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Lithium battery charging management chip powered by solar energy

A charging management chip, solar power supply technology, applied in battery circuit devices, current collectors, electric vehicles, etc., can solve the problems of unstable output current and solar cells not being able to directly drive electrical devices

Inactive Publication Date: 2011-02-09
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the solar cell is not an ideal power source. Its output characteristics are affected by factors such as light intensity and light spectrum, and the output current is very unstable. Therefore, the solar cell cannot directly drive the electrical device, but the solar cell needs to be stored in the battery first. Then power the electrical device through the battery

Method used

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  • Lithium battery charging management chip powered by solar energy
  • Lithium battery charging management chip powered by solar energy
  • Lithium battery charging management chip powered by solar energy

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Embodiment Construction

[0022] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0023] The embodiment of the present invention relates to a lithium battery charging management chip that can be powered by solar energy, which can automatically adjust the charging current according to the output current capability of the solar battery, such as figure 1 As shown, the management chip includes a power transistor, a control unit, a battery temperature monitoring unit, a current modulating amplifier, a voltage mod...

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Abstract

The invention relates to a lithium battery charging management chip powered by solar energy, comprising a power transistor, a control unit, a battery temperature monitoring unit, a current modulation amplifier, a voltage modulation amplifier, a chip temperature modulation amplifier, an analog-to-digital converter and a current computing unit. The analog-to-digital circuit can automatically adjust charge current according to current output capacity of an input voltage source and use current output capacity of the input voltage source furthest, thus being very suitable for charging solar batteries including the lithium battery powered by the voltage source with limited output current.

Description

technical field [0001] The invention relates to the technical field of lithium battery charging, in particular to a lithium battery charging management chip that can be powered by solar energy. Background technique [0002] The development of solar cells began in the 1950s and was initially used in space development, aerospace and other fields. After nearly 50 years of development, no matter in terms of development speed, technology maturity, or application fields, solar cells are the best among new energy sources. Solar cells have many advantages, such as: safe and reliable, no noise, no pollution, energy is available everywhere, not subject to geographical restrictions, no need to consume fuel, no mechanical rotating parts, low failure rate, easy maintenance, can be unattended, and the station construction cycle Short, random in size, no need to set up transmission lines, and can be easily combined with buildings, etc. These advantages are beyond the reach of other power ...

Claims

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Application Information

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IPC IPC(8): H02J7/00
Inventor 程莉莉赵建龙熊勇纪虹张为郑殷
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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