CN103560555B - Automobile emergency starting power circuit capable of automatically judging normal output - Google Patents
Automobile emergency starting power circuit capable of automatically judging normal output Download PDFInfo
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- CN103560555B CN103560555B CN201310528846.8A CN201310528846A CN103560555B CN 103560555 B CN103560555 B CN 103560555B CN 201310528846 A CN201310528846 A CN 201310528846A CN 103560555 B CN103560555 B CN 103560555B
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- 238000005070 sampling Methods 0.000 claims abstract description 45
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000004065 semiconductor Substances 0.000 claims description 9
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 3
- 229910001416 lithium ion Inorganic materials 0.000 claims description 3
- 239000005955 Ferric phosphate Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229940032958 ferric phosphate Drugs 0.000 description 2
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 2
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
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Abstract
The embodiment of the invention discloses an automobile emergency starting power circuit capable of automatically judging normal output. The automobile emergency starting power circuit capable of automatically judging normal output comprises a rechargeable battery, a first sampling circuit, a switch circuit, a second sampling circuit, an amplifying circuit, a control circuit, an output clip positive pole and an output clip negative pole. The voltage of the rechargeable battery ranges from 12.7V to 14.3V, and therefore whether a good automobile storage battery is clipped or not can be judged. When the voltage of a second sampling end is equal to the difference of the voltage of a first sampling end and the voltage of the automobile storage battery and smaller than 10.16V, output is conducted on the switch circuit, whether an output clip normally clips the automobile storage battery or not is judged, and meanwhile a high-low level signal lower than 100Hz is output to the switch circuit. In the process, the voltage of the second sampling end is monitored all the time, the voltage of the second sampling end can rise to 10.16V to 11.44V in a short time, the control circuit judges that the clip is taken down at this time, and the switch circuit is disconnected. According to the circuit, a short circuit of the automobile emergency starting power circuit is avoided and the automobile emergency starting power circuit is prevented from being burnt out.
Description
Technical field
The invention belongs to power technique fields, particularly a kind of from determining whether that the normal car emergency exported starts power circuit.
Background technology
Car emergency starts time power supply is and cannot starts automobile for automobile power shortage or other reasons can start automobile, it comprises a chargeable circuit, when automobile storage battery electricity exhaust cause automobile to start time, car emergency can be started power supply to be connected with automobile storage battery, for it provides startup power supply.Existing car emergency starts power supply and there is a problem, namely after the both positive and negative polarity clip of car emergency startup power supply normally presss from both sides first-class storage battery, when clip is taken away, output circuit continues to keep output state, namely clip two ends still have output, cannot judge whether clip takes off in time, if now the positive and negative clip of output is connected, to output short-circuit be caused, burn out the situation generation that car emergency starts power supply.
Therefore, for the above-mentioned defect existed in currently available technology, be necessary to study in fact, to provide a kind of scheme, solve the defect existed in prior art, avoid causing car emergency to start power supply and burn out.
Summary of the invention
For solving the problem, the object of the present invention is to provide a kind of from determining whether that the normal car emergency exported starts power circuit, for the output voltage adopting control circuit real-time sampling to export both positive and negative polarity clip two ends, and multilevel iudge both positive and negative polarity exports the output state of clip, output pulse signal to the second sample circuit when exporting both positive and negative polarity clip and normally exporting, and monitor the voltage of sampled output, judge whether export clip takes off in time, thus avoid car emergency to start power supply misconnection burning out.
For achieving the above object, technical scheme of the present invention is:
From determining whether that the normal car emergency exported starts a power circuit, comprising rechargeable battery, comprising the first sample circuit further, switching circuit, the second sample circuit, amplifying circuit, control circuit, export clip positive pole and export clip negative pole,
Described rechargeable battery is in parallel with the first sample circuit, and the positive pole of rechargeable battery is connected with output clip positive pole, and the output of the first sample circuit is connected with the first input end of control circuit as the first sampling end, the negative pole of rechargeable battery is connected with the first input end of switching circuit, the output of switching circuit is as an input of the second sample circuit, the output of the second sample circuit is connected with the second input of control circuit as the second sampling end, described control circuit compares the voltage of the first sampling end and the second sampling end to control to output signal to the second input of amplifying circuit, amplifying circuit exports amplifying signal to switching circuit with the conducting of control switch circuit and disconnection, the output of Simultaneous Switching circuit connects output clip negative pole, output clip positive pole and output clip negative pole connect the both positive and negative polarity of automobile storage battery respectively as output,
Wherein the voltage range of rechargeable battery is 12.7-14.3V, presss from both sides first-class automobile storage battery by following determining whether, when the voltage range of the second sampling end is 10.16-11.44V, now switching circuit disconnects no-output, judges that exporting clip does not press from both sides storage battery of getting on the car; The voltage of the second sampling end is greater than 12.7V, and now switching circuit disconnects no-output, judges to export clip anti-; The voltage of the second sampling end is equal with the voltage of the first sampling end, and when voltage range is 12.7-14.3V, now switching circuit disconnects no-output, judges to export clip short circuit; When the voltage of the second sampling end equals the difference of the first sampling end voltage and automobile storage battery voltage and is less than 10.16V, now switching circuit has output, judge that exporting clip normally presss from both sides storage battery of getting on the car, export the low and high level signal of below 100Hz to switching circuit simultaneously, this process monitors the second sampling end voltage always, can rise to 10.16-11.44V between the second sampling end short time voltage, now control circuit judges that exporting clip takes off, closes switching circuit.
Preferably, described rechargeable battery is lithium ion battery or ferric phosphate lithium cell.
Preferably, described switching circuit is 6 metal-oxide-semiconductor parallel connections, be super-high-current metal-oxide-semiconductor, wherein source electrode is as the first input end of switching circuit, and grid, as the second input of switching circuit, drains as the output of switching circuit.
Preferably, described amplifying circuit comprises the first triode, second triode, 6th resistance, 7th resistance, 8th resistance, 9th resistance and the 15 resistance, described first triode is PNP triode, the emitter of described PNP triode is connected with the 7th resistance one end and is connected to the positive pole of rechargeable battery, the base stage of described PNP triode is connected with one end of the other end of the 7th resistance and the 8th resistance, described PNP triode collector electrode with the 6th resistant series and it is connected the second input held and input to switching circuit as output, described second triode is NPN triode, the output of control circuit connects one end of the 9th resistance, the other end of the 9th resistance is connected with the 15 resistance one end and is connected with the base stage of NPN triode, the emitter of NPN triode connects the other end of the 15 resistance and ground connection, the collector electrode of NPN triode is connected with the other end of the 8th resistance.
Preferably, described first sample circuit comprises the first resistance and second resistance of series connection, and the series connection end of the first resistance and the second resistance is as the first sample circuit output.
Preferably, described second sample circuit comprises the 3rd resistance of connecting successively, 4th resistance and the 5th resistance, the series connection end of the 3rd resistance and the 4th resistance is as the output of input connecting valve circuit, and the series connection end of the 4th resistance and the 5th resistance is connected to the second input of control circuit as output.
Preferably, described control circuit is single-chip microcomputer EM78P260, and its pin P52 is as the first input end of control circuit, and its pin P51 is as the second input of control circuit, and its pin P57 is as the output of control circuit.
Compared with prior art, beneficial effect of the present invention is as follows:
(1) output voltage by adopting control circuit real-time sampling to export both positive and negative polarity clip two ends, and multilevel iudge both positive and negative polarity exports the output state of clip, output pulse signal to the second sample circuit when exporting both positive and negative polarity clip and normally exporting, and monitor the voltage of sampled output, judge whether export clip takes off in time, thus avoid car emergency to start power supply misconnection burning out;
(2) circuit structure is simple, good stability.
Accompanying drawing explanation
Fig. 1 is the structured flowchart certainly determining whether the normal car emergency startup power circuit exported of the embodiment of the present invention;
Fig. 2 is the circuit theory diagrams certainly determining whether the normal car emergency startup power circuit exported of the embodiment of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
On the contrary, the present invention is contained any by the substituting of making on marrow of the present invention and scope of defining of claim, amendment, equivalent method and scheme.Further, in order to make the public have a better understanding to the present invention, in hereafter details of the present invention being described, detailedly describe some specific detail sections.Do not have the description of these detail sections can understand the present invention completely for a person skilled in the art yet.
See Fig. 1, be depicted as a kind of from determining whether that the normal car emergency exported starts the structured flowchart of power circuit of the embodiment of the present invention, it comprises rechargeable battery 10, first sample circuit 20, switching circuit 30, second sample circuit 50, amplifying circuit 40, control circuit 60, export clip positive pole 70 and export clip negative pole 80, its connected mode is as follows: rechargeable battery 10 is in parallel with the first sample circuit 20, the positive pole of rechargeable battery 10 is connected with output clip positive pole, the output of the first sample circuit 20 is connected as the first input end of the first sampling end with control circuit 60, the negative pole of rechargeable battery 10 is connected with the first input end of switching circuit 30, the output of switching circuit 30 is as an input of the second sample circuit 50, the output of the second sample circuit 50 is connected with the second input of control circuit 60 as the second sampling end, control circuit 60 compares the voltage of the first sampling end and the second sampling end to control to output signal to the second input of amplifying circuit, amplifying circuit exports amplifying signal to switching circuit 30 with the conducting of control switch circuit 30 and disconnection, the output of Simultaneous Switching circuit connects output clip negative pole, output clip positive pole and output clip negative pole connect the both positive and negative polarity of automobile storage battery respectively as output, wherein the voltage range of rechargeable battery is 12.7-14.3V, presss from both sides first-class automobile storage battery by following determining whether, when the voltage range of the second sampling end is 10.16-11.44V, now switching circuit disconnects no-output, judges that exporting clip does not press from both sides storage battery of getting on the car, the voltage of the second sampling end is greater than 12.7V, and now switching circuit disconnects no-output, judges to export clip anti-, the voltage of the second sampling end is equal with the voltage of the first sampling end, and when voltage range is 12.7-14.3V, now switching circuit disconnects no-output, judges to export clip short circuit, when the voltage of the second sampling end equals the difference of the first sampling end voltage and automobile storage battery voltage and is less than 10.16V, now switching circuit has output, judge that exporting clip normally presss from both sides storage battery of getting on the car, export the low and high level signal of below 100Hz to switching circuit simultaneously, this process monitors the second sampling end voltage always, can rise to 10.16-11.44V between the second sampling end short time voltage, now control circuit judges that exporting clip takes off, closes switching circuit.
By above setting, control circuit real-time sampling is made to export the output voltage at both positive and negative polarity clip two ends, and multilevel iudge both positive and negative polarity exports the output state of clip, output pulse signal to the second sample circuit when exporting both positive and negative polarity clip and normally exporting, and monitor the voltage of sampled output, judge whether export clip takes off in time, thus avoid car emergency to start power supply misconnection burning out.
See Fig. 2, be depicted as the circuit structure diagram of each module in an embody rule example, rechargeable battery 10 is lithium ion battery or ferric phosphate lithium cell.Switching circuit 30 is MOS (metal-oxide semiconductor (MOS), MetalOxide Semiconductor) pipe switch Q1, be 6 metal-oxide-semiconductor parallel connections (only illustrating one in the drawings), be super-high-current metal-oxide-semiconductor, wherein source electrode is as the first input end of switching circuit 30, grid, as the second input of switching circuit 30, drains as the output of switching circuit 30.Metal-oxide-semiconductor is that cost low spatial is little as the benefit of switching circuit.Amplifying circuit 40 comprises the first triode Q2, second triode Q3, 6th resistance R6, 7th resistance R7, 8th resistance R8, 9th resistance R9 and the 15 resistance R15, first triode Q2 is PNP triode, the emitter of PNP triode is connected with the 7th resistance R7 one end and is connected to the positive pole of rechargeable battery, the base stage of PNP triode is connected with one end of the other end of the 7th resistance R7 and the 8th resistance R8, PNP triode collector electrode with the 6th resistant series R6 and it is connected the second input held and input to switching circuit 30 as output, second triode Q3 is NPN triode, the output of control circuit 60 connects one end of the 9th resistance R9, the other end of the 9th resistance R9 is connected with the 15 resistance R15 one end and is connected with the base stage of NPN triode, the emitter of NPN triode connects the other end of the 15 resistance and ground connection, the collector electrode of NPN triode is connected with the other end of the 8th resistance.First sample circuit 20 comprises the first resistance R1 and the second resistance R2 of series connection, and the series connection end of the first resistance R1 and the second resistance R2 is as the first sample circuit output.Second sample circuit 50 comprises the 3rd resistance R3 connected successively, 4th resistance R4 and the 5th resistance R5, the series connection end of the 3rd resistance R3 and the 4th resistance R4 is as the output of input connecting valve circuit, and the series connection end of the 4th resistance R4 and the 5th resistance R5 is connected to the second input of control circuit as output.Control circuit is single-chip microcomputer EM78P260, and its pin P52 is as the first input end of control circuit, and its pin P51 is as the second input of control circuit, and its pin P57 is as the output of control circuit.What realized by above embodiment determines whether that the normal car emergency exported starts power circuit certainly, and structure is simple, good stability.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. one kind starts power circuit from the car emergency determining whether normally to export, comprise rechargeable battery (10), it is characterized in that, comprise the first sample circuit (20) further, switching circuit (30), the second sample circuit (50), amplifying circuit (40), control circuit (60), exports clip positive pole (70) and exports clip negative pole (80)
Described rechargeable battery (10) is in parallel with the first sample circuit (20), the positive pole of rechargeable battery (10) is connected with output clip positive pole, and the output of the first sample circuit (20) is connected as the first input end of the first sampling end with control circuit (60), the negative pole of rechargeable battery (10) is connected with the first input end of switching circuit (30), the output of switching circuit (30) is as an input of the second sample circuit (50), the output of the second sample circuit (50) is connected as second input of the second sampling end with control circuit (60), described control circuit (60) compares the voltage of the first sampling end and the second sampling end to control to output signal to the second input of amplifying circuit, amplifying circuit exports amplifying signal to switching circuit (30) with the conducting of control switch circuit (30) and disconnection, the output of Simultaneous Switching circuit connects output clip negative pole, output clip positive pole and output clip negative pole connect the both positive and negative polarity of automobile storage battery respectively as output,
Wherein the voltage range of rechargeable battery is 12.7-14.3V, presss from both sides first-class automobile storage battery by following determining whether, when the voltage range of the second sampling end is 10.16-11.44V, now switching circuit disconnects no-output, judges that exporting clip does not press from both sides storage battery of getting on the car; The voltage of the second sampling end is greater than 12.7V, and now switching circuit disconnects no-output, judges to export clip anti-; The voltage of the second sampling end is equal with the voltage of the first sampling end, and when voltage range is 12.7-14.3V, now switching circuit disconnects no-output, judges to export clip short circuit; When the voltage of the second sampling end equals the difference of the first sampling end voltage and automobile storage battery voltage and is less than 10.16V, now switching circuit has output, judge that exporting clip normally presss from both sides storage battery of getting on the car, export the low and high level signal of below 100Hz to switching circuit simultaneously, this process monitors the second sampling end voltage always, can rise to 10.16-11.44V between the second sampling end short time voltage, now control circuit judges that exporting clip takes off, closes switching circuit.
2. according to claim 1 from determining whether that the normal car emergency exported starts power circuit, it is characterized in that, described rechargeable battery (10) is lithium ion battery.
3. according to claim 1 from determining whether that the normal car emergency exported starts power circuit, it is characterized in that, described switching circuit (30) is 6 metal-oxide-semiconductor parallel connections, be super-high-current metal-oxide-semiconductor, wherein source electrode is as the first input end of switching circuit (30), grid, as the second input of switching circuit (30), drains as the output of switching circuit (30).
4. according to claim 1 from determining whether that the normal car emergency exported starts power circuit, it is characterized in that, described amplifying circuit (40) comprises the first triode, second triode, 6th resistance, 7th resistance, 8th resistance, 9th resistance and the 15 resistance, described first triode is PNP triode, the emitter of described PNP triode is connected with the 7th resistance one end and is connected to the positive pole of rechargeable battery, the base stage of described PNP triode is connected with one end of the other end of the 7th resistance and the 8th resistance, described PNP triode collector electrode with the 6th resistant series and it is connected the second input held and input to switching circuit as output, described second triode is NPN triode, the output of control circuit connects one end of the 9th resistance, the other end of the 9th resistance is connected with the 15 resistance one end and is connected with the base stage of NPN triode, the emitter of NPN triode connects the other end of the 15 resistance and ground connection, the collector electrode of NPN triode is connected with the other end of the 8th resistance.
5. according to claim 1 from determining whether that the normal car emergency exported starts power circuit, it is characterized in that, described first sample circuit (20) comprises the first resistance and second resistance of series connection, and the series connection end of the first resistance and the second resistance is as the first sample circuit output.
6. according to claim 1 from determining whether that the normal car emergency exported starts power circuit, it is characterized in that, described second sample circuit (50) comprises the 3rd resistance of connecting successively, 4th resistance and the 5th resistance, the series connection end of the 3rd resistance and the 4th resistance is as the output of input connecting valve circuit, and the series connection end of the 4th resistance and the 5th resistance is connected to the second input of control circuit as output.
7. according to the arbitrary described car emergency startup power circuit certainly determining whether normal output of claim 1 to 6, it is characterized in that, described control circuit is single-chip microcomputer EM78P260, its pin P52 is as the first input end of control circuit, its pin P51 is as the second input of control circuit, and its pin P57 is as the output of control circuit.
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| CN201310528846.8A CN103560555B (en) | 2013-10-30 | 2013-10-30 | Automobile emergency starting power circuit capable of automatically judging normal output |
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| CN201310528846.8A CN103560555B (en) | 2013-10-30 | 2013-10-30 | Automobile emergency starting power circuit capable of automatically judging normal output |
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| CN103560555B true CN103560555B (en) | 2015-06-10 |
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| CN104092259B (en) * | 2014-07-11 | 2016-06-22 | 常州华达科捷光电仪器有限公司 | A kind of charge protector for rechargeable battery |
| WO2016082148A1 (en) * | 2014-11-27 | 2016-06-02 | 鑫能源科技(深圳)有限公司 | Battery protection device |
| EP3264515B1 (en) | 2016-06-30 | 2019-04-03 | Shenzhen Carku Technology Co., Ltd. | Smart battery jumper cable |
| CN107342612A (en) * | 2017-08-15 | 2017-11-10 | 宁夏黑金昊源绿能科技有限公司 | Voltage switching output device and method |
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| JP3069498B2 (en) * | 1994-09-01 | 2000-07-24 | 富士通株式会社 | Charge / discharge device and electronic equipment |
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Effective date of registration: 20240117 Address after: No. 358-1, Xiamen Village, Heshang Town, Xiaoshan District, Hangzhou City, Zhejiang Province, 311265 Patentee after: Hangzhou Zhongqi Electronics Co.,Ltd. Address before: 311258 Sanwu Industrial Zone, Shanhe Village, Wenyan Town, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee before: HANGZHOU SUNLIGHT TOOLS Co.,Ltd. |