The resistance value of the inductor under test is zero, and there is a short-circuit fault in it. The size of the DC resistance value of the inductor under test is directly related to the enamelled wire diameter and the number of coils wound. As long as the resistance value can be measured, it can be considered that the inductor under test is normal. Note: Test if required>
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 look at the charge firstHow much is the power of the electrical appliance W, how much is the output current, and then how much mah the battery capacity of the mobile phone, 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.
In order to simulate the real use environment, we use Apple iPhone 13 Pro and Huawei P50 Pro as two fixed test machines. During the test, the power of the two mobile phones is first exhausted, and then they are respectively placed on the wireless charging board of the car for 15 minutes to test their charging efficiency. After charging, use the infrared thermometer to pair the two handsThe back of the machine is measured to test the heat generation of the fuselage. In summary, Keysight E4980A/AL precision LCR table with its high precision, wide impedance range, fast measurement and multi-fixture selection, has become the ideal choice for wireless charging system coil test, to ensure the high efficiency and high reliability of the system provides a strong support.
Plug the wireless charger into the power supply and check that the wireless charger is working properly. 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. Put the iPhoneOn the wireless charger, watch to see if the phone 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.
Wireless charging coil test is good or bad as follows: test the resistance value of the coil, resistance value within a certain range is a good product. Test the Q value of the coil, the higher the Q value, the better the performance. Test the coil temperature rise, the lower the temperature rise, the better the performance. Test the efficiency of the coil, the higher the efficiency, the better the performance.
1, the new standard of wireless charging: In-depth analysis of the popularity of Qi certification wireless charging technology is inseparable from strong technical standard support. Qi Certification, full name Qi Wireless Charging, is a global Wireless charging standard developed and implemented by the Wireless Power Consortium (WPC).
2, Qi certification: the universal language of Wireless charging industry Qi, the full name of wireless charging alliance (Wireless Power Consor)The work of tium, or WPC, which defines a universal standard for wireless charging. This standard is "convenient" and "universal" as the core, ensuring that different brands of products only need to have the Qi logo, can be seamlessly connected with any QI-compatible wireless charger.
3, QI certification means the standard certification of wireless power supply technology Alliance. QI Certification Overview QI certification is a set of standard certification developed by the Wireless Power Supply Technology Alliance. With the continuous development of wireless technology, wireless charging function has been widely used in mobile devices such as smart phones and tablet computersYes. In order to ensure the wireless charging functionality and security of these devices, WPC has launched the QI certification standard.
4, wireless Qi test includes Compliance Test (Compliance test) and compatibility test (Interoperability Test), compliance test by the ATL (Authorized Test Lab), send 5 samples.
5, Qi certification refers to the certification of wireless charging standards formulated by the Wireless Charging Alliance (WPC). Wireless Charging AllianceThe WPC is a global organization dedicated to developing and promoting standards for wireless charging technology. The wireless charging standard developed by the organization is called the Qi standard, and any charger with the Qi logo can wireless charge any rechargeable device that meets the Qi standard.
Wireless charging Qi certification test content includes Compliance test (Compliance test) and compatibility test (Interoperab)ility Test). The compliance Test was conducted by the Authorized Test Lab (ATL) with 5 samples.
The main test contents include: 1) timing of the communication protocol between the transmitter and the receiver; 2) Test the power output capability through the translation of the XYZ axis; 3) The maximum supply capacity of energy transmission; 4) Foreign Object Detection (FOD). Compatibility testing.
Wireless charging Qi certification content: including compliance testing (Compliance test and Interoperability Test. The compliance Test was conducted by the Authorized Test Lab (ATL) with 5 samples.
Wireless charging Qi certification test includes: Compliance Test (Compliance test) and compatibility test (Interoperability Test). Authorized Test L (ATL)ab) Carried out, 5 samples were sent for testing.
QI certification mainly covers the evaluation of the performance, compatibility, security and other aspects of wireless chargers and receivers. 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.
Qi certification testing content Detailed Qi certification testing content is rigorous and comprehensive, mainly including: transmitter and receiver communication protocol: to ensure that both sides can be fast, accurate data exchange. Power output and stability: In the XYZ axis translation test, verify the wireless charging capability of the device at different angles. Energy transmission limit: Test the maximum power supply capacity of the equipment to ensure safety performance.