Hi6526 is an integrated circuit specially designed for lithium battery charge management. The charging principle is as follows: 1. Constant current charging: Hi6526 first charges the battery into a certain degree of constant current, when the battery voltage rises, and then uses the DC voltage regulation mode to attenuate the constant current to the battery small current charging state, keep the battery voltage unchanged, and realize the fast charging of the lithium battery.
2. Automatic control termination during charging: Hi6526 can judge the battery condition, and automatically stop charging when the battery voltage reaches a certain level or the battery reaches a full state, avoiding overcharge and overdischarge problems.
3. Temperature protection: Hi6526 also has a temperature protection function, which can collect the battery temperature through the temperature sensor. When the temperature reaches the preset value, the charging can be stopped to protect the lithium battery.
In general, Hi6526 adopts constant current charging and then constant voltage charging, which can improve charging efficiency and charging speed, and has automatic termination and temperature protection functions, saving energy resources and extending the service life of lithium batteries.
Is based on the lithium-ion battery charging mechanism.
Because the lithium-ion battery used by the hi6526 chip, the charging process is to apply a certain voltage and current to the positive electrode of the battery through the external DC power supply, when the battery power reaches a certain degree, the charger stops supplying power to the battery and completes the charging.
Through this mechanism, the hi6526 can be regularly charged to ensure long-term stable use. It should be noted that the charging voltage and current need to be selected according to the different types and parameters of lithium-ion batteries, otherwise it will have an adverse impact on battery life and safety.
HI6526 is a power management chip, and its charging part uses an efficient switching power supply charging scheme, which mainly has the following principles:
1. DC\/DC conversion: Converts the DC voltage of the external power supply to the voltage required by the battery, which can reduce the voltage while ensuring the charging efficiency
It is charged using the characteristics of the REDOX reaction inside the lithium-ion battery.
Specifically, when the battery internal cathode material LiCoO? When lithium ions are released to the negative electrode material graphite, a solid electrolyte film is formed between the surface of the positive electrode material and the electrolyte. There are pores of lithium ions in the membrane. Lithium ions enter the electrolyte through these pores, and then conduct to the negative electrode material through the electrolyte, and finally deposit on the negative electrode material.
This process realizes the charging of hi6526.
It should be noted that in order to protect the battery from being damaged by discharge or overcharging, some specific charge control circuits will also automatically adjust during charging. In addition, slow charging is safer and more reliable than fast charging, which can save charging time.
Therefore, in daily use, it is necessary to make a reasonable choice according to the characteristics of the device and the charging needs.
The charging principle of hi6526 chip is based on the constant current charging method.
Specifically, when the hi6526 chip detects that the battery voltage is lower than the set value, it will make the internal switch tube close, so that the current flows into the battery for charging.
At the same time, the chip can also dynamically adjust the charging current according to the actual capacity of the battery and the current flow into the battery, so as to ensure the safety and efficiency of the charging process.
By extension, compared with other charging methods, constant current charging method has the advantages of high charging efficiency and fast charging speed, which is suitable for the charging needs of most mobile devices.