EP3377912A1 - Dispositif de diagnostic de batterie - Google Patents
Dispositif de diagnostic de batterieInfo
- Publication number
- EP3377912A1 EP3377912A1 EP16809995.0A EP16809995A EP3377912A1 EP 3377912 A1 EP3377912 A1 EP 3377912A1 EP 16809995 A EP16809995 A EP 16809995A EP 3377912 A1 EP3377912 A1 EP 3377912A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- battery
- diagnostic device
- parameter
- diagnostic
- measuring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
Definitions
- the present invention generally relates to a battery diagnostic device, and in particular, a battery diagnostic device mounted on a PHEV type motor vehicle.
- ISO 26262 defines several levels of safety integrity (Automotive Safety Integrity Levels or ASIL). These rated requirements from A (the least critical) to D (the most critical) make it possible to verify that the components of the systems produced by the OEMs and manufacturers meet the safety objectives of the functions. To ensure these required levels of security, the requirements of ISO 26262 apply to different areas: organizational, documentary and technical throughout the lifecycle of a vehicle.
- ASIL Automotive Safety Integrity Levels
- PHEV-type motor vehicles that is to say, the plug-in electric hybrid vehicle, carry a battery and an electrical architecture for diagnosing the battery, preferably a 12V battery.
- the vehicle comprises a diagnostic device such as a vehicle battery charging estimation box (BECB) which makes it possible to diagnose the 12V battery continuously, however this diagnostic device does not generally cover a high level of ASIL.
- BECB vehicle battery charging estimation box
- ASIL B higher level
- the solicitation generated by the first start allows a test power that gives a good indication of the health of the battery. This condition is true in a classical architecture.
- the solicitation of the battery while driving remains low, the alternator providing the greater part of the energy, and the battery provides the power for actuators (DAE, ESP, .. .) whose operating time is relatively short.
- DAE actuators
- a battery monitoring device constantly calculates the state of charge of the battery, and thus indicates an information of its health state sufficient for the phases of life 2 and 3.
- BECB battery monitoring device
- DE 102014004791 discloses the use of a
- DC / DC in a PHEV electrical architecture to perform a diagnosis of the connection between the on-board network and the battery.
- the DC / DC produces a signal modulated between 50 and 200 Hz, then a device calculates the resistance across the battery and determines the quality of connection.
- this type of device does not improve the level of ASIL as required by the new standard.
- An object of the present invention is to meet the disadvantages of the documents of the prior art mentioned above and in particular, first of all, to propose a battery diagnostic device allowing the battery to comply with the new standards of security.
- a first aspect of the invention relates to a battery diagnostic device for a motor vehicle comprising a first measuring device arranged to continuously measure at least one parameter of the battery, at least one diagnostic means arranged to perform a diagnosis of the battery from the measurement of the at least one measured parameter, characterized in that the device further comprises a second measuring device arranged to measure in a specific manner the at least one parameter of the battery, and in that the at least one diagnostic means is arranged to determine a faulty battery condition when the data measured by the first and second measuring members differ by more than a predetermined threshold from each other.
- the diagnostic units are separated and augmented so as to have a diagnosis on the diagnosis to increase the ASIL and to obtain a distributed diagnostic architecture to better control the level of ASIL of each organ.
- the battery is part of an on-board network and the second measuring device is furthermore arranged to isolate a first sub-network comprising the battery, the first measuring device and a power source from the rest of the network. edge.
- the power source is a starter or an alternator-starter.
- the at least one measured parameter of the battery is at least one of a voltage, a current, a temperature and a state of charge. In this way, measurements can be made over a wide spectrum of data.
- the measured voltage is a no-load voltage.
- the measured voltage is very reliable.
- the measured current is a charging and / or discharging current. In this way, the measured current is very reliable.
- the at least one diagnostic means is implemented in at least one of the first and second measuring members.
- the at least one diagnostic means avoids adding a possibly large additional component.
- the second measuring member is arranged to measure the at least one parameter periodically. In this way, the diagnosis is repeated to improve the ASIL.
- the second measuring member is arranged to measure the at least one parameter according to a predefined pattern.
- a measurement pattern adapted according to the electrical network and the battery mounted in the vehicle.
- a particularly interesting embodiment consists in that the first measuring member is a charge estimation box of the battery. In this way, continuous measurement is performed reliably during operation.
- a second aspect of the invention is a motor vehicle comprising at least one battery diagnostic device according to the first aspect of the invention.
- FIG. 1 shows schematically a battery diagnostic device for a motor vehicle according to a preferred embodiment of the present invention.
- Fig. 1 shows a battery diagnostic device for a motor vehicle according to a preferred embodiment of the present invention. It comprises in particular a first measuring device 3, preferably a charge estimation box of the battery, is arranged to continuously measure at least one parameter of the battery, for example a charge or discharge current or a voltage drums. It also comprises a second measuring device 2 arranged to measure in a specific manner the at least one parameter of the battery, for example a charging or discharging current or a battery voltage as for the first measuring device.
- a first measuring device 3 preferably a charge estimation box of the battery
- the battery for example a charge or discharge current or a voltage drums.
- a second measuring device 2 arranged to measure in a specific manner the at least one parameter of the battery, for example a charging or discharging current or a battery voltage as for the first measuring device.
- It also comprises at least one diagnostic means 1 arranged to perform a diagnosis of the battery from the measurement of the at least one parameter, and which is arranged to determine a faulty battery state when the data measured by the first and second organs different from a difference greater than a predetermined threshold with respect to each other.
- This diagnostic means is implemented by software and is implemented in at least one of the first and second measuring members 3, 2 or any member having a computing power.
- the battery is part of an on-board network and that the second measuring member 2 is furthermore arranged to isolate a first sub-network comprising the battery, the first measuring member 3 and a source such as a starter or an alternator-starter, of the remainder of the network which will thus constitute a second sub-network separate from the first sub-network.
- the second measuring member 2 comprises a measuring means on the one hand and a relay, for example using a MOS, on the other hand (or any other means for isolating the subnet).
- the at least one measured parameter of the battery is at least one of a voltage, a current, a temperature and a state of charge.
- the measured voltage is a no-load voltage and the measured current is a charging and / or discharging current.
- the second measuring member 2 is arranged to measure the at least one parameter periodically, for example every few milliseconds, and in a predefined pattern, that is to say, by example 50 amps for 700 milliseconds then 100 amperes for 200 milliseconds.
- the invention also relates to a motor vehicle comprising at least one diagnostic device described above.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
- Tests Of Electric Status Of Batteries (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1561175A FR3044099B1 (fr) | 2015-11-20 | 2015-11-20 | Dispositif de diagnostic de batterie |
| PCT/FR2016/053017 WO2017085429A1 (fr) | 2015-11-20 | 2016-11-18 | Dispositif de diagnostic de batterie |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3377912A1 true EP3377912A1 (fr) | 2018-09-26 |
Family
ID=55135385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16809995.0A Ceased EP3377912A1 (fr) | 2015-11-20 | 2016-11-18 | Dispositif de diagnostic de batterie |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3377912A1 (fr) |
| CN (1) | CN108351388B (fr) |
| FR (1) | FR3044099B1 (fr) |
| WO (1) | WO2017085429A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017218898B4 (de) | 2017-10-23 | 2025-02-13 | Volkswagen Aktiengesellschaft | Kontrollsystem für ein Batteriesystem |
| FR3087393B1 (fr) * | 2018-10-23 | 2020-10-23 | Psa Automobiles Sa | Procede de determination de l’etat de vieillissement d’une batterie electrochimique |
| FR3093187B1 (fr) * | 2019-02-21 | 2021-02-19 | Psa Automobiles Sa | Procédé de diagnostic d’une batterie d’un véhicule automobile |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1397174B1 (it) * | 2009-10-27 | 2013-01-04 | F I A M M Spa | Metodo per la rilevazione continua dell'efficienza di una batteria specie di una batteria installata in autoveicoli e dispositivo utilizzante tale metodo |
| EP2761317A2 (fr) * | 2011-09-30 | 2014-08-06 | KPIT Technologies Limited | Système et procédé permettant de déterminer l'état de charge d'une batterie |
| US9018913B2 (en) * | 2012-05-18 | 2015-04-28 | Caterpillar Inc. | System for determining battery impedance |
| US9108524B2 (en) * | 2013-10-22 | 2015-08-18 | GM Global Technology Operations LLC | Battery SOC estimation with automatic correction |
-
2015
- 2015-11-20 FR FR1561175A patent/FR3044099B1/fr active Active
-
2016
- 2016-11-18 WO PCT/FR2016/053017 patent/WO2017085429A1/fr not_active Ceased
- 2016-11-18 EP EP16809995.0A patent/EP3377912A1/fr not_active Ceased
- 2016-11-18 CN CN201680067469.4A patent/CN108351388B/zh active Active
Also Published As
| Publication number | Publication date |
|---|---|
| FR3044099A1 (fr) | 2017-05-26 |
| CN108351388A (zh) | 2018-07-31 |
| WO2017085429A1 (fr) | 2017-05-26 |
| FR3044099B1 (fr) | 2018-11-16 |
| CN108351388B (zh) | 2021-06-25 |
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