Battery management module and circuit

Abstract

The invention relates to a battery management module and a circuit. A battery access unit and an electric energy output unit are detachably connected respectively and flexible to use, and can be externally used so as to adapt different using requirements; a unidirectional switch unit is used for controlling the battery access unit and the electric energy output unit to carry out positive conduction, negative conduction or disconnection so as to realize charging and discharging for a battery and energy conservation; a battery protecting and electric quantity calculating unit is used for carrying out overcharge protection and overheat protection on the battery, carrying out calculation on the electric quantity of the battery and detecting the state of the battery, the temperature and voltageof the battery are detected, the service life of the battery is prolonged, and the safety of the battery is improved; after the battery protecting and electric quantity calculating unit is used for controlling the unidirectional switch unit to carry out positive conduction after the battery is detected to meet normal working state so that electric energy of the battery is transmitted to the electric energy output unit, and power supply output is realized; charge management for the battery of a mobile terminal is realized, the electric energy of the battery is controlled to be output accordingto the state of the battery so as to realize energy conservation, and the circuit is simple.

Description

technical field [0001] The invention belongs to the technical field of battery management of mobile terminals, and in particular relates to a battery management module and a circuit. Background technique [0002] Notebooks and mobile phones are commonly used electronic devices in daily life. The most familiar ones are the battery level indicator and charging reminder function. However, there are extremely complicated working protocols behind such a simple application; The system layer and the underlying hardware EC (Embedded Controller) have formed a fixed set of protocols over the years, using the EC common SMBUS (System Management Bus) bus to access the address of the fuel gauge on the battery module, so as to obtain power data for Report the operating system to complete the power indication and battery management; in terms of hardware design architecture, a relatively fixed design architecture is adopted, charging management and EC (embedded controller) are designed on th...

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Problems solved by technology

[0003] Although the traditional architecture mentioned above has been used until now, the design threshold is relatively high, the cost of custom design is very high, and the research and development cycle is relatively long. Due to the development of science and technology, new applications emerge in an endless stream, and the traditional architecture is very suitable for new applications. Inflexible; in practical applications, except for notebook motherboards, most motherboards are not designed with battery management and power indicators. When new applications are produced, many times they have to choose The external modules are patched together, and the user experience of the final product is poor. The battery indicator cannot be connected with the system protocol, so it only makes a simple external indicator. Ordinary motherboards do not have perfect battery management, resulting in too short battery discharge time. Even batteries are prone to various safety hazards

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