Wireless Battery Management with Detachable EIS Modules
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Solution Overview
Problem
Existing battery management systems for battery packs, particularly in electric vehicles, face challenges in manufacturing complexity, power efficiency, and space efficiency due to wired connections between components, which also hinder maintenance convenience.
Innovation Solution
A wireless battery management system with detachable electrochemical impedance spectroscopy (EIS) modules and battery management units (BMUs) that communicate wirelessly, simplifying manufacturing, reducing weight and size, and enhancing maintenance flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wired connections are used between battery management components, then system reliability and signal stability are improved, but manufacturing complexity and device weight increase
Solution Approach 1:
The patent replaces wired mechanical connections with wireless communication technology. The battery management module and EIS module communicate through wireless signals (e.g., Bluetooth, Wi-Fi, or other wireless protocols) instead of physical wires, thereby eliminating the need for complex wiring harnesses, connection terminals, and associated mounting structures while maintaining system reliability through robust wireless communication protocols
2Reliability
If wired connections are used between battery management components, then signal stability is improved, but power efficiency deteriorates due to continuous power consumption for maintaining connections
Solution Approach 1:
The wireless communication system operates in periodic cycles rather than continuously. The battery management module and EIS module establish wireless connections only when data transmission is needed (e.g., during EIS measurements or status reporting), then enter low-power sleep modes between communications. This periodic operation maintains signal stability when active while dramatically reducing average power consumption compared to continuously powered wired connections
3Reliability
If wired connections are used between battery management components, then connection stability is improved, but space efficiency and maintenance convenience deteriorate
Solution Approach 1:
The patent extracts and removes all physical wiring, connection terminals, and associated structural components from the battery pack. By eliminating these elements entirely and replacing them with wireless communication, the patent frees up significant space within the battery pack enclosure, reduces overall device weight, and simplifies the structural design while maintaining connection stability through reliable wireless protocols
4Reliability
If wired connections are used between battery management components, then system integrity is improved, but ease of repair and component replacement deteriorate
Solution Approach 1:
The patent divides the battery management system into independent, modular wireless units (battery management module and EIS module) that communicate wirelessly. This segmentation allows each module to be independently replaced or repaired without affecting the other components or requiring complex disconnection of wiring harnesses. A faulty module can be simply removed and replaced with a new one, and the wireless connection will automatically re-establish, greatly simplifying maintenance while maintaining system integrity
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
The wireless system simplifies manufacturing, reduces costs, improves power and space efficiency, and enhances maintenance convenience by eliminating wires, allowing for easy detection and replacement of faulty components.
Implementation Method 1
a plurality of wireless electrochemical impedance spectroscopy (EIS) modules, each wireless EIS module coupled to a respective one of a plurality of battery modules and configured to generate EIS measurement results by measuring EIS of the respective one of the plurality of battery modules
Data Source
AI summary
Wireless battery management systems, battery packs, and apparatuses comprising the battery packs are disclosed. In an embodiment, a wireless battery management system may include a plurality of wireless electrochemical impedance spectroscopy (EIS) modules configured to connect to a respective battery module of a plurality of battery modules included in a battery pack and measure EIS of the respective battery module; and a first wireless battery management module configured to communicatively couple wirelessly with the plurality of wireless EIS modules, receive EIS measurement results wirelessly from the plurality of wireless EIS modules, and integrally manage the plurality of battery modules based on the received EIS measurement results.