Charging battery, and charging control method and discharging control method thereof

Abstract

The invention discloses a charging battery which is used for powering a portable electronic device. The charging battery comprises a first-class cell and a second-class cell, wherein the charging multiplying power of the first-class cell is higher than that of the second-class cell; the energy density of the second-class cell is higher than that of the first-class cell, and the first-class cell is connected with the second-class cell in parallel. Since the charging battery is provided with the first-class cell with high charging multiplying power, the rapid charging requirement of users can be met; in addition, the charging battery is provided with the second-class cell with high energy density, so that compared with the high-power battery having the cells in identical quantity, the charging battery has higher total energy, the power supply time for the electronic device can be prolonged, and the duration of the electronic device can be further prolonged.

Description

technical field [0001] The invention belongs to the technical field of power supply of electronic equipment, and in particular relates to a rechargeable battery and a charging control method and a discharging control method thereof. Background technique [0002] With the development of science and technology, more and more portable electronic devices (such as notebook computers and tablet computers) appear in people's lives. When a user is on a business trip or going on vacation, it may be necessary to charge the rechargeable battery in the portable electronic device within a short period of time, and then use the electronic device in an environment without external power supply. [0003] The current ultra-fast charging technology provides a high-power battery that can be quickly charged. Generally, the high-power battery can be charged to 80% of its total energy within 15 minutes to 30 minutes by means of a high-power adapter. [0004] However, the energy density of existi...

AI Technical Summary

Problems solved by technology

[0004] However, the energy density of existing high-power batteries that can be quickly charged is low. For example, the energy density of lithium-ion batteries that can achieve 2C rate fast charging generally does not exceed 380Wh / l, while ordinary 0.5C rate rechargeable batteries The energy density of the battery is 480Wh / l-720Wh / l. Under the premise of the same volume, the energy of the high-power battery that can be charged quickly is reduced by 26%-89% compared with the ordinary rechargeable battery.

This shortens the power supply time that the high-power battery can provide, thereby shortening the battery life of the portable electronic device using the high-power battery without an external power supply, thereby reducing the user experience of the user.

[0005] In order to prolong the battery life of the portable electronic device, an ordinary rechargeable battery can be configured for the portable electronic device, but on the one hand, this increases the system cost; The convenience of travel reduces the user experience of users

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