Battery Management System Sequential Data Acquisition
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Solution Overview
Problem
Current battery management systems require complex and resource-intensive arrangements for connecting components and detecting hazardous connections between battery units and their enclosures, such as in electric vehicles, which can be costly and inefficient.
Innovation Solution
A battery management system that uses a computing device with a data request port and input data port to communicate with battery unit monitoring modules, which transmit data sequentially, eliminating the need for dedicated addressing ports and allowing for efficient monitoring of battery units' voltage and temperature, and detecting error conditions like high voltage, low voltage, or connection faults.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current battery management systems use dedicated addressing ports and complex connection arrangements for each battery unit, then data can be obtained from individual battery units, but the system requires significant resources and complex arrangements for connecting components
Solution Approach 1:
Multiple battery unit monitoring modules share a single communication bus and use sequential data requests instead of dedicated addressing ports. The system combines multiple data acquisition functions into a unified communication protocol where modules respond in sequence to a single data request signal, eliminating the need for individual addressing infrastructure.
Solution Approach 2:
The communication bus serves multiple functions: it provides addressing through sequential signaling, data transmission for multiple battery units, and system-wide coordination. A single data request port on the controller manages all monitoring modules universally rather than requiring dedicated ports for each unit.
2Reliability
If current battery management systems implement comprehensive monitoring of battery units, then safety and performance can be maintained, but complex and expensive systems are required for detecting hazardous connections
Solution Approach 1:
Each battery unit monitoring module autonomously monitors its connected battery unit and self-identifies through sequential response to data requests. The system uses the existing operational communication infrastructure to detect hazardous conditions rather than requiring separate dedicated detection systems, making the monitoring function self-sufficient.
Solution Approach 2:
The sequential data request protocol acts as an intermediary mechanism that enables both data acquisition and hazard detection through the same communication bus. By analyzing response patterns, timing, and data validity from each monitoring module, the system detects connection faults and hazardous conditions without requiring additional specialized detection hardware.
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 system simplifies data collection and error detection, reducing resource requirements and costs while ensuring safe and consistent operation of battery packs in electric vehicles by using fewer ports and eliminating the need for complex addressing systems, thereby maintaining efficient battery management.
Implementation Method 1
The first battery unit monitoring module can include an analog-to-digital converter. The analog-to-digital converter can measure a voltage of the first battery unit.
Implementation Method 2
The first battery unit monitoring module can include a temperature monitoring device that measures a temperature of the first battery unit. The temperature can be expressed as a voltage which is applied to an input of the analog-to-digital converter.
Data Source
AI summary
The present application describes, among other things, a battery management system. The battery management system includes a computing device and first and second battery unit monitoring modules. The computing device includes an output data request port and an input data port. Each battery unit monitoring module is connected in parallel to the input data port of the computing device. In response to a data request from the output data request port of the computing device, the first battery unit monitoring module transmits data of the first battery unit to the input data port of the computing device, and transmits a data request to the second battery unit monitoring module. In response to the data request from the first battery unit monitoring module, the second battery unit monitoring module transmits data of the second battery unit to the input data port of the computing device.