Mobile phone hardware is advancing at the speed of Super Moore's Law. The earlier single-core dual-core has evolved into today's eight-core and ten-core, and the progress is very obvious. I thought that this trend is only a matter of time before the mobile phone catches up with the PC, but I did not expect the battery technology to become the biggest stumbling block to hinder its progress.
Compared to the rapid development of mobile phone hardware performance, the advancement of battery technology can be described as "turtle speed." Nowadays, there are two ways for manufacturers to solve their battery life. One is to use large-capacity batteries directly, and the other is to use fast charging technology. Compared with the simple and rude of the former, the latter is obviously more practical. After all, it can be filled with electricity for several hours in ten minutes, which can meet the requirements of the contemporary people for utilizing the fragmentation time. So today, Xiaobian will take a look at the six mobile phone fast charging technologies with you.
I. OPPO VOOC technology
There are two general directions for increasing the charging speed. One is to increase the voltage, and the other is to increase the current. Increasing the voltage will increase the amount of heat generated during the charging process, accelerate the aging of the battery and may pose a safety hazard, so the actual effect is not good. In contrast, increasing the current is much more realistic. VOOC technology uses a low voltage and high current mode to ensure safety during charging.
The actual effect of VOOC fast charging is excellent. The 3000mAh battery can be filled with 75% in 30 minutes, and 10 minutes is enough to charge the 2 hours of call.
The first generation of VOOC chargers was extremely large and there was a risk of breakage at the charging line interface. Fortunately, with the advancement of technology, the second generation VOOC mini charger has been released. Its size is already comparable to the standard USB charger, its portability is extremely high, and its security is perfectly guaranteed. OPPO also introduced VOOC fast charging mobile power, car power supply, etc., providing fast charging service anytime, anywhere. Looking at it now. The biggest drawback of VOOC technology is that it is only suitable for OPPO products, and the compatibility is poor.
Second, Qualcomm Quick Charge 2.0
Qualcomm Quick Charge 2.0 technology is an upgraded version of Quick Charge 1.0 with a new specification. The charging speed is increased by simultaneously increasing the current and voltage. In order to prevent the damage caused by the voltage on the battery, Quick Charge 2.0 has added a special chip. In order to avoid the old version of the phone being burned by excessive current during charging, a special IC judgment switch has been added.
The compatibility of Quick Charge 2.0 technology is excellent, and the technical data shows that it will be promoted to the full range of Snapdragon 400, 600, 800 chips. Considering Qualcomm's huge market share in the mobile phone chip field, the prospect of Quick Charge 2.0 is bright.
Third, MediaTek Pump Express technology
MediaTek's fast charging technology, Pump Express, is built into the PMIC's power management IC. It allows the charger to determine the initial voltage required for charging according to the current. The pulse current command sent by the PMIC is transmitted to the charger through the USB Vbus. The charger adjusts the output voltage according to this command, and the voltage gradually increases up to 5V to reach the maximum charging current. Pump Express currently has two specifications, one is Pump Express with output power less than 10W, and the other is Pump Express Plus with output power greater than 15W.
At present, in conjunction with MediaTek's fast charging method, Dialog, On-bridge and Tongjia power chip manufacturers have developed a dedicated power management IC for it. It does not need to use the USB data communication port, the line is simple, and the architecture is At present, the traditional USB charger is almost the same, and the cost is also low, which is very suitable for promotion in low-end and mid-range mobile phones.
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