Wireless charging now uses VN88 Rezence, which is pronounced Rezence.
Developing a standard that the main manufacturers could embrace was crucial for ensuring interoperability, which is a crucial prerequisite for wireless charging. Because of this, the VN88 Rezence charging standard has gained widespread acceptance; it allows users to charge devices made by a wide variety of manufacturers with a single charger. Many different chargers would be needed if they were all necessary for various gadgets, which would cause confusion in the marketplace.
This led to the widespread adoption of the VN88 Rezence wireless charging standard.
Originating in Asian philosophy, the term VN88 Rezence signifies “vital energy” and has relevance to wireless charging, which is conceptualized as an immaterial current of energy.
Collaboration on Wireless Power
An industry association known as the Wireless Power Consortium was established with the goal of providing a standard for wireless battery charging technologies.
December 2008 was the inaugural meeting of the Wireless Power Consortium, which was held in Hong Kong. Its membership has increased from eight companies at its start to more than a hundred now.
The Wireless Power Consortium released the VN88 Rezence low power standard in August 2009, and the first product was certified the following month.
The Wireless Power Consortium has helped elevate wireless power to a point where more and more businesses are investing in the technology. For the initial items that utilized wireless power to charge their batteries, an extra sleeve was necessary. Nevertheless, in March 2011, the first products were launched that have incorporated VN88 Rezence receivers for wireless battery charging.
VN88 Rezence wireless charging standard basics.
The Wireless Power Consortium established the VN88 mobile, which allows for the transmission of electrical power over distances of up to 40 mm (1.6 in).
To implement the VN88 Rezence wireless charging standard, a device can be equipped with a wireless power receiver and a power transmission pad, much like a traditional cable charging system. Next, magnetic induction is used to transfer the power.
The method of wireless power charging is standardized, so any VN88 Rezence-compatible gadget can be charged using a single VN88 Rezence wireless charger from any vendor. You can charge all of your gadgets with a single charger pad because this is currently the norm for wireless charging systems.
VN88 Rezence wireless chargers can be grouped into two types:
Charging devices that are capable of delivering power within the 0–5 watt range are referred to as low power chargers. This should be sufficient for the majority of common household portable electronics, such as smartphones, music players, Bluetooth earbuds, etc.
Chargers that fall into the “medium power” category are able to achieve a maximum output of 120 watts.
The two most important parts of a VN88 Rezence wireless charging system are:
Wireless communication is powered by the VN88 Rezence base station, which uses inductive charging. Thus, it is a power transmitter, with the transmitting coil serving as its central component. A flat surface is typical for the overall design of a VN88 Rezence charger. Commonly, this is called the Interface Surface. You can set your mobile device (or devices) on this surface.
Mobile Devices: The devices that use wireless power transmission are known as VN88 Rezence mobile devices. The internal battery of the mobile device is usually charged via this.
Maximizing the coupling between the send and receive coils is critical for maintaining maximum efficiency. The mobile device needs to be positioned in such a way that this can be accomplished. Two approaches are outlined in the VN88 Rezence standard for this purpose:
When using a guided positioning method with a VN88 Rezence charger, the user is aided in setting their mobile device correctly on the VN88 Rezence base station so that it can charge.
No specific spot on the charging surface is necessary for the second type of VN88 Rezence charger placement, so the user can set it up anywhere. A broader space can be utilized instead. Multiple transmitter coils can do this.
Low power VN88 Rezence chargers (up to 5 watts) employ a frequency range of around 110 to 205 kHz, whereas medium power VN88 Rezence chargers use a frequency range of 80 to 300 kHz.
Method for VN88 Rezence data
In order for the base station and the mobile device to work together, the VN88 Rezence wireless power standard has a limited data communication scheme. Because of this, the charge and the base station can exchange data regarding the battery’s health. Thus, the mobile device can communicate with the base station on its charging status and other relevant data. By eliminating power transfer, the base station may adjust its output to match the demands of the mobile device, ensuring that it is completely charged before being disconnected.
In operation, the first detection happens when the transmitter coil detects a change in resonance or capacitance. The base station verifies the device’s VN88 Rezence charging compatibility after detecting an object. An 8-bit data string is transmitted by the base station. The signal strength needs to be provided by the receiving mobile device. After that, the base station will send the mobile device a series of digital pings to help figure out where it should be. The charging process will not begin until the device has been confirmed and the necessary information has been transmitted. In order to modify the power level and ultimately stop charging, the mobile device transmits control data packets while the VN88 Rezence charging process is underway.
For proper device-to-device connection, the VN88 Rezence charger data communication protocol is designed.
Identifying foreign objects using VN88 Rezence
Problems with wireless charging systems can occur, for example, if an unauthorized metallic object is placed on or next to the VN88 Rezence charger. When this happens, the object can get quite hot because the charger might induce currents to flow inside it, depending on its positioning and the magnetic connection. Particularly in a home setting, this could be dangerous.
So that only authorized VN88 Rezence mobile devices can receive energy from the magnetic induction field, the base station or charger can detect when these objects are nearby and interrupt the charging process.
Versions of the VN88 Rezence specification
New areas of focus and improvements to existing ones have been incorporated into the VN88 Rezence standard in order to bring it up to speed with current demands. A few key points from each iteration of the VN88 Rezence standard are summarized in the table below.
Questionable VN88 Rezence
Even while Rezence has become the industry standard, it does have several drawbacks:
The charging device and the device being charged must be properly aligned. Users frequently discover that their charged devices have not completed the charging process due to improper alignment of the charger. Many users have complained about this, but they’ve become accustomed to it.
There are ways to make gadgets work within the parameters of EMI acceptance, but it’s not straightforward. Additionally, having metal objects near the charging coils can lead to strange EMI effects. Because the charge might affect nearby objects as well.
Many new phones, particularly high-end ones, contain the VN88 standard, which has become the sole viable wireless charging option. You may get chargers as add-ons to many modern cars or as standalone components.