Battery Module BLE Grouping to Prevent Packet Collisions
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Solution Overview
Problem
In wireless communication systems for storage battery modules, existing technologies face challenges such as packet collisions, delayed connection establishment, and reduced reliability due to simultaneous transmissions from multiple modules, leading to inefficiencies in monitoring battery health and safety.
Innovation Solution
Implementing a communication protocol that divides storage battery modules into groups managed by different battery management units, using Bluetooth Low Energy (BLE) with randomized advertisement intervals and infrared activation, to prevent packet collisions and ensure timely connection establishment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple storage battery modules transmit advertisement packets simultaneously using BLE, then the management apparatus can discover all modules, but packet collisions occur and connection establishment is delayed
Solution Approach 1:
The patent segments the advertisement transmission process by assigning different advertisement channels to different storage battery modules. Instead of all modules transmitting on the same three advertisement channels simultaneously, modules are divided into groups that use different channels, thereby reducing packet collisions and improving connection establishment reliability and speed.
Solution Approach 2:
The patent implements dynamic channel selection where storage battery modules can switch between advertisement channels based on transmission conditions and collision detection. This dynamic adaptation allows the system to optimize connection establishment by moving transmissions to less congested channels when collisions are detected.
2Productivity
If the management apparatus uses multiple wireless communication modules to manage hundreds of storage battery modules, then connection capacity increases, but the time to establish all connections increases due to concentrated advertisement packets
Solution Approach 1:
The patent segments the large group of storage battery modules into smaller subgroups that can be managed concurrently by different wireless communication modules in the management apparatus. Each module manages a specific subset of storage battery modules using dedicated advertisement channels, enabling parallel connection establishment and improving overall productivity.
Solution Approach 2:
The patent utilizes the channel dimension in the wireless communication spectrum to increase management capacity. By assigning different advertisement channels to different management modules and their corresponding storage battery modules, the system creates additional parallel communication paths, effectively adding a dimensional layer to the connection establishment process.
3Adaptability or versatility
If advertisement packets are transmitted on the three advertisement channels, then BLE communication protocol is followed, but packet collisions cancel transmissions and lose connection opportunities
Solution Approach 1:
The patent implements dynamic channel assignment and switching mechanisms that allow storage battery modules to adaptively select advertisement channels based on current transmission conditions. When packet collisions are detected on a particular channel, the system dynamically switches to alternative channels, maintaining BLE protocol compliance while improving transmission reliability.
Solution Approach 2:
The patent changes the channel parameter in the advertisement packet transmission process. Instead of using fixed channels for all modules, the system varies the channel parameter across different modules and adjusts it dynamically based on collision detection, thereby reducing packet collisions while maintaining protocol compatibility.
Data Source
AI summary
According to one embodiment, a storage battery apparatus comprising: a plurality of storage battery modules, each of which includes a battery module and a first wireless communication module transmitting and receiving a radio wave based on a BLE standard; and a battery management unit which includes a plurality of second wireless communication modules transmitting and receiving a radio wave based on the BLE standard, and an arithmetic processing apparatus controlling operation of the second wireless communication modules, wherein the arithmetic processing apparatus establishes communication between the battery management unit and the storage battery modules in unit of groups each including at least one of the storage battery modules.