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Power supply unit, power supply device and system and power supply method

A technology of power supply unit and power supply device, which is applied in the direction of battery circuit device, circuit device, and secondary battery charging/discharging, etc. The effect of further increasing the consumption, reducing the current, and reducing the number of charging times

Active Publication Date: 2008-01-09
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The problem to be solved by the present invention is: the power consumption of the power management unit in the power supply unit is large, which affects the performance and life of the power management unit

Method used

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  • Power supply unit, power supply device and system and power supply method
  • Power supply unit, power supply device and system and power supply method
  • Power supply unit, power supply device and system and power supply method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] This embodiment provides a power supply unit, which can be applied to devices powered by external power sources and batteries.

[0038] As shown in FIG. 2 , the power supply unit 100 in this embodiment includes: a battery 30 for powering the electrical equipment 200; a power management unit 10 connected to the battery 30 and an external power supply 20 for providing The power supply voltage of the external power supply 20 is converted or stabilized to supply power to the electrical equipment 200 . Wherein, the external power source 20 refers to a power source used to be externally connected to a device (such as a portable device) to supply power to it or to charge a battery, such as a charger, a USB power supply unit, and the like. In addition, the external power supply 20 can also charge the battery through the power management unit 10 . A first controllable switch K1 is provided on the line connecting the battery 30. When the external power supply 20 is in place and ...

Embodiment 2

[0043] In this embodiment, the power supply unit 100 is further improved on the basis of Embodiment 1. As shown in FIG. The non-small system module 50 does not have high requirements on voltage performance, so the external power supply 20 directly supplies power to the non-small system module 50 without passing through the power management unit 10 and will not affect its normal operation. The power supply unit 100 is also provided with a power supply line for electrically connecting the non-small system module 50 with the external power supply 20 . In addition, since the voltage value provided by the external power supply 20 is fixed and does not necessarily match the voltage value required by the non-small system module 50, a DC conversion module 60 may also be provided on the power supply line for performing necessary voltage conversion. Specifically, there may be multiple DC conversion modules 60 connected in parallel, each having a different transformation coefficient, an...

Embodiment 3

[0048] This implementation provides a power supply device, as shown in Figure 4,

[0049] The power supply device 300 includes: a battery 30 and an electrical device, wherein the electrical device may be a non-small system module 50 , and a second controllable switch K2 is provided on the connection line between the non-small system module 50 and the battery 30 . And it also includes a power supply line to electrically connect the external power supply 20 and the non-small system module 50 . In addition, a DC conversion module 60 may also be provided on the line for performing necessary voltage conversion. Specifically, there may be multiple DC conversion modules 60 connected in parallel, each having a different transformation coefficient, and the transformation coefficient may be a variable transformation coefficient according to power supply requirements.

[0050] During the power supply process, when the external power supply 20 is in place, the second controllable switch ...

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PUM

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Abstract

The invention is concerned with the unit, the setup, the system and the method of power supply. The method includes: cuts off the connection between the power supply managing unit, the battery and the non-small system module but connects the module with the external power electrically, when it is being detected. The invention does not request the charging control module of the power supply managing unit for charging the non-small system module whether the external power supply on-position, that reduces the electric current running through the power control module. It also reduces the frequency for charging by applying external power supply that prolong the life cycle of the battery.

Description

technical field [0001] The invention relates to a power supply technology, in particular to a power supply technology in which an external power supply and a battery are used for power supply in a device. Background technique [0002] As battery-powered portable devices such as mobile phones consume more and more power, the Power Management Unit (PMU) for power management also generates more and more heat, which affects the performance and use of the power management unit. life. As shown in Fig. 1, it is a schematic structural diagram of a power supply unit in the prior art, wherein the power management unit 10 includes a charging control module 11 and a voltage conversion module 12, wherein the voltage conversion module 12 mainly includes several direct current conversion modules (referred to as: DC / DC module), used for voltage conversion, and also includes several low-dropout linear regulators (Low Drop-Out, LDO for short); the power management unit 10 is connected to the...

Claims

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Application Information

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IPC IPC(8): H02J7/00H01M10/44
CPCY02E60/12Y02E60/10
Inventor 李城铭孙勇杨志国
Owner HUAWEI TECH CO LTD
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