Battery Control System Communication Range Extension
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Solution Overview
Problem
Existing battery control systems face challenges in maintaining communication reliability and reducing power consumption while increasing the communication range between cell controllers and battery controllers, due to limitations in wireless communication range and interference.
Innovation Solution
The battery control system employs a battery controller that sends a non-modulated wave with a reduced power level, allowing the cell controller to generate a response signal through amplitude modulation, eliminating the need for the cell controller to generate carrier waves and minimizing signal interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the cell controller is configured as an active-type wireless terminal to increase communication range, then the communication range is improved, but the power consumption of the cell controller increases
Solution Approach 1:
The patent introduces a non-modulated wave as an intermediary carrier signal transmitted by the battery controller. The cell controller modulates this intermediary wave to create response signals, eliminating the need for the cell controller to generate its own carrier waves. This mediator approach enables passive-type terminals to communicate over extended ranges without the power burden of carrier generation.
Solution Approach 2:
The battery controller provides the carrier wave resource to the cell controller, allowing the cell controller to focus solely on modulation and response generation. This self-service arrangement where the active controller supports the passive controller enables the passive terminal to achieve extended communication capability without consuming power for carrier generation.
2Length of stationary object
If the signal level of the non-modulated wave is sufficiently increased to increase communication range, then the communication range is improved, but the sneak signal reduces receive sensitivity
Solution Approach 1:
The patent implements dynamic signal level adjustment where the battery controller transmits the non-modulated wave at an optimized power level that balances communication range and receive sensitivity. The system dynamically adapts the signal characteristics to maintain optimal performance across varying communication conditions without causing sneak signal interference.
Solution Approach 2:
The patent changes the power level parameter of the non-modulated wave to an optimal value that prevents sneak signal effects while maintaining sufficient communication range. By adjusting this physical parameter, the system achieves the desired balance between extended range and preserved receive sensitivity at the cell controller.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach effectively suppresses power consumption in the cell controller, maintains communication range, and enhances reliability by reducing sneak signal influence, suitable for longer distances and varying communication environments.
Implementation Method 1
the cell controller generates a response signal by performing amplitude modulation to the non-modulated wave
Data Source
AI summary
The purpose of the present invention is to provide a battery control system which enables extending the communication range between a cell controller and a battery controller while keeping power consumption in the cell controller low and which is capable of ensuring communication reliability. In this battery control system, after transmitting a response request to the cell controller, the battery controller transmits to the cell controller a non-modulated wave having a power level lower than that of the response request, and the cell controller generates a response signal by performing amplitude-modulation on the non-modulated wave (see FIG. 6).