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A battery, terminal and charging system

A battery charging and battery discharging technology, applied in battery overcharge protection, battery disconnect circuit, battery circuit device, etc., can solve problems such as user inconvenience, overcurrent protection original heating, lithium battery safety issues, etc.

Active Publication Date: 2019-07-09
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In a large current scenario, for example, when using a 40W power fast charging method (for example, 9V4.4A, 5V8A), the charging current exceeds 4A or even reaches 8A, and such a large current passing through the overcurrent protection element will cause a large heat loss , resulting in severe heating of the overcurrent protection element, which may cause safety issues for lithium batteries and cause inconvenience to users

Method used

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  • A battery, terminal and charging system
  • A battery, terminal and charging system
  • A battery, terminal and charging system

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Embodiment Construction

[0104] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0105] With the development of science and technology, the functions of terminals (such as smart phones, wearable devices, tablet computers and other electronic devices) have become more and more powerful. Users can use terminals for office and entertainment, so that terminals have become indispensable in people's daily life. missing part. However, the battery life of the terminal is limited, and the user needs to charge the terminal continuously.

[0106] ...

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Abstract

The technical solution of the present invention provides a battery, a terminal and a charging system. The battery includes a battery charging port, a battery discharging port, a battery negative port, an overcurrent protection element, a protection integrated circuit, a control switch, and a battery cell; wherein, the battery charging port is connected to the positive pole of the battery cell; the control A switch is connected in series between the negative pole of the battery cell and the negative terminal of the battery; wherein, the protection integrated circuit is connected in parallel at both ends of the battery cell; the protection integrated circuit is also connected to the control switch for sending a control signal to the control switch; in addition, the overcurrent protection element is connected in series between the battery discharge port and the positive pole of the cell. The battery provided by the invention has dual paths of charging and discharging, and can charge the battery with a large current without causing severe heating of the overcurrent protection element; furthermore, current overload detection can also be performed for discharging.

Description

technical field [0001] The invention relates to charging technology, in particular to a battery, a terminal and a charging system. Background technique [0002] With the development of science and technology, the function of the terminal becomes more and more powerful, and the user can use the terminal for office work and entertainment, so that the terminal has become an indispensable part of people's daily life. However, the battery life of the terminal is limited, and the user needs to charge the terminal continuously. [0003] It should be pointed out that currently terminals are usually equipped with lithium-ion batteries. When using lithium-ion batteries, a protection circuit is required to effectively monitor the charging and discharging status of lithium-ion batteries and shut down the charging under unsafe conditions. The discharge circuit prevents damage to the lithium-ion battery in advance. In addition to the above-mentioned lithium-ion battery structural design...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
CPCH02J7/0031H02J7/00309H02J7/00306H02J7/00304H02J7/00308H02J7/00302H02J7/34Y02E60/10H02J7/0045H01M2010/4271H01M10/46H01M10/425H02J7/0029
Inventor 刘新宇王平华刘策刘彦丁马金博
Owner HUAWEI TECH CO LTD
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