Battery Pack Fault Localization Using Wireless Angle-of-Arrival
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Solution Overview
Problem
Locating faulty battery pack components in complex battery structures of electronic devices, such as electric vehicles, is challenging and often requires tedious and expensive trial-and-error disassembly techniques.
Innovation Solution
A battery pack controller determines the specific locations of battery devices within a battery pack using wireless signals by measuring angles of arrival and signal strengths, allowing for quick identification of faulty components without disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If trial-and-error methods are used to locate faulty battery components, then identification can be achieved, but the process becomes tedious and expensive
Solution Approach 1:
The system performs preliminary actions by pre-establishing a mapping between battery device identifiers and their physical locations within the battery pack. Before fault detection occurs, the controller already has a database correlating each battery device's unique identifier with its specific position, enabling immediate location identification when a fault is detected, eliminating the need for time-consuming disassembly and trial-and-error methods
Solution Approach 2:
The patent replaces mechanical disassembly methods with electronic identification systems. Instead of physically opening and inspecting battery components, the system uses wireless communication to receive signals from battery devices, extract their identifiers, and automatically determine locations through electronic database lookup, substituting mechanical trial-and-error with automated electronic detection and information retrieval
2Quantity of substance
If complex battery structures are used to increase energy capacity, then energy storage is improved, but locating faulty components becomes more challenging
Solution Approach 1:
The battery pack is segmented into multiple battery devices, each with its own unique identifier. The controller maintains a segmented database where each identifier maps to a specific physical location within the battery pack structure. This segmentation allows the system to handle complex multi-component battery structures by treating each device as an independently identifiable unit, making fault location straightforward through identifier-based lookup regardless of the overall complexity of the battery assembly
Solution Approach 2:
The controller acts as an intermediary between battery devices and the fault detection system. It receives wireless signals from battery devices, extracts their unique identifiers, and uses these identifiers to query a location database. This intermediary role simplifies the detection process by translating physical battery device positions into searchable digital identifiers, making faulty component location easy even in complex battery structures with many components
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
Enables rapid and cost-effective localization of faulty battery components by eliminating the need for trial-and-error methods, providing precise location information for efficient repair.
Implementation Method 1
receive a first wireless signal; receive a second wireless signal
Implementation Method 2
determine a first angle of arrival for the first wireless signal and a second angle of arrival for the second wireless signal
Implementation Method 3
determine a first signal strength of the first wireless signal and a second signal strength of the second wireless signal
Data Source
AI summary
An electronic device comprises a processor and storage coupled to the processor. The storage includes executable code, which, when executed by the processor, causes the processor to: receive a first wireless signal; receive a second wireless signal; determine a first angle of arrival for the first wireless signal and a second angle of arrival for the second wireless signal; determine a first signal strength of the first wireless signal and a second signal strength of the second wireless signal; and based on the first and second angles of arrival and the first and second signal strengths, determine a location within a battery pack of a first battery device of the battery pack relative to a location of a second battery device of the battery pack.