Vehicle Power Relay Direct Transmission Mode
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Solution Overview
Problem
Existing vehicle charging systems cause repetitive discharging and charging of batteries when utilities are used during charging, leading to early battery deterioration due to continuous power supply from external sources.
Innovation Solution
A vehicle system that includes a controller capable of switching to a direct transmission mode, disconnecting the battery from the power line and allowing electric power to be transmitted directly from the electric power acquirer to the power supply unit, thereby isolating the battery and preventing repetitive charging and discharging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the battery is connected to the power line during charging and utilities are used, then the utilities can operate with electric power, but the battery undergoes repetitive discharging and charging cycles causing early deterioration
Solution Approach 1:
The patent segments the power transmission path by introducing a relay that can disconnect the battery from the power line. This creates separate power transmission paths: one through the relay (battery to power line) and another direct path (electric power acquirer to power supply unit), allowing independent control of battery connection during charging operations
Solution Approach 2:
The relay acts as an intermediary device between the battery and the power line. It mediates the power flow by switching between connected and disconnected states, enabling the system to select whether power flows through the battery or directly to the power supply unit based on operational conditions
2Reliability
If the relay disconnects the battery from the power line during charging, then battery deterioration is suppressed, but the power transmission path becomes more complex
Solution Approach 1:
The relay serves multiple functions: it acts as a switch for battery connection/disconnection, enables direct power transmission bypass, and provides control logic for selecting optimal power paths. This multi-functionality justifies the added component by consolidating control capabilities in a single device
Data Source
AI summary
A vehicle includes a battery, an electric power acquirer, a relay, a power supply unit, and a controller. The controller is able to switch a mode of electric power transmission to a direct transmission mode on the first condition that electric power is transmitted from the electric power acquirer to the battery and the power supply unit is in continuous operation or starts up. The direct transmission mode includes that the relay is in a disconnected state and electric power is transmitted from the electric power acquirer to the power supply unit.