CN203553886U - Short-circuit-resistant self-resetting circuit breaker - Google Patents

Abstract

The utility model relates to a short-circuit-resistant self-resetting circuit breaker which includes a signal acquiring one-chip microcomputer U3, a motion processing one-chip microcomputer U2, a display module and a power module. The signal acquiring one-chip microcomputer U3 is connected with an output end of the power module. The motion processing one-chip microcomputer U2 is connected with an input end of the power module. A power detecting end of the power module is connected with a transformer. An AC-DC conversion module is arranged between the transformer and the signal acquiring one-chip microcomputer U3 and the motion processing one-chip microcomputer U2. The transformer is connected directly with an AC power supply. The power module includes at least three groups of MOS pipes, which are connected in parallel. Each group of MOS pipes includes a plurality of serially connected MOS pipes. The circuit breaker adopts an electronic circuit break technology, and high-precision current sensor detection and an intelligent program are added so that when the circuit becomes a short circuit, a power supply can be rapidly cut off and spark-free protection does not cause fire disasters. When the circuit is normal, normal power supplying is restored. The circuit breaker has a low-power-consumption characteristic and thus is applicable to different occasions.

Description

Short Circuit withstand self-replaced type electronic circuit breaker

Technical field

The utility model relates to a kind of circuit breaker, relate in particular to a kind of can automatic short-circuit when short circuit, and can automatically reset electronic circuit breaker after short trouble is got rid of.

Background technology

According to statistics, domestic every year because fire causes damage hundreds of millions ofly, casualties is also very serious, and wherein because catching fire of causing of electricity consumption is large a kind of of many, the wide harm of quantity in various fire, the national electrical fire generating capacity having accounts for first of fire.China is generate output increase over nearly 20 years, the corresponding growth of energy output and power consumption has facilitated a large amount of application of low-voltage electrical apparatus to cause the quantity of electrical fire to increase, add a large amount of appearance of urban skyscraper, the air conditioner that in building, power consumption is large is used, electric weight supply terminals load is heavy, concentrate, and adds that part is defective, the many factors such as use of fake and forged low-voltage electrical apparatus impel in electrical fire generation sum and increase at most.Especially the accident such as self-burning of vehicle, coal mine gas from explosion, gas piping blast is almost all caused by line short.According to incompletely statistics, domestic have 1500 many enterprises all producing circuit breaker.Circuit breaker every household all will be used, and the person affecting the livelihood of every family and property safety, is the first line of defence that ensures family's electrical safety.

Traditional Selection of Circuit Breakers be copper sheet and binding post, copper part is the part of circuit breaker key.And should the arrange in pairs or groups circuit breaker of different special protection of different places, such as often having water and oil smoke in kitchen and toilet, have child's family, in order to prevent that children from disclosing socket eyelet etc. with finger touch or by metal object.Short circuit accident during circuit is used is the accident that people fight off and can not definitely avoid, particularly because aging circuit, misoperation, toy enter, the reason such as external force and user responsibility causes the possibility of short circuit accident very big.In conjunction with the current poor situation of circuit anti-external short circuit intensity in service, for the automatic reclosing after system short-circuit tripping operation or put into operation by force, should see its disadvantageous factor, otherwise the damaged condition of aggravation operation circuit sometimes even loses the possibility of again repairing.Conventionally operation circuit is after being impacted by short-circuit current, and local deformation will occur circuit, even without damaging immediately, also likely leaves serious potential faults.First, insulation distance will change, and solid insulation sustains damage, and cause partial discharge to occur.When running into lightning overvoltage, do the used time and just likely cause sudden insulation fault, even under normal working voltage, because the long term of partial discharge also may cause dielectric breakdown accident.Secondly, when again suffering short circuit accident, by bearing, do not live huge electrodynamic action and breaking out of fire accident.

Summary of the invention

The purpose of this utility model is to propose a kind of when short circuit, energy fast shut-off power supply, and nonarcing protection, can not cause fire, when circuit is normal, recovers again normal power supply, the Short Circuit withstand self-replaced type electronic circuit breaker of low-power consumption characteristic.

The purpose of this utility model is achieved in that Short Circuit withstand self-replaced type electronic circuit breaker, and it comprises signals collecting single-chip microcomputer U3, action processing single chip U2, and display module and power model.Signals collecting single-chip microcomputer U3 is connected with power model output, action processing single chip U2 is connected with power model input, the power supply test side of power model is connected with transformer, transformer and signals collecting single-chip microcomputer U3, between action processing single chip U2, AC-DC conversion module is set, transformer is directly connected with AC power.Power model is comprised of at least three group metal-oxide-semiconductor groups, and each organizes between metal-oxide-semiconductor group in parallel, and every group of metal-oxide-semiconductor group is comprised of the metal-oxide-semiconductor of a plurality of series connection.

Owing to implementing technique scheme; the utility model adopts electronic broken circuit technology, has increased high precision electric current transducer detection, intelligent program; when short circuit; energy fast shut-off power supply, nonarcing protection, can not cause fire; when circuit is normal; recover again normal power supply, low-power consumption characteristic, is applicable to various occasions.

Accompanying drawing explanation: concrete structure of the present utility model is provided by following drawings and Examples:

Fig. 1 is Short Circuit withstand self-replaced type electronic circuit breaker circuit diagram.

Legend: 1, AC power, 2, display module; 3, power model; 4, AC-DC conversion module.

Embodiment:

The utility model is not subject to the restriction of following embodiment, can determine concrete execution mode according to the technical solution of the utility model and actual conditions.

Embodiment :as shown in Figure 1, it comprises signals collecting single-chip microcomputer U3 Short Circuit withstand self-replaced type electronic circuit breaker, action processing single chip U2, and display module 2 and power model 3.Signals collecting single-chip microcomputer U3 is connected with power model 3 outputs, action processing single chip U2 is connected with power model 3 inputs, the power supply test side of power model 3 is connected with transformer, transformer and signals collecting single-chip microcomputer U3, between action processing single chip U2, AC-DC conversion module is set, transformer is directly connected with AC power 1.Power model 3 is comprised of at least three group metal-oxide-semiconductor groups, and each organizes between metal-oxide-semiconductor group in parallel, and every group of metal-oxide-semiconductor group is comprised of the metal-oxide-semiconductor of a plurality of series connection.In action, processing single chip U2 place is connected with display module 2.Described metal-oxide-semiconductor is prior art, and its full name is MOSFET metal oxide film insulating gate type field effect tube.

During use, by power model 3, detect AC power, increase electric current, replace traditional electric shock pattern, power model 3 by the transfer of data collecting to signals collecting single-chip microcomputer U3, the program being preset in signals collecting single-chip microcomputer U3 is passed through after analysis, to action processing single chip U2 transmitted signal, action processing single chip U2 receives after signal, signals collecting single-chip microcomputer U3 image data is carried out to variable through computing, according to pre-set programs, power model 3 is controlled accordingly and opened circuit, recovers action.Current state is shown and showed with the LED in display module 2 simultaneously.

Above technical characterictic has formed most preferred embodiment of the present utility model, and it has stronger adaptability and best implementation result, can increase and decrease according to actual needs inessential technical characterictic, meets the needs of different situations.

Claims (2)

1. a Short Circuit withstand self-replaced type electronic circuit breaker, it is characterized in that: it comprises signals collecting single-chip microcomputer U3, action processing single chip U2, and display module and power model, signals collecting single-chip microcomputer U3 is connected with power model output, action processing single chip U2 is connected with power model input, the power supply test side of power model is connected with transformer, transformer and signals collecting single-chip microcomputer U3, between action processing single chip U2, AC-DC conversion module is set, transformer is directly connected with AC power.

2. Short Circuit withstand self-replaced type electronic circuit breaker as claimed in claim 1, is characterized in that: power model is comprised of at least three group metal-oxide-semiconductor groups, and each organizes between metal-oxide-semiconductor group in parallel, and every group of metal-oxide-semiconductor group is comprised of the metal-oxide-semiconductor of a plurality of series connection.