Power Generation Voltage Control During Battery Communication Loss
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Solution Overview
Problem
In power systems, when a communication abnormality occurs with a battery, existing technologies face challenges in safely and continuously using the battery without immediately disconnecting it from the system, especially when necessary information is not directly available.
Innovation Solution
A power system comprising a battery device, a power generation device, and a control device that controls the power generation voltage based on acquired information, using the output voltage of a DCDC converter to ensure safe and continuous battery usage even during communication abnormalities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery is electrically disconnected from the system when communication abnormality is detected, then safety is ensured, but necessary safety control cannot be performed when the battery is needed
Solution Approach 1:
The control device acts as an intermediary between the battery device and the power generation device. When communication with the battery device is abnormal, the control device uses the output voltage from the power generation device as a substitute signal to control power generation voltage, thereby maintaining safety control capability without disconnecting the battery.
Solution Approach 2:
When the battery voltage information cannot be obtained due to communication abnormality, the system uses the output voltage of the power generation device as a copy or substitute signal to represent the battery state, enabling continued control functionality.
2Reliability
If the battery is immediately disconnected upon detecting communication abnormality, then system safety is protected, but continuous battery usage is compromised
Solution Approach 1:
The control device continuously monitors the output voltage of the power generation device and uses this feedback to adjust the power generation voltage. This closed-loop control enables the system to maintain safety while continuing to use the battery even when direct battery communication is abnormal.
Solution Approach 2:
The system prepares alternative control methods in advance. When communication abnormality is detected, the control device already has the power generation output voltage as a backup signal ready to use, avoiding immediate disconnection and enabling continuous battery operation.
3Measurement precision
If direct battery information is required for control, then control precision is maintained, but system robustness to communication failures decreases
Solution Approach 1:
The power generation output voltage serves as an intermediary signal that indirectly reflects the battery state. This intermediary approach maintains control functionality and system robustness when direct battery communication fails, even though the measurement is not as direct.
Data Source
AI summary
A power system includes a battery device that outputs information related to a battery, a power generation device that supplies power to the battery device, and a control device that controls power generation voltage of the power generation device based on the information acquired from the battery device. The control device controls, when the information is not acquirable from the battery device, power generation voltage of the power generation device based on the output voltage that is voltage on an output end side of the power generator.