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Battery charging system and charging method

A battery charging and rechargeable battery technology, which is applied in the direction of secondary battery charging/discharging, charging and maintenance charging/discharging, battery circuit devices, etc., can solve the problem of high cost of charging system and other issues

Active Publication Date: 2019-02-22
上海芯凌微电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this solution requires an additional heat load
In terms of cost and volume, the cost for the charging system is expensive

Method used

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  • Battery charging system and charging method
  • Battery charging system and charging method
  • Battery charging system and charging method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] figure 1 A schematic circuit diagram of a charging system according to an embodiment of the present invention is shown.

[0068] Such as figure 1 As shown, the charging system includes: a power supply Vsource, a charging management unit and a rechargeable battery BAT, and the power supply Vsource supplies power to the charging management unit; the charging management unit includes a first control module, a second control module, a first power switch K1, and a second power switch K1. The switch tube K2; the power switch tube includes a first terminal, a second terminal, and a third terminal, and the first terminal is used to control the conduction or cut-off of the current between the second terminal and the third terminal; the output terminal OUT1 of the first control module It is connected to the first terminal of the first power switch tube K1, and the input end is connected to the second terminal of the first power switch tube K1 for controlling the first current va...

Embodiment 2

[0070] figure 2 It shows a schematic circuit diagram of a charging system applied in a charging system using a linear charging management chip of a MOS transistor according to an embodiment of the present invention.

[0071] Such as figure 2 As shown, the present invention is applied in a linear charging management chip, the first switching power tube is selected as a PMOS tube, and the second switching power tube is selected as an NMOS tube, including a power supply Vsource, a charging management unit, a rechargeable battery BAT, a first MOS tube M1, and a second switching power tube. Two MOS transistors M2; the drain of the first MOS transistor M1 is connected to the drain of the second MOS transistor M2; the positive pole of the rechargeable battery BAT is connected between the drain of the first MOS transistor M1 and the drain of the second MOS transistor M2 , the negative pole is connected to the negative pole of the power supply Vsource. One end of the first resistor...

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Abstract

The invention discloses a battery charging system and a charging method thereof. The charging system includes a power source, a management unit, and a battery; the management unit includes a first control module, a second control module, a first power switch tube, and a second power switch tube; first terminals of the power switch tubes are used for controlling current conduction between second terminals and third terminals; the first control module is used for controlling a first current value flowing through the first power switch tube; the second control module is used for controlling a second current value flowing through the second power switch tube; and a positive pole of a rechargeable battery is connected between the third terminal of the first power switch tube and the second terminal of the second power switch tube, and an negative electrode is connected to a negative pole of the power source. Through the battery charging system and the charging method thereof, heating of a battery can be achieved when the rechargeable battery cannot be charged at a low temperature, and the battery is normally charged under a normal condition of the battery temperature.

Description

technical field [0001] The present invention relates to the field of integrated circuits, and more specifically, to a battery charging system and charging method. Background technique [0002] Secondary batteries, commonly known as rechargeable batteries, are becoming more and more popular because they can be used repeatedly and do not need to be disassembled. Its circuits for fast and safe charging are in great demand. [0003] Due to the physical and chemical characteristics of the rechargeable battery, this requires a high temperature requirement when the battery is charged. Usually suitable battery charging temperature is about 0 ~ 40 degrees. But when people use the battery, especially when it needs to be charged, it is very common for its temperature to be below 0 degrees. In addition, at low temperatures, the battery's discharge capacity is also limited, so the battery needs to be charged more. [0004] In the current charging technology, there are mainly three pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H01M10/44H01M10/615
CPCH02J7/0077H01M10/44H01M10/615H02J7/0069Y02E60/10
Inventor 周华文
Owner 上海芯凌微电子有限公司
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