CN210840148U

CN210840148U - Bypass circuit, circuit system and single live wire get electric switch

Info

Publication number: CN210840148U
Application number: CN201921709138.3U
Authority: CN
Inventors: 袁超; 李洋
Original assignee: Cooltouch China Intelligent Co ltd
Current assignee: Cooltouch China Intelligent Co ltd
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-06-23
Anticipated expiration: 2029-10-08

Abstract

The utility model provides a bypass circuit, circuit system and single fire get electric switch, this bypass circuit includes: a first alternating current input end of the rectifier bridge stack is connected with a first node after passing through a first resistor and a first capacitor which are connected in parallel, the first node is connected with a live wire, a second alternating current input end of the rectifier bridge stack is connected with a second node, and the second node is connected with a zero line; the relay is connected in series between the positive pole and the negative pole of the direct current output end of the rectifier bridge stack and comprises a gating switch, the gating switch comprises a second contact, a third contact and a first contact connected with the second node, when the relay is powered off, the first contact is conducted with the second contact, and when the relay is powered on, the first contact is conducted with the third contact; the third resistor is connected in series between the first node and the second contact; and the second resistor and the second capacitor are connected in series between the first node and the third contact. The utility model provides a bypass circuit's electric capacity both ends voltage height lead to the electric load mistake to start, guaranteed that single fire gets the electricity and can not cause the interference to the electric load.

Description

Bypass circuit, circuit system and single live wire get electric switch

Technical Field

The utility model relates to a circuit field, specifically speaking relates to bypass circuit, circuit system and single fire get electric switch.

Background

Domestic switch wiring all is a live wire, and the switch of intelligent house needs a line to supply power for it alone, just so needs two lines, and installation intelligent house just needs rewiring, and the house that decorates is good just can not install intelligent house, and some producers adopt single fire to get the electric technique in order to solve this difficult problem.

The difficulty of the single live wire electricity-taking technology is that when a lamp is turned off, a single live wire intelligent switch is connected with the lamp in series and then is connected into a power grid, so that the current flowing through the intelligent switch is the same as that of the lamp, the intelligent switch circuit cannot work due to small current, if the current is too large, the lamp can intermittently flash or red wires exist when an incandescent lamp is turned off, or the voltage at two ends of a capacitor is high, so that the LED lamp is started by mistake and the like. And the change of load type can also cause the change of current, thereby causing unstable work of a switch control circuit and the like, and causing unstable radio remote control distance due to single-fire power supply interference. The single-fire intelligent switch has more strict requirements on standby and working energy consumption due to the particularity of the working environment, so the research and development difficulty of the micro-power consumption single-fire standby and working power supply circuit is very large, and the single-fire intelligent switch is still the most main technical bottleneck limiting the development of single-fire wire (single-pole) intelligent products at home and abroad up to now.

The existing industry solution is to compress the function and reduce the power consumption as much as possible to deal with the problems of darkness and flicker, and as a result, the function is single and the communication mode and use are limited. Lamps with large starting current and voltage are intelligently used, and certain energy waste is caused.

In view of this, the utility model provides a bypass circuit, circuit system and single fire get electric switch.

SUMMERY OF THE UTILITY MODEL

To the problem among the prior art, the utility model aims to provide a bypass circuit, circuit system and single fire get electric switch, the electric capacity both ends voltage height that has solved bypass circuit leads to the electric load mistake to start, has guaranteed that single fire gets the electricity and can not cause the interference to the electric load to can use low-voltage relay of low cost, greatly reduced bypass circuit's overall cost.

An embodiment of the utility model provides a bypass circuit, include:

the first alternating current input end of the rectifier bridge stack is connected with a first node through a first resistor and a first capacitor which are connected in parallel, the first node is connected with a live wire, the second alternating current input end of the rectifier bridge stack is connected with a second node, and the second node is connected with a zero wire;

the relay is connected between the positive pole and the negative pole of the direct current output end of the rectifier bridge stack in series, the relay comprises a gating switch, the gating switch comprises a second contact, a third contact and a first contact connected with the second node, the first contact conducts the second contact when the relay is powered off, and the first contact conducts the third contact when the relay is powered on;

a third resistor connected in series between the first node and the second contact;

a second resistor and a second capacitor connected in series between the first node and the third contact.

Preferably, the resistance value of the third resistor ranges from 47 Ω to 470 Ω.

Preferably, the resistance value of the second resistor ranges from 4.7 Ω to 22 Ω.

Preferably, the fuse further comprises a fuse, a first end of the fuse is connected with the live wire, and a second end of the fuse is connected with the first node.

Preferably, the rated working current of the fuse is 1A, and the rated voltage of the fuse is 250V.

Preferably, the first capacitor is a resistance-capacitance voltage reduction capacitor, and the capacitance of the first capacitor ranges from 0.1uf to 0.33 uf.

Preferably, the capacitance of the second capacitor has a value in the range of 0.47uf to 2.2 uf.

Preferably, the relay is a 12V to 24V coil relay, and the contact withstand voltage of the first contact, the second contact and the third contact is greater than 250V.

An embodiment of the utility model provides a still provide a circuit system, include:

the first end of the switch is connected with the live wire;

at least one electrical load; and

a bypass circuit as described above, said bypass circuit being connected in parallel with said electrical load between said second terminal of said switch and the neutral line.

The embodiment of the utility model provides a single fire gets electric switch still provides, controls at least one electric load, include:

the first end of the switch is connected with the live wire, a wireless communication module is arranged in the switch, and the wireless communication module controls the switch to be switched on or switched off; and

the bypass circuit and the electric load are connected in parallel between the second end of the switch and the zero line, and when the switch is turned off, the wireless communication module is conducted with the zero line through the bypass circuit.

The utility model discloses a bypass circuit, circuit system and single fire get electric switch and solved bypass circuit's electric capacity both ends voltage height and lead to the electric load mistake to start, guaranteed that single fire gets the electricity and can not cause the interference to the electric load to can use low-voltage relay of low cost, greatly reduced bypass circuit's overall cost.

Drawings

Other features, objects and advantages of the invention will become more apparent from a reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.

Fig. 1 is a circuit diagram of a bypass circuit according to the present invention.

Fig. 2 is a circuit diagram of the circuit system of the present invention.

Fig. 3 is a circuit diagram of a modification of the circuit system of the present invention.

Fig. 4 is a circuit diagram of the single live wire power switch of the present invention.

Fig. 5 is a schematic circuit diagram of the bypass circuit in the single live wire power switch of the present invention in the light-off state.

Fig. 6 is a schematic circuit diagram of the bypass circuit in the single live wire power switch of the present invention in the initial state of lighting.

Fig. 7 is a schematic circuit diagram of the bypass circuit in the single live wire power switch of the present invention in the state of turning on the lamp and normally lighting.

Reference numerals

1 switch

11 wireless communication module

2-pass circuit

3 Lighting load

4 Lighting load

5 Lighting load

6 rectifier bridge stack

7 Relay

8 electric load

9 Mobile terminal

C1 first capacitor

C2 second capacitor

E1 first node

E2 second node

F1 fuse

R1 first resistor

R2 second resistor

R3 third resistor

L-shaped live wire

N zero line

S1 first contact

S2 second contact

S3 third contact

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.

Fig. 1 is a circuit diagram of a bypass circuit according to the present invention. As shown in fig. 1, the present invention provides a bypass circuit 2, including: fuse F1, rectifier bridge stack 6, relay 7, first capacitor C1, second capacitor C2, first resistor R1, second resistor R2 and third resistor R3. A first end of the fuse F1 is connected to the live line L. The first alternating current input end of the rectifier bridge stack 6 is connected with the second end (equal to the first node E1) of the fuse F1 after passing through a first resistor R1 and a first capacitor C1 which are connected in parallel, and the second alternating current input end of the rectifier bridge stack 6 is connected with a zero line N. The relay 7 is connected in series between the positive pole and the negative pole of the direct current output end of the rectifier bridge stack 6, the relay 7 comprises a gating switch, the gating switch comprises a second contact S2, a third contact S3 and a first contact S1 (which is equal to a second node E2) connected with a zero line N, when the relay 7 is powered off, the first contact S1 conducts the second contact S2, and when the relay 7 is powered on, the first contact S1 conducts the third contact S3. The third resistor R3 is connected in series between the second end of the fuse F1 and the second contact S2. A second resistor R2 and a second capacitor C2 connected in series between the second terminal of the fuse F1 and the third contact S3. The relay 7 in this embodiment is a resistance-capacitance step-down start, so that a low-voltage relay with low cost can be used.

The third resistor R3 may be a winding resistor with a resistance of 2W or more, which is related to the current, so that the voltage across the third resistor R3 is less than 10V.

In a preferred embodiment, the resistance of the third resistor R3 is in a range from 47 Ω to 470 Ω, but not limited thereto.

In a preferred embodiment, the resistance of the second resistor R2 is in a range from 4.7 Ω to 22 Ω, but not limited thereto. The second resistor R2 is used for limiting current of the second capacitor C2, has low resistance and can be a winding resistor or a cement resistor.

In a preferred embodiment, the rated working current of the fuse F1 is 1A, and the rated voltage of the fuse F1 is 250V, but not limited thereto.

In a preferred embodiment, the first capacitor C1 is a rc step-down capacitor, and the capacitance of the first capacitor C1 ranges from 0.1uf to 0.33uf, but not limited thereto. The capacitance of the first capacitor C1 is related to the working current, 1uF is required for measuring 200ma (220 v can be taken), and a polypropylene capacitor (CBB capacitor) or a safety capacitor is selected, but not limited to this. The safety capacitor in the embodiment refers to a safety capacitor which cannot cause electric shock and does not endanger personal safety after the capacitor fails.

In a preferred embodiment, the capacitance of the second capacitor C2 ranges from 0.47uf to 2.2uf, but not limited thereto. The second capacitor C2 is selected to be the minimum capacity that will enable the relay.

In a preferred embodiment, the relay 7 is a coil relay 7 with 12V to 24V, and the contact withstand voltage of the first contact S1, the second contact S2, and the third contact S3 is greater than 250V, but not limited thereto.

Referring to fig. 1, when the lamp is off, the relay 7 is a 220v high voltage relay, which is not activated. The current returns to the neutral line through a third resistor R3. After the resistance value of the third resistor R3 is calculated, the voltage drop between the two ends is low, and the problem that the LED lamp is started by mistake due to the fact that the voltage between the two ends of the capacitor of the bypass circuit is high is solved.

When the lamp is turned on, the relay 7 is started, the zero line is switched to a loop formed by the second resistor R2 and the second capacitor C2, at the moment, the working current of the intelligent switch flows through the second capacitor C2, the second resistor R2 is only a current-limiting resistor of the second capacitor C2, and the problem of heating after the third resistor R3 is started when the resistance value is too small is solved by capacitive reactance. The relay 7 in this embodiment is started by resistance-capacitance step-down, and needs a low-voltage relay with low cost, so that the effect of the relay can be realized.

Fig. 2 is a circuit diagram of the circuit system of the present invention. As shown in fig. 2, the present invention also provides a circuit system, including: a switch 1 connected with the live wire L, an electric load 8, a bypass circuit 2 and the electric load 8 are connected in parallel between the switch 1 and the zero line N. The utility model discloses the bypass circuit 2 that flows through is totally not had any requirement to the type and the power of power consumption load 8 to well switch 1's electric current, also can gain more electric energy on the single fire switch again, has cancelled the restriction to functional design, has improved product property ability index.

Fig. 3 is a circuit diagram of a modification of the circuit system of the present invention. As shown in fig. 3, the present invention also provides a circuit system, including: a switch 1 connected to the live line L, a plurality of lighting loads and a bypass circuit 2 as described above. The lighting load 5 is connected between the first opening of the switch 1 and the zero line N, the lighting load 3, the lighting load 4 and the like (or 3 lighting loads already installed) are respectively connected between other openings of the switch 1 and the zero line N, and the bypass circuit 2 and the lighting load 5 are connected in parallel between the switch 1 and the zero line N, so that the switch 1 is powered through the circuit of the bypass circuit 2 under the condition that the lighting loads 3, 4 and 5 do not work, and related technical features are as before and are not described herein again. On this basis, the technical scheme who changes the lighting load for other consumer or increase lighting load's quantity also falls within the scope of protection of the utility model.

Fig. 4 is a circuit diagram of the single live wire power switch of the present invention. As shown in fig. 4, the present invention further provides a circuit system for controlling at least one electric load 8, including: a switch 1 and a bypass circuit 2 as described above. The first end of switch 1 is connected live wire L, is equipped with a wireless communication module 11 in the switch 1, and wireless communication module 11 control switch 1 switches on or cuts off. The bypass circuit 2 and the electric load 8 are connected in parallel between the second end of the switch 1 and the zero line, and when the switch 1 is cut off, the wireless communication module 11 is conducted with the zero line N through the bypass circuit 2. The utility model discloses a bypass circuit 2 can guarantee that wireless communication module 11 obtains sufficient operating current, for example: 300 milliamperes, so that external equipment, such as a mobile terminal or a remote controller of a circuit system can perform information interaction with the wireless communication module to change the conducting state of the switch 1. The utility model discloses the whole bypass circuit 2 that flows through of well switch 1's electric current does not have any requirement to the type and the power of lamps and lanterns, also can gain more electric energy on the single fire switch again, has cancelled the restriction to functional design, has improved and has produced the property ability index.

Fig. 5 is a schematic circuit diagram of the bypass circuit in the single live wire power switch of the present invention in the light-off state. As shown in fig. 5, when the lamp is turned off, the relay 7 is not activated, the first contact S1 of the relay 7 is kept in conduction with the second contact S2, and the third contact S3 is disconnected from the second contact S2. The current returns to the zero line through first resistance R1 along the arrow trend in the figure, because the voltage drop is lower at first resistance R1 both ends, has solved the capacitor both ends voltage height of bypass circuit and has leaded to the LED lamp mistake and start. At this time, the wireless communication module 11 is conducted with the zero line N through the bypass circuit 2, so that the switch 1 can receive an external wireless control signal in real time through the wireless communication module 11.

Fig. 6 is a schematic circuit diagram of the bypass circuit in the single live wire power switch of the present invention in the initial state of lighting. As shown in fig. 6, when the switch 1 receives an external wireless control signal received in real time through the wireless communication module 11 and is turned on, the switch 1 is just turned on, and the current passes through the first resistor R1 and the first capacitor C1 in parallel along the arrow in the figure and reaches the bridge rectifier 6, and the bridge rectifier 6 provides direct current to the relay 7, so that the relay 7 is started, and the conduction relationship between the contacts is changed.

Fig. 7 is a schematic circuit diagram of the bypass circuit in the single live wire power switch of the present invention in the state of turning on the lamp and normally lighting. As shown in fig. 7, when the first contact S1 of the relay 7 is disconnected from the second contact S2, the third contact S3 is kept in conduction with the second contact S2. The zero line is switched to a loop formed by the second resistor R2 and the second capacitor C2, at this time, the working current of the intelligent switch flows through the second capacitor C2, and the second resistor R2 is only the current-limiting resistor of the second capacitor C2. The capacitive reactance is used for solving the problem of heating after the starting when the resistance value of the third resistor R3 is too small.

To sum up, the utility model discloses a bypass circuit, circuit system and single fire get electric switch and solved bypass circuit's electric capacity both ends voltage height and lead to the electric load mistake to start, guaranteed that single fire gets the electricity and can not cause the interference to the electric load to can use low-voltage relay of low cost, greatly reduced bypass circuit's overall cost.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. A bypass circuit, comprising:

2. The bypass circuit according to claim 1, wherein the third resistor has a resistance value ranging from 47 Ω to 470 Ω.

3. The bypass circuit according to claim 1, wherein the resistance of the second resistor has a value ranging from 4.7 Ω to 22 Ω.

4. The bypass circuit according to claim 1, further comprising a fuse having a first end connected to the live line and a second end connected to the first node.

5. The bypass circuit according to claim 4, wherein the fuse has a rated operating current of 1A and a rated voltage of 250V.

6. The bypass circuit according to claim 1, wherein the first capacitor is a rc (resistance-capacitance) step-down capacitor, and a capacitance of the first capacitor ranges from 0.1uf to 0.33 uf.

7. The bypass circuit according to claim 1, wherein the capacitance of the second capacitor has a value in a range of 0.47uf to 2.2 uf.

8. The bypass circuit according to claim 1, wherein the relay is a 12V to 24V coil relay, and the contact withstand voltage of the first contact, the second contact and the third contact is greater than 250V.

9. A circuit system, comprising:

the first end of the switch is connected with the live wire;

at least one electrical load; and

a bypass circuit as claimed in any one of claims 1 to 8, said bypass circuit being connected in parallel with said electrical load between said second terminal of said switch and neutral.

10. A single live wire power switch, characterized in that, controlling at least one electric load, comprises:

a bypass circuit as claimed in any one of claims 1 to 8, wherein said bypass circuit and said electrical load are connected in parallel between said second terminal of said switch and a neutral line, and when said switch is turned off, said wireless communication module is conducted to the neutral line through said bypass circuit.