Battery Management System Time-Division Communication Addressing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing battery management systems face limitations in expandability and energy efficiency due to restricted communication protocols and manual addressing methods, which hinder the effective management of multiple sensors and batteries.
Innovation Solution
A battery management system with a controller and sensors that utilize time-division communication and automatic addressing through button pressing or string voltage comparison, allowing for flexible sensor arrangement and reduced energy consumption, enabling better expandability and simplified setup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual addressing method is used, then user can arrange sensor addresses, but setting time increases and operation complexity increases
Solution Approach 1:
The sensor performs self-addressing by automatically comparing its string voltage with addressing commands from the controller. The sensor identifies its own address based on voltage thresholds without requiring manual configuration, thereby reducing setting time while maintaining arrangement flexibility.
Solution Approach 2:
The patent replaces manual mechanical button pressing with automatic electronic voltage comparison. The string voltage measuring circuit automatically compares voltage levels with addressing commands to determine sensor addresses, eliminating the need for manual mechanical operation and reducing configuration time.
2Speed
If sensors communicate simultaneously, then communication speed increases, but energy consumption increases
Solution Approach 1:
The controller transmits addressing commands and receives sensor data in periodic time-division slots. Each sensor communicates only during its assigned time slot, controlled by communication period signals, which reduces simultaneous communication and energy consumption while maintaining systematic communication speed.
3Quantity of substance
If number of sensors increases, then system capability increases, but controller energy requirement increases
Solution Approach 1:
The system implements time-division multiplexing where sensors are grouped and communicate in alternating time slots. The controller only needs to handle one group at a time, reducing peak energy requirements. This allows more sensors to be connected without exceeding the controller's maximum working energy capacity.
Solution Approach 2:
Sensors are divided into multiple groups that communicate at different time intervals. This segmentation distributes the communication load over time, preventing any single moment from requiring excessive energy from the controller, thereby enabling support for a larger total number of sensors.
4Measurement precision
If manual addressing is used, then addressing accuracy can be ensured, but operation complexity increases
Solution Approach 1:
The patent replaces manual button pressing with automatic voltage comparison. The string voltage measuring circuit automatically compares voltage levels with addressing commands to determine sensor addresses, eliminating complex manual operations while ensuring accurate addressing through precise voltage threshold comparison.
Data Source
AI summary
A battery management system having capability for addressing and time-division communication, the battery management system comprises a controller and a plurality of sensors, the sensors can communicatively connect to the controller; wherein each sensor has a communication port, the controller can transmit a plurality of addressing commands to address each of the sensors, each of the sensors can control the communication period of each communication port in accordance with its received addressing command, therefore the sensors and the controller can execute the time-division communication.