1, QI certification mainly covers the wireless charger and receiver performance, compatibility, security and other aspects of the evaluation. Qi-certified wireless chargers can provide a stable power supply for devices that support the QI standard, while ensuring the safety of the device during the charging process. In addition, QI certification also involves the verification of communication protocols between devices to ensure good interoperability between devices.
2, Qi Certification Overview Qi is developed by the Wireless Charging Alliance (WPC)Wireless charging standard. The statement on the Internet about the "Apple Qi certification" actually refers to the Apple phone to obtain the Qi certification mark, must pass the Qi certification process. Attention should be paid to distinguishing between related concepts. Qi certification Type Qi certification is divided into the following three types: - Qi-BPP certification: The product supports less than 5W power, using the Qi protocol, must pass the BPP certification.
3, wireless charging Qi certification content: including Compliance test and Interoperability Test. conformance>Work often. If the wireless charger does not work properly, you can try to replace the charger or check whether the cable of the charger is damaged. Place your iPhone on a wireless charger and watch to see if it starts charging. If the phone does not start charging, you can try adjusting the position of the phone or repositioning the phone. Check whether wireless charging is enabled on your phone.
Next is the charging operation. Gently place the back of your Apple device in the center of the wireless charger, eliminating the need for precise alignment. A charging icon may appear on the device screen, or you can confirm whether to start charging by looking at the battery status of the deviceElectricity. During the charging process, you can use the device normally, such as viewing messages, browsing the web, etc., but be careful not to move the device too much, so as not to interrupt the charging connection.
A receiving/transmitting coil is arranged at both ends of the mobile phone and the wireless charger. The current of the wireless charger generates a magnetic field through the coil at the transmitting end. When the coil at the receiving end of the mobile phone is close to the magnetic field, the current will be generated. Well, it's a bit of a headache to look at this principle.
Confirm whether the phone supports wireless charging, select "General" in the Settings"About this machine", check whether the device model supports wireless charging at the bottom of the page. Select a compatible wireless charger and ensure that the charger is compliant with the Qi wireless charging standard. Select "Battery" in the Settings, check whether the "Wireless charging" option is enabled in the "Battery" page, if it is not enabled, click to enable it.
1, wireless charging Qi certification test content includes Compliance test (Compliance test) andInteroperability Test. The compliance Test was conducted by the Authorized Test Lab (ATL) with 5 samples.
2, the compliance test includes the communication protocol between the transmitter and the receiver, the ability to move on the XYZ axis test, the energy transmission ability, foreign body detection and other aspects. Compatibility testing ensures that each QI-certified device and charger works together, supports products from different manufacturers, and is compatible with products under the Qi standard. Pass both testsOur products ensure a safe and reliable wireless charging experience.
3, QI certification mainly covers the wireless charger and receiver performance, compatibility, security and other aspects of the evaluation. Qi-certified wireless chargers can provide a stable power supply for devices that support the QI standard, while ensuring the safety of the device during the charging process. In addition, QI certification also involves the verification of communication protocols between devices to ensure good interoperability between devices.
4, wireless charging Qi certification content: including Compliance test (Compliance test) and compatibilityThe Interoperability Test. The compliance Test was conducted by the Authorized Test Lab (ATL) with 5 samples.
When conducting wireless charging efficiency tests, we need several main tools and equipment. The first is a wireless charging pad for testing, which needs to be able to support all the major charging protocols, such as Qi, AirFuel, and PMA. In addition, an ammeter is required, and its main function is to test the current consumed by the wireless charging pad when charging. When testing, we need to first decide which phone to test.
You first look at the power of the charger is how much W, how much output current is, and then how much mah cell phone battery capacity, capacity = current * time, see how much difference between the theoretical charging time and the actual charging time is calculated, you can roughly get the efficiency.
Products that pass these two tests ensure a safe and reliable wireless charging experience. The testing process for Qi certification includes several itemsSpecific standards and stringent requirements covering testing for safety, interoperability and energy efficiency ensure that each device and charger works together and is compatible with multiple devices.
Test with a wireless charger, which is the simplest and most direct method, put the phone on the wireless charger, if the charging is displayed, it means that the wireless charging function is not supported.
Qi certification test process includes a number of specific standards and stringent requirements covering security, interoperability and performanceEfficiency testing to ensure that each device and charger work together and are compatible with multiple devices. This process also includes member registration, Logo license agreement signing, product registration, information filling, Logo authorization review, test implementation, interoperability verification, product information revision and final review, which are included in the WPC product database.
Apply for Qi certification to provide 5 samples, at least 3 sets of test AIDS, product instructions and operating instructions, self-declaration form. The certification process is carried out by a professional QI certification agency, such as North Test New Energy, which has CNAS/CMA qualification provides a full range of one-stop services from certification application to product registration, helping customers easily obtain access to multinational markets, cost-effective, faster cycle.
Qi certification is divided into the following three types: - Qi-BPP certification: The product supports less than 5W power, using the Qi protocol, must pass the BPP certification. - QI-EPP certification: The product supports more than 5W power. If the Qi protocol is used, the product must pass EPP certification. Qi-PPDE certification: Products support more than 5W power, using Samsung private protocol PPDE, must be tested by PPDE (sinceEffective July 1, 2019).
2, thereforeIn the test, the match of the charger, interface line and battery must be considered in order to ensure the accuracy of the charging efficiency. Next, the fast charging efficiency of different mobile phones is evaluated through a test device with a charge control chip. Test equipment will record the battery voltage, current, charging time, charging speed and other key data of each mobile phone, and then comprehensively calculate the charging efficiency of each mobile phone.
3. In the horizontal evaluation, we adopted the following three methods for evaluation. Standby test Standby test is one of the most basic tests to evaluate the performance of a mobile phone battery. The test requires the phone to be kept onOpen the screen and perform various application tests to measure the performance of the phone's power management, such as standby time, battery consumption, etc. For the standby test, we used a test program during the test and set the brightness of the phone to the same standard value.