Battery-to-Battery Fast Charging With Controlled 3C Discharge
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Solution Overview
Problem
Existing charging systems for battery-powered devices, particularly for large-scale applications like industrial equipment and electric vehicles, face challenges such as slow charging rates, uncertainty in battery duration, and limited availability of power supplies, especially in emergency situations.
Innovation Solution
A charging device and method that utilize a battery with high discharge rate capabilities, coupled with a controller and charging engine, to monitor and adjust the discharge rate based on battery conditions, allowing for fast charging of receiver batteries at rates of 3C or more.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a battery is charged using conventional charging systems, then the battery can be charged, but the charging time is excessively long and the charging rate is slow
Solution Approach 1:
The patent changes the electrical parameters of the charging system by using a high-discharge-rate battery (3000W) to provide high-current DC output (up to 500A), transforming the conventional slow charging process into a rapid charging process that can charge receiver batteries at rates of 3C or higher, reducing charging time from hours to minutes
Solution Approach 2:
The charging device performs preliminary action by pre-storing energy in a high-capacity battery with fast discharge capabilities, allowing it to immediately deliver high-power charge to the receiver battery when connected, without needing to draw power slowly from the grid during the charging process
2Productivity
If the discharge rate of the battery is increased to provide fast charging, then the charging speed improves, but the battery condition may deteriorate and safety risks increase
Solution Approach 1:
The patent implements feedback control through a controller that continuously monitors battery parameters (voltage, current, temperature) and adjusts the discharge rate in real-time. The system increases discharge rate to 3C or higher only when battery conditions are optimal, and reduces or stops discharge when thresholds are approached, creating a closed-loop control system that balances speed and safety
Solution Approach 2:
The system dynamically adjusts the discharge rate based on real-time battery conditions rather than operating at a fixed rate. The controller modulates the power output to match the battery's instantaneous capacity to handle high discharge, allowing the system to exploit maximum safe discharge rates that vary during the charging process
3Power
If a portable charging device is designed to provide high power output for fast charging, then the charging capability improves, but the device becomes bulky and heavy
Solution Approach 1:
The patent uses lithium iron phosphate battery cells which have superior power density and discharge rate characteristics compared to conventional battery chemistries. This advanced battery technology allows the device to achieve 3000W power output with a more compact and lighter form factor than traditional lead-acid or standard lithium-ion batteries would require
4Adaptability or versatility
If conventional charging systems are used, then the charging process is simple, but the availability of power supply is limited and charging cannot be performed in emergency situations
Solution Approach 1:
The charging device is self-contained with an integrated high-discharge-rate battery that provides autonomous charging capability without requiring external power infrastructure. The device can independently deliver fast charging to receiver batteries in any location, making the system self-sufficient and adaptable to emergency situations where grid power is unavailable
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
Enables rapid and high-rate charging of battery-powered devices, improving their real-world usability and reliability, especially for long journeys, while ensuring safe operation and maintaining battery health.
Implementation Method 1
a battery, wherein the battery comprises an electrochemical cell
Data Source
AI summary
The invention relates to a battery-to-battery charging device, method of charging and use of the charging device. The method comprises steps of discharging a battery to a power connector using a charging engine, wherein a receiver battery is separably connectable to the power connector, sending data on the condition of the battery to a controller, and adjusting the discharge rate of the battery to increase the discharge rate, wherein the discharge rate is increased to a rate of 3C or more. The device can be used for providing fast battery-to-battery charging, in particular from a portable battery to a larger receiver battery (for example an electric vehicle or uninterrupted power supply battery).