CN103612571A - Electric automobile storage battery failure emergency control system - Google Patents
Electric automobile storage battery failure emergency control system Download PDFInfo
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- CN103612571A CN103612571A CN201310626110.4A CN201310626110A CN103612571A CN 103612571 A CN103612571 A CN 103612571A CN 201310626110 A CN201310626110 A CN 201310626110A CN 103612571 A CN103612571 A CN 103612571A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The invention provides an electric automobile storage battery failure emergency control system. The electric automobile storage battery failure emergency control system at least comprises a storage battery set, a storage battery detection unit, switch units, a main output switch, a control unit ECU and a voltage regulation unit. The storage battery set is composed of storage battery units and supplies power to a motor of an electric automobile. The storage battery detection unit is used for detecting voltage and current of each storage battery unit. The switch units are used for connected the remaining storage battery units in series when one or more storage battery units in the storage battery set break down. The control unit ECU is used for receiving signals output by the storage battery detection unit and controlling motion of the switch units and the main output switch according to the signals. The voltage regulation unit is connected with a main output end of the storage battery set. The main output switch is arranged at the main output end of the storage battery set and is connected with the input end of the motor. The output end of the voltage regulation unit is electrically connected with the input end of the motor. According to the electric automobile storage battery failure emergency control system, when part of storage battery units in the storage battery set break down, the remaining storage battery units in good condition can be used for supplying power and ensuring normal working of the motor of the electric automobile, a driver can have enough time to deal with the failure, and the driver can drive the electric automobile to run to a flat location to park when the storage battery units break down in the climbing process. Therefore, safety accidents can be effectively avoided.
Description
Technical field
The present invention relates to accumulator of electric car control field, relate in particular to a kind of accumulator of electric car fault emergency control system.
Background technology
Electronlmobil be take vehicle power as power, with motor, drives Vehicle Driving Cycle; As a kind of new-energy automobile, because it is little with respect to traditional fuel-engined vehicle on the impact of environment, and the energy has reproducibility, so the prospect of electronlmobil extensively had an optimistic view of, and all obtains good development at home and abroad.
For pure electric automobile, when the battery pack of the propulsion source as electronlmobil breaks down, because battery pack can not required voltage and the electric current of output motor, because the motor operating voltage of electronlmobil is all specified, therefore, when battery pack breaks down, motor often can not be worked; Especially when vehicle is climbed, when at climbing battery pack et out of order and cause machine operation to stop suddenly midway, and driver can not make Corresponding Countermeasures immediately at instant of failure, thereby brings serious hidden danger for driver and crew's personal safety.
Therefore, a kind of control convenience need to be proposed, while can the part battery cell in battery pack breaking down, can utilize the battery cell that residual state is good power and guarantee that the motor of electronlmobil works, can give driver the time of enough reply faults, avoid occurring safety misadventure.
Summary of the invention
In view of this, the object of this invention is to provide a kind of accumulator of electric car fault emergency control system, while can the part battery cell in battery pack breaking down, can utilize the battery cell that residual state is good power and guarantee that the motor of electronlmobil works, can give driver the time of enough reply faults, avoid occurring safety misadventure.
A kind of accumulator of electric car fault emergency control system provided by the invention, at least comprise the battery pack being formed by single battery cell and power to the motor of electronlmobil, also comprise the storage battery detecting unit for detection of the voltage and current of each battery cell, for the switch element of in the situation that wherein one or more battery cells of battery pack break down, residue battery cell being connected, total output switch, for receiving signal the control unit ECU moving according to Signal-controlled switch unit and total output switch and the voltage conditioning unit being connected with total mouth of battery pack of detecting unit output, total mouth that described total output switch is arranged at described battery pack is connected with the input end of motor, the mouth of voltage conditioning unit is electrically connected to the input end of motor,
Wherein, described battery pack is formed by m battery cell serial connection, the number of described switch element is m-1, first switch element input end is connected with the positive pole of first battery cell, mouth is connected with second battery cell negative pole, the input end of second switch element is connected with the mouth of the first switch element and the positive pole of the second battery cell, the mouth of second switch element is connected with the negative pole of second battery cell, the like, the input end of m-1 switch element is connected with the positive pole of m-2 switch element mouth and m-1 battery cell, the mouth of m-1 switch element is connected with the negative pole of m battery cell, and the mouth of all switch elements is also connected with the input end of voltage conditioning unit, and, from second switch element, to m-1 switch element only, the anodal connecting path of the input end of each switch element and battery cell is provided with anti-diverting switch, the number of described anti-diverting switch is m-2, and anti-diverting switch is controlled by control unit ECU.
Further, described switch element is silicon control, and described silicon controlled anode is input end, and negative electrode is mouth, and silicon controlled control end is connected with control unit ECU;
Further, described voltage conditioning unit comprises and connects successively DC/AC change-over circuit, booster circuit, AC/DC change-over circuit and voltage regulator circuit; The input end of described DC/AC change-over circuit is connected with total mouth of the mouth of switch element and battery pack, the mouth of described voltage regulator circuit is connected with the input end of motor, described DC/AC change-over circuit is also connected with control unit ECU, for according to control command selective reception voltage signal.
Further, described control system also comprises that described on and off switch is controlled by control unit ECU for controlling the on and off switch of the path between total mouth of battery pack and the input end of voltage conditioning unit.
Further, described detecting unit comprises current detection circuit and voltage detecting circuit.
Beneficial effect of the present invention: emergency control system of the present invention, while can the part battery cell in battery pack breaking down, utilize the battery cell that residual state is good power and guarantee that the motor of electronlmobil works, can give driver the time of enough reply faults, and make Vehicle Driving Cycle to mild location, carry out again parking can break down in climbing time, effectively avoid occurring safety misadventure; And the speed of response of the present invention is fast, can within the extremely short time, complete the restructuring of battery pack supply access, guarantee the safety of driving.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is principle schematic of the present invention.
Principle schematic when Fig. 2 is m=5 of the present invention.
The specific embodiment
Fig. 1 is principle schematic of the present invention, as shown in the figure, a kind of accumulator of electric car fault emergency control system provided by the invention, at least comprise the battery pack being formed by single battery cell and power to the motor of electronlmobil, also comprise the storage battery detecting unit for detection of the voltage and current of each battery cell, for the switch element of in the situation that wherein one or more battery cells of battery pack break down, residue battery cell being connected, total output switch KZ, for receiving signal the control unit ECU moving according to Signal-controlled switch unit and total output switch KZ and the voltage conditioning unit being connected with total mouth of battery pack of detecting unit output, total mouth that described total output switch KZ is arranged at described battery pack is connected with the input end of motor, the mouth of voltage conditioning unit is electrically connected to the input end of motor,
Wherein, described battery pack is formed by m battery cell serial connection, the number of described switch element is m-1, first switch element input end is connected with the positive pole of first battery cell, mouth is connected with second battery cell negative pole, the input end of second switch element is connected with the mouth of the first switch element and the positive pole of the second battery cell, the mouth of second switch element is connected with the negative pole of second battery cell, the like, the input end of m-1 switch element is connected with the positive pole of m-2 switch element mouth and m-1 battery cell, the mouth of m-1 switch element is connected with the negative pole of m battery cell, and the mouth of all switch elements is also connected with the input end of voltage conditioning unit, and, from second switch element, to m-1 switch element only, the anodal connecting path of the input end of each switch element and battery cell is provided with anti-diverting switch KF, the number of described anti-diverting switch KF is m-2, and anti-diverting switch is controlled by control unit ECU, emergency control system of the present invention, while can the part battery cell in battery pack breaking down, utilize the battery cell that residual state is good power and guarantee that the motor of electronlmobil works, can give driver the time of enough reply faults, and make Vehicle Driving Cycle to mild location, carry out again parking can break down in climbing time, effectively avoid occurring safety misadventure, and the speed of response of the present invention is fast, can within the extremely short time, complete the restructuring of battery pack supply access, guarantee the safety of driving, in Fig. 1, battery cell represents with X, and according to serial connection sequence, because the battery cell of battery pack is from left to right connected in series, therefore, battery cell is expressed as X1, X2, X3 ... Xm-1 and Xm, wherein total mouth of the just very battery pack of Xm storage battery.
In the present embodiment, described switch element is silicon control, described silicon controlled anode is input end, negative electrode is mouth, and silicon controlled control end is connected with control unit ECU, and the speed of response is fast, can make native system complete at short notice the supply regular power again of battery pack, wherein switch element represents with D in Fig. 1 and Fig. 2, owing to being a plurality of silicon controls, therefore uses respectively D1, D2 ... Dm-1 represents.
In the present embodiment, described voltage conditioning unit comprises and connects successively DC/AC change-over circuit, booster circuit, AC/DC change-over circuit and voltage regulator circuit, the input end of described DC/AC change-over circuit is connected with total mouth of the mouth of switch element and battery pack, the mouth of described voltage regulator circuit is connected with the input end of motor, described DC/AC change-over circuit is also connected with control unit ECU, be used for according to control command selective reception voltage signal, owing to breaking down when wherein one or more battery cells (number of the battery cell breaking down is less than m), there is voltage conditioning unit voltage to be adjusted to the rated voltage of motor, guarantee the normal operation of motor, described voltage regulator circuit carries out filtering on the one hand, prevent that on the other hand overtension from burning out motor.
In the present embodiment, described control system also comprises that described on and off switch KT is controlled by control unit ECU for controlling the on and off switch KT of the path between total mouth of battery pack and the input end of voltage conditioning unit.
In the present embodiment, described detecting unit comprises current detection circuit and voltage detecting circuit, and voltage detecting circuit voltage available sensor substitutes, and current detection circuit available current sensor substitutes; Above-mentioned each circuit and control unit ECU all can adopt existing circuit, and described current collection circuit equates with the number of voltage collection circuit, in order to represent conveniently, all only to have drawn a current collection circuit and voltage collection circuit in Fig. 1 and Fig. 2.
In the present embodiment, described on and off switch KT and total output switch KZ all adopt silicon control.
Principle of work of the present invention:
In order to narrate conveniently, the battery cell of supposing battery pack is 5, i.e. m=5, and therefore, switch element is 4, anti-diverting switch KF is 3; In figure, motor represents with M; As shown in Figure 2,
During normal operation, total output switch KZ is normally closed, and each switch element and anti-diverting switch KF and on and off switch KT often open;
When battery cell X1 fault, (show as with it corresponding current detection circuit and/or voltage detecting circuit and the transition that larger fluctuation appears in electric current and/or voltage detected, or show as the not output of current detection circuit and/or voltage detecting circuit), control unit ECU makes each switch except main supply switch keep original state inconvenience, total output switch KZ cut-off, the work of voltage conditioning unit, to motor M amount of exports fixed working voltage.
When battery cell X2 fault, all the other are normal, control unit ECU makes switch element D1, D2 and on and off switch KT conducting (closure), rest switch unit and all anti-diverting switchs all end (disconnection), and total output switch cut-off, battery cell X1, X3, X4 and X5 are composed in series new battery pack again, now, DC/AC change-over circuit is controlled by control unit ECU, receiving key cells D 2 direct voltage outputs not, and receiving only the output voltage by and off switch KT, voltage modulate circuit is started working, to motor M amount of exports fixed working voltage.
When battery cell X3 fault, all the other are normal, control unit ECU makes switch element D2, D3, anti-diverting switch KF1 and on and off switch KT conducting, rest switch unit and the cut-off of anti-diverting switch, and on and off switch KT conducting, total output switch KZ cut-off, battery cell X1, X2, X4 and X5 reformulate battery pack, now, DC/AC change-over circuit is controlled by control unit ECU, receiving key cells D 3 direct voltage outputs not, and receive only the output voltage by and off switch KT, voltage modulate circuit is started working, to motor M amount of exports fixed working voltage.
When battery cell X5 fault, all the other battery cells are normal; Switch element D4 and anti-diverting switch KF3 conducting, rest switch unit, total output switch and on and off switch cut-off, DC/AC change-over circuit is receiving key cells D 4 output voltages under control unit ECU controls, and voltage modulate circuit is started working.
When battery cell X2 and X4 fault, switch element D1 is to the equal conducting of switch element D4, anti-diverting switch KF2 conducting, all the other cut-offs, total output switch KZ cut-off, on and off switch KT conducting, and DC/AC change-over circuit receiving key cells D 4 output voltages not under control unit ECU controls, voltage modulate circuit is started working.
When some battery cells and the later equal fault of battery cell, such as the equal fault of battery cell X3-X5, KF1, D2, D3 and D4 conducting, rest switch all ends, DC/AC change-over circuit is receiving key cells D 4 output voltages under control unit ECU controls, and voltage modulate circuit is started working.
Because the combination of battery cell fault is numerous, only with comparatively typical example wherein, describe above, for other array modes, its control principle and above-mentioned array mode are similar.
Finally explanation is, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (5)
1. an accumulator of electric car fault emergency control system, at least comprise the battery pack being formed by single battery cell and power to the motor of electronlmobil, it is characterized in that: also comprise the storage battery detecting unit for detection of the voltage and current of each battery cell, for the switch element of in the situation that wherein one or more battery cells of battery pack break down, residue battery cell being connected, total output switch, for receiving signal the control unit ECU moving according to Signal-controlled switch unit and total output switch and the voltage conditioning unit being connected with total mouth of battery pack of detecting unit output, total mouth that described total output switch is arranged at described battery pack is connected with the input end of motor, the mouth of voltage conditioning unit is electrically connected to the input end of motor,
Wherein, described battery pack is formed by m battery cell serial connection, the number of described switch element is m-1, first switch element input end is connected with the positive pole of first battery cell, mouth is connected with second battery cell negative pole, the input end of second switch element is connected with the mouth of the first switch element and the positive pole of the second battery cell, the mouth of second switch element is connected with the negative pole of second battery cell, the like, the input end of m-1 switch element is connected with the positive pole of m-2 switch element mouth and m-1 battery cell, the mouth of m-1 switch element is connected with the negative pole of m battery cell, and the mouth of all switch elements is also connected with the input end of voltage conditioning unit, and, from second switch element, to m-1 switch element only, the anodal connecting path of the input end of each switch element and battery cell is provided with anti-diverting switch, the number of described anti-diverting switch is m-2, and anti-diverting switch is controlled by control unit ECU.
2. accumulator of electric car fault emergency control system according to claim 1, is characterized in that: described switch element is silicon control, and described silicon controlled anode is input end, and negative electrode is mouth, and silicon controlled control end is connected with control unit ECU.
3. accumulator of electric car fault emergency control system according to claim 2, is characterized in that: described voltage conditioning unit comprises and connects successively DC/AC change-over circuit, booster circuit, AC/DC change-over circuit and voltage regulator circuit; The input end of described DC/AC change-over circuit is connected with total mouth of the mouth of switch element and battery pack, the mouth of described voltage regulator circuit is connected with the input end of motor, described DC/AC change-over circuit is also connected with control unit ECU, for according to control command selective reception voltage signal.
4. accumulator of electric car fault emergency control system according to claim 3, it is characterized in that: also comprise that described on and off switch is controlled by control unit ECU for controlling the on and off switch of the path between total mouth of battery pack and the input end of voltage conditioning unit.
5. accumulator of electric car fault emergency control system according to claim 4, is characterized in that: described detecting unit comprises current detection circuit and voltage detecting circuit.
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| CN201310626110.4A CN103612571B (en) | 2013-11-29 | 2013-11-29 | Electric automobile storage battery failure emergency control system |
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| CN201310626110.4A CN103612571B (en) | 2013-11-29 | 2013-11-29 | Electric automobile storage battery failure emergency control system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104494461A (en) * | 2014-12-29 | 2015-04-08 | 柳州延龙汽车有限公司 | Emergency starter for electric vehicle |
| CN107757411A (en) * | 2017-11-08 | 2018-03-06 | 刘永红 | A kind of electric automobile with detachable battery pack |
| CN107953781A (en) * | 2016-10-18 | 2018-04-24 | 南京金邦动力科技有限公司 | The accumulator of electric car of one kind of multiple voltage outputs |
| CN109070755A (en) * | 2016-10-05 | 2018-12-21 | 株式会社Lg化学 | Battery protection system and method |
| CN111347891A (en) * | 2018-12-21 | 2020-06-30 | 河南森源重工有限公司 | Electric automobile, driving device and driving system thereof, and power supply control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111347891A (en) * | 2018-12-21 | 2020-06-30 | 河南森源重工有限公司 | Electric automobile, driving device and driving system thereof, and power supply control method |
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| CN103612571B (en) | 2016-01-20 |
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