Cleaner
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Solution Overview
Problem
Existing cleaners face limitations in battery recharging due to safety hazards associated with high power levels, restricted usage time, and the need for higher voltage, which complicates the design and increases costs.
Innovation Solution
A cleaner design featuring two batteries connected in series for discharge and parallel during charging, utilizing a power supply circuit with switching units to manage voltage levels, allowing for safe recharging at a lower power level and efficient operation at a higher power level, with a controller managing the connection states and ascending/descending functionality for enhanced user convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a larger battery is provided to supply higher voltage for strong suction force, then the power level is improved, but the cost and weight increase
Solution Approach 1:
The battery system is divided into multiple battery packs (first battery pack and second battery pack) that can be connected in series to provide higher voltage for strong suction force, or separated for individual recharging. This segmentation allows the cleaner to achieve high power when needed while avoiding the weight and cost of a single large battery by using multiple smaller units that can be independently managed.
2Power
If batteries are connected in series to provide high voltage, then the power level is improved, but the recharging voltage becomes high causing safety hazards
Solution Approach 1:
The battery connection configuration is made dynamic and switchable between series and parallel connections. During operation, batteries are connected in series to provide high voltage for strong suction force. During recharging, the system switches to parallel connection to reduce the recharging voltage to safe levels, eliminating the safety hazard associated with high-voltage charging while maintaining the ability to deliver high power when needed.
Solution Approach 2:
The electrical connection parameters of the battery packs are changed based on operational requirements. The system switches between series connection (for high voltage output during cleaning) and parallel connection (for safe recharging). This parameter change allows the same battery system to satisfy both high power delivery and safe recharging requirements without compromising either aspect.
3Volume of moving object
If multiple battery packs are installed separately to reduce individual sizes, then the device complexity is improved, but the connection management becomes complex
Solution Approach 1:
The battery packs are designed with universal connection terminals that support both series and parallel configurations using the same physical interface. The cleaning device includes a switching mechanism that can reconfigure the battery connections without requiring different connectors or complex manual wiring. This multi-functionality simplifies the overall system by allowing the same battery packs to serve both high-voltage operation and safe recharging purposes through automated switching.
Data Source
AI summary
A cleaner includes a cleaner body, a power supply including a first battery and a second battery that are accommodated in the cleaner body, and a power supply circuit configured to operate in a charge mode for receiving power from the outside to recharge the first and second batteries or in a discharge mode for supplying the power recharged in the first and second batteries to a load, a charging terminal connected to an external charging stand and configured to supply direct current (DC) power to the first and second batteries in the charge mode, and a controller configured to control an operation of the power supply in the discharge mode and the charge mode.