Relay Drive Control with Cost-Effective Voltage Conversion
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Summary
Problems
Existing relay drive control systems require additional components like temperature sensors and multiple switches, leading to increased cost and size, which is not efficiently managed in current power storage systems.
Innovation solutions
A relay drive control device that uses a voltage converter to increase the output voltage from a battery to a drivable voltage level, allowing the relay to be driven without additional sensors, and adjusts the voltage based on temperature and timing to ensure reliable operation within a predetermined temperature range.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If a temperature sensor and multiple switches are added to dynamically control relay drive voltage, then the relay can be driven appropriately under various conditions, but the cost and scale (size and weight) of the power storage system increase
Why choose this principle:
The patent extracts the temperature sensing function from a dedicated temperature sensor by using the existing voltage converter and controller to derive temperature information from voltage characteristics. This eliminates the need for separate temperature sensors while maintaining the ability to compensate for temperature effects on relay drive voltage.
Principle concept:
If a temperature sensor and multiple switches are added to dynamically control relay drive voltage, then the relay can be driven appropriately under various conditions, but the cost and scale (size and weight) of the power storage system increase
Why choose this principle:
The voltage converter is given multiple functions: it not only converts battery voltage to appropriate levels for various loads but also serves as a temperature sensing device and relay drive controller. This multi-functionality reduces the overall component count and system complexity while achieving reliable relay operation across temperature ranges.
Application Domain
Data Source
AI summary:
A relay drive control device that uses a voltage converter to increase the output voltage from a battery to a drivable voltage level, allowing the relay to be driven without additional sensors, and adjusts the voltage based on temperature and timing to ensure reliable operation within a predetermined temperature range.
Abstract
A relay drive control device is configured to control drive of a relay for connecting a battery mounted on a vehicle and an external power supply. The relay drive control device includes a controller configured to, when driving the relay, supply an output voltage of the battery to the relay after increasing the output voltage to a voltage value at which the relay is drivable.