Testing equipment and method for wireless charging receiver

Abstract

The invention provides testing equipment for a wireless charging receiver, which is reliable and stable, high in energy efficiency, low in error rate, small in heating value and simple in debugging, and a testing method of the equipment. The testing equipment comprises a wireless charging receiving end (1), a power supply (2), a micro-processing controller (3), a signal generator (4), a power amplifier (5) and an ASK signal sampling and processing module (6); the micro-processing controller (3), the signal generator (4) and the power amplifier (5) are sequentially connected, and the power amplifier (5) is directly coupled with the wireless charging receiving end (1); the testing method comprises the steps of signal modulation, power amplification, PWM signal output, direct coupling and inputting to the wireless charging receiving end, establishment of a communication between a charging device and the wireless charging receiver, setting of current and voltage values by the ASK signal sampling and processing module (6) and obtaining electric parameter information of the wireless charger. The testing equipment and method in the invention can be applied to the field of testing.

Description

technical field [0001] The invention relates to the field of testing, in particular to a testing device and a testing method for a wireless charging receiver. Background technique [0002] New energy products and mobile terminal products have become very popular today with scientific progress. While enjoying the convenience of technology, the use of batteries on mobile terminal products has become very important. Charging is the key to ensuring battery life and stable product use. links. At present, the charging methods of portable products mainly include external power adapter, solar conversion charging and wireless connection charging, among which wireless charging is the most free and convenient application. With the continuous improvement of research and development technology, wireless charging has begun to slowly enter the mature market, and the application of wireless charging products in various fields is also gradually promoted and popularized. The board test and w...

AI Technical Summary

Problems solved by technology

[0004] 1. The current charging equipment test method needs to be completed by coil coupling, so that the charging equipment terminal and the charging receiving terminal under test must have a set of primary transmitting coils and energy receiving terminals of the energy output terminal (the circuit board under test) Composed of secondary coils, relying on coil coupling for charging, communication testing will have problems such as low efficiency, easy data packet loss, and poor anti-interference ability

[0005] 2. Due to the low energy conversion efficiency, long-term work will cause serious heat generation and test instability, which will eventually cause thermal drift in the test and inaccurate test data, which will easily lead to misjudgment, missed judgment, and wrong judgment of the test results. It is not conducive to the development and production of products (wireless charging receivers)

Especially in the high current test, due to the loss caused by coil coupling, the noise of ASK (amplitude shift keying) and FSK (frequency shift keying) can easily destroy the integrity of the data

[0006] 3. Because the coil coupling is affected by variable factors such as air gap, material, and relative position of the primary and secondary coils, the difference between devices will be very large, so that the same circuit board under test will appear and be tested on two devices different data, which is greatly detrimental to the promotion of product quality monitoring and standardization

[0007] 4. The equipment debugging period is long and the debugging cost is high. During the debugging process, standard equipment such as LCR tester (inductance capacitance resistance tester) and DMM (digital multimeter) should be used. Such difficult debugging also greatly increases maintenance costs

[0008] 5. There is a large current impact and heat caused by energy efficiency, the test equipment is easily damaged, the failure rate is high, and the service life is short

Images