WO2008022549A1

WO2008022549A1 - Electronic ballast device for uninterrupted lighting of hid lamp

Info

Publication number: WO2008022549A1
Application number: PCT/CN2007/002439
Authority: WO
Inventors: Ying Li; Jing Fu
Original assignee: Ying Li; Jing Fu
Priority date: 2006-08-15
Filing date: 2007-08-14
Publication date: 2008-02-28
Also published as: CN2938695Y

Abstract

An electronic ballast device for uninterrupted lighting of HID lamp, comprises: an input unit, an output unit and an UPS unit for uninterrupted supplying power to HID lamp when the power network switches or instantaneous-dropping dithers, wherein the input unit and the output unit are serially connected by two branch circuits, the one is that the input unit are directly serially connected to the output unit, the other is that the UPS unit is set to be serially connected between the input unit and output unit. As a result, uninterrupted lighting will be implemented when the power network switches, and the irreversible damages to relating electronic components and lamp due to extra high voltage triggering can be completely eliminated.

Description

HID lamp uninterrupted lighting electronic ballast device

The utility model relates to an electronic ballast device, in particular to an electronic ballast device for uninterrupted illumination of HID lamps.

Background technique

At present, in the field of well-known lighting appliances, HID lamps (high pressure sodium lamps or metal! 3⁄4 hydride lamps) have been widely used in large stadiums, aviation, finance and other lighting places.

The current HID lamp is usually powered by a conventional electronic (or inductive) ballast based on a conventional electronic (or inductive) ballast in the case of grid switching or grid transient jitter conditions. The ballast includes filtering. Unit circuit, AC / DC unit circuit, trigger unit circuit and DC / AC unit circuit. Using the above-mentioned ultra-high pressure thermal trigger technology, it can effectively shorten the arc-extinguishing time of HID lamp due to power grid switching (such as shrinking to 3 ~ 5s), achieved good results in solving the problem of arc extinction, and was widely used.

However, since the ultra-high pressure heat trigger is an extreme technical measure, the tens of thousands of volts of ultra-high pressure heat triggering can not be avoided for the related electronic components, especially the serious damage to the life of the HID lamp, and then due to the production of HID lamps. The discreteness of the process and the degradation process of the lamp start-up parameters, the reliability and consistency of the HID lamp's ultra-high pressure heat trigger is obviously difficult to guarantee; and when the power grid is switched or the power is dropped, the uninterrupted illumination is still not realized, ie Unable to achieve uninterrupted illumination of HID lamps in the true sense of illumination. Utility model content

In order to overcome the above drawbacks and deficiencies, the object of the present invention is to provide an electronic ballast device for uninterrupted illumination of HID lamps, which can realize uninterrupted illumination of HID lamps during grid switching or instantaneous jitter, and avoid switching or instantaneous dropping. The effect of jitter on the life of the HID lamp. In order to achieve the above object, the present invention relates to an HID lamp uninterrupted illumination electronic ballast device, comprising a rectifying unit, a DC/AC unit and an uninterruptible power supply unit;

An uninterruptible power supply unit for uninterrupted power supply to HID lamps during grid switching or transient jitter;

Wherein the input unit and the output unit are connected in series by two branches, one branch is directly connected to the output unit in series with the output unit, and the other branch is between the input unit and the output unit An uninterruptible power supply unit is provided in series.

As a further improvement of the present invention, the device further includes:

The power switching unit is configured to convert the power supply of the HID lamp to an uninterruptible power supply unit to supply power to the HID lamp during power grid switching or instantaneous drop jitter;

The power switching unit is disposed in the output unit of the uninterruptible power supply unit. The power switching unit is added to save power for the power supply of the HID lamp.

As a further improvement of the present invention, the uninterruptible power supply unit includes: an energy storage module and a charging module connected in series therewith, wherein the charging module is disposed between the input unit and the energy storage module;

The charging module is configured to charge the energy storage module;

The energy storage module is configured to store electrical energy and provide uninterrupted power supply to the HID lamp during grid switching or instantaneous jitter.

As a further improvement of the present invention, the uninterruptible power supply unit further includes: a series: a DC/DC module disposed between the energy storage module and the output unit; wherein

The DC/DC module is configured to convert a voltage of a direct current output of the energy storage module. In this way, the DC/DC module can be used to select a smaller voltage energy storage unit, which saves costs. As a further improvement of the present invention, the power switching unit is a door module.

As a further improvement of the present invention, the OR logic gate module is composed of two parallel diodes, wherein one diode is arranged in series between the input unit and the output unit, and the other diode is arranged in series in the DC/DC module and the output unit. between.

As a further improvement of the present invention, the energy storage module is a farad capacitor.

In this way, the use of a farad capacitor as an energy storage module can shorten the charging time and increase the service life.

After adopting the above device, since the power supply system of the HID lamp has the UPS function, the true uninterrupted illumination can be realized when the power grid is switched, and the ultra-high voltage triggering link is eliminated in the circuit, so that the ultra high voltage trigger can be completely eliminated. Cause irreversible damage to related electronic components and light bulbs.

DRAWINGS

Figure 1 is a general structural view of the present invention;

Figure 2 is a structural view of a specific implementation of the present invention;

FIG. 3 is a circuit structural diagram of a specific implementation of the present invention.

detailed description

The embodiments of the present invention are further described in detail below with reference to the accompanying drawings:

As shown in FIG. 1 , the utility model adds an uninterruptible power supply unit to the existing input unit and output unit, and the uninterruptible power supply unit can continuously supply the HID lamp during grid switching or instantaneous jitter. .

2 is a specific structural diagram of a preferred implementation of the present invention, including a filtering unit, an AC / DC unit, a charging module, an energy storage module DCL, a DC / DC module, or a logic gate circuit, a trigger unit, and DC / AC unit; The above filter unit, AC / DC unit constitutes input unit, charging module, energy storage module, DC / DC module constitutes uninterruptible power supply unit, trigger unit and DC / AC unit constitute output unit, or logic gate The circuit is composed of two diodes, wherein the charging module is continuously charging the energy storage module, and when the power grid switches or blinks, the DC/DC module converts the voltage output by the energy storage module to the HID lamp through the logic circuit or the logic circuit. After the voltage is applied, the HID lamp is supplied with uninterrupted power.

As shown in FIG. 3, the ballast device of the present invention comprises: a low-pass EMI circuit composed of a common mode inductor L1 and Cl, C2, C3 and C4, the main function of which is to suppress external radiated radio frequency interference (RFI) And electromagnetic interference (EMP); AC / DC circuit with APFC characteristics consists of rectifier bridge BR1, chip Ul (MC34262) and inductor L2, M0S tube Ql, and diode D1, the main function is to improve the system power factor (λ), Suppresses higher harmonics (THD) and lamp current peak-to-peak ratio; DC/AC circuit and trigger circuit consists of chip U2 (IR2153), M0S tube Q2, Q3 and boost inductor T1 and bidirectional trigger tube (SID1). The main function is Start and burn the HID lamp.

The charging module, the energy storage module and the DC/DC module added by the utility model together constitute a UPS circuit to realize uninterrupted power supply to the HID lamp during grid switching or instantaneous falling jitter; the above charging module is U3 (3843) ), T2, Q4, L3 and D5; the energy storage module selects a farad capacitor DCL; the DC/DC unit is mainly composed of U4 (3843); the main function of the UPS is the power failure moment of the power grid switching or the instantaneous falling jitter Uninterrupted power supply to the DC/AC circuit in the next stage, so that illumination can be continuously performed.

The added or logic gate module of the utility model is composed of two diodes D2 and D3, and its function is to complete the conversion process when the power grid switches the power failure moment or the instantaneous drop jitter; the principle is that the voltage applied to the two diodes is not At this time, the diode with high voltage is turned on, and the diode with low voltage is turned off. Once the diode with high voltage is turned off, the diode with low voltage is turned from off to on. The utility model is to output the Ul-APFC through the diode D2 and the diode D3, U4 - DC / The output of the DC is combined with the input of the next stage U2 - DC / AC circuit to form an "or" logical connection.

Since the power grid switching (or grid short-jumping jitter) process is instantaneously completed and the time is extremely short ("ls"), the required energy storage is also very limited; therefore, the present invention can solve such work with a small capacity of the farad capacitor DCL. Under the condition of HID lamp uninterrupted illumination, not only can save cost, but also can be instantaneously charged, and the life of the farad capacitor is particularly long; in the selection of the farad capacitor can choose different capacity of the farad capacitor according to the power of the HID lamp .

When the power failure of the power grid is switched off or the instantaneous jitter occurs, the diode D2 is turned off by conduction, and at the same time, the diode D3 is turned on by the cutoff, and the farad capacitor DCL is also switched from the charging state to the discharging state. The HID lamp is powered by the voltage required by the U4 (3843) DC/DC unit to convert the voltage to the HID lamp until the switching of the grid is completed or the instantaneous jitter is stopped.

With such a device, since the power supply system of the HID lamp has a UPS function, real uninterrupted illumination can be realized when the power grid is switched. At the same time, because there is no ultra-high voltage triggering link in the circuit, the irreversible damage caused by the ultra-high voltage trigger to the relevant electronic components and the bulb can be completely eliminated. Of particular importance is the wide temperature range of DCL (-40 °C ~ 8 (TC), instantaneous ultra-fast charging and high current discharge characteristics, long life (500,000 charge/discharge) and lifetime maintenance-free features. It is precisely because of these remarkable features that HID lamps are able to continuously illuminate electronic ballast technology and products in some important occasions.

Claims

Claim

An HID lamp uninterrupted illumination electronic ballast device, comprising an input unit and an output unit, wherein the device further comprises:

2. The apparatus of claim 1, wherein the apparatus further comprises:

Wherein the power switching unit is disposed in the output unit of the uninterruptible power supply unit

The HID lamp uninterrupted illumination electronic ballast device according to claim 1 or 2, wherein the uninterruptible power supply unit comprises: an energy storage module and a charging module connected in series therewith, the charging module setting Between the input unit and the energy storage module; wherein

The charging module is configured to charge the energy storage module;

4. The HID lamp uninterrupted illumination electronic ballast apparatus according to claim 3, wherein the uninterruptible power supply unit further comprises: a DC disposed in series between the energy storage module and the output unit. / DC module; where,

The DC/DC module is configured to convert a voltage of a direct current output of the energy storage module.

5. The HID lamp uninterrupted illumination electronic ballast device according to claim 4, wherein the power switching unit is an OR logic gate module.

6. The HID lamp uninterrupted illumination electronic ballast device according to claim 5, wherein the OR logic gate module is composed of two parallel diodes, wherein one diode is arranged in series in the input unit and the output unit. Another diode is placed in series between the DC/DC module and the output unit.

7. The HID lamp uninterrupted illumination electronic ballast device according to claim 6, wherein the energy storage module is a farad capacitor.