Lithium battery charge and discharge loop and lithium battery

Abstract

The present invention discloses a lithium battery charge and discharge loop and a lithium battery. The lithium battery charge and discharge loop is connected with a cell, and comprises a charging loop, a discharging loop and a lithium battery control protection IC; the charging loop is connected with the cell; the discharging loop is connected with the cell; the lithium battery control protectionIC is connected with the cell, the charging loop and the discharging loop; and the lithium battery control protection IC is configured to detect a voltage of the cell and currents of the charging loopand the discharging loop and control disconnection or connection of the charging loop and the discharging loop according to a detection result. The lithium battery charge and discharge loop comprisesan independent charging loop and discharging loop, when charging and discharging are performed, generated heat is lower to allow a lithium battery to be more suitable for rapid charging, and a charging port and a discharging port are mutually independent to allow design and layout of a product circuit to be more flexible.

Description

technical field [0001] The invention relates to the field of built-in lithium batteries of mobile phones, in particular to a lithium battery charging and discharging circuit and the lithium battery. Background technique [0002] At present, the output port of the built-in lithium battery is mostly in the form of a flexible board plus a connector or a wire plus a connector, and there is only one port; charging and discharging are the same circuit, and the charging MOS and discharging MOS are connected in series for charging and discharging. in the loop. [0003] However, most mobile phone products currently hope that the battery can be charged quickly (as much as possible in a short period of time); the charging current needs to be increased. With the increase of the current, the temperature of the MOS and the port will increase significantly, which is very It is easy to overheat when the mobile phone is charging. High temperature has a great impact on the battery and there ...

AI Technical Summary

Problems solved by technology

[0003] However, most mobile phone products currently hope that the battery can be charged quickly (as much as possible in a short period of time); the charging current needs to be increased, and the temperature of the MOS and the port will increase significantly with the increase of the current, which is very It is prone to overheating when the mobile phone is charging, high temperature has a great impact on the battery, and there is a risk of explosion

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