CN103532225A - Power switching circuit of dual-power electric car - Google Patents
Power switching circuit of dual-power electric car Download PDFInfo
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- CN103532225A CN103532225A CN201310525263.XA CN201310525263A CN103532225A CN 103532225 A CN103532225 A CN 103532225A CN 201310525263 A CN201310525263 A CN 201310525263A CN 103532225 A CN103532225 A CN 103532225A
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Abstract
A power switching circuit of a dual-power electric car comprises an SCM (single-chip microcomputer), a relay KM1, a relay KM2, a resistor R9, a resistor R10, a single-pole double-throw switch S1, a single-pole double-throw switch S2, a triode Q1, a triode Q2, a diode D1 and a diode D2. According to the power switching circuit, two battery packs are connected with normally open contacts of the relays in series before parallel connection, the automatic switching of the two battery packs during usage is realized by the aid of the SCM and a control circuit, the manual switching of the battery packs during usage is realized by the aid of a hand switch, and two power supplies can be connected in parallel through the hand switch and used simultaneously under the condition that power of the two battery packs is used up, so that the electric car can run another distance.
Description
Technical field
The present invention relates to electric automobiles, is a kind of duplicate supply electric vehicle power sources commutation circuit specifically.
Background technology
electric motor car is as a kind of new forms of energy vehicles, because of it, to have price low, practical, the advantages such as use cost is low are very popular, but electric motor car industry is in China's development or primary stage, battery, automatically controlled and motor technology is also immature, causes electric motor car to also have very large defect at course continuation mileage and charging interval, to consumer, makes troubles.At present, electric motor car on market mostly adopts a large storage battery power supply, once but storage battery breaks down like this, electric motor car will be used, if strengthen battery capacity, will increase the heavy burden of electric motor car, make the stressed increasing in chassis, chassis intensity is had a significant impact, electric motor car is also because the increase of complete vehicle weight seems that motor power is not enough, manned or climbing is hard, and increased consumer purchase car cost; There is fewer companies that a standby storage battery of low capacity has been installed in electric motor car, if there is large storage battery, cast anchor, can open headstock car bonnet, large storage battery is pulled down, change standby little storage battery, but operation bothers very much like this, for some, is ignorant of the people of wiring, be easy to a line wrong, cause accident to occur.
Summary of the invention
The shortcoming existing in order to overcome above-mentioned prior art, the object of the present invention is to provide a kind of can auto switching electric source the manual duplicate supply electric vehicle power sources commutation circuit of Switching power again.
In order to address the above problem, the present invention is by the following technical solutions: a kind of duplicate supply electric vehicle power sources commutation circuit, it is characterized in that, it comprises a single-chip microcomputer, relay K M1, relay K M2, resistance R 9, resistance R 10, single-pole double-throw switch (SPDT) S1, single-pole double-throw switch (SPDT) S2, triode Q1, triode Q2, diode D1 and diode D2; After an output pin series resistance R9 of described single-chip microcomputer, be connected with the base stage b of triode Q1, at the reverse series diode D1 of the collector electrode c of triode Q1, relay coil KM1 is in parallel with diode D1; After another output pin series resistance R10 of described single-chip microcomputer, be connected with the base stage b of triode Q2, at the reverse series diode D2 of the collector electrode c of triode Q2, relay coil KM2 is in parallel with diode D2; The contact 1 of described single-pole double-throw switch (SPDT) S1 is connected with the input of relay K M1, and its contact 2 is connected with the negative electrode of diode D1 and the collector electrode c of triode Q1 respectively, and contact 3 is connected with power supply VCC; The contact 1 of described single-pole double-throw switch (SPDT) S2 is connected with the input of relay K M2, and its contact 2 is connected with the negative electrode of diode D2 and the collector electrode c of triode Q2 respectively, and contact 3 is connected with power supply VCC; Battery pack A and battery pack B are in parallel, and their positive pole links together after being connected in series respectively the normally opened contact of relay K M1 and relay K M2, then is connected in series with the power consumption equipment of electric motor car.
Preferably, described triode Q1 and Q2 are 8550PNP type triode.
Preferably, described single-chip microcomputer is AT89C52 single-chip microcomputer.
The invention has the beneficial effects as follows: it was connected in series respectively a relay normally open and gets an electric shock before two Battery pack group parallel connections, by single-chip microcomputer and control circuit, realized the automatic conversion in use of two battery pack; By hand switch, realized the switching of manually battery pack being used, in the situation that the electric weight of two battery pack is all finished, also can be by hand switch, two groups of power supplys are in parallel, use simultaneously, makes travel again stretch journey of electric motor car.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is described further:
Fig. 1 is circuit diagram of the present invention.
Embodiment
As shown in Figure 1, one embodiment of the present invention comprises a single-chip microcomputer, relay K M1, relay K M2, resistance R 9, resistance R 10, single-pole double-throw switch (SPDT) S1, single-pole double-throw switch (SPDT) S2, triode Q1, triode Q2, diode D1 and diode D2; After an output pin series resistance R9 of described single-chip microcomputer, be connected with the base stage b of triode Q1, at the reverse series diode D1 of the collector electrode c of triode Q1, relay coil KM1 is in parallel with diode D1; After another output pin series resistance R10 of described single-chip microcomputer, be connected with the base stage b of triode Q2, at the reverse series diode D2 of the collector electrode c of triode Q2, relay coil KM2 is in parallel with diode D2; The intermediate contact 1 of described single-pole double-throw switch (SPDT) S1 is connected with the input of relay K M1, and its contact 2 is connected with the negative electrode of diode D1 and the collector electrode c of triode Q1 respectively, and contact 3 is connected with power supply VCC; The intermediate contact 1 of described single-pole double-throw switch (SPDT) S2 is connected with the input of relay K M2, and its contact 2 is connected with the negative electrode of diode D2 and the collector electrode c of triode Q2 respectively, and contact 3 is connected with power supply VCC; Battery pack A and battery pack B are in parallel, and their positive pole links together after being connected in series respectively the normally opened contact of relay K M1 and relay K M2, then is connected in series with the power consumption equipment of electric motor car.
Preferably, described triode Q1 and Q2 are 8550PNP type triode.
Preferably, described single-chip microcomputer is AT89C52 single-chip microcomputer.
Operation principle of the present invention is: the P0.1 pin of single-chip microcomputer is accepted the signal that controller end is sent, after, according to signal, determine to connect battery pack A or battery pack B, if the tangible battery pack A of signal is finished and sends after electricity, single-chip microcomputer sends signal by pin P1.7 to the base stage b of triode Q2, and triode Q2 conducting is turn-offed Q1 by P1.6 pin simultaneously, after Q2 conducting, relay coil KM2 energising, its normally opened contact KM2 is closed, and battery pack B starts power supply.By single-pole double-throw switch (SPDT) S1 and S2, can not pass through automatic control circuit, directly the conversion of battery pack is used and controlled, if connect battery pack A by single-pole double-throw switch (SPDT) S1, the disconnecting link of single-pole double-throw switch (SPDT) S2 is put sky, otherwise the disconnecting link of single-pole double-throw switch (SPDT) S1 is put sky; Under auto transformation mode, when two Battery pack groups there all are not electricity, two switch S 1 and S2 all can be pressed, at this moment, battery pack A and B are in parallel to be used, and also can make electric motor car continuation of the journey a period of time.
The above is the preferred embodiment of the present invention, for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, and these improvements and modifications are also regarded as protection scope of the present invention.
Claims (3)
1. a duplicate supply electric vehicle power sources commutation circuit, it is characterized in that, it comprises a single-chip microcomputer, relay K M1, relay K M2, resistance R 9, resistance R 10, single-pole double-throw switch (SPDT) S1, single-pole double-throw switch (SPDT) S2, triode Q1, triode Q2, diode D1 and diode D2; After an output pin series resistance R9 of described single-chip microcomputer, be connected with the base stage b of triode Q1, at the reverse series diode D1 of the collector electrode c of triode Q1, relay coil KM1 is in parallel with diode D1; After another output pin series resistance R10 of described single-chip microcomputer, be connected with the base stage b of triode Q2, at the reverse series diode D2 of the collector electrode c of triode Q2, relay coil KM2 is in parallel with diode D2; The contact 1 of described single-pole double-throw switch (SPDT) S1 is connected with the input of relay K M1, and its contact 2 is connected with the negative electrode of diode D1 and the collector electrode c of triode Q1 respectively, and contact 3 is connected with power supply VCC; The contact 1 of described single-pole double-throw switch (SPDT) S2 is connected with the input of relay K M2, and its contact 2 is connected with the negative electrode of diode D2 and the collector electrode c of triode Q2 respectively, and contact 3 is connected with power supply VCC; Battery pack A and battery pack B are in parallel, and their positive pole links together after being connected in series respectively the normally opened contact of relay K M1 and relay K M2, then is connected in series with the power consumption equipment of electric motor car.
2. duplicate supply electric vehicle power sources commutation circuit according to claim 1, is characterized in that, described triode Q1 and Q2 are 8550PNP type triode.
3. duplicate supply electric vehicle power sources commutation circuit according to claim 1, is characterized in that, described single-chip microcomputer is AT89C52 single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310525263.XA CN103532225A (en) | 2013-10-31 | 2013-10-31 | Power switching circuit of dual-power electric car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310525263.XA CN103532225A (en) | 2013-10-31 | 2013-10-31 | Power switching circuit of dual-power electric car |
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| CN103532225A true CN103532225A (en) | 2014-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310525263.XA Pending CN103532225A (en) | 2013-10-31 | 2013-10-31 | Power switching circuit of dual-power electric car |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110843605A (en) * | 2019-11-17 | 2020-02-28 | 鲨湾科技(上海)有限公司 | Power supply switching system, switching method of power supply circuit and electric vehicle |
| WO2023082031A1 (en) * | 2021-11-12 | 2023-05-19 | 刘待 | Portable battery pack |
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| US5744876A (en) * | 1994-09-30 | 1998-04-28 | Wnf-1 | Capacitive backup power source for electromechanical actuator |
| CN1913288A (en) * | 2006-08-01 | 2007-02-14 | 陈年忠 | Vehicle permanent magnet generator |
| CN201063457Y (en) * | 2007-06-22 | 2008-05-21 | 中通客车控股股份有限公司 | Emergent controller for vehicle |
| CN202111524U (en) * | 2011-06-23 | 2012-01-11 | 北京联动天翼科技有限公司 | Switching apparatus of ac and dc power supply |
| CN103187791A (en) * | 2013-04-01 | 2013-07-03 | 谷润雨 | Vehicle emergency power conversion system |
| CN203537055U (en) * | 2013-10-31 | 2014-04-09 | 济南宏昌车辆有限公司 | Double-power supply electric vehicle power switching circuit |
-
2013
- 2013-10-31 CN CN201310525263.XA patent/CN103532225A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5744876A (en) * | 1994-09-30 | 1998-04-28 | Wnf-1 | Capacitive backup power source for electromechanical actuator |
| CN1913288A (en) * | 2006-08-01 | 2007-02-14 | 陈年忠 | Vehicle permanent magnet generator |
| CN201063457Y (en) * | 2007-06-22 | 2008-05-21 | 中通客车控股股份有限公司 | Emergent controller for vehicle |
| CN202111524U (en) * | 2011-06-23 | 2012-01-11 | 北京联动天翼科技有限公司 | Switching apparatus of ac and dc power supply |
| CN103187791A (en) * | 2013-04-01 | 2013-07-03 | 谷润雨 | Vehicle emergency power conversion system |
| CN203537055U (en) * | 2013-10-31 | 2014-04-09 | 济南宏昌车辆有限公司 | Double-power supply electric vehicle power switching circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110843605A (en) * | 2019-11-17 | 2020-02-28 | 鲨湾科技(上海)有限公司 | Power supply switching system, switching method of power supply circuit and electric vehicle |
| WO2023082031A1 (en) * | 2021-11-12 | 2023-05-19 | 刘待 | Portable battery pack |
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Application publication date: 20140122 |