Vehicle Power Control Apparatus Jump Start Logic
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Solution Overview
Problem
During a jump start using an external power source with a higher voltage than the vehicle's battery, the electric power generation device may experience abnormal current flow, leading to potential damage, and after the engine starts, the removal of the external power source can cause a voltage decrease, resulting in engine stall.
Innovation Solution
An electric power control apparatus with a first determination section to activate jump start, a second to verify the connection of the external power source, a third to determine the engine's start completion, a keep section to deactivate the electric power generation unit, and a fourth to detect the disconnection of the external power source, ensuring immediate start of the electric power generation when the external power is disconnected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electric power generation device is activated during jump start with external power source, then the engine can be started, but abnormal current flows causing damage to the electric power generation device
Solution Approach 1:
The control device determines the connection status of the external power source before activating the electric power generation device. By checking whether external power is connected and suppressing activation during such conditions, the system prevents abnormal current flow while ensuring reliable engine starting through proper timing of power generation activation.
2Ease of operation
If the external power source is removed after engine start, then the jump start procedure is completed, but the battery voltage decreases causing engine stall
Solution Approach 1:
The control device continuously monitors the connection status of the external power source and the operating state of the engine. When the external power source is disconnected after engine start, the control device detects this change and immediately activates the electric power generation device to maintain battery voltage and prevent engine stall, ensuring continuous stable operation.
3Device complexity
If the electric power generation device is kept deactivated after engine start, then the system remains simple, but voltage decrease occurs when external power is disconnected
Solution Approach 1:
The control device is pre-programmed with the logic to detect external power disconnection and immediately activate power generation. This preliminary setup of control logic allows the system to respond automatically to voltage changes without adding complex hardware, maintaining simplicity while ensuring voltage stability through timely activation of the electric power generation device.
Data Source
AI summary
An electric power control apparatus for a vehicle includes a first determination section determining an activation of a jump start, a second determination section determining a connection of an external power source having a higher voltage than a battery voltage of the vehicle, a third determination section determining whether the engine switches to an engine start completed state, a keep section keeping an electric power generation unit of the vehicle in an electric power generation deactivated state when determining that the engine switches to the engine start completed state, a fourth determination section determining a disconnection of the external power source, and an instruction section instructing an immediate activation of the electric power generation to the electric power generation unit when determining the disconnection of the external power source.