Quick charging device and quick charging method

Abstract

The invention discloses a quick charging device and a quick charging method. The quick charging device comprises a control module, a first power supply management module, a second power supply management module and a battery; the control module is used for enabling the first power supply management module after the charging is started and charging the battery by using the power supply management module; the control module is used for detecting the charging state of the battery, enabling the second power supply management module when the constant current charging state of the battery is detected, and charging the battery by utilizing the first power supply management module and the second power supply management module. Therefore, the charging current at the constant current charging stage can be increased and the charging time can be shortened. The dual power supply management modules are used for charging the battery in parallel; on one hand, the charging speed is accelerated; and on the other hand, in the quick charging, the charging current can be rationally shared by the two power supply management modules; the maximum charging current of the single power supply management module can be reduced effectively and the local heating problem of a mobile terminal at the power supply management module is solved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a fast charging device and a fast charging method. Background technique [0002] In the prior art, the mobile terminal is usually charged through a power management module to charge the battery. With the emergence and development of fast charging cells, the charging current that the battery itself can support is increasing. Taking a battery with a capacity of 4000mah and a charging rate of 1.5C as an example, if fast charging is performed, the charging current that the battery can support The current is: 4000mah*1.5C=6A. Obviously, it is difficult for a single power management module to achieve such a large charging current, which cannot effectively meet the needs of fast charging. At the same time, when a single power management module is performing a high-current charging operation, the power management module generates serious heat, resulting in local heating problems i...

AI Technical Summary

Problems solved by technology

With the emergence and development of fast charging cells, the charging current that the battery itself can support is increasing. Taking a battery with a capacity of 4000mah and a charging rate of 1.5C as an example, if fast charging is performed, the charging current that the battery can support The current is: 4000mah*1.5C=6A. Obviously, it is difficult for a single power management module to achieve such a large charging current, which cannot effectively meet the needs of fast charging.

At the same time, when a single power management module is performing high-current charging operations, the power management module generates serious heat, which leads to local heating problems in mobile terminals.

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