WO2013175006A1 - Procede de determination d'un etat d'energie d'un accumulateur electrochimique, dispositif, support et programme informatique - Google Patents
Procede de determination d'un etat d'energie d'un accumulateur electrochimique, dispositif, support et programme informatique Download PDFInfo
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- WO2013175006A1 WO2013175006A1 PCT/EP2013/060798 EP2013060798W WO2013175006A1 WO 2013175006 A1 WO2013175006 A1 WO 2013175006A1 EP 2013060798 W EP2013060798 W EP 2013060798W WO 2013175006 A1 WO2013175006 A1 WO 2013175006A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/367—Software therefor, e.g. for battery testing using modelling or look-up tables
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/3644—Constructional arrangements
- G01R31/3648—Constructional arrangements comprising digital calculation means, e.g. for performing an algorithm
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/374—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] with means for correcting the measurement for temperature or ageing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/545—Temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/547—Voltage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/549—Current
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3842—Arrangements for monitoring battery or accumulator variables, e.g. SoC combining voltage and current measurements
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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
-
- 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
Definitions
- the invention relates to the field of electrochemical accumulators.
- the subject of the invention is more particularly a method for estimating a final energy state of an electrochemical accumulator from a set of quadruplets of values relating to operating points of the electrochemical accumulator including power, temperature, energy status and remaining energy.
- the status indicator of the accumulator is based on an evaluation of the amount of electric charges stored in the accumulator.
- the measurement of the intensity of the current extracted, and / or supplied to the accumulator, associated with an integral calculation, allows the realization of the "state of charge” indicator SOC (for "State of Charge” in English) .
- Q0 represents the amount of initial charges stored in the Coulomb battery
- Qmax represents the maximum charge amount of the battery (full battery) in Coulomb
- SOC represents a state of charge in percentage. This usual indicator of state of charge is not satisfactory insofar as it does not take into account losses of the accumulator, including losses due to its internal resistance.
- Document FR2947637 discloses a method for characterizing the energy state of an accumulator.
- the objective of this method is to determine some characteristic points of the behavior of the accumulator which define a set of values SOE (state of energy in Wh), P (useful power extracted in W), En (energy remaining in Wh) , which can be mapped in a three-dimensional space as shown in Figure 1.
- SOE state of energy in Wh
- P useful power extracted in W
- En energy remaining in Wh
- the energy state is relative to the energy available at a reference power.
- This reference power can be that for which the available energy is maximum.
- the SOE values of FIG. 1 allowing such reasoning can be determined from a standard accumulator, or from a set of battery accumulators, and are therefore standardized in the laboratory in a controlled power and energy environment. remaining at the level of the accumulator.
- the object of the present invention is to propose a solution which overcomes the disadvantages listed above and which allows a rapid resolution of the energy state.
- the method for estimating a final energy state SOEf of an electrochemical accumulator from a set of quadruplets of values relating to operating points of the electrochemical accumulator including power, temperature, state of energy and remaining energy may include:
- the evaluation phase of the initial energy remaining Eni can comprise the following steps:
- each of the first and second intermediate remaining energies T i, T2 is determined as follows:
- the nearest points can be determined by distance calculation using standard 2.
- the equation of the Cartesian plane written in the form Ax + By + Cz + D 0 with A, B, C and D being determined as a function of the coordinates of the three selected intermediate operating points, Associated remaining intermediate energy In Tj is calculated according to Advantageously, the initial remaining energy Eni is obtained by linear interpolation in application of the formula
- the phase of determining the final energy state SOEf can comprise the following steps:
- the determination of the first and second intermediate energy states SOE -T i, SOE 2- T2 implements the equations of the Cartesian planes respectively associated with the first remaining intermediate energy In T i and the second remaining intermediate energy In T2 .
- each intermediate energy state is determined as follows:
- the plurality of pairs is determined on a range of energy states located at the initial energy state SOE [0].
- the initial energy state SOE [0] may be within the range, or be a bound of the range.
- the accumulator being in the charging phase, the initial energy state SOE [0] constitutes the lower limit of the range, or the accumulator being in the discharge phase the initial energy state SOE [0] constitutes the upper limit of the beach.
- the final SOEf energy state is calculated by linear interpolation according to the following equation
- the method is iterative, and at the end of an iteration the value of the initial energy state SOE [0] is replaced by that of the final energy state SOEf.
- a correction coefficient comes to weight the amount of energy.
- the invention also relates to a device for determining an energy state of an accumulator comprising hardware and software means for implementing the estimation method as described.
- the invention also relates to a data storage medium readable by a computer, on which is recorded a computer program comprising computer program code means executable by the software means of the device as described for implementing the method. estimation as described.
- the invention also relates to a computer program comprising a computer program code means executable by the software means of the device as described for the implementation of the estimation method as described, in particular when the program is executed by a user. computer.
- FIG. 1 represents the distribution of operating points of an accumulator as a function of the remaining energy, the power and the state of energy
- FIG. 2 represents an improvement of FIG. 1 in the sense that the operating temperature of the accumulator is also taken into account;
- FIG. 3 illustrates the main phases of the method of determining the state of energy
- FIG. 4 illustrates a detail of a phase of FIG. 3,
- FIG. 5 illustrates a detail of a step of FIG. 4,
- FIG. 6 illustrates a detail of a phase of FIG. 3,
- FIG. 7 illustrates a detail of a step of FIG. 6,
- FIGS. 8 and 9 illustrate a test protocol for validating the efficiency of the method of determining the state of energy.
- the management of resources to determine a state of energy is a parameter not to be neglected.
- Each point includes a power P, a state of energy SOE, a remaining energy En, and a temperature T.
- the temperature has been integrated because it influences the behavior of the internal resistance of the electrochemical accumulator.
- table for example, a function is understood that makes it possible to output a value, advantageously unique, of remaining energy. when in input we know values of SOE, P, and T stored in the table.
- This value of SOE is between 0 and 1, the value equal to 1 corresponding to a state of energy of the fully charged battery , and the value equal to 0 as a totally unloaded state. This value can also be expressed as a percentage.
- the power P is within a range of operating power recommended by the battery manufacturer, either directly supplied by this manufacturer, or deduced for example from a current range supplied by this manufacturer, by multiplication by a nominal voltage. provided.
- This power is a function of the state of use of the accumulator, namely charging or discharging. In case of discharge, it will be said that the power P is taken from the battery, and in case of charging, it will be said that the power P is supplied to the battery.
- the states charged and discharged are determined according to the technology of the accumulator. They can be obtained from the recommendations of the manufacturer of the accumulator, and generally from threshold voltages.
- the remaining energy In corresponds to the useful energy of the accumulator, it is expressed in Wh, and takes into account the internal energy actually stored in the accumulator, and the energy lost by the joule effect in the internal resistance of the accumulator. the accumulator.
- Ep j " rPdt: representing the energy lost by Joule effect in the internal resistance of the accumulator
- Ei Q.U: the internal energy stored in the accumulator.
- the set of quadruplets can be generated as described in the French patent application published under the number FR2947637 taking into account in addition the temperature ( Figure 2).
- the values of the state of energy and of the remaining energy can vary according to the temperature representative of the operation of the accumulator, it is for that it is advantageous to take the latter into account. The skilled person will therefore be able to generate such a set, for example by experimentation.
- a method has been developed for estimating a final energy state SOEf of an electrochemical accumulator from a set of quadruplets of values relating to operating points of the electrochemical accumulator including power P, temperature T, state of energy SOE, and energy remaining In. This method is advantageously iterative, and at the end of an iteration, the value of the initial energy state SOE [0] is replaced by that of the final energy state SOEf, for example by modifying the value corresponding in a memory.
- the method comprises a phase E1 in which a temperature T m and a power P m are measured. These temperatures T m and power P m are representative of the current operation of the accumulator.
- current is meant the operating state of the accumulator especially during the iteration.
- power and temperature representative of the accumulator means the power at which energy is taken or supplied to the accumulator, and the operating temperature of the accumulator.
- the stored power values P are advantageously all positive. Therefore, if a negative power Pm is measured, it is known that the accumulator is in discharge, and if a positive power Pm is measured, it is known that the accumulator is charging.
- the quadruplets contain only positive values of power
- the temperature Tm is advantageously measured as close as possible to the accumulator, generally on its surface.
- the accumulator forms a battery of elementary accumulators
- a phase E2 a initial energy state SOE [Q] is determined. This determination can be performed by reading the corresponding value in the memory referred to above.
- the initial energy state SOE [0] corresponds in fact to the final energy state SOEf of the previous iteration.
- the accumulator can be charged to its maximum, and when stopping the charge, the value of the memory is representative of 100%. Or conversely, the accumulator can be completely discharged, and the value stored in the initialization can be representative of 0%.
- the E2 phase is shown as consecutive to the E1 phase, it can be performed before, concomitantly, or after the E2 phase.
- an evaluation phase E3 of an initial remaining energy Eni is carried out from the initial energy state SOE [Q] and power measurements P m and temperature T m .
- This evaluation phase implements an interpolation step, in particular linear interpolation, and uses at least quadruets of the set of quadruplets.
- FIG. 4 illustrates a particular, and not limiting, embodiment of phase E3.
- a first intermediate residual energy T i associated with a temperature T1 higher than the measured temperature T m . This temperature T1 is known from the set of quadruplets.
- a second intermediate energy T 2 associated with a temperature T2 lower than the measured temperature T m is also determined .
- This temperature T2 is known from the set of quadruplets. Once these two intermediate values are known, we define E3-2 the initial remaining energy Eni by linear interpolation between the first and second intermediate remaining energies.
- FIG. 5 illustrates a particular implementation of the step E3-1 in the course of which it is sought to determine In T i and In T 2- Typically at the associated temperature, that is T1 to determine In T i, or T2 to determine In T 2, three intermediate points E3-1 -1 are chosen whose coordinates include energy state, power and remaining energy from the set of quadruplets, these three intermediate points being the most important. close to a running intermediate operating point of the accumulator.
- the current intermediate operating point of the accumulator is a function of the first state of energy SOE [0] and the power P m measured.
- the nearest intermediate points can be determined from a set of power and power state pairs chosen from the set of quadruplets at the given temperature (if appropriate according to T1 or T2) .
- the set of couples can be represented in a plane giving the state of energy as a function of the power. Once the three couples have been selected, it is possible to extract for each pair the value of the associated remaining energy, as a function of the temperature T1, or if appropriate of the temperature T2, contained in the set of quadruplets. The three intermediate operating points were thus formed. Once the three known points, we define E3-1 -2 a Cartesian plane equation passing through the three selected intermediate operating points. In other words, we will therefore determine for the temperature T1 a Cartesian plane from determined intermediate operating points of a subset of points from the set of quadruplets, and all associated with the same temperature T1, this Cartesian plane. , in particular via its coefficients, being then used to determine In T i.
- the nearest points are determined by distance calculation using the standard 2, typically applied to the vectors defined by two points each associated with a power and a state of energy.
- the norm 2 makes it possible to calculate the "norm" of a vector defined by the known operating point and one of the intermediate operating points.
- These distance calculations can be alleviated by prefiltering due to a sampling of the maps.
- Tj - -, with j equal to 1 or 2 if necessary.
- a determination phase E4 (FIG. 3) of a final remaining energy Enf is carried out as a function of the initial energy remaining Eni and of a quantity of energy taken or supplied to the energy source. 'accumulator. In fact, the amount of energy will be different if the accumulator is during a charging phase (energy supplied to the accumulator) or discharge (energy taken from the accumulator).
- P.dt represents the quantity of energy, and is associated with a positive value of power supplied to the accumulator during a period determined during a charging phase, or at a negative power value discharged by / taken from the accumulator during a given period during a discharge phase.
- the determined period corresponds to the step of the iteration.
- the pitch of the iteration is advantageously between 10ms and 10s, in particular equal to 1 s. In fact, everything will be linked to the effective circulation of information within an associated calculator and to the refresh of the indicators.
- a corrective coefficient comes, preferably, to weight the quantity of energy.
- the corrective coefficient can be determined from a table made during a calibration phase and giving a value of corrective function of temperature and state of charge.
- the value to be used for the weighting can be determined during a Cartesian interpolation of the table so as to find a value associated with Tm and
- the method comprises a determination phase E5 of the final energy state SOEf as a function of the measured power P m , of the measured temperature T m and of the final remaining energy Enf, implementing an interpolation step, including linear interpolation and advantageously using at least quadruplets of the set of quadruplets.
- FIG. 6 illustrates in more detail a particular and non-limiting embodiment of the E5 phase.
- This phase E5 is divided into steps E5-1 and E5-2.
- step E5-1 a first intermediate energy state SOE -T i associated with a temperature T1, higher than the measured temperature T m and known from the set of quadruplets, and another part of a second state of intermediate energy SOE 2 - T2 associated with a temperature T2, lower than the measured temperature T m and known from the set of quadruplets.
- the values of T1 and T2 are advantageously identical to those determined earlier to calculate the remaining intermediate energies.
- step E5-2 the final energy state SOEf is defined by linear interpolation between the first and second intermediate energy states SOE -T i, SOE 2- T2-
- the determination of the first and second intermediate energy states SOE -T i, SOE 2- T2 implements the equations of the Cartesian planes respectively associated with the first remaining intermediate energy In T i and the second intermediate energy remaining in T 2 (these are the eq1 equations defined above for the T1 and T2 temperatures).
- SOE -T i we use the equation of the Cartesian plane which was used to determine In T i
- SOE 2 -T 2 we use the equation of the Cartesian plane which was used to determine In T 2 case, each state of intermediate energy can be determined according to the refinement of the step E5-1 illustrated in FIG. 7.
- the plurality of pairs is determined on a beach energy state located at the initial energy state SOE [0].
- the initial energy state SOE [0] is within the range, or is a bound of the range.
- the initial energy state SOE [0] is the lower bound of the range.
- the initial energy state SOE [0] is the upper limit of the range.
- a computer-readable data recording medium on which a computer program is recorded may include computer program code means for implementing the phases and / or steps of the method of determining the state of energy. final SOEf.
- a computer program comprising a computer program code means may be adapted to the realization of the phases and / or steps of the method of determining the state of energy, when the program is executed by a computer.
- a device for determining an energy state of an electrochemical accumulator may comprise: a storage element of the first set; a measuring element of a temperature T m , and a power P m , representative of the current operation of the accumulator; an element for determining an initial energy state SOE [0], notably comprising a memory; an element configured to evaluate an initial remaining energy Eni from the measurements of power P m , of temperature T m and of the initial energy state SOE [0] implementing an interpolation stage, in particular of linear interpolation , and using the set of quadruplets; an element configured to determine a final remaining energy Enf, a function of the initial energy remaining Eni and a quantity of energy taken or supplied to the accumulator; an element configured to determine the final energy state SOEf as a function of the measured power P m , of the measured temperature T m and of the final remaining energy Enf, implementing an interpolation stage, in particular an interpolation stage linear, and advantageously using at least quadruplets the set
- the device may comprise hardware and / or software means for implementing the steps / phases of the determination method as described (more particularly, the hardware and / or software means may implement the determination method such as as described).
- the device may comprise, for each phase and / or step of the method, a dedicated element configured to perform the phase and / or said step.
- the computer program of the recording medium may comprise computer program code means executable by the software means of the device as described for implementing the method as described.
- the computer program may comprise a computer program code means executable by the software means of the device as described for the implementation of the method as described, in particular when the program is executed by a computer.
- a power profile having charging and discharging phases, has been applied to an accumulator.
- the voltage across the accumulator and the temperature of the accumulator were read.
- the power profile and the operating temperature of the accumulator are injected into a simulation of the calculation algorithm for estimating the state of energy presented previously. As part of this simulation it was used:
- FIG. 8 illustrates the evolution of the voltage Ubatt_real of the accumulator as a function of time (in hour h) and evolution of the state of energy (SOE in%) as a function of time (in hours h) during a discharge phase of the accumulator.
- FIG. 9 illustrates the evolution of the battery voltage Ubatt_real as a function of time (in hour h) and the evolution of the remaining energy (Wh) as a function of time (in hour h) during a phase discharge of the accumulator.
- FIGS 8 and 9 show that at the end of the discharge, the energy state (SOE) and the available energy are effectively close to 0 ( ⁇ 4% for SOE ⁇ 250mWh for the remaining energy available). This estimate is sufficient in the context of an embedded application whose resources are limited.
- the set of quadruplets can be derived from experimental data. Before being used in the context of the present process, this set can be completed by interpolation.
- This interpolation can be performed in temperature, energy state and power.
- the more irregular the functions of the energy state with respect to the power of use and the temperature the greater the number of modeling points must be. It is conceivable to increase the number of modeling points only at the locations where the irregularities are located.
- the reference Z indicates such an irregularity. Increasing the number of points at the level of the irregularities only can make it possible to decrease the size of the memory containing the cartography with the detract from the simplicity of search in memory when running the application.
- Cartographies representing quadruplets can be computer-generated using scientific computing software such as matlab, mathcab, octave, scilab, etc., or simply be derived from experimental points as needed.
- the set of quadruplets used in the context of the determination of the energy state, resulting from experimental data completed or not, can be stored in a memory that will be used by a computer.
- the definition of the accumulator must be taken in the broad sense, and equally aims at an elementary accumulator or a plurality of elementary accumulators arranged in the form of a battery.
- the reference accumulator used for the tests comes from the manufacturer A123system and bears the reference ANR26650M1.
- Cartesian planes have been used above to best approximate the energy state value. It is possible to use instead Cartesian planes a linear interpolation by order 3 hyperplane in a fourth order space from the set of quadruplets. However this achievement will not be preferred because too greedy computing resources.
- SOEf can be compared to SOE [0] so that if the latter two are equal, ie the gauge has not moved, we still integrate the variation of energy at a pace next instead of redoing the calculation of Eni by inverse interpolation.
- the integration continues from iteration to iteration until a different energy state is found than the previous step. This allows to be more precise if a low power is debited for a long time.
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KR1020147036235A KR20150023473A (ko) | 2012-05-24 | 2013-05-24 | 전기화학 배터리의 전력 상태를 결정하기 위한 방법, 장치, 매체, 및 컴퓨터 프로그램 |
JP2015513216A JP2015518959A (ja) | 2012-05-24 | 2013-05-24 | 電気化学蓄電池のエネルギ状態を判定する方法、デバイス、媒体及びコンピュータプログラム |
US14/402,396 US20150142349A1 (en) | 2012-05-24 | 2013-05-24 | Method for determining a state of energy of an electrochemical accumulator, device, medium, and computer program |
EP13725355.5A EP2856188B1 (fr) | 2012-05-24 | 2013-05-24 | Procede de determination d'un etat d'energie d'un accumulateur electrochimique, dispositif, support et programme informatique |
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FR1254795 | 2012-05-24 | ||
FR1254795A FR2991105B1 (fr) | 2012-05-24 | 2012-05-24 | Procede de determination d'un etat d'energie d'un accumulateur electrochimique, dispositif, support et programme informatique |
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WO2013175006A1 true WO2013175006A1 (fr) | 2013-11-28 |
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US (1) | US20150142349A1 (fr) |
EP (1) | EP2856188B1 (fr) |
JP (1) | JP2015518959A (fr) |
KR (1) | KR20150023473A (fr) |
FR (1) | FR2991105B1 (fr) |
WO (1) | WO2013175006A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015197715A1 (fr) * | 2014-06-26 | 2015-12-30 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Procede de determination de points de fonctionnement caracteristiques d'une batterie a partir de points de fonctionnement initiaux associes a une cellule unitaire etalon du type destine a equiper ladite batterie |
EP3098894A4 (fr) * | 2015-02-23 | 2017-08-09 | NGK Insulators, Ltd. | Appareil de calcul de conditions de charge/décharge utilisable dans une batterie secondaire à type de fonctionnement à haute température |
WO2019184845A1 (fr) * | 2018-03-30 | 2019-10-03 | 比亚迪股份有限公司 | Véhicule électrique, et procédé et appareil de calcul d'état d'énergie (soe) de batterie d'alimentation |
Families Citing this family (7)
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FR3011084A1 (fr) * | 2013-09-25 | 2015-03-27 | St Microelectronics Grenoble 2 | Procede de determination de l’etat de charge d’une batterie d’un appareil electronique |
CN104459551A (zh) * | 2014-11-28 | 2015-03-25 | 山东理工大学 | 一种电动汽车动力电池能量状态估算方法 |
CN104951662B (zh) * | 2015-07-16 | 2017-11-07 | 中国科学院广州能源研究所 | 一种磷酸铁锂电池能量状态soe的估算方法 |
CN106443472B (zh) * | 2016-09-29 | 2018-11-09 | 江苏大学 | 一种新型的电动汽车动力电池soc估算方法 |
CN109507599A (zh) * | 2017-09-12 | 2019-03-22 | 北京奔驰汽车有限公司 | 一种动力电池soe的优化算法 |
CN110231579A (zh) * | 2019-06-14 | 2019-09-13 | 安徽锐能科技有限公司 | 一种基于电池被动均衡的soe估计方法 |
CN111487533A (zh) * | 2020-04-13 | 2020-08-04 | 北方工业大学 | 一种锂电池运行状态评估方法及系统 |
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- 2012-05-24 FR FR1254795A patent/FR2991105B1/fr not_active Expired - Fee Related
-
2013
- 2013-05-24 EP EP13725355.5A patent/EP2856188B1/fr active Active
- 2013-05-24 WO PCT/EP2013/060798 patent/WO2013175006A1/fr active Application Filing
- 2013-05-24 US US14/402,396 patent/US20150142349A1/en not_active Abandoned
- 2013-05-24 KR KR1020147036235A patent/KR20150023473A/ko not_active Application Discontinuation
- 2013-05-24 JP JP2015513216A patent/JP2015518959A/ja active Pending
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US5151865A (en) * | 1987-10-28 | 1992-09-29 | Grasslin Kg | Method and apparatus for determining the energy content value of electrochemical energy stores |
US5650712A (en) * | 1994-07-04 | 1997-07-22 | Nippon Soken, Inc. | Method for detecting remaining battery current, voltage, and temperature capacity by continuously monitoring |
US20040220758A1 (en) * | 2002-12-29 | 2004-11-04 | Evgenij Barsoukov | Circuit and method for measurement of battery capacity fade |
FR2947637A1 (fr) | 2009-07-01 | 2011-01-07 | Commissariat Energie Atomique | Procede de calibration d'un accumulateur electrochimique |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015197715A1 (fr) * | 2014-06-26 | 2015-12-30 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Procede de determination de points de fonctionnement caracteristiques d'une batterie a partir de points de fonctionnement initiaux associes a une cellule unitaire etalon du type destine a equiper ladite batterie |
FR3023005A1 (fr) * | 2014-06-26 | 2016-01-01 | Commissariat Energie Atomique | Procede de determination de points de fonctionnement caracteristiques d'une batterie a partir de points de fonctionnement initiaux associes a une cellule unitaire etalon du type destine a equiper ladite batterie |
EP3098894A4 (fr) * | 2015-02-23 | 2017-08-09 | NGK Insulators, Ltd. | Appareil de calcul de conditions de charge/décharge utilisable dans une batterie secondaire à type de fonctionnement à haute température |
US10295602B2 (en) | 2015-02-23 | 2019-05-21 | Ngk Insulators, Ltd. | Device for calculating charge/discharge condition adoptable in secondary battery of high-temperature operation type |
WO2019184845A1 (fr) * | 2018-03-30 | 2019-10-03 | 比亚迪股份有限公司 | Véhicule électrique, et procédé et appareil de calcul d'état d'énergie (soe) de batterie d'alimentation |
CN110333448A (zh) * | 2018-03-30 | 2019-10-15 | 比亚迪股份有限公司 | 电动汽车及动力电池的能量状态soe计算方法、装置 |
Also Published As
Publication number | Publication date |
---|---|
FR2991105A1 (fr) | 2013-11-29 |
JP2015518959A (ja) | 2015-07-06 |
EP2856188B1 (fr) | 2019-05-01 |
US20150142349A1 (en) | 2015-05-21 |
EP2856188A1 (fr) | 2015-04-08 |
KR20150023473A (ko) | 2015-03-05 |
FR2991105B1 (fr) | 2016-12-09 |
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