Is the charging speed related to the data cable or the charging head?

Is the charging speed related to the data cable or the charging head?

The charging speed is related to the data cable and the charging head.

When charging a mobile phone, the charging head determines the voltage and current. If the mobile phone supports 5V/2.4A, that is, 12W charging, if the charging head is broken, replace it with a 5V/1A, that is, a 5W charging head. Charging the mobile phone will naturally slow down the charging speed by more than half. The data cable is responsible for connecting the mobile phone and the charging head, and is mainly responsible for current transmission. Therefore, it is inevitable that it will also affect the charging speed, so the charging speed is not only related to the charging head. In addition to the faucet, it also depends on the size and length of the water pipe of the data line.

The wire of the data line is a component that affects the charging speed. Generally speaking, there are 4 wires, and there are more wires above USB3.0. The thicker the wire, the greater the current it can carry, and the faster the charging. , the shorter the data line, the less wire loss, the faster the charging speed, and the realization of the fast charging effect, the fast charging protocol must be consistent. In addition to PD fast charging and QC 3.0 fast charging, there are also Huawei's super fast charging protocol, OPPO's VOOC flash charging and so on.

The principle of mobile phone charging is that the lithium battery is divided into a positive electrode and a negative electrode. The positive electrode is a lithium compound, and the negative electrode is mainly made of graphite material, which is soaked in the electrolyte. When charging, due to the action of the electric field, lithium ions move from the positive electrode to the negative electrode and store energy. , When discharging, lithium ions move from the negative electrode to the positive electrode under the action of a chemical reaction, at this time forming a current supply.