Portable EV Charger System with Parallel Storage Batteries
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Solution Overview
Problem
Existing charging systems for electrified vehicles lack efficient and portable solutions for charging traction batteries, especially when external power sources are unavailable or insufficient.
Innovation Solution
A portable charger system comprising two interconnected chargers with storage batteries and electronic conversion modules, allowing for parallel or series connections to adjust and provide electrical energy efficiently to the traction battery, enabling charging of multiple vehicles simultaneously and bi-directional power flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a single portable charger is used to charge the traction battery, then the device portability is maintained, but the charging power and speed are limited
Solution Approach 1:
The patent combines multiple portable chargers (first portable charger and second portable charger) into a unified charging system that connects to the same traction battery. Each charger includes a storage battery and electronic conversion module, and they work together to provide combined charging power that exceeds what a single charger could deliver, while maintaining portability through the use of multiple modular units rather than one large complex system.
2Productivity
If multiple portable chargers are used to increase charging power, then the charging speed improves, but the system complexity increases
Solution Approach 1:
The charging system is segmented into independent modular units (first portable charger with its storage battery and electronic conversion module, second portable charger with its storage battery and electronic conversion module). Each module can function independently but also works cooperatively with others. This segmentation allows the system to achieve higher charging speeds through parallel operation while keeping individual units simple and manageable.
Solution Approach 2:
The system dynamically adjusts the operation of multiple portable chargers based on charging needs. The controllers of each charger can independently manage their storage batteries and electronic conversion modules, allowing flexible configuration where chargers can operate in parallel for maximum power or independently if needed, thus managing system complexity through dynamic adaptability.
3Adaptability or versatility
If external power sources are used to charge the traction battery, then the charging capability is sufficient, but the portability and availability are reduced
Solution Approach 1:
The portable chargers are designed as universal charging solutions that can charge traction batteries of electrified vehicles without requiring connection to external power grids or infrastructure. Each portable charger contains its own storage battery and electronic conversion module, making the system self-contained and highly portable while providing full charging capability independent of external power sources.
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
The system provides a flexible and efficient means to charge electrified vehicles' traction batteries using portable chargers, allowing for simultaneous charging of multiple vehicles and enabling bi-directional power flow, enhancing charging capabilities and convenience.
Implementation Method 1
an electronic conversion module configured to adjust parameters of electrical energy received from the storage battery to provide adjusted electrical energy that charges the traction battery
Implementation Method 2
The storage batteries of the first and second portable chargers are connected in parallel when charging the traction battery
Data Source
AI summary
An exemplary charging system includes, among other things, a first portable charger that electrically couples to an electrified vehicle to charge a traction battery of the electrified vehicle while a second portable charger is providing electrical energy to charge the traction battery. An exemplary charging method includes, among other things, electrically coupling both a first and a second portable charger to an electrified vehicle to charge a traction battery of the electrified vehicle using electrical energy from both the first and the second portable chargers.