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a power supply circuit

A power supply circuit and voltage technology, applied in battery circuit devices, circuit devices, collectors, etc., can solve problems such as capacity cannot be released, and achieve the effect of improving battery life and reducing energy loss

Active Publication Date: 2016-08-31
SMART IP INFORMATION SERVICE SHENZHEN LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Currently, the operating voltage of mobile terminals is generally between 3.4 and 4.2V. When low-voltage batteries are used to directly supply power to mobile terminals, the discharge range of low-voltage batteries also needs to be maintained between 3.4 and 4.2V, which will result in a voltage of 2.5-4.2V for low-voltage batteries. About 10% of the capacity between 3.4V cannot be released

Method used

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Embodiment Construction

[0021] Certain words are used to refer to specific components in the description and claims, and those skilled in the art should understand that manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a basis for distinction. The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] figure 1 is a schematic structural diagram of the power supply circuit of the first embodiment of the present invention. Such as figure 1 As shown, the power supply circuit includes: a low-voltage battery 11 , a power management chip 12 and a main control module 13 . Wherein, the power supply circuit is used to supply power to the mobile terminal 14 . Wherein, the power management chip 12 includes a power input pin VIN, a switch pin SW and a power output pin VOUT....

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Abstract

The invention discloses a power supply circuit. The power supply circuit includes a low-voltage battery, a power management chip and a main control module. The main control module is connected to the power management chip to control the low-voltage battery to work in the first working mode of the power management chip after being input from the power input pin of the power management chip. Or work in the second working mode of the power management chip after being input from the switch pin, and then supply power to the mobile terminal through the power output pin of the power management chip. Through the above method, the present invention can directly supply power to the mobile terminal when the voltage of the low-voltage battery meets the application requirements of the mobile terminal, thereby reducing the energy loss of the power supply circuit; when the voltage of the low-voltage battery cannot meet the application requirements of the mobile terminal, through The power management chip boosts the voltage of the low-voltage battery to supply power to the mobile terminal, thereby fully releasing the energy of the low-voltage battery to improve the battery life of the mobile terminal.

Description

technical field [0001] The invention relates to the field of mobile terminals, in particular to a power supply circuit. Background technique [0002] A low-voltage battery is a battery with an effective utilization capacity range of 2.5 to 4.2V. Compared with conventional batteries whose effective utilization capacity range is 3.4-4.2V, the capacity per unit volume of the low-voltage battery can be increased by about 10%. Specifically, when the low-voltage battery is discharged from 4.2V to 3.4V, its capacity is about 620Wh / L, and when the low-voltage battery is discharged from 4.2V to 2.5V, its capacity increases to 670Wh / L. [0003] Currently, the operating voltage of mobile terminals is generally between 3.4 and 4.2V. When low-voltage batteries are used to directly supply power to mobile terminals, the discharge range of low-voltage batteries also needs to be maintained between 3.4 and 4.2V, which will result in a voltage of 2.5-4.2V for low-voltage batteries. About 10%...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
Inventor 李新武红波
Owner SMART IP INFORMATION SERVICE SHENZHEN LTD