and cooling device for an electric vehicle according to an embodiment of the present invention will be described with reference to FIG. 1. 1 is a block diagram of an air conditioner for an electric vehicle according to an embodiment of the present invention.

Referring to FIG. 1, the heating and cooling device 1 for an electric vehicle according to the present exemplary embodiment includes a main flow part 10, a heat exchanger 20, a sub flow part 30, a heating part 40, and an indoor flow part. It includes 50 and a direction control unit 70 and is installed in an electric vehicle to select an electric vehicle indoor cooling / heating or battery preheating / cooling operation method according to the outdoor temperature and battery temperature of the electric vehicle.

The main flow part 10 may include a pipe through which a heat medium including cooling water flows. The heat medium is not limited to cooling water. The main flow portion 10 is formed in a peruvian form so that the heat medium can continuously flow along the main flow portion 10. A pump P for applying pressure for the heat medium flow is disposed in the main flow part 10. The main moving part 10 may pass through a battery B that supplies electrical energy to an electric motor, an electric component, and the like of an electric vehicle. At this time, the heat medium flowing through the main flow part 10 may exchange heat with the heat of the battery B to increase or decrease the temperature of the battery B. The heat medium passing through the battery B may flow in the pump P direction.

The heat exchanger 20 is connected to the main flow part 10. Accordingly, the heat medium flowing through the main flow unit 10 may pass through the heat exchanger 20. The heat exchanger 20 is connected to the heat pump 21.

The heat pump 21 operates when the outdoor temperature of the electric vehicle is 5 to 20 ° C, and a heat exchanger 20 connected to the heat pump 21 through operation of the heat pump 21 can flow a working fluid to exchange heat with a heat medium. have. The heat medium can exchange heat with the working fluid. At this time, the temperature of the heating medium may be higher or lower. The heat medium passing through the heat exchanger 20 may flow along the main flow part 10 to pass through the battery B. The detailed structure of the heat exchanger 20 and the heat pump 21 can be applied to a well-known configuration, the description of the detailed structure is omitted.

 The direction control unit 70 includes first to fourth valves 71, 72, 73, and 74, and is disposed on the main flow unit 10 to control the flow direction of the heat medium that flows. Here, the first and second valves 71 and 72 include four-way valves, and the third and fourth valves 73 and 74 may include three-way valves.

The first and second valves 71 and 72 sandwich the heat exchanger 20, and the third and fourth valves 73 and 74 are disposed with the pump P interposed therebetween. In addition, the first and third valves 71 and 73 are adjacent, and the second and fourth valves 72 and 74 have a battery B therebetween. The structure and position of the first to fourth valves 71, 72, 73, and 74 may be changed according to the design of an air conditioner for automobiles.

The sub-flow part 30 includes a pipe through which the heat medium flows, and one end is connected to the first valve 71 and the other end is connected to the second valve 72. The first valve 71 is such that when the outdoor temperature of the electric vehicle is less than -20 to 5 ° C, the heat medium flowing through the main flow part 10 does not pass through the heat exchanger 20 but flows into the sub flow part 30 to flow. You can control the flow direction. At this time, since the heat medium does not pass through the heat exchanger 20, the heat pump 21 is in a stopped state. The heat medium flowing through the sub-flow part 30 may flow into the main flow part 10 by the second valve 72 and flow along the main flow part 10.

The heating unit 40 may include an induction heater. Since the induction heater is a method of heating by adjusting the resonance frequency, the response speed is fast and the heat capacity control is easy. Accordingly, the heating medium can be heated at a high speed.

However, the heating unit 40 may include a PTC heater. The heating unit 40 may be supplied with electric energy through a dedicated battery (not shown). The heating element of the heating unit 40 increases the temperature by heating the heat medium flowing through the sub-flow unit 30 using the supplied electric energy. The heat medium having a high temperature may flow into the main flow part 10 through the second valve 72 and flow through the main flow part 10 to pass through the battery B.

The heating medium 40 may be used to heat the heating medium for preheating the battery B and heating the room. That is, the heating medium 40 required for heating the battery B and the room can be heated by using one heating unit 40.

The indoor flow part 50 includes piping through which the heat medium can flow, and one end is connected to the second valve 72 and the other end is connected to the fourth valve 74. The heat medium that flows through the main flow unit 10 via the heat exchanger 20 or the heating unit 40 under the control of the second valve 72 may flow into the indoor flow unit 50. At this time, the second valve 72 may control the heat medium to flow simultaneously in the direction of the battery B and the direction of the indoor flow unit 50.

The temperature control unit 70 is connected to the indoor flow unit 50. Accordingly, the heating medium flowing through the indoor flow unit 50 may pass through the temperature control unit 70. Meanwhile, air flowing into the interior of the electric vehicle may pass through the temperature control unit 70. The air may exchange heat with the heat medium through the temperature control unit 70. At this time, the temperature of the air may be high or low. The heat medium passing through the temperature control unit 70 may be introduced into the main flow unit 10 through the fourth valve 74 and flow in the pump P direction.

The heating and cooling device 1 for an electric vehicle according to an embodiment of the present invention may further include a heat dissipation flow unit 80.

The heat dissipation flow unit 80 may include a pipe through which the heat medium flows. One end of the heat dissipation flow portion 80 is connected to the third valve 73 and the other end is connected to the first valve 71. The heat medium passing through the pump P in the main flow part 10 may flow into the heat dissipation flow part 80.

A radiator 90 is disposed in the heat dissipation flow portion 80. The heat medium that flows the heat dissipation flow portion 80 through the radiator 90 is passed. The radiator 90 may release heat of the heated heat medium to lower the temperature of the heat medium. The heat medium having a lower temperature may flow into the main flow part 10 under the control of the first valve 71 and flow in the direction of the battery B.

On the other hand, if the heat of the heat medium in the radiator 90 is not discharged below a set value, the third valve 73 blocks the heat medium flowing into the heat dissipation flow unit 80 so that it can flow directly in the direction of the heat exchanger 20. The flow direction of the heating medium can be controlled.

The heating and cooling device 1 for an electric vehicle may selectively perform battery preheating operation, indoor heating operation, battery cooling operation, and indoor cooling operation according to the outdoor temperature and battery temperature of the electric vehicle. In addition, the battery preheating operation and the indoor heating operation, and the battery cooling operation and the indoor cooling operation can be performed simultaneously.

Next, with reference to FIGS. 2 to 5, the operation state of the heating and cooling device for an electric vehicle will be described.

2 is a flowchart showing a battery preheating state in an extremely low temperature state through a heating unit, FIG. 3 is a flowchart showing a battery preheating and indoor heating state in a low temperature state through a heat exchanger, and FIG. 4 is a flowchart showing a battery cooling state through a radiator And, Figure 5 is a flow chart showing the battery cooling and room cooling through the heat exchanger.

The battery preheating and indoor heating operation will be described with reference to FIGS. 2 and 3.

First, referring to FIG. 2, battery preheating and indoor heating operation using a heating unit will be described.

Referring to FIG. 2, in an extremely low temperature of -20 ° C or less, the battery of an electric vehicle has a slow chemical reaction, and thus, the efficiency of energy storage and power supply rapidly decreases. Accordingly, the battery is preheated to maintain a predetermined temperature.

For the battery preheating operation, the first valve 71 connects the main flow part 10 and one end of the sub flow part 30, and the second valve 72 has a heating medium that flows through the sub flow part 30. B) to connect the other end of the sub-flow unit 30 and the main flow unit 10 so as to flow in the direction.

With the operation of the pump P, the heating medium flows through the main flow portion 10 and is heated to a predetermined temperature by the heating portion 40 while passing through the sub flow portion 30 under the control of the first valve 71. The heated heat medium flows along the main flow part 10 and passes through the battery B. At this time, the heat of the heat medium is transferred to the battery, and the battery B is preheated. The heating medium via the battery B may be heated again by flowing to the heating unit 40. The battery is preheated by repeating this series of processes. The battery B that has reached the proper temperature (4 ° C) by preheating can smoothly supply electric energy to the electric motor and electric energy to each electric component.

On the other hand, when the electric vehicle is started due to the supply of electric energy and indoor heating is required, the second valve 72 has a heating medium having a temperature increased by the heating unit 40 in the direction of the battery (B) and the indoor moving unit (50). The flow direction can be controlled so that they can flow simultaneously.

When the heat medium passes through the temperature control unit 70, the temperature of the air flowing into the room heats up with the heat medium of the temperature control unit 70. Accordingly, the air having a high temperature flows into the interior of the electric vehicle, and the room is heated. The heat medium passing through the temperature control part 70 may be introduced into the main flow part 10 through the fourth valve 74 and flow back to the heating part 40 together with the heat medium passed through the battery B to be heated. have. Accordingly, indoor heating and battery preheating may be simultaneously performed through the control of the second valve 72.

Next, the indoor heating and the battery preheating operation through the heat exchanger will be described with reference to FIG. 3.

Referring to FIG. 3, when the outdoor temperature of the electric vehicle is 5 to 20 ° C., the heat pump 21 may operate. At this time, the heat pump 21 increases the temperature of the working fluid in order to increase the temperature of the heat medium. A high-temperature working fluid may flow through the heat exchanger 20 by the heat pump 21. Then, the first valve 71 controls the heat medium flow direction so that the heat medium of the main flow part 10 flows in the direction of the heat exchanger 20 without flowing in the sub flow part 30 in the direction. Since the heating medium does not flow through the sub-flow part 30, the heating part 40 does not operate.

The heat medium flowing in the heat exchanger 20 direction exchanges heat with the working fluid flowing in the heat exchanger 20. The temperature of the heat medium may be increased by the high temperature working fluid. The heating medium having a high temperature may be introduced into the indoor flow unit 50 under the control of the second valve 72 to pass through the temperature control unit 70 to perform indoor heating. Indoor heating and battery preheating may be simultaneously performed through the control of the second valve 72.

In addition, although the heat pump 21 may be operated when the outdoor temperature is 5 to 20 ° C. in the above description, the heat pump 21 may be operated after the heating unit 40 is operated.

According to the present embodiment, in the case of preheating or heating the battery of the electric vehicle, in the case of cryogenic temperature, the heating unit is used to heat the battery and to heat the room, and in the case of low temperature, which facilitates chemical reaction of the battery, a heat pump And heat exchanger to preheat the room heating and battery. Accordingly, it is possible to increase the driving distance of the electric vehicle by reducing the power consumption of the battery.

Next, the battery cooling and the indoor cooling operation will be described with reference to FIGS. 4 and 5.

First, the battery cooling operation through the radiator will be described with reference to FIG. 4.

Referring to FIG. 4, if the temperature of the battery B is higher than an appropriate temperature, it must be cooled.

The third valve 73 connects the main flow portion 10 and the heat dissipation flow portion 80, and the first valve 71 connects the heat dissipation flow portion 80 and the main flow portion 10. At this time, the first valve 71 blocks the heat medium from flowing into the sub-flow unit 30. In addition, the second valve 72 also blocks the heat medium of the main flow part 10 from flowing into the indoor flow part 50.

With the operation of the pump P, the heat medium of the main flow part 10 flows along the main flow part 10. The third valve 73 controls the flow direction of the heat medium so that the heat medium of the main flow part 10 flows through the heat dissipation flow part 80. The temperature of the heat medium passing through the radiator 90 through the heat dissipation flow portion 80 may be lowered. At this time, the radiator 90 allows the temperature of the heat medium to be lower than the temperature of the battery B. The heat medium having a lower temperature flows through the main flow part 10 under the control of the first valve 71 and the second valve 72 to pass through the battery B. At this time, since the temperature of the heat medium is lower than the temperature of the battery B, the heat of the battery B is transferred to the heat medium, so that the temperature of the battery B may be lowered.

The heat medium whose temperature is increased by the heat of the battery B may be lowered again through the radiator 90 through the main flow part 10, the third valve 73, and the heat dissipation flow part 80. The battery can be cooled by continuously performing this series of processes. Meanwhile, the second valve 72 may control the heat medium flow direction so that the heat medium cooled through the radiator 90 flows in the direction of the indoor flow unit 50. At this time, the heat medium may simultaneously flow in the direction of the indoor flow unit 50 and the battery B.

Drawing Referring to Figure 5 will be described for indoor cooling and battery cooling operation through a heat exchanger.

Referring to FIG. 5, when the outdoor temperature of the electric vehicle is 35 ° C. or higher and the heat radiator 90 cannot cool the heat medium alone, the heat medium 20 is used to cool the heat medium.

At this time, the working fluid flowing through the heat exchanger 20 is in a state lower than the temperature of the heat medium. That is, the heat pump 21 according to the present embodiment lowers the temperature of the working fluid as opposed to the heat pump according to the embodiment of FIG. 3.

The third valve 73 blocks the main flow portion 10 from flowing in the direction of the heat dissipation flow portion 80, and in this case, the first valve 71 has a heat medium of the main flow portion 10, and the heat dissipation flow portion 80. And blocking the flow to the sub-flow part 30. In addition, the second valve 72 also blocks the heat medium of the main flow part 10 from flowing into the indoor flow part 50.

A working fluid having a temperature lower than that of the heat medium flows through the heat exchanger 20 by the heat pump 21. The heat medium of the main flow part 10 flows along the main flow part 10 through the heat exchanger 20 by the operation of the pump P. The heat medium heat exchanges with the working fluid in the heat exchanger 20. The heat medium whose temperature has decreased due to heat exchange is passed through the battery B. At this time, since the temperature of the heating medium is lower than that of the battery B, the heat of the battery B is transferred to the heating medium, so that the temperature of the battery B is lowered and the temperature of the heating medium may be increased. The heat medium having a high temperature may be cooled again through the heat exchanger 20 by flowing in the direction of the heat exchanger 20 without flowing the heat dissipation flow unit 80 under the control of the third valve 73. The battery is cooled by repeating this series of processes.

Meanwhile, it is possible to cool the battery B and simultaneously cool the room by controlling the second valve 72. The second valve 72 controls the flow direction of the heat medium so that the heat medium cooled in the heat exchanger 20 can simultaneously flow in the direction of the indoor flow part 50 and the battery B. The heat medium that has flowed into the indoor flow unit 50 may be cooled indoors while passing through the temperature control unit 70. The heat medium passing through the temperature control part 70 may flow into the main flow part 10 through the fourth valve 74 and flow back to the heat exchanger 20 together with the heat medium passed through the battery B to be cooled. have.

However, the second valve 72 may control the flow direction of the heat medium so that the heat medium does not flow in the direction of the battery B but flows only in the direction of the indoor flow unit 50.

On the other hand, in the above description, the third valve 73 of FIG. 3 is said to control the flow of the heat medium so that the heat medium does not flow in the direction of the heat dissipation flow part 80, but the heat medium flows through the heat dissipation flow part 80 and the radiator 90. After cooling through, the heat exchanger 20 may be passed.

Another embodiment of the present invention includes all the components except the sub-flow section 30 described above. Referring to FIG. 6, the heating unit 40 of the heating and cooling device for an electric vehicle according to the present embodiment is located between the first valve 71 and the second valve 72 and the heat exchanger 20 has a second valve 72 ) And the battery (B). Meanwhile, the first valve 71 includes a three-way valve by omitting the sub-flow unit 30. By omitting the sub-flow part 30, it is possible to efficiently perform indoor cooling / heating or battery preheating / cooling operation while minimizing the components of the heating and cooling device 1 for an electric vehicle. Other configurations may be applied to the configuration of the embodiment of FIGS. 1 to 5 as it is.

Another embodiment of the present invention includes all the components except for the indoor flow section 50 described above. Referring to FIG. 7, the temperature control unit of the heating and cooling device for an electric vehicle according to the present embodiment is located in the main flow unit 10 and is disposed between the second valve 72 and the battery B. Accordingly, the heat medium whose flow direction is controlled by the second valve 72 may pass through the temperature control unit 70. Meanwhile, the second valve 72 includes a three-way valve by omitting the indoor flow part 50.

Meanwhile, the heating and cooling device for an electric vehicle according to the present exemplary embodiment may include a battery bypass flow part 11 and a fifth valve 75. The fifth valve 75 includes a three-way valve. The fifth valve 75 is located in the main flow part 10 and is disposed between the temperature control part 70 and the battery B. The battery bypass flow part 11 includes a pipe through which the heat medium can flow. One end of the battery bypass flow part 11 is connected to the fifth valve 75 and the other end is connected to the fourth valve 74.

When the preheating or cooling operation of the battery B is not performed, the fifth valve 75 controls the flow direction of the heating medium so that the heating medium flows through the battery bypass flow part 11 without passing through the battery B. However, when performing the preheating or cooling operation of the battery B, the fifth valve 75 controls the heat medium flow direction so that the heat medium passes through the battery B. Other configurations may be applied to the configuration of the embodiment of FIGS. 1 to 5 as it is.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

1: Electric vehicle air conditioning system 10: Main fluid
11: Battery bypass fluid section 20: Heat exchanger
21: heat pump 30: sub-flow section
40: heating section 50: indoor moving section
60: temperature control unit 70: direction control unit
71: first valve 72: second valve
73: third valve 74: fourth valve
75: fifth valve 80: heat dissipation fluid
90: radiator B: battery
P: Pump

Claims (9)

Main flow part through which the heat medium can flow through the battery and pump operation,
A heat exchanger connected to the main flow part and capable of flowing a working fluid to exchange heat with the heat medium,
A sub-flow part connected to the main flow part and bypassing the heat medium so as not to pass through the heat exchanger,
A heating part connected to the sub-flow part and increasing the temperature of the heat medium,
The heat medium that is connected to the main flow part and flows through the main flow part may be introduced and flow, and the indoor flow part and
A direction control unit connecting the main flow unit, the sub flow unit, the main flow unit, and the indoor flow unit and setting a flow direction of the heat medium
Heating and cooling device for an electric vehicle comprising a. In claim 1,
The direction control unit, an air-conditioning and heating device for an electric vehicle including a three-way valve or a four-way valve. In claim 1,
The heating unit, an induction heater (induction heater) or a heating and cooling device for an electric vehicle including a PTC heater. In claim 1,
Air conditioning and heating device for an electric vehicle further comprising a heat pump connected to the heat exchanger. In claim 1,
The heating medium of the main flow part is heated and heated by heat exchange with the heat source of the heating part or the working fluid of the heat exchanger. In claim 1,
The heating medium for the electric vehicle is cooled by heat exchange with the working fluid of the heat exchanger. Main flow part through which the heat medium can flow through the battery and pump operation,
A heat exchanger connected to the main flow part and capable of flowing a working fluid to exchange heat with the heat medium,
A heating part connected to the main flow part and increasing the temperature of the heat medium,
An indoor flow part connected to the main flow part and capable of introducing and flowing the heat medium flowing through the main flow part, and
A direction control unit connecting the main flow unit, the sub flow unit, the main flow unit, and the indoor flow unit and setting a flow direction of the heat medium
Heating and cooling device for an electric vehicle comprising a. Main flow part through which the heat medium can flow through the battery and pump operation,
A heat exchanger connected to the main flow part and capable of flowing a working fluid to exchange heat with the heat medium,
A sub-flow part connected to the main flow part and capable of bypassing and flowing so that the heat medium does not pass through the heat exchanger,
A heating part connected to the sub-flow part and increasing the temperature of the heat medium,
An indoor flow part connected to the main flow part and exchanging heat with the heat medium,
A bypass flow part connected to the main flow part and bypassing the heat medium so as not to pass through the battery;
Direction control unit for connecting the main flow unit and the sub-flow unit, the main flow unit and the bypass flow unit and set the flow direction of the heating medium
Heating and cooling device for an electric vehicle comprising a. According to any one of claims 1, 7, and 8,
It is connected to the main flow part and further includes a heat dissipation flow part through which the thermal fluid flowing through the battery or the indoor flow part can flow, and the direction control part heats and cools the electric vehicle connecting the heat dissipation flow part and the main flow part. Device.

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