CN113015292A - Illumination driving circuit with power-off delay control function and lamp - Google Patents

Illumination driving circuit with power-off delay control function and lamp Download PDF

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Publication number
CN113015292A
CN113015292A CN201911308313.2A CN201911308313A CN113015292A CN 113015292 A CN113015292 A CN 113015292A CN 201911308313 A CN201911308313 A CN 201911308313A CN 113015292 A CN113015292 A CN 113015292A
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China
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power
component
signal
resistor
power supply
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CN201911308313.2A
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Chinese (zh)
Inventor
陈富杰
曹亮亮
黄雨欣
陈毅滨
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Zhangzhou Lidaxin Optoelectronic Technology Co ltd
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Zhangzhou Lidaxin Optoelectronic Technology Co ltd
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Priority to CN201911308313.2A priority Critical patent/CN113015292A/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

A lighting driving circuit and a lamp with power-off delay control function are provided, the lighting driving circuit comprises: the device comprises a power supply detection assembly, a power control assembly, a power supply management assembly, a switch assembly, a light source control assembly and a standby driving assembly; when the power supply detection assembly is connected to the power supply device, the power control assembly converts a first power supply signal output by the power supply device, charges the power supply management assembly and drives the first light emitting module to emit light; the switch component generates a first dial signal, a second dial signal or a third dial signal; the light source control assembly respectively converts and outputs a power failure signal, a second dial signal or a third dial signal output by the power supply detection assembly; the standby driving component controls the second light-emitting module to present different power-off delayed light-emitting states according to the signal output by the light source control component; the luminous state of the second luminous module after the power supply equipment is powered off is adjusted through each dial-up signal output by the switch component, and the luminous device is simple, convenient and practical.

Description

Illumination driving circuit with power-off delay control function and lamp
Technical Field
The application belongs to the technical field of electronic circuits, and particularly relates to an illumination driving circuit with power-off delay control function and a lamp.
Background
With the rapid development of electronic technology, daily electronic equipment gradually evolves from a single circuit function to a complex and comprehensive circuit function, wherein the electronic equipment has various control modes to meet various use requirements of users, so that the application range and the practical value of the electronic equipment are higher and higher, and good use experience is brought to the users; taking lamps as an example, the initial lamps are only used as light sources to provide illumination for people, and in the modern industrial society, the lamps are gradually applied to places such as landscape decoration, emergency lighting and the like, so the lamps are gradually extended and developed towards different industrial directions.
If the lamp in the conventional technology needs to expand other circuit functions, for example, the lamp needs to expand for emergency lighting, then the conventional lamp needs to add an additional emergency circuit, a light source chip and the like, the circuit is relatively complex, the operation steps are performed, and the control cost of the emergency lighting is relatively high; in addition, when the lamp in the traditional technology is powered off for illumination, the light source emitted by the lamp cannot be adaptively adjusted according to the actual requirements of the user, so that great inconvenience is brought to the user, and the use experience of the user is reduced.
Disclosure of Invention
In view of this, the embodiment of the present application provides an illumination driving circuit and a lamp having a power-off delay control function, and aims to solve the problems that in a conventional technical scheme, the control cost of illumination of the lamp after power-off is high, the circuit structure is complex, and the control flexibility of a light source emitted after power-off delay of the lamp is low, which brings great inconvenience to users.
A first aspect of an embodiment of the present application provides an illumination driving circuit having a power-off delay control function, including:
the power supply detection component is configured to detect whether power supply equipment is connected or not, and if so, receives a first power supply signal output by the power supply equipment;
the power control component is connected with the power detection component and the first light-emitting module, is configured to convert the first power signal to obtain a second power signal and a third power signal, and outputs the second power signal to the first light-emitting module;
a power management component coupled to the power control component and configured to charge in accordance with the third power signal;
a switch assembly configured to generate a first dial signal, a second dial signal, or a third dial signal according to a key signal of a user;
the light source control component is connected with the power supply detection component, the switch component and the power supply management component, and is configured to generate a first pulse driving signal with a first preset duty ratio according to a power failure signal output by the power supply detection component when the power supply detection component is detected not to be connected with power supply equipment, or generate a second pulse driving signal with a second preset duty ratio according to the second dial signal, or generate a third pulse driving signal with a third preset duty ratio according to the third dial signal; and
the second light-emitting module is connected with the light source control assembly, the power management assembly and the second light-emitting module, and is configured to adjust the discharge electric energy of the power management assembly according to the first pulse driving signal to generate a first light source driving signal and control the second light-emitting module to emit light sources within a first preset time period; or adjusting the discharge electric energy of the power management assembly according to the second pulse driving signal to generate a second light source driving signal and control the second light emitting module to emit a light source; or adjusting the discharge electric energy of the power management assembly according to the third pulse driving signal to generate a third light source driving signal, and controlling the second light-emitting module to emit a standby driving assembly of the light source.
In one embodiment thereof, the power control assembly comprises:
the power supply comprises a power supply conversion chip, a first switch, a rectifier bridge, a first inductor, a first transformer, a first diode, a second diode, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first capacitor, a second capacitor, a third capacitor and a fourth capacitor;
a first end of the first switch is a positive input end of the power control component, a second end of the first switch and a first end of the first capacitor are connected to a positive power input end of the rectifier bridge in a common mode, and a second end of the first capacitor and a negative power input end of the rectifier bridge are connected in a common mode to form a negative input end of the power control component;
the positive input end of the power control assembly and the negative input end of the power control assembly are both connected with the power supply detection assembly;
a positive output end of the rectifier bridge and an anode of the first diode are connected to the power detection assembly in a common mode, a negative output end of the rectifier bridge, a first end of the second capacitor, a first end of the third capacitor and a first end of the second resistor are connected to an electric energy input pin of the power conversion chip in a common mode, and a second end of the second resistor is connected to an enabling control pin of the power conversion chip in a common mode;
a cathode of the first diode, a second end of the second capacitor and a first end of the first resistor are connected to a first end of the first inductor in a common manner, and a second end of the first inductor, a second end of the first resistor, a second end of the third capacitor, an electric energy feedback pin of the power conversion chip, a cathode of the second diode, a first end of the fourth capacitor and a first end of the fifth resistor are connected to form an electric energy forward output end of the power control assembly in a common manner;
the power output pin of the power conversion chip is connected with one end of the primary winding of the first transformer, the other end of the primary winding of the first transformer, the second end of the fourth capacitor and the second end of the fifth resistor are connected together to form a negative power output end of the power control assembly, the first end of the third resistor and the first end of the fourth resistor are connected together with the ground pin of the power conversion chip, and the second end of the third resistor and the second end of the fourth resistor are connected together with the ground;
the electric energy positive output end of the power control assembly and the electric energy negative output end of the power control assembly are connected with the first light-emitting module;
the secondary winding of the first transformer is connected with the power management component.
In one embodiment thereof, the light source control assembly comprises:
the LED display device comprises a light source control chip, a sixth resistor, a seventh resistor, a third diode, a fifth capacitor, a first key switch and a second key switch;
a signal output pin of the light source control chip is connected with a first end of the sixth resistor, and a second end of the sixth resistor is connected with the standby driving component;
a ground pin of the light source control chip, an anode of the third diode and a first end of the fifth capacitor are connected to the ground in common, a cathode of the third diode, a second end of the fifth capacitor and a first end of the seventh resistor are connected to a level detection pin of the light source control chip in common, and a second end of the seventh resistor is used for connecting the power supply detection component and the switch component;
a first gear control pin of the light source control chip is connected with a first end of the first key switch, and a second end of the first key switch is grounded;
a second stop control pin of the light source control chip is connected with a first end of the second key switch, and a second end of the second key switch is grounded;
and the electric energy input pin of the light source control chip is connected with the power management component.
In one embodiment, the power management component comprises:
an electric energy storage component connected with the light source control component and the standby driving component and configured to be charged or discharged; and
the power control assembly is connected with the power storage component and is configured to detect the voltage of the power storage component and perform charging protection on the power storage component when receiving the third power supply signal; and the electric energy control component detects the voltage of the electric energy storage component and carries out discharge protection on the electric energy storage component when the third power supply signal is not received.
In one embodiment thereof, the power control means comprises: the power supply management circuit comprises a power supply management chip, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a sixth capacitor and a seventh capacitor;
the electrical energy storage unit includes: a battery;
the first end of the sixth capacitor, the power input pin of the power management chip, the first end of the eighth resistor and the charging control pin of the power management chip are connected to the power control assembly in common, the second end of the eighth resistor, the first end of the ninth resistor and the power output negative pin of the power management chip are connected to the first end of the eleventh resistor in common, and the voltage stabilization control pin of the power management chip is connected to the first end of the tenth resistor;
the negative electrode of the battery, the second end of the eleventh resistor, the first end of the seventh capacitor, the ground pin of the power management chip, the second end of the tenth resistor, the second end of the ninth resistor and the second end of the sixth capacitor are connected to the ground in common;
and a power output positive pin of the power management chip, a second end of the seventh capacitor and a positive electrode of the battery are connected to the light source control assembly and the standby driving assembly in a common way.
In one embodiment, the backup drive assembly comprises:
the power supply driving chip, the eighth capacitor, the ninth capacitor, the twelfth resistor, the fourth diode and the second inductor;
the pulse width control pin of the power driving chip is connected with the light source control component;
a power input pin of the power driving chip, a first end of the eighth capacitor and a first end of the second inductor are connected to the power management component, and a second end of the second inductor and an anode of the fourth diode are connected to a voltage enabling pin of the power driving chip;
the cathode of the fourth diode, the power output anode pin of the power driving chip and the first end of the ninth capacitor are connected in common to form a power supply forward output end of the standby driving component;
a power output negative pin of the power driving chip and a first end of the twelfth resistor are connected together to form a power negative output end of the standby driving component;
the positive output end of the power supply of the standby driving component and the negative output end of the power supply of the standby driving component are used for being connected with the second light-emitting module;
and the second end of the twelfth resistor, the ground pin of the power driving chip and the second end of the ninth capacitor are connected to the ground in common.
In one embodiment thereof, the switch assembly comprises: a dial switch;
the dial switch is specifically used for adjusting to a first gear according to a first key signal and generating a first dial signal; adjusting to a second gear according to a second key signal, and generating a second dial signal; and adjusting to a third gear according to a third key signal, and generating a third dial signal.
In one embodiment, the method further comprises:
the standby control component is connected with the standby driving component and is configured to generate an on signal or an off signal according to a trigger signal;
the standby driving component is further used for transmitting the first light source driving signal or the second light source driving signal or the third light source driving signal to the second light emitting module according to the conducting signal; or stopping working according to the turn-off signal.
In one embodiment, the method further comprises:
the power supply detection component is connected with the power supply management component and the light source control component and is configured to detect the supply current of the discharging electric energy of the power supply management component when the power supply detection component is not connected with the power supply equipment and the discharging electric energy of the power supply management component is output to the standby driving component.
A second aspect of an embodiment of the present application provides a luminaire, including:
the lighting driving circuit as described above;
the first light-emitting module and the second light-emitting module are both connected with the lighting driving circuit; and
and the shell is used for packaging and protecting the lighting driving circuit, the first light-emitting module and the second light-emitting module.
The lighting driving circuit with the power-off delay control function can detect whether the power supply equipment is connected or not through the power supply detection assembly so as to identify whether the power supply equipment is powered off or not; when the power supply equipment is normally connected to the power supply detection assembly, the first power supply signal output by the power supply equipment is converted, then the first light-emitting module is powered, and the power supply management assembly can realize a charging function; if the power-off event of the power supply equipment is detected, different dial signals are output according to the switch assembly to respectively adjust the light-emitting effect of the second light-emitting module, so that the second light-emitting module is flexibly, simply and conveniently controlled in power-off delay, and the light source lighting requirements of users in various aspects are met; therefore, the light-emitting state of the second light-emitting module can still be controlled in real time when the power supply equipment is disconnected through the switch assembly, the power-off delay control is convenient, and great convenience is brought to the use of a user; the lighting driving circuit realizes the self-adaptive adjustment function of the light emitting state of the second light emitting module according to the signal output state of the switch assembly, simplifies the circuit module structure of the lighting driving circuit, reduces the light source control cost of the power supply equipment when the power supply equipment is disconnected, and has higher practical value.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a lighting driving circuit with a power-off delay control function according to an embodiment of the present disclosure;
fig. 2 is a schematic circuit diagram of a power control module according to an embodiment of the present disclosure;
fig. 3 is a schematic circuit diagram of a light source control assembly according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a power management component according to an embodiment of the present application;
fig. 5 is a schematic circuit diagram of a power management component according to an embodiment of the present application;
fig. 6 is a schematic circuit diagram of a standby driving assembly according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of an illumination driving circuit with power-off delay control function according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of a lamp according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Referring to fig. 1, in the lighting driving circuit 10 with power-off delay control function provided in the embodiment of the present application, the lighting driving circuit 10 not only can supply power and emit light in a delay manner when an external power supply is turned off, but also can flexibly adjust the display state of a light source after power-off delay, thereby ensuring flexibility and simplicity of light source adjustment after power-off delay; for convenience of explanation, only the parts related to the present embodiment are shown, and detailed as follows:
the lighting driving circuit 10 includes: a power detection component 101, a power control component 102, a power management component 103, a switch component 104, a light source control component 105, and a backup drive component 106.
The power detection component 101 is configured to detect whether the power device 20 is connected, and when the power device is connected, receive a first power signal output by the power device.
The power detection component 101 has a power detection function, when the power detection component 101 detects that the power device 20 is connected, the power device 20 is electrically connected to the lighting driving circuit 10, and at this time, the power device 20 serves as an external power source to continuously supply power to the lighting driving circuit 10; when the power detection component 101 detects that the power device 20 is not connected, the power device 20 cannot be electrically connected with the lighting driving circuit 10, and at this time, the power device 20 has a power failure phenomenon, and the lighting driving circuit 10 starts a power-off delay power supply function; therefore, in the present embodiment, the power detection component 101 detects the connection state of the power device 20 in real time, so as to ensure the flexibility and stability of power supply of the lighting driving circuit 10, and the lighting driving circuit 10 has higher simplicity and compatibility of light source control.
The power control module 102 is connected to the power detection module 101 and the first light emitting module 30, and configured to convert the first power signal into a second power signal and a third power signal, and output the second power signal to the first light emitting module 30.
The power control component 102 can convert the electric energy output by the power supply device 20 in real time to obtain a second power supply signal and a third power supply signal respectively; for example, the first power signal belongs to an alternating current amount, the power control module 102 rectifies and stabilizes the first power signal to obtain a second power signal and a third power signal, and the second power signal and the third power signal have different voltages, for example, the voltage of the second power signal is 3.3V, and the voltage of the third power signal is 3V, so that the second power signal or the third power signal output by the power control module 102 can respectively realize the power-on function of different electronic components, and the internal power conversion efficiency and the conversion flexibility of the lighting driving circuit 10 are ensured.
When the power control module 102 outputs the second power signal to the first light emitting module 30, the first light emitting module 30 receives the second power signal and powers on according to the rated power, so that the power-on safety and power-on stability of the first light emitting module 30 are ensured, and the first light emitting module 30 can emit a light source with preset light intensity; in contrast, when the power supply device 20 is not connected to the power detection component 101, the power control component 102 cannot output the second power signal and the third power signal, and the first light emitting module 30 is in an off state; therefore, when the power supply device 20 is normally connected to the power detection assembly 101, the power output from the power supply device 20 is efficiently converted to ensure the light-emitting safety and light-emitting efficiency of the first light-emitting module 30; when the power device 20 is normally connected, the first light emitting module 30 can directly use an external power source to supply power, so that the power supply continuity of the first light emitting module 30 is improved, and the actual light source requirement of the user is met.
The power management component 103 is connected to the power control component 102 and configured to perform charging according to the third power signal.
The third power signal includes power of a specific voltage, the power management component 103 has a power storage function, and is charged or discharged through the power management component 103, so that the power management component 103 can input and output power; therefore, in the embodiment, the power management component 103 performs efficient charging according to the third power signal, and the remaining power stored in the power management component 103 will continuously increase, so as to ensure the electric energy storage security of the power management component 103; therefore, when the power supply device 20 is connected to the lighting driving circuit 10, the power control component 102 converts the external power supply to implement the rated charging function of the power supply management component 103; then, under the condition that the power supply device 20 is connected, the power supply management component 103 is charged efficiently for performing an emergency function when the power supply device 20 is abnormally powered down; therefore, in the present embodiment, the power management component 103 is additionally disposed inside the lighting driving circuit 10, so as to store the electric energy output by the power supply device 20 in real time, thereby improving the utilization rate of the electric energy output by the power supply device 20.
The switch assembly 104 is configured to generate a first dial signal, a second dial signal, or a third dial signal according to a key signal of a user.
The switch assembly 104 has a function of switch selection, and the key signal includes function selection information of a user, so that dial signals of the first dial signal, the second dial signal and the third dial signal output by the switch assembly 104 respectively include different circuit control information; the illumination driving circuit 10 can be respectively driven to enter different power-off light source display modes through the first dial signal, the second dial signal or the third dial signal, so that the light source of the illumination driving circuit 10 is flexibly controlled; therefore, in the embodiment, the light emitting state of the lighting driving circuit 10 can be flexibly adjusted through the switch assembly 104 under the condition of losing the external power supply, the operation is simple and convenient, and great convenience is brought to the dimming control process of the user.
The light source control component 105 is connected to the power detection component 101, the switch component 104 and the power management component 103, and configured to generate a first pulse driving signal with a first preset duty ratio according to a power-down signal output by the power detection component 101 when detecting that the power detection component 101 is not connected to the power device 20, generate a second pulse driving signal with a second preset duty ratio according to a second dial signal, or generate a third pulse driving signal with a third preset duty ratio according to a third dial signal.
Wherein discharge through power management subassembly 103, the electric energy that discharges through power management subassembly 103 charges to light source control subassembly 105 to ensure that light source control subassembly 105 realizes stable, safe circuit function, light source control subassembly 105 has higher power supply stability.
In one embodiment, when the switch component 101 outputs a first dial signal according to a key signal, it indicates that the switch component 101 is in a neutral position at this time, the switch component 101 generates a first pulse driving signal with a first preset duty ratio according to the first dial signal and a power-down signal output by the power detection component 101, and when the power detection component 101 is not connected to the power device 20, it indicates that an external power failure event occurs in the lighting driving circuit 10, and the power detection component 101 outputs a power-down signal; the light source control component 105 generates a pulse driving signal with a specific duty cycle to cause the lighting driving circuit 10 to automatically enter a power-off delay control state; when the switch component 104 generates the second dial signal or the third dial signal according to the key signal, it indicates that the lighting driving circuit 10 enters a specific power-off delay control mode respectively; it should be noted that the duty cycle is a ratio of the time occupied by the pulse to the total time in a period of continuous working time of the signal; the duty ratio is one of important parameters of the signal, and different circuit control functions can be realized by adjusting the duty ratio of the signal; therefore, in the present embodiment, the light source control component 105 performs high-efficiency conversion on the power-down signal output by the power detection component 101 and the dial signal output by the switch component 104 to generate the pulse driving signal with a specific duty ratio, so that the accuracy of the lighting driving circuit 10 in adjusting the lighting state after power-off is greatly improved, and the step of adjusting the lighting state after power-off of the lighting driving circuit 10 is simplified.
Illustratively, the first preset duty cycle is 15%, the second preset duty cycle is 33%, and the third preset duty cycle is 100%, so that different circuit functions can be realized for the electronic component through the first pulse driving signal, the second pulse driving signal, and the third pulse driving signal.
The standby driving component 106 is connected to the light source control component 105, the power management component 103 and the second light emitting module 40, and is configured to adjust the discharge power of the power management component 103 by the first pulse driving signal to generate a first light source driving signal, and control the second light emitting module 40 to emit light within a first preset time period; or adjusting the discharge electric energy of the power management component 103 according to the second pulse driving signal to generate a second light source driving signal, and controlling the second light emitting module 40 to emit a light source; or adjust the discharge power of the power management component 103 according to the third pulse driving signal to generate a third light source driving signal, and control the second light emitting module 40 to emit light source.
The power management component 103 discharges, and the standby driving component 106 can access discharge power in real time; when the power supply device 20 is abnormally powered off, the power management component 103 controls the second light-emitting module 40 to continue to emit light after the power off, so as to achieve the effect of delayed power off; specifically, when the power supply detection component 101 outputs a power-down signal and the light source control component 105 outputs a first pulse driving signal to the standby driving component 106, the power conversion state of the standby driving component 106 can be changed through the first pulse driving signal, so that the second light-emitting module 40 emits a light source within a specific time period, and further, after the power supply device 20 is powered off, the second light-emitting module 40 can still illuminate for a time in a delayed manner, so as to achieve the emergency lighting function; for example, when the first preset time period is 2 minutes, the switch assembly 104 is in a neutral condition, after the power supply detection assembly 101 outputs the power down signal, the light source control assembly 105 continuously outputs the first pulse driving signal within 2 minutes according to the power down signal output by the power supply detection assembly 101, the standby driving assembly 106 drives the second light emitting module 40 to emit light within 2 minutes according to the first pulse driving signal, and then the second light emitting module 40 emits a light source with preset light intensity, so that after the power supply device 20 is turned off, the standby driving assembly 106 can still drive the second light emitting module 40 to emit light for 2 minutes in a delayed manner, thereby achieving an automatic delayed light emission effect.
When the switch assembly 104 generates the second dial signal or the third dial signal according to the key signal of the user, the light source controlling assembly 105 enters a specific brightness control mode, when the light source controlling assembly 105 outputs the second pulse driving signal or the third pulse driving signal to the standby driving assembly 106, since the second pulse driving signal and the third pulse driving signal respectively have specific duty ratios, after the standby driving component 106 adjusts the discharging power of the power management component 103, the second light source driving signal or the third light source driving signal can be outputted to the second light emitting module 40, so that the second light emitting module 40 emits light sources with different light intensities, the second light emitting module 40 can realize flexible dimming control performance after the external power supply is disconnected, and the light emitting brightness of the second light emitting module 40 can completely meet the visual appreciation requirements of users; therefore, when the switch component 104 generates the second dial signal or the third dial signal according to the function selection information of the user, at this time, after the power supply device 20 is disconnected, the second light emitting module 40 continues to be powered on by the electric energy formed by the discharge of the power management component 103, so that the second light emitting module 40 emits a light source with specific light intensity, and the second light emitting module 40 is not turned off until the discharge of the power management component 103 is finished; it should be noted that, after the power failure event occurs in the power detection component 101, if the switch component 104 generates the second dial signal or the third dial signal according to the key signal of the user, the lighting driving circuit 10 preferentially enters the brightness adjustment mode according to the key function of the user, and at this time, the standby driving component 106 generates the second light source driving signal or the third light source driving signal, so that the second light emitting module 40 has different light emitting luminances at the power failure delay stage; therefore, the adjusting switch assembly 104 of this embodiment outputs the second dial signal or the third dial signal, so that the second light emitting module 40 can be controlled to emit light for a long time only by the discharging electric energy of the power management assembly 103 when the external power supply is lost, the light source adjusting flexibility of the second light emitting module 40 is improved, and the diversified dimming control requirements of the user are met.
In the structure schematic of the lighting driving circuit 10 shown in fig. 1, the lighting driving circuit 10 has a relatively simplified circuit module structure, on one hand, when the power supply device 20 is normally connected, the power control module 102 converts the electric energy output by the power supply device 20, and then drives the first light emitting modules 30 to normally emit light, and enables the power management module 103 to charge; when the power supply device 20 is turned off, the delayed light emitting function of the second light emitting module 40 is activated, and three different types of dial signals are respectively output through the switch assembly 104 to respectively change the power supply conversion state of the standby driving assembly 106; when the switch component 104 does not output any one of the second dial signal and the third dial signal, and the power supply detection component 101 outputs a power failure signal, the second light-emitting module 40 accesses electric energy and emits a light source with preset brightness in a specific time period, so that the emergency automatic lighting effect is achieved; when the switch component 104 outputs the second dial signal or the third dial signal, the standby driving component 106 outputs the electric energy with specific voltage under the driving of the pulse adjusting signal with specific duty ratio, so as to drive the second light emitting module 40 to continuously emit the light source with preset brightness, thereby bringing good visual experience to the user; therefore, in the embodiment, the switch assembly 104 can control the delayed lighting state of the second light-emitting module 40 when the external power supply is lost, so that the operation is convenient and fast, and the multi-directional visual experience of the user is met; the emergency lighting of the second light-emitting module 40 is maintained by means of the electric quantity stored in the power management component 103, so that the internal circuit module of the lighting driving circuit 10 is further simplified, and the control cost of the power failure of the lighting driving circuit 10 under the condition that the power supply device 20 is disconnected is reduced; the lighting driving circuit 10 can adjust the light-emitting state of the power supply device 20 after being disconnected according to the use environment and the use time, and has strong compatibility and flexibility; therefore, the problems that the flexibility of control of the time-delay light source of the lamp after power failure is low, the control steps and the circuit structure are complex, the multifunctional power failure time-delay control requirement of a user cannot be met, and the use experience of the user is poor in the conventional technology are effectively solved.
As an alternative implementation, fig. 2 shows a schematic circuit structure of the power control component 102 provided in this embodiment, please refer to fig. 2, where the power control component 102 includes: the power conversion circuit comprises a power conversion chip U1, a first switch S1, a rectifier bridge, a first inductor L1, a first transformer T1, a first diode D1, a second diode D2, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first capacitor C1, a second capacitor C2, a third capacitor C3 and a fourth capacitor C4.
A first terminal of the first switch S1 is a positive input terminal of the power control module 102, a second terminal of the first switch S1 and a first terminal of the first capacitor C1 are commonly connected to a positive power input terminal of the rectifier bridge, and a second terminal of the first capacitor C1 and a negative power input terminal of the rectifier bridge are commonly connected to form a negative input terminal of the power control module 102.
The positive input end of the power control component 102 and the negative input end of the power control component 102 are both connected to the power detection component 101.
When the power supply device 20 is connected to the power supply detection assembly 101, the power control assembly 102 receives a first power supply signal output by the power supply detection assembly 101 through a positive input end and a negative input end, and the power supply detection assembly 101 and the power control assembly 102 have high electric energy transmission efficiency; wherein the first switch S1 can control the power transmission process between the power detection module 101 and the power control module 102, and the power control module 102 can access the first power signal only when the first switch S1 is closed.
The positive output end of the rectifier bridge and the anode of the first diode D1 are commonly connected to the power detection component 101, and when the power detection component 101 detects that the power device 20 is connected, the power detection component 101 notifies the power control component 102 of the connection state, so that the power control component 102 can realize an efficient electric energy conversion function; a negative output end of the rectifier bridge, a first end of a second capacitor C2, a first end of a third capacitor C3 and a first end of a second resistor R2 are connected to an electric energy input pin of the power conversion chip U7 in a sharing mode, and a second end of the second resistor R2 is connected to an enabling control pin of the power conversion chip U7; for example, referring to fig. 2, the power input pin of the power conversion chip U7 is the 4 th pin, the enable control pin of the power conversion chip U7 is the 3 rd pin, and the power conversion chip U7 receives dc power through the power input pin and the enable control pin to complete the power conversion operation.
A cathode of the first diode D2, a second end of the second capacitor C2, and a first end of the first resistor R1 are connected to a first end of the first inductor L1, a second end of the first inductor L1, a second end of the first resistor R1, a second end of the third capacitor C3, an electric energy feedback pin of the power conversion chip U1, a cathode of the second diode D2, a first end of the fourth capacitor C4, and a first end of the fifth resistor R5 are connected to form an electric energy forward output end of the power control module 102; referring to fig. 2, the power feedback pin of the power conversion chip U1 is the 1 st pin.
The power output pin of the power conversion chip U1 is connected to one end of the primary winding of the first transformer T1, and the other end of the primary winding of the first transformer T1, the second end of the fourth capacitor C4 and the second end of the fifth resistor R5 are connected together to form the negative power output terminal of the power control module 102; as shown in fig. 2, the power output pins of the power conversion chip U1 include a 7 th pin and an 8 th pin.
A first end of the third resistor R3 and a first end of the fourth resistor R4 are commonly connected to a ground pin of the power conversion chip U1, and a second end of the third resistor R3 and a second end of the fourth resistor R4 are commonly connected to the ground GND; as shown in fig. 2, the ground pin of the power conversion chip U1 is the 5 th pin.
The positive power output end of the power control assembly 102 and the negative power output end of the power control assembly 102 are connected with the first light emitting module 30.
The secondary winding of the first transformer T1 is connected to the power management component 103.
After the power conversion chip U1 converts the first power signal, on one hand, a second power signal is output to the first light emitting module 30 through the electric energy positive output terminal of the power control module 102 and the electric energy negative output terminal of the power control module 102, so that the first light emitting module 30 is powered on to emit light; on the other hand, the electric energy is transmitted in an isolated manner through the coupling isolation between the primary winding and the secondary winding of the first transformer T1, and then the power management component 103 is charged in real time by using the secondary winding, so that the electric energy transmission efficiency between the power control component 102 and the power management component 103 is improved, and the power control component 102 has high electric energy transmission compatibility.
Illustratively, the power conversion chip U1 has the following model: the LM7805 or the LM2940 can flexibly convert the first power supply signal through the power supply conversion chip U1, and therefore, the internal circuit structure of the power control component 102 is simplified.
As an alternative implementation, fig. 3 shows a schematic circuit structure of the light source control assembly 105 provided in this embodiment, please refer to fig. 3, in which the light source control assembly 105 includes: the light source control circuit comprises a light source control chip U2, a sixth resistor R6, a seventh resistor R7, a third diode D3, a fifth capacitor C5, a first key switch SW1 and a second key switch SW 2.
A signal output pin P1.0 of the light source control chip U2 is connected with a first end of a sixth resistor R6, and a second end of the sixth resistor R6 is connected with the standby driving component 106; the first pulse driving signal, the second pulse driving signal or the third pulse driving signal can be output through the signal output pin P1.0 of the light source control chip U2.
The ground pin of the light source control chip U2, the anode of the third diode D3 and the first end of the fifth capacitor C5 are commonly connected to the ground GND, the cathode of the third diode D3, the second end of the fifth capacitor C5 and the first end of the seventh resistor R7 are commonly connected to the level detection pin P1.5 of the light source control chip U2, and the second end of the seventh resistor R7 is connected to the power detection module 101 and the switch module 104; the level detection pin P1.5 of the light source control chip U2 can identify whether the power supply device 20 is connected according to the level state of the access signal, and the identification precision of the access state of the power supply device 20 is high; for example, when the power detection component 101 has a power down event, the level detection pin P1.5 of the light source control chip U2 receives a power down signal.
The first gear control pin P1-2 of the light source control chip U2 is connected to the first end of the first key switch SW1, and the second end of the first key switch SW1 is grounded GND.
A second gear control pin P1-3 of the light source control chip U2 is connected with a first end of a second key switch SW2, and a second end of the second key switch SW2 is grounded GND; the on or off states of the first key switch SW1 and the second key switch SW2 are controlled respectively, so that various dial signals output by the switch assembly 104 can be matched, and the light emitting state of the second light emitting module 20 can be adjusted in real time.
The power input pin VDD of the light source control chip U2 is connected with the power management component 103; and the light source control chip U2 is connected to the discharging power of the power management component 103 through the power input pin VDD to realize the rated power-on function.
Exemplarily, the light source control chip U2 is an STM32 series single chip microcomputer chip, and then the light source control chip U2 can perform efficient conversion on a power down signal and a dial signal, thereby ensuring the light emitting control efficiency of the second light emitting module 20.
As an optional implementation manner, fig. 4 shows a schematic structure of the power management component 103 provided in this embodiment, please refer to fig. 4, where the power management component 103 includes: an electric power storage part 1031 and an electric power control part 1032; the electric energy storage component 1031 is connected to the light source control component 105 and the standby driving component 106, and configured to perform charging or discharging; wherein, the power is pre-stored through the power storage component 1031 to wait for the light source control component 105 and the standby driving component 106 to be respectively charged when the power supply device 20 is turned off, so as to achieve that the second light emitting module 40 can still maintain higher charging stability under the condition of losing the external power.
The power control part 1032 is connected to the power control component 102 and the power storage part 1031, and is configured to detect the voltage of the power storage part 1031 and perform charge protection on the power storage part 1031 when receiving the third power supply signal; when the third power signal is not received, the voltage of the power storage part 1031 is detected and the power storage part 1031 is discharge protected.
The electric energy control component 1032 can perform charging and discharging control on the electric energy storage component 1031, and when the power supply device 20 is connected to the power supply detection component 101, and the electric energy control component 1032 detects that the electric energy storage component 1031 meets the safe charging condition, the electric energy storage component 1031 is efficiently charged through a third power supply signal; on the contrary, when the power supply device 20 is turned off, the power control part 1032 detects whether the power storage part 1031 meets the safe discharge condition, and when it is determined that the power storage part 1031 meets the safe discharge condition, the power control component 1032 controls the power storage part 1031 to perform the safe discharge so as to ensure the light emitting continuity and stability of the second light emitting module 40.
For example, the power control component 1032 performs trickle charge protection, overcharge protection, overdischarge protection and overheat protection on the power storage component 1031, and then the discharged power can be stably output to the light source control component 105 and the standby driving component 106 through the power storage component 1031, so as to ensure the power-on safety and the operation stability of the two circuit components: for example, when the voltage of the electrical energy storage component 1031 is lower than a preset discharging voltage, the discharging is stopped to protect the electrical energy storage component 1031; when the voltage of the electric energy storage part 1031 is higher than the preset charging voltage, charging according to the third power signal; when the voltage of the electrical energy storage component 1031 is higher than the preset trickle voltage, trickle charging is performed, and charging is stopped until the voltage of the electrical energy storage component 1031 reaches the maximum charging voltage, so that charging and discharging protection of the electrical energy storage component 1031 is realized, and the lighting driving circuit 10 has high electrical energy safety inside to perform more stable electrical energy supply for the second light emitting module 40.
As an alternative implementation, fig. 5 shows a schematic circuit structure of the power management component 103 provided in this embodiment, please refer to fig. 5, and the power control component 1032 includes: the power management chip comprises a power management chip U3, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a sixth capacitor C6 and a seventh capacitor C7.
The electric energy storage part 1031 includes: and a battery BAT.
A first end of the sixth capacitor C6, a power input pin of the power management chip U3, a first end of the eighth resistor R8, and a charging control pin of the power management chip U3 are commonly connected to the power control assembly 102, as shown in fig. 5, the power input pin of the power management chip U3 is a 4 th pin, the charging control pin of the power management chip U3 is an 8 th pin, and when the power control assembly 102 outputs a third power signal to the power input pin and the charging control pin of the power management chip U3, the power management chip U3 performs a power-on operation according to the third power signal; the second terminal of the eighth resistor R8, the first terminal of the ninth resistor R9, and the negative power pin of the power management chip U3 are commonly connected to the first terminal of the eleventh resistor 11, and as shown in fig. 5, the negative power pin of the power management chip U3 is the 1 st pin.
The voltage stabilization control pin of the power management chip U3 is connected to the first end of the tenth resistor R10, as shown in fig. 5, the voltage stabilization control pin of the power management chip U3 is the 2 nd pin, the internal electric energy of the power management chip U3 can be ensured to be in a stable state through the voltage stabilization control pin, and the charging control and discharging control stability of the power management chip U3 is improved.
The negative electrode of the battery BAT, the second end of the eleventh resistor R11, the first end of the seventh capacitor C7, the ground pin of the power management chip U3, the second end of the tenth resistor R10, the second end of the ninth resistor R9, and the second end of the sixth capacitor C6 are all connected to the ground GND, as shown in fig. 5, the ground pin of the power management chip U3 is the 3 rd pin.
The power output positive pin of the power management chip U3, the second end of the seventh capacitor C7, and the positive terminal of the battery BAT are connected to the light source control module 105 and the standby driving module 106; as shown in fig. 5, the power output positive pin of the power management chip U3 is the 5 th pin.
Illustratively, the power management chip U3 is a buck chip or a boost chip, such as the power management chip U3: SP1596 chip or LM2596 series chip; the third power supply signal is accessed through the power supply management chip U3 to control the battery BAT to store electric energy, and a stable power supply control signal is output through the power supply output negative pin and the power supply output positive pin of the power supply management chip U3 to control the battery BAT to charge or discharge, and the discharge electric energy of the battery BAT can be used for keeping flexible light-emitting control performance on the second light-emitting module 40 under the condition of losing an external power supply, so that the actual visual requirement of a user is met; the power management component 103 has higher charging and discharging stability.
Illustratively, the battery BAT is a lithium battery; the power management chip U3 can control the lithium battery to charge or discharge, and the electric energy stored in the lithium battery is used to discharge the light source control assembly 105 and the standby driving assembly 106, so as to ensure the power supply safety of the internal circuit assembly of the lighting driving circuit 10, and maintain the high efficiency and continuity of the electric energy input of the second light-emitting module 40; for example, when the voltage of the lithium battery is lower than 2.8V, the lithium battery is stopped to discharge through the power management chip U3, so as to protect the lithium battery; when the voltage of the lithium battery is lower than 3V, the power management chip U3 quickly charges the lithium battery; when the voltage of the lithium battery is higher than 3V, the power management chip U3 trickle charges the lithium battery until the voltage of the lithium battery reaches 4.2V, and the charging of the lithium battery is stopped; further, in this embodiment, the lithium battery may be protected by monitoring the temperature of the power management chip U3, so the power management component 103 in this embodiment has a higher charging and discharging safety performance.
As an alternative implementation, fig. 6 shows a schematic circuit structure of the standby driving assembly 106 provided in this embodiment, referring to fig. 6, the standby driving assembly 106 includes: the power driving circuit comprises a power driving chip U4, an eighth capacitor C8, a ninth capacitor C9, a twelfth resistor R12, a fourth diode D4 and a second inductor L2.
The pulse width control pin of the power driving chip U4 is connected to the light source control module 105, and the pulse width control pin of the power driving chip U4 is used for accessing a first pulse driving signal, a second pulse driving signal or a third pulse driving signal; as shown in fig. 6, the pulse width control pin of the power driver chip U4 is the 4 th pin, the power conversion operation of the power driver chip U4 can be changed by the first pulse driving signal, the second pulse driving signal, or the third pulse driving signal, and the power conversion process has a flexible control manner.
As shown in fig. 6, the power input pin of the power driving chip U4, the first end of the eighth capacitor C8, and the first end of the second inductor L2 are commonly connected to the power management component 103, and as shown in fig. 6, the power input pin of the power driving chip U4 is the 6 th pin, and the power management component 103 outputs the discharge power to the power driving chip U4, so that the power driving chip U4 starts a power conversion process; the second end of the second inductor L2 and the anode of the fourth diode D4 are commonly connected to the voltage enable pin of the power driver chip U4, as shown in fig. 6, the voltage enable pin of the power driver chip U4 is the 1 st pin, and the voltage enable pin can enable the power driver chip U4 to maintain normal circuit functions.
The cathode of the fourth diode D4, the power output anode pin of the power driving chip U4, and the first end of the ninth capacitor C9 are connected together to form the power supply positive output terminal of the standby driving component 106; as shown in fig. 6, the power output positive pin of the power driver chip U4 is the 5 th pin.
The negative power output pin of the power driving chip U4 and the first end of the twelfth resistor R12 are commonly connected to form the negative power output terminal of the standby driving component 106, as shown in fig. 6, the negative power output pin of the power driving chip U4 is the 3 rd pin.
The positive power output end of the standby driving component 106 and the negative power output end of the standby driving component 106 are used for being connected with the second light-emitting module 40; after the power driving chip U4 converts the discharging power of the power management component 103, the actual light emitting state of the second light emitting module 40 is flexibly changed, and the flexibility of adjusting the light emitting state of the second light emitting module 40 is improved.
A second end of the twelfth resistor R12, a ground pin of the power driving chip U4, and a second end of the ninth capacitor C9 are commonly connected to the ground GND; as shown in fig. 6, the ground pin of the power driver chip U4 is pin 2.
Illustratively, the model of the power driver chip U4 is: UC3846, KA3511 or SG 3525.
As an alternative embodiment, the switch assembly 104 includes: a dial switch; the dial switch is specifically used for adjusting to a first gear according to the first key signal and generating a first dial signal; adjusting to a second gear according to the second key signal and generating a second dial signal; and adjusting to a third gear according to the third key signal, and generating a third dial signal.
The dial switch has three gears, and the dial switch is adjusted to be in different gears, so that the signal conversion state of the light source control assembly 105 can be flexibly adjusted, and therefore, the dial switch has a simpler and more convenient control process, so that the light emitting state of the second light emitting module 20 can be flexibly adjusted; for example, since the first key signal, the second key signal and the third key signal respectively represent different key information of the user, the dial switch adjusts to different gears according to the key information of the user, and after the power supply device 20 is turned off, the delayed light emitting state of the second light emitting module 20 is changed according to the dial signal output by the dial switch, so that the omnidirectional light source visual requirement of the user is met; therefore, in the present embodiment, the actual light emitting state of the second light emitting module 20 can be adjusted by changing the position of the switch assembly 104, the light emitting control process of the lighting driving circuit 10 is simplified, and great simplicity and flexibility are provided for the delayed light emitting control process of the user.
The power supply device 20 is mains electricity; therefore, the power control module 102 in this embodiment can convert the first power signal output by the utility power to drive the first light emitting module 30 to normally emit a light source, and stably charge the power management module 103, and the power control module 102 has a relatively precise power conversion function; therefore, the lighting driving circuit 10 in this embodiment is compatible to different power system environments, and can ensure the stability of power conversion, and respectively drive the first light-emitting module 30 and the second light-emitting module 40 to be in the rated light-emitting state, so that the practical value is higher.
To better explain the principle of adjusting the light emitting state of the second light emitting module 40 by the lighting driving circuit 10 in this embodiment, a specific example is described below with reference to fig. 1 and fig. 6, as follows:
when the dial switch is in the first position, if the commercial power is connected, the power control module 102 drives the first lighting module 30 to light up, and the power management module 103 is charged through the secondary winding of the first transformer T2.
When the light source control module 105 detects that the commercial power is disconnected, and the level detection pin P1.5 of the light source control chip U2 detects that the falling edge of 3.3V to 0V, the first gear control pin P1-2 of the light source control chip U2 and the second gear control pin P1.3 of the light source control chip U2 are in any state, and the signal output pin P1.0 of the light source control chip U2 outputs the first pulse driving signal with the positive duty ratio of 15% for 2 minutes, so as to control the second light emitting module 40 to be turned on.
When the light source control module 105 detects that the utility power is off and the dial switch is in the second position, under the condition of no utility power input, i.e. the level detection pin P1.5 of the light source control chip U2 does not detect the high level of the voltage of 3.3V, if the level detection pin P1.5 of the light source control chip U2 detects the falling edge of 3.3V to 0V (i.e. the first key switch SW1 is closed), the signal output pin P1.0 of the light source control chip U2 outputs the second pulse driving signal with the positive duty ratio of 33%, so as to control the second light-emitting module 40 to emit light in a delayed manner.
When the light source control module 105 detects that the commercial power is turned off and the dial switch is in the 3-position, if the level detection pin P1.5 of the light source control chip U2 detects a falling edge of 3.3V to 0V (i.e., the second key switch SW2 is turned on), the duty ratio of the third pulse driving signal output by the signal output pin P1.0 of the light source control chip U2 is 100%, so as to control the second light emitting module 40 to emit the light source with the preset intensity.
Therefore, in this embodiment, by changing the gear of the dial switch, the signal conversion state of the light source control assembly 105 can be controlled in real time, and then when the power supply device 20 is turned off, the second light emitting module 20 can exhibit different delayed light emitting performances, the lighting driving circuit 10 has a relatively simple and convenient light source control process, and good use experience is brought to a user.
As an alternative implementation, fig. 7 shows another structural schematic of the lighting driving circuit 10 provided in this embodiment, and compared with the structural schematic of the lighting driving circuit 10 in fig. 1, the lighting driving circuit 10 in fig. 7 further includes: a standby control component 107 and a power detection component 108, wherein the standby control component 107 is connected with the standby driving component 106 and configured to generate an on signal or an off signal according to a trigger signal.
The trigger signal includes circuit control information, and the standby control component 107 can perform signal conversion, and can output an on signal or an off signal through the standby control component 107; the standby driving assembly 106 can be placed in different signal transmission states according to the on signal or the off signal.
The standby driving component 106 is further configured to transmit the first light source driving signal, the second light source driving signal, or the third light source driving signal to the second light emitting module 40 according to the conducting signal; or stops operating in response to a shut down signal.
For example, the standby driving component 106 does not output the first light source driving signal, the second light source driving signal or the third light source driving signal to the second light emitting module 40 according to the turn-off signal, and the second light emitting module 40 is powered off to stop emitting light, so that the second light emitting module 40 has higher flexibility in light emission adjustment.
The standby driving component 106 can be in a stable signal transmission state according to the on signal, and the standby driving component 106 can be in a stop state according to the off signal, so that the standby driving component 106 in this embodiment has higher control flexibility and simplicity; therefore, when the power supply device 20 is turned off, the standby driving component 106 converts the discharging power of the power management component 103 according to various pulse driving signals output by the light source control component 105; the electric energy input state of the second light emitting module 40 can be changed in real time according to the on signal or the off signal; for example, when the second light emitting module 40 is connected to the first light source driving signal, the second light source driving signal or the third light source driving signal, the second light emitting module 40 is in a delayed light emitting state; when the second light emitting module 40 cannot access the first light source driving signal, the second light source driving signal and the third light source driving signal, the second light emitting module 40 is in an off state; therefore, in this embodiment, the standby control component 107 can flexibly change the delayed light emitting state of the second light emitting module 40, so that the flexibility of light emission adjustment of the second light emitting module 40 is improved, the lighting driving circuit 10 has a wider application range, and good light emission control experience is brought to users.
The power detection component 108 is connected to the power management component 103 and the light source control component 105, and configured to detect a supply current of the discharge power of the power management component 103 when the power supply device 20 is not connected to the power detection component 101 and the discharge power of the power management component 103 is output to the standby driving component 106.
When the power supply device 20 is turned off, the power supply conversion state of the standby driving component 106 can be changed through the light source control component 105, so that the standby driving component 106 can adjust the discharging power of the power supply management component 103 and drive the second light-emitting module 40 to emit light; the electric energy detection component 108 in this embodiment has a current detection function, and when the power management component 103 supplies power to the standby driving component 106 through the discharging electric energy, the electric energy detection component 108 can detect the current of the discharging electric energy to obtain an actual electric energy input state of the standby driving component 106, and further, the discharging electric energy through the power management component 103 can continuously and safely supply power to the second light-emitting module 40 to ensure the light-emitting stability and the electric energy access safety of the second light-emitting module 40; for example, after the power detection component 108 detects the supply current of the discharge power of the power management component 103, the power management component 103 can be prevented from being in an under-current discharge state or an over-current discharge state; therefore, the power input safety of the standby driving component 106 can be ensured more safely according to the power supply current detection result of the power detection component 108, so that the standby driving component 106 can perform efficient conversion on the discharge power of the power management component 103 according to various pulse driving signals to accurately adjust the light emitting state of the second light emitting module 40, the power input state of the second light emitting module 40 has flexible adjustability, and the lighting driving circuit 10 has a high application range and safety performance.
Fig. 8 shows a schematic structure of a lamp 80 provided in the present embodiment, please refer to fig. 8, where the lamp 80 includes: the lighting driving circuit 10, the first light emitting module 801, the second light emitting module 802, and the housing 803 as described above; the first light-emitting module 801 and the second light-emitting module 802 are both connected with the lighting driving circuit 10, and the actual light-emitting states of the first light-emitting module 801 and the second light-emitting module 802 can be adjusted in real time through the lighting driving circuit 10, so that the actual light-emitting state of the lamp 80 can meet the actual viewing requirement of a user; and when the lamp 80 loses the external power supply, the lighting driving circuit 10 can still perform the delay power supply control on the second light-emitting module 802, so that the light-emitting state of the second light-emitting module 802 under the power-off condition can be adjusted according to the actual visual function requirement of the user under the condition that the external power supply of the second light-emitting module 802 is disconnected, and the flexibility and stability of the light source adjustment of the second light-emitting module 802 are ensured.
Optionally, the first light emitting module 801 and the second light emitting module 802 both include at least one of a blue light bead, a red light bead, and a red light bead; for example, the lighting driving circuit 10 can change the actual light source display state of the second light emitting module 802 in the power-off delay process in real time, the second light emitting module 802 can emit light sources of various colors to meet the actual visual requirement of the user, and the lighting driving circuit 10 can flexibly adjust the light of the second light emitting module 802.
The housing 803 is used for protecting the lighting driving circuit 10, the first light emitting module 801 and the second light emitting module 802; optionally, the housing 803 is a plastic housing, and the lighting driving circuit 10, the first light emitting module 801 and the second light emitting module 802 can be respectively and physically protected by the housing 803, so as to prevent the first light emitting module 801 and the second light emitting module 802 from being subjected to external physical impact or physical interference; for example, the first light emitting module 801 can be treated to prevent splashing through the housing 803, the first light emitting module 801 can be in a safe and stable light emitting state, and the light emitting state of the second light emitting module 802 can be changed in real time and flexibly through the lighting driving circuit 10 when the external power supply is lost, so that the compatibility and the application range of the lamp 80 are improved, and the user experience is better.
With reference to the embodiments shown in fig. 1 to 7, the lamp 80 in this embodiment has a relatively simplified and integrated circuit module structure, the lighting driving circuit 10 can perform power supply delay for the second light-emitting module 802 under the condition of losing external power supply, and the lighting driving circuit 10 can flexibly adjust the light-emitting state of the second light-emitting module 802 in the power supply delay process, so as to flexibly adjust the light-emitting state of the light-emitting module, and the lamp 80 has a higher practical value, and brings greater convenience for users; therefore, the lamp 80 in this embodiment has lower dimming control cost and simpler dimming control steps, and the user experience is better, which will have an extremely important promoting effect on the development of lighting control in the field, and will generate an important practical application value; the problem of traditional technique can't carry out real-time regulation to the illumination of lamps and lanterns after the outage time delay, flexibility and compatibility are lower, can't satisfy user's many-sided light source regulation demand, practical value is lower is effectively solved.
Various embodiments are described herein for various devices, circuits, apparatuses, systems, and/or methods. Numerous specific details are set forth in order to provide a thorough understanding of the overall structure, function, manufacture, and use of the embodiments as described in the specification and illustrated in the accompanying drawings. However, it will be understood by those skilled in the art that the embodiments may be practiced without such specific details. In other instances, well-known operations, components and elements have been described in detail so as not to obscure the embodiments in the description. It will be appreciated by those of ordinary skill in the art that the embodiments herein and shown are non-limiting examples, and thus, it can be appreciated that the specific structural and functional details disclosed herein may be representative and do not necessarily limit the scope of the embodiments.
Reference throughout the specification to "various embodiments," "in an embodiment," "one embodiment," or "an embodiment," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in various embodiments," "in some embodiments," "in one embodiment," or "in an embodiment," or the like, in places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Thus, a particular feature, structure, or characteristic illustrated or described in connection with one embodiment may be combined, in whole or in part, with features, structures, or characteristics of one or more other embodiments without presuming that such combination is not an illogical or functional limitation. Any directional references (e.g., plus, minus, upper, lower, upward, downward, left, right, leftward, rightward, top, bottom, above …, below …, vertical, horizontal, clockwise, and counterclockwise) are used for identification purposes to aid the reader's understanding of the present disclosure, and do not create limitations, particularly as to the position, orientation, or use of the embodiments.
Although certain embodiments have been described above with a certain degree of particularity, those skilled in the art could make numerous alterations to the disclosed embodiments without departing from the scope of this disclosure. Joinder references (e.g., attached, coupled, connected, and the like) are to be construed broadly and may include intermediate members between a connection of elements and relative movement between elements. Thus, connection references do not necessarily imply that two elements are directly connected/coupled and in a fixed relationship to each other. The use of "for example" throughout this specification should be interpreted broadly and used to provide non-limiting examples of embodiments of the disclosure, and the disclosure is not limited to such examples. It is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative only and not limiting. Changes in detail or structure may be made without departing from the disclosure.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims (10)

1. A lighting driving circuit having a power-off delay control function, comprising:
the power supply detection component is configured to detect whether power supply equipment is connected or not, and if so, receives a first power supply signal output by the power supply equipment;
the power control component is connected with the power detection component and the first light-emitting module, is configured to convert the first power signal to obtain a second power signal and a third power signal, and outputs the second power signal to the first light-emitting module;
a power management component coupled to the power control component and configured to charge in accordance with the third power signal;
a switch assembly configured to generate a first dial signal, a second dial signal, or a third dial signal according to a key signal of a user;
the light source control component is connected with the power supply detection component, the switch component and the power supply management component, and is configured to generate a first pulse driving signal with a first preset duty ratio according to a power failure signal output by the power supply detection component when the power supply detection component is detected not to be connected with power supply equipment, or generate a second pulse driving signal with a second preset duty ratio according to the second dial signal, or generate a third pulse driving signal with a third preset duty ratio according to the third dial signal; and
the second light-emitting module is connected with the light source control assembly, the power management assembly and the second light-emitting module, and is configured to adjust the discharge electric energy of the power management assembly according to the first pulse driving signal to generate a first light source driving signal and control the second light-emitting module to emit light sources within a first preset time period; or adjusting the discharge electric energy of the power management assembly according to the second pulse driving signal to generate a second light source driving signal and control the second light emitting module to emit a light source; or adjusting the discharge electric energy of the power management assembly according to the third pulse driving signal to generate a third light source driving signal, and controlling the second light-emitting module to emit a standby driving assembly of the light source.
2. The lighting driver circuit of claim 1, wherein the power control component comprises:
the power supply comprises a power supply conversion chip, a first switch, a rectifier bridge, a first inductor, a first transformer, a first diode, a second diode, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first capacitor, a second capacitor, a third capacitor and a fourth capacitor;
a first end of the first switch is a positive input end of the power control component, a second end of the first switch and a first end of the first capacitor are connected to a positive power input end of the rectifier bridge in a common mode, and a second end of the first capacitor and a negative power input end of the rectifier bridge are connected in a common mode to form a negative input end of the power control component;
the positive input end of the power control assembly and the negative input end of the power control assembly are both connected with the power supply detection assembly;
a positive output end of the rectifier bridge and an anode of the first diode are connected to the power detection assembly in a common mode, a negative output end of the rectifier bridge, a first end of the second capacitor, a first end of the third capacitor and a first end of the second resistor are connected to an electric energy input pin of the power conversion chip in a common mode, and a second end of the second resistor is connected to an enabling control pin of the power conversion chip in a common mode;
a cathode of the first diode, a second end of the second capacitor and a first end of the first resistor are connected to a first end of the first inductor in a common manner, and a second end of the first inductor, a second end of the first resistor, a second end of the third capacitor, an electric energy feedback pin of the power conversion chip, a cathode of the second diode, a first end of the fourth capacitor and a first end of the fifth resistor are connected to form an electric energy forward output end of the power control assembly in a common manner;
the power output pin of the power conversion chip is connected with one end of the primary winding of the first transformer, the other end of the primary winding of the first transformer, the second end of the fourth capacitor and the second end of the fifth resistor are connected together to form a negative power output end of the power control assembly, the first end of the third resistor and the first end of the fourth resistor are connected together with the ground pin of the power conversion chip, and the second end of the third resistor and the second end of the fourth resistor are connected together with the ground;
the electric energy positive output end of the power control assembly and the electric energy negative output end of the power control assembly are connected with the first light-emitting module;
the secondary winding of the first transformer is connected with the power management component.
3. The lighting driver circuit of claim 1, wherein the light source control component comprises:
the LED display device comprises a light source control chip, a sixth resistor, a seventh resistor, a third diode, a fifth capacitor, a first key switch and a second key switch;
a signal output pin of the light source control chip is connected with a first end of the sixth resistor, and a second end of the sixth resistor is connected with the standby driving component;
a ground pin of the light source control chip, an anode of the third diode and a first end of the fifth capacitor are connected to the ground in common, a cathode of the third diode, a second end of the fifth capacitor and a first end of the seventh resistor are connected to a level detection pin of the light source control chip in common, and a second end of the seventh resistor is used for connecting the power supply detection component and the switch component;
a first gear control pin of the light source control chip is connected with a first end of the first key switch, and a second end of the first key switch is grounded;
a second stop control pin of the light source control chip is connected with a first end of the second key switch, and a second end of the second key switch is grounded;
and the electric energy input pin of the light source control chip is connected with the power management component.
4. The lighting driver circuit of claim 1, wherein the power management component comprises:
an electric energy storage component connected with the light source control component and the standby driving component and configured to be charged or discharged; and
the power control assembly is connected with the power storage component and is configured to detect the voltage of the power storage component and perform charging protection on the power storage component when receiving the third power supply signal; and the electric energy control component detects the voltage of the electric energy storage component and carries out discharge protection on the electric energy storage component when the third power supply signal is not received.
5. The lighting driving circuit according to claim 4, wherein the power control section comprises: the power supply management circuit comprises a power supply management chip, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a sixth capacitor and a seventh capacitor;
the electrical energy storage unit includes: a battery;
the first end of the sixth capacitor, the power input pin of the power management chip, the first end of the eighth resistor and the charging control pin of the power management chip are connected to the power control assembly in common, the second end of the eighth resistor, the first end of the ninth resistor and the power output negative pin of the power management chip are connected to the first end of the eleventh resistor in common, and the voltage stabilization control pin of the power management chip is connected to the first end of the tenth resistor;
the negative electrode of the battery, the second end of the eleventh resistor, the first end of the seventh capacitor, the ground pin of the power management chip, the second end of the tenth resistor, the second end of the ninth resistor and the second end of the sixth capacitor are connected to the ground in common;
and a power output positive pin of the power management chip, a second end of the seventh capacitor and a positive electrode of the battery are connected to the light source control assembly and the standby driving assembly in a common way.
6. The lighting driver circuit of claim 1, wherein the backup drive component comprises:
the power supply driving chip, the eighth capacitor, the ninth capacitor, the twelfth resistor, the fourth diode and the second inductor;
the pulse width control pin of the power driving chip is connected with the light source control component;
a power input pin of the power driving chip, a first end of the eighth capacitor and a first end of the second inductor are connected to the power management component, and a second end of the second inductor and an anode of the fourth diode are connected to a voltage enabling pin of the power driving chip;
the cathode of the fourth diode, the power output anode pin of the power driving chip and the first end of the ninth capacitor are connected in common to form a power supply forward output end of the standby driving component;
a power output negative pin of the power driving chip and a first end of the twelfth resistor are connected together to form a power negative output end of the standby driving component;
the positive output end of the power supply of the standby driving component and the negative output end of the power supply of the standby driving component are used for being connected with the second light-emitting module;
and the second end of the twelfth resistor, the ground pin of the power driving chip and the second end of the ninth capacitor are connected to the ground in common.
7. The lighting driver circuit of claim 1, wherein the switching assembly comprises: a dial switch;
the dial switch is specifically used for adjusting to a first gear according to a first key signal and generating a first dial signal; adjusting to a second gear according to a second key signal, and generating a second dial signal; and adjusting to a third gear according to a third key signal, and generating a third dial signal.
8. The lighting driving circuit according to claim 1, further comprising:
the standby control component is connected with the standby driving component and is configured to generate an on signal or an off signal according to a trigger signal;
the standby driving component is further used for transmitting the first light source driving signal or the second light source driving signal or the third light source driving signal to the second light emitting module according to the conducting signal; or stopping working according to the turn-off signal.
9. The lighting driving circuit according to claim 1, further comprising:
the power supply detection component is connected with the power supply management component and the light source control component and is configured to detect the supply current of the discharging electric energy of the power supply management component when the power supply detection component is not connected with the power supply equipment and the discharging electric energy of the power supply management component is output to the standby driving component.
10. A light fixture, comprising:
the lighting driving circuit according to any one of claims 1 to 9;
the first light-emitting module and the second light-emitting module are both connected with the lighting driving circuit; and
and the shell is used for packaging and protecting the lighting driving circuit, the first light-emitting module and the second light-emitting module.
CN201911308313.2A 2019-12-18 2019-12-18 Illumination driving circuit with power-off delay control function and lamp Pending CN113015292A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911308313.2A CN113015292A (en) 2019-12-18 2019-12-18 Illumination driving circuit with power-off delay control function and lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911308313.2A CN113015292A (en) 2019-12-18 2019-12-18 Illumination driving circuit with power-off delay control function and lamp

Publications (1)

Publication Number Publication Date
CN113015292A true CN113015292A (en) 2021-06-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911308313.2A Pending CN113015292A (en) 2019-12-18 2019-12-18 Illumination driving circuit with power-off delay control function and lamp

Country Status (1)

Country Link
CN (1) CN113015292A (en)

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