Automated Communication ID Allocation for Battery Management Systems
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Summary
Problems
Existing methods for allocating communication IDs between master and slave battery management systems (BMS) in electric vehicles are either skill-dependent and time-consuming or require additional circuits, leading to inefficiencies and potential errors.
Innovation solutions
A method and system that automatically allocate communication IDs based on current amounts applied through a power line, using shunt resistors and a communication ID allocating table, allowing slave BMSs to calculate and assign IDs without additional devices, thereby simplifying the process and reducing time and cost.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If manual allocation method is used, then communication ID can be allocated, but time consumption increases and human error occurs
Why choose this principle:
The slave BMS automatically determines its own communication ID by measuring the current flowing through the power line and using a lookup table, eliminating the need for manual allocation by expert engineers and thereby reducing both time consumption and human error
Principle concept:
If manual allocation method is used, then communication ID can be allocated, but time consumption increases and human error occurs
Why choose this principle:
The patent replaces the manual mechanical process of ID allocation with an automated electrical measurement system that uses current sensing and pre-stored allocation tables to automatically assign communication IDs
Application Domain
Data Source
AI summary:
A method and system that automatically allocate communication IDs based on current amounts applied through a power line, using shunt resistors and a communication ID allocating table, allowing slave BMSs to calculate and assign IDs without additional devices, thereby simplifying the process and reducing time and cost.
Abstract
A method for assigning communication IDs and a system for allocating communication IDs includes a plurality of slave battery management systems (BMSs) sequentially connected to a power line for supplying power, and allocating predetermined communication IDs based on a first current amount applied through the power line, at least one of the slave BMSs outputs a second current amount that is the first current amount minus a consumed current amount for driving through the power line, and the first current amount corresponds to a summation value of a consumed current amount of the slave BMS receiving the first current amount and a consumed current amount of at least one posterior slave BMS sequentially connected to the slave BMS receiving the first current amount.