CN102555830A - Automobile power supply system based on double energy storage units and automobile power supply control method - Google Patents
Automobile power supply system based on double energy storage units and automobile power supply control method Download PDFInfo
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- CN102555830A CN102555830A CN2010106202066A CN201010620206A CN102555830A CN 102555830 A CN102555830 A CN 102555830A CN 2010106202066 A CN2010106202066 A CN 2010106202066A CN 201010620206 A CN201010620206 A CN 201010620206A CN 102555830 A CN102555830 A CN 102555830A
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
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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
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Abstract
The invention relates to the renewable energy source technology, in particular to an automobile power supply system based on double energy storage units and an automobile power supply control method. According to the invention, the automobile power supply system based on double energy storage units comprise a solar cell unit, a first energy storage unit, a second energy storage unit and a power supply management unit, wherein the power supply management unit is connected with the solar cell unit, the first energy storage unit, the second energy storage unit and an automobile electricity consumption load; and the power supply management unit distributes energy from the solar cell unit among the first energy storage unit, the second energy storage unit and the automobile electricity consumption load according to the residual power amount of the first energy storage unit and the second energy storage unit to ensure that the worse getting degrees of the performance of the first energy storage unit and the second energy storage unit are almost consistent. According to the embodiment of the invention, because the relationship between the residual power amounts of the double energy storage units is considered when an energy storage strategy is determined, the service life of the energy storage unit is almost kept consistent.
Description
Technical field
The present invention relates to renewable energy technologies, particularly a kind of automobile power supply system and automobile method for controlling power supply based on the double-energy storage unit.
Background technology
Resource-constrained, with serious pollution traditional fossil fuel energy reduce day by day, so resource regenerative resource unlimited, clean becomes the focus that people pay close attention to.Wherein solar power is as a kind of emerging green energy resource, and is never exhausted, pollution-free with it, do not receive advantages such as region resource limit, applied just rapidly.According to the photovoltaic effect principle, utilizing solar cell is a very important technology with the photovoltaic technology that solar energy is converted into electric energy, can realize human to continuable global energy system transition.Generally believe that in the world in long-term energy strategy, solar energy power generating has prior status in many regenerative resources such as solar energy thermal-power-generating, wind-power electricity generation, ocean power generation, biomass power generation.Expect the year two thousand thirty photovoltaic generation and in the gross generation in the world, will account for 5% to 20%.
Industry has been developed the technology of solar power as the automobile energy source at present; But because solar energy impinges weak strength and instability; Conversion efficiency is low in addition; Therefore the solar cell on the automobile all uses as the energy source that replenishes at present, and car electrics still need depend on the energy storage of the electrical generator and the storage battery of automobile in many cases.Obviously, if can main energy source and the combination use neatly of makeup energy source then can be increased substantially energy use efficiency and reduce environmental pollution.
Summary of the invention
An object of the present invention is to provide a kind of automobile power supply system, the work life that it can improve efficiency of energy utilization and prolong energy-storage units on the whole based on the double-energy storage unit.
Above-mentioned purpose can be realized by following technical proposals.
A kind of automobile power supply system based on the double-energy storage unit comprises:
Solar battery cell;
First energy-storage units;
Second energy-storage units; And
PMU, it is connected with said solar battery cell, said first energy-storage units, said second energy-storage units and automobile electrical load,
Wherein, Said PMU is according to the dump energy of said first energy-storage units and said second energy-storage units, between said first energy-storage units, said second energy-storage units and said automobile electrical load, distributes from the energy of said solar battery cell so that the degree of the degradation of said first and second energy-storage units is consistent basically.
Preferably, in above-mentioned automobile power supply system, said first energy-storage units has identical electric parameter with said second energy-storage units.
Preferably, in above-mentioned automobile power supply system, said PMU comprises:
The first charging adapter circuit that links to each other with said first energy-storage units, the voltage transitions that is used for input is the charging valtage that is suitable for said first energy-storage units;
The second charging adapter circuit that links to each other with said second energy-storage units, the voltage transitions that is used for input is the charging valtage that is suitable for said second energy-storage units;
With the voltage conversion circuit that said automobile electrical load links to each other, the voltage transitions that is used for input is the operating voltage that is suitable for said automobile electrical load;
Controller;
Commutation circuit links to each other with said solar battery cell, said first and second charging adapter circuits, the said voltage conversion circuits and said controller, is used for one or more of under the control of controller realization following operations mode:
A) said solar battery cell is connected to charge to said first energy-storage units with the said first charging adapter circuit; B) said solar cell is connected to charge to said second energy-storage units with the said second charging adapter circuit; C) said solar cell is connected with said voltage conversion circuit with to said automobile electrical electric; D) the said first charging adapter circuit is connected so that said first energy-storage units charges to said second energy-storage units with the said second charging adapter circuit; E) the said second charging adapter circuit is connected so that said second energy-storage units charges to said first energy-storage units with the said first charging adapter circuit; F) said first the charging adapter circuit be connected with said voltage conversion circuit so that said first energy-storage units to said automobile electrical electric; And g) said second the charging adapter circuit be connected with said voltage conversion circuit so that said second energy-storage units to said automobile electrical electric.
Preferably, in above-mentioned automobile power supply system, said controller comprises:
Computer device is used to calculate the dump energy of said first energy-storage units and said second energy-storage units;
With the communicator that said computer device links to each other, be used to obtain the state parameter of first energy-storage units and said second energy-storage units and these state parameters are sent to said computer device; And
Control policy generating apparatus, its generation be used for realizing said operating mode a)-g) one or more order.
Preferably, in above-mentioned automobile power supply system, said control policy generating apparatus generates order according to following manner:
If aviation value and the dump energy of said second energy-storage units of the dump energy of said first energy-storage units in a period of time is positioned at a preset scope in the difference of the aviation value of this section in the time, then:
If the dump energy of said first and second energy-storage units is all more than or equal to preset threshold value, then generate make said commutation circuit realize said operating mode c), f) and order g);
Make said commutation circuit realize said operating mode b if the dump energy of the dump energy of said first energy-storage units said second energy-storage units more than or equal to said threshold value less than said threshold value, then generates) and order f);
If the dump energy of the dump energy of said first energy-storage units said second energy-storage units less than said threshold value is more than or equal to said threshold value, then generate make said commutation circuit realize said operating mode a) and g) order;
If the dump energy of said first and second energy-storage units is all less than said threshold value, then generate make said commutation circuit realize said operating mode a) and b) order.
Preferably, in above-mentioned automobile power supply system, said control policy generating apparatus generates order according to following manner:
If the dump energy of aviation value and said second energy-storage units of the dump energy of said first energy-storage units in a period of time exceeds the upper limit of said preset scope in the difference of the aviation value of this section in the time, then generate make said commutation circuit realize said operating mode b) and order d);
If the dump energy of aviation value and said second energy-storage units of the dump energy of said first energy-storage units in a period of time at the difference of the aviation value of this section in the time lower limit, then generate less than said preset scope make said commutation circuit realize said operating mode a) and e) order.
Preferably, in above-mentioned automobile power supply system, said first energy-storage units and second energy-storage units are storage battery, and said dump energy characterizes with the SOC of said storage battery, and said computer device calculates the SOC of said storage battery according to following manner:
When the electric current that surpasses preset time and said storage battery is less than a preset current value if automobile remains static, then according to the SOC of the said storage battery of computes:
SOC＝η1×[Es+I×(R0+Rr)]+η2
Wherein Es is the voltage of said storage battery, and I is the electric current of said storage battery, and R0 is the ohmic internal resistance of said storage battery, and Rr is the polarization resistance of said storage battery, and η 1 and η 2 are constant;
If automobile is in the electric current of running state or said storage battery more than or equal to said preset current value, then according to the SOC of the said storage battery of computes:
Wherein Δ t is the temperature increase value of said storage battery, and i (x) is the electric current of said storage battery at moment x, and t is that a, b and c are constant from initial time to the current time of experiencing.
Another object of the present invention provides a kind of automobile method for controlling power supply based on the double-energy storage unit, the work life that it can improve efficiency of energy utilization and prolong energy-storage units on the whole.
Above-mentioned purpose can be realized by following technical proposals.
A kind of automobile method for controlling power supply based on the double-energy storage unit, the electric power system of said automobile comprises solar battery cell, first energy-storage units and second energy-storage units, said method comprises the following steps:
Obtain the state parameter of said first energy-storage units and said second energy-storage units;
Calculate the dump energy of said first energy-storage units and said second energy-storage units according to the state parameter that obtains; And
According to the dump energy of said first energy-storage units and said second energy-storage units, between said first energy-storage units, said second energy-storage units and said automobile electrical load, distribute from the energy of said solar battery cell so that the degree of the degradation of said first and second energy-storage units is consistent basically.
Preferably, in above-mentioned automobile method for controlling power supply, said first energy-storage units has identical electric parameter with said second energy-storage units.
Preferably, in above-mentioned automobile method for controlling power supply, between said first energy-storage units, said second energy-storage units and said automobile electrical load, distribute energy from said solar battery cell according to following manner:
If aviation value and the dump energy of said second energy-storage units of the dump energy of said first energy-storage units in a period of time is positioned at a preset scope in the difference of the aviation value of this section in the time, then:
If the dump energy of said first and second energy-storage units all more than or equal to preset threshold value, then makes said solar battery cell, said first energy-storage units and said second energy-storage units to said automobile electrical electric;
If the dump energy of the dump energy of said first energy-storage units said second energy-storage units more than or equal to said threshold value then makes said solar battery cell and said first energy-storage units to said automobile electrical electric less than said threshold value;
If the dump energy of the dump energy of said first energy-storage units said second energy-storage units less than said threshold value then makes said solar battery cell and said second energy-storage units to said automobile electrical electric more than or equal to said threshold value;
If the dump energy of said first and second energy-storage units all less than said threshold value, then makes said solar battery cell supply power to said first and second energy-storage units.
Preferably, in above-mentioned automobile method for controlling power supply, between said first energy-storage units, said second energy-storage units and said automobile electrical load, distribute energy from said solar battery cell according to following manner:
If the dump energy of aviation value and said second energy-storage units of the dump energy of said first energy-storage units in a period of time exceeds the upper limit of said preset scope in the difference of the aviation value of this section in the time, said solar battery cell and said first energy-storage units are charged to said second energy-storage units;
If the dump energy of aviation value and said second energy-storage units of the dump energy of said first energy-storage units in a period of time then makes said solar battery cell and said second energy-storage units charge to said first energy-storage units at the difference of the aviation value of this section in the time lower limit less than said preset scope.
According to embodiments of the invention, solar power is stored in first energy-storage units and second energy-storage units, and can take care of the pence is used for driving bigger load, has improved the ease for use of solar power.Moreover, owing to when decision energy storage strategy, the relation between the dump energy of double-energy storage unit is taken into account, therefore the work life of energy-storage units is consistent basically.
From the following detailed description that combines accompanying drawing, will make above and other objects of the present invention and advantage clear more fully.
Description of drawings
Fig. 1 is the structured flowchart according to the automobile power supply system of one embodiment of the invention.
Fig. 2 is the inner structure scheme drawing of the PMU in the automobile power supply system shown in Figure 1.
Fig. 3 is the inner structure scheme drawing of the controller in the PMU shown in Figure 2.
Fig. 4 is the inner structure scheme drawing of the solar battery cell in the automobile power supply system shown in Figure 1.
Fig. 5 optimizes circuit is controlled adjustment in real time to Working Points of Solar Battery tactful scheme drawing for the horsepower output in the solar battery cell shown in Figure 4.
Fig. 6 is the diagram of circuit according to the automobile method for controlling power supply of another embodiment of the present invention.
The specific embodiment
To specify the present invention according to the accompanying drawing of expression embodiment of the present invention below.
In this manual; " connection " speech is to be understood that between two unit, directly transmitting energy or signal; Perhaps transmit energy or signal indirectly, and alleged signal includes but not limited to the signal that the form with electricity, light and magnetic exists here through one or more Unit the 3rd.
Fig. 1 is the structured flowchart according to the automobile power supply system of one embodiment of the invention.
Referring to Fig. 1, the automobile power supply system that utilizes solar power 10 of present embodiment comprises solar battery cell 100, first energy-storage units 200, second energy-storage units 300 and PMU 400.Solar cell 100 is connected with second energy-storage units 300 with first energy-storage units 200 respectively through PMU 400; Also connect between first energy-storage units 200 and second energy-storage units 300 through PMU 400; In addition, PMU 400 links to each other with automobile electrical load 20 giving automobile electrical load 20 from the energy transport of solar battery cell 100, first energy-storage units 200 and second energy-storage units 300.In Fig. 1; PMU 400 can be according to the state (for example including but not limited to the dump energy of first energy-storage units 200 and second energy-storage units 300 etc.) of first energy-storage units 200 and second energy-storage units 300, according to certain power supply strategy distribute energy between solar battery cell 100, first energy-storage units 200, second energy-storage units 300 and automobile electrical load 20.Concrete power supply allocation strategy will be described in detail in the back.
The usefulness electric load 20 of automobile is construed as the equipment of electrification in the automobile, and it for example includes but not limited to car light, blowing engine, air-conditioning and sound equipment and starter etc.
In the present embodiment, can adopt storage battery or ultracapacitor as first energy-storage units 200 and second energy-storage units 300, and suppose that they have identical or consistent electric parameter.
Fig. 2 is the inner structure scheme drawing of the PMU in the automobile power supply system shown in Figure 1.
Referring to Fig. 2; PMU 400 comprises the first charging adapter circuit 410, the second charging adapter circuit 420, voltage conversion circuit 430, controller 440 and commutation circuit 450; Wherein, Three input end T1, T2 and T3 of commutation circuit 450 respectively with Fig. 1 in solar battery cell 100, the first charging adapter circuit 410 and the second charging adapter circuit 420 link to each other; Three mouth T4, T5 and T6 are connected to the first charging adapter circuit 410, second charging adapter circuit 420 and the voltage conversion circuit 430 respectively, and in addition, the control end T7 of commutation circuit 450 is connected to controller 440.It should be understood that; Among the terminal T1-T7 each can comprise one or more input-output channels; For example the T6 end can be a port that comprises three input-output channels, is respectively applied for the power supply of the power supply of 100 pairs of automobile electrical loads 20 of solar battery cell, 200 pairs of automobile electrical loads 20 of main energy-storage units and the power supply of 300 pairs of automobile electrical loads 20 of secondary energy-storage units.
The first charging adapter circuit 410 links to each other with first energy-storage units 200 among Fig. 1; With the voltage transitions that commutation circuit 450 is provided is the charging valtage that is suitable for first energy-storage units 200, can be the charging valtage that is suitable for second energy-storage units 300 with the voltage transitions of first energy-storage units 200 also on the other hand.The second charging adapter circuit 420 links to each other with second energy-storage units 300 among Fig. 1; Can be the charging valtage that is suitable for second energy-storage units 300 with the voltage transitions that commutation circuit 450 provides, can be the charging valtage that is suitable for first energy-storage units 200 with the voltage transitions of second energy-storage units 300 also on the other hand.Voltage conversion circuit 430 links to each other with automobile electrical load 20 among Fig. 1, can be the operating voltage that is suitable for automobile electrical load 20 with the voltage transitions that commutation circuit 450 provides.
Under the control of controller 440, commutation circuit 450 can realize following arbitrary serviceability:
A) make connection between T1 end and the T4 end, thereby make solar battery cell 100 charge adapter circuit 410 to 200 chargings of first energy-storage units through first.
B) make connection between T1 end and the T5 end, thereby make solar battery cell 100 charge adapter circuit 420 to 300 chargings of second energy-storage units through second.
C) make connection between T1 end and the T6 end, thereby make solar battery cell 100 supply power to automobile electrical load 20 through voltage conversion circuit 430.
D) make T2 end and T5 termination logical, thereby the energy-storage units 200 of winning is charged to second energy-storage units 300 through the first charging adapter circuit 420 and the second charging adapter circuit 410.
E) make T3 end and T4 termination logical, thereby make second energy-storage units 300 warps, the second charging adapter circuit 420 and the first charging adapter circuit 410 to 200 chargings of first energy-storage units.
F) make T2 end and T6 termination logical, thereby the energy-storage units 200 of winning is supplied power to automobile electrical load 20 through the first charging adapter circuit 410 and voltage conversion circuit 430.
G) make T3 end and T6 termination logical, thereby make second energy-storage units 300 supply power to automobile electrical load 20 through the second charging adapter circuit 420 and voltage conversion circuit 430.
It is worthy of note that the aforesaid operations state a)-g) can be compatible, also is that some serviceability can coexist.For example; Serviceability c) thereby and e) can coexist and realize the common power supply of solar battery cell 100 and first energy-storage units 200 to automobile electrical load 20; And for example; Serviceability c), e) thereby and f) can coexist and realize the common power supply of solar battery cell 100, first energy-storage units 200 and second energy-storage units 300 to automobile electrical load 20; For another example, serviceability a) and b) thereby can coexist and realize that solar battery cell 100 charges to first energy-storage units 200 and second energy-storage units 300 simultaneously.
Fig. 3 is the inner structure scheme drawing of the controller in the PMU shown in Figure 2.
Referring to Fig. 3; Controller 440 comprises computer device 441, communicator 442 and control policy generating apparatus 443; Wherein computer device 441 links to each other with control policy generating apparatus 443 with communicator 442, control policy generating apparatus 443 also with Fig. 2 in the control end T7 of commutation circuit 450 link to each other.
In Fig. 3, communicator 442 for example obtains the state parameter (for example including but not limited to temperature, electric current and the voltage etc. of energy-storage units) of first energy-storage units 200 and second energy-storage units 300 and the state parameter that obtains is sent to computer device 441 from the sensor that is connected on the bus.Computer device 441 calculates the dump energy of first energy-storage units 200 and second energy-storage units 300 according to above-mentioned state parameter and the result that will calculate delivers to control policy generating apparatus 443.The mode that relevant calculation device 441 calculates dump energy will be done further description below.
Control policy generating apparatus 443 is cores of controller 440; Be used for generating the control end T7 that orders and export to commutation circuit 450 accordingly, so that the commutation circuit 450 among Fig. 2 realizes during coupled condition recited above a)-g) one or more according to the dump energy of first energy-storage units 200 and second energy-storage units 300.
Following description control strategy generating apparatus 443 generates the concrete mode of order.
The dump energy of aviation value and second energy-storage units 300 of the dump energy of at first investigating first energy-storage units 200 in a period of time the difference of the aviation value of this section in the time whether be positioned at a preset scope (if for example residual circuit characterizes with SOC, then scope can be represented as ± 2%).If the difference of above-mentioned aviation value drops in the preset scope, then can adopt the strategy of following table 1 expression:
Table 1
When the difference of above-mentioned aviation value dropped on outside the preset scope, then the strategy according to tabulation 2 down generated corresponding order.Also promptly, if the difference of this aviation value greater than the upper limit (for example greater than 2%) of preset scope, then makes the solar battery cell 100 and first energy-storage units 200 simultaneously to 300 chargings of second energy-storage units; If this aviation value less than the lower limit (for example less than-2%) of preset scope, then makes the solar battery cell 100 and second energy-storage units 300 simultaneously to 200 chargings of first energy-storage units.
Table 2
Below describe the mode that computer device 441 calculates dump energies, under this mode, suppose that first energy-storage units 200 and second energy-storage units 300 are storage battery, so dump energy characterizes with the SOC of storage battery.
The basic thought of this mode is proposed by the contriver; Main points are at first storage battery to be divided into two states; Be the bigger state of less state of the internal Stability Analysis of Structures and the electric current of flowing through (not only following be called state 1) and internal structural instability or the electric current of flowing through (following but also be called state 2), adopt different algorithms to different state then.
The contriver is through discovering that after automobile remained static above a period of time, the inner structure of storage battery was generally more stable; The contriver also finds; After automobile remains static above a period of time and the electric current of storage battery during less than certain current value (this value can be confirmed and for a storage battery, keeps fixing basically at the battery-operated life period according to experiment), the accuracy of the SOC of the storage battery that calculates with following formula (1) is higher:
SOC＝η1×[Es+I×(R0+Rr)]+η2 (1)
Wherein Es is the voltage of storage battery, and I is the electric current of storage battery, and R0 is the ohmic internal resistance of storage battery, and Rr is the polarization resistance of storage battery, and η 1 and η 2 are constant (can confirm through experiment).
On the other hand, the electric current that is in running state or storage battery when automobile is during more than or equal to above-mentioned current value, and the result's that the contriver finds to be calculated by formula (1) precision can not make us satisfied, and should adopt the SOC of current integration method calculating accumulator this moment.
Because temperature will exert an influence to the SOC of storage battery,, should temperature factor be taken into account therefore in order to obtain accurate result.The contriver is through discovering, following formula (2) can reflect the influence of temperature to the SOC that calculates according to the current integration method preferably:
Wherein Δ t is the temperature increase value of storage battery, and i (x) is the electric current of storage battery at moment x, and t is from initial time to the current time of experiencing, and a, b and c are the constant of confirming according to experiment.
In a word,, judge that at first storage battery is in state 1 or state 2, if be in the former, then utilize the SOC of formula (1) calculating accumulator, otherwise utilize the SOC of formula (2) calculating accumulator according to the aforementioned calculation mode.
It is to be noted; In the present embodiment; Computer device 441 and control policy generating apparatus 443 can be mainly realized (for example operating in the computer program on the general-purpose computing system) with the mode of software; Also can hardware or the mode of firmware realize that these variation patterns all belong to the protection domain of the present invention back accompanying claims.
Fig. 4 is the inner structure scheme drawing of the solar battery cell in the automobile power supply system shown in Figure 1.
As shown in Figure 4, solar battery cell 100 comprises solar cell 110 and the horsepower output optimization circuit 120 that links to each other with the mouth of solar cell.In the present embodiment, the horsepower output horsepower output of optimizing circuit 120 will be sent to the commutation circuit 450 in shown in Figure 2.
In Fig. 4, horsepower output is optimized circuit 120 is realized solar cell 110 through the tracking to the maximum power point of solar cell 110 power Output Optimization.
Fig. 5 controls the tactful scheme drawing of adjustment in real time for the operation point of 120 pairs of solar cells 110 of the optimization circuit of the horsepower output in the solar battery cell 100 shown in Figure 4.In Fig. 5, transverse axis is represented the output voltage U of solar cell 110, and the longitudinal axis is represented the horsepower output P of solar cell 110.As shown in Figure 5; Horsepower output optimize circuit 120 through constantly to the output voltage of solar cell 110 apply disturbance (among Fig. 5 upwards to indicate) and the more current solar cell horsepower output and the horsepower output in last cycle with downward arrow size (in Fig. 5 also be double-type consecutive points in the A-E point (A, B), (B, C), (C; D) and (D; E)), the operation point of solar cell 110 is controlled adjustment in real time, can realize that thus tracking to maximum power point is (under situation shown in Figure 5; Maximum power point is C, and its cooresponding power and voltage are respectively Pm and Um).With the contrast that does not adopt power optimization circuit 120, can improve 30% at least according to the horsepower output of the solar battery cell 100 of present embodiment, under the not enough situation of illumination, even can improve 130%.
Fig. 6 is the diagram of circuit according to the automobile method for controlling power supply of another embodiment of the present invention.
For describing conveniently, suppose that present embodiment is applied to automobile power supply system shown in Figure 1.Referring to Fig. 6, in step 610, obtain the state parameter of first energy-storage units 200 and second energy-storage units 300.This step can be obtained by near the sensor that is installed in these energy-storage units.
Then, in step 620, calculate the dump energy of first energy-storage units and second energy-storage units according to the state parameter that obtains.Though be the account form that example has provided dump energy above, it should be understood that and also can adopt other method to calculate dump energy with the storage battery.
Subsequently, in step 630, calculate dump energy and previous historic records calculates the aviation value of residual circuit in a period of time (for example 1 month or 1 week) of first and second energy- storage units 200 and 300 according to step 620.
Then; In step 640; The dump energy of aviation value and second energy-storage units 300 of the dump energy of judging first energy-storage units 200 in a period of time the difference of the aviation value of this section in the time whether be positioned at a preset scope (if for example residual circuit characterizes with SOC, then scope can be represented as ± 2%).If the difference of above-mentioned aviation value drops in the preset scope, then get into step 650, otherwise get into step 660.
In step 650,, utilize above-mentioned table 1 to select corresponding strategy according to the dump energy of first and second energy-storage units 200 and 300.And in step 660,, utilize above-mentioned table 2 to select corresponding strategy according to the dump energy of first and second energy- storage units 200 and 300.
Because can be under the spirit that does not deviate from essential characteristic of the present invention; With the various forms embodiment of the present invention; Therefore this embodiment is illustrative rather than restrictive, owing to scope of the present invention is defined by accompanying claims, rather than is defined by specification sheets; Therefore fall into the border and the interior all changes of boundary of claim, or the equivalent of this claim border and boundary thereby forgiven by claim.
Claims (12)
1. the automobile power supply system based on the double-energy storage unit is characterized in that, comprising:
Solar battery cell;
First energy-storage units;
Second energy-storage units; And
PMU, it is connected with said solar battery cell, said first energy-storage units, said second energy-storage units and automobile electrical load,
Wherein, Said PMU is according to the dump energy of said first energy-storage units and said second energy-storage units, between said first energy-storage units, said second energy-storage units and said automobile electrical load, distributes from the energy of said solar battery cell so that the degree of the degradation of said first and second energy-storage units is consistent basically.
2. automobile power supply system as claimed in claim 1, wherein, said first energy-storage units has identical electric parameter with said second energy-storage units.
3. automobile power supply system as claimed in claim 2, wherein, said PMU comprises:
The first charging adapter circuit that links to each other with said first energy-storage units, the voltage transitions that is used for input is the charging valtage that is suitable for said first energy-storage units;
The second charging adapter circuit that links to each other with said second energy-storage units, the voltage transitions that is used for input is the charging valtage that is suitable for said second energy-storage units;
With the voltage conversion circuit that said automobile electrical load links to each other, the voltage transitions that is used for input is the operating voltage that is suitable for said automobile electrical load;
Controller;
Commutation circuit links to each other with said solar battery cell, said first and second charging adapter circuits, the said voltage conversion circuits and said controller, is used for one or more of under the control of controller realization following operations mode:
A) said solar battery cell is connected to charge to said first energy-storage units with the said first charging adapter circuit; B) said solar cell is connected to charge to said second energy-storage units with the said second charging adapter circuit; C) said solar cell is connected with said voltage conversion circuit with to said automobile electrical electric; D) the said first charging adapter circuit is connected so that said first energy-storage units charges to said second energy-storage units with the said second charging adapter circuit; E) the said second charging adapter circuit is connected so that said second energy-storage units charges to said first energy-storage units with the said first charging adapter circuit; F) said first the charging adapter circuit be connected with said voltage conversion circuit so that said first energy-storage units to said automobile electrical electric; And g) said second the charging adapter circuit be connected with said voltage conversion circuit so that said second energy-storage units to said automobile electrical electric.
4. automobile power supply system as claimed in claim 3, wherein, said controller comprises:
Computer device is used to calculate the dump energy of said first energy-storage units and said second energy-storage units;
With the communicator that said computer device links to each other, be used to obtain the state parameter of first energy-storage units and said second energy-storage units and these state parameters are sent to said computer device; And
Control policy generating apparatus, its generation be used for realizing said operating mode a)-g) one or more order.
5. automobile power supply system as claimed in claim 4, wherein, said control policy generating apparatus generates order according to following manner:
If aviation value and the dump energy of said second energy-storage units of the dump energy of said first energy-storage units in a period of time is positioned at a preset scope in the difference of the aviation value of this section in the time, then:
If the dump energy of said first and second energy-storage units is all more than or equal to preset threshold value, then generate make said commutation circuit realize said operating mode c), f) and order g);
Make said commutation circuit realize said operating mode b if the dump energy of the dump energy of said first energy-storage units said second energy-storage units more than or equal to said threshold value less than said threshold value, then generates) and order f);
If the dump energy of the dump energy of said first energy-storage units said second energy-storage units less than said threshold value is more than or equal to said threshold value, then generate make said commutation circuit realize said operating mode a) and g) order;
If the dump energy of said first and second energy-storage units is all less than said threshold value, then generate make said commutation circuit realize said operating mode a) and b) order.
6. like claim 4 or 5 described automobile power supply systems, wherein, said control policy generating apparatus generates order according to following manner:
If the dump energy of aviation value and said second energy-storage units of the dump energy of said first energy-storage units in a period of time exceeds the upper limit of said preset scope in the difference of the aviation value of this section in the time, then generate make said commutation circuit realize said operating mode b) and order d);
If the dump energy of aviation value and said second energy-storage units of the dump energy of said first energy-storage units in a period of time at the difference of the aviation value of this section in the time lower limit, then generate less than said preset scope make said commutation circuit realize said operating mode a) with the order of e.
7. automobile power supply system as claimed in claim 4, wherein, said first energy-storage units and second energy-storage units are storage battery, and said dump energy characterizes with the SOC of said storage battery, and said computer device calculates the SOC of said storage battery according to following manner:
When the electric current that surpasses preset time and said storage battery is less than a preset current value if automobile remains static, then according to the SOC of the said storage battery of computes:
SOC＝η1×[Es+I×(R0+Rr)]+η2
Wherein Es is the voltage of said storage battery, and I is the electric current of said storage battery, and R0 is the ohmic internal resistance of said storage battery, and Rr is the polarization resistance of said storage battery, and η 1 and η 2 are constant;
If automobile is in the electric current of running state or said storage battery more than or equal to said preset current value, then according to the SOC of the said storage battery of computes:
Wherein Δ t is the temperature increase value of said storage battery, and i (x) is the electric current of said storage battery at moment x, and t is that a, b and c are constant from initial time to the current time of experiencing.
8. the automobile method for controlling power supply based on the double-energy storage unit is characterized in that, the electric power system of said automobile comprises solar battery cell, first energy-storage units and second energy-storage units, and said method comprises the following steps:
Obtain the state parameter of said first energy-storage units and said second energy-storage units;
Calculate the dump energy of said first energy-storage units and said second energy-storage units according to the state parameter that obtains; And
According to the dump energy of said first energy-storage units and said second energy-storage units, between said first energy-storage units, said second energy-storage units and said automobile electrical load, distribute from the energy of said solar battery cell so that the degree of the degradation of said first and second energy-storage units is consistent basically.
9. automobile method for controlling power supply as claimed in claim 6, wherein, said first energy-storage units has identical electric parameter with said second energy-storage units.
10. automobile method for controlling power supply as claimed in claim 9, wherein, distribute the energy from said solar battery cell according to following manner between said first energy-storage units, said second energy-storage units and said automobile electrical load:
If aviation value and the dump energy of said second energy-storage units of the dump energy of said first energy-storage units in a period of time is positioned at a preset scope in the difference of the aviation value of this section in the time, then:
If the dump energy of said first and second energy-storage units all more than or equal to preset threshold value, then makes said solar battery cell, said first energy-storage units and said second energy-storage units to said automobile electrical electric;
If the dump energy of the dump energy of said first energy-storage units said second energy-storage units more than or equal to said threshold value then makes said solar battery cell and said first energy-storage units to said automobile electrical electric less than said threshold value;
If the dump energy of the dump energy of said first energy-storage units said second energy-storage units less than said threshold value then makes said solar battery cell and said second energy-storage units to said automobile electrical electric more than or equal to said threshold value;
If the dump energy of said first and second energy-storage units all less than said threshold value, then makes said solar battery cell supply power to said first and second energy-storage units.
11. like claim 9 or 10 described automobile method for controlling power supply; Wherein, Between said first energy-storage units, said second energy-storage units and said automobile electrical load, distribute energy according to following manner:, said solar battery cell and said first energy-storage units are charged to said second energy-storage units if the dump energy of aviation value and said second energy-storage units of the dump energy of said first energy-storage units in a period of time exceeds the upper limit of said preset scope in the difference of the aviation value of this section in the time from said solar battery cell;
If the dump energy of aviation value and said second energy-storage units of the dump energy of said first energy-storage units in a period of time then makes said solar battery cell and said second energy-storage units charge to said first energy-storage units at the difference of the aviation value of this section in the time lower limit less than said preset scope.
12. automobile method for controlling power supply as claimed in claim 9; Wherein, Said first energy-storage units and second energy-storage units are storage battery, and said dump energy characterizes with the SOC of said storage battery, and said computer device calculates the SOC of said storage battery according to following manner:
When the electric current that surpasses preset time and said storage battery is less than a preset current value if automobile remains static, then according to the SOC of the said storage battery of computes:
SOC＝η1×[Es+I×(R0+Rr)]+η2
Wherein Es is the voltage of said storage battery, and I is the electric current of said storage battery, and R0 is the ohmic internal resistance of said storage battery, and Rr is the polarization resistance of said storage battery, and η 1 and η 2 are constant;
If automobile is in the electric current of running state or said storage battery more than or equal to said preset current value, then according to the SOC of the said storage battery of computes:
Wherein Δ t is the temperature increase value of said storage battery, and i (x) is the electric current of said storage battery at moment x, and t is that a, b and c are constant from initial time to the current time of experiencing.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018039824A1 (en) * | 2016-08-28 | 2018-03-08 | 刘建林 | Energy dynamic storage method and system for solar cell panel |
| CN108569143A (en) * | 2017-03-14 | 2018-09-25 | 常州星宇车灯股份有限公司 | A kind of double photo-voltaic power supply power supply systems of automobile LED indoor lamp and method |
| CN109193902A (en) * | 2018-10-17 | 2019-01-11 | 威马智慧出行科技（上海）有限公司 | A kind of vehicle electric power supply control system |
| CN110745001A (en) * | 2018-07-24 | 2020-02-04 | 比亚迪股份有限公司 | Energy distribution device and vehicle |
| CN115117996A (en) * | 2022-08-23 | 2022-09-27 | 如果新能源科技(江苏)股份有限公司 | Charging controller, control method of charging controller, and vehicle |
| CN115668686A (en) * | 2022-09-05 | 2023-01-31 | 航霈科技(深圳)有限公司 | Power supply device, method and system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01270705A (en) * | 1988-04-22 | 1989-10-30 | Japan Electron Control Syst Co Ltd | Electric motor car system |
| CN1070290A (en) * | 1991-09-11 | 1993-03-24 | 中国人民解放军54410部队 | Multifunctional controller for solar generating equipment |
| JP2002125303A (en) * | 2000-10-16 | 2002-04-26 | Okamura Kenkyusho:Kk | Power supply for vehicle |
| JP2004221521A (en) * | 2002-11-22 | 2004-08-05 | Shin Kobe Electric Mach Co Ltd | Charging system for electric motor-driven vehicle |
| CN1994780A (en) * | 2006-12-14 | 2007-07-11 | 上海交通大学 | Anti-interference power supply system of unmanned electric automobile |
| CN101262136A (en) * | 2008-04-17 | 2008-09-10 | 武汉维尔仕电子有限公司 | Solar charging and discharging control device and its control method |
| CN101693443A (en) * | 2009-09-28 | 2010-04-14 | 陈昌志 | New-energy electric vehicle |
-
2010
- 2010-12-29 CN CN201010620206.6A patent/CN102555830B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01270705A (en) * | 1988-04-22 | 1989-10-30 | Japan Electron Control Syst Co Ltd | Electric motor car system |
| CN1070290A (en) * | 1991-09-11 | 1993-03-24 | 中国人民解放军54410部队 | Multifunctional controller for solar generating equipment |
| JP2002125303A (en) * | 2000-10-16 | 2002-04-26 | Okamura Kenkyusho:Kk | Power supply for vehicle |
| JP2004221521A (en) * | 2002-11-22 | 2004-08-05 | Shin Kobe Electric Mach Co Ltd | Charging system for electric motor-driven vehicle |
| CN1994780A (en) * | 2006-12-14 | 2007-07-11 | 上海交通大学 | Anti-interference power supply system of unmanned electric automobile |
| CN101262136A (en) * | 2008-04-17 | 2008-09-10 | 武汉维尔仕电子有限公司 | Solar charging and discharging control device and its control method |
| CN101693443A (en) * | 2009-09-28 | 2010-04-14 | 陈昌志 | New-energy electric vehicle |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018039824A1 (en) * | 2016-08-28 | 2018-03-08 | 刘建林 | Energy dynamic storage method and system for solar cell panel |
| CN108569143A (en) * | 2017-03-14 | 2018-09-25 | 常州星宇车灯股份有限公司 | A kind of double photo-voltaic power supply power supply systems of automobile LED indoor lamp and method |
| CN110745001A (en) * | 2018-07-24 | 2020-02-04 | 比亚迪股份有限公司 | Energy distribution device and vehicle |
| CN109193902A (en) * | 2018-10-17 | 2019-01-11 | 威马智慧出行科技（上海）有限公司 | A kind of vehicle electric power supply control system |
| CN115117996A (en) * | 2022-08-23 | 2022-09-27 | 如果新能源科技(江苏)股份有限公司 | Charging controller, control method of charging controller, and vehicle |
| CN115668686A (en) * | 2022-09-05 | 2023-01-31 | 航霈科技(深圳)有限公司 | Power supply device, method and system |
| CN115668686B (en) * | 2022-09-05 | 2024-02-02 | 航霈科技(深圳)有限公司 | Power supply device, method and system |
| WO2024050656A1 (en) * | 2022-09-05 | 2024-03-14 | 航霈科技(深圳)有限公司 | Power supply apparatus, method and system |
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