CN202856392U

CN202856392U - Uninterrupted power supply

Info

Publication number: CN202856392U
Application number: CN 201220430117
Authority: CN
Inventors: 叶金; 叶光岩
Original assignee: Hai Ge Electric Applicance Co Ltd Of Liuzhou City
Current assignee: Hai Ge Electric Applicance Co Ltd Of Liuzhou City
Priority date: 2012-08-28
Filing date: 2012-08-28
Publication date: 2013-04-03
Anticipated expiration: 2022-08-28

Abstract

Disclosed is an uninterrupted power supply, comprising a casing, wherein the casing is internally provided with a master controller, an inverter, a charger, charge-and-discharge controller, and a storage battery. Further comprised are a timer which controls the storage battery to carry out charging and discharging maintenance at interval, a voltage comparator, a discharge completing relay, and a discharge control relay. Compared with the prior art, the uninterrupted power supply of the utility model solves the problem that the service lifetime of the storage battery employed by the conventional uninterrupted power supply is very short.

Description

Uninterrupted power supply

Technical field

The utility model relates to power-supply device manufacturing technology field, especially a kind of equipment that power supply uninterruptedly is provided.

Background technology

Now widely used uninterrupted power supply (ups) Unity generally is by including casing, being installed in the formations such as master controller, inverter, charger and storage battery of the inside of described casing.It externally power supply have a power failure or voltage when low, automatically start inverter work, connect its inner storage battery powering load of installing, when externally power up is normal, automatically transfer charging, holding state to.But along with improving constantly of electric power supply capacity, the continuous transformation of power transformating and supplying facility, imbalance between power supply and demand is alleviated gradually.Under normal conditions, the mains failure odds is very little, so the storage battery that uses in the uninterrupted power supply is in the floating charge dormant state for a long time, owing to for a long time can not get activating, therefore described actual capacity of an accumulator can fall sharply, cause early failure, to such an extent as to when having a power failure suddenly, can't drop into normal operation, thus many unnecessary losses caused.In order to address the above problem, manufacturer's prompting user in its product description manually once discharges and recharges operation at set intervals, but because this operation is cumbersome, also is easy to forget, actual effect is also bad.

Summary of the invention

Problem to be solved in the utility model provides a kind of energy timing automatic carry out the uninterrupted power supply that accumulator cell charging and discharging is safeguarded.

In order to address the above problem, the technical solution adopted in the utility model is: this uninterrupted power supply, include casing, and be installed in master controller, inverter, charger and the storage battery of described box house.The positive and negative electrode two ends of described storage battery also are parallel with the voltage pressure sampling circuit that is in series by resistance R 1 and R2; The voltage comparator ic of the described battery tension of Real-Time Monitoring; The reference voltage circuit of the described voltage comparator ic that is in series by resistance R 3 and voltage stabilizing didoe VD; Control the timer T of described storage battery timing discharging; The voltage of described storage battery "-" input that minute is crimped onto described voltage comparator ic on the resistance R 2 of described voltage pressure sampling circuit, the voltage of the voltage stabilizing didoe VD of the reference voltage circuit of described voltage comparator ic is received "+" input of described voltage comparator ic, and the output of described voltage comparator ic is connected to discharge and finishes relay K 1; Also have a normally opened contact T-1 by described timer T, described discharge to finish the normally-closed contact K1-1 of relay K 1 and the control branch road that control of discharge relay K serial connection forms at the positive and negative electrode two ends of described storage battery; Be parallel with the self-locking normally opened contact K-1 of described control of discharge relay K at the normally opened contact T-1 of described timer T; The normally-closed contact K-2 series connection of described control of discharge relay K is externally between the power firestreak input of power firestreak and described uninterrupted power supply.

The storage battery that is used in the uninterrupted power supply at present mostly is maintenance-free lead-acid battery, although title is called maintenance-free lead-acid battery, if can not get for a long time correct maintenance, is easy to cause damage.The maintaining method of science is regularly to discharge and recharge operation fully, and the quality of storage battery is different, and its maintenance period is also different, but should once discharge and recharge operation fully every three months generally speaking, to guarantee the activity of storage battery.According to above-mentioned situation, we have increased a timer and voltage comparator newly at the circuit base of original uninterrupted power supply, and described timer and voltage comparator are controlled described storage battery and regularly carried out charge and discharge maintenance.

Owing to adopted technique scheme, the utility model compared with prior art has following beneficial effect:

Because the storage battery that uses in this uninterrupted power supply is regularly to carry out charge and discharge maintenance under the control of timer and voltage comparator.Therefore, this uninterrupted power supply can effectively prevent the generation of the batteries early failure of use in it, obviously prolongs the useful life of this product, significantly improves the operational reliability of this product.

Description of drawings

Fig. 1 is the circuit block diagram of the utility model embodiment 1.

Embodiment

The invention will be further described below in conjunction with accompanying drawing embodiment:

This uninterrupted power supply shown in Figure 1, include casing 1, be installed in the master controller in the casing 1, inverter, charger, storage battery, timer T, voltage comparator ic, dividing potential drop sample resistance R1, R2, reference voltage circuit resistance R 3, voltage stabilizing didoe VD, the control of discharge relay K, relay K 1 etc. is finished in discharge.The timer T that is connected across the accumulator anode and cathode two ends drives the relay K adhesive every 2-3 high level pulse signal of month timing output by its normally opened contact T-1, the external power source supply of uninterrupted power supply is cut off in the normally opened contact K-1 self-locking of relay K, its series connection externally the normally-closed contact K-2 between the power firestreak input of power firestreak and uninterrupted power supply.In this case, it is load supplying that uninterrupted power supply starts inverter work automatically, and therefore, storage battery transfers discharge condition to by charged state.By being connected in parallel on voltage dividing potential drop sample resistance R1 and the R2 at storage battery two ends, with storage battery "-" input that minute is crimped onto voltage ratio IC on resistance R 2, simultaneously the voltage of the voltage stabilizing didoe VD of the reference voltage circuit of voltage comparator ic is received "+" input of voltage comparator ic.When magnitude of voltage that A point voltage value is ordered more than or equal to B, voltage comparator ic does not overturn, and keeps low level output, and uninterrupted power supply is carrying out inversion work always, and storage battery keeps discharge condition.When magnitude of voltage that A point voltage value is ordered less than B, the voltage comparator output high level that overturns immediately, expression battery discharging is finished, connect discharge and finish relay K 1, the normally-closed contact K1-1 that relay K 1 is finished in the discharge of series connection in timer T normally opened contact T-1 and control of discharge relay K control branch road disconnects the control of discharge relay K, external power source restores electricity, at this moment, uninterrupted power supply transfers the charging holding state automatically to, like this, storage battery has just been finished a complete timing discharging process and has been transferred again charged state to.

Claims

1. uninterrupted power supply, include casing (1), be installed in described casing (1) inner master controller, inverter, charger and storage battery, it is characterized in that: the positive and negative electrode two ends of described storage battery also are parallel with the voltage pressure sampling circuit that is in series by resistance R 1 and R2; The voltage comparator ic of the described battery tension of Real-Time Monitoring; The reference voltage circuit of the described voltage comparator ic that is in series by resistance R 3 and voltage stabilizing didoe WD; Control the timer T of described storage battery timing discharging; The voltage of described storage battery "-" input that minute is crimped onto described voltage comparator ic on the resistance R 2 of described voltage pressure sampling circuit, the voltage of the voltage stabilizing didoe WD of the reference voltage circuit of described voltage comparator ic is received "+" input of described voltage comparator ic, and the output of described voltage comparator ic is connected to discharge and finishes relay K 1; Also have one to finish the normally-closed contact K1-1 of relay K 1 and the control branch road that control of discharge relay K serial connection forms by the normally opened contact of described timer T, described discharge at the positive and negative electrode two ends of described storage battery; Be parallel with the normally opened contact K-1 of described control of discharge relay K at the normally opened contact of described timer T; The normally-closed contact K-2 series connection of described control of discharge relay K is externally between the power firestreak input of power firestreak and described uninterrupted power supply.