CN103522916A - Double power sources switching control system of electric car - Google Patents
Double power sources switching control system of electric car Download PDFInfo
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- CN103522916A CN103522916A CN201310525261.0A CN201310525261A CN103522916A CN 103522916 A CN103522916 A CN 103522916A CN 201310525261 A CN201310525261 A CN 201310525261A CN 103522916 A CN103522916 A CN 103522916A
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- 230000009977 dual effect Effects 0.000 claims description 10
- 239000003990 capacitor Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 230000007547 defect 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
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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Abstract
A double power sources switching control system of an electric car comprises a battery pack A, a battery pack B, a relay KM1, a relay KM2, a direct-current switch power source, a voltage sampling voltage, a voltage comparison device, a battery automobile switching circuit and an electric quantity display device. According to the double power sources switching control system of the electric car, the capacity of each of the two power sources is smaller than that of the large power source of the original electric car. Therefore, the weight of the finished automobile and the designed weight are basically kept unchanged, and the performance of the electric car does not change. When the double power sources switching control system of the electric car is used, one battery pack is used for supplying electricity, and the other battery pack is automatically switched to supply electricity when the currently used battery pack is used up. Accordingly, even though one battery pack goes wrong, the electric car does not drop the anchor outside. Furthermore, the double power sources switching control system of the electric car is provided with a manual switching device. Manual switching can be performed on the battery packs when the automobile switching circuit performs judgment mistakenly.
Description
Technical field
The present invention relates to Vehicle Engineering, is a kind of battery-driven car dual power supply switching control system specifically.
Background technology
Along with the appearance of new energy electric motor vehicle, because it has energy-saving and environmental protection, controls the advantage such as simple, easy to operate, economical and practical and be deeply subject to liking of common people, and progress into common people family.But because battery-driven car industry is in China development or primary stage, battery, automatically controlled and motor technology is also immature, causes battery-driven car to also have very large defect at course continuation mileage and charging duration, to customer, makes troubles.Current battery-driven car adopts a large storage battery power supply, and electric car can only run nearly way, can improve continual mileage, but also can bring a lot of problems if strengthen capacity of cell.First can make complete vehicle weight increase, the stressed increasing in chassis, can have a significant impact main frame intensity; It two is that increase because of complete vehicle weight seems that motor power is not enough, manned or climbing is hard; The defects such as it three is that wear on tyres is fast, direction is heavy, brake difficulty; Its four can increase customer purchase car cost.
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 two groups of power supplys battery-driven car dual power supply switching control system to battery-driven car power supply successively of realizing.
In order to address the above problem, the present invention is by the following technical solutions: a kind of battery-driven car dual power supply switching control system, it is characterized in that, it comprises battery pack A, battery pack B, relay K M1, relay K M2, direct-current switch power supply, voltage sample circuit, voltage comparator, battery automatic switch-over circuit and electric quantity display device, described battery pack A and battery pack B are in parallel, the positive pole of battery pack A and battery pack B links together after being connected in series respectively the open contact of relay K M1 and relay K M2, then is connected in series with the consumer of battery-driven car; The input end of described direct-current switch power supply is directly connected with the both positive and negative polarity of battery pack B with battery pack A, and mouth is connected with electric quantity display device with voltage comparator, voltage sample circuit, battery automatic switch-over circuit respectively; The sampling end of described voltage sample circuit is in parallel with consumer total loop, and mouth is connected with voltage comparator; Described voltage comparator mouth is connected with battery automatic switch-over circuit with electric quantity display device respectively; Two mouths of described battery automatic switch-over circuit are connected with the coil of relay K M2 with relay K M1 respectively.
Further, described battery automatic switch-over circuit comprises a micro controller system, resistance R 9, resistance R 10, aerotron Q1, aerotron Q2, diode D1 and diode D2; After an output pin series resistance R9 of described micro controller system, be connected with the base stage b of aerotron Q1, at the reverse series diode D1 of emitter e of aerotron Q1, the coil of relay K M1 is in parallel with diode D1; After another output pin series resistance R10 of described micro controller system, be connected with the base stage b of aerotron Q2, at the reverse series diode D2 of emitter e of aerotron Q2, relay K M2 coil is in parallel with diode D2.
Further, this battery-driven car dual power supply switching control system also comprises a manual switching device, described manual switching device comprises two single pole double throw switch S1 and S2, the contact 1 of S1 and S2 is connected with the end of incoming cables of the coil of relay K M2 with the coil of relay K M1 respectively, the contact 2 of single pole double throw switch S1 is connected with the negative pole of diode D1 with the collecting electrode c of aerotron Q1 respectively, and its contact 3 is connected with direct-current switch power supply; The contact 2 of single pole double throw switch S2 is connected with the negative pole of diode D2 with the collecting electrode c of aerotron Q2 respectively, and its contact 3 is connected with direct-current switch power supply.
Further, described voltage sample circuit comprises two optocoupler components and parts OC1 ~ OC2, integrated transporting discharging A1, integrated transporting discharging A2, resistance R 1 ~ R8, diode D, capacitor C 1 and capacitor C 2.
Further, on described consumer total loop, be connected in series an overcurrent protective device.
The invention has the beneficial effects as follows: the capacity of two groups of power supplys that it uses is all less than one group of large power supply capacity on original battery-driven car, therefore, weight when complete vehicle weight and design remains unchanged substantially, and the performance of car does not change yet; In use, only with a Battery pack power supply, after used battery electric quantity is finished, automatically switch to another Battery pack power supply, like this, even if there is a Battery pack to go wrong, also can not cast anchor outside; It is also provided with manual switching device, when erroneous judgement behavior appears in automatic switch-over circuit, can carry out manual switchover to battery pack.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is described further:
Fig. 1 is functional block diagram of the present invention;
Fig. 2 is battery automatic switch-over circuit figure of the present invention;
Fig. 3 is voltage sample circuit figure of the present invention.
The specific embodiment
As shown in Figure 1, one embodiment of the present invention comprises battery pack A, battery pack B, relay K M1, relay K M2, direct-current switch power supply, voltage sample circuit, voltage comparator, battery automatic switch-over circuit and electric quantity display device, described battery pack A and battery pack B are in parallel, the positive pole of battery pack A and battery pack B links together after being connected in series respectively the open contact of relay K M1 and relay K M2, then is connected in series with the consumer of battery-driven car; The input end of described direct-current switch power supply is directly connected with the both positive and negative polarity of battery pack B with battery pack A, and mouth is connected with electric quantity display device with voltage comparator, voltage sample circuit, battery automatic switch-over circuit respectively; The sampling end of described voltage sample circuit is in parallel with consumer total loop, and mouth is connected with voltage comparator; Described voltage comparator mouth is connected with battery automatic switch-over circuit with electric quantity display device respectively; Two mouths of described battery automatic switch-over circuit are connected with the coil of relay K M2 with relay K M1 respectively; Described electric quantity display device is current general electric quantity display device, is mainly a Tricolor LED.
As shown in Figure 2, battery automatic switch-over circuit comprises a micro controller system, resistance R 9, resistance R 10, aerotron Q1, aerotron Q2, diode D1 and diode D2; After an output pin series resistance R9 of described micro controller system, be connected with the base stage b of aerotron Q1, at the reverse e series diode of the emitter D1 of aerotron Q1, relay coil KM1 is in parallel with diode D1; After another output pin series resistance R10 of described micro controller system, be connected with the base stage b of aerotron Q2, at the reverse series diode D2 of emitter e of aerotron Q2, the coil of relay K M2 is in parallel with diode D2.In specific embodiment, described micro controller system adopts stc89c51 micro controller system, and its P0.1 pin is connected with the output signal end of voltage comparator, P1.6 pin series resistor R9, P1.7 pin series resistor R10.
Further, it also comprises a manual switching device, manual switching device comprises two single pole double throw switch S1 and S2, the contact 1 of S1 and S2 is connected with the end of incoming cables of the coil of relay K M2 with the coil of relay K M1 respectively, the contact 2 of single pole double throw switch S1 is connected with the negative pole of diode D1 with the collecting electrode c of aerotron Q1 respectively, and its contact 3 is connected with direct-current switch power supply; The contact 2 of single pole double throw switch S2 is connected with the negative pole of diode D2 with the collecting electrode c of aerotron Q2 respectively, and its contact 3 is connected with direct-current switch power supply.Under normal condition, single pole double throw switch S1 and S2 throw at 1 end, if using battery pack A to be judged as by mistake, owe electricity condition, and S1 receives 2 ends, and S2 is placed in midway location.
As shown in Figure 3, described voltage sample circuit comprises two optocoupler components and parts OC1 ~ OC2, integrated transporting discharging A1, integrated transporting discharging A2, resistance R 1 ~ R8, diode D, capacitor C 1 and capacitor C 2, adopt the components and parts such as light-coupled isolation and secondary operation amplifier, realized the high precision of consumer voltage is detected.
In order to prevent that consumer or circuit from occurring that short circuit or excess current cause the damage of equipment or fire etc.; on described consumer total loop, be connected in series an overcurrent protective device; when total loop electric current surpasses after setting value, overcurrent protector cut-off loop, has guaranteed vehicle safety.
Concrete control process is as follows: after chaufeur is got on the bus, start direct-current switch power supply, the micro controller system of battery automatic switch-over circuit, according to the memory of using battery pack last time, sends signal to aerotron Q1 or Q2, thereby to corresponding relay coil power supply, open a battery pack; Voltage sample circuit samples used battery pack at any time, voltage comparator carry out voltage ratio after, to electric quantity display device, send signal, show state of charge; After battery discharges completely, voltage comparator sends signal to battery automatic switch-over circuit, and battery automatic switch-over circuit disconnects current relay coil, connects another relay coil, thereby connects another battery pack.
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 (5)
1. a battery-driven car dual power supply switching control system, it is characterized in that, it comprises battery pack A, battery pack B, relay K M1, relay K M2, direct-current switch power supply, voltage sample circuit, voltage comparator, battery automatic switch-over circuit and electric quantity display device, described battery pack A and battery pack B are in parallel, the positive pole of battery pack A and battery pack B links together after being connected in series respectively the open contact of relay K M1 and relay K M2, then is connected in series with the consumer of battery-driven car; The input end of described direct-current switch power supply is directly connected with the both positive and negative polarity of battery pack B with battery pack A, and mouth is connected with electric quantity display device with voltage comparator, voltage sample circuit, battery automatic switch-over circuit respectively; The sampling end of described voltage sample circuit is in parallel with consumer total loop, and mouth is connected with voltage comparator; Described voltage comparator mouth is connected with battery automatic switch-over circuit with electric quantity display device respectively; Two mouths of described battery automatic switch-over circuit are connected with the coil of relay K M2 with relay K M1 respectively.
2. battery-driven car dual power supply switching control system according to claim 1, is characterized in that, described battery automatic switch-over circuit comprises a micro controller system, resistance R 9, resistance R 10, aerotron Q1, aerotron Q2, diode D1 and diode D2; After an output pin series resistance R9 of described micro controller system, be connected with the base stage b of aerotron Q1, at the reverse series diode D1 of emitter e of aerotron Q1, the coil of relay K M1 is in parallel with diode D1; After another output pin series resistance R10 of described micro controller system, be connected with the base stage b of aerotron Q2, at the reverse series diode D2 of emitter e of aerotron Q2, the coil of relay K M2 is in parallel with diode D2.
3. battery-driven car dual power supply switching control system according to claim 2, it is characterized in that, it also comprises a manual switching device, described manual switching device comprises two single pole double throw switch S1 and S2, the contact 1 of S1 and S2 is connected with the end of incoming cables of the coil of relay K M2 with the coil of relay K M1 respectively, the contact 2 of single pole double throw switch S1 is connected with the negative pole of diode D1 with the collecting electrode c of aerotron Q1 respectively, and its contact 3 is connected with direct-current switch power supply; The contact 2 of single pole double throw switch S2 is connected with the negative pole of diode D2 with the collecting electrode c of aerotron Q2 respectively, and its contact 3 is connected with direct-current switch power supply.
4. battery-driven car dual power supply switching control system according to claim 1, it is characterized in that, described voltage sample circuit comprises optocoupler components and parts OC1, optocoupler components and parts OC2, integrated transporting discharging A1, integrated transporting discharging A2, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, resistance R 8, diode D, capacitor C 1 and capacitor C 2.
5. according to the battery-driven car dual power supply switching control system described in any one in claim 1 to 4, it is characterized in that, on described consumer total loop, be connected in series an overcurrent protective device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310525261.0A CN103522916A (en) | 2013-10-31 | 2013-10-31 | Double power sources switching control system of electric car |
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| CN201310525261.0A CN103522916A (en) | 2013-10-31 | 2013-10-31 | Double power sources switching control system of electric car |
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| CN201310525261.0A Pending CN103522916A (en) | 2013-10-31 | 2013-10-31 | Double power sources switching control system of electric car |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106998097A (en) * | 2016-01-22 | 2017-08-01 | 吉好依轨 | A kind of technology of two battery packs mutual circulation input and output |
| CN107706992A (en) * | 2017-11-06 | 2018-02-16 | 浙江力俭新能源科技有限公司 | A kind of conservation of energy energy storage conversion equipment |
| CN108879892A (en) * | 2018-09-20 | 2018-11-23 | 山东思科赛德矿业安全工程有限公司 | A kind of double cell group automatic switchover power supply system |
| WO2023082031A1 (en) * | 2021-11-12 | 2023-05-19 | 刘待 | Portable battery pack |
| CN117595459A (en) * | 2024-01-17 | 2024-02-23 | 深圳市南霸科技有限公司 | An output voltage switching system and emergency starting power supply |
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| EP0373805A2 (en) * | 1988-12-14 | 1990-06-20 | Texas Instruments Incorporated | Alternator system for automotive vehicles |
| US20040056616A1 (en) * | 2002-08-28 | 2004-03-25 | Sotoshi Honda | Power supply apparatus in electric vehicle |
| CN2619821Y (en) * | 2003-06-03 | 2004-06-09 | 胡东新 | Double battery electric vehicle |
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2013
- 2013-10-31 CN CN201310525261.0A patent/CN103522916A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0373805A2 (en) * | 1988-12-14 | 1990-06-20 | Texas Instruments Incorporated | Alternator system for automotive vehicles |
| US20040056616A1 (en) * | 2002-08-28 | 2004-03-25 | Sotoshi Honda | Power supply apparatus in electric vehicle |
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| CN201497766U (en) * | 2009-09-27 | 2010-06-02 | 哈尔滨理工大学 | Current sensor for realizing voltage sampling for current divider by adopting linear photoelectric coupler |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106998097A (en) * | 2016-01-22 | 2017-08-01 | 吉好依轨 | A kind of technology of two battery packs mutual circulation input and output |
| CN107706992A (en) * | 2017-11-06 | 2018-02-16 | 浙江力俭新能源科技有限公司 | A kind of conservation of energy energy storage conversion equipment |
| CN108879892A (en) * | 2018-09-20 | 2018-11-23 | 山东思科赛德矿业安全工程有限公司 | A kind of double cell group automatic switchover power supply system |
| CN108879892B (en) * | 2018-09-20 | 2024-04-19 | 山东思科赛德矿业安全工程有限公司 | Automatic switching power supply system for double battery packs |
| WO2023082031A1 (en) * | 2021-11-12 | 2023-05-19 | 刘待 | Portable battery pack |
| CN117595459A (en) * | 2024-01-17 | 2024-02-23 | 深圳市南霸科技有限公司 | An output voltage switching system and emergency starting power supply |
| CN117595459B (en) * | 2024-01-17 | 2024-05-28 | 深圳市南霸科技有限公司 | Output voltage switching system and emergency starting power supply |
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Application publication date: 20140122 |