Battery Cover Using Antenna Power Coupling Without Size Increase
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Solution Overview
Problem
Modern mobile devices face limited battery life due to high power consumption by processors, and existing battery covers that extend the device's size by connecting to the power connector are inconvenient, especially when the device is carried in a pocket.
Innovation Solution
A removable cover with a battery and an electrical contacting element that uses the mobile device's external antenna to provide power, employing a blocking filter to separate RF signals from DC power, allowing compact power extension without increasing the device's length or width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a battery cover is connected to the power connector to extend battery life, then the battery life is extended, but the device size increases on the side with the power connector
Solution Approach 1:
The invention extracts the power connector function from the battery cover connection, allowing the battery cover to connect to the antenna instead. This removes the need for the battery cover to extend the device lengthwise at the connector location, while still providing power extension capability through the antenna interface.
Solution Approach 2:
The antenna is given multiple functions: it serves both as a radio frequency communication antenna and as a power transmission interface for the battery cover. This multi-functionality eliminates the need for separate power connector extension, maintaining compact device dimensions while enabling battery life extension.
2Duration of action of moving object
If a battery cover is connected to the power connector to extend battery life, then the battery life is extended, but the device surface area increases
Solution Approach 1:
The power connection function is extracted from the traditional power connector location and relocated to the antenna interface. This allows the battery cover to connect without increasing the device's length or width, maintaining the original device surface area footprint while still providing extended power capacity.
Solution Approach 2:
Instead of extending the device in the horizontal dimension (length/width) to accommodate a power connector connection, the solution moves the connection interface to a different dimension - utilizing the antenna interface which allows vertical stacking without increasing the device's horizontal footprint.
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 provides additional power to mobile devices in a compact form that does not obstruct the power connector, maintaining the device's size while extending battery life without enlarging its surface area.
Implementation Method 1
a blocking filter, which is coupled between the electrical contacting element and the battery and which is configured to block RF signals from the electrical contacting element to the battery and to allow transmission of the electrical supply power between the battery and the electrical contacting element
Implementation Method 2
a filter, which is configured to block dc power received via the antenna from entering the RF circuitry and to allow transmission of the dc power between the antenna and energy consuming elements of the mobile device
Data Source
AI summary
The present invention provides a cover (201, 220, 230) for removably attaching to a mobile device (101, 117) with an antenna (118), comprising a battery (204), which is configured to provide electrical supply power, an electrical contacting element (205, 206, 211), which is configured to electrically couple the battery (204) to the antenna (118) of the mobile device (101, 117), and a blocking filter (207), which is coupled between the electrical contacting element (205, 206, 211) and the battery (204) and which is configured to block RF signals from the electrical contacting element (205, 206, 211) to the battery (204) and to allow transmission of the electrical supply power between the battery (204) and the electrical contacting element (205, 206, 211). Further, the present invention provides a corresponding mobile device (101, 117) and a corresponding method.