Battery Case Communication Layout for Reliable Module Monitoring
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Solution Overview
Problem
Existing battery management systems face challenges in efficiently monitoring and managing multiple battery modules due to the limitations of intricate wiring and interference issues in wireless communication within battery cases.
Innovation Solution
A battery case design that combines wired and wireless communication methods, utilizing antenna modules and transverse members to transmit information about battery modules to a battery management unit, optimizing space utilization and reducing wiring complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wired communication is used to transmit information between battery modules and BMU, then communication reliability is improved, but device complexity and wiring intricacy increase
Solution Approach 1:
The battery system is divided into multiple battery modules, each equipped with its own communication unit. This segmentation allows distributed communication where each module can independently transmit data wirelessly to the BMU, eliminating the need for complex centralized wiring while maintaining reliable communication across all modules.
Solution Approach 2:
The patent replaces the mechanical wiring system with a wireless communication system using antenna modules. The communication units in each battery module transmit information wirelessly to the BMU, substituting physical electrical connections with electromagnetic signal transmission, thereby reducing wiring complexity while maintaining communication reliability.
2Device complexity
If wireless communication is used to transmit information between battery modules and BMU, then device complexity is reduced, but communication interference increases
Solution Approach 1:
The patent introduces communication units as intermediary devices between the battery modules and the BMU. These units are strategically positioned and equipped with antenna modules that facilitate wireless communication while being designed to minimize interference through proper shielding and positioning, thus mediating between the need for simple wiring and the risk of communication interference.
Solution Approach 2:
The communication units are positioned at specific locations within the battery case, and antenna modules are oriented in specific directions. This local optimization of communication unit placement and antenna orientation minimizes interference in critical communication paths while maintaining overall system functionality, addressing interference issues locally rather than requiring system-wide changes.
3Volume of moving object
If antenna modules are positioned close to battery modules, then space utilization is improved, but communication interference increases
Solution Approach 1:
The patent positions antenna modules in three-dimensional space above transverse members, utilizing the vertical dimension for antenna placement. This spatial arrangement allows the antennas to be close to battery modules for efficient space utilization while maintaining sufficient separation in the vertical direction to minimize electromagnetic interference, effectively using dimensional separation to resolve the contradiction.
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
Enhances flexibility in arranging battery modules and components, minimizes communication interference, and improves performance by effectively utilizing empty spaces within the battery case for seamless information transmission.
Implementation Method 1
a first antenna module provided at an edge of the battery lower case and connected to an adjacent battery module with the wiring. The first antenna module may be configured to transmit information about the adjacent battery module to the BMU
Data Source
AI summary
A battery case includes: a lower case accommodating a plurality of battery modules therein; a battery management unit (BMU) provided in the lower case and configured to monitor a state of the battery modules; and a communication unit provided at a lateral portion inside the lower case. The communication unit is connected to at least an adjacent battery module with wiring and is configured to transmit information about at least the adjacent battery module to the BMU through wired or wireless communication along a lengthwise or widthwise direction of the lower case.