With the continuous progress of automotive technology, the wireless charging function of mobile phones has gradually been applied and popularized in cars, from millions of luxury cars to 100,000 yuan entry models, most of which are equipped with this function. Compared with the traditional charging method of connecting in the past, the biggest advantage of on-board wireless charging is that the adaptation rate is high, and mobile phones that support the Qi wireless charging protocol can be charged, so you don't have to carry all kinds of charging cables when you go out when driving, which can effectively avoid the clutter of the lines in the car. So for different brands and models at different price points, is the actual use of the wireless charging function consistent?This time, we will conduct wireless charging performance tests for 10 popular models with different price points launched in the past year, covering new EV manufacturers and traditional car companies, and find answers through the comparison of test results.
1. Test equipment and process
In order to simulate the real usage environment, we used the Apple iPhone 13 Pro and Huawei P50 Pro as fixed test machines. During the test, the charging efficiency of the two mobile phones was tested by first draining the battery and then placing them on the car wireless charging pad for 15 minutes. After charging, the backs of both phones were measured using an infrared thermometer to test the heat generated by the body.
2. Analysis of test results
1. Comparison of charging amounts
The BMW i7, NIO ET5T, Navy S7 and Lotus ELITRE S+ all support Apple's fast charging protocol, so the test results for the Apple iPhone 13 Pro are satisfactory, with a charging capacity of 10% or more in 15 minutes, and the charging efficiency of some models is even higher than that of using a wireless charger directly. In contrast, the Geely Galaxy L7 is less friendly to the Apple iPhone 13 Pro, charging only 5% in 15 minutes, and its test score ranks at the bottom of the comparison model.
In the test for Huawei P50 Pro, NIO ET5T, VOYAH FREE, Deep Blue S7 and VOYAH Light Chasing all support Huawei's fast charging protocol, so the charging capacity in 15 minutes also exceeded 10%. Among them, the charging capacity of NIO ET5T reached 25%, while the VOYAH chasing light was as high as 32%, and the test results were significantly higher than those of other test models. In fact, both models' wireless charging pads support 50W fast charging, but it's clear that the actual performance of the VOYAH is better. It can be seen that even if the hardware parameters are the same, there may still be differences in actual performance. In comparison, the Land Rover Defender and Lotus Eletre S+ combined for the bottom of the test, charging at just 6%.
Overall, the NIO ET5T and Deep Blue S7, which are supported by both Apple and Huawei fast charging protocols, performed eye-catching in this test session, reaching or exceeding 10% after charging the Apple iPhone 13 Pro and Huawei P50 Pro for 15 minutes. The comprehensive performance of Geely Galaxy L7, JAC Yttrium 3, Land Rover Defender and Beijing Benz GLC is slightly inferior to other test models, and in the charging test link, it is not very friendly to Apple iPhone 13 Pro and Huawei P50 Pro, which shows that the wireless charging function of these four models does not support any fast charging protocol.
2. Comparison of mobile phone calorific value
In terms of body heat, when charging the Apple iPhone 13 Pro, there are four models with a temperature difference of more than 10 degrees Celsius, namely the BMW i7, NIO ET5T, JAC Yttrium 3, and Lotus Eletre S+. Among them, the temperature difference between JAC yttrium and 3 before and after charging is as high as 182 degrees Celsius, but the actual charging efficiency is not high, and the results are somewhat surprising. It is worth mentioning that Beijing Benz GLC has excellent temperature control during the use of wireless charging, and the temperature difference before and after charging the mobile phone is only 13 degrees Celsius, significantly better than other test models.
When charging the Huawei P50 Pro, there are three models with a temperature difference of more than 10 degrees Celsius, namely the VOYAH Free, the Deep Blue S7, and the VOYAH Chasing Light. In particular, the temperature of the VOYAH FREE and the dark blue S7 after charging exceeds 40 degrees Celsius, and the hot feeling is more obvious. In contrast, the Beijing Benz GLC performed eye-catching in this test session, with the temperature difference before and after charging the phone being less than 1 degree Celsius, and the temperature difference before and after charging was almost imperceptible. In addition, the Geely Galaxy L7 also has a remarkable performance in controlling the charging temperature of mobile phones, and the difference between charging and before and after charging is controlled within 2 degrees Celsius.
Overall, the Geely Galaxy L7 and Beijing Benz GLC performed well in this test session, and the temperature difference was controlled at a relatively low level for both Apple iPhone 13 Pro and Huawei P50 Pro charging. In contrast, while the BMW i7, NIO ET5T, JAC Yttrium 3, and Lotus Eletre S+ have excellent temperature control for the Huawei P50 Pro, the performance is relatively average when switched to the Apple iPhone 13 Pro.
3. Comparison of wireless charging functions
In the comparison of wireless charging functions, it can be found that 8 out of 10 models have wireless charging functions that can be manually turned off. It is a pity that the wireless charging function switch of all models is set in the central control screen, and is not in the first-level menu, which is more cumbersome to operate when in use, and if it is equipped with independent physical buttons or designed in the first-level menu, the operation will be more convenient and fast.
Summary:
In terms of actual measurement, among the 10 models participating in the test and comparison, there are no models with perfect comprehensive performance, and there is more or less room for improvement. Although the NIO ET5T and Navy S7 charge more than 10% of both phones in 15 minutes, the heat is not well controlled, the former is the Apple iPhone 13 Pro, the latter is the Huawei P50 Pro, and the temperature difference before and after charging is more than 10 degrees Celsius. The Geely Galaxy L7, Land Rover Defender, and Beijing Benz GLC do a great job of controlling the phone's heat, but the charging efficiency is low, and the wireless charging pads on the latter two models do not support manual shutdown. Through testing, we also found that the wireless charging functions of BMW i7, VOYAH FREE, Lotus eletre S+ and VOYAH Chasing Light only support a single fast charging protocol, which will have a certain impact on the charging efficiency of different brands of mobile phones, and the compatibility needs to be improved. In addition, through the test results, it can also be found that although there are many models on the market that claim to support 50W wireless fast charging, there are large differences in charging efficiency in actual use, even if they all support a certain fast charging protocol, the charging efficiency is uneven.