Multilevel Battery Converter for Variable Module Configurations
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Solution Overview
Problem
Existing battery storage systems face challenges in accommodating a variable number of batteries with different types and capacities, requiring a flexible and efficient configuration that allows easy exchange and operation with random placement.
Innovation Solution
A battery storage system incorporating a multilevel converter and modular storage sections with interchangeable battery modules, equipped with detection mechanisms and a controller to manage battery presence, type, and operational data, enabling dynamic configuration and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed configuration of battery storage system is used, then the system structure is simple, but it cannot accommodate variable number of batteries with different types and capacities
Solution Approach 1:
The battery storage system is divided into multiple independent storage sections, each capable of holding different battery modules. This segmentation allows the system to accommodate variable numbers and types of batteries by selectively activating appropriate sections, resolving the contradiction between adaptability and complexity.
Solution Approach 2:
The system employs dynamic configuration capabilities where storage sections can be selectively activated or deactivated based on battery availability and system requirements. This dynamic adaptability allows the system to handle variable battery configurations without requiring a completely complex fixed structure for all possible scenarios.
2Ease of operation
If batteries are designed for easy exchange, then maintenance and updates are simplified, but connection reliability and electrical contact stability may be compromised
Solution Approach 1:
The system separates the battery module from the storage section, with standardized interfaces at the boundaries. This segmentation enables easy exchange of battery modules while maintaining reliable electrical connections through robust standardized connectors that are optimized for both ease of connection and electrical reliability.
Solution Approach 2:
Standardized connectors serve as intermediaries between battery modules and storage sections. These connectors are designed to provide reliable electrical contact while enabling easy insertion and removal, mediating between the requirements for exchangeability and connection reliability.
3Adaptability or versatility
If multiple types of batteries with different voltages and capacities are used, then system flexibility increases, but detection and management complexity increases
Solution Approach 1:
The controller incorporates detection means that automatically query battery parameters such as voltage, capacity, and type when batteries are inserted or placed in storage sections. This feedback mechanism allows the system to adapt to different battery configurations and manage them appropriately without requiring complex manual configuration or detection procedures.
Data Source
AI summary
A battery storage system includes a multilevel-converter and a plurality of storage sections. Each storage section includes at least one holding means configured to hold at least one battery and at least one cable with at least one connector configured to electrically connect at least one of the batteries. The multilevel-converter includes a plurality of converter modules connected in series with each other and each converter module has at least one bypass switch configured to bypass the converter module and a battery switch configured to disconnect the battery at the same time when the bypass switch is on. The battery storage system further includes a controller with means for detecting the presence of a battery in each storage section and means for configuring the switches of the plurality of converter modules based on the presence of batteries such that the plurality of converter modules provides a required voltage.