Wireless Power Frequency Control for Low-Load Cooking Appliances
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Solution Overview
Problem
Existing wireless power transmission devices face inefficiencies in power transmission due to uncontrolled frequency settings, particularly in low-load states, which can lead to device damage and increased power loss.
Innovation Solution
A wireless power transmission device and method that includes a communication interface and processor to identify the type of cooking appliance, determine a limited frequency, and set an operation frequency range for power transmission in low-load states, preventing device damage and optimizing power efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power is transmitted without limit in frequencies in a low-load state, then power transmission capability is maintained, but device damage may occur and power loss increases
Solution Approach 1:
The patent implements dynamic frequency adjustment by setting different operation frequency ranges based on load states. In low-load states, a limited frequency range is applied to prevent device damage and reduce power loss, while in normal states, the full frequency range is available for optimal power transmission.
Solution Approach 2:
The system changes the operational parameters (frequency range) based on the cooking appliance type and load state. Transmission frequency information is stored in memory and selectively applied to optimize both safety and energy efficiency under different operating conditions.
2Productivity
If frequency settings are not adjusted according to cooking appliance type, then device complexity is reduced, but power transmission efficiency decreases
Solution Approach 1:
The patent stores transmission frequency information in advance in memory, organized by cooking appliance type. When a cooking appliance is detected, the system automatically retrieves and applies the appropriate frequency settings, eliminating the need for complex real-time frequency analysis.
Solution Approach 2:
The system uses communication interfaces to receive identification information from cooking appliances and provides feedback by adjusting the transmission frequency accordingly. This closed-loop approach optimizes power transmission efficiency while maintaining manageable system 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
The solution effectively reduces power loss and prevents device damage by adjusting frequency settings based on appliance type, enhancing the efficiency and safety of power transmission in low-load conditions.
Implementation Method 1
A wireless power transmission device is a heating appliance for cooking by using the principle of induction heating
Implementation Method 2
a receiving coil configured to wirelessly receive power from a wireless power transmission device
Data Source
AI summary
A wireless power transmission device is provided. The wireless power transmission device includes a wireless power transmitter configured to wirelessly transmit power to a cooking appliance, a communication interface configured to establish a wireless communication connection to the cooking appliance, memory storing one or more programs including instructions and transmission frequency information for each of a plurality of cooking appliances including a load, and one or more processors, wherein instructions, when executed by the one or more processors, cause the wireless power transmission device to control the communication interface to receive identification information related to a type of the cooking appliance, determine a limited frequency corresponding to the identification information, based on the transmission frequency information, and set an operation frequency range of first power being transmitted to the cooking appliance in a low-load state in which an operation of a main load of the cooking appliance is stopped, based on the limited frequency.