CN203632293U - Fault emergency control system for storage battery of electric vehicle - Google Patents
Fault emergency control system for storage battery of electric vehicle Download PDFInfo
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- CN203632293U CN203632293U CN201320773202.0U CN201320773202U CN203632293U CN 203632293 U CN203632293 U CN 203632293U CN 201320773202 U CN201320773202 U CN 201320773202U CN 203632293 U CN203632293 U CN 203632293U
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Abstract
The utility model provides a fault emergency control system for the storage battery of an electric vehicle, which at least comprises a battery pack composed of a plurality of storage battery units and used for supplying power to the motor of the electric vehicle, a storage battery detection unit used for detecting the voltage and the current of each storage battery unit, a switch unit used for serially connecting the rest storage battery units with one another when one or more storage battery units break down, a main output switch, a control unit ECU used for receiving the output signal of the detection unit and controlling the operations of both the switch unit and the main output switch according to the signal, and a voltage conditioning unit connected with the main output end of the battery pack. The main output switch is arranged at the main output end of the battery pack and is connected with the input end of the motor. The output end of the voltage conditioning unit is electrically connected with the input end of the motor. According to the technical scheme of the utility model, due to the adoption of the fault emergency control system, when some of the storage battery units of the battery pack break down, the rest storage battery units, in good condition, can be used for supplying power to the motor so as to ensure the normal operation of the motor of the electric vehicle. In this way, drivers have enough time to handle with faults. Meanwhile, once a vehicle breaks down during the climbing process, the vehicle is enabled to be parked after running to a flat area. Therefore, the occurrence of safety accidents is effectively avoided.
Description
Technical field
The utility model relates to accumulator of electric car control field, relates in particular to a kind of accumulator of electric car fault emergency control system.
Background technology
Electric automobile is take vehicle power as power, drives Vehicle Driving Cycle with motor; 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, and therefore the prospect of electric automobile is extensively had an optimistic view of, and all obtains good development at home and abroad.
For pure electric automobile, in the time that the batteries of the power source as electric automobile breaks down, because batteries can not required voltage and the electric current of output motor, because the motor operating voltage of electric automobile is all specified, therefore, when batteries breaks down, motor often can not be worked; Especially in the time that vehicle is climbed, when climbing midway suddenly batteries break down and cause machine operation to stop, 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 appliance need to be proposed, while can the part secondary battery unit in batteries breaking down, can utilize secondary battery unit that residual state is good to power and guarantee that the motor of electric automobile normally works, can give driver the time of enough reply faults, avoid occurring security incident.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of accumulator of electric car fault emergency control system, while can the part secondary battery unit in batteries breaking down, can utilize secondary battery unit that residual state is good to power and guarantee that the motor of electric automobile normally works, can give driver the time of enough reply faults, avoid occurring security incident.
A kind of accumulator of electric car fault emergency control system that the utility model provides, at least comprise the batteries being formed by single secondary battery unit and power to the motor of electric automobile, also comprise the storage battery detecting unit for detection of the voltage and current of each secondary battery unit, for the switch element of in the situation that wherein one or more secondary battery units of batteries break down, residue secondary battery unit being connected, total output switch, for the control unit ECU that receives the signal of detecting unit output and move according to Signal-controlled switch unit and total output switch and the voltage conditioning unit being connected with total output of batteries, total output that described total output switch is arranged at described batteries is connected with the input of motor, the output of voltage conditioning unit is electrically connected with the input of motor,
Wherein, described batteries is formed by m secondary battery unit serial connection, the number of described switch element is m-1, first switch element input is connected with the positive pole of first secondary battery unit, output is connected with second secondary battery unit negative pole, the input of second switch element is connected with the output of the first switch element and the positive pole of the second secondary battery unit, the output of second switch element is connected with the negative pole of second secondary battery unit, the like, the input of m-1 switch element is connected with the positive pole of m-2 switch element output and m-1 secondary battery unit, the output of m-1 switch element is connected with the negative pole of m secondary battery unit, and the output of all switch elements is also connected with the input of voltage conditioning unit, and, from second switch element, to m-1 switch element only, the anodal connecting path of the input of each switch element and secondary battery unit 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 controllable silicon, and described silicon controlled anode is input, and negative electrode is output, 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 of described DC/AC change-over circuit is connected with total output of the output of switch element and batteries, the output of described voltage regulator circuit is connected with the input 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 the on-off switch of the path between total output and the input of voltage conditioning unit for controlling batteries, and described on-off switch is controlled by control unit ECU.
Further, described detecting unit comprises current detection circuit and voltage detecting circuit.
The beneficial effects of the utility model: emergency control system of the present utility model, while can the part secondary battery unit in batteries breaking down, utilize secondary battery unit that residual state is good to power and guarantee that the motor of electric automobile normally works, can give driver the time of enough reply faults, and make Vehicle Driving Cycle carry out again parking to mild location can break down in climbing time, effectively avoid occurring security incident; And the speed of response of the present utility model is fast, can within the extremely short time, complete the restructuring of batteries supply access, guarantee the safety of driving.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is principle schematic of the present utility model.
Principle schematic when Fig. 2 is the utility model m=5.
Embodiment
Fig. 1 is principle schematic of the present utility model, as shown in the figure, a kind of accumulator of electric car fault emergency control system that the utility model provides, at least comprise the batteries being formed by single secondary battery unit and power to the motor of electric automobile, also comprise the storage battery detecting unit for detection of the voltage and current of each secondary battery unit, for the switch element of in the situation that wherein one or more secondary battery units of batteries break down, residue secondary battery unit being connected, total output switch KZ, for the control unit ECU that receives the signal of detecting unit output and move according to Signal-controlled switch unit and total output switch KZ and the voltage conditioning unit being connected with total output of batteries, total output that described total output switch KZ is arranged at described batteries is connected with the input of motor, the output of voltage conditioning unit is electrically connected with the input of motor,
Wherein, described batteries is formed by m secondary battery unit serial connection, the number of described switch element is m-1, first switch element input is connected with the positive pole of first secondary battery unit, output is connected with second secondary battery unit negative pole, the input of second switch element is connected with the output of the first switch element and the positive pole of the second secondary battery unit, the output of second switch element is connected with the negative pole of second secondary battery unit, the like, the input of m-1 switch element is connected with the positive pole of m-2 switch element output and m-1 secondary battery unit, the output of m-1 switch element is connected with the negative pole of m secondary battery unit, and the output of all switch elements is also connected with the input of voltage conditioning unit, and, from second switch element, to m-1 switch element only, the anodal connecting path of the input of each switch element and secondary battery unit 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 utility model, while can the part secondary battery unit in batteries breaking down, utilize secondary battery unit that residual state is good to power and guarantee that the motor of electric automobile normally works, can give driver the time of enough reply faults, and make Vehicle Driving Cycle carry out again parking to mild location can break down in climbing time, effectively avoid occurring security incident, and the speed of response of the present utility model is fast, can within the extremely short time, complete the restructuring of batteries supply access, guarantee the safety of driving, in Fig. 1, secondary battery unit represents with X, and according to serial connection sequence, because the secondary battery unit of batteries is from left to right connected in series, therefore, secondary battery unit is expressed as X1, X2, X3 ... Xm-1 and Xm, wherein total output of the just very batteries of Xm storage battery.
In the present embodiment, described switch element is controllable silicon, described silicon controlled anode is input, negative electrode is output, 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 normal power supply again of batteries, wherein switch element represents with D in Fig. 1 and Fig. 2, owing to being multiple controllable silicons, 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 of described DC/AC change-over circuit is connected with total output of the output of switch element and batteries, the output of described voltage regulator circuit is connected with the input 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 secondary battery units (number of the secondary battery unit breaking down is less than m), there is voltage conditioning unit voltage to be adjusted to the rated voltage of motor, guarantee the normal work 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 the on-off switch KT of the path between total output and the input of voltage conditioning unit for controlling batteries, and described on-off switch KT is controlled by control unit ECU.
In the present embodiment, described detecting unit comprises current detection circuit and voltage detecting circuit, and voltage detecting circuit voltage available transducer substitutes, and current detection circuit available current transducer 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-off switch KT and total output switch KZ all adopt controllable silicon.
Operation principle of the present utility model:
In order to narrate conveniently, the secondary battery unit of supposing batteries 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,
When normal work, total output switch KZ is normally closed, and each switch element and anti-diverting switch KF and on-off switch KT often open;
In the time of secondary battery unit X1 fault, (show as corresponding with it current detection circuit and/or voltage detecting circuit and detect that the transition of larger fluctuation appears in electric current and/or voltage, or show as current detection circuit and/or voltage detecting circuit is not exported), control unit ECU makes the each switch except master 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.
In the time of secondary battery unit X2 fault, all the other are normal, control unit ECU makes switch element D1, D2 and on-off switch KT conducting (closure), rest switch unit and all anti-diverting switchs all end (disconnection), and total output switch cut-off, secondary battery unit X1, X3, X4 and X5 are composed in series new batteries again, now, DC/AC change-over circuit is controlled by control unit ECU, not receiving key cells D 2 direct voltage outputs, and receiving only the output voltage by on-off switch KT, voltage modulate circuit is started working, to motor M amount of exports fixed working voltage.
In the time of secondary battery unit X3 fault, all the other are normal, control unit ECU makes switch element D2, D3, anti-diverting switch KF1 and on-off switch KT conducting, rest switch unit and the cut-off of anti-diverting switch, and on-off switch KT conducting, total output switch KZ cut-off, secondary battery unit X1, X2, X4 and X5 reformulate batteries, now, DC/AC change-over circuit is controlled by control unit ECU, not receiving key cells D 3 direct voltage outputs, and receive only the output voltage by on-off switch KT, voltage modulate circuit is started working, to motor M amount of exports fixed working voltage.
In the time of secondary battery unit X5 fault, all the other secondary battery units are normal; Switch element D4 and anti-diverting switch KF3 conducting, rest switch unit, total output switch and on-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.
In the time of secondary battery unit 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-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.
In the time of some secondary battery units and the later equal fault of secondary battery unit, such as the equal fault of secondary battery unit 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 secondary battery unit fault is numerous, only describe with comparatively typical example wherein above, for other compound modes, its control principle and above-mentioned compound mode are similar.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model 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 the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (5)
1. an accumulator of electric car fault emergency control system, at least comprise the batteries being formed by single secondary battery unit and power to the motor of electric automobile, it is characterized in that: also comprise the storage battery detecting unit for detection of the voltage and current of each secondary battery unit, for the switch element of in the situation that wherein one or more secondary battery units of batteries break down, residue secondary battery unit being connected, total output switch, for the control unit ECU that receives the signal of detecting unit output and move according to Signal-controlled switch unit and total output switch and the voltage conditioning unit being connected with total output of batteries, total output that described total output switch is arranged at described batteries is connected with the input of motor, the output of voltage conditioning unit is electrically connected with the input of motor,
Wherein, described batteries is formed by m secondary battery unit serial connection, the number of described switch element is m-1, first switch element input is connected with the positive pole of first secondary battery unit, output is connected with second secondary battery unit negative pole, the input of second switch element is connected with the output of the first switch element and the positive pole of the second secondary battery unit, the output of second switch element is connected with the negative pole of second secondary battery unit, the like, the input of m-1 switch element is connected with the positive pole of m-2 switch element output and m-1 secondary battery unit, the output of m-1 switch element is connected with the negative pole of m secondary battery unit, and the output of all switch elements is also connected with the input of voltage conditioning unit, and, from second switch element, to m-1 switch element only, the anodal connecting path of the input of each switch element and secondary battery unit 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 controllable silicon, described silicon controlled anode is input, and negative electrode is output, 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 of described DC/AC change-over circuit is connected with total output of the output of switch element and batteries, the output of described voltage regulator circuit is connected with the input 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 the on-off switch of the path between total output and the input of voltage conditioning unit for controlling batteries, described on-off switch is controlled by control unit ECU.
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320773202.0U CN203632293U (en) | 2013-11-29 | 2013-11-29 | Fault emergency control system for storage battery of electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320773202.0U CN203632293U (en) | 2013-11-29 | 2013-11-29 | Fault emergency control system for storage battery of electric vehicle |
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| Publication Number | Publication Date |
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| CN203632293U true CN203632293U (en) | 2014-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320773202.0U Expired - Fee Related CN203632293U (en) | 2013-11-29 | 2013-11-29 | Fault emergency control system for storage battery of electric vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103612571A (en) * | 2013-11-29 | 2014-03-05 | 东风小康汽车有限公司重庆分公司 | Electric automobile storage battery failure emergency control system |
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2013
- 2013-11-29 CN CN201320773202.0U patent/CN203632293U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103612571A (en) * | 2013-11-29 | 2014-03-05 | 东风小康汽车有限公司重庆分公司 | Electric automobile storage battery failure emergency control system |
| CN103612571B (en) * | 2013-11-29 | 2016-01-20 | 东风小康汽车有限公司重庆分公司 | Electric automobile storage battery failure emergency control system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20191129 |