The Wireless Power Technology Story

 

As data and communications have gone wireless, wireless power is the "last mile of the last wire". It offers a new dimension in the user experience of portable mobile electronics such as mobile phones, tablets, laptops, audio/video players, portable gaming devices, digital cameras and computer peripherals. The user can experience this new convenience not only at home, but also in the office, in the car, in hotels, coffee shop chains and airports. Last but not least, wireless power also unleashes a complete new world of exciting device designs and possible applications with no connectors needed. For example, you can now seal products completely for new waterproof and materials applications.

 

ConvenientPower's revolutionary inductive, resonant, hybrid inductive-resonant wireless power transfer technology is based on a patented vertical magnetic flux technology which differentiates itself through:

 

1. Localised charging in compatible devices- The flux only materializes locally in between the transmitter and the receiver and only for devices recognized by the transmitter;
 
2. Position independent wireless power charging- The receiver can be placed anywhere, in any direction or orientation on the charging surface;
 
3. Wirelessly charging multiple devices at the same charging time as current chargers, across a wide range of voltage and battery requirements;
 
4. Preserving safety of data and devices nearby- credit cards, coins, laptops;
 
5. Meeting major international regulatory radiation and emissions safety standards, such as:
  • CISPR 11 or EN55011 Class B Group 2 Conducted and Radiated Emissions
  • CISPR 22 or EN55022 Class B Conducted and Radiated Emissions
  • FCC Part 15 Class B Conducted and Radiated Emissions
  • CISPR 14 – 2 Immunity – Product Family Standard
  • EN62233:2008 Measurement method for electromagnetic fields of household appliances and similar apparatus with regards to human exposure.
     

As seen below, the lines of vertical flux or energy are transmitted and received by an ultra slim and
small receiver**
which is placed in the portable electronic device. For example, dimensions of the
receiver coil module for a 5-watt electronic device are: 1 x 30 x 30 mm ( Thinness x Length x Width ). The thinnest single coil transmitter module for a 5-watt electronic device is 4.2mm.

 

 
ConvenientPower wireless charging modules powered by our ASIC Chipset CP-SC2 offer the spatial freedom for a revolutionary user experience.
ConvenientPower’s resonant wireless charging technology significantly increases power transfer efficiency when the transmitter and receiver become loosely coupled. Loosely coupled wireless power transfer (LCWPT) is the typical form of wireless power transfer when transmitter and receiver coils are mismatched in size and/or when there is a large distance between the coils. ConvenientPower’s resonant transmitter can work with existing in-the-market WPC v1.0 and v1.1 Qi devices up to 20mm* distance (coil-to-coil) and can charge customized receivers up to 30mm. The resonant transmitter adapts to the resonant condition of the Qi receivers and utilizes a unique resonant matching technique to compensate for the efficiency drop due to loose coupling. System efficiency of 65% is demonstrated when tested with WPC test receivers at the distance of 20mm*. ConvenientPower has also successfully extended this technology into its resonance series 'Tx R2' (ranging resonance) with continuous distance charging coverage from 3mm to 20mm*, and into 'Tx R3' which achieve X/Y/Z spatial freedom.

* Performance depends on type of receiver.