Segmented Battery Communication for Lower-Complexity Cell Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing battery management communication systems are costly due to the need for numerous connections and voltage isolation components, which complicates the management of series-connected battery cells.
Innovation Solution
A battery management communication system that splits series-connected battery cells into groups, using segment communication units to facilitate communication between a control unit and battery charge controllers, reducing the complexity and number of connections through power line communication and separate communication lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If numerous connections and voltage isolation components are used in battery management communication systems, then communication reliability between control unit and battery cells is improved, but system cost and complexity increase
Solution Approach 1:
The battery cell array is divided into multiple segments, with each segment having its own communication unit. This segmentation reduces the complexity of individual communication paths while maintaining overall system reliability through distributed communication architecture.
Solution Approach 2:
The communication lines serve dual purposes: they carry both power signals and communication signals. This multi-functionality eliminates the need for separate dedicated communication lines, reducing the number of connections and components required.
2Reliability
If numerous connections and voltage isolation components are used in battery management communication systems, then communication reliability between control unit and battery cells is improved, but system cost increases
Solution Approach 1:
Power lines and communication lines are merged into a single communication infrastructure. The same physical lines that carry power between battery cells are also used for data communication, eliminating the need for separate communication wiring and reducing component count.
Solution Approach 2:
The communication lines serve dual purposes: they carry both power signals and communication signals. This multi-functionality eliminates the need for separate dedicated communication lines, reducing the number of connections and components required.
3Adaptability or versatility
If communication is conducted over long distances in series-connected battery cells, then system scalability is improved, but parasitic inductance and capacitance increase reducing signal quality
Solution Approach 1:
The battery system is divided into multiple segments with communication units distributed throughout. This segmentation breaks down long communication paths into shorter segments, reducing the cumulative parasitic inductance and capacitance while maintaining scalability through modular architecture.
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 configuration reduces parasitic inductance and capacitance, improves signal-to-noise ratio, allows for flexible construction, and increases data rates by reducing the effective resistance and attenuation between segments, thereby enhancing the management and control of battery cells.
Implementation Method 1
The first segment communication unit includes a first set of communication lines to communicate with said at least one battery charge controller of the first group, said first set of communication lines coupled, respectively, to a first-group-positive node and a first-group-negative node
Data Source
AI summary
A battery management communication system comprising:a control unit configured to receive information from each of a plurality of battery cells, and generate instructions to control the battery cells;a plurality of segment communication units comprising at least a first and a second segment communication unit;the first segment communication unit is configured to provide for communication between the control unit and a first cell group; andwherein the second segment communication unit is configured to provide for communication between the control unit and a second cell group; anda main communication unit configured to couple to the control unit and the plurality of segment communication units;wherein said information and instructions are routed through the main communication unit and appropriate segment communication unit.