CN101741120A - Charging and discharging control device - Google Patents
Charging and discharging control device Download PDFInfo
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- CN101741120A CN101741120A CN200910222843A CN200910222843A CN101741120A CN 101741120 A CN101741120 A CN 101741120A CN 200910222843 A CN200910222843 A CN 200910222843A CN 200910222843 A CN200910222843 A CN 200910222843A CN 101741120 A CN101741120 A CN 101741120A
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- 238000007600 charging Methods 0.000 title claims abstract description 56
- 238000007599 discharging Methods 0.000 title claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 230000015556 catabolic process Effects 0.000 claims description 67
- 238000006731 degradation reaction Methods 0.000 claims description 67
- 238000012360 testing method Methods 0.000 claims description 37
- 230000001105 regulatory effect Effects 0.000 claims description 17
- 239000002826 coolant Substances 0.000 claims description 2
- 230000033001 locomotion Effects 0.000 claims description 2
- 230000006866 deterioration Effects 0.000 abstract description 28
- 238000001514 detection method Methods 0.000 description 9
- 239000003990 capacitor Substances 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000003068 static effect Effects 0.000 description 6
- 239000012467 final product Substances 0.000 description 4
- 102220465380 NF-kappa-B inhibitor beta_S23A_mutation Human genes 0.000 description 2
- 230000006735 deficit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 102220198146 rs1057519886 Human genes 0.000 description 2
- 102220171488 rs760746448 Human genes 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using 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
- Y02T10/70—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 task of the present invention is to provide a charging and discharging control device according to the deterioration degree of each separated current condenser. The charging and discharging control device controls the charging and discharging of a plurality of electric power storage parts which perform electric power exchanging with electric working element driven by an electric motor. The charging and discharging control device comprises a deterioration degree detecting part for detecting the deterioration degree of each of the plurality of electric power storage parts and comprises an adjustment part for adjusting the cooling degree or the charging degree of at least one of the plurality of electric power storage parts on the basis of a detecting result of the deterioration degree detecting part.
Description
Technical field
The application advocates the priority based on the Japanese patent application of on November 20th, 2008 application 2008-297258 number.The full content of this application is quoted in this specification by reference.
The charge-discharge controller of the electric storage means that the present invention relates to discharge and recharge repeatedly.
Background technology
Electric storage means as secondary cell uses can list the capacitor that electric charge is accumulated or emitted to static behaviour.Capacitor carries out accumulating of electric energy or emits by the repeated charge that requires according to load.
This capacitor is for example as the vehicle or the motor of operating machine etc., for can supply capability between the bigger load of specified output and reclaim electric power, proposes miscellaneous thoughts (for example, with reference to patent documentation 1) in order to seek high capacity.
Patent documentation 1: Japanese kokai publication hei 10-125559 communique
Yet the high capacity of electric storage means is accompanied by maximization, because therefore the limited storage space of the electric storage means that maximizes considers separately electric storage means.
But, under the situation of having separated electric storage means, produce the different situation of separated electric storage means degradation each other according to environment is set.
In this case, if carry out discharging and recharging of separated electric storage means in the lump, then exist the degradation progress electric storage means degradation further progress problem or produce the problem that charge efficiency on the whole descends.
Summary of the invention
Therefore, the objective of the invention is to, provide a kind of each degradation according to separated electric storage means to discharge and recharge control and have the charge-discharge controller that the progress degree of deterioration is carried out the function of equalization.
The charge-discharge controller of an aspect of of the present present invention, carry out the control that discharges and recharges of a plurality of Reserve Power Divisions, this a plurality of Reserve Power Divisions and carried out the exchange of electric power between the electronic duty factor of motorized motions, this charge-discharge controller comprise detect above-mentioned a plurality of Reserve Power Divisions each degradation the degradation test section and regulate the cooling degree of any one at least in above-mentioned a plurality of Reserve Power Division or the adjusting portion of level of charge based on the testing result of above-mentioned degradation test section.
And the driver of the cooling device that above-mentioned adjusting portion also can be by regulating above-mentioned Reserve Power Division is regulated above-mentioned cooling degree.
And the cooling that above-mentioned cooling device also can be mounted in above-mentioned Reserve Power Division is with fan, coolant pump or be installed in Peltier (peltier) element of above-mentioned Reserve Power Division.
And above-mentioned adjusting portion also can be regulated above-mentioned level of charge based on the internal resistance value or the direct capacitance value of above-mentioned a plurality of Reserve Power Divisions.
And above-mentioned adjusting portion also can be under each situation of connecting mutually of above-mentioned a plurality of Reserve Power Divisions, regulates above-mentioned level of charge by regulating at least the higher limit of the charging voltage of the Reserve Power Division of any one.
And above-mentioned adjusting portion also can be under each situation parallel with one another of above-mentioned a plurality of Reserve Power Divisions, regulates above-mentioned level of charge by regulating at least the charging and discharging currents value of the Reserve Power Division of any one.
The invention effect
According to the present invention, can access following peculiar effect, that is, can provide a kind of charge-discharge controller, discharge and recharge control and have the function of the progress degree of deterioration being carried out equalization according to each degradation of separated electric storage means.
Description of drawings
Fig. 1 is expression discharges and recharges the control circuit power of control by the charge-discharge controller of execution mode 1 figure.
Fig. 2 is the figure of the structure of the expression battery 19 that discharged and recharged control by the charge-discharge controller of execution mode 1, and Fig. 2 (a) is whole structure chart, and Fig. 2 (b) is the figure of the circuit structure of expression battery module.
Fig. 3 is the figure that is used for illustrating the measuring principle when the charge-discharge controller of execution mode 1 is measured the degradation of each battery module, be the charging voltage of expression when measuring internal resistance value and direct capacitance value through the time performance plot that changes.
Fig. 4 is the figure that is used for illustrating the measuring principle when the charge-discharge controller of execution mode 1 is measured the degradation of each battery module, Fig. 4 (a) is the concept map of expression based on the determination methods of the degradation of internal resistance value, and Fig. 4 (b) is the concept map of expression based on the determination methods of the degradation of direct capacitance value.
Fig. 5 is the figure of expression based on the processing sequence of the level of charge change processing of the charge-discharge controller of execution mode 1.
To be expression discharge and recharge the figure of the structure of the type of voltage step-up of control and battery by the charge-discharge controller of execution mode 2 to Fig. 6.
Fig. 7 is the figure of expression based on the processing sequence of the level of charge change processing of the charge-discharge controller of execution mode 2.
Fig. 8 is the figure of expression based on the processing sequence of the level of charge change processing of the charge-discharge controller of execution mode 3.
Reference numeral
The 19-battery, 19-1～19-n-battery module, 19A-1～19A-n-motor driven fan, 19B-1～19B-n-battery portion, 19C-1～19C-n-bypass circuit, 19D-1～19D-n-change over switch, 100,100-1～100n-type of voltage step-up, the 101-reactor, 102A-boosts and uses IGBT, 102B-step-down IGBT, 103-power connector end, the 104-lead-out terminal, the 105-capacitor, 106-battery voltage detection portion, 107-battery current test section, the 110-DC bus, 111-DC bus voltage test section, 112-electric driving part, 120-drive control part, 130-1～130-n-module voltage test section, 140-1～140-n-blocks current test section.
Embodiment
Below, the execution mode of having used charge-discharge controller of the present invention is described.
[execution mode 1]
Fig. 1 is expression discharges and recharges the control circuit power of control by the charge-discharge controller of execution mode 1 figure.This control circuit power comprises type of voltage step-up 100, DC bus 110, electric driving part 112 and battery 19.This battery 19 is to comprise the electric storage means of measuring the static capacity composition of charging voltage value by the charge-discharge controller of execution mode 1.
Type of voltage step-up 100 possesses reactor 101, boost with IGBT (Insulated GateBipolar Transistor) 102A, step-down with IGBT102B, be used to connect battery 19 power connector end 103, be used to connect the lead-out terminal 104 of electric driving part 112, be inserted in capacitor 105, battery voltage detection portion 106 and the battery current test section 107 of the level and smooth usefulness of pair of output 104 side by side.
Be connected by DC bus 110 between the lead-out terminal 104 of type of voltage step-up 100 and the electric driving part 112.
Boosting is made of the bipolar transistor that MOSFET (Metal OxideSemiconductor Field Effect Transistor) is assembled in gate portion with IGBT102B with IGBT102A and step-down, is the semiconductor element that can exchange big electric power at a high speed.Boost and drive by applying PWM voltage with IGBT102B from 120 pairs of gate terminals of drive control part with IGBT102A and step-down.In boosting with IGBT102A and step-down usefulness IGBT102B, rectifier cell in parallel is diode 102a and 102b.
At this, boost and undertaken by drive control part 120 with the drive controlling (conversion and control that discharges and recharges) of IGBT102B with IGBT102A and step-down.For this reason, in drive control part 120, detect based on boosting with IGBT102A and step-down the conversion that discharges and recharges with IGBT102B.
In addition, at this, the textual representation of " conversion that discharges and recharges " as by discharge condition to the conversion of charged state, use to the conversion of charged state or discharge condition to the conversion of discharge condition or by the state that discharges and recharges by charged state.
Power connector end 103 and lead-out terminal 104 so long as the terminal that battery 19 and electric driving part 112 can connect get final product.The battery voltage detection portion 106 of joint detection cell voltage between a pair of power connector end 103.The DC bus voltage test section 111 of joint detection DC bus voltage between pair of output 104.
The magnitude of voltage Vm (voltage between terminals) of battery 19 detects in battery voltage detection portion 106, the voltage of DC bus voltage test section 111 detection DC buses 110 (below, DC bus voltage Vdc).
Be connected the load of lead-out terminal 104 and be as long as electric driving part 112 comprises can the Lixing running and the motor of regeneration operating, as this motor, for example can use magnet to be embedded in IPM (the Interior Permanent Magnetic) motor of internal rotor.
Battery current test section 107 comprises the resistor that current detecting is used so long as can detect the testing agency of the value of the electric current that flows through to battery 19 and get final product.This battery current test section 107 detects the current value I that flows through to battery 19.
In addition, in execution mode 1, establish from battery 19 to the current value of the direction of DC bus 110 supplying electric currents to just, establish from DC bus 110 to the current value of the direction of battery 19 supplying electric currents to negative.That is, the current value when battery 19 is discharged just becomes, and the current value when battery 19 is charged becomes negative.
" buck action "
In this type of voltage step-up 100, when boosting DC bus 110, the gate terminal that boosts with IGBT102A is applied PWM voltage, by being parallel to the diode 102b of step-down usefulness IGBT102B, following the induced electromotive force of the ON/OFF of the usefulness IGBT102A that boosts in reactor 101 generations to 110 supplies of DC bus.Thus, DC bus 110 is boosted.
And, when step-down DC bus 110, step-down is applied PWM voltage with the gate terminal of IGBT102B, by step-down IGBT102B, supply with the regenerated electric power that takes place by electric driving part 112 to battery 19 from DC bus 110.Thus, the electric power that is accumulated in DC bus 110 is to battery 19 chargings, and DC bus 110 is by step-down.
Fig. 2 is the figure of the structure of the expression battery 19 that discharged and recharged control by the charge-discharge controller of execution mode 1, and Fig. 2 (a) is whole structure chart, and Fig. 2 (b) is the figure of the circuit structure of expression battery module.
Shown in Fig. 2 (a), in fact comprise battery module 19-1～19-n as a plurality of Reserve Power Divisions as the battery 19 of electric storage means.
Battery module 19-1～19-n (n is the integer more than 2) is all connected, but basket is divided into each battery module can be set in place separately.
Battery module 19-1～19-n comprises a plurality of secondary battery units of mutual series connection.So, battery module 19-1～19-n comprises a plurality of battery cells in parallel, and battery module 19-1～19-n connects and constitutes battery 19.
Battery module 19-1～19-n comprises the motor driven fan 19A-1～19A-n as cooling device respectively.This motor driven fan 19A-1～19A-n accepts the supply of electric power respectively from battery module 19-1～19-n, drive by drive control part 120.
And, be connected with module voltage test section 130-1～130-n respectively at battery module 19-1～19-n.Expression is imported into drive control part 120 by each the signal of telecommunication of battery voltage value of the detected battery module 19-1～19-n of module voltage test section 130-1～130-n.
And shown in Fig. 2 (b), battery module 19-1～19-n comprises the 19B-1～19B-n of battery portion, bypass circuit 19C-1～19C-n and change over switch 19D-1～19D-n respectively.Change over switch 19D-1～19D-n is provided in the front and back of each 19B-1～19B-n of battery portion.At this, 2 places before and after change over switch 19D-1～19D-n may not be arranged on also can be at any 1 place.Bypass circuit 19C-1～19C-n also can be provided with less than the battery cell of battery module unit.
19B-1～the 19B-n of battery portion is respectively the position of accumulating electric power in the inside of battery module 19-1～19-n.
Bypass circuit 19C-1～19C-n is the circuit that is used for the voltage of the 19B-1～19B-n of battery portion is reduced to the magnitude of voltage of predesignating in the time of setting, and the conversion of change over switch 19D-1～19D-n is undertaken by drive control part 120.
In addition, shown in Fig. 2 (b), change over switch 19D-1～19D-n is connected the position that the 19B-1～19B-n of battery portion can discharge and recharge usually, only converts bypass circuit 19C-1～19C-n to by drive control part 120 under the situation of regulation.The conversion and control of aftermentioned change over switch 19D-1～19D-n.
In addition,, battery 19 is shown, but replaces battery 19, also can use as electric storage means with capacitor, the secondary cell that can discharge and recharge or other forms of power supply that can Change Power as electric storage means at this.
Fig. 3 is the figure that is used for illustrating the measuring principle when the charge-discharge controller of execution mode 1 is measured the degradation of each battery module, be the charging voltage of expression when measuring internal resistance value and direct capacitance value through the time performance plot that changes.
Fig. 4 is the figure that is used for illustrating the measuring principle when the charge-discharge controller of execution mode 1 is measured the degradation of each battery module, Fig. 4 (a) is the concept map of expression based on the determination methods of the degradation of internal resistance value, and Fig. 4 (b) is the concept map of expression based on the determination methods of the degradation of direct capacitance value.
In addition, with respect to battery module 19-1～19-n, the mensuration of this degradation and the adjusting of level of charge are the processing of carrying out by as the drive control part 120 of degradation test section and adjusting portion.
And, because that the mensuration of the degradation that carries out with respect to battery module 19-1～19-n is handled is all identical, so, the situation of the degradation of measuring battery module 19-1 is described at this.The degree of deterioration by battery module internal resistance or the amount of the variation of static capacity judge.
As shown in Figure 3, when moment t=0,19-1 does not flow through battery current at battery module.Therefore, be zero by battery current test section 107 detected battery current values, be V0 by the detected charging voltage value of module voltage test section 130-1.
When moment t=t1, the discharge of drive control part 120 beginning battery module 19-1.This discharge is under the fixing situation that keeps battery current value I and continue to t=t2 constantly.
As shown in Figure 3, after moment t=t1 (that is, just begun discharge after) soon, because the voltage of the internal resistance composition of battery module 19-1 descends, so charging voltage value moment reduction Δ V1.
Charging voltage value has reduced after the Δ V1, and by the constant-current discharge based on battery current value I, charging voltage value continues to be lowered into linear, to reducing Δ V2 till the t=t2 constantly.
At this, the internal resistance value R of battery module 19-1 and direct capacitance value C can be represented by following (1) formula and (2) formula.
R＝ΔV1/I ...(1)
C＝∫Idt//ΔV2 ...(2)
The deterioration progress degree of the power storage module of using in the Reserve Power Division exists with ... the temperature and the charging voltage of power storage module, and temperature is high more or charging voltage is high more, and the progress degree of deterioration is fast more.So in the present embodiment, grasp the progress degree of deterioration with the variation of the variation of the resistance value of internal resistance or static capacity, by the temperature of control power storage module or the progress degree that charging voltage is regulated deterioration.Fig. 4 (a) shows the state that the internal resistance of the deterioration progress of following power storage module increases.Fig. 4 (b) shows the state that the static capacity of the deterioration progress of following power storage module reduces.
With shown in the solid line, the internal resistance value of battery module 19-1～19-n is increased gradually by initial resistivity value R0 as Fig. 4 (a).
At this, producing on battery module 19-1 and the 19-2 degradation under the situation of difference, do not carry out under the situation that discharges and recharges control based on execution mode 1, as using shown in the chain-dotted line, the internal resistance value of the battery 19-1 that degradation is bigger exceeds the critical value of life-span judgement in the Tr1 time.
So, as long as comprise the battery module of the critical value Rt that a life-span that exceeds internal resistance value is judged, then the performance of battery 19 integral body will reduce, and also can bring bad influence to the life-span of integral body sometimes.
And shown in Fig. 4 (b), the direct capacitance value of battery module 19-1～19-n is reduced gradually by initial value C0.
Also identical for static capacity, under the situation that discharges and recharges control of not carrying out based on execution mode 1, as using shown in the chain-dotted line, the internal resistance value of the battery 19-1 that degradation is bigger is lower than the critical value Ct that judges in the Tc1 time lifetime.
So, as long as comprise the battery module of the critical value Ct that a life-span that is lower than the direct capacitance value is judged, then the performance of battery 19 integral body will reduce, and also life-span of integral body is brought bad influence sometimes.
Relative therewith, in the charge-discharge controller of present embodiment 1, drive control part 120 is as an index of the degradation of expression battery module 19-1～19-n, measure internal resistance value, if the poor Δ R of the internal resistance value of battery module 19-1 and 19-2 greater than the critical value R1 (t=tr0) of regulation, then reduces the higher limit of the charging voltage of battery module 19-1.
At this, when the higher limit of the charging voltage of battery module 19-1 is reduced to the value of predesignating, the upper voltage limit of battery module 19-1 is reduced to the voltage of the deterioration progress degree that fully is slower than battery module 19-2, and the impairment grade of battery module 19-2 is lowered into the degree of the impairment grade of catching up with battery module 19-1.
And, also identical for the direct capacitance value, in the charge-discharge controller of execution mode 1, drive control part 120 is as an index of the degradation of expression battery module 19-1～19-n, measure the direct capacitance value, if the poor Δ C of the direct capacitance value of battery module 19-1 and 19-2 greater than the critical value C1 (t=tc0) of regulation, then reduces the higher limit of the charging voltage of battery module 19-1.
So, degradation exists with ... the temperature and the charging voltage of battery 19, therefore, shown in Fig. 4 (a) with dashed lines, be lower than the level of charge of other battery module 19-2～19-n by the level of charge that makes the higher battery module 19-1 of degradation, can slowly increase the ratio of internal resistance value of the battery module 19-1 of deterioration progress with respect to the process of time, for example, with battery module 19-2 in the same manner, can extend to the Tr2 time based on the life-span that internal resistance value is judged.
And, reduction for the direct capacitance value is also identical, shown in Fig. 4 (a) with dashed lines, be lower than the level of charge of other battery module 19-2～19-n by the level of charge that makes the higher battery module 19-1 of degradation, can slowly reduce the ratio of direct capacitance value of the battery module 19-1 of deterioration progress with respect to the process of time, for example, with battery module 19-2 in the same manner, the life-span of judging based on the direct capacitance value can be extended to the Tc2 time.
The adjusting of this level of charge is carried out with respect to each of battery module 19-1～19-n.
So,, produce at degradation under the situation of deviation,, can prolong the life-span of the higher battery module of degradation by reducing the level of charge of the higher battery module of degradation according to the charge-discharge controller of execution mode 1.
And, so,, can prolong the life-span of battery 19 integral body by reducing the level of charge of the higher battery module of degradation.
Fig. 5 is the figure of expression based on the processing sequence of the level of charge change processing of the charge-discharge controller of execution mode 1.This is the processing of carrying out by drive control part 120.
The running of beginning electric driving part 112, then drive control part 120 is measured internal resistance value and the direct capacitance value (step S11) of battery module 19-1～19-n.
Internal resistance value and direct capacitance value are that battery module 19-1～19-n is flow through constant current I and makes it discharge, and based on each the detected charging voltage value that passes through module voltage test section 130-1～130-n with by battery current test section 107 detected battery current I (constant current I), (1) formula that utilization has been stated and (2) formula are measured.
Drive control part 120 judges on the degradation based on each internal resistance value and the direct capacitance value of battery module 19-1～19-n whether deviation (step S12) is arranged.
For internal resistance value, whether this judgement is carried out greater than above-mentioned critical value R1 based on the poor Δ R of the internal resistance value of minimum internal resistance value and other battery module.
And, in the same manner,, whether carry out greater than above-mentioned critical value C1 based on the poor Δ C of the direct capacitance value of the direct capacitance value of maximum and other battery module for the direct capacitance value.
In addition, in execution mode 1, any one party in internal resistance value and direct capacitance value exceeds under the situation of critical value, is judged to be and produces deviation on the degradation.
Drive control part 120 reduces the higher limit (step S13A) of the charging voltage of the battery module that degradation height and deterioration making progress when being judged to be deviation.Thus, can prolong the life-span of the battery module that deterioration making progress.
At this, in execution mode 1, measure under internal resistance value and direct capacitance value both sides' the situation, can be judged to be the deviation that deterioration is arranged under both sides have exceeded the situation of critical value.
In addition, under the situation of the critical value that exceeds any one party, also can be judged to be deviation.In this case, can distinguish that the fastest battery module of progress of deterioration controls the progress of deterioration, therefore can deal with equalization quickly.
And, battery module 19-1～19-n is connected, therefore in battery module 19-1～19-n, the change over switch (in 19D-1～19D-n any one) of higher limit by the module that drive control part 120 met when the charging of charging voltage that reduces the module that makes fast progress of deterioration converts bypass circuit (any one among 19C-1～19C-n) to, can make till the higher limit after the charging voltage of this battery module reaches reduction.
In addition, in step S12, do not have in judgement under the situation of deviation, drive control part 120 is set (step S13B) with the higher limit of present charging voltage as the higher limit of charging voltage.That is, do not change the higher limit of charging voltage.
What the higher limit of the higher limit of the charging voltage that drive control part 120 utilization is changed in step S13A or the charging voltage that is not changed in step S13B was carried out battery 19 discharges and recharges control (step S14).
After step S14 finished, then drive control part 120 finished processing sequence shown in Figure 5.
In addition, more than, when each entry into service electric driving part 112, the mode of the degradation of judging battery module 19-1～19-n is illustrated, but for example also can be as 1 time, with every specified time limit 1 time frequency carry out.
As above,, produce at degradation under the situation of deviation,, can prolong the life-span of the higher battery module of degradation by reducing the level of charge of the higher battery module of degradation according to the charge-discharge controller of execution mode 1.
And, so,, can prolong the life-span of battery 19 integral body by reducing the level of charge of the higher battery module of degradation.
More than, to being illustrated by change over switch 19D-1～19D-n being converted to the mode of higher limit that bypass circuit 19C-1～19C-n realizes reducing the charging voltage of battery module 19-1～19-n, but by improving the rotating speed of motor driven fan 19A-1～19A-n, increase the consumption electric power of motor driven fan 19A-1～19A-n, thereby till can when charging, making the charging voltage of this battery module reach setting (higher limit after the reduction).
In this case, do not need bypass circuit 19C-1～19C-n and change over switch 19D-1～19D-n.
More than, each internal resistance value and direct capacitance value both sides that measure battery module 19-1～19-n are judged that the mode of degradation is illustrated, but also can measure any one party in internal resistance value or the direct capacitance value, judge degradation based on measurement result.
And, more than, come each the mode of level of charge of regulating cell module 19-1～19-n to be illustrated to degradation based on battery module 19-1～19-n, but replace or except these, also can regulate the level of charge of each secondary battery unit based on each the degradation of a plurality of secondary battery units that is included in battery module 19-1～19-n.
And, more than, the mode that is equipped with in battery module 19-1～19-n as the motor driven fan 19A-1～19A-n of cooling device is illustrated, but replaces motor driven fan 19A-1～19A-n also can use water-cooled pump, Peltier (peltier) element.
[execution mode 2]
To be expression discharge and recharge the figure of the structure of the type of voltage step-up of control and battery by the charge-discharge controller of execution mode 2 to Fig. 6.
Battery module 19-1～the 19-n of the charge-discharge controller of execution mode 2 is parallel with one another, on each of battery module 19-1～19-n,, also be connected with blocks current test section 140-1～140-n and type of voltage step-up 100-1～100n except being connected with module voltage test section 130-1～130-n.
That is, type of voltage step-up 100-1～100n by parallel with one another in DC bus 110.
The structure of each of type of voltage step-up 100-1～100n is identical with the structure of the type of voltage step-up 100 of the control circuit power that is included in execution mode shown in Figure 11, comprises reactor 101, boosts with IGBT102A, step-down IGBT102B, power connector end 103, lead-out terminal 104 and capacitor 105.
In addition, the type of voltage step-up 100 of execution mode 1 comprises battery voltage detection portion 106 and battery current test section 107, but the type of voltage step-up 100-1 of execution mode 2～100n does not comprise battery voltage detection portion 106 and battery current test section 107, replace, be connected with module voltage test section 130-1～130-n and blocks current test section 140-1～140-n, based on carry out the buck action by module voltage test section 130-1～130-n and the detected magnitude of voltage of blocks current test section 140-1～140-n and current value.
Fig. 7 is the figure of expression based on the processing sequence of the level of charge change processing of the charge-discharge controller of execution mode 2.This is the processing of carrying out by drive control part 120.Yet, in battery module 19-1～19-n, becoming fixing charging voltage value under the situation of parallel connection, therefore can not come life-saving by the higher limit of change charging voltage in the same manner with execution mode 1.At this, following mode has been described in execution mode 2, promptly, be conceived to life-span by temperature effect battery 19, suppress to generate heat by the charging current of restriction to battery module 19-1～19-n, by the temperature of the higher battery module of the progress degree that reduces deterioration, thereby can carry out equalization to the progress of the deterioration of battery module 19-1～19-n.
Entry into service electric driving part 112, then drive control part 120 utilizes (1) formula of having stated to reach internal resistance value and the direct capacitance value (step S21) that (2) formula is measured battery module 19-1～19-n.
Internal resistance value and direct capacitance value are to flow through constant current I and make it discharge in each of battery module 19-1～19-n, and, utilize (1) formula of having stated and (2) formula to measure based on each the detected charging voltage value by module voltage test section 130-1～130-n and each the detected battery current I (constant current I) by blocks current test section 140-1～140-n.
Drive control part 120 judges on the degradation based on each internal resistance value and the direct capacitance value of battery module 19-1～19-n whether deviation (step S22) is arranged.
For internal resistance value, whether this judgement is carried out greater than above-mentioned critical value R1 based on the poor Δ R of the internal resistance value of minimum internal resistance value and other battery module.
And, in the same manner,, whether carry out greater than above-mentioned critical value C1 based on the poor Δ C of the direct capacitance value of the direct capacitance value of maximum and other battery module for the direct capacitance value.
In addition, in execution mode 2, any one party in internal resistance value and direct capacitance value exceeds under the situation of critical value, is judged to be and produces deviation on the degradation.
Drive control part 120 is being judged to be under the situation devious, and the higher limit of the charging current of the battery module that degradation height and deterioration are being made progress is reduced to the current value of predesignating (step S23A).Thus, can suppress the heating that causes because of internal resistance, therefore can prolong the life-span of the battery module that deterioration making progress.
At this, battery module 19-1～19-n is by parallel connection, and DC bus 110 between be equipped with type of voltage step-up 100-1～100n.
For this reason, by carrying out step-down action at 120 couples of type of voltage step-up 100-1～100n of drive control part and reduce higher limit when each of battery module 19-1～19-n charged, realize reducing any one the higher limit of charging current among battery module 19-1～19-n.
In addition, in step S22, be judged to be under the situation that does not have deviation, drive control part 120 is set (step S23B) with the higher limit of present charging current as the higher limit of charging current.That is, do not change the higher limit of charging current.
What the higher limit of the higher limit of the charging current that drive control part 120 utilization is changed in step S23A or the charging current that is not changed in step S23B was carried out battery 19 discharges and recharges control (step S24).
After step S24 finished, then drive control part 120 finished processing sequence shown in Figure 7.
As above, charge-discharge controller according to execution mode 2, producing on the degradation of battery module 19-1～19-n under the situation of deviation,, can prolong the life-span of the higher battery module of degradation by reducing the level of charge of the higher battery module of degradation.
And, so,, can prolong the life-span of battery 19 integral body by reducing the level of charge of the higher battery module of degradation.
More than, each internal resistance value and direct capacitance value both sides that measure battery module 19-1～19-n are judged that the mode of degradation is illustrated, but also can judge degradation based on any one party in internal resistance value or the direct capacitance value.
[execution mode 3]
Fig. 8 is the figure of expression based on the processing sequence of the level of charge change processing of the charge-discharge controller of execution mode 3.This is the processing of carrying out by drive control part 120.
The difference of the charge-discharge controller of execution mode 3 and execution mode 1,2 is, replaces regulating level of charge, and each the cooling degree of regulating cell module 19-1～19-n.
Battery module 19-1～19-n can be that to connect also can be in parallel, and circuit structure can be any one structure among Fig. 2 or Fig. 6, but under the situation of series connection, does not need bypass circuit 19C-1～19C-n shown in Figure 2 and change over switch 19D-1～19D-n.
Entry into service electric driving part 112, then drive control part 120 utilizes (1) formula of having stated to reach internal resistance value and the direct capacitance value (step S31) that (2) formula is measured battery module 19-1～19-n.
At this, the mensuration of internal resistance value and direct capacitance value is under the situation that battery module 19-1～19-n is connected, identical with the step S11 in the execution mode 1, battery module 19-1～19-n is flow through constant current I and makes it discharge, and based on each the detected charging voltage value that passes through module voltage test section 130-1～130-n with by battery current test section 107 detected battery current I (constant current I), (1) formula that utilization has been stated and (2) formula are measured.
And, battery module 19-1～19-n by the situation of parallel connection under, identical with the step S21 in the execution mode 2, battery module 19-1～19-n is flow through constant current I and makes it discharge, and, utilize (1) formula and (2) formula of having stated to measure based on each the detected charging voltage value by module voltage test section 130-1～130-n and each the detected battery current I (constant current I) by blocks current test section 140-1～140-n.
Drive control part 120 judges on the degradation based on each internal resistance value and the direct capacitance value of battery module 19-1～19-n whether deviation (step S32) is arranged.
For internal resistance value, whether this judgement is carried out greater than above-mentioned critical value R1 based on the poor Δ R of the internal resistance value of minimum internal resistance value and other battery module.
And, in the same manner,, whether carry out greater than above-mentioned critical value C1 based on the poor Δ C of the direct capacitance value of the direct capacitance value of maximum and other battery module for the direct capacitance value.
In addition, in execution mode 3, any one party in internal resistance value and direct capacitance value exceeds under the situation of critical value, is judged to be and produces deviation on the degradation.
Drive control part 120 is being judged to be under the situation devious, and the rotating speed of the motor driven fan of the battery module that degradation height and deterioration are being made progress increases to the rotating speed (step S33A) of regulation.Thus, the battery module that deterioration is being made progress further is cooled than other battery module, can life-saving.
In addition, in step S32, be judged to be under the situation that does not have deviation, drive control part 120 is set (step S33B) with the higher limit of present charging voltage as the higher limit of charging voltage.That is, do not change the higher limit of charging voltage.
What the higher limit of the higher limit of the charging voltage that drive control part 120 utilization is changed in step S33A or the charging voltage that is not changed in step S33B was carried out battery 19 discharges and recharges control (step S34).
After step S34 finished, then drive control part 120 finished processing sequence shown in Figure 8.
As above,, produce at degradation under the situation of deviation,, can prolong the life-span of the higher battery module of degradation by increasing the cooling degree of the higher battery module of degradation according to the charge-discharge controller of execution mode 3.
And, so,, can prolong the life-span of battery 19 integral body by increasing the cooling degree of the higher battery module of degradation.
And, the mode that realizes by the rotating speed that each the rotating speed of motor driven fan of battery module 19-1～19-n is increased to regulation is represented, but also can not changed the rotating speed of motor driven fan, realize by the desired temperature that the rotation that reduces motor driven fan begins.At this moment, begin in advance to rotate the motor driven fan that possesses on the higher battery module of degradation by the motor driven fan of battery module, thereby can prolong the life-span of the higher battery module of degradation than other.
More than, each internal resistance value and direct capacitance value both sides that measure battery module 19-1～19-n are judged that the mode of degradation is illustrated, but also can judge degradation based on any one party in internal resistance value or the direct capacitance value.
More than, the charge-discharge controller of exemplary execution mode of the present invention is illustrated, but the invention is not restricted to concrete disclosed execution mode, under the situation that does not break away from claims, can carry out various distortion or change.
Claims (6)
1. a charge-discharge controller carries out the control that discharges and recharges of a plurality of Reserve Power Divisions, this a plurality of Reserve Power Divisions and carried out the exchange of electric power between the electric driving part of motorized motions, and this charge-discharge controller is characterised in that, comprising:
The degradation test section detects each degradation of above-mentioned a plurality of Reserve Power Divisions;
Adjusting portion is regulated any one cooling degree or level of charge at least in above-mentioned a plurality of Reserve Power Division based on the testing result of above-mentioned degradation test section.
2. charge-discharge controller as claimed in claim 1 is characterized in that,
The driver of the cooling device of above-mentioned adjusting portion by regulating above-mentioned Reserve Power Division is regulated above-mentioned cooling degree.
3. charge-discharge controller as claimed in claim 2 is characterized in that,
The cooling that above-mentioned cooling device is mounted in above-mentioned Reserve Power Division is with fan, coolant pump or be installed in the Peltier element of above-mentioned Reserve Power Division.
4. charge-discharge controller as claimed in claim 1 is characterized in that,
Above-mentioned adjusting portion is regulated above-mentioned level of charge based on the internal resistance value or the direct capacitance value of above-mentioned a plurality of Reserve Power Divisions.
5. charge-discharge controller as claimed in claim 4 is characterized in that,
Above-mentioned adjusting portion is regulated above-mentioned level of charge by regulating at least the higher limit of the charging voltage of the Reserve Power Division of any one under each situation of connecting mutually of above-mentioned a plurality of Reserve Power Divisions.
6. charge-discharge controller as claimed in claim 4 is characterized in that,
Above-mentioned adjusting portion is regulated above-mentioned level of charge by regulating at least the charging and discharging currents value of the Reserve Power Division of any one under each situation parallel with one another of above-mentioned a plurality of Reserve Power Divisions.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008297258A JP4975715B2 (en) | 2008-11-20 | 2008-11-20 | Charge / discharge control device |
| JP297258/2008 | 2008-11-20 |
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| Publication Number | Publication Date |
|---|---|
| CN101741120A true CN101741120A (en) | 2010-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910222843A Pending CN101741120A (en) | 2008-11-20 | 2009-11-19 | Charging and discharging control device |
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| Country | Link |
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| JP (2) | JP4975715B2 (en) |
| CN (1) | CN101741120A (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP5394357B2 (en) | 2014-01-22 |
| JP2010124634A (en) | 2010-06-03 |
| JP4975715B2 (en) | 2012-07-11 |
| JP2011109910A (en) | 2011-06-02 |
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Application publication date: 20100616 |