Booster Circuit for Continuous AC Output
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional portable power supplies powered by battery cell groups cannot continuously provide alternating current due to limited battery energy, which is a constraint for power tools and outdoor applications requiring sustained power.
Innovation Solution
A power supply device with a booster circuit and inverter circuit that increases battery pack voltage to high-voltage direct current and then inverts it to alternating current, using transformers and rectifier bridges, along with a controller to manage power switch transistors for efficient pulse voltage generation, allowing for continuous alternating current output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If traditional portable power supplies use battery cell groups, then the device is compact and portable, but the alternating current cannot be continuously provided once the battery runs out of electrical energy
Solution Approach 1:
The power supply device segments the battery energy storage system into multiple battery pack slots (first battery pack slot, second battery pack slot, etc.), allowing multiple battery packs to be connected in series or parallel to accumulate sufficient energy capacity for continuous high-power AC output while maintaining portability
Solution Approach 2:
The device performs preliminary voltage boosting through the booster circuit before inversion, pre-charging capacitors and building up sufficient voltage energy in the DC link, ensuring that when AC output is needed, continuous power delivery is possible without waiting for battery depletion
2Power
If the rated power is increased to 350W or higher for high-power applications, then the power supply capability is improved, but the device complexity increases due to the need for booster and inverter circuits
Solution Approach 1:
The booster circuit and inverter circuit are merged into a single integrated power conversion system sharing common components such as the transformer, control unit, and housing, reducing overall device complexity while achieving 350W or higher rated power capability
Solution Approach 2:
The transformer serves multiple functions: voltage transformation for both boosting and inversion operations, impedance matching, and electrical isolation, reducing the need for separate components and simplifying the overall circuit structure despite high power requirements
3Power
If multiple battery packs are connected in series to increase voltage, then the high-voltage DC output is improved, but the device complexity increases due to switching and control requirements
Solution Approach 1:
The control unit dynamically switches between series and parallel battery pack configurations based on the required output voltage and power level, optimizing performance while using the same physical components for different operating modes, thereby managing complexity through adaptive reconfiguration
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 device provides a compact, portable solution for continuous alternating current output, supporting high-power applications by efficiently managing battery energy and extending battery life, making it suitable for power tools and outdoor use.
Implementation Method 1
a booster circuit, which is electrically connected to the plurality of battery pack ports to increase voltages of the plurality of battery packs to output a high-voltage direct current voltage; and an inverter circuit, which is electrically connected to the booster circuit to invert the high-voltage direct current voltage output by the booster circuit into an alternating current
Implementation Method 2
a rectifier bridge, which is electrically connected to the transformer group to convert the predetermined voltage into a high-voltage direct current after pulse rectification
Data Source
AI summary
A power supply device and a booster circuit for a power supply device. The booster circuit includes an access terminal configured to access a direct current voltage from a battery pack, a transformer group electrically connected to the access terminal so that the accessed direct current voltage is boosted to a predetermined voltage by the transformer group, and a rectifier bridge electrically connected to the transformer group to convert the predetermined voltage into a high-voltage direct current after pulse rectification. The transformer group includes a first transformer including a first primary side and a first secondary side and a second transformer including a second primary side and a second secondary side. The power supply device disclosed is compact in structure and convenient to carry and can output an alternating current.