CN102152733B - Double-voltage composite energy storage method and device for electric or hybrid power vehicle - Google Patents
Double-voltage composite energy storage method and device for electric or hybrid power vehicle Download PDFInfo
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- CN102152733B CN102152733B CN201110087593.6A CN201110087593A CN102152733B CN 102152733 B CN102152733 B CN 102152733B CN 201110087593 A CN201110087593 A CN 201110087593A CN 102152733 B CN102152733 B CN 102152733B
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Abstract
The invention provides a double-voltage composite energy storage method and device for an electric or hybrid power vehicle. An intermediate energy storage system and a switch are additionally arranged on the basis of the original battery energy storage system of the electric or hybrid power vehicle, the battery energy storage system is isolated in the processes of recovering energy and releasing the recovered energy by controlling the switch to open and close, and a temporary storage space is provided by the intermediate energy storage system for the recovered energy so that the energy of the vehicle can still be recovered and released without using a battery and that energy can be maximally recovered to increase the traveling mileage of the vehicle in a purely electric way and simultaneously prolong the service life of the battery. The method and the device provided by the invention are simple in principle, low in implementation cost and high in reliability, increase the utilization rate of energy effectively, save resources and are suitable for popularization.
Description
Technical field
The present invention relates to a kind of electronic or hybrid vehicle energy storage method and device, relate to specifically a kind of electronic or the two voltage composite energy storage methods of Hybrid Vehicle and device.The energy recycling and administration technical field that belongs to system.
Background technology
Along with day by day rare of the energy, going from bad to worse of environment, pure electronic or hybrid vehicle more energy-conservation, more environmental protection arises.Electronic or hybrid vehicle is compared with orthodox car, and maximum difference is that its energy source is electric energy, but not chemical power.Problem electronic or hybrid vehicle large-scale promotion application maximum is battery problems, and due to the restriction of battery technology, the technical barriers such as battery life, energy content of battery recovery are never resolved.Under current battery technology condition, how to improve electronic or hybrid vehicle electric braking energy recycle efficiency, extend pure electronic continual mileage, improve electrokinetic cell and service life the popularization of electronic or hybrid vehicle is had great importance.
At present, electronic or hybrid vehicle is taked single voltage platform closed-centre system more, and these scheme common features are in vehicle operation process, and DC voltage only has a unique magnitude of voltage, lower its shortcoming of surface analysis:
The shortcoming of univoltage closed-centre system platform maximum is the contradiction that cannot solve battery life and pure electronic mode continual mileage, in city bus operating mode or other operating modes of blocking up, braking time is more, if increase pure electronic mode continual mileage, must strengthen electric braking energy and reclaim, but the braking energy of large electric current reclaims, can reduce battery life, and braking energy reclaims, discharges all through closed-centre system transfer, even if reduce electric current, has reduced too battery.
For to prior art vacancy, in order to solve, univoltage closed-centre system energy reclaims and the contradiction of battery life, realize the efficient withdrawal of energy, improve electronic or hybrid vehicle operation ability, the present invention proposes this kind of electronic or the two voltage composite energy storage methods of Hybrid Vehicle and device.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of electronic or the two voltage composite energy storage methods of Hybrid Vehicle and device, on a chassis, use the closed-centre system collaborative work of two kinds of different voltage classs, by increasing an intermediate energy storage system, for the energy reclaiming provides an interim storage space, make vehicle energy reclaim, discharge all without battery, and recuperated energy at utmost, increase the pure electronic mode continual mileage of vehicle, extend battery simultaneously.
The technical solution used in the present invention is: a kind of electronic or two voltage composite energy storage methods of Hybrid Vehicle, it is characterized in that increasing a kind of intermediate energy storage system and switch on the basis of electronic or the original battery energy storage system of hybrid vehicle, described intermediate energy storage system is in parallel with battery energy storage system, and the maximum voltage of intermediate energy storage system is higher than the maximum voltage of battery energy storage system, described switch is arranged between intermediate energy storage system and battery energy storage system, vehicle power taking is connected between intermediate energy storage system and switch, by opening of master cock, closed action, in carrying out the process that energy reclaims and recuperated energy discharges, isolate battery energy storage system, and completed by intermediate energy storage system, energy reclaims and recuperated energy discharges.
The concrete application process of the two voltage composite energy storage methods of the present invention on electronic or hybrid vehicle is: the energy of vehicle reclaims and the release of recuperated energy belongs to short-time energy behavior, when vehicle carries out energy recovery, switch opens, isolation battery energy storage system, by intermediate energy storage system, carry out short-time energy recovery and recuperated energy discharges, now by intermediate energy storage system, vehicle is powered, whole energy reclaims with the process discharging without battery energy storage system; After energy in short-term reclaims and completes with release, switch is closed, connects battery energy storage system, by battery energy storage system, vehicle is powered.
Described intermediate energy storage system can adopt super capacitor energy-storage system or other to have power electronic devices and the device of energy-storage function.
Described switch can adopt the power electronic devices with switching function.
The two voltage composite energy storage devices of a kind of electronic or Hybrid Vehicle that propose according to above-mentioned pair of voltage composite energy storage method, it is characterized in that increasing a kind of super capacitor energy-storage system and a switch on the basis of electronic or the original battery energy storage system of hybrid vehicle, described super capacitor energy-storage system is in parallel with battery energy storage system, and the maximum voltage of super capacitor energy-storage system is higher than the maximum voltage of battery energy storage system, described switch is arranged between intermediate energy storage system and battery energy storage system, the positive pole of switch is connected with battery energy storage system is anodal, vehicle power taking is connected between intermediate energy storage system and switch negative pole.
Described intermediate energy storage system can adopt super capacitor energy-storage system or other to have power electronic devices and the device of energy-storage function.
Described switch can adopt the power electronic devices (as diode, thyristor GTR) with switching function.
The technique effect of obtaining of this device is: establishing super capacitor energy-storage system voltage is V1, and maximum voltage is V1
max, battery energy storage system voltage is V2, maximum voltage is V2
max, and V1
max> V2
max.When vehicle carries out energy recovery, the rapid voltage V2 higher than battery energy storage system of voltage V1 meeting of super capacitor energy-storage system, be V1 > V2, switch cut-off, play the effect of isolation battery energy storage system, battery energy storage system stops, to vehicle power supply, by super capacitor energy-storage system, being carried out energy recovery and the energy of recovery being discharged in electric energy mode, is vehicle power supply; Along with super capacitor energy-storage system is powered to vehicle, V1 reduces rapidly, and while being reduced to V1 < V2, switch conduction, connects battery energy storage system, by battery energy storage system, is that vehicle is powered.
Described intermediate energy storage system can adopt super capacitor energy-storage system or other to have power electronic devices and the device of energy-storage function.
Described switch can replace by diode, thyristor GTR or other power electronic devices with similar switching function.
The present invention, by increasing an intermediate energy storage system and a switch, for the electric energy reclaiming provides an interim storage space, reclaims energy and discharges completely without battery energy storage system, and its good effect is:
One, the method for the invention, by increasing simple circuit and device, has successfully solved the contradiction of energy recovery with battery life, has extended the life-span of battery under the prerequisite that guarantees high efficiente callback energy, has increased vehicle pure motor driving mileage.
Two, according to energy content of battery density, large but power density and life-span, all not as good as the feature of electric capacity, adopt super capacitor as charging energy-storing device to device of the present invention, use diode-isolated battery during charging, have extended battery, and have improved discharge efficiency.
Three, the principle of the invention is simple, and implementation cost is low, and reliability is high, has effectively improved capacity usage ratio, has saved resource, is applicable to promoting the use of.
Accompanying drawing explanation
Fig. 1 is the functional block diagram of the two voltage composite energy storage methods of a kind of electronic or Hybrid Vehicle of the present invention.
Fig. 2 is the functional block diagram of the two voltage composite energy storage devices of a kind of electronic or Hybrid Vehicle of the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, further set forth the present invention.
As shown in Figure 1, a kind of electronic or two voltage composite energy storage methods of Hybrid Vehicle, it is characterized in that increasing a kind of intermediate energy storage system C1 and K switch on the basis of electronic or the original battery energy storage system B1 of hybrid vehicle, described intermediate energy storage system C1 is in parallel with battery energy storage system B1, and the maximum voltage V1 of intermediate energy storage system C1
maxmaximum voltage V2 higher than battery energy storage system B1
maxdescribed K switch is arranged between intermediate energy storage system C1 and battery energy storage system B1, vehicle power taking is connected between intermediate energy storage system C1 and K switch, by the opening of master cock K, closed action, in carrying out the process that energy reclaims and recuperated energy discharges, isolate battery energy storage system B1, and completed by intermediate energy storage system C1, energy reclaims and recuperated energy discharges.
The concrete application implementation method of the two voltage composite energy storage methods of the present invention on electronic or hybrid vehicle is: the energy of vehicle reclaims and the release of recuperated energy belongs to short-time energy behavior, when vehicle carries out energy recovery, K switch is opened, isolation battery energy storage system B1, by intermediate energy storage system C1, carry out short-time energy recovery and recuperated energy discharges, now by intermediate energy storage system C1, vehicle is powered, whole energy reclaims with the process discharging without battery energy storage system B1; After energy in short-term reclaims and completes with release, K switch is closed, connects battery energy storage system B1, and by battery energy storage system, B1 powers to vehicle.
Described intermediate energy storage system C1 can adopt super capacitor energy-storage system or other to have power electronic devices and the device of energy-storage function.
Described K switch can adopt diode, thyristor GTR or other to have the power electronic devices of switching function.
Embodiment mono-
As shown in Figure 2, the two voltage composite energy storage devices of a kind of electronic or Hybrid Vehicle that propose according to above-mentioned pair of voltage composite energy storage method, it is characterized in that increasing a kind of super capacitor energy-storage system C1 and a diode D1 on the basis of electronic or the original battery energy storage system B1 of hybrid vehicle, described super capacitor energy-storage system C1 is in parallel with battery energy storage system B1, and the maximum voltage V1 of super capacitor energy-storage system C1
maxmaximum voltage V2 higher than battery energy storage system B1
max, described diode D1 is arranged between super capacitor energy-storage system C1 and battery energy storage system B1, and the positive pole of diode D1 is connected with the positive pole of battery energy storage system B1, and vehicle power taking is connected between super capacitor energy-storage system and the negative pole of diode D1.
The technique effect of obtaining of this device is: establishing super capacitor energy-storage system C1 voltage is V1, and maximum voltage is V1
max, battery energy storage system B1 voltage is V2, maximum voltage is V2
max, and V1
max> V2
max.When vehicle carries out energy recovery, the rapid voltage V2 higher than battery energy storage system B1 of voltage V1 meeting of super capacitor energy-storage system C1, be V1 > V2, diode D1 cut-off, play the effect of isolation battery energy storage system B1, battery energy storage system B1 stops, to vehicle power supply, by super capacitor energy-storage system C1, being carried out energy recovery and the energy of recovery being discharged in electric energy mode, is vehicle power supply; Along with super capacitor energy-storage system, C1 powers to vehicle, and the voltage V1 of super capacitor energy-storage system C1 reduces rapidly, and while being reduced to V1 < V2, diode D1 conducting, connects battery energy storage system B1, by battery energy storage system B1, is that vehicle is powered.
Described intermediate energy storage system C1 can adopt super capacitor energy-storage system or other to have power electronic devices and the device of energy-storage function.
Described diode D1 can replace by thyristor GTR or other power electronic devices with similar switching function.
The advantage of embodiment mono-is that it adopts diode D1 as switch, utilize the one-way conduction characteristic of diode, can automatically adjust diode operation state according to the size of V1, V2, two voltage composite energy storage systems that battery energy storage system voltage V1 and super capacitor energy-storage system voltage V2 are formed can freely be carried out the power supply of vehicle, voltage transformation is rapid, reliability is high, and need not any additional control circuit.
Above embodiment is only for explanation patent of the present invention; but not to this specially sharp restriction of invention; those skilled in the art; in the situation that do not depart from the spirit of this patent and the various not creative transformations that scope is made, all should be considered as within the protection domain of patent of the present invention.
Claims (2)
1. two voltage composite energy storage methods of a used for electric vehicle, on the basis of the original battery energy storage system of electric-powered automobile, increase a kind of intermediate energy storage system and switch, described intermediate energy storage system is in parallel with battery energy storage system, and the maximum voltage of intermediate energy storage system is higher than the maximum voltage of battery energy storage system, described switch is arranged between intermediate energy storage system and battery energy storage system, vehicle power taking is connected between intermediate energy storage system and switch, by opening of master cock, closed action, in carrying out the process that energy reclaims and recuperated energy discharges, isolate battery energy storage system, and completed by intermediate energy storage system, energy reclaims and recuperated energy discharges, the energy of vehicle reclaims and the release of recuperated energy belongs to short-time energy behavior, when vehicle carries out energy recovery, switch opens, isolation battery energy storage system, by intermediate energy storage system, carry out short-time energy recovery and recuperated energy discharges, now by intermediate energy storage system, vehicle is powered, whole energy reclaims with the process discharging without battery energy storage system, after energy in short-term reclaims and completes with release, switch is closed, connects battery energy storage system, by battery energy storage system, vehicle is powered, it is characterized in that: on the basis of the original battery energy storage system B1 of electric-powered automobile, increase a kind of super capacitor energy-storage system C1 and a diode D1, described super capacitor energy-storage system C1 is in parallel with battery energy storage system B1, and the maximum voltage V1max of super capacitor energy-storage system C1 is higher than the maximum voltage V2max of battery energy storage system B1, described diode D1 is arranged between super capacitor energy-storage system C1 and battery energy storage system B1, the positive pole of diode D1 is connected with the positive pole of battery energy storage system B1, vehicle power taking is connected between super capacitor energy-storage system and the negative pole of diode D1, if super capacitor energy-storage system C1 voltage is V1, maximum voltage is V1max, and battery energy storage system B1 voltage is V2, and maximum voltage is V2max, and V1max > V2max, when vehicle carries out energy recovery, the rapid voltage V2 higher than battery energy storage system B1 of voltage V1 meeting of super capacitor energy-storage system C1, be V1 > V2, diode D1 cut-off, play the effect of isolation battery energy storage system B1, battery energy storage system B1 stops, to vehicle power supply, by super capacitor energy-storage system C1, being carried out energy recovery and the energy of recovery being discharged in electric energy mode, is vehicle power supply, along with super capacitor energy-storage system, C1 powers to vehicle, and the voltage V1 of super capacitor energy-storage system C1 reduces rapidly, and while being reduced to V1 < V2, diode D1 conducting, connects battery energy storage system B1, by battery energy storage system B1, is that vehicle is powered.
2. two voltage composite energy storage devices of a used for electric vehicle, it is characterized in that: on the basis of the original battery energy storage system B1 of electric-powered automobile, increase a kind of super capacitor energy-storage system C1 and a diode D1, described super capacitor energy-storage system C1 is in parallel with battery energy storage system B1, and the maximum voltage V1max of super capacitor energy-storage system C1 is higher than the maximum voltage V2max of battery energy storage system B1, described diode D1 is arranged between super capacitor energy-storage system C1 and battery energy storage system B1, the positive pole of diode D1 is connected with the positive pole of battery energy storage system B1, vehicle power taking is connected between super capacitor energy-storage system and the negative pole of diode D1, if super capacitor energy-storage system C1 voltage is V1, maximum voltage is V1max, and battery energy storage system B1 voltage is V2, and maximum voltage is V2max, and V1max > V2max, when vehicle carries out energy recovery, the rapid voltage V2 higher than battery energy storage system B1 of voltage V1 meeting of super capacitor energy-storage system C1, be V1 > V2, diode D1 cut-off, play the effect of isolation battery energy storage system B1, battery energy storage system B1 stops, to vehicle power supply, by super capacitor energy-storage system C1, being carried out energy recovery and the energy of recovery being discharged in electric energy mode, is vehicle power supply, along with super capacitor energy-storage system, C1 powers to vehicle, and the voltage V1 of super capacitor energy-storage system C1 reduces rapidly, and while being reduced to V1 < V2, diode D1 conducting, connects battery energy storage system B1, by battery energy storage system B1, is that vehicle is powered.
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| CN103786589B (en) * | 2012-10-29 | 2017-03-01 | 武汉英康汇通电气有限公司 | A kind of electric quantity control unit of mixed energy storage system electric motor car and control method |
| CN103786590B (en) * | 2012-10-31 | 2016-08-03 | 武汉英康汇通电气有限公司 | A kind of twin voltage energy-storage system of extended-range electric vehicle |
| CN104659921B (en) * | 2013-11-26 | 2018-09-21 | 北京科易动力科技有限公司 | Automobile-used composite energy storage system |
| CN109450008A (en) * | 2018-09-26 | 2019-03-08 | 同济大学 | A kind of circuit reducing the extension harm of batteries in parallel connection group thermal runaway |
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