Wireless Battery Array Tracker for SOH Data Access and Reuse
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Solution Overview
Problem
The service and asset management of high voltage battery arrays in electrified vehicles face challenges due to the difficulty in accessing reliable state of health (SOH) data, which affects their value and recyclability, and existing sensing modules are not easily adaptable for second-life applications.
Innovation Solution
A wireless cell array tracker with a daisy chain connector and processor is integrated into the battery array, allowing for wireless transmission of SOH data, voltage, and capacity information, enabling cloud connectivity and storage, and providing geolocation and local access capabilities, thus extending the useful life of the battery pack and facilitating asset management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a battery sensing module is integrated into the battery array to measure cell data, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The wireless array tracker is nested within the battery array structure, with the processor and transceiver integrated into the existing battery management architecture. The daisy chain connector allows multiple sensing modules to be nested in series along the battery array, enabling comprehensive monitoring without proportionally increasing overall system complexity
Solution Approach 2:
The battery sensing module serves multiple functions: measuring cell voltage, confirming sensor operation, applying ohmic load for balancing, and providing data for both real-time monitoring and long-term health assessment. This multi-functionality reduces the need for separate dedicated components for each function
2Loss of information
If a wireless transmission system is added to the battery array to enable cloud connectivity, then loss of information is reduced, but device complexity increases
Solution Approach 1:
The transceiver acts as an intermediary component that bridges the battery array and external cloud systems. It receives data from the processor via the daisy chain connector and handles all wireless communication protocols, shielding the complex battery management system from direct integration with cloud infrastructure
Solution Approach 2:
The system performs preliminary data processing and validation at the battery array level before transmission. The processor prepares and validates data packets locally, ensuring data integrity before wireless transmission, which reduces the need for complex error handling and retransmission protocols
3Ease of manufacture
If existing battery sensing modules are used without modification, then ease of manufacture is improved, but adaptability for second-life applications deteriorates
Solution Approach 1:
The battery array system is segmented into modular components: the daisy chain connector, the processor, and the transceiver. This segmentation allows the wireless tracking functionality to be added as a separate module that can be easily integrated into existing battery arrays during manufacturing, while also being independently replaceable or reconfigurable for second-life applications
Solution Approach 2:
The system incorporates dynamic configuration capabilities where the daisy chain connector can be selectively engaged or disengaged, and the transceiver can be activated or deactivated based on whether the battery array is in its original application or has been repurposed for second-life use. This dynamic adaptability allows the same hardware to serve multiple purposes
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 solution enables comprehensive data collection and storage, enhancing the economic value and recyclability of battery arrays by providing real-time health monitoring and location-based decision-making, supporting second-life applications and reducing environmental impacts.
Implementation Method 1
transmits the voltage data via the transceiver
Implementation Method 2
The processor retrieves voltage data from the battery sensing module via the daisy chain connector
Data Source
AI summary
A wireless cell array tracker includes a daisy chain connecter and processor each supported on a circuit substrate. The circuit substrate is attached to a battery array. The daisy chain connector physically interfaces with a battery sensing module of the battery array. The processor retrieves data from the battery sensing module via the daisy chain connector, and commands wireless transmission of the data.