CN2909687Y - Power supply converter of multifunction DC low tension electric blanket - Google Patents

Power supply converter of multifunction DC low tension electric blanket Download PDF

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Publication number
CN2909687Y
CN2909687Y CN 200620058419 CN200620058419U CN2909687Y CN 2909687 Y CN2909687 Y CN 2909687Y CN 200620058419 CN200620058419 CN 200620058419 CN 200620058419 U CN200620058419 U CN 200620058419U CN 2909687 Y CN2909687 Y CN 2909687Y
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China
Prior art keywords
voltage
circuit
controller
transformer
power supply
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Expired - Fee Related
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CN 200620058419
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Chinese (zh)
Inventor
李和发
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Dongguan Warmlecom Electric Blanket Co., Ltd.
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李和发
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Abstract

The utility model relates to a multi-functional electrical power converter of low-voltage DC electric blanket, consisting of a rectifier filter circuit, a clamping circuit, a transformer, an under-voltage circuit, an over-voltage protective circuit, an IC controller, a low-voltage rectifier filter circuit, a frequency adjustment circuit. The power converter forces the transformer to work skillfully through IC controller. And the utility model also is equipped with rectifier, filter procedure for all the current voltage provided for IC controller and transformer after AC power supply integrating DC power supply, provided for the load of electric blanket after transition by transformer. At the same time, the over-negative protective circuit is connected with the controller, reaching the efficacy of IC controller controlling the cycle working loop of transformer, so that can effectively provide the electric blanket load with stable low current voltage to ensure the safety of people using and reduce the incidence rate of failure. Especially in the circumstances of under-voltage or over-voltage, the utility model can effective protect IC controller to improve product quality. The utility model structure is simple, has a strong practicability and multi-functional efficacy.

Description

The power supply changeover device of multi-functional dc low-voltage electric blanket
Technical field
The utility model relates to the electric blanket technical field, is meant a kind of power supply changeover device of multi-functional dc low-voltage electric blanket especially.
Background technology
The electric blanket product has become the important partner of people's warming in winter.Yet, tradition electric blanket great majority are to realize by domestic lighting voltage, provide corresponding power supply by high voltage source in other words conj.or perhaps, 220V voltage for example, yet, the electric blanket of making power supply with high-tension electricity in use usually leaks electricity, phenomenon on fire, thereby personal life security is produced very big harmfulness; Be on the point of numerous generation in view of accident, avoid electric people and cause the generation of accidents such as fire, particularly for old man, child and the person of can't take care of oneself, with safety low-voltage direct electric heating blanket replace dangerous high pressure electric blanket major issue become.
At present, disclose 36 volts of electric blankets of a kind of low pressure at Chinese patent notification number CN2301826Y, wherein, comprised mains switch, thermosistor, power end by circuit is provided with 36 volts of isolating transformers, and the secondary winding of these 36 volts of isolating transformers is connected to behind the thermosistor and downlink connection multiply heating wire constitutes; This technical scheme only realizes simple voltage transitions with 36 volts of isolating transformers, do not take electric current, clutter etc. is integrated effectively, the defective that can have the current/voltage instability in the use, in case particularly under the situation of over-voltage and over-current, can't operate as normal, thus can cause phenomenon of the failure to take place; Therefore the low-voltage electroheating blanket that utilizes aforesaid way to provide not only causes puzzlement in use to people, and situation such as more seriously can cause danger equally is unfavorable for market competition.
The utility model content
The utility model is at above-mentioned the deficiencies in the prior art; main purpose is to provide the power supply changeover device of multi-functional dc low-voltage electric blanket; it can offer the stable low current voltage of electric blanket load effectively; guarantee the fail safe that people use; reduce rate of breakdown; particularly under the situation of under-voltage, overvoltage, can protect the IC controller effectively, thereby improve the quality of products.
For realizing above-mentioned purpose, the utility model is taked following technical scheme:
A kind of power supply changeover device of dc low-voltage electric blanket, it comprises a current rectifying and wave filtering circuit, one clamp circuit, one transformer, one is under-voltage, overvoltage crowbar, one IC controller, one lower pressure rectifier filter circuit, one frequency regulating circuit, described current rectifying and wave filtering circuit carries out filtering again after AC power being converted to DC power supply, one end and clamp circuit, transformer connects, this clamp circuit is connected with transformer, in order to absorb special-shaped ripple or the peak value ripple that transformer produces, the other end is carried under-voltage, overvoltage crowbar, this is under-voltage, overvoltage crowbar connects the IC controller, by under-voltage, overvoltage crowbar detects the voltage after the AC rectification filter, and IC controller and transformer connect, by IC controller driving transformer, described transformer output is connected with the lower pressure rectifier filter circuit, and this lower pressure rectifier filter circuit is in order to offer electric blanket with Dc low voltage power supply; Described frequency regulating circuit is stablized the output voltage and the frequency of IC controller, it comprises the IC optical coupling that feedback current rectifying and wave filtering circuit, electric current and voltage are adjusted circuit and be connected with feedback current rectifying and wave filtering circuit, electric current and voltage adjustment circuit, described feedback current rectifying and wave filtering circuit is connected with transformer, IC controller, and electric current and voltage is adjusted circuit and is connected with the lower pressure rectifier filter circuit.
The utility model preferred version is as follows:
Described current rectifying and wave filtering circuit be provided with a buffering ac filter circuit between AC power is connected, voltage is to the impact of circuit when extenuating firm starting.
Connect an IC controller current foldback circuit on the described IC controller, avoid under overcurrent condition, can giving equally the IC controller that protection is provided.
The utility model compared with prior art, its beneficial effect is by the driving transformer work dexterously of IC controller, and the current/voltage that offers before the current/voltage of IC controller and transformer after AC power is integrated DC power supply and offer the electric blanket load after the transformer conversion all has the rectification of carrying out, filter, be connected with the IC controller by crossing negative protective circuit simultaneously, reach the effect in IC controller control transformer periodic duty loop, offer the stable low current voltage of electric blanket load effectively, guarantee the fail safe that people use, reduce rate of breakdown; Particularly under the situation of under-voltage, overvoltage, can protect the IC controller effectively, thereby improve the quality of products; The effect that the utility model is simple in structure, practical and tool is multi-functional.
Description of drawings
Fig. 1 is the utility model circuit frame principle figure;
Fig. 2 is Fig. 1 particular circuit configurations schematic diagram;
Fig. 3 is that the utility model is used for application examples schematic diagram on the electric blanket;
The drawing reference numeral explanation:
10, buffering ac filter circuit 20, current rectifying and wave filtering circuit 30, clamp circuit 40, transformer 50, IC controller 51, the IC controller is under-voltage, overvoltage crowbar 52, IC controller current foldback circuit 60, lower pressure rectifier filter circuit 70, frequency regulating circuit 71, feedback current rectifying and wave filtering circuit 72, electric current and voltage are adjusted circuit 73, IC optical coupling 80, load 100, power supply changeover device 200, lead 300, pad 400, heater element
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
See also shown in Figure 1, a kind of power supply changeover device 100 of dc low-voltage electric blanket, it comprises a buffering ac filter circuit 10, one current rectifying and wave filtering circuit 20, one clamp circuit 30, one transformer 40, one IC controller 50, one lower pressure rectifier filter circuit 60, one frequency regulating circuit 70, described current rectifying and wave filtering circuit 20 carries out filtering again after AC power being converted to DC power supply, one end and clamp circuit 30, transformer 40 connects, this clamp circuit 30 is connected with transformer 40, in order to absorb special-shaped ripple or the peak value ripple that transformer produces, the other end is delivered to under-voltage, overvoltage crowbar 51, this is under-voltage, overvoltage crowbar 51 connects IC controller 50, by under-voltage, overvoltage crowbar 51 detects the voltage after the AC rectification filter, to avoid under-voltage, protection is provided under the overpressure situation IC controller 50; And IC controller 50, with IC controller 50 and transformer 40 conductings, by IC controller 50 driving transformers 40, described transformer 40 outputs are connected with lower pressure rectifier filter circuit 60, and this lower pressure rectifier filter circuit 60 is in order to offer Dc low voltage power supply electric blanket load 80; Described frequency regulating circuit 70 is stablized the output voltage and the frequency of IC controller 50, it comprises the IC optical coupling 73 that feedback current rectifying and wave filtering circuit 71, electric current and voltage are adjusted circuit 72 and be connected with feedback current rectifying and wave filtering circuit 71, electric current and voltage adjustment circuit 72, described feedback current rectifying and wave filtering circuit 51 is connected with transformer 40, IC controller 50, and electric current and voltage is adjusted circuit 52 and is connected with lower pressure rectifier filter circuit 60; And on IC controller 50, connect an IC controller current foldback circuit 52, so can avoid under overcurrent condition, giving IC controller 50 that protection is provided.
In conjunction with as shown in Figure 2, be the utility model particular circuit configurations schematic diagram again; Described current rectifying and wave filtering circuit is reached and is connect the capacitor C 2 of this rectifier cell D1-D4 and forms by rectifier cell D1-D4, described clamp circuit comprise the rectifier cell D5 that connects with the IC controller and with current rectifying and wave filtering circuit connect mutually and the capacitor C 3 that connects, resistance R 1, transformer comprises primary coil TL1, secondary coil TL2 and feedback coil TL3, and primary coil TL1 and clamp circuit are mutually and connect capacitor C 3, resistance R 1 and rectifier cell D5 end and be connected; Described lower pressure rectifier filter circuit by and meet rectifier cell D7 and capacitor C 6 is formed, secondary coil TL2 and rectifier cell D7 and capacitor C 6 connect; Described feedback current rectifying and wave filtering circuit is provided with by rectifier cell D6 and capacitor C 5 series connection; its rectifier cell D6, capacitor C 5 connect with feedback coil BL3; described under-voltage, cross guarantor's protective circuit and form by resistance R 8; wherein resistance R 8 one ends are connected with IC controller L pin, and the other end is connected with rectification filter circuit output end.
The foregoing circuit operation principle is that alternating current is through fuse FUSE and thermistor RT, the rectifier cell D1-D4 that enters current rectifying and wave filtering circuit 20 carries out rectification, pulse direct current after the rectification forms direct voltage stably after capacitor C 2 filtering, wherein positive pole is input to transformer TL1 and under-voltage, the resistance R 8 of overvoltage crowbar, by the voltage behind the resistance R 8 elder generations detection rectifying and wave-filtering, under normal situation, promptly start the IC controller, D pin output voltage by the IC controller comes driving transformer, if it is under-voltage, the D pin of IC controller does not have voltage output under the situation of overvoltage, thereby reaches the effect of protection IC controller; The C pin of described IC controller is a control pin, and it is by output frequency and the voltage of frequency regulating circuit 70 conductings with control IC 1; When transformer 40 work, secondary coil TL2 and feedback coil TL3 produce voltage simultaneously, and secondary coil TL2 is the output winding, and electric current and voltage drives load behind the rectifier cell D7 of lower pressure rectifier filter circuit 60 and capacitor C 6 rectifying and wave-filterings; The C foot control system circuit of being made of the IC controller simultaneously capacitor C 5, C7, C4, C8 and resistance R 2, R3, R4, R5, R6, R7, IC3 and IC optical coupling IC2 jointly is in order to output voltage and the frequency of stablizing IC controller 50.
Fig. 3 is that present embodiment is used for application examples schematic diagram on the electric blanket; Wherein this electric blanket is made up of the utility model power supply changeover device 100, lead 200, pad 300 and heating wire (load) 400, described power supply changeover device 100 1 termination AC power, the heater element 400 that the other end is connected in the pad 300 by lead 200, wherein alternating current converts low-voltage dc power supply through power supply changeover device 100 to by above-mentioned principle and gives heater element 400, thereby makes pad 300 heatings finish the function of electric blanket.Described electric blanket structure can also be the cushion structure of seat, or pet uses the electric heating mat structure, also can make structures such as electric heating shoes, does not therefore add at this and gives restriction.
The design focal point of the utility model is by the driving transformer work dexterously of IC controller, and the current/voltage that offers before the current/voltage of IC controller and transformer after AC power is integrated DC power supply and offer the electric blanket load after the transformer conversion all has the rectification of carrying out, filter, be connected with the IC controller by crossing negative protective circuit simultaneously, reach the effect in IC controller control transformer periodic duty loop, offer the stable low current voltage of electric blanket load effectively, guarantee the fail safe that people use, reduce rate of breakdown; Particularly can be by setting up under-voltage, the overvoltage crowbar of IC controller, can under the situation of under-voltage, overvoltage, protect the IC controller effectively, thereby improve the quality of products; The effect that the utility model is simple in structure, practical and tool is multi-functional.
In sum, it only is the power supply changeover device preferred embodiment of the multi-functional dc low-voltage electric blanket of the utility model, be not that technical scope of the present utility model is imposed any restrictions, so every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any trickle modification, equivalent variations and modification that above embodiment did.

Claims (4)

1, a kind of power supply changeover device of multi-functional dc low-voltage electric blanket, it is characterized in that: comprise a current rectifying and wave filtering circuit, one clamp circuit, one transformer, one is under-voltage, overvoltage crowbar, one IC controller, one lower pressure rectifier filter circuit, one frequency regulating circuit, described current rectifying and wave filtering circuit carries out filtering again after AC power being converted to DC power supply, one end and clamp circuit, transformer connects, this clamp circuit is connected with transformer, in order to absorb special-shaped ripple that transformer produces or peak value ripple and transformer frequency response be provided, the other end is delivered to under-voltage, overvoltage crowbar, this is under-voltage, overvoltage crowbar connects the IC controller, by under-voltage, overvoltage crowbar detects the voltage after the AC rectification filter, to avoid under-voltage, protection is provided under the overpressure situation IC controller; Described IC controller and transformer connect, and by IC controller driving transformer, described transformer output is connected with the lower pressure rectifier filter circuit, and this lower pressure rectifier filter circuit is in order to offer Dc low voltage power supply the electric blanket load; Described frequency regulating circuit is stablized the output voltage and the frequency of IC controller, it comprises the IC optical coupling that feedback current rectifying and wave filtering circuit, electric current and voltage are adjusted circuit and be connected with feedback current rectifying and wave filtering circuit, electric current and voltage adjustment circuit, described feedback current rectifying and wave filtering circuit is connected with transformer, IC controller, and electric current and voltage is adjusted circuit and is connected with the lower pressure rectifier filter circuit.
2, according to the power supply changeover device of the described multi-functional dc low-voltage electric blanket of claim 1, it is characterized in that: described current rectifying and wave filtering circuit be provided with a buffering ac filter circuit between AC power is connected, voltage is to the impact of circuit when extenuating firm starting.
3, according to the power supply changeover device of the described multi-functional dc low-voltage electric blanket of claim 1, it is characterized in that: the IC controller also is connected with IC controller current foldback circuit, avoids giving under overcurrent condition the IC controller that protection is provided.
4, according to the power supply changeover device of the described multi-functional dc low-voltage electric blanket of claim 1, it is characterized in that: described current rectifying and wave filtering circuit is reached and is connect the capacitor C 2 of this rectifier cell D1-D4 and forms by rectifier cell D1-D4, described clamp circuit comprise the rectifier cell D5 that connects with the IC controller and with current rectifying and wave filtering circuit connect mutually and the capacitor C 3 that connects, resistance R 1, transformer comprises primary coil TL1, secondary coil TL2 and feedback coil TL3, and primary coil TL1 and clamp circuit are mutually and connect capacitor C 3, resistance R 1 and rectifier cell D5 end and be connected; Described lower pressure rectifier filter circuit by and meet rectifier cell D7 and capacitor C 6 is formed, secondary coil TL2 and rectifier cell D7 and capacitor C 6 connect; Described feedback current rectifying and wave filtering circuit is arranged in parallel by rectifier cell D6 and capacitor C 5, and its rectifier cell D6, capacitor C 5 and feedback coil BL3 connect, described under-voltage, cross guarantor's protective circuit and form by resistance R 8.
CN 200620058419 2006-04-29 2006-04-29 Power supply converter of multifunction DC low tension electric blanket Expired - Fee Related CN2909687Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200620058419 CN2909687Y (en) 2006-04-29 2006-04-29 Power supply converter of multifunction DC low tension electric blanket

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200620058419 CN2909687Y (en) 2006-04-29 2006-04-29 Power supply converter of multifunction DC low tension electric blanket

Publications (1)

Publication Number Publication Date
CN2909687Y true CN2909687Y (en) 2007-06-06

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104092369A (en) * 2014-06-27 2014-10-08 北京控制工程研究所 Switch power supply feedback circuit based on digital optocoupler
CN104467463A (en) * 2014-11-26 2015-03-25 四川天启智源科技有限公司 Intelligent building management system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104092369A (en) * 2014-06-27 2014-10-08 北京控制工程研究所 Switch power supply feedback circuit based on digital optocoupler
CN104092369B (en) * 2014-06-27 2017-01-11 北京控制工程研究所 Switch power supply feedback circuit based on digital optocoupler
CN104467463A (en) * 2014-11-26 2015-03-25 四川天启智源科技有限公司 Intelligent building management system

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: DONGGUAN YINGSHENG ELECTRONIC PRODUCTS CO., LTD.

Free format text: FORMER OWNER: LI HEFA

Effective date: 20100108

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20100108

Address after: Ting Shan village, Houjie Town, Houjie Town, Guangdong, Dongguan province 523000

Patentee after: Dongguan Yingsheng Electrical Products Co., Ltd.

Address before: Guangdong province Houjie town of Dongguan City, Shan Ting Management District Dongguan Yingsheng electrical products Co. Ltd, zip code: 523940

Patentee before: Li Hefa

ASS Succession or assignment of patent right

Owner name: DONGGUAN WENLEKANG ELECTRIC BLACKET CO., LTD.

Free format text: FORMER OWNER: DONGGUAN YINGSHENG ELECTRIC APPLIANCE PRODUCTS CO., LTD.

Effective date: 20100629

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 523000 TINGSHAN NEW VILLAGE, HOUJIE TOWN, DONGGUAN CITY, GUANGDONG PROVINCETO: 523000 DONGGUAN WENLEKANG ELECTRONIC BLACKET CO., LTD.,JIANGJUN LING INDUSTRIAL DISTRICT, HOUJIE TOWN ONGGUAN CITY GUANGDONG PROVINCE

TR01 Transfer of patent right

Effective date of registration: 20100629

Address after: Houjie town of Dongguan City, Guangdong province 523000 general Ling Industrial Zone Dongguan WARMLECOM electric blanket Co. Ltd.

Patentee after: Dongguan Warmlecom Electric Blanket Co., Ltd.

Address before: 523000, Ting Shan village, Houjie Town, Guangdong, Dongguan

Patentee before: Dongguan Yingsheng Electrical Products Co., Ltd.

C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20070606

Termination date: 20120429