Bidirectional Charger Module for Dynamic Current Assistance
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Solution Overview
Problem
Conventional energy storage devices experience instability and prolonged response times due to fixed current provision and the need for switching between buck and boost circuits, failing to meet dynamic energy demands of electronic devices effectively.
Innovation Solution
An energy storage device with a charger module that operates in boost or buck mode based on input current levels, eliminating the need for separate buck and boost circuits by using a control method that adjusts current flow to assist the adapter in charging electronic devices, thereby stabilizing operation and reducing response time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a buck circuit and a boost circuit are used to achieve voltage leveling, then the energy storage device can charge both the battery and electronic devices, but the device complexity increases and response time is prolonged
Solution Approach 1:
The patent merges the buck and boost circuits into a single bidirectional converter that can operate in both buck and boost modes. This single integrated circuit replaces the conventional separate buck and boost circuits, reducing device complexity while maintaining the ability to charge both the battery and electronic devices with voltage leveling capability.
Solution Approach 2:
The bidirectional converter is designed to perform multiple functions: it can operate as a buck converter to charge the battery from the adapter, as a boost converter to charge electronic devices from the battery, and simultaneously manage power flow in both directions. This multi-functional design eliminates the need for separate dedicated circuits.
2Ease of operation
If the battery provides a fixed current, then the charging process is simple, but the energy storage device becomes unstable when load conditions change
Solution Approach 1:
The patent implements dynamic current adjustment where the battery's output current is not fixed but is modulated in real-time based on the charging requirements of the electronic device. The controller dynamically adjusts the current supplied by the battery through the bidirectional converter, ensuring stable operation even when load conditions change, rather than using a fixed current approach.
Solution Approach 2:
The system incorporates feedback control where the controller monitors the charging status and load conditions, then adjusts the battery's current output accordingly. This feedback mechanism ensures that the battery provides the appropriate current level to maintain stability and meet the electronic device's requirements, preventing the instability that occurs with fixed current provision.
3Productivity
If the controller generates control signals to switch between buck and boost circuits, then the energy flow can be managed, but the response time increases
Solution Approach 1:
The bidirectional converter is pre-configured with all necessary circuit components (switches, inductors, capacitors) in a topology that can rapidly transition between buck and boost modes. The controller has pre-programmed switching sequences and parameters ready, allowing it to immediately switch operating modes when needed without requiring time-consuming reconfiguration or signal generation delays.
Solution Approach 2:
The patent replaces the conventional mechanical or sequential switching mechanism with a digitally controlled bidirectional converter that uses electronic switching devices (such as MOSFETs or IGBTs) controlled by PWM signals. This electronic substitution allows for much faster switching responses compared to traditional mechanical relay-based or sequential circuit switching, significantly reducing response time while maintaining effective energy flow management.
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 solution provides stable and timely energy delivery to electronic devices by dynamically adjusting current flow, reducing manufacturing costs and circuit complexity while ensuring sufficient energy supply without the instability associated with conventional switching modes.
Implementation Method 1
an energy storage unit (13)... The energy storage unit stores energy or provides energy
Implementation Method 2
The charger module receives the input current and supplies a first current to the energy storage unit to charge the energy storage unit. Otherwise, the charger module supplies the input current to the electronic device to charge the electronic device
Data Source
AI summary
An energy storage device capable of receiving energy using an energy input interface or charging an electronic device using an energy output interface. The energy storage device includes an adapter, an energy storage unit and a charger module. The adapter provides the charger module with an input current, and the charger module provides the energy storage unit with a first current. Otherwise, the charger module provides the electronic device with the input current. When the input current provided by the adapter is higher than a maximum safe current of the adapter, the energy storage unit provides the charger module with a second current. The charger module outputs energy to the electronic device according to the second current to assist the adapter to charge the electronic device. The second current is opposite to the first current.