Vehicle Idling Stop Control via Battery Type Thresholds
Solution Overview
Problem
Current idling stop function control systems uniformly inhibit or permit the idling stop function based on battery type without considering the battery's condition, leading to inefficient fuel consumption or shortened battery life.
Innovation Solution
A vehicle control system and method that measures battery characteristics to determine if it is a designated or non-designated battery, setting different threshold values for allowing or inhibiting the idling stop function, ensuring appropriate execution based on the battery type.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the idling stop function is uniformly inhibited when a non-designated battery is detected, then battery lifetime is protected, but fuel consumption cannot be reduced
Solution Approach 1:
The system changes the threshold parameter for idling stop permission based on battery type. For non-designated batteries, a more stringent threshold is applied, allowing idling stop only when battery characteristics (voltage, temperature, charge state) fall within a narrower safe range. This enables fuel savings while protecting battery lifetime by adapting the operational threshold to the battery's capabilities.
2Loss of energy
If the idling stop function is permitted for non-designated batteries, then fuel consumption is reduced, but battery lifetime is shortened
Solution Approach 1:
The control system adjusts the threshold parameters dynamically based on detected battery characteristics. When a non-designated battery is detected, the system sets more conservative threshold values for voltage, temperature, and charge state that define the safe operating window for idling stop. This allows the function to execute under controlled conditions that reduce fuel consumption while preventing battery degradation.
3Measurement precision
If different threshold values are set for designated and non-designated batteries, then control precision is improved, but system complexity increases
Solution Approach 1:
The system applies different control parameters (threshold values) locally based on the detected battery type. Instead of a uniform control strategy, the ECU switches between different threshold sets tailored to designated or non-designated batteries. This local differentiation improves control precision for each battery type while managing complexity through standardized threshold configurations stored in the control unit.
Data Source
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AI summary
A control system of a vehicle includes an electronic control unit. The electronic control unit is configured to (a) measure characteristics of a battery installed on the vehicle, (b) determine whether the battery is a designated battery or a non-designated battery, based on at least one of the characteristics, and (c) determine whether an idling stop function of the vehicle is permitted to be executed, based on a threshold value of at least one of the characteristics of the battery. The threshold value is set to a first threshold value when the battery is determined as the designated battery, and set to a second threshold value that is different from the first threshold value when the battery is determined as the non-designated battery.