Wireless Power Profile Negotiation for Stable High-Power Charging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless power transfer systems lack a protocol to identify and display support for high power profiles, leading to potential damage or instability when devices with different power capabilities attempt to transfer power.
Innovation Solution
A wireless power receiver and transmitter protocol that allows for the exchange of data packets to identify support for multiple power profiles, enabling efficient negotiation and prevention of high-power transfer to incompatible receivers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless power transfer is performed without a protocol to identify power profile support, then power transfer can be initiated quickly, but device damage or system instability may occur due to incompatible power profiles
Solution Approach 1:
The patent applies preliminary action by establishing a power profile identification protocol that executes before wireless power transfer begins. The receiver transmits its supported power profiles in advance, and the transmitter selects an appropriate profile based on this information, preventing incompatible power transfers before they can cause damage or instability.
Solution Approach 2:
The patent implements feedback through a bidirectional communication protocol where the receiver provides feedback about its supported power profiles, and the transmitter responds with power transfer parameters matched to those profiles. This feedback loop ensures compatibility and system stability throughout the power transfer process.
2Reliability
If a detailed protocol for power profile identification is implemented, then device compatibility and safety are improved, but the complexity of the wireless power system increases
Solution Approach 1:
The patent applies segmentation by dividing the power transfer process into distinct phases: a negotiation phase where power profiles are identified and matched, and a power transfer phase where energy is transmitted. This segmentation allows the complex protocol requirements to be confined to the negotiation phase while keeping the actual power transfer straightforward.
Solution Approach 2:
The patent uses parameter changes by defining discrete power profile parameters (first, second, and third profiles with different power levels) that devices can identify and match. By changing the power transfer parameters based on the identified profile, the system achieves compatibility without requiring complex continuous adjustments.
3Productivity
If power profiles are not negotiated before transfer, then the power transfer process is faster, but the risk of transferring high power to incompatible receivers increases
Solution Approach 1:
The patent applies preliminary action by completing power profile negotiation and identification before the actual power transfer begins. The receiver transmits its supported profiles in advance, allowing the transmitter to select an appropriate profile, thus preventing harmful power transfers before they can occur.
Solution Approach 2:
The patent implements preliminary anti-action by establishing a protocol that proactively prevents incompatible power transfers. The receiver's transmission of supported power profiles serves as a preemptive measure against receiving damage, allowing the transmitter to avoid selecting inappropriate power levels before the transfer starts.
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 stable and efficient power transfer by ensuring devices with compatible power profiles engage in power transfer, reducing the risk of damage and improving user experience.
Implementation Method 1
The magnetic induction method corresponds to a method transmitting power by using electric currents that are induced to the coil of the receiver by a magnetic field, which is generated from a coil battery cell of the transmitter, in accordance with an electromagnetic coupling between a transmitting coil and a receiving coil.
Implementation Method 2
The magnetic induction method corresponds to a method transmitting power by using electric currents that are induced to the coil of the receiver by a magnetic field, which is generated from a coil battery cell of the transmitter, in accordance with an electromagnetic coupling between a transmitting coil and a receiving coil.
Implementation Method 3
the magnetic resonance method is different from the magnetic induction method in that energy is transmitted due to a concentration of magnetic fields on both a transmitting end and a receiving end, which is caused by the generated resonance.
Data Source
Figure 1
Figure 2
Figure 3a
AI summary
A wireless power receiver device according to one embodiment of the present application receives wireless power from a wireless power transmitter device, wherein the wireless power receiver device receives the wireless power on the basis of any one of a first power profile, a second power profile having a higher power than the first power profile, and a third power profile having a higher power than the second power profile, and the wireless power transmitter device transmits the wireless power on the basis of any one profile from among the first power profile, the second power profile, and the third power profile, wherein a first data packet including first profile information indicating that the wireless power receiver device supports the third power profile is transmitted to the wireless power transmitter device, and a second data packet including second profile information indicating that the wireless power transmitter device supports the third power profile is received from the wireless power transmitter device.