Solenoid Control Algorithm for Battery Life Optimization
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Solution Overview
Problem
Solenoids in battery-powered devices face premature battery depletion due to inefficient power management, leading to increased replacement and disposal costs, as existing solutions are often application-specific and fail to optimize battery life across varying battery voltages.
Innovation Solution
A controller with a control algorithm that divides the solenoid's operating time into zones, using peak-and-hold methods to optimize power delivery, monitoring battery voltage, and adjusting power consumption to minimize battery discharge, thereby extending battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the solenoid coil is designed to operate at the minimum battery voltage (2.4V or 1.8V), then the solenoid can function at end of battery life, but the power consumption increases by 56% or more when new batteries are used, significantly reducing battery life
Solution Approach 1:
The patent applies dynamics by making the solenoid coil's electrical resistance variable rather than fixed. The coil resistance is dynamically adjusted based on battery voltage levels: at high voltage (new batteries), the resistance is increased to reduce current and power consumption; at low voltage (end of life), the resistance is decreased to maintain sufficient current for solenoid operation. This dynamic adjustment resolves the contradiction between maintaining reliability across the battery voltage range and minimizing power consumption.
Solution Approach 2:
The patent changes the electrical parameter (resistance) of the solenoid coil to optimize performance. By varying the coil resistance as a function of battery voltage, the system adapts to different operating conditions. The resistance parameter is specifically designed to be higher when battery voltage is high and lower when battery voltage is low, thereby resolving the contradiction between reliable operation and power consumption efficiency.
2Use of energy by moving object
If the solenoid coil resistance is increased to reduce power consumption, then battery life is extended, but the solenoid may not receive sufficient current to operate reliably, especially at lower battery voltages
Solution Approach 1:
The patent resolves this contradiction by dynamically adjusting the coil resistance based on real-time battery voltage conditions. When battery voltage is high, the resistance is increased to limit current and reduce power consumption. When battery voltage drops, the resistance is automatically decreased to ensure sufficient current reaches the solenoid for reliable operation. This dynamic behavior ensures both energy efficiency and operational reliability across the entire battery voltage range.
Solution Approach 2:
The system employs feedback by continuously monitoring battery voltage and using this information to adjust the coil resistance accordingly. The control algorithm receives feedback about the battery's state of charge and voltage level, then modifies the coil resistance to optimize both power consumption and solenoid performance. This closed-loop control ensures the system adapts to changing conditions and maintains reliability while minimizing energy use.
3Ease of manufacture
If a fixed coil resistance is used, then the device is simpler to manufacture and operate, but it cannot optimize battery life across the range of battery voltages
Solution Approach 1:
The patent introduces dynamics into an otherwise simple solenoid system by making the coil resistance variable. This is achieved through a control algorithm that adjusts the effective resistance based on battery voltage. While this adds some complexity compared to a fixed resistance design, the implementation is achieved through electronic control rather than complex mechanical structures, thereby extending battery life without significantly complicating manufacturing or operation.
Solution Approach 2:
The patent makes the solenoid system universal by enabling it to operate efficiently across the entire battery voltage range, from fresh to depleted batteries. The variable resistance control allows the same device to adapt to different battery conditions, making it universally applicable without requiring different hardware configurations. This multi-functionality resolves the contradiction between simplicity and optimized battery life extension.
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 controller effectively maximizes battery life by ensuring the solenoid receives only the minimum necessary power, reducing power consumption and prolonging device operation across the range of battery voltages.
Implementation Method 1
A controller with a control algorithm that divides the solenoid's operating time into zones, using peak-and-hold methods to optimize power delivery
Data Source
AI summary
The present disclosure is directed to systems and methods for controlling energy consumption in a system having a battery and including a controller and one or more solenoids. In accordance with the disclosure, the controller provides a controlling mechanism, such as a control algorithm, that will provide the necessary power to operate the one or more solenoids throughout the range of battery voltage in a manner that optimizes the voltage discharge from the battery and simultaneously maximizes battery life. Further power conservation measures are implemented by using a controller and an associated control algorithm to operate a solenoid throughout the range of battery voltage in a manner that places the discharge of the battery in reduced power consumption operating modes as the capacity of the battery is reduced.