CN218631878U

CN218631878U - Direct-current shunt release with self-protection circuit breaker

Info

Publication number: CN218631878U
Application number: CN202222717029.4U
Authority: CN
Inventors: 杨昊; 曹枫; 高辉; 刘云飞
Original assignee: Beijing Bevone Electric Co ltd
Current assignee: Beijing Bevone Electric Co ltd
Priority date: 2022-10-14
Filing date: 2022-10-14
Publication date: 2023-03-14
Anticipated expiration: 2032-10-14

Abstract

The utility model provides a take self-protection circuit breaker's direct current shunt release relates to shunt release technical field, has solved the voltage that the shunt release that exists among the prior art lets in and has not reached rated operating voltage 24V, and power is not enough to cause the tripping force not enough, the technical problem of unable normal control circuit breaker separating brake. The device comprises a microswitch, a circuit protection module, a power supply control module, a signal control module, an MOS (metal oxide semiconductor) tube and a coil, wherein the positive pole of the power supply, the microswitch, the circuit protection module, the power supply control module, the signal control module, the MOS tube and the negative pole of the power supply are sequentially connected in series, and the circuit protection module, the coil and the grid electrode of the MOS tube are sequentially and electrically connected.

Description

Direct-current shunt release with self-protection circuit breaker

Technical Field

The utility model belongs to the technical field of shunt release technique and specifically relates to a take direct current shunt release of self-protection circuit breaker is related to.

Background

With the development of the society and the progress of the low-voltage electric appliance field, the application position of the circuit breaker is wider and wider, wherein the shunt release is an important accessory of the circuit breaker. The shunt release is an accessory which converts electric energy into mechanical energy and can control the opening of the circuit breaker in a normal working state.

The rated operating voltage of original DC24V direct current shunt release is 24V, and when power and shunt release were far away, the electric energy had certain loss at the in-process of circulation, caused the voltage that the shunt release lets in not to reach rated operating voltage 24V, power is not enough to cause the tripping force not enough, unable normal control circuit breaker separating brake, the shunt release is switched on for a long time to lock simultaneously and is made wherein coil burn out, the unable normal use of shunt release.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take direct current shunt release of oneself's protection circuit breaker to the voltage that the shunt release that exists among the solution prior art lets in does not reach rated operating voltage 24V, and power is not enough to cause the tripping force not enough, the technical problem of unable normal control circuit breaker separating brake. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a pair of take self-protection circuit breaker's direct current shunt release, including micro-gap switch, circuit protection module, power control module, signal control module, MOS pipe and coil, wherein, the power anodal micro-gap switch circuit protection module power control module signal control module the MOS pipe with the negative pole of power is series connection in proper order, circuit protection module the coil with the grid of MOS pipe is connected electrically in proper order.

Optionally, the signal control module includes a clock oscillator, a first resistor, a second resistor, a first capacitor, and a second capacitor, an output end of the power control module is electrically connected to an input end of the clock oscillator, an output end of the clock oscillator is electrically connected to a drain of the MOS transistor, and the first resistor, the second resistor, the first capacitor, and the second capacitor are all connected in parallel to the clock oscillator.

Optionally, the power control module includes a voltage reduction element, a third capacitor and a fourth capacitor, an output end of the circuit protection module is electrically connected to an input end of the voltage reduction element, an output end of the voltage reduction element is electrically connected to an input end of the signal control module, and the third capacitor and the fourth capacitor are both connected in parallel to the voltage reduction element.

Optionally, the circuit protection module is a diode or a P-MOS transistor or a rectifier bridge.

Optionally, the MOS transistor is an N-channel MOS transistor.

Optionally, the coil further comprises a protection diode, the protection diode is connected in parallel to the MOS transistor and two ends of the coil, and a source electrode of the MOS transistor is electrically connected to an anode of the protection diode.

Optionally, the protection circuit further comprises a circuit board, and the circuit protection module, the power control module, the signal control module and the MOS transistor are all mounted on the circuit board.

Optionally, still including moving iron core, base and rotating hook, the coil housing is in move on the iron core, the coil the micro-gap switch with the circuit board is all installed on the base, the rotating hook with the base rotates to be connected, move the iron core with the rotating hook is connected, move the iron core and be connected through drive mechanism with the circuit breaker, micro-gap switch with the circuit breaker is connected through spring mechanism.

The utility model provides a pair of take self-protection circuit breaker's direct current shunt release, circuit protection module is used for the protection circuit, prevent that the maloperation from leading to circuit and coil to damage, after micro-gap switch is closed, power control module will accept the voltage that comes from the power, and simultaneously, this mains voltage is after power control module control, will export stable voltage to signal control module, and after signal control module received the voltage of stable voltage, the grid that will export the control signal control MOS pipe that has certain cycle and frequency switches on, make the coil electrified, the coil obtains behind the signal of telecommunication that has certain cycle and frequency, can periodic drive the movable iron core of shunt release and remove, make shunt release multiple operation under the not enough condition of power, thereby use the dropout circuit breaker, the event the utility model discloses can not reach under the 24V condition of rated operating voltage at voltage, through making the coil have the signal of certain cycle and frequency, thereby make movable iron core multiple operation, reach the effect of circuit breaker, the voltage that the shunt release that exists among the solution prior art lets in does not reach the rated operating voltage and does not reach 24V, the power is not enough, the normal control problem of the power of the shunt release can's that causes.

The utility model discloses preferred technical scheme can also produce following technological effect at least:

a. the circuit breaker is prevented from being opened when the direct-current shunt release is insufficient in power, so that the circuit breaker and a shunt release coil are prevented from being burnt out;

b. the self-protection function is provided, and the driving circuit and the coil can not be damaged under the condition that the power supply is reversely connected;

c. the operation process of the original direct-current shunt release is not changed, and the improvement cost is low;

d. the limit voltage value range of the direct current DC24V shunt release capable of working normally is enlarged, and the functional reliability of the original direct current shunt release is improved;

e. the control signal received by the coil has a certain period and frequency, so that the service life of the original direct-current shunt release is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a circuit diagram of a dc shunt release with a self-protection circuit breaker according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a dc shunt release with a self-protection circuit breaker according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of another side surface of a dc shunt release with a self-protection circuit breaker according to an embodiment of the present invention;

in the figure, 1, a microswitch; 2. a circuit protection module; 3. a power supply control module; 31. a voltage dropping element; 32. a third capacitor; 33. a fourth capacitor; 4. a signal control module; 41. a clock oscillator; 42. a first resistor; 43. a second resistor; 44. a first capacitor; 45. a second capacitor; 5. a MOS tube; 6. a coil; 7. a protection diode; 8. a circuit board; 9. a base; 10. the hook is rotated.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be noted that "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like are used in an orientation or positional relationship indicated based on the orientation or positional relationship shown in the drawings for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.

The utility model provides a take self-protection circuit breaker's direct current shunt release, including micro-gap switch 1, circuit protection module 2, power control module 3, signal control module 4, MOS pipe 5 and coil 6, wherein, the negative pole of the positive pole of power, micro-gap switch 1, circuit protection module 2, power control module 3, signal control module 4, MOS pipe 5 and power is series connection in proper order, and circuit protection module 2, coil 6 and MOS pipe 5's grid is connected electrically in proper order. The utility model provides a pair of take self-protection circuit breaker's direct current shunt release, circuit protection module 2 is used for the protection circuit, prevent that the maloperation from leading to circuit and coil 6 to damage, after micro-gap switch 1 is closed, power control module 3 will accept the voltage that comes from the power, and simultaneously, this mains voltage is after power control module 3 control, will export stable voltage to signal control module 4, and signal control module 4 receives behind the voltage of stable voltage, the grid that will export control signal control MOS pipe 5 that has certain cycle and frequency switches on, make coil 6 get the electricity, coil 6 gets behind the signal of telecommunication that has certain cycle and frequency, can the periodic movable iron core that drives the shunt release remove, make the shunt release not enough at power, work many times under the not enough condition of tripping force, thereby use the circuit breaker tripping, so the utility model discloses can not reach under the 24V's of rated operating voltage under the condition of 24V of rated operating voltage, through making coil 6 have the signal of telecommunication of certain cycle and frequency, thereby make the work of iron core work many times circuit breaker, the effect of current tripping has been solved, the shunt voltage that the existing technology has reached the normal tripping voltage and has not enough, the normal control of the tripping technology that the tripping voltage does not cause the rated operating voltage to cause.

As an alternative embodiment, the signal control module 4 includes a clock oscillator 41, a first resistor 42, a second resistor 43, a first capacitor 44, and a second capacitor 45, the output terminal of the power control module 3 is electrically connected to the input terminal of the clock oscillator 41, the output terminal of the clock oscillator 41 is electrically connected to the drain of the MOS transistor 5, and the first resistor 42, the second resistor 43, the first capacitor 44, and the second capacitor 45 are all connected in parallel to the clock oscillator 41. The first resistor 42 and the second resistor 43 are voltage dividing resistors, the first capacitor 44 and the second capacitor 45 can be charged and discharged continuously after power is supplied, wherein the clock oscillator 41 can output a square wave control signal with a certain period and frequency to the gate of the MOS transistor 5 according to parameters set by a peripheral circuit consisting of the first resistor 42, the second resistor 43, the first capacitor 44 and the second capacitor 45. When the grid of the MOS tube 5 is conducted, the coil 6 is electrified, and the coil 6 can obtain an electric signal with a certain period and frequency.

As an alternative embodiment, the power control module 3 includes a voltage-reducing element 31, a third capacitor 32, and a fourth capacitor 33, an output terminal of the circuit protection module 2 is electrically connected to an input terminal of the voltage-reducing element 31, an output terminal of the voltage-reducing element 31 is electrically connected to an input terminal of the signal control module 4, and both the third capacitor 32 and the fourth capacitor 33 are connected to the voltage-reducing element 31 in parallel. The voltage dropping element 31 can drop the input DC24V voltage to a stable DC12V. The third capacitor 32 is used for counteracting the inductance effect of the line to prevent self-oscillation, the voltage reduction element 31 is used for reducing voltage, and the fourth capacitor 33 is used for filtering high-frequency signals of power signals after voltage reduction to improve the transient response of the circuit.

As an alternative embodiment, the circuit protection module 2 is a diode or a P-MOS transistor or a rectifier bridge. The circuit protection module 2 has the advantages that the circuit is not burnt out by mistakenly connecting the positive electrode and the negative electrode of the direct-current power supply, and the operation and the use are more convenient. The circuit protection module 2 can use a diode, and the unidirectional conductive characteristic of the diode is utilized to cut off the reverse voltage and protect the circuit; a P-MOS tube can be used, and due to a parasitic diode in the P-MOS tube, when a power supply is reversely connected, a grid G is at a high level, the P-MOS tube is not conducted, the circuit does not work, and the effect of protecting the circuit is achieved; the rectifier bridge can be used, only two of the diodes work under different polarities by utilizing the rectifier bridge, and the other two diodes are in a cut-off state, so that the non-polar connection of a power supply is realized, namely, the positive and negative connection can be realized, and the effect of protecting a circuit is achieved.

As an alternative embodiment, the MOS transistor 5 may be an N-channel MOS transistor.

As an optional embodiment, the protection device further comprises a protection diode 7, the protection diode 7 is connected in parallel at two ends of the MOS transistor 5 and the coil 6, and the source of the MOS transistor 5 is electrically connected with the anode of the protection diode 7. The protection diode 7 may prevent inductance.

As an optional implementation mode, the circuit protection module further comprises a circuit board 8, and the circuit protection module 2, the power control module 3, the signal control module 4 and the MOS transistor 5 are all mounted on the circuit board 8. Still including moving iron core, base 9 and rotating

hook

10, 6 covers of coil are on moving the iron core, and coil 6, micro-gap switch 1 and circuit board 8 are all installed on base 9, and rotating hook 10 rotates with base 9 to be connected, moves the iron core and is connected with rotating hook 10, moves the iron core and is connected through drive mechanism with the circuit breaker, and micro-gap switch 1 is connected through spring mechanism with the circuit breaker. The on/off state of the microswitch 1 and the on/off state of the circuit breaker are synchronized.

When the micro switch 1 is closed, after the coil 6 obtains an electric signal with a certain period and frequency, the action of the rotating hook 10 is periodically controlled by attracting the movable iron core, and the movement of the rotating hook 10 can pull the transmission mechanism to realize the opening of the circuit breaker; and after the circuit breaker is opened, the spring mechanism can be pulled, so that the microswitch 1 is disconnected, the direct-current shunt release is powered off, the coil 6 is prevented from being burnt out due to locking caused by long-time electrification, meanwhile, the coil 6 is powered off, the movable iron core can control the rotating hook 10 to return to the original position, and then the transmission mechanism can be pulled by the movement of the rotating hook 10 to realize circuit breaker closing. The connected power supply can keep the original function of controlling the breaker to open the brake through the DC24V direct current shunt release from 14V to 24V, and the functional reliability of the original direct current shunt release is improved.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A direct current shunt release with a self-protection circuit breaker is characterized by comprising a microswitch (1), a circuit protection module (2), a power supply control module (3), a signal control module (4), an MOS (metal oxide semiconductor) tube (5) and a coil (6),

the positive pole of power microswitch (1), circuit protection module (2), power control module (3), signal control module (4) MOS pipe (5) with the negative pole of power is series connection in proper order, circuit protection module (2) coil (6) with the grid of MOS pipe (5) is the electricity connection in proper order.

2. The direct current shunt trip with the self-protection circuit breaker according to claim 1, wherein the signal control module (4) comprises a clock oscillator (41), a first resistor (42), a second resistor (43), a first capacitor (44) and a second capacitor (45), the output end of the power control module (3) is electrically connected with the input end of the clock oscillator (41), the output end of the clock oscillator (41) is electrically connected with the drain electrode of the MOS transistor (5), and the first resistor (42), the second resistor (43), the first capacitor (44) and the second capacitor (45) are all connected in parallel on the clock oscillator (41).

3. The direct-current shunt tripping device with the self-protection circuit breaker according to claim 1, wherein the power control module (3) comprises a voltage reduction element (31), a third capacitor (32) and a fourth capacitor (33), the output end of the circuit protection module (2) is electrically connected with the input end of the voltage reduction element (31), the output end of the voltage reduction element (31) is electrically connected with the input end of the signal control module (4), and the third capacitor (32) and the fourth capacitor (33) are both connected in parallel on the voltage reduction element (31).

4. The direct-current shunt release with the self-protection circuit breaker according to claim 1, wherein the circuit protection module (2) is a diode or a P-MOS transistor or a rectifier bridge.

5. The direct-current shunt release with the self-protection circuit breaker according to claim 1, wherein the MOS transistor (5) is an N-channel MOS transistor.

6. The direct-current shunt release with the self-protection circuit breaker according to claim 1, further comprising a protection diode (7), wherein the protection diode (7) is connected in parallel to the two ends of the MOS transistor (5) and the coil (6), and a source of the MOS transistor (5) is electrically connected to an anode of the protection diode (7).

7. The direct-current shunt release with the self-protection circuit breaker according to claim 1, further comprising a circuit board (8), wherein the circuit protection module (2), the power control module (3), the signal control module (4) and the MOS transistor (5) are all mounted on the circuit board (8).

8. The direct-current shunt release with the self-protection circuit breaker according to claim 7, further comprising a movable iron core, a base (9) and a rotating hook (10), wherein the coil (6) is sleeved on the movable iron core, the coil (6), the micro switch (1) and the circuit board (8) are all mounted on the base (9), the rotating hook (10) is rotatably connected with the base (9), the movable iron core is connected with the rotating hook (10), the movable iron core is connected with the circuit breaker through a transmission mechanism, and the micro switch (1) is connected with the circuit breaker through a spring mechanism.