Delayed turn-off flashing light indicating circuit and energy storage equipment

Abstract

The utility model provides a delayed turn-off flashing light indicating circuit and energy storage equipment. The time-delay turn-off flashing light indicating circuit comprises a time-delay circuit, a switch control circuit and a flashing light controller, the time-delay circuit comprises a first resistor and a time-delay capacitor, the switch control circuit comprises a first electronic switch tube, a second electronic switch tube and a third electronic switch tube, the time-delay capacitor is connected with the control end of the first electronic switch tube, and the time-delay capacitor is connected with the control end of the second electronic switch tube. The control end of the second electronic switch tube is connected with the first electronic switch tube, the control end of the third electronic switch tube is connected with the second electronic switch tube, and the third electronic switch tube is connected with the flashing light controller. When the time-delay capacitor is charged, the first electronic switch tube is cut off, the second and third electronic switch tubes are conducted, the flashing light controller is powered on and the LED flashes, after the time-delay capacitor is charged, the first electronic switch tube is conducted, the second and third electronic switch tubes are cut off, the flashing light controller is turned off and the LED stops flashing, and time-delay closing is achieved only through a circuit composed of hardware in the process. And the use cost of the delayed turn-off flashing light indicating circuit is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of flash lamp indication circuits, and particularly to a delay-off flash lamp indication circuit and an energy storage device. Background Art

[0002] Flash lamp indication circuits are widely used in various fields, such as indicator lights, signal lights, alarm lights, etc., and are given different meanings in different usage scenarios. Relatively many manufacturers usually introduce a period of flash lamps when starting up to display the product and enhance the competitiveness of the product in order to increase the technological sense of their products.

[0003] In traditional designs, designers usually use an MCU to control the flashing and on / off of LEDs. Adding an MCU alone to achieve the flashing of LEDs will increase the product cost and is not suitable for low-cost solutions. For example, the patent application with the application number CN202311360714.9 discloses a main power switch with a delay power-off function, including a control unit, a switch K, an LED indicator, and an alarm. The switch K is connected to the control unit, the control unit is connected to the alarm, and an external power supply is provided at the power supply input end of the control unit. The control unit includes a signal processing and decision-making device, a data transceiver device, and a voltage conversion device. The signal processing and decision-making device and the data transceiver device are connected bidirectionally, including the control unit, the switch K, the LED indicator, and the alarm. By integrating the control unit, the switch K, the LED indicator, and the alarm in one switch, the main power switch has a small volume, and only one switch is required to achieve the vehicle's delay power-off function, occupying less space, reducing the difficulty of layout and installation, being more convenient for maintenance and repair, and adding functions such as vehicle power relay fault detection, alarm, and fault information reading. This solution requires using an MCU to control the delayed flashing of the indicator light, resulting in a relatively high usage cost and not being suitable for low-cost environmental conditions. Summary of the Utility Model

[0004] The purpose of the present disclosure is to overcome the deficiencies in the prior art and provide a delay-off flash lamp indication circuit and an energy storage device controlled by low-cost hardware.

[0005] The purpose of the present disclosure is achieved by the following technical solutions:

[0006] A delay-off flash lamp indication circuit includes a delay circuit, a switch control circuit, and a flash lamp controller;

[0007] The delay circuit includes a delay switch, a first resistor, a third resistor, and a delay capacitor. The first end of the delay switch is used to connect to the positive electrode of the battery. The second end of the delay switch is connected to the first end of the first resistor. The second end of the first resistor is connected to the first end of the third resistor. The second end of the third resistor is grounded. The first end of the third resistor is connected to the first end of the delay capacitor. The second end of the delay capacitor is grounded.

[0008] The switch control circuit includes a first electronic switch tube, a second electronic switch tube, a third electronic switch tube, and a fourth resistor. The first end of the delay capacitor is connected to the control end of the first electronic switch tube. The second end of the delay switch is connected to the first end of the fourth resistor. The second end of the fourth resistor is connected to the first end of the first electronic switch tube. The second end of the first electronic switch tube is grounded. The second end of the delay switch is also connected to the first end of the third electronic switch tube. The control end of the third electronic switch tube is connected to the first end of the second electronic switch tube. The second end of the second electronic switch tube is grounded.

[0009] The flash input terminal of the flash controller is connected to the second end of the third electronic switch tube. The output terminal of the flash controller is used to be electrically connected to the LED lamp group.

[0010] In one embodiment, the model of the flash controller is NE555DT.

[0011] In one embodiment, the delay-off flash indication circuit further includes an eighth resistor and a ninth resistor. The second end of the third electronic switch tube is connected to the first end of the eighth resistor. The second end of the eighth resistor is connected to the first end of the ninth resistor. The second end of the ninth resistor is grounded. The first end of the eighth resistor is also connected to the reset terminal of the flash controller. The second end of the eighth resistor is also connected to the flash discharge terminal of the flash controller. The second end of the ninth resistor is also connected to the lamp flash voltage comparison terminal of the flash controller.

[0012] In one embodiment, the delay-off flash indication circuit further includes a tenth resistor. The second end of the eighth resistor is connected to the flash discharge terminal of the flash controller through the tenth resistor.

[0013] In one embodiment, the delay-off flash indication circuit further includes a second capacitor. The second end of the ninth resistor is grounded through the second capacitor.

[0014] In one embodiment, the delay-off flash indication circuit further includes a third capacitor. The flash output control terminal of the flash controller is grounded through the third capacitor.

[0015] In one embodiment, the delayed turn-off flashing light indicating circuit further includes a flashing light output diode. The output end of the flashing light controller is connected to the positive pole of the flashing light output diode, and the negative pole of the flashing light output diode is electrically connected to the LED light group.

[0016] In one embodiment, the switch control circuit further includes a fifth resistor. The second end of the delay switch is connected to the first end of the fifth resistor, and the second end of the fifth resistor is connected to the first end of the second electronic switch tube.

[0017] In one embodiment, the switch control circuit further includes a sixth resistor and a twelfth resistor. The control end of the third electronic switch tube is connected to the first end of the second electronic switch tube through the sixth resistor, and the second end of the second electronic switch tube is grounded through the twelfth resistor.

[0018] An energy storage device includes the delayed turn-off flashing light indicating circuit according to any one of the above.

[0019] Compared with the prior art, the present disclosure has at least the following advantages:

[0020] 1. In the above-mentioned delayed turn-off flashing light indicating circuit, when the delay switch is pressed, since the charging process of the delay capacitor delays the conduction time of the first electronic switch tube, the current passes through the second electronic switch tube and the third electronic switch tube, making the second electronic switch tube and the third electronic switch tube in the conducting state, and further causing the flashing light controller to control the LED light group to start flashing. During the charging process of the delay capacitor, when the voltage of the delay capacitor is greater than the threshold voltage of the control end of the first electronic switch tube, the first electronic switch tube is in the conducting state, resulting in the current not being able to pass through the second electronic switch tube and the third electronic switch tube, making the second electronic switch tube and the third electronic switch tube in the cut-off state, and further causing the flashing light controller to control the LED light group to stop flashing. During the process of the delayed turn-off of the LED light group working state, only the circuit composed of hardware is used to control the LED light group, avoiding the use of an MCU chip to control the flashing of the LED light group, thereby reducing the use cost of the delayed turn-off flashing light indicating circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present disclosure, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is a circuit diagram of the delayed turn-off flashing light indicating circuit of an embodiment.

[0023] Reference numerals: 10 - Delayed turn-off flashing light indicating circuit; 100 - Delay circuit; 200 - Switch control circuit; 300 - Flashing light controller; SW1 - Delay switch; R1 - First resistor; R2 - Second resistor; R3 - Third resistor; R4 - Fourth resistor; R5 - Fifth resistor; R6 - Sixth resistor; R8 - Eighth resistor; R9 - Ninth resistor; R10 - Tenth resistor; R12 - Twelfth resistor; C1 - Delay capacitor; C2 - Second capacitor; C3 - Third capacitor; M2 - First electronic switch tube; Q1 - Second electronic switch tube; M1 - Third electronic switch tube; VCC - Input terminal; RST - Reset terminal; OUT - Output terminal; DTS - Flashing light discharge terminal; TRI - Trigger terminal; THR - Threshold terminal; CON - Flashing light output control terminal; D1 - Flashing light output diode. Detailed implementation manners

[0024] To facilitate the understanding of the present disclosure, the present disclosure will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present disclosure are shown in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided so that the disclosure of the present disclosure can be understood more thoroughly and comprehensively.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present disclosure belongs. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0027] To better understand the technical solutions and beneficial effects of the present disclosure, the present disclosure will be further described in detail below with specific embodiments:

[0028] As Figure 1 shown, the utility model relates to a delayed turn-off flashing light indicating circuit 10, which includes a delay circuit 100, a switch control circuit 200 and a flashing light controller 300.

[0029] The delay circuit 100 includes a delay switch SW1, a first resistor R1, a third resistor R3, and a delay capacitor C1. The first end of the delay switch SW1 is used to connect to the positive pole of the battery. The second end of the delay switch SW1 is connected to the first end of the first resistor R1. The second end of the first resistor R1 is connected to the first end of the third resistor R3. The second end of the third resistor R3 is grounded. The first end of the third resistor R3 is connected to the first end of the delay capacitor C1. The second end of the delay capacitor C1 is grounded.

[0030] Further, the switch control circuit 200 includes a first electronic switch tube M2, a second electronic switch tube Q1, a third electronic switch tube M1, and a fourth resistor R4. The first end of the delay capacitor C1 is connected to the control end of the first electronic switch tube M2. The second end of the delay switch SW1 is connected to the first end of the fourth resistor R4. The second end of the fourth resistor R4 is connected to the first end of the first electronic switch tube M2. The second end of the first electronic switch tube M2 is grounded. The second end of the delay switch SW1 is also connected to the first end of the third electronic switch tube M1. The control end of the third electronic switch tube M1 is connected to the first end of the second electronic switch tube Q1. The second end of the second electronic switch tube Q1 is grounded.

[0031] Furthermore, the flash input terminal VCC of the flash controller 300 is connected to the second end of the third electronic switch tube M1. The output terminal OUT of the flash controller 300 is used to be electrically connected to the LED lamp group.

[0032] In this embodiment, the delay circuit 100 further includes a second resistor R2. The first resistor R1, the second resistor R2, and the third resistor R3 are connected in series with each other. The delay capacitor C1 is connected in parallel with the third resistor R3. Specifically, the first resistor R1, the second resistor R2, and the third resistor R3 form a voltage dividing circuit. Among them, the voltage applied across the third resistor R3 changes with the charging time of the delay capacitor C1, so as to adjust the voltage at the control end of the first electronic switch tube M2, and further adjust the delay on-off state of the first electronic switch tube M2.

[0033] Specifically, when the delay switch SW1 is pressed, current passes through the first resistor R1 and the second resistor R2, and then the current starts to charge the delay capacitor C1. During the charging process of the delay capacitor C1, the first end of the delay capacitor C1 is connected to the control end of the first electronic switch tube M2. At this time, since the voltage at the first end of the delay capacitor C1 is less than the threshold voltage of the control end of the first electronic switch tube M2, the first electronic switch tube M2 is in the cut-off state. At the same time, the current also passes through the fourth resistor R4 and the control end of the second electronic switch tube Q1, making the voltage at the control end of the second electronic switch tube Q1 greater than its conduction voltage, and further making the second electronic switch tube Q1 in the conduction state. Since the control end of the third electronic switch tube M1 is connected to the first end of the second electronic switch tube Q1, and the first end of the third electronic switch tube M1 is also connected to the second end of the delay switch SW1, when the second electronic switch tube Q1 is in the conduction state, the voltage at the first end of the third electronic switch tube M1 is greater than the threshold voltage of its control end, making the third electronic switch tube M1 in the conduction state. Since the input end of the flash controller 300 is connected to the second end of the third electronic switch tube M1, current flows into the input end of the flash controller 300 through the second end of the third electronic switch tube M1, making the flash controller 300 in the working state, and the LED lamp group starts to flash.

[0034] After the delay capacitor C1 is fully charged, that is, the voltage at the first end of the delay capacitor C1 is greater than the threshold voltage of the control end of the first electronic switch tube M2, making the first electronic switch tube M2 in the conduction state. The current flows through the fourth resistor R4 and then grounds through the first electronic switch tube M2, thereby making the voltage at the control end of the second electronic switch tube Q1 lower than its conduction voltage, and further causing the second electronic switch tube Q1 to be in the cut-off state. At this time, since the control end of the third electronic switch tube M1 is connected to the first end of the second electronic switch tube Q1, when the second electronic switch tube Q1 is in the cut-off state, the voltage at the first end of the third electronic switch tube M1 is less than the threshold voltage of its control end, making the third electronic switch tube M1 in the cut-off state. Since the input end of the flash controller 300 is connected to the second end of the third electronic switch tube M1, when the third electronic switch tube M1 is in the cut-off state, current cannot flow into the input end of the flash controller 300 through the second end of the third electronic switch tube M1, making the flash controller 300 in the off state, and thus making the LED lamp group stop flashing.

[0035] For the above-mentioned delayed turn-off flashing light indicating circuit 10, when the delay switch SW1 is pressed, since the charging process of the delay capacitor C1 delays the turn-on time of the first electronic switch tube M2, the current passes through the second electronic switch tube Q1 and the third electronic switch tube M1, causing the second electronic switch tube Q1 and the third electronic switch tube M1 to be in the on state, and further causing the flashing light controller 300 to control the LED lamp group to start flashing. During the charging process of the delay capacitor C1, when the voltage of the delay capacitor C1 is greater than the threshold voltage of the control terminal of the first electronic switch tube M2, the first electronic switch tube M2 is in the on state, resulting in the current being unable to pass through the second electronic switch tube Q1 and the third electronic switch tube M1, causing the second electronic switch tube Q1 and the third electronic switch tube M1 to be in the off state, and further causing the flashing light controller 300 to control the LED lamp group to stop flashing. During the process of the delayed turn-off working state of the LED lamp group, only the circuit composed of hardware is used to control the LED lamp group, avoiding the use of the MCU chip for the flashing control of the LED lamp group, thereby reducing the usage cost of the delayed turn-off flashing light indicating circuit.

[0036] In another embodiment, the first electronic switch tube M2 is an N-type MOS tube, the control terminal of the first electronic switch tube M2 is the gate of the N-type MOS tube, the first end of the first electronic switch tube is the drain of the N-type MOS tube, and the second end of the first electronic switch tube is the source of the N-type MOS tube; the second electronic switch tube Q1 is an NPN-type triode, the control terminal of the second electronic switch tube Q1 is the base of the NPN-type triode, the first end of the second electronic switch tube Q1 is the collector of the NPN-type triode, and the second end of the second electronic switch tube Q1 is the emitter of the NPN-type triode; the third electronic switch tube M1 is a P-type MOS tube, the control terminal of the third electronic switch tube M1 is the gate of the P-type MOS tube, the first end of the third electronic switch tube M1 is the source of the P-type MOS tube, and the second end of the third electronic switch tube M1 is the drain of the P-type MOS tube.

[0037] Such as Figure 1As shown, in one embodiment, the model of the flash controller 300 is NE555DT. In this embodiment, the input terminal VCC and the reset terminal RST of the NE555DT are both connected to the second terminal of the third electronic switch tube M1, and the output terminal OUT of the NE555DT is electrically connected to the LED lamp group. During the charging process of the delay capacitor C1, the third electronic switch tube M1 is in the conducting state, enabling current to flow into the input terminal VCC and the reset terminal RST of the NE555DT, thereby causing the NE555DT timer to be in the working state. Since the trigger terminal TRI and the threshold terminal THR of the NE555DT are both grounded through the same external capacitor, when the current flows through the external capacitor, the external capacitor starts to charge. When the voltage of the external capacitor is less than the trigger voltage of the trigger terminal TRI of the NE555DT, the output terminal OUT of the NE555DT outputs a high-level signal, and the LED lamp group is lit. When the voltage of the external capacitor is between the trigger voltage of the trigger terminal TRI and the threshold voltage of the threshold terminal THR, the LED lamp remains lit. When the voltage of the external capacitor is greater than the threshold voltage of the threshold terminal THR, the output terminal OUT of the flash controller 300 outputs a low-level signal, and the LED lamp group goes out. At this time, the discharge terminal DTS is grounded through the ground terminal GND of the NE555DT, and the external capacitor discharges through the discharge terminal DTS, causing the voltage of the external capacitor to drop. Due to the cyclic charging and discharging process of the external capacitor, the LED lamp group can be in a flashing state. Thus, the hardware circuit composed of resistors, capacitors, electronic switch tubes, and NE555DT can achieve the control of flashing and delayed shutdown of the LED lamp group, thereby reducing the usage cost of the delayed shutdown flash indication circuit.

[0038] As Figure 1As shown, in one embodiment, the delayed turn-off flashing indicator circuit 10 further includes an eighth resistor R8 and a ninth resistor R9. The second end of the third electronic switch tube M1 is connected to the first end of the eighth resistor R8. The second end of the eighth resistor R8 is connected to the first end of the ninth resistor R9. The second end of the ninth resistor R9 is grounded. The first end of the eighth resistor R8 is further connected to the reset terminal RST of the NE555DT. The second end of the eighth resistor R8 is further connected to the flashing discharge terminal DTS of the NE555DT. The second end of the ninth resistor R9 is further connected to the lamp flashing voltage comparison terminal of the NE555DT. In this embodiment, the eighth resistor R8 and the ninth resistor R9 are connected in series to form a voltage dividing circuit that provides a specified voltage for the flashing discharge terminal DTS of the NE555DT. When current passes through the eighth resistor R8 and the ninth resistor R9, the eighth resistor R8 limits the current flowing into the ninth resistor R9 to avoid excessive current on the ninth resistor R9 and ensure the normal operation of the ninth resistor R9. The ninth resistor R9 is connected in series between the flashing discharge terminal DTS of the NE555DT and the ground terminal GND. During the process of the flashing discharge terminal DTS discharging to the ground terminal GND, since the ninth resistor R9 limits the current of the flashing discharge terminal DTS, the discharging process of the NE555DT is delayed, thereby changing the frequency and duration of the signal output by the output terminal OUT of the NE555DT, and further controlling the flashing frequency and duration of the LED lamp group.

[0039] As Figure 1 shown, in one embodiment, the delayed turn-off flashing indicator circuit 10 further includes a tenth resistor R10. The second end of the eighth resistor R8 is connected to the flashing discharge terminal DTS of the NE555DT through the tenth resistor R10. In this embodiment, the tenth resistor R10 is respectively connected to the ninth resistor R9 and the flashing discharge terminal DTS of the NE555DT. The tenth resistor R10 is connected in series between the ninth resistor R9 and the flashing discharge terminal DTS of the NE555DT to form a voltage dividing circuit that provides a specified voltage for the flashing discharge terminal DTS of the NE555DT. During the process of the flashing discharge terminal DTS discharging to the ground terminal, the tenth resistor R10 limits the current of the flashing discharge terminal DTS of the NE555DT, thereby delaying the discharging process of the flashing discharge terminal DTS of the NE555DT.

[0040] As Figure 1As shown, in one embodiment, the delayed turn-off flash indication circuit 10 further includes a second capacitor C2, and the second terminal of the ninth resistor R9 is grounded through the second capacitor C2. In this embodiment, the second terminal of the ninth resistor R9 is connected to the first terminal of the second capacitor C2. Since the tenth resistor R10 is connected in series between the flash discharge terminal DTS of the NE555DT and the ninth resistor R9, the tenth resistor R10, the ninth resistor R9, and the second capacitor C2 are connected in series between the flash discharge terminal DTS of the NE555DT and the ground terminal GND in sequence, thus forming an RC series circuit; by adjusting the resistance values of the tenth resistor R10 and the ninth resistor R9 and the capacitance of the second capacitor C2, the frequency and duration of the signal output from the output terminal OUT of the NE555DT can be changed, and further the frequency and duration of the flashing of the LED lamp group can be controlled.

[0041] As Figure 1 shown, in one embodiment, the delayed turn-off flash indication circuit 10 further includes a third capacitor C3, and the flash output control terminal CON of the NE555DT is grounded through the third capacitor C3. In this embodiment, during the working state of the NE555DT, the flash output control terminal CON of the NE555DT charges the third capacitor C3. As the third capacitor C3 is charged, the voltage of the third capacitor C3 gradually rises until it reaches a stable state. Since the capacitor has the ability to store electrical energy, it can provide additional current when the circuit requires, thereby reducing voltage fluctuations, so that the third capacitor C3 can ensure that the threshold voltage of the NE555DT remains stable during the working process, thus improving the stability and reliability of the NE555DT; since the threshold voltage of the NE555DT will change with the change of the capacitance of the third capacitor C3 when the capacitance of the third capacitor C3 changes, the frequency of the signal output from the output terminal OUT of the NE555DT is changed, and further the frequency of the flashing of the LED lamp group is controlled.

[0042] As Figure 1 shown, in one embodiment, the delayed turn-off flash indication circuit 10 further includes a flash output diode D1. The output terminal OUT of the NE555DT is connected to the positive electrode of the flash output diode D1, and the negative electrode of the flash output diode D1 is electrically connected to the LED lamp group. In this embodiment, since the diode has unidirectional conductivity for current, the output terminal OUT of the NE555DT is connected to the positive electrode of the flash output diode D1, which can prevent the reverse current of the external circuit of the NE555DT from flowing back to the NE555DT chip, thereby protecting the chip from being damaged by the reverse current.

[0043] As Figure 1As shown, in one embodiment, the switch control circuit 200 further includes a fifth resistor R5. The second end of the delay switch SW1 is connected to the first end of the fifth resistor R5, and the second end of the fifth resistor R5 is connected to the first end of the second electronic switch tube Q1. In this embodiment, the fifth resistor R5 is connected to the first end of the second electronic switch tube Q1, such that the current flows through the fifth resistor R5 and then into the first end of the second electronic switch tube Q1. Since the fifth resistor R5 limits the current at the first end of the second electronic switch tube Q1, it avoids the situation where the current at the first end of the second electronic switch tube Q1 is too large, thereby ensuring the normal operation of the second electronic switch tube Q1.

[0044] As Figure 1 As shown, in one embodiment, the switch control circuit 200 further includes a sixth resistor R6 and a twelfth resistor R12. The control end of the third electronic switch tube M1 is connected to the first end of the second electronic switch tube Q1 through the sixth resistor R6, and the second end of the second electronic switch tube Q1 is grounded through the twelfth resistor R12. In this embodiment, the sixth resistor R6 is connected between the control end of the third electronic switch tube M1 and the first end of the second electronic switch tube Q1. When the current flows through the sixth resistor, the sixth resistor R6 limits the current at the control end of the third electronic switch tube M1, thereby avoiding the situation where the current at the control end of the third electronic switch tube M1 is too large and ensuring the normal operation of the third electronic switch tube M1. Since the two ends of the twelfth resistor R12 are respectively connected to the second end of the second electronic switch tube Q1 and the ground terminal GND, when the current flows through the twelfth resistor, the twelfth resistor R12 can limit the current at the second end of the second electronic switch tube Q1, thereby avoiding the problem of damage to the second electronic switch tube Q1 due to excessive current.

[0045] An energy storage device includes the delayed turn-off flashing indicator circuit 10 of any one of the above. In this embodiment, the delay circuit 100 further includes a second resistor R2. The first resistor R1, the second resistor R2, and the third resistor R3 are connected in series with each other. The delay capacitor C1 is connected in parallel with the third resistor R3. Specifically, the first resistor R1, the second resistor R2, and the third resistor R3 form a voltage dividing circuit. Among them, the voltage loaded on the third resistor R3 changes with the charging time of the delay capacitor C1, so as to adjust the voltage at the control end of the first electronic switch tube M2, and further adjust the delayed on-off state of the first electronic switch tube M2. Specifically, when the delay switch SW1 is pressed, the current passes through the first resistor R1 and the second resistor R2, and then the current starts to charge the delay capacitor C1. During the charging process of the delay capacitor C1, the first end of the delay capacitor C1 is connected to the control end of the first electronic switch tube M2. At this time, since the voltage at the first end of the delay capacitor C1 is less than the threshold voltage of the control end of the first electronic switch tube M2, the first electronic switch tube M2 is in the cut-off state; at the same time, the current also passes through the fourth resistor R4 and the control end of the second electronic switch tube Q1, so that the voltage at the control end of the second electronic switch tube Q1 is greater than its conduction voltage, and further the second electronic switch tube Q1 is in the conduction state; since the control end of the third electronic switch tube M1 is connected to the first end of the second electronic switch tube Q1, and the first end of the third electronic switch tube M1 is also connected to the second end of the delay switch SW1, when the second electronic switch tube Q1 is in the conduction state, the voltage at the first end of the third electronic switch tube M1 is greater than the threshold voltage of its control end, so that the third electronic switch tube M1 is in the conduction state. Since the input end of the flash controller 300 is connected to the second end of the third electronic switch tube M1, the current flows into the input end of the flash controller 300 through the second end of the third electronic switch tube M1, so that the flash controller 300 is in the working state, and the LED lamp group starts to flash. When the delay capacitor C1 is fully charged, that is, the voltage at the first end of the delay capacitor C1 is greater than the threshold voltage of the control end of the first electronic switch tube M2, the first electronic switch tube M2 is in the conduction state, and the current flows through the fourth resistor R4 and then grounds through the first electronic switch tube M2, so that the voltage at the control end of the second electronic switch tube Q1 is lower than its conduction voltage, and further the second electronic switch tube Q1 is in the cut-off state; at this time, since the control end of the third electronic switch tube M1 is connected to the first end of the second electronic switch tube Q1, when the second electronic switch tube Q1 is in the cut-off state, the voltage at the first end of the third electronic switch tube M1 is less than the threshold voltage of its control end, so that the third electronic switch tube M1 is in the cut-off state. Since the input end of the flash controller 300 is connected to the second end of the third electronic switch tube M1, when the third electronic switch tube M1 is in the cut-off state, the current cannot flow into the input end of the flash controller 300 through the second end of the third electronic switch tube M1, so that the flash controller 300 is in the off state, and thus the LED lamp group stops flashing.

[0046] Compared with the prior art, the present disclosure has at least the following advantages:

[0047] 1. For the above-mentioned delayed-turn-off flashing light indicating circuit 10, when the delay switch SW1 is pressed, since the charging process of the delay capacitor C1 delays the conduction time of the first electronic switch tube M2, the current passes through the second electronic switch tube Q1 and the third electronic switch tube M1, making the second electronic switch tube Q1 and the third electronic switch tube M1 in the conducting state, and further causing the NE555DT to control the LED light group to start flashing. During the charging process of the delay capacitor C1, when the voltage of the delay capacitor C1 is greater than the threshold voltage of the control end of the first electronic switch tube M2, the first electronic switch tube M2 is in the conducting state, resulting in the current being unable to pass through the second electronic switch tube Q1 and the third electronic switch tube M1, making the second electronic switch tube Q1 and the third electronic switch tube M1 in the cut-off state, and further causing the NE555DT to control the LED light group to stop flashing. During the process of the working state of the delayed-turn-off LED light group, only the circuit composed of hardware is used to control the LED light group, avoiding the use of an MCU chip to control the flashing of the LED light group, thereby reducing the usage cost of the delayed-turn-off flashing light indicating circuit.

[0048] The above embodiments only represent several implementation manners of the present disclosure, and their descriptions are relatively specific and detailed, but should not be construed as limiting the scope of the disclosed patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present disclosure, several modifications and improvements can still be made, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure patent shall be subject to the appended claims.

Claims

1. A delayed turn-off flashing light indication circuit, characterized in that, It includes a delay circuit, a switch control circuit and a flash controller; The delay circuit includes a delay switch, a first resistor, a third resistor and a delay capacitor. The first end of the delay switch is used to connect to the positive pole of the battery. The second end of the delay switch is connected to the first end of the first resistor. The second end of the first resistor is connected to the first end of the third resistor. The second end of the third resistor is grounded. The first end of the third resistor is connected to the first end of the delay capacitor. The second end of the delay capacitor is grounded; The switch control circuit includes a first electronic switch tube, a second electronic switch tube, a third electronic switch tube and a fourth resistor. The first end of the delay capacitor is connected to the control end of the first electronic switch tube. The second end of the delay switch is connected to the first end of the fourth resistor. The second end of the fourth resistor is connected to the first end of the first electronic switch tube. The second end of the first electronic switch tube is grounded. The second end of the delay switch is also connected to the first end of the third electronic switch tube. The control end of the third electronic switch tube is connected to the first end of the second electronic switch tube. The second end of the second electronic switch tube is grounded; The flash input end of the flash controller is connected to the second end of the third electronic switch tube. The output end of the flash controller is used to be electrically connected to an LED lamp group.

2. The delayed turn-off flashing light indicating circuit according to claim 1, wherein The model of the flash controller is NE555DT.

3. The delayed turn-off flashing light indicating circuit according to claim 1, wherein The delay-off flash indication circuit further includes an eighth resistor and a ninth resistor. The second end of the third electronic switch tube is connected to the first end of the eighth resistor. The second end of the eighth resistor is connected to the first end of the ninth resistor. The second end of the ninth resistor is grounded. The first end of the eighth resistor is also connected to the reset end of the flash controller. The second end of the eighth resistor is also connected to the flash discharge end of the flash controller. The second end of the ninth resistor is also connected to the lamp flash voltage comparison end of the flash controller.

4. The delayed turn-off flashing light indicating circuit according to claim 3, wherein The delay-off flash indication circuit further includes a tenth resistor. The second end of the eighth resistor is connected to the flash discharge end of the flash controller through the tenth resistor.

5. The delay-off flashing light indicating circuit according to claim 3, characterized in that, The delay-off flash indication circuit further includes a second capacitor. The second end of the ninth resistor is grounded through the second capacitor.

6. The delay-off flashing light indicating circuit according to claim 1, wherein The delay-off flash indication circuit further includes a third capacitor. The flash output control end of the flash controller is grounded through the third capacitor.

7. The delay-off flashing light indicating circuit according to claim 1, wherein The delay-off flash indication circuit further includes a flash output diode. The output end of the flash controller is connected to the positive pole of the flash output diode. The negative pole of the flash output diode is electrically connected to the LED lamp group.

8. The delayed turn-off flashing light indicating circuit according to claim 1, wherein The switch control circuit further includes a fifth resistor. The second end of the delay switch is connected to the first end of the fifth resistor. The second end of the fifth resistor is connected to the first end of the second electronic switch tube.

9. The delayed turn-off flashing light indicating circuit according to claim 1, wherein The switch control circuit further includes a sixth resistor and a twelfth resistor. The control end of the third electronic switch tube is connected to the first end of the second electronic switch tube through the sixth resistor. The second end of the second electronic switch tube is grounded through the twelfth resistor.

10. An energy storage device, characterized in that, Including the delayed turn-off flash indication circuit according to any one of claims 1 to 9.

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