Method and device for controlling a system for displaying a charge status bar of an electrical energy storage system of a vehicle

Abstract

The present invention relates to a method and device for controlling a system for displaying a charging status bar of an electrical energy storage system of a vehicle. The charging status bar may represent a charging power value and a first maximum charging power limit value. If a received second maximum charging power limit value (81) is greater than the first maximum charging power limit value then the charging status bar represents the charging power value and a replacement maximum charging power limit value determined from the second maximum charging power limit value (82). Otherwise the charging status bar represents the charging power value and the first and second maximum charging power limit values ​​(83). Figure for abstract: Figure 9

Description

Title of the invention: Method and device for controlling a system for displaying a charge status bar of an electrical energy storage system of a vehicle Technical field

[0001] The present invention relates to a method and device for controlling a system for displaying a charge status bar of an electrical energy storage system of a vehicle.

[0002] The present invention applies to electrical energy storage systems on board a full battery electric vehicle or a rechargeable hybrid vehicle. Technological background

[0003] Some contemporary vehicles have several screens on board to display information useful to the driver for driving the vehicle as well as comfort information, such as, for example, information for interacting with the infotainment system, also called the IVI system (from the English "In-Vehicle Infotainment" or in French "Infodivertissement embargo"), of the vehicle.

[0004] Among these screens, it is known to incorporate one or more LCD (Liquid Crystal Display) type screens, for example TFT (Thin-Film Transistor) type screens, or OLED (Organic Light-Emitting Diode) type screens.

[0005] The integration of such screens makes it possible, for example, to control, via a graphical Human-Machine Interface (HMI) displayed on such screens, the operating status of the systems embedded in the vehicle, for example the AD AS systems (from the English “Advanced Driver-Assistance System” or in French “Advanced Driving Assistance System”).

[0006] The J1979-3 standard requires zero-emission vehicles to display data on the HMI upon request from a user, such as charge rate parameters when recharging the electric energy storage system of such vehicles in a specific format (alphanumeric, readable and with a limited number of screens or submenus).

[0007] Two charging rate parameters are required: a charging power value (actual charging rate) of the energy storage system and a maximum charging power limit value (actual maximum charging rate) that the energy storage system energy storage can achieve in its current state.

[0008] The value of the charging power of the energy storage system, which will subsequently be called the VPR value, reflects the real-time charging power measured at the input of the electrical energy storage system. This parameter represents the quantity of energy measured at the energy storage system during the recharging of the electrical energy storage system.

[0009] The maximum charging power limit value of the energy storage system, which will hereinafter be called the VPM value, reflects the charge acceptance capacity of the electrical energy storage system at a given time. It reflects the real-time charging power limit of the electrical energy storage system. It takes into account the temperature and / or protection functions of the battery of the electrical energy storage system, for example. It is considered as a charging power limit value that the energy storage system is authorized to accept at a given time.

[0010] Obviously, the VPR value is limited by the VPM value but also by the limitations of the charging station which are linked to the type of charging current used (alternating current abbreviated as AC or direct current abbreviated as DC).

[0011] There are DC type charging stations allowing a VPM value of 20kW to 350kW or AC type charging stations (230V with 16, 32 or 64A) allowing a VPM value of 2kW to 44kW.

[0012] In the case of an AC type charging station, the VPM value can also be limited by the maximum power of the charger on board the vehicle (from 3 kW to 22 kW).

[0013] To improve user understanding when recharging the electrical energy storage system, these charge rate parameters must be displayed in the form of a gauge most often represented by a charge status bar representing the VPR value and the VPM value.

[0014] [Fig. 1] schematically illustrates a charge status bar which represents a VPR value which can extend up to the VPM value of the storage system according to the state of the art.

[0015] For example, the VPM value is equal to a VPM1 value equal to 180kW while the VPR value is equal to a VPR1 value equal to 100 kW.

[0016] [Fig.2] schematically illustrates an example of control of the charge status bar according to the state of the art.

[0017] If the VPM value decreases due to, for example, temperature (colder or warmer) or battery protection functions of the electrical energy storage system, for example, going from the value VPM1 to VPM2, the grayed-out part of the status bar representing the VPR value increases while the VPR value remains equal to the VPR1 value, which creates a false illusion for the user who then thinks that the VPR value has increased. But this effect is only due to the decrease in the VPM value.

[0018] In the example, the VPM value increased to 150 kW (VPM2). The VPR value remained constant at 100 kW but the visual effect suggests that the VPR value increased.

[0019] The evolution of the charge status bar during the charging process can therefore be confusing when the VPM value decreases during a recharge of the electrical energy storage system. Summary of the present invention

[0020] An object of the present invention is to solve at least one of the problems of the technological background described above.

[0021] Another object of the present invention is to improve the display control of charge rate parameters of an electrical energy storage system.

[0022] According to a first aspect, the present invention relates to a method for controlling a system for displaying a charge status bar of an electrical energy storage system of a vehicle during recharging of a battery of the electrical storage system of the vehicle, the charge status bar being displayed on a screen of the display system, the charge status bar representing a charging power value of the electrical energy storage system and a first maximum charging power limit value, said method being implemented by a processor and comprising the following steps: - receipt of a second maximum charging power limit value; - if the second maximum charging power limit value is greater than the first maximum charging power limit value then the charging status bar display system is controlled so that the charging status bar represents the charging power value of the electrical energy storage system and an alternative maximum charging power limit value determined from the second maximum charging power limit value; - if the second maximum charging power limit value is less than the first maximum charging power limit value then the charging status bar display system is controlled so that the charging status bar represents the charging power value of the electrical energy storage system and the first maximum charging power limit value and so that the charging status bar represents the second maximum charging power limit value.

[0023] The method makes it possible to control the display of a charge status bar which represents a VPM value which has been reached at least once but which may no longer be reached or may not be reached at each recharge.

[0024] The method avoids having to provide a program on a vehicle computer which defines the actual maximum charging power value according to the constraints of the vehicle's electrical energy storage system and / or a charging station used.

[0025] The method makes it possible to display a charging status bar which does not mislead a user who can rely on the display of the charging rate parameters even in the event of temperature variations or triggering of protection functions of a battery of the electrical energy storage system.

[0026] According to a variant, the first maximum charging power limit value is obtained from a memory.

[0027] According to a variant, the first maximum charging power limit value is different depending on the type of energy used to recharge the electrical energy storage system.

[0028] According to a variant, the maximum replacement load power limit value belongs to a determined set of maximum replacement load power limit values.

[0029] According to a variant, the set of replacement maximum load power limit values ​​comprising a first replacement maximum load power limit value and a second replacement maximum load power limit value greater than the first replacement maximum load power limit value, the determined replacement maximum load power limit value is equal to the second replacement maximum load power limit value if the second maximum load power limit value is greater than the first replacement maximum load power limit value and less than or equal to the second replacement maximum load power limit value.

[0030] The method allows the determination of a maximum charging power limit value by self-learning without using additional data flows, thus limiting the impact of this method in terms of bandwidth on the vehicle's on-board communication networks such as CAN buses for example.

[0031] According to a variant, the first maximum charging power limit value is equal to the first replacement maximum charging power limit value.

[0032] According to a second aspect, the present invention relates to a device for controlling a system for displaying a charge status bar of an electrical energy storage system of a vehicle, the device comprising a memory associated with a processor configured for implementing the steps of the method according to the first aspect of the present invention.

[0033] According to a third aspect, the present invention relates to a vehicle, for example of automobile type, comprising a device as described above according to the second aspect of the present invention.

[0034] According to a fourth aspect, the present invention relates to a computer program which comprises instructions adapted for executing the steps of the method according to the first aspect of the present invention, in particular when the computer program is executed by at least one processor.

[0035] Such a computer program may use any programming language, and be in the form of source code, object code, or intermediate code between source code and object code, such as in a partially compiled form, or in any other desirable form.

[0036] According to a fifth aspect, the present invention relates to a computer-readable recording medium on which is recorded a computer program comprising instructions for carrying out the steps of the method according to the first aspect of the present invention.

[0037] On the one hand, the recording medium may be any entity or device capable of storing the program. For example, the medium may comprise a storage means, such as a ROM memory, a RAM memory, a CD-ROM or a microelectronic circuit type ROM memory, or a magnetic recording means or a hard disk.

[0038] Furthermore, this recording medium may also be a transmissible medium such as an electrical or optical signal, such a signal being able to be conveyed via an electrical or optical cable, by conventional or hertzian radio or by self-directed laser beam or by other means. The computer program according to the present invention may in particular be downloaded from an Internet-type network.

[0039] Alternatively, the recording medium may be an integrated circuit in which the computer program is incorporated, the integrated circuit being adapted to perform or to be used in performing the method in question. Brief description of the figures

[0040] Other characteristics and advantages of the present invention will emerge from the description of the particular and non-limiting exemplary embodiments of the present invention below, with reference to the appended figures 1 to 9, in which:

[0041] [Fig-1] schematically illustrates a charge status bar which represents a charging power value which can extend up to a maximum charging power limit value of an electrical energy storage system according to the state of the art.

[0042] [Fig.2] schematically illustrates an example of display control of the charging status bar according to the state of the art.

[0043] [Fig.3] schematically illustrates an environment comprising an electric vehicle 10, according to a particular exemplary embodiment of the present invention.

[0044] [Fig.4] schematically illustrates a part of the passenger compartment of a vehicle, according to a particular exemplary embodiment of the present invention.

[0045] [Fig.5] schematically illustrates an example of display control of the charge status bar according to a particular exemplary embodiment of the present invention.

[0046] [Fig.6] schematically illustrates an example of display control of the charge status bar according to a particular exemplary embodiment of the present invention.

[0047] [Fig.7] schematically illustrates an example of display control of the charge status bar according to a particular exemplary embodiment of the present invention.

[0048] [Fig.8] schematically illustrates a device for controlling a system for displaying a charge status bar of an electrical energy storage system of a vehicle, according to a particular and non-limiting exemplary embodiment of the present invention.

[0049] [Fig.9] illustrates a flowchart of the different steps of a method for controlling a system for displaying a charge status bar of an electrical energy storage system of a vehicle, according to a particular exemplary embodiment of the present invention. Description of examples of implementation

[0050] A method and a device for controlling a system for displaying a charge status bar of an electrical energy storage system of a vehicle will now be described in the following with joint reference to FIGS. 1 to 9. The same elements are identified with the same reference signs throughout the description which follows.

[0051] The terms "first(s)", "second(s)" (or "first(s)", "second(s)"), etc. are used in this document by arbitrary convention to enable different elements (such as operations, means, etc.) implemented in the embodiments described below to be identified and distinguished. Such elements may be distinct or correspond to a single element, depending on the embodiment.

[0052] [Fig. 3] schematically illustrates an environment comprising an electric vehicle 10, according to a particular exemplary embodiment of the present invention.

[0053] The electric vehicle 10 corresponds for example to a motor vehicle, for example an electric motor vehicle comprising one or more electric motors.

[0054] The electric vehicle 10 is not limited to a motor vehicle but extends to any type of land vehicle with an electric motor.

[0055] The vehicle 10 has an electrical energy storage system which comprises a traction battery 101. The term “battery” is used to designate a block of battery comprising one or more batteries, each battery comprising one or more electric accumulators.

[0056] The battery 101 corresponds for example to an electric accumulator designed to supply electrical energy to the vehicle 10, in particular to power at least one traction motor of the electric vehicle 10. Such a traction motor corresponds for example to a motor connected to a gearbox, to a transmission shaft or to a wheel of the electric vehicle 10. The battery 101 corresponds for example to a lead or lead-acid battery or even to a nickel-aluminium hydride battery, these batteries being designed to quickly supply a large quantity of current and to be quickly recharged.

[0057] The electrical energy storage system comprises a BMS system (from the English “Battery Management System” or in French “Battery control system”) which is for example associated or coupled to the battery 101. Such a BMS system makes it possible to obtain or measure one or more parameters of the battery at a determined time instant, such as for example: - the voltage: total or of each battery cell; - stored energy: total or of each battery cell; - temperature: average temperature, coolant inlet temperature, coolant outlet temperature, temperature of each battery cell; - the state of charge, known as SOC (from the English “State of Charge”) or depth of discharge, known as DOD (from the English “Depth of Discharge”) indicating the charge level of the battery; - the state of health, known as SOH (from the English “State Of Health”); - the current (intensity in amperes) into the battery or out of the battery; and / or - the internal resistance of the battery: ohmic resistance and ionic resistance.

[0058] The electrical energy storage system also comprises means, for example one or more computers, which determine, during the recharging of the battery 101, VPR and VPM values ​​from information received from the BMS system. Several VPR values ​​can be transmitted during the same recharging. Several VPM values ​​can be transmitted during the same recharging if the conditions change (temperatures, triggering of battery protection function, etc.).

[0059] The vehicle 10 advantageously incorporates a display system comprising a screen 104 ([Fig.4]) which may have a touch interface and a computer 103 configured to control the display of graphic content(s) of a graphic MMI on the screen 104. The computer 103 corresponds for example to the computer of the IVI system of the vehicle 10.

[0060] The screen 104 corresponds for example to a screen of the LCD type (from the English “Liquid Crystal Display” or in French “Display à cristals liquide”), for example of the TFT type (from the English “Thin-Film Transistor” or in French “Transistor en film mince”), or OLED type (from the English “Organic Light-Emitting Diode” or in French “Diode électroluminescente biologique”).

[0061] The screen 104 is configured to display visual content for the driver and passengers of the vehicle. The screen 104 may also be configured to allow the driver and / or passengers of the vehicle 10 to interact with one or more systems embedded in the vehicle via the HMI displayed on the screen 104. For example, the screen 104 is configured to interact with the IVI system.

[0062] According to a particular embodiment, the BMS system (associated with the battery 101) and the display system (screen 104, computer 103, means for determining the actual VPR and VPM values) are connected via a wired network, for example a CAN (Controller Area Network), CAN FD (Controller Area Network Flexible Data-Rate), FlexRay (according to the ISO 17458 standard) or Ethernet (according to the ISO / IEC 802.3 standard) type network. The BMS system can thus transmit information to the display system.

[0063] According to the present invention, the display system is controlled during a recharge of the electrical energy storage system, i.e. of the battery 101, to display a charging status bar of the electrical energy storage system (of the battery 101) of the vehicle 10 on the screen 104. The charging status bar represents a charging power value VPR of the electrical energy storage system VPR and a first maximum charging power limit value VPM1 ([Fig.5]).

[0064] According to the present invention, a process for controlling the charge status bar is implemented by at least one on-board computer of the vehicle 10.

[0065] For example, the process is implemented by the computer 103 or by one or more computers of the electrical energy storage system then in communication with the computer 103 for controlling the display of graphic contents on the screen 104.

[0066] In a first operation of the charge status bar display control process, a second maximum charge power limit value VPM2 is received.

[0067] In a second operation of the charge status bar display control process, if the second maximum charge power limit value VPM2 is greater than the first maximum charge power limit value VPM1 then the charge status bar display system is controlled so that the charge status bar represents the charge power value VPR of the storage system of electrical energy and a replacement maximum charging power limit value VPM3 determined from the second maximum charging power limit value VPM2.

[0068] The user of the vehicle then sees on the screen 104 a charge status bar which indicates a charging power value of the battery 101 which can reach the maximum replacement charging power limit value VPM3 ([Fig.6]).

[0069] In a third operation of the charge status bar display control process, if the second maximum charge power limit value VPM2 is less than the first maximum charge power limit value VPM1 then the charge status bar display system is controlled so that the charge status bar represents the charge power value VPR of the electric energy storage system and the first maximum charge power limit value VPM1 and so that the charge status bar represents the second maximum charge power limit value VPM2.

[0070] The user of the vehicle then sees on the screen 104 a charging status bar which indicates a charging power value of the battery 101 which can reach the second maximum charging power limit value VPM2 but also the first maximum charging power limit value VPM1 ([Fig.7]). The user then realizes that the battery 101 cannot reach the maximum charging power limit value VPML. Of course, if the first maximum charging power limit value VPM1 is replaced by a minimum replacement charging power limit value VPM3 then the user of the vehicle sees on the screen 104 a charging status bar which indicates a charging power value of the battery 101 which can reach the second maximum charging power limit value VPM2 but also the minimum replacement charging power limit value VPM3.

[0071] According to a variant, the first maximum charging power limit value VPM1 is obtained from a memory, for example on board the vehicle 10.

[0072] According to a variant, the first minimum charging power limit value VPM1 is obtained during a first recharge of the electrical energy storage system, i.e. when the charging rate level of the battery 101 is high and in optimal thermal conditions.

[0073] According to a variant, the first maximum charging power limit value is different depending on the type of energy used to recharge the electrical energy storage system.

[0074] According to a variant, the maximum replacement load power limit value VPM3 belongs to a determined set of maximum replacement load power limit values.

[0075] For example, when the electrical energy storage system is recharged from a DC current, the set of maximum replacement charging power limit values ​​VPM3i (i=1 to 2 for example) may include the values ​​of table 1.

[0076] [Tables 1] VPM31 VPM32 values ​​100 kW 170 kW

[0077] For example, when the electrical energy storage system is recharged from an AC current, the set of maximum replacement charging power limit values ​​VPM3i (i=1 to 4 for example) may include the values ​​of table 2.

[0078] [Tables2] VPM33 VPM34 VPM35 VPM36 values ​​3 kW 7 kW 11 kW 22 kW

[0079] According to a variant, the set of replacement maximum load power limit values ​​VPM3i comprises a first replacement maximum load power limit value (VPM31 for example) and a second replacement maximum load power limit value (VPM32 for example) greater than the first replacement maximum load power limit value (VPM31), the determined replacement maximum load power limit value (VPM3) is then equal to the second replacement maximum load power limit value (VPM32) if the second maximum load power limit value (VPM2) is greater than the first replacement maximum load power limit value (VPM31) and less than or equal to the second replacement maximum load power limit value (VPM32).

[0080] According to a variant, the first maximum charging power limit value (VPM1) is equal to the first replacement maximum charging power limit value (VPM31 or VPM33 according to tables 1 or 2 for example).

[0081] The process makes it possible to define, learn and fix a maximum charging power limit value achievable for the entire lifetime of the battery 101 and determined when the battery charge rate level and the thermal conditions are optimal. This maximum charging power limit value is self-learned during recharging of the battery 101.

[0082] A display control of a graphical content representing the charging status bar comprises a rendering of this graphical content, such rendering corresponding to a set of operations carried out by one or more processors on pixels of one or more images to be displayed on the screen 104. For example, the rendering of the graphical content consists of associating with a set of pixels of an image data of pixels (for example, color data expressed in an RGB (Red, Green, Blue) type space). For example, a first set of pixels of a first color may be associated to represent a first area of ​​the screen 104 representing the values ​​of the status bar extending from a zero value up to the charging power value VPR and a second set of pixels of a second color may be associated to represent a second area of ​​the screen 104 representing the values ​​of the status bar extending from the charging power value VPR up to the first charging power limit value VPM1 ([Fig.5]) or the third charging power limit value VPM3 ([Fig.6]).A third set of pixels of a third color may be associated to represent a third area of ​​the screen 104 representing the status bar values ​​extending from the charging power value VPR to the first maximum charging power limit value VPM1 ([Fig.7]) or the third charging power limit value VPM3.

[0083] The display control of the graphic content representing the charge status bar thus comprises the transmission of control signals to the screen 104 to modify the values ​​associated with the pixels of the screen 104 at the location intended to display this graphic content.

[0084] The display control of the graphic content is for example triggered by the connection of a charging terminal to an interface of the vehicle 10, thus connecting this charging terminal with the electrical energy storage system.

[0085] [Fig. 8] schematically illustrates a device 2 for controlling a system for displaying a charge status bar of an electrical energy storage system of a vehicle, according to a particular and non-limiting exemplary embodiment of the present invention. The device 2 corresponds for example to a device on board the vehicle 10, for example one or more computers.

[0086] The device 2 is for example configured for the implementation of the operations described with regard to figures 3 to 7 and / or the steps of the method described with regard to [Fig.9]. Examples of such a device 2 include, but are not limited to, on-board electronic equipment such as an on-board computer of a vehicle, an electronic calculator such as an ECU (“Electronic Control Unit”), a smartphone, a tablet, a laptop. The elements of the device 2, individually or in combination, can be integrated in a single integrated circuit, in several integrated circuits, and / or in discrete components. The device 2 can be produced in the form of electronic circuits or software (or computer) modules or even a combination of electronic circuits and software modules.

[0087] The device 2 comprises one (or more) processor(s) 20 configured to execute instructions for carrying out the steps of the method and / or for executing the instructions of the software(s) embedded in the device 2. The processor 20 may include integrated memory, an input / output interface, and various circuits known to those skilled in the art. The device 2 further comprises at least one memory 21 corresponding for example to a volatile and / or non-volatile memory and / or comprises a memory storage device which may comprise volatile and / or non-volatile memory, such as EEPROM, ROM, PROM, RAM, DRAM, SRAM, flash, magnetic or optical disk.

[0088] The computer code of the embedded software(s) comprising the instructions to be loaded and executed by the processor is for example stored in the memory 21.

[0089] According to a particular and non-limiting exemplary embodiment, the device 2 comprises a communication interface 22 which makes it possible to establish communication with other devices (such as other on-board computers of the vehicle 10) via a communication interface. The communication interface corresponds for example to a transmitter configured to transmit and receive information and / or data via a communication channel 23. The communication channel 23 corresponds for example to a wired network of the CAN (Controller Area Network) type, CAN FD (Controller Area Network Flexible Data-Rate), FlexRay (standardized by the ISO 17458 standard) or Ethernet (standardized by the ISO / IEC 802-3 standard).

[0090] According to a particular and non-limiting exemplary embodiment, the device 3 can provide output signals to one or more external devices, such as a display screen 104, touch-sensitive or not, one or more speakers 25 and / or other peripherals 26 via output interfaces 27, 28, 29 respectively. According to a variant, one or other of the external devices is integrated into the device 2.

[0091] [Fig.9] illustrates a flowchart of the different steps of a method for controlling a system for displaying a charge status bar of the electrical energy storage system of the vehicle 10, according to a particular exemplary embodiment of the present invention.

[0092] The method is for example implemented by a device on board the vehicle 10 or by the device 2 of [Fig.8].

[0093] The display system is controlled during a recharge of the electrical energy storage system, i.e. of the battery 101, to display a charge status bar of the electrical energy storage system (of the battery 101) of the vehicle 10 on the screen 104. The charge status bar represents a charging power value VPR of the electrical energy storage system VPR and a first maximum charging power limit value VPM1.

[0094] In a first step 81, a second maximum load power limit value VPM2 is received.

[0095] In a second step 82, if the second maximum charging power limit value VPM2 is greater than the first maximum charging power limit value VPM1 then the charging status bar display system is controlled so that the charging status bar represents the charging power value VPR of the electrical energy storage system and a replacement maximum charging power limit value VPM3 determined from the second maximum charging power limit value VPM2.

[0096] In a third step 83, if the second maximum charging power limit value VPM2 is less than the first maximum charging power limit value VPM1 then the charging status bar display system is controlled so that the charging status bar represents the charging power value VPR of the electrical energy storage system and the first maximum charging power limit value VPM1 and so that the charging status bar represents the second maximum charging power limit value VPM2.

[0097] According to a variant, the variants and examples of the operations described in relation to figures 3 to 7 apply to the steps of the method of [Fig.8].

[0098] Of course, the present invention is not limited to the exemplary embodiments described above but extends to a method for controlling a system for displaying a charge status bar of an electrical energy storage system of a vehicle which would include secondary steps without thereby departing from the scope of the present invention. The same would apply to a device configured for implementing such a method.

[0099] The present invention also relates to a vehicle, for example an automobile or more generally an autonomous land-based motor vehicle, comprising the device 2 of [Fig.8].

Claims

Claims

1. Method for controlling a system for displaying a charge status bar of an electrical energy storage system of a vehicle during recharging of a battery of the electrical storage system of the vehicle, the charge status bar being displayed on a screen of the display system, the charge status bar representing a charging power value of the electrical energy storage system and a first maximum charging power limit value, said method being implemented by a processor and comprising the following steps: - receiving (81) a second maximum charging power limit value;- if the second maximum charging power limit value is greater than the first maximum charging power limit value then the charging status bar display system is controlled (82) so that the charging status bar represents the charging power value of the electrical energy storage system and a replacement maximum charging power limit value determined from the second maximum charging power limit value; - if the second maximum charging power limit value is less than the first maximum charging power limit value then the charging status bar display system is controlled (83) so that the charging status bar represents the charging power value of the electrical energy storage system and the first maximum charging power limit value and so that the charging status bar represents the second maximum charging power limit value.;

2. The method of claim 1, wherein the first maximum load power limit value is obtained from a memory.

3. A method according to claim 1 or 2, wherein the first maximum charging power limit value is different depending on the type of energy used to recharge the electrical energy storage system.

4. A method according to claim 3, wherein the replacement maximum load power limit value belongs to a determined set of replacement maximum load power limit values.

5. The method of claim 4, wherein the set of replacement maximum load power limit values ​​comprising a first replacement maximum load power limit value and a second replacement maximum load power limit value greater than the first replacement maximum load power limit value, the determined replacement maximum load power limit value is equal to the second replacement maximum load power limit value if the second maximum load power limit value is greater than the first replacement maximum load power limit value and less than or equal to the second replacement maximum load power limit value.

6. The method of claim 5, wherein the first maximum charging power limit value is equal to the first replacement maximum charging power limit value.

7. Device for controlling a system for displaying a charge status bar of an electrical energy storage system of a vehicle, said device comprising a memory associated with at least one processor configured for implementing the steps of the method according to any one of claims 1 to 6.

8. Computer program comprising instructions for implementing the method according to any one of claims 1 to 6, when these instructions are executed by a processor.

9. A computer-readable recording medium on which is recorded a computer program comprising instructions for carrying out the steps of the method according to any one of claims 1 to 6.

10. Vehicle comprising at least one device according to claim 7.

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