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System power supply providing equipment using battery charger

A technology for battery chargers and system power supplies, which can be used in battery circuit devices, current collectors, electric vehicles, etc., and can solve problems such as power loss and inability to provide current from the system

Inactive Publication Date: 2006-07-12
LEJIN ELECTRONICS KUNSHAN COMPUTER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, according to the activation connection or disconnection of the above-mentioned AC adapter 10, if the first switch 11 and the second switch (SW2) 14 are turned on / off, power loss due to the switching operation occurs.
In order for the above-mentioned DC / DC inverter 12 to be able to accept the higher-voltage power supplied from the above-mentioned AC adapter 10, there is a problem of using expensive parts with higher withstand voltages.
[0006] In addition, if the power output by the above-mentioned battery charger 15 is directly transmitted to the battery 16 and the DC / DC converter 12, for example, when the battery is being charged, there is a problem that the current cannot be fully provided to the system according to the design current limit of the battery.
In particular, when the battery is over-discharged, causing it to be charged at a low speed, in order to prevent damage to the battery, a small amount of charging current should flow in. Therefore, the insufficient current causes the system to stop abnormally.

Method used

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  • System power supply providing equipment using battery charger
  • System power supply providing equipment using battery charger
  • System power supply providing equipment using battery charger

Examples

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Embodiment Construction

[0022] Embodiments of the system power supply device using a battery charger according to the present invention will be described in detail below with reference to the accompanying drawings.

[0023] figure 2 Represents the constitution of the system power supply equipment utilizing the battery charger of the present invention, for example, the notebook computer to which the present invention is applied includes a current detection part 31 and a charging voltage control part 32, a DC / DC converter 33, a charging current control part 34 and a battery The state detection unit 35 is constituted.

[0024] In addition, the current detection unit 31 detects the current value of the power supply provided by the AC adapter 30 and outputs it to the charging current control unit 34; the charging voltage control unit 32 adjusts the voltage level of the power supply provided by the AC adapter 30 to suit the above-mentioned The voltage of the battery 36, such as image 3 As shown, the ch...

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Abstract

The electric power supply device with cell charger comprises: a charge voltage control part to adjust power from ac adapter fit to proper cell voltage, a dc / dc frequency converter to transform said power into system power for supply, and a charge current control part to adjust and send said output charge current of voltage control part to cell. This invention reduces voltage to input system, and simplifies device.

Description

(1) Technical field [0001] The present invention relates to a system power supply device using a battery charger, and more particularly, an invention related to a system power supply device using a battery charger that enables more efficient battery charging and system power supply. (2) Background technology [0002] figure 1 It represents an embodiment in which the power supply of a general AC adapter and battery power are selected and provided as a system power supply. For example, in the case of inserting a battery 16 inside an electronic instrument such as a notebook computer, if the AC adapter 10 is directly connected, from the above-mentioned AC (AC ) The power provided by the adapter 10 is transmitted to the DC / DC converter 12 by the control unit 13 through the first switch (SW1) 11 that can be turned on / off, and the above-mentioned DC / DC (DC / DC) converter 12 converts this power Converted to DC / DC and supplied as system power. [0003] In addition, the power supplie...

Claims

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Application Information

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IPC IPC(8): H02J7/00H02J7/10
Inventor 黄范荣
Owner LEJIN ELECTRONICS KUNSHAN COMPUTER CO LTD
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