18654209. CONTROL APPARATUS FOR ELECTRIC VEHICLES simplified abstract (DENSO CORPORATION)
Contents
CONTROL APPARATUS FOR ELECTRIC VEHICLES
Organization Name
Inventor(s)
Taroh Shimosaka of Kariya-city (JP)
Satoshi Yasuda of Nagagute-shi (JP)
CONTROL APPARATUS FOR ELECTRIC VEHICLES - A simplified explanation of the abstract
This abstract first appeared for US patent application 18654209 titled 'CONTROL APPARATUS FOR ELECTRIC VEHICLES
Simplified Explanation: The patent application describes a system where a second control unit takes over the switching control task of an upper-arm switching device in a voltage converter when the first control unit fails. The second control unit monitors the terminal voltage across a smoothing capacitor and activates a limp-home control task for an electric vehicle if the voltage falls below a certain threshold.
- The second control unit switches between an on state and an off state of the upper-arm switching device.
- It monitors the terminal voltage across the smoothing capacitor to ensure it does not fall below a specific threshold.
- If the voltage drops below the threshold, the second control unit activates a limp-home control task for the electric vehicle.
- This system ensures the electric vehicle can still operate safely even if the primary control unit fails.
- The innovation provides a backup mechanism for critical control tasks in electric vehicles.
Potential Applications: 1. Electric vehicle systems 2. Voltage converters 3. Power management systems
Problems Solved: 1. Ensures continuous operation of electric vehicles in case of control unit failure 2. Prevents damage to the vehicle's electrical system during failures
Benefits: 1. Increased safety and reliability of electric vehicles 2. Reduces the risk of system failures impacting vehicle performance
Commercial Applications: Electric vehicle manufacturers can integrate this technology into their vehicles to enhance safety and reliability. It can also be used in other power management systems where backup control mechanisms are necessary.
Questions about the Technology: 1. How does the second control unit determine when to activate the limp-home control task? 2. What are the potential implications of this technology on the electric vehicle industry?
Frequently Updated Research: Researchers are continually exploring new ways to improve the efficiency and reliability of electric vehicle systems, including backup control mechanisms like the one described in this patent application.
Original Abstract Submitted
A second control unit performs a switching control task of repeatedly switching between an on state and an off state of an upper-arm switching device of a voltage converter in response to determination that a monitored terminal voltage across a smoothing capacitor is not lower than or equal to an anomaly determination threshold during failure of a first control unit. The second control unit determines whether the switching control task causes the monitored terminal voltage across the smoothing capacitor to be lower than or equal to the anomaly determination threshold. The second control unit controls, in response to determination that the switching control task causes the monitored terminal voltage across the smoothing capacitor to be lower than or equal to the anomaly determination threshold, at least one motor-generator to perform a limp-home control task of the electric vehicle.
