Brushless Motor Starter Box With ESC Battery Protection
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Solution Overview
Problem
Existing starter boxes for small scale racing and off-road fuel powered vehicles lack speed control and battery protection, using brushed electric motors without control mechanisms, which can lead to inefficient engine starting and battery damage.
Innovation Solution
A brushless DC motor starter box with electronic speed control (ESC) that varies current to the motor, includes circuitry for battery protection against overcharging and low voltage, and optional features like programmable throttle and latency, and a battery charging circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a brushed electric motor is used in the starter box, then the device is simpler and cheaper to manufacture, but the device lacks speed control and battery protection capabilities
Solution Approach 1:
The patent replaces the brushed motor with a brushless DC motor, which eliminates mechanical brushes and commutators. This substitution enables electronic speed control through an ESC (Electronic Speed Control) system, providing both speed regulation and battery protection capabilities while maintaining manufacturing feasibility through standardized electronic components
Solution Approach 2:
The patent introduces an Electronic Speed Control (ESC) system as an intermediary between the battery and the brushless motor. The ESC provides both speed control functionality and battery protection features (overcharge, discharge, and temperature monitoring), resolving the contradiction by adding a mediating component that delivers multiple protective and control functions
2Device complexity
If no electronic speed control is provided, then the device is simpler, but the power application curve cannot be controlled leading to inefficient engine starting
Solution Approach 1:
The patent implements dynamic speed control through the ESC system, which can vary the power delivery to the brushless motor in real-time. This allows optimization of the power application curve for efficient engine starting, transforming the static, fixed-power delivery of uncontrolled motors into a dynamic, adjustable system that adapts to engine starting requirements
Solution Approach 2:
The patent changes the operational parameters of the motor control system by introducing electronic speed control. The ESC can adjust voltage, current, and rotation speed parameters dynamically, enabling optimized power delivery curves that improve engine starting efficiency while maintaining reasonable device complexity through standardized electronic control components
3Ease of manufacture
If no battery protection circuitry is provided, then the device is simpler to manufacture, but the batteries can be damaged from overcharging or excessive discharge
Solution Approach 1:
The patent introduces the Electronic Speed Control (ESC) system as a protective intermediary between the battery and the motor load. The ESC continuously monitors battery parameters (voltage, current, temperature) and interrupts power flow when dangerous conditions are detected, providing battery protection without requiring separate complex protection circuitry
Solution Approach 2:
The patent implements feedback control through the ESC system, which continuously monitors battery status and adjusts or interrupts power delivery based on real-time conditions. This feedback mechanism prevents overcharging, excessive discharge, and temperature-related battery damage while maintaining manufacturing simplicity by integrating protection functions into the existing electronic control system
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 controlled power application for efficient engine starting, protects batteries from overcharging and low voltage, and offers adjustable settings for improved performance and durability, while being cost-effective.
Implementation Method 1
The present invention employs a brushless DC motor to turn the rubber drive wheel
Implementation Method 2
The transfer of power from the battery to the starter motor is controlled by a semiconductor switch using pulse-width modulation
Implementation Method 3
a rubber drive wheel against the flywheel of the engine
Data Source
AI summary
A starter box for small scale fuel powered vehicles includes a rigid container with two sets of mounting hardware on the top surface of the container. The mounting hardware engages suspension components of the vehicle. The starter box includes a drive wheel assembly connected to a brushless motor. The assembly includes a drive wheel with a frictional perimeter surface. The drive wheel extends partially through an opening in the top surface to engage a flywheel of the vehicle. Both sets of mounting hardware are horizontally movable to adapt to different vehicles. One set of mounting hardware is spring loaded and moves vertically when the vehicle is pressed downwardly to engage the drive wheel and a switch connecting the motor to a battery through an electronic speed control (ESC). The ESC is programmable to control the motor speed, acceleration, and latency of engagement while monitory the charge level of the battery.