CN2588443Y

CN2588443Y - Power source of desk computer

Info

Publication number: CN2588443Y
Application number: CN 02288659
Authority: CN
Inventors: 孙斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-11-25
Filing date: 2002-11-25
Publication date: 2003-11-26
Anticipated expiration: 2012-11-25

Abstract

The utility model discloses a power source of a desk type computer, which comprises a standby battery unit. A voltage output circuit is provided with a diode so as to form one-way conduction for a standby battery. The standby voltage output circuit is also provided with a battery switch, wherein, the battery switch can form linkage with an external connection AC input switch. After the computer standby state loses the AC, a standby battery of the power source unit can only and directly provide power sources for RAM memory. Thereby, the utility model can maintain data in the utility model for a long time. Therefore, the utility model can improve the reliability in the standby state for a desk type computer. Besides, the utility model has the advantages of simple structure, low cost and easy use.

Description

The desktop computer power supplies device

The utility model relates to a kind of desktop computer power supplies device.

Present widely used desk-top computer (for example on the market the most common the computing machine that satisfies ATX mainboard and ATX power specifications) is all supported a kind of special energy-saving run mode, even host computer system is in low energy consumption special state (Stand-By) of a kind of being called " standby ".In this state, the power supply of the peripherals (for example disk and CD drive, all kinds of I/O adapters etc.) in the main frame all is closed, and parts such as the CPU on the mainboard, bus interface also quit work; Supply unit only provides a low power voltage supply (for example ATX power supply+output of 5VSB standby voltage) for internal memory RAM part and peripheral circuit thereof, is not lost to keep the data among the RAM.Because the parts of host computer system except internal memory have all stopped work, holding state has greatly reduced power consumption.Subsequently, the user presses power knob again can make supply unit open operating voltage again, and trigger computing machine and carry out one section quick recovery routine, make system withdraw from holding state rapidly and utilize the instruction and data of preserving in the internal memory that the original state of main frame and peripheral hardware is set fast, thereby accurately turn back to running status before computing machine enters standby constantly.Idle function not only can be saved power supply, and because the process of returning from standby need not to carry out operations consuming time such as the initialization, operating system loading, application program launching of start detection, main frame and peripheral hardware, thereby can also greatly reduce start-up time of computing machine, and intactly keep user previous input data and working environment.

But, the holding state of desk-top computer is not safe and reliable stopped status.When computing machine is in holding state, data in its memory ram and program run information are not saved on the hard disc, this requires supply unit to keep one to keep the required particular job voltage of RAM data, and can not be interrupted all the time when standby and add the alternating current supply.Otherwise in a single day the data in the memory ram are cut off electricity and just will be lost rapidly.Thereby any power source fault or artificial power operation all can cause the inefficacy of desk-top computer holding state.This not only can lose not the user data of preserving, but also may make operating system not cause operating system failure and disk file mistake because some lastest imformation writes back on the hard disc, jeopardizes the safety of total system.Owing to exist this risk, most of users not computed the time, all to select to shut down fully, and do not use idle function.General office or machine room be in order to prevent electric power network fluctuation, lightning impulse or fire safety requirement, also needs the user computing machine to cut out and cut off Alternating Current Power Supply after coming off duty.In fact the idle function of desk-top computer does not play a role like this, at present.

On the other hand, the idle function of portable computer has then obtained general utilization, this is because the supply unit of portable computer has rechargeable battery, can provide for a long time and keep the needed weak current of holding state, thereby avoid the above-mentioned unreliability of desk-top computer.

A kind of known techniques of desk-top computer power supply that keeps is to use uninterrupted power source UPS (Uninterruptible Power Supply).Recently reported also that built-in UPS (is built in the computing machine, added the main frame of a ups power etc. as UPS card, inside), and integrated the supply unit of UPS (be that UPS circuit and accumulator thereof all are arranged in the Desktop PC power pack, need not to take the cabinet inside space).By using UPS can avoid the unreliability of desk-top computer holding state to a certain extent.But, as a kind of power down emergency method, UPS is used for whole computer system power supply (peripheral hardwares such as disk, CD drive that comprise whole parts of mainboard and separately power taking), rather than targetedly only to memory ram unit power supply, thereby and be not suitable for power supply under the holding state.The power-on time of the UPS of built-in or integrated form generally short (from approximate number minute to ten several minutes) is difficult to satisfy the requirement of long-time standby, but also has the weak point that cost is higher, be not easy to practicability.

The purpose of this utility model is to provide a kind of desktop computer power supplies device, and it can only be powered to the memory ram unit after holding state loses the input of external communication electricity targetedly, thereby can keep data wherein for a long time.

For achieving the above object, desktop computer power supplies device of the present utility model comprises transformation and rectification filtering unit, voltage regulation unit, control module, standby voltage output unit, it is characterized in that it also comprises a battery unit, its positive voltage output end is connected with the outlet line of described standby voltage output unit.

Also be provided with a diode on the contact of above-mentioned connection and the circuit between the standby voltage output unit, the positive voltage of this diode pair battery forms high resistance.Also be provided with a cell switch on the circuit of above-mentioned battery unit, this switch can form interlock with an external AC input switch.Above-mentioned battery unit can be arranged on the case for desktop computer internal stent, or is integrated in the power pack.

With existing desktop computer power supplies device relatively, the utility model has improved the reliability of desk-top computer at holding state, can after outage, provide memory ram to refresh required voltage in long period of time, and simple in structure, cost is lower, be easy to practicality.

This instructions will be further described technique scheme in conjunction with the accompanying drawings and embodiments with the lower part.

Accompanying drawing 1 is the pie graph of the utility model embodiment.

Desktop computer power supplies device shown in Figure 1 is an ATX power supply, and it comprises following conventional component units: circuit units 4 such as transformation and rectification filtering unit 1, voltage regulation unit 2, standby voltage output unit 3, control and protection, and parts such as heat radiation, shell.Add alternating current (～220V) carry out conventional processing such as transformation, rectification, filtering, pulse power conversion, width modulation, automatic voltage regulation and protection control by said units; form the multichannel steady direct current and press, the contact that on connector 5, is provided with externally export (comprise ± 3.3V, ± 5V, ± 12V output voltage and ground wire).Some is used as one group of special control signal by ATX desktop computer mainboard in the voltage of being exported, comprise PS-ON (for mainboard opens and closes the control signal that power supply or network remote wake up), Power-Good (control signal that can use to mainboard indication power supply) and+5VSB.Wherein+5VSB is positive 5V level output, is produced by above-mentioned standby voltage output unit 3, is called "+5V standby voltage ".This voltage is mainboard the required operating voltage of holding state (being Stand-By voltage, to keep the data in the memory ram), and is used as the working power of mainboard automatic power management and Remote Wake Up unit.As long as power up (no matter whether starting shooting) to the ATX power supply, its+the 5VSB output lead just remains+and the voltage of 5V exports.

Except that above-mentioned conventional component units, this supply unit also comprises a battery unit 6.It is for add alternating voltage (～220V) disconnect or power down after continue to keep standby (Stand-By) voltage and of being provided with treats machine battery.Its positive pressure side directly is connected+the 5VSB outlet line on, thereby can provide standby voltage to the ATX mainboard in parallel.Magnitude of voltage on the magnitude of voltage ratio+5VSB circuit of battery 6 lower slightly (virtual voltage of ATX power supply+5VSB is set at 5.05V～5.10V usually, and can regulate by the relevant setting of ATX mainboard BIOS).In the present embodiment, this battery is a rechargeable battery, thereby is adding alternating current when existing, and+5VSB voltage can charge to it, so that it keeps sufficient electric weight.When outage or user close alternating current when input, this battery can continue to provide standby voltage.

In order more effectively to utilize the electric current of battery 6 when the standby, present embodiment also is provided with a diode 7 in the positive pressure side of battery on the tie point of+5VSB outlet line and the circuit between the standby voltage output unit 3, the positive voltage of this diode pair battery output forms high resistance, so that most current direction motherboard circuits unit of battery 6.

In order to close battery 6 under the state of shutdown fully, present embodiment also also is provided with a cell switch K on the circuit of above-mentioned battery unit.This K switch also can with an external AC input switch K ' formation one linkage type pushbutton switch (K-K '), be arranged on the panel of cabinet.The user can connect by this coupled switch (K-K ') or disconnect the alternating current input fully, and is switched on or switched off the power supply of 6 couples+5VSB of battery standby voltage circuit simultaneously.

The line circuit of above-mentioned battery unit 6 and diode 7 is simple, and battery can be placed on the case for desktop computer internal stent, is connected with+5VSB mouth by independent lead-in wire.This set can not limit the size shape of battery, thereby can use rechargeable battery (for example Ni-Cad battery) cheaply.Also can select the rechargeable battery (for example Li-ion battery) of high power capacity, small size for use, thereby it is arranged in the power pack compactly.

The technical scheme of this instructions can also realize with other mode that is different from the foregoing description.Appending claims has been contained many distortion and the replacement to each key element described above.

Claims

1. desktop computer power supplies device, comprise transformation and rectification filtering unit (1), voltage regulation unit (2), standby voltage output unit (3), control module (4), it is characterized in that: it also comprises a battery unit (6), and its positive voltage output end is connected with the outlet line of described standby voltage output unit (3).

2. desktop computer power supplies device according to claim 1, it is characterized in that: also be provided with a diode (7) on contact that described outlet line connects and the circuit between the standby voltage output unit (3), this diode (7) is to the positive voltage formation high resistance of battery unit (6).

3. desktop computer power supplies device according to claim 1 and 2 is characterized in that: also be provided with a switch (K) on the circuit of above-mentioned battery unit (6).

4. desktop computer power supplies device according to claim 3 is characterized in that: described switch (K) and an external AC input switch (K ') interlock.