Cordless Cleaner Motor Speed Control for Battery Pack Variations
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Solution Overview
Problem
Existing cleaning systems lack the ability to dynamically adjust motor speed based on different battery packs, which can affect suction power and efficiency during cleaning operations.
Innovation Solution
A cleaning system that includes a motor, a battery receptacle, and a motor controller capable of receiving and responding to different types of data from battery packs, allowing the motor to operate at varying speeds depending on the connected battery pack, thereby optimizing suction power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the motor operates at a fixed high speed to maintain strong suction power, then cleaning performance is improved, but energy consumption increases and battery life decreases
Solution Approach 1:
The motor controller dynamically adjusts motor speed based on real-time feedback from the battery controller about remaining capacity and charge rate capabilities. The system transitions from static fixed-speed operation to dynamic variable-speed operation, allowing the motor to operate at optimal speeds that balance cleaning performance with energy conservation and battery protection
Solution Approach 2:
The battery controller provides continuous feedback data to the motor controller about battery state (remaining capacity, charge rate capability). This feedback loop enables the motor controller to adjust motor speed in response to battery conditions, optimizing the balance between cleaning performance and energy management
2Productivity
If the motor operates at high speed for extended periods, then cleaning productivity is improved, but battery overheating and damage risk increases
Solution Approach 1:
The system proactively monitors battery temperature and charge state before critical thresholds are reached. The battery controller communicates upcoming limitations (such as reduced charge acceptance or temperature constraints) to the motor controller in advance, allowing the motor speed to be adjusted preemptively to prevent overheating and battery damage
Solution Approach 2:
The motor speed is dynamically adjusted based on real-time battery temperature and charge state feedback. When the battery approaches thermal or capacity limits, the motor controller reduces speed to maintain safe operating conditions, preventing battery damage while maintaining adequate cleaning performance
3Use of energy by moving object
If the motor speed is reduced to conserve battery energy, then energy consumption decreases, but suction power and cleaning effectiveness deteriorate
Solution Approach 1:
The system dynamically adjusts motor speed based on real-time battery state feedback rather than operating at a fixed low speed. This allows the motor to maintain high speed when battery capacity is sufficient and reduce speed only when necessary to conserve energy or protect the battery, optimizing the balance between energy efficiency and cleaning effectiveness throughout the battery's discharge cycle
Solution Approach 2:
The motor controller changes operational parameters (speed, power output) based on battery state feedback. The system transitions from static speed settings to dynamic parameter adjustment, allowing optimal cleaning performance when energy is abundant and energy-efficient operation when battery capacity is limited
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 operation by adjusting motor speed according to the characteristics of the battery pack, enhancing cleaning performance and adaptability across different battery capacities and types.
Implementation Method 1
The battery pack includes one or more battery cells and a battery controller
Data Source
AI summary
A cleaning system including a motor, an impeller driven by the motor, a battery receptacle, and a motor controller. The battery receptacle is configured to receive a battery pack. The battery pack includes one or more battery cells and a battery controller. The motor controller is configured to receive from the battery controller one of a first type of data and a second type of data, and operate the motor at a defined speed, the defined speed being a first speed upon receiving the first type of data, and a second speed upon receiving the second type of data.