CN219107717U

CN219107717U - Emergency light control system and emergency lighting system

Info

Publication number: CN219107717U
Application number: CN202223199380.5U
Authority: CN
Inventors: 郭毅; 欧阳正伟
Original assignee: Xiamen Guangyuan Lighting Co ltd
Current assignee: Xiamen Guangyuan Lighting Co ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-05-30
Anticipated expiration: 2032-11-30

Abstract

The disclosure provides an emergency lamp control system and an emergency lighting system, and relates to the technical field of emergency lighting. The emergency light control system includes. The power storage module is used for supplying power to at least one emergency lamp; the charging module comprises an input end and an output end, wherein the input end is connected with an external power supply, the output end is connected with the power storage module, and the charging module is used for charging the power storage module; the control module comprises a control unit and a first switch unit, the control unit is connected with the charging module, the control unit is used for monitoring whether an external power supply exists in the charging module, the control unit is connected with the first switch unit, and the first switch unit is used for controlling the working state of at least one emergency lamp; when the control unit monitors that an external power supply exists, the control unit is used for controlling the first switch unit to be in an invalid state; when the control unit detects that no external power supply exists, the control unit controls at least one emergency lamp to be started, and the control unit is used for controlling the first switch unit to be in an effective state.

Description

Emergency light control system and emergency lighting system

Technical Field

The disclosure relates to the technical field of emergency lighting, in particular to an emergency lamp control system and an emergency lighting system.

Background

Emergency lamps are used for emergency illumination, and a large number of buildings or enterprises are provided with a large number of emergency illumination lamps, so that the emergency lamps can guide trapped people to evacuate or spread fire-fighting rescue actions after a fire disaster, power failure or abnormal power failure occurs.

In the related art, an emergency lamp is generally and fixedly arranged on a wall body, an emergency lamp control system charges when an external power supply exists, enters an emergency state when power is off, and automatically emits light for illumination. But because the emergency lamp control system is unreasonable in design, most emergency lamps are started only after fire, power failure or abnormal power failure occur, and are in an idle state at ordinary times, so that the emergency lamps cannot be used as working lamps for mobile illumination, and the problem of poor practicality is solved.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

The present disclosure is directed to an emergency light control system and an apparatus thereof, which overcome the problem that the emergency light in the related art cannot be used as a working light for moving illumination, and the practicality is poor, at least to some extent.

Other features and advantages of the present disclosure will be apparent from the following detailed description, or may be learned in part by the practice of the disclosure.

According to one aspect of the present disclosure, there is provided an emergency light control system comprising: the system comprises an electric storage module, a charging module and a control module, wherein the electric storage module is used for supplying power to at least one emergency lamp; the charging module comprises an input end and an output end, wherein the input end is connected with an external power supply, the output end is connected with the power storage module, and the charging module is used for charging the power storage module; the control module comprises a control unit and a first switch unit, the control unit is connected with the charging module, the control unit is used for monitoring whether an external power supply exists in the charging module, the control unit is connected with the first switch unit, and the first switch unit is used for controlling the working state of the at least one emergency lamp; when the control unit monitors that an external power supply exists, the control unit is used for controlling the first switch unit to be in an invalid state; when the control unit detects that no external power supply exists, the control unit controls the at least one emergency lamp to be turned on, and the control unit is used for controlling the first switch unit to be in an effective state.

In one embodiment of the disclosure, the control module further includes a monitoring unit connected to the control unit and the power storage module, respectively, and the control unit monitors whether the charging module has an external power supply through the monitoring unit; wherein when the control unit detects that an external power supply exists, the control unit controls the power storage module to stop supplying power to the at least one emergency lamp; when the control unit detects that no external power source exists, the control unit controls the power storage module to supply power to the at least one emergency lamp.

In one embodiment of the present disclosure, the control module further comprises at least one driving unit, through which the control unit controls the at least one emergency lamp.

In one embodiment of the disclosure, the driving unit includes a MOS transistor, a gate of the MOS transistor is connected to the control unit, and a drain of the MOS transistor is connected to the at least one emergency lamp; when the control unit controls the MOS tube to be conducted, the power storage module supplies power to the at least one emergency lamp; and when the control unit controls the MOS tube to cut off, the power storage module stops supplying power to the at least one emergency lamp.

In one embodiment of the disclosure, the charging module includes a power management chip, the charging module inputs a level signal to the control unit, and the control unit determines a charging state of the power storage module according to the level signal input by the power management chip.

In one embodiment of the disclosure, the control module further includes a second switching unit including a transistor connected to the control unit and the power management chip, respectively; when the control unit judges that the electric storage module is charged, the control unit controls the transistor to be conducted, and the charging module stops charging the electric storage module; when the control unit judges that the electric storage module is not charged, the control unit controls the transistor to be cut off, and the charging module charges the electric storage module.

In an embodiment of the disclosure, the driving unit further includes a constant current chip and an external resistor, the constant current chip includes an input end, a monitoring end and an output end, the input end is connected with the control unit, the monitoring end is connected with one end of the external resistor, the output end is connected with the gate of the MOS tube, the other end of the external resistor is connected with the source of the MOS tube, and the constant current chip is used for providing constant current for the at least one emergency lamp.

In one embodiment of the disclosure, the charging module includes a Type-C interface, and the charging module is connected with the external power source through the Type-C interface.

In one embodiment of the disclosure, the control module further includes a plurality of indicator lamps, and the control unit is connected with the plurality of indicator lamps, and the plurality of indicator lamps are used for indicating the electric quantity of the electric storage module.

According to another aspect of the present disclosure, there is provided an emergency lighting system comprising the control system described above, and at least one emergency light, the control system being connected to the at least one emergency light.

The embodiment of the disclosure provides an emergency lamp control system and an emergency lighting system. When no external power supply exists, the control unit controls the emergency lamp to enter an emergency state, and the emergency lamp is turned on. Meanwhile, the control unit controls the first switch unit to be in an effective state, can control the working state of the emergency lamp, can be used as the working lamp, avoids the problem that the emergency lamp is idle for a long time, and improves the practicability.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.

Fig. 1 illustrates an electrical schematic of an emergency light control system in an embodiment of the present disclosure.

Fig. 2 shows a schematic circuit diagram of a control unit and a first switching unit in an emergency light control system according to an embodiment of the present disclosure.

Fig. 3 shows a schematic circuit diagram of a charging module and a power storage module in an emergency light control system according to an embodiment of the present disclosure.

Fig. 4 shows a schematic circuit diagram of a monitoring unit and a second switching unit in an emergency light control system according to an embodiment of the disclosure.

Fig. 5 shows a schematic circuit diagram of a plurality of indicator lights in an emergency light control system in an embodiment of the disclosure.

Fig. 6 shows a schematic circuit diagram of a first driving circuit and a main light source in an emergency light control system according to an embodiment of the disclosure.

Fig. 7 shows a schematic circuit diagram of a secondary light source and a secondary drive circuit in an emergency light control system according to an embodiment of the disclosure.

Fig. 8 shows a schematic circuit diagram of an emergency light control system in an embodiment of the present disclosure.

FIG. 9 illustrates an electrical schematic of an emergency lighting system in an embodiment of the present disclosure

Wherein reference numerals are as follows:

100. a control module; 110. a control unit; 120. a first switching unit; 130. a second switching unit; 140. a monitoring unit; 150. a first driving unit; 160. a second driving unit; 170. a plurality of indicator lights;

200. a charging module;

300. an electricity storage module;

400. an emergency light; 410. a primary light source; 420. secondary light source.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software or in one or more hardware modules or integrated circuits or in different networks and/or processor devices and/or microcontroller devices.

Referring to fig. 1, an emergency light control system that can embody principles of the present disclosure is representatively illustrated in fig. 1 and may include: a control module 100, a charging module 200, and a power storage module 300, wherein the control module 100 includes a control unit 110 and a first switching unit 120. The power storage module 300 is capable of powering at least one emergency light, and the control module 100 is capable of monitoring whether the charging module 200 has an external power source. When the control unit 110 detects that the external power source exists, the control unit 110 can control the first switching unit 120 to be in an invalid state; when the control unit 110 detects that there is no external power source, the control unit 110 controls at least one emergency lamp to be turned on, and the control unit 110 can control the first switching unit 120 to be in an active state.

The power storage module 300 may be a rechargeable lithium battery, which is a type of battery using a nonaqueous electrolyte solution with lithium metal or lithium alloy as a positive/negative electrode material. The charging module 200 may supply power to at least one emergency light, and may also supply power to the control module 100.

The charging module 200 includes an output end and an input end, the input end is connected to an external power supply, and the output end is connected to the charging module 200. When an external power source is present, the charging module 200 is able to charge the power storage module 300.

The control module 100 includes a control unit 110 and a first switching unit 120. The control unit 110 may be connected to an input point of the charging module 200 for monitoring whether an external power source exists. Wherein the presence of the external power source may include: the power supply conditions of commercial power, charging treasures and the like exist; the absence of an external power source may include: and when the power is cut, abnormal power cut, artificial power cut and the like, no external power supply exists. The control unit 110 is connected to the first switch unit 120, and the control unit 110 can control the first switch unit 120 to be in an active or inactive state according to the monitoring result.

In the present embodiment, when there is an external power source, the charging module 200 normally charges the power storage module 300, and the first switching unit 120 is in an inactive state; in the absence of external power, the control module 100 controls the emergency light to enter an emergency state, and the emergency light is turned on. Meanwhile, the control module 100 controls the first switch unit 120 to be in an effective state, can control the working state of the emergency lamp, can be used as the working lamp, avoids the problem that the emergency lamp is idle for a long time, and improves the practicability.

Referring to fig. 3 and 8, the charging module 200 is connected to the power storage module 300, and the charging module 200 is capable of charging the power storage module 300.

The charging module 200 may include a power management chip U3 and a USB (Universal Serial Bus ) interface, wherein the power management chip U3 may be SLM6600 and the USB interface may be a TYPE-C interface.

In one embodiment, the charging module 200 is connected to an external power source through a Type-C interface. The first pin of the power management chip U3 is connected with the positive electrode of the TYPE-C interface, and the sixth pin and the eighth pin of the power management chip U3 are respectively connected with the positive electrode of the lithium battery BAT 1. The lithium battery BAT1 can be charged by being connected with the power management chip U3 and an external power supply through TYPE-C interfaces respectively.

In one embodiment, a resistor R25 is connected in series between the positive electrode of the lithium battery BAT1 and the sixth pin of the power management chip U3, where the resistor R25 can regulate the full charge voltage of the lithium battery BAT 1.

Referring to fig. 2, 3, 4 and 8, the control unit 110 may be a single-chip microcomputer U1, and the model of the single-chip microcomputer U1 may be SN8F570210S. The singlechip U1 is connected with the charging module 200 and is used for monitoring whether the charging module 200 is powered by an external power supply.

In one embodiment, the control module 100 may include a monitoring unit 140, and the monitoring unit 140 is connected to the control unit 110 and the power storage module 300, respectively. The control unit 110 monitors whether the charging module 200 has an external power source through the monitoring unit 140.

The monitoring unit 140 may include resistors R8, R9, and R10, where an input end of the resistor R8 is connected to the first pin of the power management chip U3, an output end of the resistor R8 is connected to an input end of the resistor R9, an output end of the resistor R9 is grounded, an input end of the resistor R10 is connected to a node between the resistor R8 and the resistor R9, and an output end of the resistor R10 is connected to the seventh pin of the single chip microcomputer U1.

When the resistors R8 and R9 have voltage division values, the seventh pin of the singlechip U1 can detect a high-level signal, and the singlechip U1 determines that the charging module 200 is powered by an external power supply; when the resistors R8 and R9 have no voltage division value, the seventh pin of the singlechip U1 can detect a low-level signal, and the singlechip U1 determines that the charging module 200 is not powered by an external power supply.

Referring to fig. 2, 6, 7 and 8, when the control unit 110 detects the presence of an external power source, the control unit 110 controls the power storage module 300 to stop supplying power to at least one emergency lamp; when the control unit 110 detects that the external power source is not present, the control unit 110 controls the power storage module 300 to supply power to at least one emergency lamp.

In one embodiment, the control module 100 further comprises at least one drive unit, by which the control unit 110 controls the at least one emergency light.

Specifically, singlechip U1 is connected with at least one drive unit, and drive unit's output is connected with the negative pole of emergency light, and the anodal of emergency light is connected with the anodal of lithium cell BAT 1.

When the singlechip U1 monitors that an external power supply exists, the singlechip U1 outputs a low-level signal to the driving unit, so that a circuit of the driving unit is broken, a circuit between the lithium battery BAT1 and the emergency lamp is broken, and the lithium battery BAT1 is controlled not to supply power to the emergency lamp; when the singlechip U1 monitors that no external power supply exists, the singlechip U1 can output a high-level signal to the driving unit, so that a circuit of the driving unit is conducted, and then the circuit between the lithium battery BAT1 and the emergency lamp is conducted, and the lithium battery BAT1 can be controlled to supply power to the emergency lamp.

Referring to fig. 2, 6, 7 and 8, the control module 100 further includes at least one driving unit, and the control unit 110 controls at least one emergency lamp through the at least one driving unit.

The control system may be connected to two emergency lamps, which may be a primary light source 410 and a secondary light source 420. The control module 100 may include two driving units, which may be a first driving unit 150 and a second driving unit 160. Although the control system described above includes two drive units and the control system is capable of controlling two emergency lamps, the present disclosure is not limited thereto.

In one embodiment, the primary light source 410 may be 1 LED lamp, but the primary light source 410 is not limited herein as to how many LED lamps are comprised. The first driving unit 150 includes a MOS transistor Q1, a gate of the MOS transistor Q1 is connected to the control unit 110, a drain of the MOS transistor Q1 is connected to the main light source 410, and the control unit 110 controls the first driving unit 150 to be turned on or off to control the power storage module 300 to supply or stop supplying power to the main light source 410.

Specifically, the gate of the MOS transistor Q1 is connected to the fifth pin of the single-chip microcomputer U1, the source of the MOS transistor Q1 is grounded, the drain of the MOS transistor Q1 is connected to the negative electrode of the main light source 410, and the positive electrode of the main light source 410 is connected to the positive electrode of the lithium battery BAT 1.

When the fifth pin of the single-chip microcomputer U1 outputs a high level, the MOS transistor Q1 is turned on, and the lithium battery BAT1 supplies power to the main light source 410. When the fifth pin of the single-chip microcomputer U1 outputs a low level, the MOS transistor Q1 is cut off, and the lithium battery BAT1 stops supplying power to the main light source 410. In addition, the fifth pin of the single-chip microcomputer U1 can output PWM signals with different duty ratios, which are used to control the conduction degree of the MOS transistor Q1, and further control the brightness of the main light source 410.

In one embodiment, the first driving unit 150 includes a constant current chip U2, a MOS transistor Q1, and an external resistor, where the constant current chip U2 may be QX7138, and the external resistor includes three parallel resistors R13, R14, and R15. The constant current chip comprises an input end, a monitoring end and an output end, wherein the input end is connected with the control unit 110, the monitoring end is connected with one end of an external resistor, the output end is connected with a grid electrode of the MOS tube, the other end of the external resistor is connected with a source electrode of the MOS tube, and the constant current chip is used for providing constant current for the main light source 410.

Specifically, the fifth pin of the constant current chip U2 is connected with the fifth pin of the single chip microcomputer U1, the fourth pin of the constant current chip U2 is connected with the gate of the MOS transistor Q1, the second pin of the constant current chip U2 is connected with the external resistor and the source of the MOS transistor Q1, the third pin of the constant current chip U2 is connected with the positive electrode of the lithium battery BAT1, the first pin of the constant current chip U2 is grounded, the source of the MOS transistor Q1 is grounded, and the drain of the MOS transistor Q1 is connected with the negative electrode of the main light source 410. The second pin of the constant current chip U2 detects the current of the main light source 410 in real time, so as to keep the main light source 410 working at constant current.

In addition, the fifth pin of the singlechip U1 can output PWM signals, and the duty ratio of the PWM signals can be increased by 10% from 10% to 100% in sequence. When no external power source exists, the lithium battery BAT1 supplies power to the single chip microcomputer U1, and the single chip microcomputer U1 detects that the resistor R8 and the resistor R9 have no voltage division value, and then the main light source 410 is automatically turned on. When the main light source 410 is turned on, the fifth pin of the single-chip microcomputer U1 outputs a high level, the fourth pin of the constant current chip U2 also outputs a high level, the MOS transistor Q1 is turned on, and the main light source 410 is turned on. The fifth pin of the singlechip U1 outputs PWM signals with different duty ratios, and controls the conduction degree of the MOS tube Q1, thereby controlling the brightness of the main light source 410.

In one embodiment, the secondary light source 420 may be 1 LED lamp, but the secondary source is composed of how many LED lamps, not limited herein. The second driving unit 160 includes a MOS transistor Q2, a gate of the MOS transistor Q2 is connected to the control unit 110, a drain of the MOS transistor Q2 is connected to the secondary light source 420, and the control unit 110 controls the second driving unit 160 to be turned on or off so as to control the power storage module 300 to supply or stop supplying power to the secondary light source 420.

Specifically, the gate of the MOS transistor Q2 is connected to the fourth pin of the single-chip microcomputer U1, the source of the MOS transistor Q2 is grounded, the drain of the MOS transistor Q2 is connected to the negative electrode of the secondary light source 420, and the positive electrode of the secondary light source 420 is connected to the positive electrode of the lithium battery BAT 1.

When the fourth pin of the single-chip microcomputer U1 outputs a high level, the MOS transistor Q2 is conducted, and the lithium battery BAT1 supplies power to the secondary light source 420. When the fourth pin of the single-chip microcomputer U1 outputs a low level, the MOS transistor Q2 is cut off, and the lithium battery BAT1 stops supplying power to the main light source 410. In addition, the fourth pin of the singlechip U1 can output PWM signals with different duty ratios, which are used to control the conduction degree of the MOS transistor Q2, and further control the brightness of the main light source 410.

Referring to fig. 2 and 8, the control unit 110 controls the first switching unit 120 to be in an active or inactive state.

In one embodiment, the first switch unit 120 includes a resistor R5, a resistor R6, and a key SW1, one end of the resistor R6 is connected to the positive electrode of the lithium battery BAT1, a node between the other end of the resistor R6 and one end of the resistor R5 is connected to the thirteenth pin of the single chip U1, the other end of the resistor R5 is connected to one end of the key SW1, and the other end of the key SW1 is grounded. The fifth pin and the fourth pin of the single-chip microcomputer U1 are respectively connected with the main light source 410 and the secondary light source 420.

Wherein, when the control unit 110 detects that the external power source exists, the control unit 110 can control the first switch unit 120 to be in an invalid state; when the control unit 110 detects that there is no external power source, the control unit 110 controls at least one emergency lamp to be turned on, and the control unit 110 can control the first switching unit 120 to be in an active state.

Specifically, when the control unit 110 detects that an external power source exists, the fifth pin and the fourth pin of the single-chip microcomputer U1 continuously output low-level signals, and the main light source 410 and the secondary light source 420 are in an off state. At this time, pressing the key SW1 does not affect the fifth pin and the fourth pin of the single chip microcomputer U1 to output low level signals, and the main light source 410 and the sub light source 420 are in the off state, so that the key SW1 is in the inactive state.

When the control unit 110 detects that no external power source exists, the fifth pin and the fourth pin of the single chip microcomputer U1 can output high-low level signals. For example: when no external power supply exists, the emergency state is automatically entered, the fifth pin of the singlechip U1 outputs high level, the fourth pin outputs low level, the main light source 410 is automatically lightened, and the secondary light source 420 is not lightened. Meanwhile, pressing the key SW1, the singlechip U1 can control the fifth pin and the fourth pin of the singlechip U1 according to the control signal of the key SW1, so that the fifth pin and the fourth pin output high or low level signals, and further control the working state of at least one emergency lamp, and the key SW1 is in an effective state.

Referring to fig. 2, 6, 7 and 8, the control unit 110 is connected to a first switching unit 120, and the first switching unit 120 is used to control an operation state of at least one emergency lamp.

When the external power is not present, the first switching unit 120 is in an active state, and the key SW1 may control the operation state of the main light source 410 or the sub light source 420.

For example, the brightness of the main light source 410 is adjusted. When no external power source exists, the main light source 410 will automatically light up, the initial setting of the PWM duty cycle output by the single-chip microcomputer U1 may be 10%, and the initial brightness of the main light source 410 is 10%. The brightness of the main light source 410 can be adjusted by pressing the key SW1 for a long time, and at this time, the duty ratio of PWM is continuously increased, and the impedance of the MOS transistor Q1 is gradually decreased. Accordingly, the current flowing through the MOS transistor Q1 also gradually increases, and the main light source 410 gradually becomes bright. Until the duty ratio of PWM becomes 100%, the MOS transistor Q1 is fully turned on, and the main light source 410 reaches the maximum brightness. If the key SW1 is not released at the brightness of 100%, the brightness is reduced from 100% to 10%, and then the brightness is increased from 10% to 100%, and the dimming operation is stopped until the key SW1 is released.

For example, the light of the primary light source 410 or the secondary light source 420 is switched. When no external power is present, switching of the main light source 410 and the sub light source 420 can be performed every time the key SW1 is pressed. When the external power is not supplied at the beginning, the main light source 410 is started, the main light source 410 is turned off when the key SW1 is pressed, the secondary light source 420 is started, and the main light source 410 can be switched to be on when the key SW1 is pressed, and the secondary light source 420 is turned off. The dimming operation of the secondary light source 420 may be referred to as follows: the operation of adjusting the brightness of the main light source 410 by pressing the key SW1 for a long time is not described here.

Referring to fig. 2, 5 and 8, the control module 100 further includes a plurality of indicator lamps 170, and the control unit 110 is connected to the plurality of indicator lamps 170, and the plurality of indicator lamps 170 are used to indicate the amount of electricity of the electricity storage module 300.

The plurality of indicator lights 170 may include 4 LED indicator lights, LED1, LED2, LED3, and LED4, respectively. The positive pole of LED1 is connected with the eighth pin of singlechip U1, and the positive pole of LED2 is connected with the ninth pin of singlechip U1, and the positive pole of LED3 is connected with the tenth pin of singlechip U1, and the positive pole of LED4 is connected with the eleventh pin of singlechip U1. The singlechip U1 can control the eighth pin, the ninth pin, the tenth pin and the eleventh pin to output high-low level signals according to the level signals of the fourth pin of the power management chip U3 received by the third pin, so as to control the on and off of the

LEDs

1, 2, 3 and 4.

Wherein, the LED1 is a red lamp, the

LEDs

2, 3 and 4 are green lamps, and the

LEDs

1, 2, 3 and 4 are turned on and off in combination, the electricity storage module 300 may be divided into 25%, 50%, 75% and 100%. For example, only LED1 is on, and the amount of power remains 25% and below; only LED1 and LED2 are on, the amount of electricity remains 25% to 50%; only LED1, LED2 and LED3 are on, and the amount of electricity is 50% to 75%; four lamps from LED1 to LED4 are all on, and the electric quantity is 75% to 100%.

Referring to fig. 2, 3, 4 and 8, the charging module 200 inputs a level signal to the control unit 110, and the control unit 110 determines the charging state of the power storage module 300 according to the level signal input from the power management chip

In one embodiment, a fourth pin of the power management chip U3 is connected with a third pin of the single chip microcomputer U1, a sixth pin and an eighth pin of the power management chip U3 are respectively connected with a positive electrode of the lithium battery BAT1, and the single chip microcomputer U1 can determine whether the charging of the lithium battery BAT1 is completed.

Specifically, the fourth pin of the power management chip U3 is a charging state indication end. When the lithium battery BAT1 is being charged, the fourth pin of the power management chip U3 is pulled to a low level by the internal switch, and the third pin of the single chip microcomputer U1 detects a low level signal, so that the single chip microcomputer U1 judges that the charging of the lithium battery BAT1 is not finished; when the lithium battery BAT1 is charged, the fourth pin of the power management chip U3 is in a high-resistance state, and the third pin of the singlechip U1 detects a high-level signal, so that the singlechip U1 judges that the lithium battery BAT1 is charged.

Although in the above embodiment, the fourth pin of the power management chip U3 is connected to the third pin of the single chip microcomputer U1, for determining the charging state of the power storage module 300. However, the present utility model is not limited thereto, and for example, the third pin of the power management chip U3 is connected to the third pin of the single chip microcomputer U1, and it is also possible to determine whether the charging of the power storage module 300 is completed.

Specifically, the third pin of the power management chip U3 is a charging completion indicator. When the charging of the lithium battery BAT1 is completed, the third pin of the power management chip U3 is pulled to a low level by the internal switch, and the singlechip U1 judges that the charging of the lithium battery BAT1 is completed when the third pin of the singlechip U1 detects a low level signal; when the lithium battery BAT1 is being charged, the third pin of the power management chip U3 is in a high-resistance state, and the singlechip U1 judges that the charging of the lithium battery BAT1 is not finished when the third pin of the singlechip U1 detects a high-level signal.

In one embodiment, the control module 100 further includes a second switching unit 130, and the second switching unit 130 includes transistors connected to the control unit 110 and the power management chip U3, respectively. When the electric storage module 300 is charged, the control unit 110 controls the transistor to be turned on, and the charging module 200 stops charging the electric storage module 300; when the charge of the power storage module 300 is not completed, the control unit 110 controls the transistor to be turned off, and the charge module 200 charges the power storage module 300.

The transistor may include a diode, a triode, a field effect transistor, a thyristor, or the like, and in this embodiment, the transistor is described as a triode. The base of the triode Q3 is connected with the second pin of the singlechip U1, the collector of the triode Q3 is connected with a node between the fifth pin and the first pin of the power management chip U3, and the emitter of the triode Q3 is grounded.

When the charging of the lithium battery BAT1 is not completed, the second pin of the singlechip U1 outputs a low-level signal, and the triode Q3 is in a cut-off state, so that the charging module 200 charges the lithium battery BAT 1; when the charging of the lithium battery BAT1 is completed, the second pin of the single-chip microcomputer U1 outputs a high-level signal, the triode Q3 is in a conducting state, and the charging module 200 stops charging the lithium battery BAT 1.

In this embodiment, it is possible to realize that the battery BAT1 maintains a safe state of charge, avoiding the drawbacks of overcharge and the like caused by long-term energization. In addition, the lithium battery BAT1 can be kept in a full state as far as possible, so that the emergency lamp can have a long-term, stable and reliable standby working state. When no external power supply is provided, such as power failure, abnormal power failure, manual power failure and the like, the lithium battery BAT1 can provide enough electric energy for the load, so that emergency lighting is realized, and the continuous working time is long.

Referring to fig. 9, an emergency lighting system that can embody principles of the present disclosure is representatively illustrated in fig. 9 and includes the control system described above and at least one emergency light 400 with the control system being coupled to the at least one emergency light 400. When no external power is available, the control system can control the emergency lamp 400 to enter an emergency state, and the emergency lamp 400 is turned on. Meanwhile, the first switch unit 120 in the control system is in an effective state, can control the working state of the emergency lamp 400, can be used as a working lamp, avoids the problem that the emergency lamp 400 is idle for a long time, and improves the practicability.

The control system may include a control module 100, a charging module 200, a power storage module 300, and at least one emergency light 400. The power storage module 300 is used to supply power to at least one emergency lamp 400; the charging module 200 comprises an input end and an output end, wherein the input end is connected with an external power supply, the output end is connected with the power storage module 300, and the charging module 200 is used for charging the power storage module 300;

the control module 100 includes a control unit 110 and a first switch unit 120, the control unit 110 is connected with the charging module 200, the control unit 110 is used for monitoring whether the charging module 200 has an external power supply, the control unit 110 is connected with the first switch unit 120, and the first switch unit 120 is used for controlling the working state of at least one emergency lamp 400; when the control unit 110 detects that an external power source exists, the control unit 110 is configured to control the first switch unit 120 to be in an inactive state; when the control unit 110 detects that no external power is present, the control unit 110 is configured to control the first switching unit 120 to be in an active state. The control system describes the above embodiments in detail, and will not be described in detail herein.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims

1. An emergency light control system, comprising:

the power storage module is used for supplying power to at least one emergency lamp;

the charging module comprises an input end and an output end, wherein the input end is connected with an external power supply, the output end is connected with the power storage module, and the charging module is used for charging the power storage module;

the control module comprises a control unit and a first switch unit, the control unit is connected with the charging module, the control unit is used for monitoring whether an external power supply exists in the charging module, the control unit is connected with the first switch unit, and the first switch unit is used for controlling the working state of the at least one emergency lamp;

when the control unit monitors that an external power supply exists, the control unit is used for controlling the first switch unit to be in an invalid state;

when the control unit detects that no external power supply exists, the control unit controls the at least one emergency lamp to be turned on, and the control unit is used for controlling the first switch unit to be in an effective state.

2. The emergency light control system according to claim 1, wherein the control module further comprises a monitoring unit connected to the control unit and the power storage module, respectively, the control unit monitoring whether the charging module has an external power supply through the monitoring unit;

wherein when the control unit detects that an external power supply exists, the control unit controls the power storage module to stop supplying power to the at least one emergency lamp;

when the control unit detects that no external power source exists, the control unit controls the power storage module to supply power to the at least one emergency lamp.

3. The emergency light control system of claim 1, wherein the control module further comprises at least one drive unit, the control unit controlling the at least one emergency light via the at least one drive unit.

4. The emergency light control system of claim 3, wherein the driving unit comprises a MOS transistor, a gate of the MOS transistor is connected to the control unit, and a drain of the MOS transistor is connected to the at least one emergency light;

when the control unit controls the MOS tube to be conducted, the power storage module supplies power to the at least one emergency lamp;

and when the control unit controls the MOS tube to cut off, the power storage module stops supplying power to the at least one emergency lamp.

5. The emergency light control system according to claim 1, wherein the charging module includes a power management chip, the charging module inputs a level signal to the control unit, and the control unit judges the state of charge of the power storage module based on the level signal input from the power management chip.

6. The emergency light control system of claim 5, wherein the control module further comprises a second switching unit comprising a transistor connected to the control unit and the power management chip, respectively;

when the control unit judges that the electric storage module is charged, the control unit controls the transistor to be conducted, and the charging module stops charging the electric storage module;

when the control unit judges that the electric storage module is not charged, the control unit controls the transistor to be cut off, and the charging module charges the electric storage module.

7. The emergency lamp control system of claim 4, wherein the driving unit further comprises a constant current chip and an external resistor, the constant current chip comprises an input end, a monitoring end and an output end, the input end is connected with the control unit, the monitoring end is connected with one end of the external resistor, the output end is connected with the grid electrode of the MOS tube, the other end of the external resistor is connected with the source electrode of the MOS tube, and the constant current chip is used for providing constant current for the at least one emergency lamp.

8. The emergency light control system of claim 1, wherein the charging module comprises a Type-C interface, the charging module being connected to the external power source through the Type-C interface.

9. The emergency light control system of claim 1, wherein the control module further comprises a plurality of indicator lights, the control unit being coupled to the plurality of indicator lights, the plurality of indicator lights being configured to indicate an amount of power of the power storage module.

10. An emergency lighting system, characterized in that it comprises a control system according to any one of claims 1 to 9, and at least one emergency light, said control system being connected to said at least one emergency light.