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Battery electric quantity balance control circuit, terminal and battery electric quantity balance control method

A battery power and balance control technology, which is applied in the direction of charge balance circuit, battery circuit device, secondary battery charging/discharging, etc., can solve the problems of large performance difference between two series batteries, short battery life, and low user experience

Inactive Publication Date: 2018-03-30
NUBIA TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a battery power balance control circuit to solve the problem that in the prior art, with the increase of the use time, there is a large performance difference between the two series batteries, which leads to the short service life of the battery and the user The problem of low experience

Method used

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  • Battery electric quantity balance control circuit, terminal and battery electric quantity balance control method
  • Battery electric quantity balance control circuit, terminal and battery electric quantity balance control method
  • Battery electric quantity balance control circuit, terminal and battery electric quantity balance control method

Examples

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no. 1 example

[0078] In order to solve the problem in the existing solution that with the increase of use time, the two batteries have a large performance difference, resulting in a short service life of the battery and poor user experience. This embodiment provides a battery power balance control circuit, see image 3 shown. The battery power balance control circuit is set in the terminal, and the terminal includes a first battery pack and a second battery pack connected in series, the battery power balance control circuit includes a balance controller, and is connected to the first battery pack and the second battery pack respectively The first shunt circuit and the second shunt circuit connected in parallel. Wherein, the equalization controller acquires the real-time voltage difference between the first battery pack and the second battery pack during the charging process of the first battery pack and the second battery pack, and performs the first shunt circuit or the second shunt circu...

no. 2 example

[0125] This embodiment is based on the first embodiment, taking a specific battery power balance control circuit as an example to further illustrate the present invention. For details, please refer to Figure 6 .

[0126] It is assumed that there are a first battery pack and a second battery pack and a two-stage shunt circuit in the terminal, and both the first shunt circuit and the second shunt circuit are two-stage shunt circuits, and are realized by corresponding two-stage shunt sub-circuits; at the same time, the first The range of the voltage difference Q is Q>0.2V, the range of the second voltage difference K is 0.2V>K≥0.1V, the range of the third voltage difference M is 0.1V>M>0V, and the preset voltage difference threshold Y is 0.1V.

[0127] S601: The balance controller receives a battery voltage measurement instruction for indicating that the first battery pack and the second battery pack are ready to be charged.

[0128] S602: The balance controller judges whether...

no. 3 example

[0171] This embodiment also provides a terminal, which includes a first battery pack and a second battery pack connected in series, and also includes the battery power balance control circuit as described in the first embodiment and the second embodiment. Wherein the first shunt circuit and the second shunt circuit are connected in parallel with the first battery pack and the second battery pack respectively; at the same time, the balance controller is used to obtain the first battery pack and the second battery pack during the charging process of the first battery pack and the second battery pack. The real-time voltage difference of the battery pack can also be used to perform real-time shunt control on the first shunt circuit or the second shunt circuit according to the real-time voltage difference, so that the voltages of the first battery pack and the second battery pack tend to be equal during the charging process. For details, see the following description:

[0172] The ...

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PUM

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Abstract

The invention discloses a battery electric quantity balance control circuit, a terminal and a battery electric quantity balance control method. The battery electric quantity balance control circuit isarranged in the terminal; a first battery pack and a second battery pack connected in series are arranged in the terminal; the battery electric quantity balance control circuit comprises a balance controller, and a first shunting circuit and a second shunting circuit connected with the first battery pack and the second battery pack in parallel respectively; and the balance controller obtains thereal-time voltage difference between the first battery pack and the second battery pack in the charging process of the first battery pack and the second battery pack, and performs real-time shunting control on the first shunting circuit or the second shunting circuit according to the real-time voltage difference. The problem of short service life of the battery caused by performance difference ofthe two batteries connected in series along with time in the prior art can be solved. The invention also discloses the terminal and the battery electric quantity balance control method, so that battery service life and user experience are further prolonged and improved.

Description

technical field [0001] The invention relates to the technical field of charging, and more specifically, to a battery power balance control circuit, a terminal and a battery power balance control method. Background technique [0002] With the development of science and technology, smartphones have become the center of personal information, tablets meet everyone's mild entertainment needs such as Internet access, games, and videos, and PCs are responsible for office duties. Although individual products are becoming more and more powerful in function, the boundaries in form are becoming more and more blurred. Digital products are becoming more scene-oriented rather than functional, and large and comprehensive products are being extremely demanded. Due to the large size and high power consumption of the tablet, in order to meet the demand of market use time, the battery capacity is generally more than 35Wh, while the ordinary battery capacity is generally about 18Wh, so two bat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H01M10/44
CPCH01M10/441H02J7/0019H02J7/0077Y02E60/10
Inventor 蒋权
Owner NUBIA TECHNOLOGY CO LTD