CN201388052Y - Power supply reverse polarity protection device - Google Patents
Power supply reverse polarity protection device Download PDFInfo
- Publication number
- CN201388052Y CN201388052Y CN200920020776U CN200920020776U CN201388052Y CN 201388052 Y CN201388052 Y CN 201388052Y CN 200920020776 U CN200920020776 U CN 200920020776U CN 200920020776 U CN200920020776 U CN 200920020776U CN 201388052 Y CN201388052 Y CN 201388052Y
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- power supply
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- 230000001681 protective effect Effects 0.000 claims description 7
- 230000005611 electricity Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 206010001541 Akinesia Diseases 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Abstract
The utility model discloses a power supply reverse polarity protection device, comprising a positive terminal of the power supply, a negative terminal of the power supply and an output terminal, wherein the positive terminal is connected with the output terminal by a controllable switch circuit, the controllable switch circuit is conducted when in the straight polarity of the power supply, and is shunt down when in the reverse polarity of the power supply. With the power supply reverse polarity protection device, the power supply output can be shunt down when in the reverse polarity of the power supply, thus avoiding the loss caused by the reverse polarity.
Description
Technical field
The utility model relates to a kind of protective device, specifically, relates to a kind of assurance device of error-polarity connection of power supply, belongs to the protective circuit technical field.
Background technology
Modern Port loading and unloading transportation is all finished by modernized plant equipment, and in the harbour handling Transport Machinery, except bridge crane and door machine, most machineries all adopt vapour, diesel engine as prime mover.In modern plant equipment structure, mechanical electric apparatus is its important part, and mechanical electric apparatus is made up of power supply (storage battery, generator and adjuster) and electricity consumption part (system of lighting a fire, cranking system, automatically controlled system, light new number etc.).Storage battery is the startup power supply of plant equipment, is connected in parallel with generator, to mechanical power consumption equipment power supply.When generator was worked, the required electric current of power consumption equipment was provided by generator, and storage battery is stored generator unnecessary electric energy after supplying with power consumption equipment.When generator is not worked or during low-speed running, then by the storage battery supplying electric current.Because storage battery is a direct current, the branch that anodal and negative pole are arranged, if with the accumulator polarity reversal connection, to burn alternating current generator diode rectification plate, electronic controller, turn to electronic installations such as relay, when causing plant section directly to damage, the loss that causes indirectly is also bigger, influence loading and unloading production operation, increase breakdown rate, reduced usage ratio of equipment.In working practice,, there is situation to take place often with the accumulator polarity reversal connection owing to part operation personnel carelessness, reason such as business skill is lower or lack a sense of responsibility; In maintenance work, repeatedly ran into the fault that causes because of the accumulator polarity reversal connection.Therefore, design and produce a protection to error-polarity connection of power supply device and become a problem of needing solution badly.
Summary of the invention
The utility model provides a kind of protection to error-polarity connection of power supply device at the above-mentioned problems in the prior art, the output of when error-polarity connection of power supply, cutting off the electricity supply of described protective device, thus avoided the loss that causes because of error-polarity connection.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of protection to error-polarity connection of power supply device is characterized in that described protective device comprises positive source terminal, power cathode terminal and lead-out terminal; Described positive source terminal connects described lead-out terminal by the gate-controlled switch circuit, the conducting when electric power polarity just connects of described gate-controlled switch circuit, and when error-polarity connection of power supply, turn-off.
According to the utility model, described gate-controlled switch circuit comprises relay; The diode of conducting was connected between described positive source terminal and the power cathode terminal after forming series arm when the coil of described relay and a power supply were just connecing; The normally opened contact of described relay is connected between described positive source terminal and the described lead-out terminal.
According to the utility model,, between described lead-out terminal and described power cathode terminal, be connected with the series arm that the output indicator luminous when described power supply is just connecing and first resistance are formed for the power supply access state is indicated; The series arm that the luminous power supply indicator and second resistance are formed when being connected with power supply just connecing between described positive source terminal and described power cathode terminal; The series arm that luminous alarm lamp and the 3rd resistance are formed when being connected with the power supply reversal connection between described positive source terminal and described power cathode terminal.
Described output indicator, power supply indicator and alarm lamp all adopt light-emitting diode.
According to the utility model, the series arm that the diode of conducting and alarm are formed when being connected with the power supply reversal connection between described positive source terminal and described power cathode terminal, the alarm sound of when described power supply reversal connection, sounding, the alert error-polarity connection.
According to the utility model, described power supply is a storage battery.
Compared with prior art; advantage of the present utility model and good effect are: the output of can cutting off the electricity supply automatically when error-polarity connection of power supply of described protective device; and by sound and light alarm signal prompt operating personnel wiring error; so that in time correct; thereby effectively reduced the failure rate of plant equipment; improve usage ratio of equipment, saved maintenance cost.Described protective device is safe and reliable, cost is lower, and simple in structure, volume is less, is easy to install, and is applicable to that harbour, mining industry, transportation etc. use the more enterprise of plant equipment.
Description of drawings
Fig. 1 is the circuit theory diagrams of an embodiment of protection to error-polarity connection of power supply device described in the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Please refer to the circuit theory diagrams of an embodiment of the utility model protection to error-polarity connection of power supply device shown in Figure 1, this embodiment with the 24V storage battery as power supply.
Described protection to error-polarity connection of power supply device includes positive source terminal a, power cathode terminal b and lead-out terminal c, and described lead-out terminal c connects the key switch of plant equipment.If battery positive voltage connects described positive source terminal a, battery terminal negative connects described power cathode terminal b, be called power supply and just connect; If battery positive voltage connects described power cathode terminal b, battery terminal negative connects described positive source terminal a, is called the power supply reversal connection.
Between described positive source terminal a and described power cathode terminal b, be connected with the gate-controlled switch circuit that relay constitutes.Wherein, the control series arm that relay coil JD, diode D2 and current-limiting resistance R2 form, described diode D2 conducting when accumulator positive connects; The relay normally open contact K corresponding with described relay coil JD is connected between described positive source terminal a and the described power cathode terminal b, forms switching branches.
When accumulator positive connects; described diode D2 conducting, described relay coil JD gets electric, and described normally opened contact K closure; storage battery is switched to the key switch of plant equipment, each electrical appliance part operate as normal of plant equipment automatically by the lead-out terminal c of described protection to error-polarity connection of power supply device.And if reverse connection of accumulator, described diode D2 ends, described relay coil JD dead electricity, described normally opened contact K disconnects, thereby has cut off the output of storage battery, makes plant equipment be failure to actuate, the loss of having avoided reverse connection of accumulator to cause.
Among this embodiment, between described lead-out terminal c and described power cathode terminal b, be connected with the output indication series arm that light-emitting diode D1 and current-limiting resistance R1 form.Described light-emitting diode D1 is as output indicator, connects at accumulator positive, when normally opened contact K is closed, and light-emitting diode D1 conducting is luminous, the expression power supply is normally exported, and at reverse connection of accumulator, when normally opened contact K disconnects, light-emitting diode D1 is not by luminous, and the expression abnormity of power supply can not be exported.
Between described positive source terminal a and described power cathode terminal b, also be connected with the power supply indication series arm that current-limiting resistance R3 and light-emitting diode D3 form, also be parallel with light-emitting diode D4 at described diode D3 two ends, described light-emitting diode D4 and described current-limiting resistance R3 form the indication series arm of reporting to the police.When accumulator positive connect, described light-emitting diode D3 conducting was luminous, and described light-emitting diode D4 is not by luminous; And when reverse connection of accumulator, described light-emitting diode D4 conducting is luminous, and described light-emitting diode D3 is not by luminous.By selecting the D 3 and the D4 of different colours, and the color of D3 and D4 all is different from the color of described light-emitting diode D2, can judge that storage battery is just to connect or reversal connection according to color, thereby can when reverse connection of accumulator, indicate that alert is corrected wiring error.
This embodiment also is connected with the warning series arm that diode D5, buzzer F and current-limiting resistance R4 form in order to report to the police by sound when the reverse connection of accumulator between described positive source terminal a and described power cathode terminal b.When accumulator positive connect, described diode D5 ended, and described buzzer F does not report to the police; And when reverse connection of accumulator, described diode D5 conducting, described buzzer F reports to the police, alert wiring error.
The foregoing description is except carrying out luminous demonstration to the key switch of plant equipment and by output indicator D1 and power supply indicator D3 by normal out-put supply when accumulator positive connects, cut-out is exported and is undertaken outside the warning of light harmony by alarm lamp D4 and buzzer F when reverse connection of accumulator, under the situation that accumulator positive connects, can also play and detect battery tension and cross low and power line and connect effect loosening, cause loose contact etc. because of corrosion.Be specially: if battery tension is crossed low or because of the power line loose contact, cause the relay akinesia, described output indicator D1 does not work, and power supply indicator D3 is luminous, the electrical appliance part cisco unity malfunction of plant equipment.Operating personnel can change storage battery or maintenance power circuit according to above-mentioned indication, and after fixing a breakdown, plant equipment can be recovered operate as normal.
It is to be noted; relay in selecting the foregoing description for use is controlled as the gate-controlled switch circuit the output of described protection to error-polarity connection of power supply device, also can select for use other devices that can realize the gate-controlled switch function such as triode, metal-oxide-semiconductor to form the gate-controlled switch circuit.
Certainly; the above only is a kind of preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (10)
1, a kind of protection to error-polarity connection of power supply device is characterized in that,
Described protective device comprises positive source terminal, power cathode terminal and lead-out terminal;
Described positive source terminal connects described lead-out terminal by the gate-controlled switch circuit, the conducting when electric power polarity just connects of described gate-controlled switch circuit, and when error-polarity connection of power supply, turn-off.
2, protection to error-polarity connection of power supply device according to claim 1 is characterized in that,
Described gate-controlled switch circuit comprises relay;
The diode of conducting was connected between described positive source terminal and the power cathode terminal after forming series arm when the coil of described relay and a power supply were just connecing;
The normally opened contact of described relay is connected between described positive source terminal and the described lead-out terminal.
3, protection to error-polarity connection of power supply device according to claim 1 and 2 is characterized in that, is connected with the series arm that the output indicator luminous when described power supply is just connecing and first resistance are formed between described lead-out terminal and described power cathode terminal.
4, protection to error-polarity connection of power supply device according to claim 1 and 2 is characterized in that, the series arm that the luminous power supply indicator and second resistance are formed when being connected with power supply just connecing between described positive source terminal and described power cathode terminal.
5, protection to error-polarity connection of power supply device according to claim 1 and 2 is characterized in that, the series arm that luminous alarm lamp and the 3rd resistance are formed when being connected with the power supply reversal connection between described positive source terminal and described power cathode terminal.
6, protection to error-polarity connection of power supply device according to claim 1 and 2 is characterized in that, the series arm that the diode of conducting and alarm are formed when being connected with the power supply reversal connection between described positive source terminal and described power cathode terminal.
7, protection to error-polarity connection of power supply device according to claim 3 is characterized in that, described output indicator is a light-emitting diode.
8, protection to error-polarity connection of power supply device according to claim 4 is characterized in that, described output indicator is a light-emitting diode.
9, protection to error-polarity connection of power supply device according to claim 5 is characterized in that, described output indicator is a light-emitting diode.
10, protection to error-polarity connection of power supply device according to claim 1 is characterized in that, described power supply is a storage battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920020776U CN201388052Y (en) | 2009-04-07 | 2009-04-07 | Power supply reverse polarity protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920020776U CN201388052Y (en) | 2009-04-07 | 2009-04-07 | Power supply reverse polarity protection device |
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| CN201388052Y true CN201388052Y (en) | 2010-01-20 |
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| CN200920020776U Expired - Fee Related CN201388052Y (en) | 2009-04-07 | 2009-04-07 | Power supply reverse polarity protection device |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420419A (en) * | 2011-12-21 | 2012-04-18 | 铜陵浩岩节能科技有限公司 | Power protection circuit |
| CN102664575A (en) * | 2012-05-09 | 2012-09-12 | 上海日用-友捷汽车电气有限公司 | Three-phase half-wave brushless direct-current motor controller with reverse connection protection function |
| CN103228905A (en) * | 2010-12-09 | 2013-07-31 | 罗伯特·博世有限公司 | Mobile starter device |
| CN103713232A (en) * | 2013-12-31 | 2014-04-09 | 厦门普罗太克科技有限公司 | Intelligent alarm capable of preventing battery reverse polarity |
| CN104124669A (en) * | 2013-04-26 | 2014-10-29 | 海洋王（东莞）照明科技有限公司 | Anti-reverse connection protection circuit and lighting device |
| CN104134971A (en) * | 2013-05-03 | 2014-11-05 | 海洋王（东莞）照明科技有限公司 | Battery polarity reverse alarm circuit and electronic equipment |
| WO2014190563A1 (en) * | 2013-05-29 | 2014-12-04 | 瑞吉高新科技股份有限公司 | Battery reversal connection protection apparatus and method for electronic cigarette |
| CN104218539A (en) * | 2013-05-29 | 2014-12-17 | 惠州市吉瑞科技有限公司 | Charging circuit and charging method capable of preventing reverse connection of rechargeable power supply |
| CN104426145A (en) * | 2013-09-09 | 2015-03-18 | 海洋王（东莞）照明科技有限公司 | Inverse connection prevention circuit and lamp |
| CN106981802A (en) * | 2017-05-04 | 2017-07-25 | 青州泰联电气有限公司 | A kind of automobile storage battery emergency management and rescue connecting line with safety device |
| CN115219915A (en) * | 2021-04-16 | 2022-10-21 | 杭州耕远电子技术有限公司 | Battery power state measuring and calculating device |
| CN116677542A (en) * | 2023-04-28 | 2023-09-01 | 上海泰创智享智能科技有限公司 | A fast-start containerized power station |
-
2009
- 2009-04-07 CN CN200920020776U patent/CN201388052Y/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103228905A (en) * | 2010-12-09 | 2013-07-31 | 罗伯特·博世有限公司 | Mobile starter device |
| CN102420419A (en) * | 2011-12-21 | 2012-04-18 | 铜陵浩岩节能科技有限公司 | Power protection circuit |
| CN102664575A (en) * | 2012-05-09 | 2012-09-12 | 上海日用-友捷汽车电气有限公司 | Three-phase half-wave brushless direct-current motor controller with reverse connection protection function |
| CN104124669A (en) * | 2013-04-26 | 2014-10-29 | 海洋王（东莞）照明科技有限公司 | Anti-reverse connection protection circuit and lighting device |
| CN104134971B (en) * | 2013-05-03 | 2017-10-13 | 海洋王（东莞）照明科技有限公司 | A kind of battery reversal connection warning circuit and electronic equipment |
| CN104134971A (en) * | 2013-05-03 | 2014-11-05 | 海洋王（东莞）照明科技有限公司 | Battery polarity reverse alarm circuit and electronic equipment |
| CN104218539A (en) * | 2013-05-29 | 2014-12-17 | 惠州市吉瑞科技有限公司 | Charging circuit and charging method capable of preventing reverse connection of rechargeable power supply |
| CN104218540A (en) * | 2013-05-29 | 2014-12-17 | 惠州市吉瑞科技有限公司 | Electronic cigarette reverse battery connection protecting device and method |
| WO2014190563A1 (en) * | 2013-05-29 | 2014-12-04 | 瑞吉高新科技股份有限公司 | Battery reversal connection protection apparatus and method for electronic cigarette |
| CN104218540B (en) * | 2013-05-29 | 2018-12-18 | 惠州市吉瑞科技有限公司 | Electronic cigarette battery reverse protection device and method |
| CN104426145A (en) * | 2013-09-09 | 2015-03-18 | 海洋王（东莞）照明科技有限公司 | Inverse connection prevention circuit and lamp |
| CN104426145B (en) * | 2013-09-09 | 2018-09-11 | 海洋王（东莞）照明科技有限公司 | Prevent reversed circuit and lamps and lanterns |
| CN103713232A (en) * | 2013-12-31 | 2014-04-09 | 厦门普罗太克科技有限公司 | Intelligent alarm capable of preventing battery reverse polarity |
| CN106981802A (en) * | 2017-05-04 | 2017-07-25 | 青州泰联电气有限公司 | A kind of automobile storage battery emergency management and rescue connecting line with safety device |
| CN115219915A (en) * | 2021-04-16 | 2022-10-21 | 杭州耕远电子技术有限公司 | Battery power state measuring and calculating device |
| CN116677542A (en) * | 2023-04-28 | 2023-09-01 | 上海泰创智享智能科技有限公司 | A fast-start containerized power station |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100120 Termination date: 20100407 |