WO1995004937A1 - Procede de recalibrage d'un processeur de gestion d'energie de batteries - Google Patents
Procede de recalibrage d'un processeur de gestion d'energie de batteries Download PDFInfo
- Publication number
- WO1995004937A1 WO1995004937A1 PCT/FR1994/000933 FR9400933W WO9504937A1 WO 1995004937 A1 WO1995004937 A1 WO 1995004937A1 FR 9400933 W FR9400933 W FR 9400933W WO 9504937 A1 WO9504937 A1 WO 9504937A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- battery
- discharge
- complete
- electricity
- time
- Prior art date
Links
Classifications
-
- 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
- G01R31/3828—Arrangements for monitoring battery or accumulator variables, e.g. SoC using current integration
- G01R31/3832—Arrangements for monitoring battery or accumulator variables, e.g. SoC using current integration without measurement of battery voltage
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
- G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
- G01R19/16542—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies for batteries
Definitions
- the present invention relates to a method for recalibrating a battery energy management processor.
- An autonomous electric traction vehicle can only be used in urban areas provided that it knows as much as possible about the remaining autonomy that its traction storage batteries can provide.
- the remaining autonomy of the vehicle corresponds to the distance or the time during which the car can drive before exhausting the electric charge contained in these traction storage batteries.
- Knowledge of the remaining range of the vehicle requires knowledge of two factors. The first of these factors, subjective, relates to the consumption of the vehicle on future journeys. This consumption depends in particular on the road profile, the density of traffic and the driver's driving style.
- the second factor, objective concerns the charge that can be restored at all times by the traction battery.
- Current devices indicating the returnable charge, called gauges are based on a measurement of the voltage across the battery (Curtis type devices, etc.). The accuracy of these devices is less than 20% of the nominal capacity for a new battery, and deteriorates considerably depending on aging: the estimation error can exceed 50%.
- battery energy management processors which measure the quantities of electricity alternately extracted and stored in the batteries managed by these processors, as well as the evolution of the maximum capacity of the batteries throughout their life.
- the evaluation of the quantities of energy actually stored in the batteries is only approximate because the algorithm used is based on a weighted algebraic sum of the electrical intensities measured in series with the batteries managed and since the value of the maximum capacity of the batteries evolves strongly according to the age and the vagaries of use of the batteries.
- the errors made on each term of the algebraic sum make the accuracy of the prediction of the amount of available energy drift over time.
- the subject of the present invention is a method making it possible to cancel or greatly reduce the precision drift of the prediction of the amount of electrical energy available in a battery, this method making it possible to maintain a precision much better than that of known gauges, throughout the life of the battery.
- the method of the invention consists, after a determined period of time, in initiating a recalibration process for evaluating the amount of electrical energy contained in the battery, in fully recharging the battery, in detecting the end of fully recharging the battery, performing a partial discharge of the battery, measuring the quantity of electricity extracted during this discharge, putting the battery to rest for a determined period, fully discharging the battery at low intensity by measuring the quantity of electricity thus extracted from the battery, to add said two quantities of electricity measured to obtain the value of the maximum capacity of the battery at the time of recalibration.
- the present invention will be better understood on reading the detailed description of an embodiment, taken by way of nonlimiting example and illustrated by the appended drawing, the single figure of which is a diagram showing the evolution of the maximum capacity.
- Recalibration consists of a series of operations automatically controlled by a battery energy management processor and / or manual operations performed by the owner of the electric vehicle. This management processor, for example, of the type of the aforementioned known processors, also makes it possible to carry out the five main operations described below, called recalibration operations as a whole. 1st operation: the recalibration request:
- the energy management processor counts the time elapsed since the last recalibration. As soon as this duration exceeds a fixed limit (depending on the accuracy performance of the battery charge assessment algorithm), a signal is sent by the energy management processor to ask the driver to plan the actions recalibration as soon as possible.
- the signal may for example be a "request for recalibration" indicator placed on the vehicle dashboard and kept on until the last recalibration operation. In fact, from this moment, the accuracy of evaluation of the amount of energy remaining in the battery can no longer be guaranteed by the energy management processor.
- the end of full recharge is detected by the energy management processor. This detection can be ensured in several ways: for example by means of a signal emitted by the charger or by evaluation of the state of charge of the battery in charge by the energy management processor (the processor must then integrate load algorithms usable by the charger to judge when the full charge of the battery is reached).
- the information "end of full recharge” of the battery authorizes the following operation to be taken into account by the energy management processor.
- This signal can be materialized, for example, by rapidly flashing the "recalibration request” indicator.
- the driver of the vehicle uses his vehicle normally until he reaches at least a given discharge depth (for example: 10 to 20%, value displayed on the dashboard gauge counter, counter controlled by the energy management processor ).
- a signal authorizes the passage to the next phase.
- This signal can be materialized for example by the slow flashing of the "recalibration request" indicator.
- the energy management processor counts the Ah (Ampere-hours) extracted from the battery.
- the driver of the vehicle hands over his vehicle for a minimum imposed time (for example for a sealed lead-acid traction battery between 1 hour 30 minutes and 3 hours). During this period, the battery covers all of its available charge. Indeed, during the previous phase, driving regimes with strong currents stress the batteries and make a certain amount of charge inaccessible. This amount of charge becomes available again after the batteries have been put to rest (battery relaxation phenomenon).
- the energy control processor records this time.
- a signal starts (automatically or not) the next phase.
- This signal can be materialized for example by the slow flashing of the "recalibration request" indicator. Even partial recharging of the battery breaks the correct progress of the recalibration and requires starting from the start of the second operation.
- hoseth operation total discharge of the battery at low intensity - recording of the new reference value of Cmax (t):
- This phase automatically triggered by the end signal of the fourth phase, consists of the complete discharge of the battery at low intensity (for example ⁇ 1/5 of l 5 ), l 5 being the discharge current allowing to completely discharge the battery in five hours.
- This discharge is ensured by the connection of a secondary consumer of the vehicle (for example the headlights) by the energy management processor or by driving at low speed (for example, the driver limits by his driving the amount of energy not instantly accessible).
- the energy management processor disconnects the consumer as soon as: - either the minimum admissible voltage (Vmin) of the battery is reached (we monitor for example V (t) or V (t) / Vmin)),
- an "end of calibration” signal When reaching the minimum admissible battery voltage, an "end of calibration” signal is emitted. It causes the current value of the charge contained in the battery to be reset to zero, the initialization of Cmax (t) to the sum of the charges extracted from the battery during operations 3 and 5 and the extinction of the "request for recalibration ".
- the new value of Cmax (t), stored in the non-volatile memory of the battery energy management processor is used: - as a basis for evaluating the charge stored in the battery until the new recalibration request (see first operation),
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7506242A JPH08503306A (ja) | 1993-08-06 | 1994-07-26 | バッテリ・エネルギー管理プロセッサ再較正方法 |
US08/411,696 US5608325A (en) | 1993-08-06 | 1994-07-26 | Method of recalibrating a battery energy management processor |
CA002146347A CA2146347A1 (fr) | 1993-08-06 | 1994-07-26 | Procede de recalibrage d'un processeur de gestion d'energie de batteries |
EP94922305A EP0664005A1 (fr) | 1993-08-06 | 1994-07-26 | Procede de recalibrage d'un processeur de gestion d'energie de batteries |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9309714A FR2708747B1 (fr) | 1993-08-06 | 1993-08-06 | Procédé de recalibrage d'un processeur de gestion d'énergie de batteries. |
FR93/09714 | 1993-08-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995004937A1 true WO1995004937A1 (fr) | 1995-02-16 |
Family
ID=9450008
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1994/000933 WO1995004937A1 (fr) | 1993-08-06 | 1994-07-26 | Procede de recalibrage d'un processeur de gestion d'energie de batteries |
Country Status (6)
Country | Link |
---|---|
US (1) | US5608325A (fr) |
EP (1) | EP0664005A1 (fr) |
JP (1) | JPH08503306A (fr) |
CA (1) | CA2146347A1 (fr) |
FR (1) | FR2708747B1 (fr) |
WO (1) | WO1995004937A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2321315A (en) * | 1997-01-21 | 1998-07-22 | Silviu Puchianu | Estimating total working capacity of a battery |
US6133709A (en) * | 1997-01-21 | 2000-10-17 | Metrixx Limited | Signalling system |
WO2011122592A1 (fr) * | 2010-03-30 | 2011-10-06 | 三洋電機株式会社 | Module d'accumulation d'énergie, procédé de correction de la valeur de capacité d'une batterie d'accumulation, et système d'accumulation d'énergie |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2738613B1 (fr) * | 1995-09-08 | 1997-10-24 | Thomson Csf | Procede d'asservissement d'une servovalve hydraulique pouvant etre asservie en debit et en pression |
EP0864877A1 (fr) * | 1997-03-11 | 1998-09-16 | Siemens Aktiengesellschaft | Dispositif et méthode de charpement respectivement déchargement d'un accumulateur de type et/ou capacité indetérminé pour un dispositif électrique ou électronique |
US6018227A (en) * | 1998-06-22 | 2000-01-25 | Stryker Corporation | Battery charger especially useful with sterilizable, rechargeable battery packs |
FR2793912B1 (fr) | 1999-05-21 | 2001-08-10 | Crouzet Automatismes | Outil universel de compilation de graphes |
US20020186237A1 (en) * | 2001-05-16 | 2002-12-12 | Michael Bradley | Method and system for displaying analytics about a website and its contents |
DE102010060403A1 (de) * | 2010-11-08 | 2012-05-10 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Verfahren und Vorrichtung zur Bestimmung eines Ladezustands eines elektrischen Energiespeichers |
US10164450B2 (en) * | 2015-08-17 | 2018-12-25 | Ford Global Technologies, Llc | Early alert of battery thermal state based on voltage |
CN109828220B (zh) * | 2019-03-21 | 2020-02-07 | 北京理工大学 | 一种锂离子电池健康状态线性评估方法 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4377787A (en) * | 1979-08-14 | 1983-03-22 | Shin-Kobe Electric Machinery Co., Ltd. | System for measuring state of charge of storage battery |
US4388618A (en) * | 1981-01-07 | 1983-06-14 | Curtis Instruments, Inc. | Battery state of charge indicator operating on bidirectional integrations of terminal voltage |
DE3213516C1 (en) * | 1982-04-10 | 1983-10-06 | Elek Schen Strassenverkehr Mbh | Method and arrangement for determining the state of aging of a secondary battery |
GB2148518A (en) * | 1980-06-28 | 1985-05-30 | Lucas Ind Plc | Battery state of charge evaluation |
EP0225106A1 (fr) * | 1985-11-19 | 1987-06-10 | British Aerospace Public Limited Company | Indicateur de l'état de charge d'une batterie |
EP0423483A2 (fr) * | 1989-10-14 | 1991-04-24 | Mercedes-Benz Ag | Procédé pour déterminer l'état d'un accumulateur |
EP0481743A1 (fr) * | 1990-10-16 | 1992-04-22 | Honda Giken Kogyo Kabushiki Kaisha | Méthode pour indiquer la charge résiduelle d'une batterie d'un véhicule à impulsion électrique |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5539318A (en) * | 1992-07-16 | 1996-07-23 | Toyota Jidosha Kabushiki Kaisha | Residual capacity meter for electric car battery |
-
1993
- 1993-08-06 FR FR9309714A patent/FR2708747B1/fr not_active Expired - Fee Related
-
1994
- 1994-07-26 JP JP7506242A patent/JPH08503306A/ja active Pending
- 1994-07-26 US US08/411,696 patent/US5608325A/en not_active Expired - Fee Related
- 1994-07-26 CA CA002146347A patent/CA2146347A1/fr not_active Abandoned
- 1994-07-26 WO PCT/FR1994/000933 patent/WO1995004937A1/fr not_active Application Discontinuation
- 1994-07-26 EP EP94922305A patent/EP0664005A1/fr not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4377787A (en) * | 1979-08-14 | 1983-03-22 | Shin-Kobe Electric Machinery Co., Ltd. | System for measuring state of charge of storage battery |
GB2148518A (en) * | 1980-06-28 | 1985-05-30 | Lucas Ind Plc | Battery state of charge evaluation |
US4388618A (en) * | 1981-01-07 | 1983-06-14 | Curtis Instruments, Inc. | Battery state of charge indicator operating on bidirectional integrations of terminal voltage |
DE3213516C1 (en) * | 1982-04-10 | 1983-10-06 | Elek Schen Strassenverkehr Mbh | Method and arrangement for determining the state of aging of a secondary battery |
EP0225106A1 (fr) * | 1985-11-19 | 1987-06-10 | British Aerospace Public Limited Company | Indicateur de l'état de charge d'une batterie |
EP0423483A2 (fr) * | 1989-10-14 | 1991-04-24 | Mercedes-Benz Ag | Procédé pour déterminer l'état d'un accumulateur |
EP0481743A1 (fr) * | 1990-10-16 | 1992-04-22 | Honda Giken Kogyo Kabushiki Kaisha | Méthode pour indiquer la charge résiduelle d'une batterie d'un véhicule à impulsion électrique |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2321315A (en) * | 1997-01-21 | 1998-07-22 | Silviu Puchianu | Estimating total working capacity of a battery |
US6133709A (en) * | 1997-01-21 | 2000-10-17 | Metrixx Limited | Signalling system |
US6404166B1 (en) | 1997-01-21 | 2002-06-11 | Metrixx Limited | Signalling system |
WO2011122592A1 (fr) * | 2010-03-30 | 2011-10-06 | 三洋電機株式会社 | Module d'accumulation d'énergie, procédé de correction de la valeur de capacité d'une batterie d'accumulation, et système d'accumulation d'énergie |
US9203247B2 (en) | 2010-03-30 | 2015-12-01 | Panasonic Intellectual Property Management Co., Ltd. | Power storage unit, correction method for capacity values of storage batteries, and power storage system |
Also Published As
Publication number | Publication date |
---|---|
FR2708747B1 (fr) | 1995-09-01 |
US5608325A (en) | 1997-03-04 |
EP0664005A1 (fr) | 1995-07-26 |
CA2146347A1 (fr) | 1995-02-16 |
FR2708747A1 (fr) | 1995-02-10 |
JPH08503306A (ja) | 1996-04-09 |
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