EP4359252A1 - Methode de communication de variables sur un bus de communication de véhicule automobile - Google Patents
Methode de communication de variables sur un bus de communication de véhicule automobileInfo
- Publication number
- EP4359252A1 EP4359252A1 EP22723161.0A EP22723161A EP4359252A1 EP 4359252 A1 EP4359252 A1 EP 4359252A1 EP 22723161 A EP22723161 A EP 22723161A EP 4359252 A1 EP4359252 A1 EP 4359252A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- computer
- control unit
- motor vehicle
- high voltage
- communication method
- 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.)
- Withdrawn
Links
Classifications
-
- 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]
- G01R31/371—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] with remote indication, e.g. on external chargers
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
- G07C5/0808—Diagnosing performance data
-
- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- 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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
- H02J7/80—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including monitoring or indicating arrangements
- H02J7/82—Control of state of charge [SOC]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
-
- 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
- B60L2260/00—Operating Modes
- B60L2260/40—Control modes
- B60L2260/44—Control modes by parameter estimation
-
- 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
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
- G01R31/007—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks using microprocessors or computers
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
Definitions
- TITLE METHOD FOR COMMUNICATING VARIABLES ON A MOTOR VEHICLE COMMUNICATION BUS
- the technical context of the present invention is that of the electrical management of an electrified motor vehicle of the electric or hybrid type. More particularly, the invention relates to communication between several electrical components of the motor vehicle via a communication bus. In particular, the invention relates to a method for communicating functional variables of the electrified motor vehicle.
- each electrical component transmits on one or more of these communication buses or reads from one of said communication buses one or more digital data representative of functional parameters of the electrified motor vehicle or representative of variables of state of certain other electrical organs.
- eCAN, Can HS1, or Can HS2 buses are known in particular, which make it possible to implement a powertrain of the electrified motor vehicle.
- Each communication bus has its own characteristics, in particular in terms of bandwidth, type of data transmitted or available. More particularly, each piece of information circulating on these communication buses follows a particular formalism—a frame—defined beforehand in a characteristic matrix of the communication bus. By way of example, such a frame includes in particular an identifier, a position of the data transmitted in the frame, a dimension of the frame, etc. [5] This formalism of a data frame thus enables each electrical component communicating with the communication bus to be able to interpret such a frame in order to extract the information sought therefrom.
- one of the structural parameters exchanged between several electrical components of electrified motor vehicles is the charge level of the high voltage electric battery.
- the storage capacities of these high-voltage electric batteries are constantly increasing, thus imposing transfers of parameters representative of these charge levels according to ever-increasing values.
- large values lead to an increase in the corresponding digital capacities on the data frames, which is not always possible depending on the communication buses and the space available inside such data frames.
- the object of the present invention is to propose a new method of communication in order to at least largely respond to the above problems and also to lead to other advantages.
- Another object of the invention is to make it possible to transfer larger values between two electrical components without modifying the matrix defining the data frames.
- Another object of the invention is to provide a method that is easy to implement and economical.
- At least one of the aforementioned objectives is achieved with a method for communicating a structural parameter of a high voltage electric battery of an electrified motor vehicle, between a computer of the battery high voltage electrical and a powertrain control unit, the communication method comprising the following steps:
- [15] - a step of calculating a compressed value of the structural parameter and resulting from a division of the real value by a compression factor, so that the compressed value has, in a given numerical system, a number of digit lower than the number of digits of the actual value represented in the same digital system, the calculation step being implemented by the computer;
- the high voltage electric battery is the traction battery of the electrified motor vehicle.
- the high-voltage electric battery is of the type of a lithium-ion battery.
- the structural parameter is representative of an operating state or a technical characteristic of the high voltage electric battery.
- This structural parameter is of the numeric type. It therefore takes on a certain value, its real value as determined at computer level or defined by the computer. This value is expressed in the number system.
- the real value associated with the structural parameter of the high voltage electric battery is an integer.
- the compression factor is a multiplicative coefficient which, applied to the real value, makes it possible to define the compressed value of the structural parameter of the high voltage electric battery.
- the multiplicative coefficient is different from 1.
- the compression factor is a real number, integer or decimal, preferably positive.
- the structural parameter of the high voltage electric battery must be transmitted from the computer to the control unit.
- the computer performs this transformation during the recovery step in order to modify the real value of the structural parameter.
- the compressed value thus obtained is advantageously lower than the actual value. More particularly, the compressed value is sufficiently lower than the real value of the structural parameter so that the compressed value, expressed in the same numerical system as the real value, is represented by a number of digits lower than that necessary to represent the actual value.
- Such a compressed value can then be transferred to the control unit via the communication bus without modifying the data frame, and without overflow.
- the communication method in accordance with the first aspect of the invention advantageously comprises at least one of the improvements below, the technical characteristics forming these improvements being able to be taken alone or in combination:
- the compression factor is greater than 1.
- the compression factor is greater than or equal to 1.092;
- the compression factor is equal to 1.34;
- the compression factor is stored in a computer memory area and/or in a control unit memory area.
- the subject of the invention is an electronic system for an electrified motor vehicle, the electronic system comprising electronic components configured to implement the communication method in accordance with the first aspect of the invention or according to any of its improvements, electronic components comprising:
- control unit for a powertrain of the electrified motor vehicle, the control unit being configured to control the operation of the powertrain;
- the invention also extends to an electrified motor vehicle comprising:
- the electrified motor vehicle is of the type of an electric or hybrid vehicle, the rechargeable high-voltage electric battery being of the type of a high-voltage electric battery configured to supply high-voltage electric power to a traction chain of the vehicle electrified car.
- FIG.1 schematically illustrates an electrified motor vehicle according to the third aspect of the invention
- FIG.2 illustrates a synoptic view of the communication method according to the first aspect of the invention.
- FIGURE 1 illustrates an embodiment of an electrified motor vehicle 1 able to implement the communication method 9 according to the invention.
- the electrified motor vehicle 1 comprises a powertrain 6 provided with a control unit 2, an electric traction machine powered by a high voltage electric battery 3 - called traction - and a computer 4 of the high voltage electric battery 3.
- the high voltage electric battery 3 generally provides several hundred volts, for example 450V, in order to ensure the supply of electric energy to a traction chain of the electrified motor vehicle 1.
- the high voltage electric battery 3 comprises several electric cells, for example of the Lithium-ion type.
- the high voltage electric battery 3 collaborates with the computer 4.
- Computer 4 is configured to control the management and operation of high voltage battery 3.
- the control unit 2 is configured to control the management and operation of the powertrain 6.
- the computer 4 and the control unit 2 communicate with each other via a communication bus 5 on structural parameters of the electrified motor vehicle 1 are exchanged.
- computer 4 and/or control unit 2 are equipped with an integrated circuit computer and electronic memories.
- the computer 4, the control unit 2 and the communication bus 5 together form an electronic system 7 configured to implement the communication method according to the first aspect of the invention
- FIGURE 2 illustrates an exemplary embodiment of the communication method 9 of a structural parameter of the high voltage electric battery 3, between the computer 4 and the control unit 2.
- Such a communication method comprises the following steps:
- the communication method 9 is particularly suitable for the transmission of a state of charge of the high voltage electric battery 3.
- the new generation high voltage electric batteries 3 for electrified motor vehicles 1 have higher load capacities than previous versions, resulting in higher load level values to be transmitted via the communication bus 5.
- the computer 4 divides - during the calculation step 92 - the real value of the state of charge of the high voltage electric battery 3 by the compression factor which makes it possible to bring the compressed value which will be transmitted on the communication bus 5 on 16 bits, that is to say one less than that expected initially.
- the compression coefficient is greater than 1, and more particularly equal to 1.34.
- This number - the compressed value of the state of charge of the high voltage electric battery 3 - can thus be easily transmitted - during the transmission step 93 - from the computer 4 to the control unit 2 by the communication bus 5 without capacity overflow and without having to modify the structure of the frames exchanged.
- the compressed value is divided by the same compression factor in order to find, at the level of the control unit 2 and during the recovery step 94, the real value the state of charge of the high voltage electric battery 3.
- the invention is thus simple to implement and solves the technical problem.
- the invention relates to a method 9 of communication of digital data between several electrical components of an electrified motor vehicle 1, via a communication bus 5, the communication method comprising a transformation of the capacity of the representative number digital data to be transmitted via the communication bus 5 in order to reduce said capacity by at least one digit and thus be able to transmit larger numbers without modifying the structure of the communication bus 5 or its communication protocol.
- This transformation is performed upstream of the communication bus 5, and an inverse transformation is applied downstream of the communication bus 5 in order to find the initial number representative of the digital data transmitted.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Sustainable Development (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Small-Scale Networks (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2106620A FR3124283B1 (fr) | 2021-06-22 | 2021-06-22 | Methode de communication de variables sur un bus de communication de véhicule automobile |
| PCT/FR2022/050732 WO2022269146A1 (fr) | 2021-06-22 | 2022-04-19 | Methode de communication de variables sur un bus de communication de véhicule automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4359252A1 true EP4359252A1 (fr) | 2024-05-01 |
Family
ID=77021560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22723161.0A Withdrawn EP4359252A1 (fr) | 2021-06-22 | 2022-04-19 | Methode de communication de variables sur un bus de communication de véhicule automobile |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4359252A1 (fr) |
| CN (1) | CN117597260A (fr) |
| FR (1) | FR3124283B1 (fr) |
| WO (1) | WO2022269146A1 (fr) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020148746A1 (fr) * | 2019-01-20 | 2020-07-23 | Arilou Information Security Technologies Ltd. | Système et procédé de compression de données en fonction d'une position de données dans une structure de trames |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1339136A (en) | 1970-09-18 | 1973-11-28 | Atomic Energy Authority Uk | Heat exchangers |
| DE102011086612A1 (de) * | 2011-11-18 | 2013-05-23 | Robert Bosch Gmbh | Verfahren zum Übertragen von Daten in einer Batterie |
| DE102012208444A1 (de) * | 2012-05-21 | 2013-11-21 | Robert Bosch Gmbh | Sensorvorrichtung für eine Zelle, Batterieelement und Sensorsystem für einen mehrzelligen elektrischen Energiespeicher sowie Verfahren zur Kommunikation für eine Sensorvorrichtung |
| FR3019958B1 (fr) * | 2014-04-14 | 2017-08-11 | Valeo Equip Electr Moteur | Procede et dispositif de communication d'un regulateur de tension d'un alternateur de vehicule automobile sur un reseau embarque, regulateur de tension et alternateur correspondants |
| DE102014215849A1 (de) * | 2014-08-11 | 2016-02-11 | Robert Bosch Gmbh | Steuerung und/oder Regelung für eine wenigstens zwei elektrisch in Reihe zueinander schaltbare Batteriezellen aufweisende Sekundärbatterie |
| DE102016013702A1 (de) * | 2016-11-17 | 2018-05-17 | Man Truck & Bus Ag | Traktionsenergiespeichersystem mit Betriebsgrenzenbestimmung |
-
2021
- 2021-06-22 FR FR2106620A patent/FR3124283B1/fr active Active
-
2022
- 2022-04-19 WO PCT/FR2022/050732 patent/WO2022269146A1/fr not_active Ceased
- 2022-04-19 CN CN202280044838.3A patent/CN117597260A/zh active Pending
- 2022-04-19 EP EP22723161.0A patent/EP4359252A1/fr not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020148746A1 (fr) * | 2019-01-20 | 2020-07-23 | Arilou Information Security Technologies Ltd. | Système et procédé de compression de données en fonction d'une position de données dans une structure de trames |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022269146A1 (fr) | 2022-12-29 |
| FR3124283A1 (fr) | 2022-12-23 |
| CN117597260A (zh) | 2024-02-23 |
| FR3124283B1 (fr) | 2023-11-17 |
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