Wireless Charging Housing With Grip Recess
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Solution Overview
Problem
Wireless charging of electronic devices is hindered by hand grips or cases that create separation between the inductor coil and receiving coil, requiring removal of these accessories for charging, which is inconvenient and increases the risk of loss.
Innovation Solution
A wireless charging system with a housing containing an induction coil and a hole for inserting a grip attached to the device, allowing the receiver coil to be brought closer to the induction coil for charging while the grip secures the device in place, using a transmitter circuit with a controller module and receiver circuit with components like rectifiers and regulators to manage current.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a grip is attached to the back of the electronic device for holding or mounting, then the device can be securely held or mounted, but the grip creates separation between the inductor coil and receiving coil, preventing wireless charging
Solution Approach 1:
The grip is inserted into a recess in the charging surface, nesting the grip within the charging structure. This allows the grip to remain attached to the device while the device can still be charged wirelessly, as the recess accommodates the grip's thickness without preventing magnetic field transmission.
Solution Approach 2:
The recess acts as an intermediary structure that mediates between the grip and the charging surface. By providing a dedicated space for the grip within the charging surface, it enables both gripping functionality and wireless charging to coexist without direct conflict.
2Strength
If the grip is made thicker to improve holding security, then the grip can better secure the device, but the magnetic field strength decreases due to increased separation distance
Solution Approach 1:
The thicker grip is nested within a corresponding recess in the charging surface. This nesting approach allows the grip to maintain its thickness for improved holding strength while the recess ensures the grip does not create excessive separation from the inductor coil, preserving magnetic field strength for effective wireless charging.
3Reliability
If the grip is removed to enable wireless charging, then charging can proceed without obstruction, but the grip may be lost and the device cannot be mounted or secured
Solution Approach 1:
The grip remains nested within the recess during the charging process, eliminating the need to remove the grip for charging. This ensures the grip stays attached to the device, preventing loss, while still allowing wireless charging to proceed effectively.
Solution Approach 2:
The grip continues to serve its useful function of securing and mounting the device continuously during the charging process. The nested design allows the grip to remain in place throughout charging, maintaining both its security function and the charging function simultaneously without interruption.
4Adaptability or versatility
If a recess is created in the charging surface to accommodate the grip, then wireless charging with attached grip becomes possible, but the charging surface structure becomes more complex
Solution Approach 1:
Instead of making the entire charging surface complex, only a localized recess is created at the specific area where the grip will be inserted. This localized modification provides the necessary accommodation for the grip while minimizing the overall structural complexity of the charging surface.
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 wireless charging without removing the grip or case, securely holding the device during charging, reducing the likelihood of loss and providing flexible mounting options.
Implementation Method 1
Wireless charging generally works by passing current through an inductor coil, typically within a charging stand or base, to create an electromagnetic field which can be used to induce current in a receiving coil within proximity of the magnetic field
Implementation Method 2
passing current through an inductor coil, typically within a charging stand or base, to create an electromagnetic field
Data Source
AI summary
A wireless charging system includes an induction coil to generate a magnetic field attached to a housing that has a hole in a surface to accept a grip. A user inserts a grip attached to an electronic device with a receiver circuit, including a receiver coil, into the hole bringing the receiver coil into contact with the magnetic field generated by the induction coil. The magnetic field induces a current in the receiver coil which is used to charge the electronic device. In certain instances, the housing is secured to another surface by an attached mount. Moreover, in certain instances the electronic device is supported by a portion of the hole's perimeter supporting the grip or a securing mechanism holding the grip inside the hole.