CN203840047U - Dual-power-supply coupling device and hybrid electric vehicle thereof - Google Patents
Dual-power-supply coupling device and hybrid electric vehicle thereof Download PDFInfo
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- CN203840047U CN203840047U CN201420231176.3U CN201420231176U CN203840047U CN 203840047 U CN203840047 U CN 203840047U CN 201420231176 U CN201420231176 U CN 201420231176U CN 203840047 U CN203840047 U CN 203840047U
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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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- 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
- Y02T10/72—Electric energy management in electromobility
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Abstract
The utility model discloses a dual-power-supply coupling device comprising storage batteries, state control equipment, charging control equipment, super capacitors and electric equipment. The state control equipment is used for causing a hybrid electric vehicle to be in a static, driving, braking or charging state. The charging control equipment is used for causing the super capacitors to charge the storage batteries when detecting that the hybrid electric vehicle is in a static state, and used for causing the super capacitors and the storage batteries to charge the electric equipment when detecting that the hybrid electric vehicle is in a driving state. The utility model further provides a hybrid electric vehicle comprising the dual-power-supply coupling device. Compared with the existing DC/DC converter, the dual-power-supply coupling device and the hybrid electric vehicle have the beneficial effects of smaller size, simple structure, higher efficiency and lower cost, and the efficiency is very high for special purposes of the hybrid electric vehicle.
Description
Technical field
The utility model relates to electric automobile field, relates in particular to a kind of duplicate supply coupling device and mixed power electric car thereof.
Background technology
Electric automobile comprises pure electric automobile and mixed power electric car, and both all need heavy-duty battery, requires the power of battery strong, and energy storage rate is high.But in fact the power of battery and energy storage rate are the two sides of one group of contradiction, power is strong, will sacrifice energy storage capacity; And the raising of energy storage capacity, also to sacrifice power as cost.Meanwhile, because battery is electrochemical change, its power and efficiency characteristic are all not as super capacitor, and the energy storage rate of super capacitor is also nothing like the battery of electrochemical reaction.Battery and super capacitor are organically combined, be especially used on mixed power electric car, can obtain well the power characteristic of super capacitor, energy storage characteristic that again can fine acquisition battery.
But because the voltage external characteristic on the electric power storage ground of energy storage and the voltage external characteristic of super capacitor compare, cell voltage external characteristic has incomparable rigidity.If directly by application in parallel with super capacitor group battery pack, super capacitor is not brought into play power characteristic at all, and the protection of battery rate charge-discharge also cannot be achieved.What in prior art, conventionally adopt is between two accumulation electrical sources, to increase a DC/DC transducer (bidirectional, dc transducer), the powerful DC/DC transducer of this class, and not only volume is large, complex structure, efficiency is low, simultaneously because components and parts use is many, and cost costliness.
Utility model content
Main purpose of the present utility model is to provide a kind of duplicate supply coupling device, is intended to solve the problem of adopt that DC/DC transducer brings when carrying out voltage transitions between storage battery and super capacitor bulky, complex structure, inefficiency and cost costliness.
For achieving the above object, the duplicate supply coupling device that the utility model provides, comprise storage battery, state controlling equipment, charge control apparatus, super capacitor and power consumption equipment, wherein, described state controlling equipment, be connected with the positive pole of described storage battery, for controlling mixed power electric car in static, driving, braking or charged state; Described charge control apparatus, is connected with power consumption equipment with the positive pole of described status control module, super capacitor, when remaining static to mixed power electric car, controls described super capacitor to described charge in batteries; For detection of to mixed power electric car when the driving condition, control described super capacitor or/and described storage battery to described power consumption equipment power supply; For detection of arriving mixed power electric car in the time driving on-position, control described power consumption equipment and deposit regenerative braking energy in described super capacitor or described storage battery; And for detection of to mixed power electric car when the charged state, control described power consumption equipment and mend electricity to described storage battery.
Preferably, described charge control apparatus comprises resistance, the first switching tube, second switch pipe and control loop, described resistance one end is connected with the collector electrode of described second switch pipe with described state controlling equipment, the other end is connected with the collector electrode of the first switching tube, the base stage of second switch pipe is connected with described control loop, the emitter of the emitter of second switch pipe and described the first switching tube, the positive pole of described control loop and described super capacitor is connected, for detection of remaining static to mixed power electric car and in the time that the difference between the terminal voltage of described storage battery and the terminal voltage of described super capacitor is greater than the threshold voltage of setting, described control loop control the first switching tube conducting, described storage battery is given described super capacitor charging for the first time, and detect that mixed power electric car remains static and the terminal voltage of described storage battery and the terminal voltage of described super capacitor between difference while being less than or equal to the threshold voltage of setting, the conducting of control loop control second switch pipe, described storage battery is given described super capacitor charging for the second time.
Preferably, described charge control apparatus for detection of to mixed power electric car in the time that the terminal voltage of driving condition and super capacitor is more than or equal to the lower voltage limit of setting, described control loop control the first switching tube and the cut-off of second switch pipe, control described super capacitor to described power consumption equipment power supply; Also for detection of to mixed power electric car in the time that the terminal voltage of driving condition and super capacitor is less than the lower voltage limit of setting, described control loop control the first switching tube conducting, described storage battery is given the power supply of described power consumption equipment; And in the time that the difference between the terminal voltage of described storage battery and the terminal voltage of described super capacitor is less than the threshold voltage of setting, the conducting of described control loop control second switch pipe, described storage battery is given described super capacitor charging, until the terminal voltage of described super capacitor and the terminal voltage of described storage battery are rushed mutually.
Preferably, described charge control apparatus also for detection of to mixed power electric car in the time that the terminal voltage of on-position and super capacitor is less than or equal to the upper voltage limit of setting, described control loop control the first switching tube and the cut-off of second switch pipe, described power consumption equipment all deposits regenerative braking energy in described super capacitor; In the time that the terminal voltage of described super capacitor is greater than the upper voltage limit of setting, described control loop control the first switching tube conducting, described power consumption equipment deposits regenerative braking energy in described storage battery.
Preferably, described charge control apparatus, also for detection of arriving mixed power electric car in charged state, when described power consumption equipment is generator or charger, described power consumption equipment mends electricity to described storage battery.
Preferably, described the first switching tube and second switch pipe are IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor).
Preferably, described state controlling equipment comprises contactor or circuit breaker.
Preferably, the quantity of described storage battery is more than two, between each storage battery, adopts and is connected in series.
Preferably, described super capacitor quantity is more than two, between each super capacitor, adopts and is connected in series.
The utility model further provides a kind of mixed power electric car, comprises duplicate supply coupling device.
The duplicate supply coupling device that the utility model provides, comprise storage battery, state controlling equipment, charge control apparatus, super capacitor and power consumption equipment, wherein, described state controlling equipment, be connected with the positive pole of described storage battery, for controlling mixed power electric car in static, driving, braking or charged state; Described charge control apparatus, is connected with power consumption equipment with the positive pole of described status control module, super capacitor, when remaining static to mixed power electric car, controls described super capacitor to described charge in batteries; For detection of to mixed power electric car when the driving condition, control described super capacitor and described storage battery to described power consumption equipment power supply; For detection of arriving mixed power electric car in the time driving on-position, control described power consumption equipment and deposit regenerative braking energy in described super capacitor or described storage battery; And for detection of to mixed power electric car when the charged state, control described power consumption equipment and mend electricity to described storage battery.The utility model with compare with existing DC/DC transducer, achieved beneficial effect is volume-diminished, simple in structure, improved efficiency and cost, and for the special purpose of mixed power electric car, its efficiency is also very high.
Brief description of the drawings
Fig. 1 is the structured flowchart of the utility model duplicate supply coupling device one embodiment;
Fig. 2 is the circuit diagram of the utility model duplicate supply coupling device one embodiment;
Fig. 3 is Fig. 2 equivalent electrical diagram;
Fig. 4 is that the utility model duplicate supply coupling device detects that mixed power electric car remains static and voltage characteristic curve in the time that the difference between the terminal voltage of storage battery and the terminal voltage of super capacitor is greater than the threshold voltage of setting;
Fig. 5 is that the utility model mixed power electric car remains static and current characteristics curve chart in the time that the difference between the terminal voltage of storage battery and the terminal voltage of super capacitor is less than or equal to the threshold voltage of setting;
Fig. 6 is that the utility model mixed power electric car remains static and charge efficiency figure in the time that the difference between the terminal voltage of storage battery and the terminal voltage of super capacitor is greater than the threshold voltage of setting;
Fig. 7 is the utility model mixed power electric car whole voltage characteristic curve while remaining static;
Fig. 8 is the utility model mixed power electric car whole current characteristics curve chart while remaining static.
Realization, functional characteristics and the advantage of utility model object, in connection with embodiment, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of duplicate supply coupling device, with reference to Fig. 1, in one embodiment, the duplicate supply coupling device that this utility model provides, comprise storage battery 10, state controlling equipment 30, charge control apparatus 50, super capacitor 20 and power consumption equipment 40, wherein
Described state controlling equipment 30, is connected with the positive pole of described storage battery 10, for controlling mixed power electric car in static, driving, braking or charged state.
That the motion state of mixed power electric car comprises is static, operation and charged state, wherein, running status comprises again driving and on-position, wherein drive the state for the normal operation of mixed power electric car, the on-position of mixed power electric car refers to lifts gas pedal, but do not depress clutch, the resistance to compression pression that utilizes the compression travel of engine to produce, internal friction and intake and exhaust resistance form braking action to driving wheel, such as on lower abrupt slope or continuously vehicle is changed to a lower gear when descending, carry out the drive manner of regulation speed with this.Because long apply the brakes when descending, can make the temperature of brake block, brake disc sharply raise, the higher braking effect of temperature is poorer, even has the danger of brake failure.Use on-position regulation speed preferably, reduce the braking time of brake block, extend the useful life of braking system, certain, topmost or can improve drive safety, avoid the generation of security incident.
Described charge control apparatus 50, is connected with power consumption equipment 40 with the positive pole of described status control module 30, super capacitor 20, when remaining static to mixed power electric car, controls described super capacitor 20 and charges to described storage battery 10.
Charge control apparatus 50 described in the present embodiment, for detection of remaining static to mixed power electric car and in the time that the difference between the terminal voltage of described storage battery 10 and the terminal voltage of described super capacitor 20 is greater than the threshold voltage Δ V of setting, controls described storage battery 10 and charge to described super capacitor 20 for the first time; And detect that mixed power electric car remains static and the terminal voltage of described storage battery 10 and the terminal voltage of described super capacitor 20 between difference while being less than or equal to the threshold voltage Δ V of setting, control described storage battery 10 and charge to described super capacitor 20 for the second time.
Described charge control apparatus 50 for detection of to mixed power electric car when the driving condition, control described super capacitor 20 or/and described storage battery 10 is powered to described power consumption equipment 40.
Described in the present embodiment charge control apparatus 50 for detection of to mixed power electric car in the time that the terminal voltage of driving condition and super capacitor 20 is more than or equal to the lower voltage limit of setting, control described super capacitor 20 and power to described power consumption equipment 40; Also for detection of to mixed power electric car in the time that the terminal voltage of driving condition and super capacitor 20 is less than the lower voltage limit of setting, control described storage battery 10 to described power consumption equipment power supply; And in the time that the difference between the terminal voltage of described storage battery 10 and the terminal voltage of described super capacitor 20 is less than the threshold voltage of setting, control described storage battery 10 and charge to described super capacitor 20, until the terminal voltage of described super capacitor 20 is rushed mutually with the terminal voltage of described storage battery 10.
Described charge control apparatus 50, for detection of arriving mixed power electric car in the time driving on-position, is controlled described power consumption equipment 40 and is deposited regenerative braking energy in described super capacitor 20 or described storage battery 10.
Described in the present embodiment charge control apparatus 50 also for detection of to mixed power electric car in the time that the terminal voltage of on-position and super capacitor 20 is less than or equal to the upper voltage limit of setting, control described power consumption equipment and all deposit regenerative braking energy in described super capacitor 20; In the time that the terminal voltage of described super capacitor 20 is greater than the upper voltage limit of setting, controls described power consumption equipment 40 and deposit regenerative braking energy in described storage battery 10.
And described charge control apparatus 50 for detection of to mixed power electric car when the charged state, control described power consumption equipment 40 and mend electricity to described storage battery 10.
Described in the present embodiment, charge control apparatus 50 is for detection of arriving mixed power electric car in charged state, and when described power consumption equipment is generator or charger, described power consumption equipment oppositely supplements electric weight to described storage battery 10.
The duplicate supply coupling device that the present embodiment provides, comprise storage battery 10, state controlling equipment 30, charge control apparatus 50, super capacitor 20 and power consumption equipment 40, wherein, described state controlling equipment 30, be connected with the positive pole of described storage battery 10, for controlling mixed power electric car in static, driving, braking or charged state; Described charge control apparatus 50, is connected with power consumption equipment 40 with the positive pole of described status control module 30, super capacitor 20, and when remaining static to mixed power electric car, described super capacitor 20 charges to described storage battery 10; For detection of to mixed power electric car when the driving condition, described super capacitor 20 and described storage battery 10 power to described power consumption equipment 40; For detection of arriving mixed power electric car in the time driving on-position, described power consumption equipment 40 deposits regenerative braking energy in described super capacitor 20 or described storage battery 10; And for detection of to mixed power electric car when the charged state, described power consumption equipment 40 mends electricity to described storage battery 10.Compare with DC/DC transducer, achieved beneficial effect is volume-diminished, simple in structure, improved efficiency and cost, and for the special purpose of mixed power electric car, its efficiency is also very high.
Particularly, as shown in Figure 2, described charge control apparatus 50 comprises resistance R 1, the first switching tube Q1, second switch pipe Q2 and control loop 51, described resistance R 1 one end is connected with the collector electrode of described second switch pipe Q2 with described state controlling equipment 30, the other end is connected with the collector electrode of the first switching tube Q1, the base stage of second switch pipe Q2 is connected with described control loop 51, and the emitter of second switch pipe Q2 is connected with the positive pole of the emitter of described the first switching tube Q1, described control loop 51 and described super capacitor 20.Control loop 51 is for triggering loop, this is common circuit, select different triggering IC elements and IGBT can form different loops, all can in the application of IC element device, find, the charge control apparatus 50 of the present embodiment is for detection of remaining static to mixed power electric car and in the time that the difference between the terminal voltage of described storage battery 10 and the terminal voltage of described super capacitor 20 is greater than the threshold voltage Δ V of setting, control loop 51 is controlled the first switching tube Q1 conducting, and storage battery 10 charges to for the first time described super capacitor 20 by resistance R 1; When detect that mixed power electric car remains static and the terminal voltage of storage battery 10 and the terminal voltage of super capacitor 20 between difference while being less than or equal to the threshold voltage Δ V of setting, control loop 51 is controlled second switch pipe Q2 conducting; Storage battery 10 charges to for the second time super capacitor 20 by resistance R 1.
With further reference to Fig. 2, described charge control apparatus 50 for detection of to mixed power electric car in the time that the terminal voltage of driving condition and super capacitor 20 is more than or equal to the lower voltage limit of setting, described control loop 51 is controlled the first switching tube Q1 and second switch pipe Q2 cut-off, controls described super capacitor 20 and powers to described power consumption equipment 40; Also for detection of to mixed power electric car in the time that the terminal voltage of driving condition and super capacitor 20 is less than the lower voltage limit of setting, described control loop 51 is controlled the first switching tube Q1 conducting, described storage battery 10 powers to described power consumption equipment 40; And in the time that the difference between the terminal voltage of described storage battery 10 and the terminal voltage of described super capacitor 20 is less than the threshold voltage Δ V of setting, described control loop 51 is controlled second switch pipe Q2 conducting, described storage battery 10 charges to described super capacitor 20, until the terminal voltage of super capacitor 20 is rushed mutually with the terminal voltage of storage battery 10.
Described charge control apparatus 30 also for detection of to mixed power electric car in the time that the terminal voltage of on-position and super capacitor is less than or equal to the upper voltage limit of setting, described control loop control the first switching tube and the cut-off of second switch pipe, described power consumption equipment all deposits regenerative braking energy in described super capacitor; In the time that the terminal voltage of described super capacitor is greater than the upper voltage limit of setting, described control loop control the first switching tube conducting, described power consumption equipment deposits regenerative braking energy in described storage battery.
Described duplicate supply coupling device, for detection of arriving mixed power electric car in charged state, when described power consumption equipment is generator or charger, described power consumption equipment mends electricity to described storage battery.
Particularly, described the first switching tube and second switch pipe are IGBT.
The first switching tube Q1 and the second switch pipe Q1 of the present embodiment all adopt IGBT, IGBT combines the advantage of BJT (double pole triode) and MOS (insulating gate type field effect tube), little and the saturation pressure of driving power reduces, and is very suitable for the storage battery of duplicate supply coupling device in mixed power electric car and the control that super capacitor discharges and recharges between the two.
Particularly, described state controlling equipment comprises contactor 31 or circuit breaker.
The state controlling equipment 30 of the present embodiment adopts the disconnection of contactor 31 or circuit breaker or the whole duplicate supply coupling device of Closed control in static, driving, braking or charged state.
Particularly, the quantity of described storage battery 10 is more than two, between each storage battery 10, adopts and is connected in series.The storage battery 10 of the present embodiment adopts this connected mode composition of series connection batteries, very flexible in design, can reach needed rated voltage and electric current with the storage battery of standard 10.For storage battery 10, the method for attachment of series connection is very common.The most frequently used a kind of batteries series system is the use that is together in series of several storage batterys.Note when storage battery 10 uses using with storage battery 10.In the time that series connection is used, select the storage battery 10 that same type and performance are consistent.And note the polarity of storage battery 10 if there is the polarity of a joint storage battery 10 anti-loaded, will reducing the voltage of the storage battery 10 in whole crosstalk pond, instead of increase voltage.Storage battery 10 series connection are used, and capacity is constant, and voltage stack, obtains needed operating voltage.
Particularly, described super capacitor 20 quantity are more than two, between each super capacitor 20, adopt and are connected in series.The capacity of the present embodiment super capacitor 20 is all very large, generally all more than hundreds of farad, several super capacitor 20 series connection are used composition super capacitor group, super capacitor group connecting line is short and thick, circuit D.C. resistance is minimum, it is only milliohm level or lower, be full of in electric situation, be not suitable for dismounting, because be easily short-circuited, burn electrode or connecting line, and should discharge and recharge online, identical or close for guaranteeing the terminal voltage of each super capacitor, optimal method is to install a set of voltage equalizer additional, make the voltage of all super capacitors equal or close by voltage equalizer.
The present embodiment further provides a kind of mixed power electric car, comprises duplicate supply coupling device described above.
The operation principle of the present embodiment duplicate supply coupling device is as follows:
One, initial condition: mixed power electric car remains static
Contactor 31 is in off-state, and control loop 51 is by the first switching tube Q1 in closed condition, and second switch pipe Q2 is in cut-off state.Now, the terminal voltage value of storage battery 10 is V1, and the terminal voltage value of super capacitor 20 is V.
In the time that the difference of the terminal voltage value of storage battery 10 and the terminal voltage value of super capacitor 20 is greater than threshold voltage Δ V (voltage difference that the maximum of the size of Δ V herein during according to storage battery 10 and super capacitor 20 direct short circuit allows sets), contactor 31 closures, and by control loop 51 by the first switching tube Q1 conducting and keep second switch pipe Q2 in cut-off state, storage battery 10, by power resistor R1, charges to super capacitor 20.Its charging voltage, the side pressure of super capacitor 20 electricity is V, as shown in Figure 4, in Fig. 4, show in time 0-t Δ interval, the terminal voltage of super capacitor 10 and the characteristic curve of time, shown in the following formula of size of the terminal voltage of super capacitor 20:
The terminal voltage of super capacitor 20 is:
As shown in Figure 5, in Fig. 5, show in time 0-t Δ interval, the end electric current of super capacitor 10 and the characteristic curve of time, shown in the following formula of size of super capacitor 20 charging currents:
Super capacitor 20 charging currents are:
Can draw from Fig. 4 and Fig. 5, because the resistance of resistance R 1 is relatively large, charging current and charging voltage change comparatively steady, and the time is longer.And maximum current occurs in the t=0 moment, so just can be according to actual conditions, in mixed power electric car mixed running, the minimum V0 that the terminal voltage of super capacitor 10 drops to.This can, in mixed power electric car integrated vehicle control tactics, be fixed as initial value.It according to be exactly electric current at 0 to t Δ during this period of time, storage battery 10 allows maximum discharge current, and the numerical value of time t Δ can be obtained by following formula:
Charging interval:
(wherein: 0≤t≤t Δ)
As shown in Figure 6, Fig. 6 shown at the efficiency of super capacitor 20 charged states and the characteristic curve of time,
Under the state of storage battery 10 short-time pulse electric discharges, resistance R 1 can be very little, and efficiency is very high.
Charge efficiency:
In time t0 to the average charge efficiency of t Δ be:
Because the major function being risen of resistance R 1 is current limliting, and cut-off current is much smaller than the short circuit current of storage battery 10 or ultracapacitor 20, so the resistance R 1 of selecting is much larger than the internal resistance r1 of storage battery 10 and the internal resistance r2 of super capacitor 20.Because the resistance of resistance R 1 is much larger than the internal resistance r1 of storage battery 10, and the internal resistance r2 of super capacitor 20, so the internal resistance in two above Mathematical Modelings is not all considered.Charging interval is from t=0 to t=t Δ).Can reach a conclusion from formula (4) and (5), the time of charging is relevant with resistance R used 1.Charging interval is almost directly proportional to resistance, and resistance is less, and the charging interval is shorter.From formula (4), resistance R 1 resistance is less, and charge efficiency is higher.Under the condition of the transient large current discharge allowing at storage battery 10, resistance value is reduced as far as possible.
A), along with the terminal voltage of super capacitor 20 rises, when the terminal voltage that the terminal voltage of storage battery 10 deducts super capacitor 20 is less than or equal to threshold voltage Δ V, control loop 51 makes second switch pipe Q2 in conducting state.The terminal voltage characteristic of its super capacitor 20 as shown in Figure 7, shown in the following formula of its terminal voltage:
The terminal voltage of super capacitor 20 is:
As shown in Figure 8, in Fig. 8, show in time period 0-T interval, the end electric current of super capacitor 20 and the characteristic curve of time, shown in the following formula of size of super capacitor 20 charging currents:
The charging current of super capacitor 20:
Charging interval from time t Δ to T is:
Charging interval:
(wherein: t Δ≤t≤T)
In time t Δ to the charge efficiency of T be:
Charge efficiency:
In time t Δ to the charge efficiency of T section be:
(R now represents the internal resistance r2 sum of internal resistance r1 and the super capacitor 20 of storage battery 10.Its charging interval is from t Δ to T).Because the internal resistance of storage battery 10 and super capacitor 20 is very little, charge efficiency η 2 approaches 100%
Whole charge efficiency is:
Known by above formula, make good use of the pulse current charge characteristic of storage battery 10 and super capacitor 20, its actual efficiency can reach more than 93%, higher than the efficiency of traditional DC/DC transducer, and control simpler, cost be less than its 1/10th.
Two, running status: the two states that the running status performance of mixed power electric car is dynamical system: driving condition and on-position.The operation criterion of duplicate supply coupling device can show from running status process:
A), driving condition, the now large merit output of power consumption equipment 40 need.In the time driving requirement request, control loop 51 is controlled the first switching tube Q1 and second switch pipe Q2 cut-off, super capacitor 20 provides moment high-power, under the constant situation of power stage, formula (12) is the expression formula of hold time t and its terminal voltage v of its super capacitor group-8 output firm power.
In formula (12), Pt is the power output of super capacitor 20, and C is the capacitance of super capacitor 20, and V0 is the terminal voltage that super capacitor 20 starts the driving condition moment, V is super capacitor 20 in the terminal voltage in t moment, and t is the discharge time of super capacitor 20.
Within the scope of the voltage drop allowing, can calculate in extreme constant power output situation, how long can maintain.Meanwhile, can, according to the condition of road surface of actual cities, best constant power output can be calculated, and the very big part operating mode in this city can be covered.And this moment does not need storage battery 10 that the energy of power is provided.When the terminal voltage of super capacitor 20 drops to lower in limited time (when the lower voltage limit) of setting, this lower voltage limit is according to the lower voltage limit value reference settings of power consumption equipment 40, this is also under the operating mode of only a few), control loop 51 is controlled the first switching tube Q1 conducting, the driving that the energy of storage battery 10 offers power consumption equipment 40 by resistance R 1 is required, until this wheel drive state finishes.And now with state is similar at the beginning, so control loop 51 continues to maintain the first switching tube Q1 conducting conducting, until the difference of the terminal voltage of the terminal voltage of storage battery 10 and super capacitor 20 is less than threshold voltage Δ V.Now, conducting second switch pipe Q2, rushes the terminal voltage of super capacitor 20 and the terminal voltage of storage battery 10 mutually.
B), regenerative braking state:
In order to obtain best braking effect, maximum instantaneous braking feedback power requires to be generally greater than driving power request, and generally speaking, the rate of charge of storage battery 10 is much smaller than electric discharge.Super capacitor 20 does not have this problem.When power consumption equipment 40 sends after energy back braking request instruction, contactor 31 is disconnected, all feedback energies all deposit super capacitor 20 in.
In this state, braking energy, is datum mark (being normal input) from the feedback output end of driving system controller, and almost 100% absorption, far above the absorbability of storage battery.
Under limiting case, i.e. lower long slope.When the terminal voltage of ultracapacitor 20 is risen to upper voltage limit by regenerative braking energy, by contactor 31 conductings, by unnecessary regenerative braking energy distribution accumulators 10.Meanwhile, reduce regenerative braking energy to storage battery 10 to acceptable scope within, when regenerative braking finishes, disconnect contactor 31.In the time that the terminal voltage of super capacitor 20 is less than the terminal voltage of storage battery 10, conducting contactor 31.
Three, charged state
Due within batteries 10 is controlled in the charge-discharge magnification of regulation, the most direct benefit of bringing is exactly, and the reliability of SOC (State of charge, state-of-charge) improves, and allows completely to fill and deeply puts, and the utilance of storage battery 10 improves.In the time that the SOC of storage battery 10 drops to a numerical value, conducting contactor 31, a constant electric current of power consumption equipment 40 (now power consumption equipment 40 is charger or generator) input, accumulators 10 supplements electricity.Due to, SOC is more accurate, in the duplicate supply coupling device of mixed power electric car, can be before recharging power station, by the energy in storage battery 10 use also stay minimum.
These are only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (10)
1. a duplicate supply coupling device, is characterized in that, comprises storage battery, state controlling equipment, charge control apparatus, super capacitor and power consumption equipment, wherein,
Described state controlling equipment, is connected with the positive pole of described storage battery, for controlling mixed power electric car in static, driving, braking or charged state;
Described charge control apparatus, is connected with power consumption equipment with the positive pole of described status control module, super capacitor, when remaining static to mixed power electric car, controls described super capacitor to described charge in batteries;
For detection of to mixed power electric car when the driving condition, control described super capacitor or/and described storage battery to described power consumption equipment power supply;
For detection of arriving mixed power electric car in the time driving on-position, control described power consumption equipment and deposit regenerative braking energy in described super capacitor or described storage battery; And
For detection of to mixed power electric car when the charged state, control described power consumption equipment and mend electricity to described storage battery.
2. duplicate supply coupling device as claimed in claim 1, it is characterized in that, described charge control apparatus comprises resistance, the first switching tube, second switch pipe and control loop, described resistance one end is connected with the collector electrode of described second switch pipe with described state controlling equipment, the other end is connected with the collector electrode of the first switching tube, the base stage of second switch pipe is connected with described control loop, the emitter of the emitter of second switch pipe and described the first switching tube, the positive pole of described control loop and described super capacitor is connected, for detection of remaining static to mixed power electric car and in the time that the difference between the terminal voltage of described storage battery and the terminal voltage of described super capacitor is greater than the threshold voltage of setting, described control loop control the first switching tube conducting, described storage battery is given described super capacitor charging for the first time, and detect that mixed power electric car remains static and the terminal voltage of described storage battery and the terminal voltage of described super capacitor between difference while being less than or equal to the threshold voltage of setting, the conducting of control loop control second switch pipe, described storage battery is given described super capacitor charging for the second time.
3. duplicate supply coupling device as claimed in claim 2, it is characterized in that, described charge control apparatus for detection of to mixed power electric car in the time that the terminal voltage of driving condition and super capacitor is more than or equal to the lower voltage limit of setting, described control loop control the first switching tube and the cut-off of second switch pipe, control described super capacitor to described power consumption equipment power supply; Also for detection of to mixed power electric car in the time that the terminal voltage of driving condition and super capacitor is less than the lower voltage limit of setting, described control loop control the first switching tube conducting, described storage battery is given the power supply of described power consumption equipment; And in the time that the difference between the terminal voltage of described storage battery and the terminal voltage of described super capacitor is less than the threshold voltage of setting, the conducting of described control loop control second switch pipe, described storage battery is given described super capacitor charging, until the terminal voltage of described super capacitor and the terminal voltage of described storage battery are rushed mutually.
4. duplicate supply coupling device as claimed in claim 2, it is characterized in that, described charge control apparatus also for detection of to mixed power electric car in the time that the terminal voltage of on-position and super capacitor is less than or equal to the upper voltage limit of setting, described control loop control the first switching tube and the cut-off of second switch pipe, described power consumption equipment all deposits regenerative braking energy in described super capacitor; In the time that the terminal voltage of described super capacitor is greater than the upper voltage limit of setting, described control loop control the first switching tube conducting, described power consumption equipment deposits regenerative braking energy in described storage battery.
5. duplicate supply coupling device as claimed in claim 2, it is characterized in that, described charge control apparatus is also for detection of arriving mixed power electric car in charged state, and when described power consumption equipment is generator or charger, described power consumption equipment mends electricity to described storage battery.
6. duplicate supply coupling device as claimed in claim 2, is characterized in that, described the first switching tube and second switch pipe are IGBT.
7. duplicate supply coupling device as claimed in claim 1, is characterized in that, described state controlling equipment comprises contactor or circuit breaker.
8. duplicate supply coupling device as claimed in claim 1, is characterized in that, the quantity of described storage battery is more than two, between each storage battery, adopts and is connected in series.
9. duplicate supply coupling device as claimed in claim 1, is characterized in that, described super capacitor quantity is more than two, between each super capacitor, adopts and is connected in series.
10. a mixed power electric car, is characterized in that, comprises the duplicate supply coupling device as described in claim 1 to 9 any one.
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| CN201420231176.3U CN203840047U (en) | 2014-05-07 | 2014-05-07 | Dual-power-supply coupling device and hybrid electric vehicle thereof |
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| CN201420231176.3U CN203840047U (en) | 2014-05-07 | 2014-05-07 | Dual-power-supply coupling device and hybrid electric vehicle thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106314183A (en) * | 2016-09-09 | 2017-01-11 | 西北工业大学 | Double-super-capacitor energy management system and method of electric vehicle |
| CN111092478A (en) * | 2020-03-23 | 2020-05-01 | 腾色智能科技(南京)有限公司 | Power expansion device and method |
| CN111277030A (en) * | 2020-02-27 | 2020-06-12 | 清华大学 | Sponge capacitance energy management method suitable for composite energy storage system |
| CN111845384A (en) * | 2020-07-28 | 2020-10-30 | 浙江凯乐士科技有限公司 | Power supply method and device for logistics equipment and logistics equipment |
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2014
- 2014-05-07 CN CN201420231176.3U patent/CN203840047U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106314183A (en) * | 2016-09-09 | 2017-01-11 | 西北工业大学 | Double-super-capacitor energy management system and method of electric vehicle |
| CN106314183B (en) * | 2016-09-09 | 2019-06-21 | 西北工业大学 | A kind of Control of Electric Vehicles method based on double super capacitor energy management systems |
| CN111277030A (en) * | 2020-02-27 | 2020-06-12 | 清华大学 | Sponge capacitance energy management method suitable for composite energy storage system |
| CN111277030B (en) * | 2020-02-27 | 2021-08-27 | 清华大学 | Sponge capacitance energy management method suitable for composite energy storage system |
| CN111092478A (en) * | 2020-03-23 | 2020-05-01 | 腾色智能科技(南京)有限公司 | Power expansion device and method |
| CN111845384A (en) * | 2020-07-28 | 2020-10-30 | 浙江凯乐士科技有限公司 | Power supply method and device for logistics equipment and logistics equipment |
| CN111845384B (en) * | 2020-07-28 | 2022-04-19 | 浙江凯乐士科技集团股份有限公司 | Power supply method and device for logistics equipment and logistics equipment |
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