Certification Introduction
The Wireless Power Consortium (referred to as the WPC Consortium) is a cooperative organization composed of a number of independent companies. The qi standard is an international standard established by WPC for compatible wireless charging cradles. Mobile phones, cameras, remote controls and all electronics with the qi logo will be compatible with all charging docks with the logo.
WPC Wireless Power Consortium
In the current commercial wireless charging field for mobile phones, the qi standard of the WPC Alliance occupies an absolute advantage. As of August, 628 companies around the world have joined qi members, including Apple, Samsung, LG, Haier and other internationally renowned companies.
The "qi" logo belongs to the WPC Alliance. To use this logo on wireless charging products, you must first obtain the authorization of WPC. If it is used without authorization, it will be punished by WPC or face the removal of the product. In addition, after wireless charging products are certified by qi, all indicators meet the requirements of qi standards, which is also a guarantee of the quality of the product itself. Consumers using products that have passed qi certification are obviously safer and more reliable than those that have not passed.
To apply for qi certification for a product, the company first needs to register as a WPC member and pay membership fees. Members include small business members, ordinary members, fully qualified members and founding members. Different members pay different membership fees and obtain different rights.
After the company applies to become a WPC member and pays the annual fee, it can apply for the authorization to use the "qi" logo, and send the corresponding documents of the company to the qi headquarters. After the approval, the authorization can be obtained.
At the same time as being authorized, you can prepare 5 functional prototypes (select wireless charging solutions that can pass qi certification, such as NXP, Xuxinsheng, Lingyang, Yichong, etc.) and send them to the domestic certification laboratory designated by WPC, such as Anzheng , SGS, Precise, etc., and then the solution company and the customer fill in the corresponding product model, WPC member name and certification type. The certified products are divided into two types: BPP (Baseline Power Profile) and EPP (Extended Power Profile) according to different load power. BPP covers products with output power less than or equal to 5W, and EPP includes products with output power greater than 5W up to 30W. After that, pay the test fee. The domestic certification laboratory generally charges 25,000-30,000 yuan for BPP certification, and about 150,000 yuan for EPP certification.
QI test content
1. Compliance test
ATL (Authorized Test Lab), conformity testing laboratory, currently has many choices in China. One of the at least 5 prototypes sent for testing will first be arranged for conformity testing, and the conformity test samples will be retained after the test is passed. ATL. The main test contents include:
A. The timing of the communication protocol between the transmitter and the receiver;
B. Test the power output capability through the translation of the XYZ axis;
C. The maximum supply capacity of energy transmission;
D. Foreign Object Detection FOD (Foreign Object Detection)
2. Compatibility test
There are only two IOC (Interoperability Test Center) in the world, namely Belgium in Europe and South Korea in Asia.
After passing the compliance test, ATL will divide the other four samples into two groups and send them to laboratories in Belgium and South Korea for compatibility testing projects. The two samples are kept in the main IOC laboratory, and the other Two remain in the secondary IOC laboratory. After the compatibility test of the IOC laboratory is completed, the inspecting party can perform the action of "confirming completion" on the official website, and the product will be included in the WPC official website. Enter the product ID number on the official website to query, and the tested product will be retained. On the Test Bed.
According to the requirements of WPC, all test samples need to be tested for compatibility with all previously certified samples. For example, if the tested product is a wireless charging transmitter, then it needs to be tested with all Qi-certified receivers (including mobile phones) of WPC. Compatibility testing. According to the Qi test process, the submitted product must be sent for compatibility testing after the compliance test is passed. If the compatibility test fails, the sample needs to be brought back for rectification. After the rectification, it cannot be directly sent for compatibility testing, but needs to be re-tested for compliance testing and compatibility testing.
The cycle of QI certification
Calculated according to the normal test time, if there are no failed items in the test product, it will take 4-5 weeks to pass all the test items at one time, plus some turnaround time, etc., so the general certification cycle is 1.5-2 months or so.
According to WPC data, taking November, the peak period of certification in 2017 as an example, a total of nearly 30% of the submitted products failed the first compatibility test, while the samples tested by EPP had a first failure rate as high as 61.5%, even the BPP test, which is now relatively common, still has a failure rate of close to 20%.
Therefore, choosing an appropriate solution before product development is of great help for subsequent certification. The Xuxinsheng wireless charging solution has been continuously updated and optimized, and the current BPP certification pass rate has been greatly improved.