2, the energy consumption is the corresponding ratioIt's larger. At the same time, using the mobile phone for a long time and simulating the operation process for a long time will cause the mobile phone to generate a lot of heat energy, causing the mobile phone to heat up. In addition, the opening and use of communication functions is also one of the reasons why mobile phones are hot. k60 mobile phone heating is not serious.
3, but the conversion efficiency is best at about 80%, the remaining electricity can only be converted into heat, so the heat of wireless charging has been a big problem. High-power wireless chargers also need to be paired with active cooling fans. Apple in wireless charging and PD fast charging, the same, the highest compatibility of the QI protocol, so iPhone can be charged with any wireless charger that supports the QI protocol on the market.
1. Later, major manufacturers added wireless reverse charging technology to mobile phones on the basis of wireless charging. In simple terms, the mobile phone can be charged through a wireless charger, and then through wireless reverse charging, using the mobile phone as a power source to wireless charging another device that can support wireless charging technology, but the disadvantage is that the charging power is relatively small. wirelessCharging technology originated from radio energy transmission technology, which is divided into high-power wireless charging and low-power wireless charging.
2, PCBA is a common integration method in modern electronic products, which solidifies the circuit design on one or more circuit boards, and fixes various semiconductor devices, resistors, capacitors, inductors and other components by welding or other means. In the field of wireless charging, PCBA usually includes the following parts: Control chip: Manages the entire wireless charging process, including voltage regulation, power control, communication and other functions.
3, so wireless charging car is not a new technology,And the terminal of the C-end user of the car does not have the value of promotion. Because even high-power wireless charging, compared with contact wired charging efficiency is still lower; Compared with the high voltage DC fast charge will be worse, charging efficiency is the main obstacle limiting the popularity of this technology.
4, two-way wireless charging is to charge the device wirelessly, and in turn, the device can charge other devices wirelessly. Wireless charging technology comes from radio energy transmission technology, which can be divided into two ways: low-power wireless charging and high-power wireless charging. Low-power wireless charging often uses electromagnetic induction, such as the Qi method of charging mobile phones,Function The power drop after wireless charging ntc , you can track the instantaneous temperature change of wireless charging after wireless charging ntc.
2, wireless charging thermistor has over current protection, over voltage protection, under voltage protection, temperature protection, short circuit protection, foreign body protection, overshoot protection, magnetic field protection and other functions. Especially the temperature protection design, because the magnetic field produces heat after the temperature, when the magnetic field is constantly generated when charging, the temperature will be higher and higher, so there is NTC heat installed in the temperature protectionThe sensor to monitor the protection of this wireless charge is to monitor the temperature around the coil.
3, for high-power wireless charging roads such as new energy buses and new energy load trucks, whether they use constant current or constant voltage charging, due to high charging voltage and large charging flow, a constant power type NTC thermistor can be set at the input voltage entrance of the transmitter. To prevent or weaken the harmful impact of surge current on four MOS tubes, increase the life of MOS tubes and reduce the failure rate during charging.
4, temperature control circuit. The general wireless charging scheme will have temperatureDegree control circuit and NTC thermistor, this function is mainly to prevent the heat generated by the circuit in the process of working too high, burn components, etc., can also control the power components after generating too much heat, reduce the power, thereby reducing the temperature. Selection of heating components.
5, as far as possible to improve your wireless charging conversion efficiency optimize the control algorithm to enhance your heat dissipation effect plus heat sink or air cooling. The general wireless charging scheme will have a temperature control circuit and NTC thermistor, which is mainly to prevent the heat generated by the circuit in the process of working from being too high and burning out the elementDevices, etc.