CN103560555A - 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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- CN103560555A CN103560555A CN201310528846.8A CN201310528846A CN103560555A CN 103560555 A CN103560555 A CN 103560555A CN 201310528846 A CN201310528846 A CN 201310528846A CN 103560555 A CN103560555 A CN 103560555A
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- 238000005070 sampling Methods 0.000 claims abstract description 51
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000004065 semiconductor Substances 0.000 claims description 9
- 239000005955 Ferric phosphate Substances 0.000 claims description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 3
- 229940032958 ferric phosphate Drugs 0.000 claims description 3
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 claims description 3
- 229910000399 iron(III) phosphate Inorganic materials 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 229910001416 lithium ion Inorganic materials 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect 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, relate to especially a kind of car emergency from determining whether normal output and start power circuit.
Background technology
It is can start automobile when cannot start automobile for automobile power shortage or other reasons that car emergency starts power supply, it comprises a chargeable circuit, when automobile storage battery electric weight exhausts while causing automobile to start, car emergency can be started to power supply and be connected with automobile storage battery, for it provides startup power supply.Existing car emergency starts power supply and has a problem, after car emergency starts the first-class storage battery of the normal folder of both positive and negative polarity clip of power supply, when clip is taken away, output circuit continues to keep output state, be that clip two ends still have output, cannot judge in time whether clip takes off, if now the positive and negative clip of output is connected, to cause output short-circuit, burn out the situation generation that car emergency starts power supply.
Therefore, for the above-mentioned defect existing in currently available technology, be necessary to study in fact, so that a kind of scheme to be provided, solve the defect existing in prior art, avoid causing car emergency to start power supply and burn out.
Summary of the invention
For addressing the above problem, the object of the present invention is to provide a kind of car emergency from determining whether normal output to start power circuit, for adopting the output voltage at control circuit real-time sampling output both positive and negative polarity clip two ends, and relatively judge the output state of both positive and negative polarity output clip, output pulse signal to the second sample circuit in the situation that of the normal output of output both positive and negative polarity clip, and the voltage of monitoring sampling output, whether the clip of judgement output in time takes off, thereby avoid car emergency to start power supply misconnection, burns out.
For achieving the above object, technical scheme of the present invention is:
The car emergency that determines whether normal output starts a power circuit, comprises rechargeable battery, further comprises the first sample circuit, switching circuit, and the second sample circuit, amplifying circuit, control circuit, output clip positive pole and output 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 is anodal, 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, the voltage of described control circuit comparison the first sampling end and the second sampling end is to control the second input that outputs signal to amplifying circuit, amplifying circuit output amplifying signal is to conducting and the disconnection of switching circuit with control switch circuit, the output of Simultaneous Switching circuit connects output clip negative pole, output clip positive pole and output clip negative pole connect respectively the both positive and negative polarity of automobile storage battery as output,
Wherein the voltage range of rechargeable battery is 12.7～14.3V, and by the automobile storage battery that determines whether that below folder is first-class, when the voltage range of the second sampling end is 10.16～11.44V, now switching circuit disconnects no-output, and judgement output clip does not press from both sides storage battery; The voltage of the second sampling end is greater than 12.7V, and now switching circuit disconnects no-output, and judgement output clip is anti-; The voltage of the second sampling end equates with the voltage of the first sampling end, and voltage range is while being 12.7～14.3V, and now switching circuit disconnects no-output, the short circuit of judgement output clip; 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, the normal storage battery of getting on the car that presss from both sides of judgement output clip, simultaneously to the low and high level signal below switching circuit output 100Hz, this process is monitored the second sampling end voltage always, between the second sampling end short time voltage, can rise to 10.16～11.44V, now control circuit judgement clip takes off, and switching circuit cuts out.
Preferably, described rechargeable battery is lithium ion battery or ferric phosphate lithium cell.
Preferably, described switching circuit is 6 metal-oxide-semiconductor parallel connections, use be super-high-current metal-oxide-semiconductor, wherein source electrode is as the first input end of switching circuit, grid is as the second input of switching circuit, drain electrode is as the output of switching circuit.
Preferably, described amplifying circuit comprises the first triode, the second triode, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance and the 15 resistance, described the first triode is PNP triode, the emitter of described PNP triode and the 7th resistance one end are connected and are connected to the positive pole of rechargeable battery, the base stage of described PNP triode is connected with the other end of the 7th resistance and one end of the 8th resistance, described PNP transistor collector is connected with the 6th resistance and its series connection end inputs to the second input of switching circuit as output, described the 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 the ground connection of the 15 resistance, the collector electrode of NPN triode is connected with the other end of the 8th resistance.
Preferably, described the 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 the second sampling resistor comprises the 3rd resistance of series connection successively, the 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) by adopting the output voltage at control circuit real-time sampling output both positive and negative polarity clip two ends, and relatively judge the output state of both positive and negative polarity output clip, output pulse signal to the second sample circuit in the situation that of the normal output of output both positive and negative polarity clip, and the voltage of monitoring sampling output, whether the clip of judgement output in time takes off, thereby avoid car emergency to start power supply misconnection, burns out;
(2) circuit structure is simple, good stability.
Accompanying drawing explanation
Fig. 1 is the structured flowchart that the car emergency that certainly determines whether normal output of the embodiment of the present invention starts power circuit;
Fig. 2 is the circuit theory diagrams that the car emergency that certainly determines whether normal output of the embodiment of the present invention starts power circuit.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, 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, is not intended to limit the present invention.
On the contrary, the present invention contain any by claim, defined in marrow of the present invention and scope, make substitute, modification, equivalent method and scheme.Further, for the public is had a better understanding to the present invention, in below details of the present invention being described, detailed some specific detail sections of having described.Do not have for a person skilled in the art the description of these detail sections can understand the present invention completely yet.
Referring to Fig. 1, be depicted as a kind of from determining whether that the car emergency of normal output starts the structured flowchart of power circuit of the embodiment of the present invention, it comprises rechargeable battery 10, the first sample circuit 20, switching circuit 30, the second sample circuit 50, amplifying circuit 40, control circuit 60, output clip anodal 70 and output 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 is anodal, the output of the first sample circuit 20 is connected with the first input end of control circuit 60 as the first sampling end, 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 the second input that outputs signal to amplifying circuit, amplifying circuit output amplifying signal is to conducting and the disconnection of switching circuit 30 with control switch circuit 30, the output of Simultaneous Switching circuit connects output clip negative pole, output clip positive pole and output clip negative pole connect respectively the both positive and negative polarity of automobile storage battery as output, wherein the voltage range of rechargeable battery is 12.7～14.3V, and by the automobile storage battery that determines whether that below folder is first-class, when the voltage range of the second sampling end is 10.16～11.44V, now switching circuit disconnects no-output, and judgement output clip does not press from both sides storage battery, the voltage of the second sampling end is greater than 12.7V, and now switching circuit disconnects no-output, and judgement output clip is anti-, the voltage of the second sampling end equates with the voltage of the first sampling end, and voltage range is while being 12.7～14.3V, and now switching circuit disconnects no-output, the short circuit of judgement output clip, 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, the normal storage battery of getting on the car that presss from both sides of judgement output clip, simultaneously to the low and high level signal below switching circuit output 100Hz, this process is monitored the second sampling end voltage always, between the second sampling end short time voltage, can rise to 10.16～11.44V, now control circuit judgement clip takes off, and switching circuit cuts out.
By above setting, make the output voltage at control circuit real-time sampling output both positive and negative polarity clip two ends, and relatively judge the output state of both positive and negative polarity output clip, output pulse signal to the second sample circuit in the situation that of the normal output of output both positive and negative polarity clip, and the voltage of monitoring sampling output, whether the clip of judgement output in time takes off, thereby avoid car emergency to start power supply misconnection, burns out.
Referring to Fig. 2, be depicted as the circuit structure diagram of each module in a concrete application example, rechargeable battery 10 is lithium ion battery or ferric phosphate lithium cell.Switching circuit 30 is MOS (metal-oxide semiconductor (MOS), Metal Oxide Semiconductor) pipe switch Q1, be 6 metal-oxide-semiconductor parallel connections (only illustrating in the drawings one), with be super-high-current metal-oxide-semiconductor, wherein source electrode is as the first input end of switching circuit 30, grid is as the second input of switching circuit 30, and drain electrode is 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, the second triode Q3, the 6th resistance R 6, the 7th resistance R 7, the 8th resistance R 8, the 9th resistance R 9 and the 15 resistance R 15, the first triode Q2 is PNP triode, the emitter of PNP triode and the 7th resistance R 7 one end are connected and are connected to the positive pole of rechargeable battery, the base stage of PNP triode is connected with the other end of the 7th resistance R 7 and one end of the 8th resistance R 8, PNP transistor collector R6 and its series connection end of connecting with the 6th resistance inputs to the second input of switching circuit 30 as output, the second triode Q3 is NPN triode, the output of control circuit 60 connects one end of the 9th resistance R 9, the other end of the 9th resistance R 9 is connected and is connected with the base stage of NPN triode with the 15 resistance R 15 one end, the emitter of NPN triode connects the other end the ground connection of the 15 resistance, the collector electrode of NPN triode is connected with the other end of the 8th resistance.The first sample circuit 20 comprises that the first resistance R 1 of series connection and the series connection end of the second resistance R 2, the first resistance R 1 and the second resistance R 2 are as the first sample circuit output.The second sampling resistor 50 comprises the 3rd resistance R 3 of series connection successively, the 4th resistance R 4 and the 5th resistance R 5, the series connection end of the 3rd resistance R 3 and the 4th resistance R 4 is as the output of input connecting valve circuit, and the series connection end of the 4th resistance R 4 and the 5th resistance R 5 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.The car emergency that certainly determines whether normal output of realizing by above embodiment starts power circuit, simple in structure, good stability.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
1. one kind starts power circuit from the car emergency that determines whether normal output, comprise rechargeable battery (10), it is characterized in that, further comprise the first sample circuit (20), switching circuit (30), the second sample circuit (50), amplifying circuit (40), control circuit (60), output clip anodal (70) and output 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 is anodal, and the output of the first sample circuit (20) is connected with the first input end of control circuit (60) as the first sampling end, 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, described control circuit (60) compares the voltage of the first sampling end and the second sampling end to control the second input that outputs signal to amplifying circuit, amplifying circuit output amplifying signal is to conducting and the disconnection of switching circuit (30) with control switch circuit (30), the output of Simultaneous Switching circuit connects output clip negative pole, output clip positive pole and output clip negative pole connect respectively the both positive and negative polarity of automobile storage battery as output,
Wherein the voltage range of rechargeable battery is 12.7～14.3V, and by the automobile storage battery that determines whether that below folder is first-class, when the voltage range of the second sampling end is 10.16～11.44V, now switching circuit disconnects no-output, and judgement output clip does not press from both sides storage battery; The voltage of the second sampling end is greater than 12.7V, and now switching circuit disconnects no-output, and judgement output clip is anti-; The voltage of the second sampling end equates with the voltage of the first sampling end, and voltage range is while being 12.7～14.3V, and now switching circuit disconnects no-output, the short circuit of judgement output clip; 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, the normal storage battery of getting on the car that presss from both sides of judgement output clip, simultaneously to the low and high level signal below switching circuit output 100Hz, this process is monitored the second sampling end voltage always, between the second sampling end short time voltage, can rise to 10.16～11.44V, now control circuit judgement clip takes off, and switching circuit cuts out.
2. the car emergency from determining whether normal output according to claim 1 starts power circuit, it is characterized in that, described rechargeable battery (10) is lithium ion battery or ferric phosphate lithium cell.
3. the car emergency from determining whether normal output according to claim 1 starts power circuit, it is characterized in that, described switching circuit (30) is 6 metal-oxide-semiconductor parallel connections, with be super-high-current metal-oxide-semiconductor, wherein source electrode is as the first input end of switching circuit (30), grid is as the second input of switching circuit (30), and drain electrode is as the output of switching circuit (30).
4. the car emergency from determining whether normal output according to claim 1 starts power circuit, it is characterized in that, described amplifying circuit (40) comprises the first triode, the second triode, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance and the 15 resistance, described the first triode is PNP triode, the emitter of described PNP triode and the 7th resistance one end are connected and are connected to the positive pole of rechargeable battery, the base stage of described PNP triode is connected with the other end of the 7th resistance and one end of the 8th resistance, described PNP transistor collector is connected with the 6th resistance and its series connection end inputs to the second input of switching circuit as output, described the 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 the ground connection of the 15 resistance, the collector electrode of NPN triode is connected with the other end of the 8th resistance.
5. the car emergency from determining whether normal output according to claim 1 starts power circuit, it is characterized in that, described the 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. the car emergency from determining whether normal output according to claim 1 starts power circuit, it is characterized in that, described the second sampling resistor (50) comprises the 3rd resistance of series connection successively, the 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 that certainly determines whether normal output of claim 1 to 6, start power circuit, 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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| Application Number | Priority Date | Filing Date | Title |
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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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| Application Number | Priority Date | Filing Date | Title |
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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 CN103560555B (en) | 2015-06-10 |
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Cited By (4)
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| CN104092259A (en) * | 2014-07-11 | 2014-10-08 | 常州华达科捷光电仪器有限公司 | Charging protection circuit used 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 |
| 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 |
| USRE49976E1 (en) | 2016-06-30 | 2024-05-21 | Shenzhen Carku Technology Co., Ltd. | Battery clamp |
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| 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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| CN103560555B (en) | 2015-06-10 |
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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. |
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