WO2021003854A1

WO2021003854A1 - Emergency lamp, control circuit and control method therefor, and storage method

Info

Publication number: WO2021003854A1
Application number: PCT/CN2019/108375
Authority: WO
Inventors: 邹高迪; 王首富; 古连叶
Original assignee: 深圳迈睿智能科技有限公司
Priority date: 2019-07-05
Filing date: 2019-09-27
Publication date: 2021-01-14
Also published as: CN110248455A

Abstract

Disclosed are an emergency lamp, a control circuit and a control method therefor, and a storage method. The emergency lamp comprises an 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 to the AC-DC module; the emergency drive control circuit comprises an energy storage capacitor and a relay electrically connected to the energy storage capacitor; the relay has a normal state and an emergency state; in the normal state, the AC-DC module respectively outputs a required direct current to the emergency drive control circuit and the battery, and the relay disconnects a circuit between the battery and the emergency drive control circuit; and when the AC-DC module is powered off, the relay is powered by the energy storage capacitor to switch to the emergency state, and the relay conducts the circuit between the battery and the emergency drive control circuit, so that the battery supplies power to drive the LED lamp panel to illuminate.

Description

Emergency light and its control circuit, control method and storage method

Technical field

The present invention relates to the field of emergency lighting, and in particular to an emergency light and its control circuit, control method and storage method. The control method and the storage method can prevent over-discharge of a battery of the emergency light to improve the The unpacking qualification rate of the emergency light can also reduce the overall power consumption of the emergency light in the standby state.

Background technique

Emergency luminaire is a kind of lighting luminaire activated due to the failure of the normal lighting power supply. Generally, emergency luminaires use batteries as their own power supply to provide electrical output for the circuit and lighting of the emergency luminaire when the normal lighting power supply fails. During the transportation and storage process after the emergency luminaire is produced, the battery of the emergency luminaire is still connected to part of the circuit and has a certain energy consumption, that is, in the state of no external power supply, such as long-term transportation of the emergency luminaire During the process of storage and storage, or long-term emergency lighting, the battery of the existing emergency lamp will always be in a discharged state. When the battery is discharged for a long time and cannot be charged in time, there is a risk of the battery being scrapped due to over-discharge. In order to overcome such risks, in the transportation and storage stage of emergency lighting, the current industry mainly installs and puts emergency lighting into use within the effective time of the battery, such as within half a year, to ensure that the battery can be charged in time to prevent the battery Excessive discharge. However, it is difficult to accurately control the time between the production of emergency lamps and their putting into use, and the transportation time and storage time are difficult to be accurately controlled within the time range when the battery is fully discharged. For example, when emergency lamps need to be shipped overseas, they cannot Avoid long transportation. In the long-term emergency lighting state of emergency lamps, the current industry mainly monitors the battery voltage of emergency lamps. When the battery voltage of emergency lamps is lower than a certain value, the power output of the battery to the lighting is disconnected. The battery is still connected to part of the circuit and has a certain amount of energy consumption. When the external power supply is continuously disconnected, the battery will also be over-discharged. Therefore, this method cannot solve the root cause of the battery over-discharge. problem. What's more serious is that when the battery of the emergency luminaire is damaged due to excessive discharge, the entire emergency luminaire cannot be put into use normally, which will cause the problem of low unboxing qualification rate of the emergency luminaire and increased battery scrap rate.

It is worth mentioning that, under normal circumstances, the emergency lamps generally use nickel-cadmium batteries, and nickel-cadmium batteries are generally not equipped with protective plates. Therefore, during the long-term transportation and storage of nickel-cadmium batteries, nickel-cadmium batteries are easily damaged. Discharge and damage, resulting in the entire emergency lighting can not be put into use, which will cause a lot of loss. In addition, because the nickel-cadmium battery will have a certain voltage rise after the discharge is stopped, in the long-term emergency lighting state of the emergency lamp, when the battery voltage of the emergency lamp is lower than a certain value and the battery's power output for lighting is disconnected, The rise in battery voltage may cause the battery of the existing emergency lighting fixture to continue to conduct repeatedly with the lighting circuit of the lighting fixture when the actual power is low, causing the lighting fixture to enter a flickering abnormal state and further increase the energy consumption of the battery , And then speed up the battery over-discharge and damage the battery.

Summary of the invention

An object of the present invention is to provide an emergency light and its control circuit, control method and storage method, wherein the emergency light includes a battery, wherein the control circuit can effectively prevent the battery from over-discharge through the control method The problem.

Another object of the present invention is to provide an emergency light and its control circuit, control method and storage method, wherein the control circuit includes a relay, wherein the relay has a normal state, wherein in the normal state, all The relay completely disconnects the circuit 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 its control circuit, control method and storage method, wherein in the normal state, the battery is connected to an empty pin of the relay, so the battery and the control circuit The circuit in between is maintained in a completely disconnected state, so the battery will not lose power in the normal state.

Another object of the present invention is to provide an emergency light and its control circuit, control method and storage method, wherein in the normal state, the circuit between the battery and the control circuit is completely disconnected, and the battery is not The problem of excessive discharge is prone to occur, so the emergency light does not need frequent maintenance and testing.

Another object of the present invention is to provide an emergency light and its control circuit, control method and storage method, wherein only in the emergency state, the relay conducts the circuit between the control circuit and the battery In other words, the battery is only discharged in the emergency state of the relay.

Another object of the present invention is to provide an emergency light and its control circuit, control method and storage method, wherein the battery is discharged in the emergency state, and when the voltage of the battery reaches the protection voltage of the battery At this time, the relay disconnects the connection between the battery and the control circuit, thereby preventing the battery from over-discharging in the emergency state of the emergency light.

Another object of the present invention is to provide an emergency light and its control circuit, control method and storage method, wherein when the power of the battery is insufficient to maintain the emergency state of the relay, the relay automatically switches to the In the normal state, the connection between the battery and the control circuit is disconnected to stop the discharge of the battery.

Another object of the present invention is to provide an emergency light and its control circuit, control method and storage method, wherein the control circuit further includes an AC-DC module electrically connected to the battery, wherein In the normal state, the circuit between the battery and the control circuit is completely disconnected, and the AC-DC module outputs the required direct current to the battery to charge the battery, that is, the battery is in the In the normal state, it is maintained in a charged state.

Another object of the present invention is to provide an emergency light and its control circuit, control method and storage method, wherein the control loop further includes an energy storage capacitor electrically connected to the AC-DC module, wherein the AC- The DC module respectively 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 to switch to the emergency state, Thus, the circuit between the battery and the control circuit is turned on.

Another object of the present invention is to provide an emergency light and its control circuit, control method and storage method, wherein the energy storage capacitor provides electrical energy to the relay to switch to the emergency state, wherein in the emergency state, The battery is connected to the control circuit and outputs electrical energy to the relay to maintain the emergency state of the relay, thereby providing a consistent and flexible state switching method.

Another object of the present invention is to provide an emergency light and its control circuit, control method and storage method, wherein the energy storage capacitor is completely discharged to switch the relay to the emergency state, so the relay is due to the When the battery power is insufficient and automatically switches to the normal state, the relay cannot be powered by the energy storage capacitor again and is switched to the emergency state, thereby improving the discharge protection accuracy of the battery.

Another object of the present invention is to provide an emergency light and its control circuit, control method and storage method, wherein in the normal state, the relay is in a de-energized state, so the relay does not consume electrical energy in the normal state , And the emergency light is in the state of external power supply, the relay is in the normal state, so in the actual use of the emergency light, the relay is in the normal state for a longer time, thereby reducing the emergency The overall power loss of the lamp.

Another object of the present invention is to provide an emergency light and its control circuit, control method and storage method, wherein in the normal state, an external input pin of the relay is connected to a light board pin and the relay The empty pin is connected to a battery pin, so that the relay is in a power-off state.

Another object of the present invention is to provide an emergency light and its control circuit, control method and storage method, 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 its control circuit, control method and storage method, wherein the control circuit further includes an external driving power supply electrically connected to the external input pin, wherein the external power supply In the state, the relay is maintained in the normal state, and the emergency light can be maintained in the normal lighting state by the external driving power supply.

Another object of the present invention is to provide an emergency light and its control circuit, control method and storage method, wherein after the emergency light is tested and passed, the connection between the battery and the control circuit is first disconnected Disconnecting the AC-DC module from a mains power supply can prevent the battery from discharging after the AC-DC module is powered off, thereby ensuring that the battery has sufficient power during transportation and storage. , Thereby ensuring the unpacking rate of the emergency light.

In order to achieve at least one of the above objectives, the present invention provides a control circuit including:

An external drive power supply; and

An emergency drive control circuit, wherein the emergency drive control circuit includes an emergency drive power supply, an energy storage capacitor, and a relay electrically connected to the energy storage capacitor, wherein the relay includes an external input pin and an emergency output Pins, an empty pin, an emergency input pin, a light board pin, and a battery pin and have a normal state and an emergency state, wherein the external input pin is electrically connected to the external driving power supply, wherein all The emergency output pin and the emergency input pin are respectively electrically connected to the emergency driving power supply, and the emergency input pin is electrically connected to the relay, wherein the light board pin is suitable for connecting to an LED light Board connection, wherein the battery pin is adapted to be connected to a battery, wherein in the normal state, the light board pin is electrically connected to the external input pin so that the LED light board can be connected to the external The driving power supply provides power for driving, 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 to the emergency The input pin is connected, and the light board pin is connected to the emergency output pin, so that the circuit between the battery and the emergency drive power source is turned on to allow the battery to be powered by the emergency drive power source Drive the LED light board and allow the battery to supply power 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 all In the normal state, the energy storage capacitor is powered to store electrical energy, and when the emergency drive control circuit is stopped by the required direct current, the energy storage capacitor outputs the stored electrical energy to the relay to drive the relay Switch to the emergency state, and maintain the emergency state of the relay by the battery through the emergency input pin in the emergency state.

In an embodiment of the present invention, wherein the external driving power supply and the emergency driving power supply are integrated, and the required direct current is provided by the external driving power supply, and in the normal state, the battery and The LED light board is powered by the external driving power supply.

In an embodiment of the present invention, wherein the external driving power supply and the emergency driving power supply are set as the same driving power supply, wherein in the normal state, when the driving power supply is powered by the required direct current power, the driving power supply The LED light board is powered by the external input pin, wherein in the emergency state, when the driving power is supplied by the battery via the emergency input pin to provide the required direct current, the driving power is The emergency output pin supplies power to drive the LED light board.

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 drive control circuit and the battery to control the emergency drive The circuit and the battery provide the required direct current, wherein when the AC-DC module is connected to a mains power, the AC-DC module converts the mains into the required direct current.

In an embodiment of the present invention, the AC-DC module includes a DC output port, and the DC output port respectively outputs different required DC power to the emergency drive control circuit and the battery.

In an embodiment of the present invention, the DC output port includes an emergency output port electrically connected to the emergency drive control circuit and a battery output port electrically connected to the battery, so that the DC output port The emergency output port and the battery output port respectively output different required direct currents to the emergency drive 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 design When the voltage is constant, the detection control circuit cuts off the connection between the AC-DC module and the mains.

In an embodiment of the present invention, wherein 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 The circuit is used to prevent the battery from overcharging and discharging, and the charging display module is used to indicate the charging and discharging state of the battery.

In another aspect, the present invention also provides an emergency light, including:

One LED light board;

A battery; and

A control circuit, wherein the control circuit is electrically connected to the LED light board and the battery and includes:

An external drive power supply; and

An emergency drive control circuit, wherein the emergency drive control circuit includes an emergency drive power supply, an energy storage capacitor, and a relay electrically connected to the energy storage capacitor, wherein the relay includes an external input pin and an emergency output Pins, an empty pin, an emergency input pin, a light board pin, and a battery pin and have a normal state and an emergency state, wherein the external input pin is electrically connected to the external driving power supply, wherein all The emergency output pin and the emergency input pin are respectively electrically connected to the emergency drive power supply, and the emergency input pin is electrically connected to the relay, wherein the light board pin is electrically connected to the LED The light board, wherein the battery pin is electrically connected to the battery, and in the normal state, the light board pin is electrically connected to the external input pin so that the LED light board can be The driving power supply provides power for driving, 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 to the emergency The input pin is connected, and the light board pin is connected to the emergency output pin, so that the circuit between the battery and the emergency drive power source is turned on to allow the battery to be powered by the emergency drive power source Drive the LED light board and allow the battery to supply power 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 all In the normal state, the energy storage capacitor is powered to store electrical energy, and when the emergency drive control circuit is stopped by the required direct current, the energy storage capacitor outputs the stored electrical energy to the relay to drive the relay Switch to the emergency state, and maintain the emergency state of the relay by the battery through the emergency input pin in the emergency state.

In another aspect, the present invention also provides an emergency light control method, including the following steps:

(a) Output the required DC power to a battery and an emergency drive control circuit respectively;

(b) The battery and an energy storage capacitor of the emergency drive control circuit respectively store electrical energy;

(c) Stop outputting the required direct current to the battery and the emergency drive control circuit;

(d) The energy storage capacitor outputs electric energy to a relay of the emergency drive control circuit, thereby switching the relay to an emergency state so that the battery and the emergency control drive circuit and an LED light board The circuit is turned on; and

(e) The emergency drive control circuit is powered by the battery to drive the LED light panel to illuminate.

In an embodiment of the present invention, 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 mains, the AC-DC The module converts the mains 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 battery through a battery output port and an emergency output port, respectively Emergency drive control circuit.

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 the set voltage, the detection control circuit cuts off the electrical connection between the AC-DC module and the mains.

In an embodiment of the present invention, in the emergency state of the relay, a battery pin of the relay is connected to an emergency input pin to form an electrical connection between the battery and the emergency drive control circuit. State, an emergency output pin of the relay is connected to a light board pin to form a state where the emergency drive control circuit is electrically connected to the LED light board.

In an embodiment of the present invention, wherein in the step (e), when the battery is discharged until the voltage of the battery reaches the protection voltage of the battery, the relay is de-energized to cause the battery to lead The pin is disconnected from the emergency input pin, so that the battery is disconnected from the emergency drive control circuit.

In another aspect, the present invention also provides a storage method for emergency lights, including:

(S1) Test whether the emergency light is qualified;

(S2) When the emergency light is qualified, disconnect the connection between a battery of the emergency light and an emergency drive control circuit; and

(S3) Disconnect the connection between the mains and the emergency light.

In an embodiment of the present invention, the step (S1) further includes the following steps:

(S11) Connect an AC-DC module and an external drive power to a mains at the same time;

(S12) An LED light board of the emergency light is on;

(S13) Simultaneously disconnect the electrical connection between the AC-DC module and the external drive power supply and the mains; and

(S14) The LED light board lights up, and the emergency light passes the test.

Through the understanding of the following description and the drawings, the further objectives and advantages of the present invention will be fully embodied.

Description of the drawings

Fig. 1 is a structural schematic block diagram of a normal state of the emergency light according to a preferred embodiment of the present invention.

Fig. 2 is a structural schematic block diagram of 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-mentioned preferred embodiment of the present invention.

Fig. 4 is a circuit diagram of the emergency light according to the above-mentioned preferred embodiment of the present invention.

Fig. 5 is a circuit diagram of the emergency light according to the above-mentioned preferred embodiment of the present invention.

Fig. 6 is a schematic block diagram of the flow of the emergency light control method according to the above-mentioned preferred embodiment of the present invention.

Fig. 7 is a schematic block diagram of the process of the storage method of the emergency light according to the above preferred embodiment of the present invention.

Fig. 8 is a schematic block diagram of the process of the storage method of the emergency light according to the above preferred embodiment of the present invention.

Fig. 9 is a schematic block diagram of the process of the storage method of the emergency light according to the above-mentioned preferred embodiment of the present invention.

Detailed ways

The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

Those skilled in the art should understand that, in the disclosure of the present invention, the terms "vertical", "lateral", "upper", "lower", "front", "rear", "left", "right", The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention And to simplify the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so the above terms should not be understood as limiting the present invention.

It can be understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in other embodiments, The number can be multiple, and the term "one" cannot be understood as a restriction on the number.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise clearly specified and limited. For example, they can be fixed or detachable. Connected or integrally connected; it can be mechanically connected, or electrically connected or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction of two components relationship. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present invention can be understood according to specific circumstances.

1 and 2 of the drawings, an emergency light 10 according to a preferred embodiment of the present invention is illustrated. As shown in FIGS. 1 and 2, the emergency light 10 includes an LED light board 20 and a battery 30 and a control circuit 40, wherein the control circuit 40 is electrically connected to the LED light board 20 and the battery 30 and includes an external drive power source 43 and an emergency drive control circuit 42, wherein the emergency drive control circuit 42 includes an energy storage capacitor 422 and a relay 423 electrically connected to the energy storage capacitor 422. The relay 423 has a normal state and an emergency state. In the normal state, the emergency drive control circuit 42 and The battery 30 is powered by the required DC power, and the energy storage capacitor 422 and the battery 30 store electrical energy respectively, wherein the circuit between the battery 30 and the emergency drive control circuit 42 is maintained off by the relay 423 In the open state, when the emergency drive control circuit 42 is stopped by the required direct current, the relay 423 is powered by the energy storage capacitor 422 to switch to the emergency state, and the relay 423 turns on the battery 30 The circuit between the emergency drive control circuit 42 and the emergency drive control circuit 42 also conducts the circuit between the emergency drive control circuit 42 and the LED light board 20, so that the battery 30 supplies power to drive the LED light board 20 to illuminate.

Specifically, the control circuit 40 further includes an emergency drive power supply 421, wherein the relay 423 includes an external input pin 4231, an emergency output pin 4232, an empty pin 4233, an emergency input pin 4234, and a light Board pin 4235 and a battery pin 4236, wherein the external input pin 4231 is electrically connected to the external drive power source 43, wherein the external input pin 4231 is electrically connected to the external drive power source 43, wherein the The emergency output pin 4232 and the emergency input pin 4234 are respectively electrically connected to the emergency drive power supply 421, and the emergency input pin 4234 is electrically connected to the relay 423, wherein the light board pin 4235 is electrically connected Is connected to the LED light board 20, wherein the battery pin 4236 is electrically connected to the battery 30, and in the normal state, the light board pin 4235 is electrically connected to the external input pin so that the The LED light board 20 can be powered and driven by the external driving power source 43, wherein the battery pin 4236 is electrically connected to the empty pin 4233 so 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, and the light board pin 4235 is connected to the emergency output pin 4232, so that the battery 30 is connected to the emergency drive power supply The circuit between 421 is turned on to allow the battery 30 to drive the LED light board 20 via the emergency drive power supply 421, and to allow the battery 30 to supply power via the emergency input pin 4234 to maintain the relay The emergency state of 423, wherein when the emergency drive control circuit 42 is powered by the required direct current, the relay 423 maintains the normal state, the energy storage capacitor 422 is powered to store electrical energy, and when the emergency When the drive control circuit 42 is stopped by the required DC power, 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 in the emergency state by all The battery 30 is powered by the emergency input pin 4234 to maintain the emergency state of the relay 423.

It is worth mentioning that the control circuit 40 further includes an AC-DC module 41, wherein the AC-DC module 41 is electrically connected to the emergency drive control circuit 42 and the battery 30 to provide The emergency drive control circuit 42 and the battery 30 provide the required direct current power. When the AC-DC module 41 is connected to a mains power, the AC-DC module 41 converts the mains power into the required direct current.

In addition, it is also worth mentioning that, in an embodiment of the present invention, the external drive power source 43 and the emergency drive power source 421 may be configured to be integrated, that is, the emergency drive power source 421 may be The external drive power supply 43 provides the required direct current and drives the LED light board 20 through the external input pin 4231. In other words, the required direct current is provided by the external drive power 43 and is in the normal state. The battery 30 and the LED light board 20 are powered by the external driving power source 43.

In particular, the external drive power source 43 and the emergency drive power source 421 can also be set to the same drive power source, wherein in the normal state, when the drive power source is powered by the required direct current, that is, the drive power source is When the AC-DC module 41 provides the required DC power, the driving power supply drives the LED light board 20 through the external input pin 4231, wherein in the emergency state, the driving power supply is driven by the battery 30 When the required DC power is provided through the emergency input pin 4234, the driving power supply drives the LED light board 20 through the emergency output pin 4232.

It can be understood that, as shown in FIG. 1, when the light board 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 empty pin 4233 is defined as the normal state of the relay 423. It can be seen that in the normal state, since the battery 30 is connected to the empty pin 4233, the battery 30 is connected to the emergency The circuit between the drive control circuits 42 is completely disconnected, so even when the AC-DC module 41 is not energized, that is, when the battery 30 is not in a charging state, the battery 30 will not happen. In the case of over-discharge, the control circuit 40 of the present invention can effectively solve the problem that the battery 30 is damaged due to over-discharge.

On the one hand, during the transportation and storage of the emergency light 10, if the battery 30 forms a loop with the control circuit 40, the battery 30 will always be in a discharged state, so the relay 423 controls the disconnection. Opening the circuit between the battery 30 and the control circuit 40 can effectively prevent the battery 30 from being over-discharged during transportation and storage; on the other hand, in the prior art, there is a concern that A situation in which the traditional emergency lamps cannot enter the emergency state caused by battery over-discharge occurs. Therefore, the traditional emergency lamps need to be maintained and tested regularly, which will consume manpower and material resources accordingly. Through the control circuit 40 of the present invention, because the battery 30 When in the normal state, it is completely disconnected from the control circuit 40, so the battery 30 is not prone to over-discharge. Therefore, the emergency light 10 of the present invention does not require frequent maintenance and testing, that is, In other words, through the arrangement of the control circuit 40 of the present invention, the maintenance period of the emergency light 10 can be extended.

It can be understood that, in the normal state of the relay 423, the AC-DC module 41 converts alternating current into required direct current and 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 charged state.

It can also be understood that when the relay 423 is in the normal state, the light board pin 4235 of the relay 423 is connected to the external input pin 4231 and the battery pin 4236 of the relay 423 Connected to the empty pin 4233, that is, the circuit between the external drive power supply 43 and the LED light board 20 is turned on, and the LED light board 20 can be powered by the external drive power supply 43 to illuminate. When the emergency drive 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 the external drive power source 43 and the LED light board 20 are The circuit in between can be maintained normal, in other words, the damage of the emergency drive control circuit 42 does not affect the lighting circuit of the emergency light 10.

Continuing to refer 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, the battery pin 4236 and When the emergency input pin 4234 is connected, the circuit between the battery 30 and the emergency drive power supply 421 is turned on, so that the battery 30 can be powered by the emergency drive power supply 421 to drive the LED lights The board 20 is illuminated.

It is worth mentioning that in practical applications, due to the fact that there are fewer mains power outages, the relay 423 of the traditional emergency luminaire stays in the normal state for a long time, so the power consumption of the relay 423 of the traditional emergency luminaire will be reduced. This causes a lot of waste of electrical energy resources, and when the relay 423 of the present invention is in the normal state, the relay 423 is in the power-off state, that is, the relay 423 does not generate power consumption in the normal state. , The overall power consumption of the emergency light 10 is reduced, and the reduced power consumption range is 0.35W-0.5W, so the present invention provides an energy-saving and environmentally friendly emergency light 10.

As shown in Figure 2, when the light board 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, it is defined as the The emergency state at the relay 423 can be understood as: 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 instantaneous electrical energy, and The emergency state of the relay 423 is maintained by the power provided by the battery 30, that is to say, the battery 30 is continuously discharged when the relay 423 is in the emergency state, and the relay 423 and the LED The light board 20 provides electrical energy output. 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 de-energized and automatically returns to the normal state, that is, the When the external input pin 4231 of the relay 423 is connected to the light board pin 4235 and the battery pin 4236 is connected to the empty pin 4233, the battery 30 is completely connected to the emergency drive control The circuit 42 is disconnected to prevent the battery 30 from over-discharging. It can also be understood that when the battery 30 is discharged until the battery 30 is insufficient 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 is worth mentioning that when the battery 30 is discharged to a certain extent, the relay 423 will automatically switch back to the normal state, so that the battery 30 can be disconnected from the emergency drive control circuit 42 in time. When the AC-DC module 41 is not connected to mains power, that is, when the energy storage capacitor 422 is out of power, the relay 423 will not switch again. To the emergency state, that is, the battery 30 will not produce an unstable state when discharging in the emergency state, thereby improving the discharge protection accuracy of the battery 30.

Preferably, in this preferred embodiment of the present invention, the control circuit 40 is implemented as the circuit shown in FIG. 3, and the energy storage capacitor 422 is implemented as the capacitor in the circuit shown in FIG. C9, wherein the AC-DC module 41 is electrically connected to the capacitor C9, and the capacitor C9 stores a small amount of electrical energy. When the AC-DC module 41 is disconnected from the mains, the capacitor C9 discharges to discharge the The relay 423 switches to the emergency state. Since there is no power supply of the AC-DC module 41 during the power failure, the power of the capacitor C9 is quickly discharged, so the emergency state of the relay 423 is The battery 30 is powered and maintained, so that when the battery 30 is insufficient to maintain the emergency state of the relay 423, the battery 30 will be completely disconnected from the control circuit 40, because at this time the capacitor C9 The electric energy of has been completely discharged, the relay 423 cannot be switched to the emergency state by the second power supply of the capacitor C9, so the battery 30 can be maintained in a completely disconnected state from the control circuit 40, so In practical applications, since the battery 30 and the control circuit 40 are in a completely disconnected state, the lighting circuit will not be repeatedly turned on. On the one hand, the emergency light 10 will not enter a flickering abnormal state. On the other hand, the battery 30 is not excessively discharged due to the repeated conduction of the lighting circuit.

In addition, it is also worth mentioning that in some embodiments of the present invention, the control circuit 40 can also control and cut off the circuit between the relay 423 and the battery 30 via a central processing module, thereby avoiding the The battery 30 is over-discharged, 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, and when the detection control circuit 44 detects that the input voltage of the AC-DC module 41 is lower than a set value When the voltage, the detection control circuit 44 cuts off the electrical connection between the AC-DC module 41 and the mains. Preferably, when the detection control circuit 44 detects that the input voltage of the AC-DC module 41 is lower than the setting When the constant voltage is 85%, the detection control circuit 44 cuts off the electrical connection between the AC-DC module 41 and the mains, 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 power to the emergency drive 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 circuits shown in FIG. 4. In this 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. The AC-DC module 41 outputs different required direct currents to the battery 30 and the emergency drive control circuit 42 through the battery output port 411 and the emergency output port 412, respectively.

In addition, it is also worth mentioning 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, The battery protection circuit 45 is used to prevent the battery 30 from being overcharged and discharged, and the charge display module 46 is used to indicate the charge and discharge state of the battery 30.

Preferably, the battery protection circuit 45 and the charging display module 46 are implemented as circuits as shown in FIG. 5.

As shown in Fig. 6, in another aspect, the present invention also provides a method for controlling emergency light 10, which includes the following steps:

(a) Output the required DC power to a battery 30 and an emergency drive control circuit 42 respectively;

(b) The battery 30 and an energy storage capacitor 422 of the emergency drive control circuit 42 store electrical energy respectively;

(c) Stop outputting the required DC power to the battery 30 and the emergency drive control circuit 42;

(d) The energy storage capacitor 422 outputs electrical energy to a relay 423 of the emergency drive control circuit 42, thereby switching the relay 423 to an emergency state so that the battery 30, the emergency control drive circuit 42 and a The circuit between the LED light boards 20 is turned on; and

(e) The emergency drive control circuit 42 is powered by the battery 30 to drive the LED light board 20 to illuminate.

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 mains, the AC-DC module 41 Convert the mains power to the required direct current.

In addition, it is also worth mentioning that the AC-DC module 41 includes a battery output port 411 and an emergency output port 412. The AC-DC module 41 uses the battery output port 411 and the emergency output The ports 412 output different required DC power to the battery 30 and the emergency drive control circuit 42 respectively.

It is worth noting that, in the emergency state of the relay 423, a battery pin 4236 of the relay 423 and an emergency input pin 4234 are connected to form the battery 30 electrically connected to the emergency drive control circuit 42, an emergency output pin 4232 of the relay 423 is connected to a light board pin 4235 to form a state where the emergency drive control circuit 42 is electrically connected to the LED light board 20.

Particularly, 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 de-energized to make the battery pin 4236 It is disconnected from the emergency input pin 4234, so that the battery 30 is disconnected from the emergency drive control circuit 42.

It can also be understood that when the battery 30 is discharged until the battery 30 is insufficient to maintain the emergency state of the relay 423, the relay 423 automatically switches to the normal state, so that the battery 30 The circuit with the emergency drive control circuit 42 is disconnected.

Therefore, further, wherein the step (d) further includes the following steps:

(d1) A detection control circuit 44 detects the 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 mains .

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 connection between the AC-DC module 41 and the mains Electrical connection, so that the AC-DC module 41 stops outputting the required DC power to the emergency drive control circuit 42 and the battery 30.

As shown in FIGS. 7-9, the present invention also provides a storage method of emergency light 10 in another aspect, including:

(S1) Test whether the emergency light 10 is qualified;

(S2) When the emergency light 10 is qualified, disconnect the connection between a battery 30 of the emergency light 10 and an emergency drive control circuit 42; and

(S3) The connection between the mains and the emergency light 10 is disconnected.

In practical applications, the emergency light 10 needs to undergo a product qualification test after production. As shown in FIG. 7, the test procedure of the emergency light 10 is as follows: first, connect the AC-DC module 41 of the emergency light 10 to a mains power supply and observe whether the emergency light 10 is on. If the emergency light 10 does not light up, then the emergency light 10 is unqualified. If the emergency light 10 lights up, then go to the next test, disconnect the AC-DC module 41 and the mains, if the emergency light If the lamp 10 is not on, the product is unqualified, and if the emergency lamp 10 is on, the product is qualified. After the AC-DC module 41 is powered off, that is, after the product test is completed, the circuit between the battery 30 and the emergency drive control circuit 42 is in a conductive state. During transportation, the battery 30 and the emergency drive control circuit 42 need to be disconnected. The circuit between the emergency drive control circuits, but because the battery 30 will also consume a certain amount of electrical energy during testing, it is necessary to reconnect the AC-DC module 41 to the mains to charge the battery 30 When the battery 30 is fully charged, the AC-DC module 41 and the mains are disconnected after the battery 30 is disconnected, and finally the battery 30 is reconnected to ensure that the battery 30 is fully charged The power is delivered out of the factory, thereby preventing the battery 30 from being over-discharged during transportation and storage.

Therefore, the step (S1) further includes a test method of the emergency light 10, and the step (S1) further includes the following steps:

(S11) The AC-DC module 41 and an external drive power source 43 are simultaneously connected to a mains;

(S12) An LED light board 20 of the emergency light 10 lights up;

(S13) Simultaneously disconnect the electrical connection between the AC-DC module 41 and the external drive power source 43 and the mains; and

(S14) The LED light board 20 lights up, and the emergency light 10 passes the test.

Those skilled in the art should understand that the embodiments of the present invention shown in the above description and the drawings are merely examples and do not limit the present invention. The purpose of the present invention has been completely and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the principles, the embodiments of the present invention may have any deformation or modification.

Claims

A control circuit, characterized in that it includes:

An external drive power supply; and

An emergency drive control circuit, wherein the emergency drive control circuit includes an emergency drive power supply, an energy storage capacitor, and a relay electrically connected to the energy storage capacitor, wherein the relay includes an external input pin and an emergency output Pins, an empty pin, an emergency input pin, a light board pin, and a battery pin and have a normal state and an emergency state, wherein the external input pin is electrically connected to the external driving power supply, wherein all The emergency output pin and the emergency input pin are respectively electrically connected to the emergency driving power supply, and the emergency input pin is electrically connected to the relay, wherein the light board pin is suitable for connecting to an LED light Board connection, wherein the battery pin is adapted to be connected to a battery, wherein in the normal state, the light board pin is electrically connected to the external input pin so that the LED light board can be connected to the external The driving power supply provides power for driving, 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 to the emergency The input pin is connected, and the light board pin is connected to the emergency output pin, so that the circuit between the battery and the emergency drive power source is turned on to allow the battery to be powered by the emergency drive power source Drive the LED light board and allow the battery to supply power 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 all In the normal state, the energy storage capacitor is powered to store electrical energy, and when the emergency drive control circuit is stopped by the required direct current, the energy storage capacitor outputs the stored electrical energy to the relay to drive the relay Switch to the emergency state, and maintain the emergency state of the relay by the battery through the emergency input pin in the emergency state.
The control circuit according to claim 1, wherein the external drive power supply and the emergency drive power supply are integrated, wherein the required DC power is provided by the external drive power supply, and in the normal state, the battery And the LED light board is powered by the external driving power supply.
The control circuit according to claim 1, wherein the external driving power supply and the emergency driving power supply are set as the same driving power supply, wherein in the normal state, when the driving power supply is powered by the required direct current power, the driving The power supply drives the LED light board through the external input pin, wherein in the emergency state, when the driving power is supplied by the battery through the emergency input pin to provide the required DC power, the driving power supply is The emergency output pin supplies power to drive the LED light board.
The control circuit according to claim 1 or 3, further comprising an AC-DC module, wherein the AC-DC module is electrically connected to the emergency drive control circuit and the battery to provide the emergency drive control circuit and The battery provides the required direct current, wherein when the AC-DC module is connected to a mains power, the AC-DC module converts the mains into the required direct current.
4. The control circuit according to claim 4, wherein the AC-DC module includes a DC output port, wherein the DC output port respectively outputs different required DC power to the emergency drive control circuit and the battery.
The control circuit according to claim 5, wherein the DC output port includes an emergency output port electrically connected to the emergency drive control circuit and a battery output port electrically connected to the battery, so that the DC output The ports respectively output different required direct currents to the emergency drive control circuit and the battery through the emergency output port and the battery output port.
The control circuit according to claim 6, further comprising 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 a set voltage, The detection control circuit cuts off the connection between the AC-DC module and the mains.
The control circuit according to claim 7, further comprising 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 to prevent The battery is overcharged and discharged, wherein the charge display module is used to indicate the charge and discharge state of the battery.
An emergency light, characterized in that it includes:

One LED light board;

A battery; and

A control circuit, wherein the control circuit is electrically connected to the LED light board and the battery and includes:

An external drive power supply; and

An emergency drive control circuit, wherein the emergency drive control circuit includes an emergency drive power supply, an energy storage capacitor, and a relay electrically connected to the energy storage capacitor, wherein the relay includes an external input pin and an emergency output Pins, an empty pin, an emergency input pin, a light board pin, and a battery pin and have a normal state and an emergency state, wherein the external input pin is electrically connected to the external driving power supply, wherein all The emergency output pin and the emergency input pin are respectively electrically connected to the emergency drive power supply, and the emergency input pin is electrically connected to the relay, wherein the light board pin is electrically connected to the LED The light board, wherein the battery pin is electrically connected to the battery, and in the normal state, the light board pin is electrically connected to the external input pin so that the LED light board can be The driving power supply provides power for driving, 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 to the emergency The input pin is connected, and the light board pin is connected to the emergency output pin, so that the circuit between the battery and the emergency drive power source is turned on to allow the battery to be powered by the emergency drive power source Drive the LED light board and allow the battery to supply power 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 all In the normal state, the energy storage capacitor is powered to store electrical energy, and when the emergency drive control circuit is stopped by the required direct current, the energy storage capacitor outputs the stored electrical energy to the relay to drive the relay Switch to the emergency state, and maintain the emergency state of the relay by the battery through the emergency input pin in the emergency state.
The emergency light according to claim 9, wherein the external driving power supply and the emergency driving power supply are integrated, wherein the required direct current is provided by the external driving power supply, and in the normal state, the battery And the LED light board is powered by the external driving power supply.
The control circuit according to claim 9, wherein the external driving power supply and the emergency driving power supply are set as the same driving power supply, wherein in the normal state, when the driving power supply is powered by the required direct current power, the driving The power supply drives the LED light board through the external input pin, wherein in the emergency state, when the driving power is supplied by the battery through the emergency input pin to provide the required DC power, the driving power supply is The emergency output pin supplies power to drive the LED light board.
The emergency light according to 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 power to the The emergency drive control circuit and the battery provide the required direct current power, wherein when the AC-DC module is connected to a mains power, the AC-DC module converts the mains power into the required direct current.
The emergency light according to claim 12, wherein the AC-DC module includes a DC output port, wherein the DC output port respectively outputs different required DC power to the emergency drive control circuit and the battery.
The emergency light according to claim 13, wherein the DC output port includes an emergency output port electrically connected to the emergency drive control circuit and a battery output port electrically connected to the battery, so that the DC output The ports respectively output different required direct currents to the emergency drive control circuit and the battery through the emergency output port and the battery output port.
The emergency light according to claim 14, wherein the control circuit further comprises a detection control circuit electrically connected to the AC-DC module, when the detection control circuit detects that the input voltage of the AC-DC module is lower than When setting the voltage, the detection control circuit cuts off the connection between the AC-DC module and the mains.
The emergency light according to claim 15, wherein the control circuit further comprises 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 The protection circuit is used to prevent the battery from overcharging and discharging, and the charging display module is used to indicate the charging and discharging state of the battery.
An emergency light control method, characterized in that it includes the following steps:

(a) Output the required DC power to a battery and an emergency drive control circuit respectively;

(b) The battery and an energy storage capacitor of the emergency drive control circuit respectively store electrical energy;

(c) Stop outputting the required direct current to the battery and the emergency drive control circuit;

(d) The energy storage capacitor outputs electric energy to a relay of the emergency drive control circuit, thereby switching the relay to an emergency state so that the battery and the emergency control drive circuit and an LED light board The circuit is turned on; and

(e) The emergency drive control circuit is powered by the battery to drive the LED light panel to illuminate.
The method according to claim 17, 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 mains, the AC-DC The module converts the mains power into the required direct current.
18. The method according to claim 18, wherein in the step (a), the AC-DC module outputs different required direct currents to the battery and the battery through a battery output port and an emergency output port, respectively Emergency drive control circuit.
The method according to any one of claims 18-19, wherein said step (d) further comprises 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 the set voltage, the detection control circuit cuts off the electrical connection between the AC-DC module and the mains.
The method according to claim 17, wherein in the emergency state of the relay, a battery pin of the relay is connected to an emergency input pin to form an electrical connection between the battery and the emergency drive control circuit State, an emergency output pin of the relay is connected to a light board pin to form a state where the emergency drive control circuit is electrically connected to the LED light board.
The method according to claim 21, wherein in the step (e), when the battery is discharged until the voltage of the battery reaches the protection voltage of the battery, the relay is de-energized to make the battery lead The pin is disconnected from the emergency input pin, so that the battery is disconnected from the emergency drive control circuit.
A storage method for emergency lights, which is characterized in that it includes:

(S1) Test whether the emergency light is qualified;

(S2) When the emergency light is qualified, disconnect the connection between a battery of the emergency light and an emergency drive control circuit; and

(S3) Disconnect the connection between the mains and the emergency light.
The method according to claim 23, wherein said step (S1) further comprises the following steps:

(S11) Connect an AC-DC module and an external drive power to a mains at the same time;

(S12) An LED light board of the emergency light is on;

(S13) Simultaneously disconnect the electrical connection between the AC-DC module and the external drive power supply and the mains; and

(S14) The LED light board lights up, and the emergency light passes the test.