USB Rechargeable SLA Battery Jump Starter with Boost Converter
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Solution Overview
Problem
Sealed lead acid (SLA) batteries cannot be charged via a Universal Serial Bus (USB) using traditional USB circuits, limiting their recharging options compared to other devices.
Innovation Solution
A USB rechargeable sealed lead acid battery jump starter with a triple voltage select feature, allowing output options of 5V, 12V, or 20V, and incorporating a 5V USB charging system with a boost converter for efficient recharging and power output, enabling charging of both the internal battery and external devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional USB circuits are used, then USB compatibility is achieved, but SLA batteries cannot be charged
Solution Approach 1:
The patent transforms the fixed 5V USB input parameter through a boost converter circuit that can output higher voltages (up to 48V or more) suitable for charging SLA batteries of various sizes. This parameter transformation enables USB charging capability for SLA batteries while maintaining USB compatibility.
Solution Approach 2:
The boost converter acts as an intermediary device between the USB input and the SLA battery. It receives 5V from USB and converts it to the appropriate voltage for charging the battery, resolving the incompatibility between USB output capabilities and SLA battery charging requirements.
2Power
If high power output is provided, then ability to recharge high output electronics is improved, but device complexity increases
Solution Approach 1:
The boost converter circuit serves multiple functions: it charges the internal SLA battery from USB input, and also provides high-power output to charge external devices like laptops. This multi-functionality achieves high power output capability while minimizing the addition of separate circuitry.
Solution Approach 2:
The patent combines the charging circuit and power output circuit into a single integrated system. The boost converter handles both the battery charging function and the external device power output function, reducing overall device complexity compared to having separate circuits for each function.
3Adaptability or versatility
If triple voltage select feature is added, then versatility of power output is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic voltage selection where the output voltage automatically adjusts based on the connected device requirements or user selection. The switching mechanism between 5V, 12V, and 20V outputs is designed to be simple, using basic switch elements that select from the same boost converter output based on voltage detection or user input.
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 efficient recharging of SLA batteries and high-power electronics through USB, providing versatile and high-efficiency power solutions for emergencies and device recharging, including large batteries, with improved charging rates and compatibility with various USB outlets.
Implementation Method 1
5V USB charging system with a boost converter
Data Source
AI summary
A sealed lead acid (SLA) battery jump starter system that charges and recharges via a single two-way USB, thus providing for a two-way power in/power out feature using a single USB port. The output is preferably provided with a ‘triple voltage select’ feature. In one non-limiting embodiment, the triple voltage select feature can allow for an output of either 5V, 12V or 20V. The system provides for higher power, a versatile design, and higher efficiency by integrating a USB charging circuit to recharge a lead acid battery in conjunction with drawing power from the lead acid battery to provide a preferred triple output switch mode selectable power. The system provides for a USB rechargeable charging circuit that can be capable of providing input low power to recharge lead acid batteries and also providing power out (preferably triple voltage and current choices) to recharge high output electronics.