JP-2026075380-A - Electric vehicles
Abstract
[Problem] To properly protect the energy storage device from overheating while driving on a circuit course, while also shortening the charging time of the energy storage device in the pit. [Solution] The vehicle 10 is equipped with a battery 105, a cooling device 110, and an ECU 160. The battery 105 stores power for driving the vehicle 10. The cooling device 110 cools the battery 105. The ECU 160 controls the cooling device 110. When it is determined that the vehicle 10 is driving on a circuit course, the ECU 160 activates the cooling device 110 if the SOC of the battery 105 is above a standard value, and stops the cooling device 110 if the SOC is below a standard value. [Selection Diagram] Figure 1
Inventors
- 和田 好平
Assignees
- トヨタ自動車株式会社
Dates
- Publication Date
- 20260508
- Application Date
- 20241022
Claims (1)
- It is an electric vehicle, A power storage device for storing electricity for the operation of the aforementioned electric vehicle, A cooling device for cooling the aforementioned energy storage device, The system includes a control device for controlling the cooling device, If it is determined that the electric vehicle is traveling on a circuit course, the control device will: When the State of Cooling (SOC) of the aforementioned energy storage device is above a standard value, the cooling device is activated. An electric vehicle that stops the cooling system when the SOC is below the reference value.
Description
This disclosure relates to electric vehicles. Japanese Patent Publication No. 2023-114369 (Patent Document 1) discloses a temperature control system. This system comprises a battery, a temperature control device, and a control device. The battery stores power for the electric vehicle's operation and is charged by power supplied from an external charging facility (external charging). The temperature control device includes a cooling device such as a chiller and adjusts the battery temperature. The control device controls the temperature control device to keep the battery temperature below a predetermined temperature when an overshoot (where the battery temperature exceeds a predetermined temperature) is anticipated. Japanese Patent Publication No. 2023-114369 This is a diagram illustrating the configuration of an electric vehicle according to an embodiment.This diagram shows the layout of the circuit course on which this electric vehicle will run.This is a flowchart illustrating the processes performed by the ECU (Electronic Control Unit) in the embodiment. The embodiments of this disclosure will be described in detail below with reference to the drawings. The same or corresponding parts in the drawings are denoted by the same reference numerals, and their descriptions will not be repeated. Figure 1 is a diagram illustrating the configuration of an electric vehicle according to an embodiment. Figure 2 is a diagram showing the layout of the circuit course on which this electric vehicle will run. Figures 1 and 2 will be referred to as appropriate below. Vehicle 10 is an electric vehicle, and in this example, it is a BEV (Battery Electric Vehicle) for use on a circuit course. The charging facility 20 is a rapid charging facility located in the pit 42 of the circuit course 40. The pit 42 is located in the pit lane 45. Vehicle 10 includes a battery 105, a current sensor 107, a voltage sensor 108, a temperature sensor 109, a cooling device 110, a PCU (Power Control Unit) 115, and an MG (Motor Generator) 120. Vehicle 10 further includes an inlet 130, a button 141, an HMI (Human Machine Interface) 142, a GPS (Global Positioning System) 144, a storage device 145, a communication device 150, and an ECU (Electric Control Unit) 160. Battery 105 is a lithium-ion battery and is an energy storage device that stores power for the vehicle 10 to run. Current sensor 107 detects the charge and discharge current of battery 105 and outputs the detected value. Voltage sensor 108 detects the voltage of battery 105. Temperature sensor 109 detects the temperature of battery 105. The cooling system 110 cools the battery 105 to prevent it from overheating while the vehicle 10 is running on the circuit course 40. The cooling system 110 operates to maintain the battery 105's temperature at a predetermined target temperature while the vehicle 10 is running. This target temperature is also referred to as the "first temperature." The first temperature is the optimal temperature for the battery 105 while the vehicle 10 is running. The PCU 115 converts the discharge power of the battery 105 into AC power and supplies it to the MG 120. The MG 120 receives AC power from the PCU 115 and generates the driving force for the vehicle 10. The inlet 130 receives power from the charging equipment 20. This power is DC power used for external charging of the vehicle 10. External charging involves charging the battery 105 using the power supplied. Button 141 receives a first user operation that instructs a temporary increase in the upper limit of the battery 105's output power when the vehicle 10 is driving through the activation zone 47, which is a predetermined zone on the circuit course 40. According to the first user operation, the upper limit of the vehicle 10's driving force is temporarily increased. The HMI 142 is a touchscreen that receives a second user input specifying the timing at which external charging will be performed on the circuit course 40. This timing is specified by the user, for example, when the vehicle 10 has completed n (≧2) laps of the circuit course 40, or when it has traveled x kilometers or y minutes from the current point in time. The GPS 144 acquires location information from artificial satellites indicating the current position (position coordinates) of the vehicle 10. The storage device 145 stores various types of data. This data includes the vehicle 10's driving history and a map representing the correspondence between the battery 105's OCV (Open Circuit Voltage) and SOC. The driving history shows the vehicle 10's driving pattern history, and specifically represents the history of the detected charge/discharge current of the battery 105 and the vehicle 10's location information and time when that detected value was output. The communication device 150 communicates with external equipment to the vehicle 10, such as the charging equipment 20 or the server 30. The ECU 160 is a control device that controls various components