CN210491293U - Emergency lamp and control circuit thereof - Google Patents
Emergency lamp and control circuit thereof Download PDFInfo
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- CN210491293U CN210491293U CN201921049093.1U CN201921049093U CN210491293U CN 210491293 U CN210491293 U CN 210491293U CN 201921049093 U CN201921049093 U CN 201921049093U CN 210491293 U CN210491293 U CN 210491293U
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Abstract
The utility model discloses an emergency lamp and a control circuit thereof, wherein the emergency lamp comprises a LED lamp panel, a battery and a control circuit, wherein the control circuit comprises an AC-DC module and an emergency drive control circuit electrically connected with the AC-DC module, wherein the emergency drive control circuit comprises an energy storage capacitor and a relay electrically connected with the energy storage capacitor, the relay has a normal state and an emergency state, in the normal state, the AC-DC module outputs required direct current to the emergency drive control circuit and the battery respectively, the relay breaks the circuit between the battery and the emergency drive control circuit, when the AC-DC module is powered off, the relay is powered by the energy storage capacitor to be switched to the emergency state, the relay switches on the circuit between the battery and the emergency drive control circuit, thereby the battery power supply drive the illumination of LED lamp plate.
Description
Technical Field
The utility model relates to an emergency lighting field especially relates to an emergency light and control circuit thereof, wherein passes through control method with storage method can prevent a battery overdischarge of emergency light is in order to improve the unpacking qualification rate of emergency light can reduce the whole consumption under the emergency light standby state.
Background
The emergency lamp is a lighting lamp started due to the failure of a normal lighting power supply, a battery of the emergency lamp is used as a self-contained power supply to provide electric energy output for circuits and lighting of the emergency lamp under the condition that the normal lighting power supply fails, and even in the transportation and storage processes after the emergency lamp is produced, the battery of the emergency lamp is still maintained to be conducted on part of the circuits and has certain energy consumption, namely, under the condition that no external electric energy is supplied, for example, in the long-time transportation and storage processes of the emergency lamp or in the long-time emergency lighting state, the battery of the conventional emergency lamp is always in a discharging state. When the battery is discharged for a long time and cannot be charged in time, the battery has the risk of being scrapped due to over-discharge. In order to overcome such risks, in the transportation and storage phases of the emergency light, the emergency light is installed and put into use mainly in the effective time of the battery, such as within half a year, so as to ensure that the battery can be charged in time to prevent the battery from being over-discharged. However, it is difficult to precisely control the time from the production of the emergency light to the putting into use, and the transportation time and the storage time are difficult to precisely control within the time range of the complete discharge of the battery, for example, when the emergency light needs to be transported to the overseas, the long transportation process cannot be avoided. In the long-time emergency lighting state of the emergency lamp, at present, the industry mainly cuts off the electric energy output of the battery to the lighting by monitoring the battery voltage of the emergency lamp when the battery voltage of the emergency lamp is lower than a certain value, and the battery of the emergency lamp is still maintained to be conducted on a part of circuits and has certain energy consumption, and the battery can also generate the over-discharge condition in the state that the external electric energy supply is continuously cut off, so the problem of the over-discharge of the battery cannot be solved from the root by the mode. More seriously, when the battery of the emergency lamp is damaged due to over discharge, the whole emergency lamp cannot be normally put into use, and the problems of low emergency lamp unpacking qualification rate and increased battery rejection rate can be caused.
It should be mentioned that, under normal circumstances, the emergency light fixture generally uses the nickel-cadmium battery, and the nickel-cadmium battery is generally not provided with the protection board, so during the long-time transportation and storage of the nickel-cadmium battery, the nickel-cadmium battery is easily damaged by over-discharge, which causes the whole emergency light fixture to be unable to be put into use, and this will cause great loss. In addition, since the nickel-cadmium battery has a certain voltage rise after stopping discharging, in a long-time emergency lighting state of the emergency lighting fixture, when the battery voltage of the emergency lighting fixture is lower than a certain value and the battery is disconnected for outputting the electric energy for lighting, the voltage rise of the battery may cause that the battery of the existing emergency lighting fixture is repeatedly conducted with a lighting circuit of the lighting fixture in a state that the actual electric quantity is low, so that the lighting fixture enters a flickering abnormal state and further the energy consumption of the battery is increased, and further, the excessive discharging of the battery is accelerated to damage the battery.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an emergency light and control circuit thereof, wherein the emergency light includes a battery, wherein control circuit passes through control method can effectively prevent the battery produces the problem of overdischarge.
Another object of the present invention is to provide an emergency light and a control circuit thereof, wherein the control circuit includes a relay, wherein the relay has a normal state, wherein in the normal state, the relay is completely disconnected between the battery and the control circuit to prevent the battery from discharging.
Another object of the present invention is to provide an emergency light and a control circuit thereof, wherein the normal state, the battery is connected to a dead leg of the relay, therefore the battery and the circuit between the control circuits is maintained in a completely disconnected state, therefore the battery does not lose electric energy in the normal state.
Another object of the present invention is to provide an emergency light and a control circuit thereof, wherein under the normal state, the battery and the circuit between the control circuits is completely disconnected, the battery is not easy to appear the problem of over-discharge, therefore the emergency light does not need to be frequently maintained and tested.
Another object of the present invention is to provide an emergency light and a control circuit thereof, wherein only in the emergency state, the relay is turned on the control circuit and the circuit between the batteries, that is, the battery is only in the relay discharges in the emergency state.
Another object of the present invention is to provide an emergency light and a control circuit thereof, wherein the battery is in discharging under the emergency state, and the voltage of the battery reaches when the protection voltage of the battery, the relay is disconnected the battery with the connection between the control circuits, thereby preventing the battery from being in the emergency light overdischarging under the emergency state.
Another object of the present invention is to provide an emergency light and a control circuit thereof, wherein when the electric energy of the battery is not enough to maintain the emergency state of the relay, the relay automatically switches to the normal state to disconnect the battery from the control circuit to stop the discharging of the battery.
Another object of the present invention is to provide an emergency light and a control circuit thereof, wherein the control circuit further comprises an AC-DC module electrically connected to the battery, wherein in the normal state of the relay, the battery is completely disconnected from the circuit between the control circuit, and the AC-DC module outputs the required direct current to the battery to charge the battery, that is, the battery is maintained in a charged state in the normal state.
Another object of the present invention is to provide an emergency light and its control circuit, wherein the control circuit further includes an energy storage capacitor electrically connected to the AC-DC module, wherein the AC-DC module outputs different required direct currents to the battery and the energy storage capacitor, wherein when the AC-DC module is powered off, the relay is powered by the energy storage capacitor and switched to the emergency state, thereby turning on the battery and the circuit between the control circuits.
Another object of the present invention is to provide an emergency light and a control circuit thereof, wherein the energy storage capacitor provides the electric energy for the relay to switch to the emergency state, wherein the emergency state, the battery and the control circuit switches on and outputs the electric energy to the relay to maintain the relay the emergency state to this provides a consistent and flexible state switching mode.
Another object of the present invention is to provide an emergency light and its control circuit, wherein the energy storage capacitor is completely discharged to switch the relay to the emergency state, therefore the relay is because of the battery electric energy is not enough and automatic switch to during the normal state, the relay can't by the energy storage capacitor is supplied power once more and is switched to the emergency state, thereby improving the discharging protection precision of the battery.
Another object of the present invention is to provide an emergency light and a control circuit thereof, wherein in the normal state, the relay is in the power-off state, so the relay does not lose electric energy in the normal state, and the emergency light is in the external electric energy supply state, the relay is in the normal state, so in the actual use process of the emergency light, the time that the relay is in the normal state is longer, thereby reducing the loss of the whole power of the emergency light.
Another object of the present invention is to provide an emergency light and a control circuit thereof, wherein the normal state, an external input pin of the relay is connected to a lamp panel pin and the relay is connected to a battery pin, so that the relay is in the power-off state.
Another object of the present invention is to provide an emergency light and a control circuit thereof, wherein the damage of the control circuit does not affect the lighting circuit of the emergency light.
Another object of the present invention is to provide an emergency light and a control circuit thereof, wherein the control circuit further includes an external driving power source electrically connected to the external input pin, wherein the relay is maintained in the normal state in an external power supply state, and the emergency light can be maintained in the normal illumination state by the power supplied from the external driving power source.
Another object of the present invention is to provide an emergency light and a control circuit thereof, wherein after the emergency light is tested to be qualified, the battery is disconnected with the control circuit, the connection between the AC-DC module and a commercial power is disconnected, so as to prevent the battery from discharging after the AC-DC module is powered off, thereby ensuring that the battery has sufficient electric quantity in the transportation and storage processes, and further ensuring the rate of opening the emergency light.
In order to realize above at least one purpose, the utility model provides a control circuit, include:
an external driving power supply; and
an emergency drive control circuit, wherein said emergency drive control circuit comprises an emergency drive power supply, an energy storage capacitor, and a relay electrically connected to said energy storage capacitor, wherein said relay comprises an external input pin, an emergency output pin, a blank pin, an emergency input pin, a lamp panel pin, and a battery pin and has a normal state and an emergency state, wherein said external input pin is electrically connected to said external drive power supply, wherein said emergency output pin and said emergency input pin are electrically connected to said emergency drive power supply, respectively, and said emergency input pin is electrically connected to said relay, wherein said lamp panel pin is adapted to be connected to an LED lamp panel, wherein said battery pin is adapted to be connected to a battery, wherein in said normal state said lamp panel pin is electrically connected to said external input pin such that said lamp panel LED is capable of being powered by said external drive power supply, wherein the battery pin is electrically connected to the empty pin so that the battery is completely disconnected from the emergency drive control circuit; wherein in the emergency state, the battery pin is connected with the emergency input pin, the lamp panel pin is connected with the emergency output pin, thereby the circuit between the battery and the emergency driving power supply is conducted to allow the battery to drive the LED lamp panel by the power supplied by the emergency driving power supply, and allowing the battery to be powered via the emergency input pin to maintain the emergency state of the relay, wherein when the emergency drive control circuit is powered by the required direct current, the relay maintains the normal state, the energy storage capacitor is powered to store the electric energy, when the emergency driving control circuit is powered off by the required direct current, the energy storage capacitor outputs the stored electric energy to the relay to drive the relay to be switched to the emergency state, and in the emergency state, the battery supplies power through the emergency input pin to maintain the emergency state of the relay.
In an embodiment of the present invention, the external driving power source and the emergency driving power source are integrated, wherein the required direct current is provided by the external driving power source, and the battery and the LED lamp panel are powered by the external driving power source in the normal state.
The utility model discloses an in an embodiment, wherein the external drive power supply with the emergency drive power supply is set up to same drive power supply, wherein in the normality state, when drive power supply was supplied power by required direct current, drive power supply warp external input pin power supply drive the LED lamp plate, wherein be in the emergency state, drive power supply quilt the battery warp when emergent input pin provides required direct current, drive power supply warp emergent output pin power supply drive the LED lamp plate.
In an embodiment of the present invention, the control circuit further includes an AC-DC module, wherein the AC-DC module is electrically connected to the emergency driving control circuit and the battery respectively to provide the emergency driving control circuit and the battery with the required direct current, wherein when the AC-DC module is connected to a commercial power, the AC-DC module converts the commercial power into the required direct current.
In an embodiment of the present invention, the AC-DC module includes a DC output port, wherein the DC output port outputs different required DC currents to the emergency driving control circuit and the battery, respectively.
In an embodiment of the present invention, the dc output port includes an emergency output port electrically connected to the emergency driving control circuit and a battery output port electrically connected to the battery, so that the dc output port is respectively connected to the emergency output port and the battery output port corresponding to output different required dc currents to the emergency driving control circuit and the battery.
In an embodiment of the present invention, the control circuit further includes a detection control circuit electrically connected to the AC-DC module, and when the detection control circuit detects that the input voltage of the AC-DC module is lower than the set voltage, the detection control circuit cuts off the connection between the AC-DC module and the commercial power.
In an embodiment of the present invention, the control circuit further includes a battery protection circuit electrically connected to the AC-DC module and a charging display module electrically connected to the battery protection circuit, wherein the battery protection circuit is used for preventing the battery from being charged or discharged excessively, wherein the charging display module is used for indicating the charging/discharging state of the battery.
The utility model discloses still provide an emergency light on the other hand, include:
an LED lamp panel;
a battery; and
a control circuit, wherein control circuit electricity respectively connect in the LED lamp plate with the battery includes:
an external driving power supply; and
an emergency drive control circuit, wherein the emergency drive control circuit comprises an emergency drive power supply, an energy storage capacitor and a relay electrically connected to the energy storage capacitor, wherein the relay comprises an external input pin, an emergency output pin, a blank pin, an emergency input pin, a lamp panel pin and a battery pin and has a normal state and an emergency state, wherein the external input pin is electrically connected to the external drive power supply, wherein the emergency output pin and the emergency input pin are electrically connected to the emergency drive power supply respectively, and the emergency input pin is electrically connected to the relay, wherein the lamp panel pin is electrically connected to the LED lamp panel, wherein the battery pin is electrically connected to the battery, wherein in the normal state, the lamp panel pin is electrically connected to the external input pin so that the LED lamp panel can be powered and driven by the external drive power supply, wherein the battery pin is electrically connected to the empty pin so that the battery is completely disconnected from the emergency drive control circuit; wherein in the emergency state, the battery pin is connected with the emergency input pin, the lamp panel pin is connected with the emergency output pin, thereby the circuit between the battery and the emergency driving power supply is conducted to allow the battery to drive the LED lamp panel by the power supplied by the emergency driving power supply, and allowing the battery to be powered via the emergency input pin to maintain the emergency state of the relay, wherein when the emergency drive control circuit is powered by the required direct current, the relay maintains the normal state, the energy storage capacitor is powered to store the electric energy, when the emergency driving control circuit is powered off by the required direct current, the energy storage capacitor outputs the stored electric energy to the relay to drive the relay to be switched to the emergency state, and in the emergency state, the battery supplies power through the emergency input pin to maintain the emergency state of the relay.
In an embodiment of the present invention, the external driving power source and the emergency driving power source are integrated, wherein the required direct current is provided by the external driving power source, and the battery and the LED lamp panel are powered by the external driving power source in the normal state.
The utility model discloses an in an embodiment, wherein the external drive power supply with the emergency drive power supply is set up to same drive power supply, wherein in the normality state, when drive power supply was supplied power by required direct current, drive power supply warp external input pin power supply drive the LED lamp plate, wherein be in the emergency state, drive power supply quilt the battery warp when emergent input pin provides required direct current, drive power supply warp emergent output pin power supply drive the LED lamp plate.
In an embodiment of the present invention, the control circuit further includes an AC-DC module, wherein the AC-DC module is electrically connected to the emergency driving control circuit and the battery respectively to provide the emergency driving control circuit and the battery with the required direct current, wherein when the AC-DC module is connected to a commercial power, the AC-DC module converts the commercial power into the required direct current.
In an embodiment of the present invention, the AC-DC module includes a DC output port, wherein the DC output port outputs different required DC currents to the emergency driving control circuit and the battery, respectively.
In an embodiment of the present invention, the dc output port includes an emergency output port electrically connected to the emergency driving control circuit and a battery output port electrically connected to the battery, so that the dc output port is respectively connected to the emergency output port and the battery output port corresponding to output different required dc currents to the emergency driving control circuit and the battery.
In an embodiment of the present invention, the control circuit further includes a detection control circuit electrically connected to the AC-DC module, and when the detection control circuit detects that the input voltage of the AC-DC module is lower than the set voltage, the detection control circuit cuts off the connection between the AC-DC module and the commercial power.
In an embodiment of the present invention, the control circuit further includes a battery protection circuit electrically connected to the AC-DC module and a charging display module electrically connected to the battery protection circuit, wherein the battery protection circuit is used for preventing the battery from being charged or discharged excessively, wherein the charging display module is used for indicating the charging/discharging state of the battery.
The utility model discloses still provide a control method of emergency light on the other hand, including following step:
(a) respectively outputting the required direct current to a battery and an emergency driving control circuit;
(b) the battery and an energy storage capacitor of the emergency driving control circuit store electric energy respectively;
(c) stopping outputting the required direct current to the battery and the emergency driving control circuit;
(d) the energy storage capacitor outputs electric energy to a relay of the emergency driving control circuit, so that the relay is switched to an emergency state to enable a circuit between the battery and the emergency driving control circuit as well as a circuit between the battery and an LED lamp panel to be conducted; and
(e) the emergency driving control circuit drives the LED lamp panel to illuminate by the power supplied by the battery.
In an embodiment of the present invention, wherein in the step (a), the required direct current is provided by an AC-DC module, wherein when the AC-DC module is connected to a commercial power, the AC-DC module converts the commercial power into the required direct current.
In an embodiment of the present invention, in the step (a), the AC-DC module outputs different required direct currents to the battery and the emergency driving control circuit through a battery output port and an emergency output port, respectively.
In an embodiment of the present invention, wherein the step (d) further includes the following steps:
(d1) a detection control circuit detects the input voltage of the AC-DC module; and
(d2) when the detection control circuit detects that the input voltage of the AC-DC module is lower than a set voltage, the detection control circuit cuts off the electric connection between the AC-DC module and the commercial power.
The utility model discloses an in an embodiment, wherein be in the relay emergent state, a battery pin and an emergency input pin of relay link to each other and form the battery electricity connect in emergent drive control circuit's state, an emergency output pin and a lamp plate pin of relay link to each other and form emergent drive control circuit electricity connect in the state of LED lamp plate.
In an embodiment of the present invention, in the step (e), when the battery discharges to the point that the voltage of the battery reaches the protection voltage of the battery, the relay is powered off to disconnect the battery pin and the emergency input pin, so that the battery is disconnected from the emergency driving control circuit.
The utility model discloses on the other hand still provides a storage method of emergency light, include:
(S1) testing whether the emergency lamp is qualified;
(S2) disconnecting a battery of the emergency light from an emergency drive control circuit when the emergency light is acceptable; and
(S3) disconnecting the connection between the utility power and the emergency lamp.
In an embodiment of the present invention, wherein the step (S1) further includes the steps of:
(S11) connecting a commercial power to an AC-DC module and an external driving power supply at the same time;
(S12) an LED lamp panel of the emergency lamp is lit;
(S13) simultaneously disconnecting the electrical connections between the AC-DC module and the external driving power supply and the commercial power; and
(S14) the LED lamp panel shines, and the emergency lamp is tested to be qualified.
Further objects and advantages of the invention will be fully apparent from the ensuing description and drawings.
Drawings
Fig. 1 is a schematic block diagram of a normal state of the emergency light according to a preferred embodiment of the present invention.
Fig. 2 is a block diagram schematically illustrating an emergency state of the emergency light according to a preferred embodiment of the present invention.
Fig. 3 is a circuit diagram of the emergency light according to the above preferred embodiment of the present invention.
Fig. 4 is a circuit diagram of the emergency light according to the above preferred embodiment of the present invention.
Fig. 5 is a circuit diagram of the emergency light according to the above preferred embodiment of the present invention.
Fig. 6 is a block diagram illustrating a flow of the emergency light control method according to the above preferred embodiment of the present invention.
Fig. 7 is a schematic block diagram of the flow of the emergency light storage method according to the above preferred embodiment of the present invention.
Fig. 8 is a schematic block diagram of the flow of the emergency light storage method according to the above preferred embodiment of the present invention.
Fig. 9 is a schematic block diagram of the flow of the emergency light storage method according to the above preferred embodiment of the present invention.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "vertical," "horizontal," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered limiting.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Referring to fig. 1 and 2 of the drawings, an emergency light 10 according to a preferred embodiment of the present invention is illustrated, as shown in fig. 1 and 2, the emergency light 10 includes an LED lamp panel 20, a battery 30 and a control circuit 40, wherein the control circuit 40 is electrically connected to the LED lamp panel 20 and the battery 30 respectively and includes an external driving power supply 43 and an emergency driving control circuit 42, wherein the emergency driving control circuit 42 includes an energy storage capacitor 422 and a relay 423 electrically connected to the energy storage capacitor 422, the relay 423 having a normal state and an emergency state, wherein in the normal state, the emergency driving control circuit 42 and the battery 30 are respectively powered by required direct current, the energy storage capacitor 422 and the battery 30 are respectively stored with electric energy, wherein a circuit between the battery 30 and the emergency driving control circuit 42 is maintained in an open state by the relay 423, when the emergency driving control circuit 42 is powered off by the required direct current, the relay 423 is powered by the energy storage capacitor 422 to be switched to the emergency state, and the relay 423 switches on the circuit between the battery 30 and the emergency driving control circuit 42 and switches on the circuit between the emergency driving control circuit 42 and the LED lamp panel 20, so that the battery 30 supplies power to drive the LED lamp panel 20 to illuminate.
Specifically, the control circuit 40 further includes an emergency driving power supply 421, wherein the relay 423 includes an external input pin 4231, an emergency output pin 4232, a blank pin 4233, an emergency input pin 4234, a lamp panel pin 4235 and a battery pin 4236, wherein the external input pin 4231 is electrically connected to the external driving power supply 43, wherein the emergency output pin 4232 and the emergency input pin 4234 are electrically connected to the emergency driving power supply 421 respectively, and the emergency input pin 4234 is electrically connected to the relay 423, wherein the lamp panel pin 4235 is electrically connected to the LED lamp panel 20, wherein the battery pin 4236 is electrically connected to the battery 30, wherein in the normal state, the lamp panel pin 4235 is electrically connected to the external input pin so that the LED lamp panel 20 can be driven by the external driving power supply 43, wherein the battery pin 4236 is electrically connected to the blank 4233 such that the battery 30 is completely disconnected from the emergency drive control circuit 42; wherein in the emergency state, the battery pin 4236 is connected to the emergency input pin 4234, the lamp panel pin 4235 is connected to the emergency output pin 4232, so that a circuit between the battery 30 and the emergency driving power supply 421 is conducted to allow the battery 30 to supply power to drive the LED lamp panel 20 through the emergency driving power supply 421, and allow the battery 30 to supply power to maintain the emergency state of the relay 423 through the emergency input pin 4234, wherein when the emergency driving control circuit 42 is supplied with the required direct current, the relay 423 maintains the normal state, the energy storage capacitor 422 is supplied with power to store the electric energy, and when the emergency driving control circuit 42 is stopped from supplying power by the required direct current, the energy storage capacitor 422 outputs the stored electric energy to the relay 423 to drive the relay 423 to switch to the emergency state, and maintains the emergency state of the relay 423 in the emergency state by the battery 30 being powered through the emergency input pin 4234.
It should be noted that the control circuit 40 further includes an AC-DC module 41, wherein the AC-DC module 41 is electrically connected to the emergency driving control circuit 42 and the battery 30 respectively to provide the emergency driving control circuit 42 and the battery 30 with the required direct current, and when the AC-DC module 41 is connected to a commercial power, the AC-DC module 41 converts the commercial power into the required direct current.
Furthermore, it is worth mentioning that, in an embodiment of the present invention, the external driving power supply 43 and the emergency driving power supply 421 may be integrated, that is, the emergency driving power supply 421 may be powered by the external driving power supply 43 to provide the required direct current and drive the LED lamp panel 20 through the external input pin 4231, in other words, the required direct current is provided by the external driving power supply 43, and in the normal state, the battery 30 and the LED lamp panel 20 are powered by the external driving power supply 43.
In particular, the external driving power supply 43 and the emergency driving power supply 421 may also be configured as the same driving power supply, wherein in the normal state, when the driving power supply is powered by the required direct current, that is, when the driving power supply is provided with the required direct current by the AC-DC module 41, the driving power supply is powered through the external input pin 4231 to drive the LED lamp panel 20, and in the emergency state, when the driving power supply is provided with the required direct current by the battery 30 through the emergency input pin 4234, the driving power supply is powered through the emergency output pin 4232 to drive the LED lamp panel 20.
It can be understood that, as shown in fig. 1, when the lamp panel pin 4235 of the relay 423 is connected to the external input pin 4231 and the battery pin 4236 of the relay 423 is connected to the dead leg 4233, the normal state of the relay 423 is defined, and thus it can be seen that in the normal state, since the battery 30 is connected to the dead leg 4233, the circuit between the battery 30 and the emergency driving control circuit 42 is completely in an open state, and therefore, even when the AC-DC module 41 is not energized, that is, the battery 30 is not in a charging state, the battery 30 is not excessively discharged, and thus the control circuit 40 of the present invention can effectively solve the problem that the battery 30 is damaged due to over-discharge.
On one hand, if the battery 30 and the control circuit 40 form a loop during the transportation and storage of the emergency light 10, the battery 30 will be in a discharge state all the time, so the relay 423 controls to open the circuit between the battery 30 and the control circuit 40, thereby effectively preventing the battery 30 from over-discharging during the transportation and storage; on the other hand, in the prior art, because worry can take place the situation that traditional emergency lighting can't get into the emergency state that is aroused by the battery overdischarge, so traditional emergency lighting needs regular maintenance and test, correspondingly can consume manpower and material resources, and through the utility model discloses a control circuit 40, because battery 30 is in when the normality state completely with control circuit 40 disconnection, consequently battery 30 is difficult to appear the excessive problem of discharging, so relatively the utility model discloses an emergency light 10 need not frequently maintain and test, that is to say, through the utility model discloses a control circuit 40's setting can prolong the maintenance cycle of emergency light 10.
It is understood that, in the normal state of the relay 423, the AC-DC module 41 converts the alternating current into the required direct current, and then outputs different required direct currents to the battery 30 and the energy storage capacitor 422, respectively, in other words, in the normal state of the relay 423, the battery 30 is in a charging state.
It can also be understood that when the relay 423 is in the normal state, the lamp panel pin 4235 of the relay 423 is connected to the external input pin 4231 and the battery pin 4236 of the relay 423 is connected to the blank 4233, that is, a circuit between the external driving power supply 43 and the LED lamp panel 20 is turned on, the LED lamp panel 20 can be powered by the external driving power supply 43 to illuminate, so when the emergency driving control circuit 42 is damaged and cannot drive the relay 423 to switch to the emergency state, the relay 423 is maintained in the normal state, and a circuit between the external driving power supply 43 and the LED lamp panel 20 can be maintained normal, in other words, the damage of the emergency driving control circuit 42 does not affect a lighting circuit of the emergency lamp 10.
With reference to fig. 1, the emergency driving power supply 421 is electrically connected to the emergency input pin 4234 and the emergency output pin 4232, so that in the emergency state, by connecting the battery pin 4236 and the emergency input pin 4234, a circuit between the battery 30 and the emergency driving power supply 421 is conducted, so that the battery 30 can drive the LED lamp panel 20 to illuminate by supplying power from the emergency driving power supply 421.
It is worth mentioning that, in practical application, because the circumstances that the commercial power outage appears is less, consequently the relay 423 of traditional emergency lighting fixture is in the time of normality state is longer, so the consumption of the relay 423 of traditional emergency lighting fixture can cause the waste of a large amount of electric energy resources, and the utility model discloses the relay 423 is in during the normality state, the relay 423 is in the outage state, that is to say, the relay 423 is in do not produce the consumption under the normality state, has reduced the whole consumption of emergency light 10, the consumption scope that reduces is at 0.35W-0.5W, with this the utility model provides an energy-concerving and environment-protective emergency light 10.
As shown in fig. 2, when the lamp panel pin 4235 of the relay 423 is connected to the emergency output pin 4232 and the battery pin 4236 is connected to the emergency output pin 4232, the emergency state at the relay 423 is defined, it can be understood that, when the AC-DC module 41 is powered off, the relay 423 is switched to the emergency state by the energy storage capacitor 422 providing instant power, and the emergency state of the relay 423 is maintained by the battery 30 providing power, that is, the battery 30 is continuously discharged when the relay 423 is in the emergency state, and simultaneously provides power output for the relay 423 and the LED lamp panel 20, it is worth mentioning that, when the discharge of the battery 30 reaches the discharge protection voltage of the battery 30, the relay 423 is powered off and automatically returns to the normal state, i.e., the state where the external input pin 4231 of the relay 423 is connected to the lamp panel pin 4235 and the battery pin 4236 is connected to the dead leg 4233, the battery 30 is completely disconnected from the emergency driving control circuit 42 at this time to prevent the battery 30 from being over-discharged. It is also understood that when the battery 30 is discharged to the point where the battery 30 is not sufficiently discharged to maintain the emergency state of the relay 423, the relay 423 automatically switches to the normal state to prevent the battery 30 from being over-discharged.
It should be noted that, when the battery 30 is discharged to a certain extent, the relay 423 may automatically switch to return to the normal state, so that the battery 30 may be disconnected from the emergency drive control circuit 42 in time, and is in a completely disconnected state, and when the AC-DC module 41 is not connected to the commercial power, that is, when the energy storage capacitor 422 is not powered, the relay 423 may not switch to the emergency state for a second time, that is, the battery 30 may not generate an unstable state when discharging in the emergency state, so that the discharging protection accuracy of the battery 30 is improved.
Preferably, in the preferred embodiment of the present invention, wherein the control circuit 40 is implemented as the circuit shown in fig. 3, wherein the energy storage capacitor 422 is implemented as the capacitor C9 in the circuit shown in fig. 3, wherein the AC-DC module 41 is electrically connected to the capacitor C9, the capacitor C9 stores a small amount of power, when the AC-DC module 41 is disconnected from the mains, the capacitor C9 discharges to switch the relay 423 to the emergency state, and since the power of the capacitor C9 is rapidly discharged due to the absence of the power supply of the AC-DC module 41 during the power-off period, the emergency state of the relay 423 is maintained by the power supplied from the battery 30, so that when the power of the battery 30 is insufficient to maintain the emergency state of the relay 423, the battery 30 is completely disconnected from the control circuit 40, at this time, since the electric energy in the capacitor C9 is completely discharged and the relay 423 cannot be switched to the emergency state by the secondary power supply of the capacitor C9, the battery 30 can be maintained in a completely disconnected state from the control circuit 40, and therefore, in practical applications, the battery 30 and the control circuit 40 are in a completely disconnected state, so that a state in which the lighting circuit is repeatedly turned on does not occur, and on one hand, the emergency lamp 10 does not enter an abnormal flickering state, and on the other hand, the battery 30 is not excessively discharged due to the repeated turning on of the lighting circuit.
Furthermore, it is worth mentioning that, in some embodiments of the present invention, the control circuit 40 may also control the circuit that cuts off the relay 423 and the battery 30 via a central processing module, so as to avoid the over-discharge of the battery 30, which is not limited by the present invention.
Further, the control circuit 40 further includes a detection control circuit 44 electrically connected to the AC-DC module 41, when the detection control circuit 44 detects that the input voltage of the AC-DC module 41 is lower than the set voltage, the detection control circuit 44 cuts off the electrical connection between the AC-DC module 41 and the utility power, preferably, when the detection control circuit 44 detects that the input voltage of the AC-DC module 41 is lower than 85% of the set voltage, the detection control circuit 44 cuts off the electrical connection between the AC-DC module 41 and the utility power, so that the relay 423 is switched to the emergency state.
It is worth mentioning that the AC-DC module 41 includes a DC output port 410, wherein the DC output port 410 outputs different required DC currents to the emergency driving control circuit 42 and the battery 30, respectively.
Preferably, the AC-DC module 41 and the detection control circuit 44 can be implemented as the circuit shown in fig. 4. In the preferred embodiment of the present invention, the AC-DC module 41 includes two DC output ports 410, specifically, the AC-DC module 41 includes a battery output port 411 and an emergency output port 412, and the AC-DC module 41 outputs different required DC currents to the battery 30 and the emergency driving control circuit 42 through the battery output port 411 and the emergency output port 412, respectively.
It should be noted that the control circuit 40 further includes a battery protection circuit 45 electrically connected to the AC-DC module 41 and a charging display module 46 electrically connected to the battery protection circuit 45, wherein the battery protection circuit 45 is used for preventing the battery 30 from being overcharged, and the charging display module 46 is used for indicating the charging and discharging states of the battery 30.
Preferably, the battery protection circuit 45 and the charging display module 46 are implemented as a circuit as shown in fig. 5.
As shown in fig. 6, in another aspect, the present invention provides a method for controlling an emergency light 10, comprising the steps of:
(a) respectively outputting the required direct current to a battery 30 and an emergency driving control circuit 42;
(b) the battery 30 and an energy storage capacitor 422 of the emergency driving control circuit 42 store electric energy respectively;
(c) stopping outputting the required direct current to the battery 30 and the emergency drive control circuit 42;
(d) the energy storage capacitor 422 outputs electric energy to a relay 423 of the emergency driving control circuit 42, so as to switch the relay 423 to an emergency state, so that the circuits between the battery 30 and the emergency driving control circuit 42 and between the LED lamp panels 20 are turned on; and
(e) the emergency driving control circuit 42 drives the LED lamp panel 20 to illuminate by the power supplied by the battery 30.
It is worth mentioning that, in the step (a), the required direct current is provided by an AC-DC module 41, wherein when the AC-DC module 41 is connected to a commercial power, the AC-DC module 41 converts the commercial power into the required direct current.
It should be noted that the AC-DC module 41 includes a battery output port 411 and an emergency output port 412, and the AC-DC module 41 outputs different required direct currents to the battery 30 and the emergency driving control circuit 42 through the battery output port 411 and the emergency output port 412, respectively.
It should be noted that in the emergency state of the relay 423, a battery pin 4236 and an emergency input pin 4234 of the relay 423 are connected to form a state that the battery 30 is electrically connected to the emergency driving control circuit 42, and an emergency output pin 4232 and a lamp panel pin 4235 of the relay 423 are connected to form a state that the emergency driving control circuit 42 is electrically connected to the LED lamp panel 20.
In particular, in the step (e), when the battery 30 is discharged until the voltage of the battery 30 reaches the protection voltage of the battery 30, the relay 423 is powered off to disconnect the battery pin 4236 and the emergency input pin 4234, so that the battery 30 is disconnected from the emergency driving control circuit 42.
It is also understood that when the amount of electricity discharged from the battery 30 to the battery 30 is not sufficient to maintain the emergency state of the relay 423, the relay 423 is automatically switched to the normal state, so that the circuit between the battery 30 and the emergency drive control circuit 42 is opened.
Thus further wherein said step (d) further comprises the steps of:
(d1) a detection control circuit 44 detects an input voltage of the AC-DC module 41; and
(d2) when the detection control circuit 44 detects that the input voltage of the AC-DC module 41 is lower than the set voltage, the detection control circuit 44 cuts off the electrical connection between the AC-DC module 41 and the commercial power.
Preferably, when the control circuit 44 detects that the input voltage of the AC-DC module 41 is lower than 85% of the set voltage, the detection control circuit 44 cuts off the electrical connection between the AC-DC module 41 and the commercial power, so that the AC-DC module 41 stops the output of the required direct current to the emergency drive control circuit 42 and the battery 30.
As shown in fig. 7 to 9, the present invention provides a method for storing an emergency light 10, comprising:
(S1) testing whether the emergency light 10 is qualified;
(S2) disconnecting a battery 30 of the emergency light 10 from an emergency drive control circuit 42 when the emergency light 10 is qualified; and
(S3) disconnecting the connection between the mains and the emergency light 10.
In practical applications, the emergency light 10 is produced and then tested for product acceptability. As shown in fig. 7, the test procedure of the emergency lamp 10 is that, firstly, the AC-DC module 41 of the emergency lamp 10 is connected to a commercial power, and it is observed whether the emergency lamp 10 is lighted, if the emergency lamp 10 is not lighted, the emergency lamp 10 is not qualified, if the emergency lamp 10 is lighted, the next test is performed, the connection between the AC-DC module 41 and the commercial power is disconnected, if the emergency lamp 10 is not lighted, the product is not qualified, and if the emergency lamp 10 is lighted, the product test is qualified. After the AC-DC module 41 is powered off, that is, after the product test is finished, the circuit between the battery 30 and the emergency drive control circuit 42 is in a conducting state, in the transportation process, the circuit between the battery 30 and the emergency drive control circuit needs to be disconnected, but since the battery 30 also consumes a certain amount of electric energy during the test, the AC-DC module 41 needs to be connected with the commercial power again to charge the battery 30, when the battery 30 is fully charged, the battery 30 is disconnected, the AC-DC module 41 is disconnected from the commercial power, and finally the battery 30 is reconnected, so that the battery 30 can be guaranteed to leave the factory with sufficient electric energy, and the situation that the battery 30 is excessively discharged in the transportation and storage processes is prevented.
Therefore, the step (S1) further includes a testing method of the emergency light 10, wherein the step (S1) further includes the steps of:
(S11) connecting a commercial power to the AC-DC module 41 and an external driving power supply 43 at the same time;
(S12) an LED lamp panel 20 of the emergency lamp 10 is lighted;
(S13) simultaneously disconnecting the electrical connections between the AC-DC module 41 and the external driving power supply 43 and the commercial power; and
(S14) the LED lamp panel 20 is lighted, and the emergency lamp 10 is tested to be qualified.
It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.
Claims (16)
1. A control circuit, comprising:
an external driving power supply; and
an emergency drive control circuit, wherein said emergency drive control circuit comprises an emergency drive power supply, an energy storage capacitor, and a relay electrically connected to said energy storage capacitor, wherein said relay comprises an external input pin, an emergency output pin, a blank pin, an emergency input pin, a lamp panel pin, and a battery pin and has a normal state and an emergency state, wherein said external input pin is electrically connected to said external drive power supply, wherein said emergency output pin and said emergency input pin are electrically connected to said emergency drive power supply, respectively, and said emergency input pin is electrically connected to said relay, wherein said lamp panel pin is adapted to be connected to an LED lamp panel, wherein said battery pin is adapted to be connected to a battery, wherein in said normal state said lamp panel pin is electrically connected to said external input pin such that said lamp panel LED is capable of being powered by said external drive power supply, wherein the battery pin is electrically connected to the empty pin so that the battery is completely disconnected from the emergency drive control circuit; wherein in the emergency state, the battery pin is connected with the emergency input pin, the lamp panel pin is connected with the emergency output pin, thereby the circuit between the battery and the emergency driving power supply is conducted to allow the battery to drive the LED lamp panel by the power supplied by the emergency driving power supply, and allowing the battery to be powered via the emergency input pin to maintain the emergency state of the relay, wherein when the emergency drive control circuit is powered by the required direct current, the relay maintains the normal state, the energy storage capacitor is powered to store the electric energy, when the emergency driving control circuit is powered off by the required direct current, the energy storage capacitor outputs the stored electric energy to the relay to drive the relay to be switched to the emergency state, and in the emergency state, the battery supplies power through the emergency input pin to maintain the emergency state of the relay.
2. The control circuit of claim 1, wherein the external driving power supply and the emergency driving power supply are provided as an integrated body, wherein the required direct current is provided by the external driving power supply, and in the normal state, the battery and the LED lamp panel are powered by the external driving power supply.
3. The control circuit of claim 1, wherein the external driving power supply and the emergency driving power supply are configured as a same driving power supply, wherein in the normal state, the driving power supply is powered through the external input pin to drive the LED lamp panel when the driving power supply is powered by the required direct current, and wherein in the emergency state, the driving power supply is powered through the emergency output pin to drive the LED lamp panel when the driving power supply is powered by the battery to provide the required direct current through the emergency input pin.
4. The control circuit of claim 1 or 3, wherein the control circuit further comprises an AC-DC module, wherein the AC-DC module is electrically connected to the emergency drive control circuit and the battery to provide the required direct current to the emergency drive control circuit and the battery, respectively, and wherein when the AC-DC module is connected to a utility power supply, the AC-DC module converts the utility power supply into the required direct current.
5. The control circuit of claim 4, wherein the AC-DC module includes a DC output port, wherein the DC output port outputs different desired DC currents to the emergency drive control circuit and the battery, respectively.
6. The control circuit of claim 5, wherein the DC output port comprises an emergency output port electrically connected to the emergency drive control circuit and a battery output port electrically connected to the battery, such that the DC output port outputs different required DC currents to the emergency drive control circuit and the battery through the emergency output port and the battery output port, respectively.
7. The control circuit of claim 6, wherein the control circuit further comprises a detection control circuit electrically connected to the AC-DC module, wherein the detection control circuit cuts off the connection between the AC-DC module and the utility power when the detection control circuit detects that the input voltage of the AC-DC module is lower than a set voltage.
8. The control circuit of claim 7, wherein the control circuit further comprises a battery protection circuit electrically connected to the AC-DC module and a charge display module electrically connected to the battery protection circuit, wherein the battery protection circuit is configured to prevent overcharging of the battery, and wherein the charge display module is configured to indicate a charging/discharging state of the battery.
9. An emergency light, comprising:
an LED lamp panel;
a battery; and
a control circuit, wherein control circuit electricity respectively connect in the LED lamp plate with the battery includes:
an external driving power supply; and
an emergency drive control circuit, wherein the emergency drive control circuit comprises an emergency drive power supply, an energy storage capacitor and a relay electrically connected to the energy storage capacitor, wherein the relay comprises an external input pin, an emergency output pin, a blank pin, an emergency input pin, a lamp panel pin and a battery pin and has a normal state and an emergency state, wherein the external input pin is electrically connected to the external drive power supply, wherein the emergency output pin and the emergency input pin are electrically connected to the emergency drive power supply respectively, and the emergency input pin is electrically connected to the relay, wherein the lamp panel pin is electrically connected to the LED lamp panel, wherein the battery pin is electrically connected to the battery, wherein in the normal state, the lamp panel pin is electrically connected to the external input pin so that the LED lamp panel can be powered and driven by the external drive power supply, wherein the battery pin is electrically connected to the empty pin so that the battery is completely disconnected from the emergency drive control circuit; wherein in the emergency state, the battery pin is connected with the emergency input pin, the lamp panel pin is connected with the emergency output pin, thereby the circuit between the battery and the emergency driving power supply is conducted to allow the battery to drive the LED lamp panel by the power supplied by the emergency driving power supply, and allowing the battery to be powered via the emergency input pin to maintain the emergency state of the relay, wherein when the emergency drive control circuit is powered by the required direct current, the relay maintains the normal state, the energy storage capacitor is powered to store the electric energy, when the emergency driving control circuit is powered off by the required direct current, the energy storage capacitor outputs the stored electric energy to the relay to drive the relay to be switched to the emergency state, and in the emergency state, the battery supplies power through the emergency input pin to maintain the emergency state of the relay.
10. The emergency lamp of claim 9, wherein the external driving power supply and the emergency driving power supply are provided as an integrated body, wherein the required direct current is provided by the external driving power supply, and in the normal state, the battery and the LED lamp panel are powered by the external driving power supply.
11. The emergency lamp according to claim 9, wherein the external driving power supply and the emergency driving power supply are configured as a same driving power supply, wherein in the normal state, the driving power supply is powered through the external input pin to drive the LED lamp panel when the driving power supply is powered by the required direct current, and wherein in the emergency state, the driving power supply is powered through the emergency output pin to drive the LED lamp panel when the driving power supply is powered by the battery to provide the required direct current through the emergency input pin.
12. The emergency light of claim 9 or 11, wherein the control circuit further comprises an AC-DC module, wherein the AC-DC module is electrically connected to the emergency drive control circuit and the battery to provide the required direct current to the emergency drive control circuit and the battery, respectively, wherein when the AC-DC module is connected to a utility power supply, the AC-DC module converts the utility power supply into the required direct current.
13. The emergency light of claim 12, wherein the AC-DC module includes a DC output port, wherein the DC output port outputs different required DC currents to the emergency drive control circuit and the battery, respectively.
14. The emergency light of claim 13, wherein the dc output port comprises an emergency output port electrically connected to the emergency drive control circuit and a battery output port electrically connected to the battery, such that the dc output port outputs different required dc currents to the emergency drive control circuit and the battery via the emergency output port and the battery output port, respectively.
15. The emergency lamp of claim 14, wherein the control circuit further comprises a detection control circuit electrically connected to the AC-DC module, the detection control circuit disconnecting the AC-DC module from the utility power when the detection control circuit detects that the input voltage of the AC-DC module is lower than a set voltage.
16. The emergency light of claim 15, wherein the control circuit further comprises a battery protection circuit electrically connected to the AC-DC module and a charge display module electrically connected to the battery protection circuit, wherein the battery protection circuit is configured to prevent overcharging of the battery, wherein the charge display module is configured to indicate a charging and discharging state of the battery.
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| CN201921049093.1U CN210491293U (en) | 2019-07-05 | 2019-07-05 | Emergency lamp and control circuit thereof |
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| CN201921049093.1U CN210491293U (en) | 2019-07-05 | 2019-07-05 | Emergency lamp and control circuit thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110248455A (en) * | 2019-07-05 | 2019-09-17 | 深圳迈睿智能科技有限公司 | Emergency light and its control circuit and control method and storage method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110248455A (en) * | 2019-07-05 | 2019-09-17 | 深圳迈睿智能科技有限公司 | Emergency light and its control circuit and control method and storage method |
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