BMS Temperature Channel Switching for MCU and Application Sensing
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Solution Overview
Problem
The limited number of temperature channels in a microcontroller is inefficiently utilized, as one channel is dedicated solely for boot mode (software update) while others remain unused in application mode, affecting channel utilization and accurate temperature measurement.
Innovation Solution
A battery management device with complementary switches for two temperature measurement units allows simultaneous operation in both boot and application modes, sharing a single channel by controlling the switches differently based on mode, ensuring accurate temperature measurement without channel waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a dedicated temperature sensing channel is allocated for MCU temperature measurement during software update, then temperature measurement accuracy is improved, but channel utilization deteriorates
Solution Approach 1:
The temperature sensing channel is configured to serve dual purposes: during boot mode it measures MCU temperature through the temperature sensing device, and during application mode it measures application device temperature. The microcontroller dynamically switches the channel's measurement target based on operational mode, making the channel universal and eliminating waste while maintaining measurement accuracy for each specific function.
2Productivity
If multiple temperature channels are allocated for simultaneous measurement in boot and application modes, then measurement capability is improved, but device complexity increases
Solution Approach 1:
The system dynamically configures the temperature channel's measurement target based on operational mode. During boot mode, the channel measures MCU temperature; during application mode, it measures application device temperature. This dynamic switching allows a single channel to perform multiple measurement functions without requiring parallel dedicated channels, thereby improving measurement capability while avoiding increased device complexity.
Data Source
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AI summary
The present invention relates to a temperature measurement device of a microcontroller of BMS and a method therefor, and is an invention that enables accurate temperature measurement of a microcontroller while facilitating channel utilization by connecting a temperature measurement device for a microcontroller and a temperature measurement device for an application to one channel of the microcontroller.