Wireless Cooking Power Structure for Faster Startup Communication
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Solution Overview
Problem
Existing wireless power cooking devices require a long time for power stabilization, during which users cannot operate or check information from the device.
Innovation Solution
A cooking device employing a multi-power structure with a rectification unit, capacitors, and a switch configuration to quickly stabilize power and enable communication unit activation before full power stabilization, allowing users to check minimal information during the process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If single power is used through a pickup coil for wireless power supply, then the device structure is simple, but power stabilization takes a long time and users cannot check information during this period
Solution Approach 1:
The power supply system is segmented into multiple independent power sources: a first power source (pickup coil) for receiving wireless power and a second power source (capacitor) for providing stored power. This segmentation allows the communication unit to be powered by the capacitor during initialization, enabling early information display without waiting for the pickup coil to complete power stabilization, thus resolving the contradiction between fast power stabilization and structural simplicity.
Solution Approach 2:
The capacitor is charged in advance before the communication unit needs to operate. By pre-storing energy in the capacitor, the system can immediately power the communication unit when needed, without waiting for the wireless power reception to stabilize. This preliminary action eliminates the waiting time for users to check device information while maintaining a simple overall structure.
2Ease of operation
If single power is used through a pickup coil, then the device structure is simple, but users cannot operate or check information during power stabilization period
Solution Approach 1:
The power distribution is segmented so that different units use different power sources. The communication unit uses the capacitor (second power source) for immediate operation, while other units use the pickup coil (first power source). This allows users to check device information through the communication unit during the power stabilization period, improving ease of operation without extending the overall power stabilization time.
Solution Approach 2:
The capacitor acts as an intermediary power source that bridges the gap between wireless power reception and immediate power requirements. It provides temporary power to the communication unit, enabling user interaction during the stabilization period, thus resolving the contradiction between user accessibility and power stabilization time.
3Speed
If multiple capacitors with different capacitances are used for power stabilization, then power stabilization speed is improved, but device complexity increases
Solution Approach 1:
Different capacitance values are assigned to different capacitors based on their specific functions. The first capacitor has a capacitance suitable for its specific power stabilization requirement, while the second capacitor has a different capacitance optimized for the communication unit's power needs. This local optimization achieves fast power stabilization without requiring a complex uniform configuration across all components.
Solution Approach 2:
The power stabilization function is segmented across multiple capacitors with different capacitances, each serving specific units. This segmented approach allows each capacitor to be optimized for its particular function, achieving overall fast power stabilization while maintaining reasonable device complexity through functional specialization rather than uniform complexity.
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 quick power stabilization and allows users to check device information without waiting for full power stabilization, enhancing usability and efficiency.
Implementation Method 1
a rectification unit configured to rectify an alternating current (AC) of the pickup coil corresponding to the power received by the pickup coil, to produce a direct current (DC)
Implementation Method 2
a first capacitor configured to be charged in accordance with the DC current produced by the rectification unit to activate the communication unit
Implementation Method 3
a second capacitor having a capacitance greater than a capacitance of the first capacitor, configured to be charged in accordance with the DC current produced by the rectification unit to activate the controller
Implementation Method 4
a pickup coil configured to wirelessly receive power from a transmitting coil of the wireless power transmission device
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
A cooking device including a controller configured to, after being activated, control an operation of the cooking device; a communication unit configured to, after being activated, transmit data to a wireless power transmission device; a pickup coil configured to wirelessly receive power from a transmitting coil of the wireless power transmission device; a rectification unit configured to rectify an alternating current (AC) of the pickup coil corresponding to the power received by the pickup coil, to produce a direct current (DC);a first capacitor configured to be charged in accordance with the DC current produced by the rectification unit to activate the communication unit before an activation of the controller; and a second capacitor, having a capacitance greater than a capacitance of the first capacitor, configured to be charged in accordance with the DC current produced by the rectification unit to activate the controller, wherein the communication unit transmits the data to the wireless power transmission device before the activation of the controller, is provided.