JP-7854856-B2 - Thermal management system

Inventors

• 岩▲崎▼ 渉
• 高沢 修
• 佐藤 正亮
• 清水 宣伯

Assignees

• サンデン株式会社

Dates

Publication Date

20260507

Application Date

20220523

Claims (10)

1. A thermal management system comprising a heat storage unit that stores heat generated by a heat source, a heat utilization unit that utilizes the heat stored in the heat storage unit, and a control device that switches between a heat storage mode in which heat is stored in the heat storage unit and a heat utilization mode in which the heat stored in the heat storage unit is utilized by the heat utilization unit, The control device is An information acquisition unit that acquires information usable for heat storage control along the vehicle's travel path, A heat storage possible section estimation unit estimates the heat storage possible section in the travel route in which heat can be stored in the heat storage unit, based on the information acquired by the information acquisition unit . The heat storage unit has a heat storage usable time estimation unit that estimates the usable time for which the heat stored in the heat storage unit can be used in the heat utilization unit . A thermal management system characterized in that, if the heat storage utilization time estimated by the heat storage utilization time estimation unit is greater than or equal to the time it takes to reach the heat storage available section estimated by the heat storage available section estimation unit, the heat storage utilization mode is executed .
2. The heat management system according to claim 1, characterized in that the heat storage area estimation unit estimates the heat storage efficiency and/or the amount of heat that can be stored in a predetermined section on the travel path from the information acquired by the information acquisition unit, and estimates the section as the heat storage area if the estimated result is greater than or equal to a predetermined value.
3. The heat management system according to claim 2, wherein the heat storage section estimation unit estimates the heat storage efficiency and/or the amount of heat that can be stored in a tunnel on the travel route from the information acquired by the information acquisition unit, and estimates the tunnel as the heat storage section if the estimated result is greater than or equal to a predetermined value.
4. The heat management system according to claim 2, characterized in that the heat storage area estimation unit estimates the amount of heat that can be stored on a slope on the travel route from the information acquired by the information acquisition unit, and estimates the slope as the heat storage area if the estimated result is greater than or equal to a predetermined value.
5. The heat management system according to claim 2, characterized in that the heat storage area estimation unit estimates the heat storage efficiency and/or the amount of heat that can be stored in a sunny area on the travel path from the information acquired by the information acquisition unit, and estimates the sunny area as the heat storage area if the estimated result is greater than or equal to a predetermined value.
6. The heat management system according to claim 2, characterized in that the heat storage area estimation unit estimates the heat storage efficiency and/or the amount of heat that can be stored in shaded areas along the travel path from the information acquired by the information acquisition unit, and estimates the shaded area as the heat storage area if the estimated result is greater than or equal to a predetermined value.
7. The thermal management system according to claim 1, characterized in that the information usable for heat storage control acquired by the information acquisition unit is V2X (Vehicle to Everything) information.
8. The thermal management system according to claim 1, characterized in that the information usable for heat storage control acquired by the information acquisition unit is past driving data.
9. The heat source is one of the following: a heat pump device having a refrigerant circuit, a motor for driving an electric vehicle, an inverter for driving the motor, an electric heater, or a combination thereof. The heat storage unit is a battery mounted on the electric vehicle, The heat management system according to any one of claims 1 to 8, characterized in that the heat utilization unit is a heat exchanger for air conditioning the interior of the electric vehicle.
10. The thermal management system according to claim 9, further comprising a heat transfer medium circuit for circulating a heat transfer medium in the heat source, the heat storage unit, and the heat utilization unit.

Description

This invention relates to a thermal management system that stores heat generated by a heat source in a heat storage unit, and utilizes the heat stored in this heat storage unit in a heat utilization unit. Conventionally, batteries and motors in electric vehicles (electric cars, hybrid cars, etc.) generate heat. Therefore, devices have been developed that utilize the battery as a heat storage unit, circulating a heat transfer medium (such as water) to regulate temperature while storing motor waste heat in the battery. This stored heat is then transported by a refrigerant in a heat pump system (refrigerant circuit) to a heat exchanger (heat utilization unit) for in-cabin air conditioning, where it is used for the vehicle's interior air conditioning (see, for example, Patent Document 1). Furthermore, vehicle air conditioning systems have been developed that determine the heat storage section based on the driving section and operate the heat pump device at the most efficient time (see, for example, Patent Document 2). In addition, a device has been developed that optimizes battery temperature and air conditioning temperature based on V2X (Vehicle to Everything) information such as traffic information while connected to a charger (see, for example, Patent Document 3). Japanese Patent Publication No. 2014-37180Japanese Patent Publication No. 2020-189552Patent No. 5937693 This is a block diagram illustrating the configuration of one embodiment of the thermal management system of the present invention.Figure 1 is a functional block diagram relating to the heat storage amount optimization control of the control device.This is a circuit diagram of the heat transfer medium and refrigerant according to one embodiment of the thermal management system of the present invention (heating operation + heat storage mode of the control device in Figure 1).Figure 1 shows the heat transfer medium circuit and refrigerant circuit diagram for the heating operation + heat storage utilization mode of the control device.Figure 1 shows the heat transfer medium circuit and refrigerant circuit diagram for the cooling operation + heat storage mode of the control device.Figure 1 shows the heat transfer medium circuit and refrigerant circuit diagram for the cooling operation + heat storage utilization mode of the control device.This figure shows an example of a control map for the control device during heating operation.This figure shows an example of a control map for the control device shown in Figure 1 during cooling operation.Figure 1 is a flowchart illustrating one embodiment of the heat storage optimization control of the control device (Embodiment 1).This is a flowchart that continues from Figure 9.This is a flowchart illustrating another embodiment of the heat storage optimization control of the control device shown in Figure 1 (Embodiment 2).This is a flowchart that continues from Figure 11.Figure 1 is a flowchart illustrating another embodiment of the heat storage optimization control of the control device (Embodiment 3).This is a flowchart that continues from Figure 13.Figure 1 is a flowchart illustrating another embodiment of the heat storage optimization control of the control device (Embodiment 4).This is a flowchart that continues from Figure 15.Figure 1 is a flowchart illustrating another embodiment of the heat storage optimization control of the control device (Embodiment 5).This is a flowchart that continues from Figure 17. The embodiments of the present invention will be described in detail below with reference to the drawings.