Wireless Battery Management BLE Handshake for Fast Vehicle Startup
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Solution Overview
Problem
Current battery management systems for vehicles require complex wired connections, leading to increased production costs and reduced flexibility in battery pack design, with conventional wireless connection methods failing to meet the requirement of rapid data transmission and reception after vehicle startup.
Innovation Solution
A wireless battery management system using Bluetooth Low Energy (BLE) technology, where the master device and slave devices act as both advertisers and scanners, simplifying the connection procedure by modifying message formats and allocating radio resources to reduce connection time and improve reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wired connection method is used for battery management system, then connection reliability is ensured, but production cost increases and design flexibility is reduced
Solution Approach 1:
The patent replaces the mechanical wired connection system with a wireless communication system using Bluetooth Low Energy (BLE) technology. The battery management system uses wireless communication modules to transmit data between the battery control unit and the vehicle control unit, eliminating the need for physical cable connections while maintaining communication reliability.
2Adaptability or versatility
If conventional wireless connection procedure is used, then connection flexibility is improved, but connection time increases
Solution Approach 1:
The patent implements a connection procedure where the battery control unit and vehicle control unit perform preliminary actions before actual data transmission. The battery control unit continuously maintains a connected state or pre-establishes communication parameters, so that when data needs to be transmitted, the connection is already ready, significantly reducing the actual connection time.
Solution Approach 2:
The patent employs dynamic connection management where the battery control unit can switch between different connection states (connected, connecting, disconnected) based on real-time requirements. The system dynamically adjusts communication parameters and re-establishes connections as needed, providing both flexibility and rapid reconnection capability.
Data Source
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AI summary
In order to achieve the purpose and benefits of the present invention, a wireless battery management system for a vehicle according to embodiments of the present invention includes: one or more cell module control (CMC) units respectively including wireless communication modules; and a battery master control (BMC) unit which is wirelessly connected to the wireless communication modules of the one or more cell module control units and manages the one or more cell module control units, wherein the battery master control unit transmits advertisement data set for the one or more cell module control units, the one or more cell module control units transmit scan request data to the battery master control unit in response to the set advertisement data, the battery master control unit transmits scan response data to the one or more cell module control units in response to the scan request data, and the set advertisement data includes wireless resource allocation information for transmitting the next advertisement data.