Battery Protection Threshold Control for Safe Module Testing
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Solution Overview
Problem
Incorrect threshold value adjustments during battery system testing can lead to safety problems due to improper operation of protection functions, potentially damaging the battery system.
Innovation Solution
A battery control device and method that includes a storage device for safety limit ranges and threshold setting values, a communication device, and a controller to manage threshold changes within safety limits, notify of invalid changes, and switch operation modes to prevent unsafe adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If workers arbitrarily change threshold values during test operations, then testing flexibility is improved, but safety reliability deteriorates due to potential incorrect adjustments
Solution Approach 1:
The control device stores threshold values in advance and automatically applies them during testing. This preliminary preparation eliminates the need for workers to manually adjust thresholds during tests, ensuring safety while maintaining testing flexibility. The threshold values are pre-configured based on safety requirements and automatically retrieved during test operations.
Solution Approach 2:
The control device acts as an intermediary between the test device and the battery system. It receives test requests from the test device, automatically retrieves appropriate threshold values from storage, and applies them to control the battery system. This intermediary function prevents direct manual adjustment by workers while enabling flexible testing through automated threshold management.
2Ease of operation
If manual adjustment of threshold values is allowed, then ease of operation is improved, but manufacturing precision deteriorates due to incorrect threshold settings
Solution Approach 1:
The control device performs self-service by automatically retrieving and applying threshold values from its internal storage without requiring manual worker intervention. This self-service mechanism ensures precise threshold settings while simplifying operation, as the system autonomously manages threshold configuration based on test requirements.
Solution Approach 2:
The control device uses pre-stored copies of threshold values that have been previously determined to be correct. Instead of requiring workers to manually set each threshold, the system retrieves verified threshold copies from storage, ensuring consistent and accurate settings while maintaining ease of operation through automated retrieval.
3Adaptability or versatility
If threshold values are changed during testing, then adaptability is improved, but reliability deteriorates due to potential damage from incorrect changes
Solution Approach 1:
Multiple threshold values are stored in advance in the storage device, each corresponding to different test conditions or stages. During testing, the control device automatically retrieves the appropriate pre-stored threshold value based on current test requirements. This preliminary preparation enables threshold adaptability while ensuring reliability, as all threshold changes are based on pre-validated values rather than arbitrary manual adjustments.
Data Source
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AI summary
An embodiment of the present disclosure provides a battery control device of a battery system including at least one battery module, including: a storage device configured to store a safety limit range for a parameter related to a state of the at least one battery module and a threshold setting value for the parameter; a communication device configured to communicate with a test device; and a controller configured to operate a protection function of the battery system based on the threshold setting value, to change the threshold setting value based on a change value received from the test device if a change of the threshold setting value is requested, and to limit the change of the threshold setting value if the change value is out of the safety limit range.