METHOD FOR CONTROLLING THE RECHARGE OF A VEHICLE BATTERY

Abstract

Method for controlling a recharge of a battery of a vehicle executing the following steps: - a step (10) of acquiring and transmitting an order (ODR, 10b) to recharge the battery to a target state of charge (SOCC), - a step of recharging (20a, 20b) the battery following this recharge order (ODR), - a step of acquiring and transmitting (10a) an alert instruction (Cal1, Cal2) representative of a state of charge threshold (SOC1, SOC2) strictly lower than the target state of charge (SOCC), and - during the recharge, a step of transmitting an alert signal (30a2, 30b2) when the state of charge threshold (SOC1, SOC2) is crossed. Figure 1.

Description

Title of the invention: METHOD FOR CONTROLLING THE RECHARGE OF A VEHICLE BATTERY

[0001] The invention relates, in general, to the technical field of managing the recharging of traction battery packs by connection to an electrical energy source. These traction battery packs are used in electric or hybrid vehicles, i.e. vehicles powered at least partially by electrical energy.

[0002] In the remainder of the description, reference is made to the use of traction battery packs in electric vehicles, i.e. vehicles powered exclusively by electrical energy. However, these traction battery packs can also be used in so-called hybrid vehicles, i.e. vehicles powered by a conventional thermal engine and an electric motor.

[0003] Motor vehicles having a thermal engine generally include one or more batteries connected to the on-board network, also called service batteries, to power the equipment of these vehicles, in particular a starter of a thermal engine and / or vehicle control computers, with a voltage generally between 11V and 26V. Other vehicles, if they are electrically or hybrid-powered, include one or more traction (or propulsion) batteries connected to a power network to power the electric traction (or propulsion) motors with a voltage generally between 150 and 1000V.

[0004] Battery will therefore be understood throughout the text of this document to mean an assembly comprising at least one battery module containing at least one electrochemical cell, the service battery being considered equivalent to at least one module. This battery possibly comprises electrical or electronic means for managing the electrical energy of this at least one module. When there are several modules, they are grouped in a casing and then form a battery block also commonly called a “battery pack”, this battery block often being designated by the English expression “battery pack”, this casing generally containing a mounting interface, and connection terminals.

[0005] Furthermore, the term electrochemical cell will be understood throughout the text of this document to mean cells generating current by chemical reaction, for example of the lithium-ion (or Li-ion) type, of the Ni-Mh, or Ni-Cd or even lead type.

[0006] In this field it is known to order a recharge of these battery packs remotely from the vehicle, for example via a remote control device such as a smart mobile phone. It is for example known to give a charging order and transmit a target charge status via this mobile phone for unforeseen situations, such as an unexpected journey requiring the battery pack to be recharged earlier than expected or a larger charge than expected. The user of this phone is then alerted, by this same phone, when the target charge status is reached.

[0007] This alert is however late, and is therefore not suitable for an unforeseen situation.

[0008] The aim of the invention is to remedy this problem.

[0009] Thus the subject of the invention relates to a method for controlling a recharge of a battery of a vehicle driven at least partially by the electrical energy of said battery, said method executing the following steps: - a step of acquisition and transmission, from a remote control device of the vehicle and to an on-board control means of the vehicle via a wireless communication network, of an order to recharge the battery to a target charge state, - a battery recharging step following this recharging order, - a step of acquisition and transmission, from the remote control device to the on-board control means, of an alert instruction representative of a state of charge threshold strictly lower than the target state of charge, and - during recharging, a step of transmitting an alert signal from the on-board control means to the remote control device when the state of charge threshold is crossed.

[0010] Thus this method makes it possible to warn the user in advance of the next end of recharging before reaching the target state of charge, this advance being determined by the user himself. In this way, this user can anticipate the preparation of his next departure, for example finalize his luggage or lock his accommodation or turn off all the lights in his accommodation or even shorten a telephone conversation, this list not being exhaustive of course. The invention thus makes it possible to better respond to the situation of an unforeseen journey by allowing the user not to waste time and to reach his vehicle at the very moment when it reaches the target state of charge.

[0011] It is implicit that the vehicle is connected to an energy source for performing the step of recharging the battery. This energy source may be on board the vehicle, for example this energy source is a solar panel system. But more commonly, this energy source will be an energy source external to the vehicle, for example a land-based electrical network via a charging station, or a domestic socket, which is known to those skilled in the art and is not the subject of this invention.

[0012] Note: the concept of state of charge is specified in detail in the description below.

[0013] According to one embodiment of the invention, the recharge order includes the target state of charge.

[0014] For example, the recharging order can define a target charge state of 50%, or 80%, depending on the user's wishes, if the latter considers that this target charge state is sufficient for the unforeseen journey. This target charge state can of course be set at 100% if the unforeseen journey requires it or if the user prefers to prioritize his autonomy over the urgency of the unforeseen journey.

[0015] According to one embodiment of the invention, the recharging order includes a next destination of the vehicle, the method executing a step of determining the target state of charge as a function of the distance remaining to be covered for the vehicle to reach this destination.

[0016] A step of determining the target state of charge as a function of the journey remaining to be covered is perfectly known to those skilled in the art. This determination is for example executed by the on-board control means which holds a driving profile of the driver as well as a geolocation system for example by satellite, but this execution can also be shared between several control devices such as between the on-board control means and the remote control device receiving road traffic or weather information, in particular an ambient temperature. The journey remaining to be covered is for example divided into several sections corresponding to different average vehicle speeds, for example a motorway type section, or a city traffic type section, the difference in altitude of each section can also be taken into account, this list of parameters not being exhaustive.This step is then divided into as many sub-steps as there are sections, the energy spent by the vehicle for each section being determined, then from the sum of these spent energies the target state of charge of the battery is determined, for example based on its state of health or its state of energy.

[0017] In a simplified variant, the next destination of the vehicle is a desired autonomy expressed for example in kilometers or in time, the step of determining the target state of charge being able for example to be simplified by considering a fixed energy consumption of the vehicle per kilometer traveled, this is an approximate but much simpler determination, also known to those skilled in the art.

[0018] According to one embodiment of the invention, the alert instruction is a predetermined percentage of the target state of charge, the method determining the state of charge threshold from this predetermined percentage.

[0019] For example, the user can define the alert if the current state of charge exceeds 80% of the target state of charge, or 90% or any other values ​​that the user would like, excluding 100%: in fact, as previously explained, the alert instruction is representative of a state of charge threshold strictly lower than the target state of charge, this state of charge threshold cannot therefore be equal to the target state of charge, and therefore automatically excludes the value of 100% of the target state of charge.

[0020] According to an alternative embodiment of the invention, the alert instruction is a duration before reaching the target state of charge, the method determining the state of charge threshold from this duration.

[0021] Indeed, and in a manner known to those skilled in the art, the on-board control means is capable of determining a remaining recharge time as a function, for example, of the remaining charge, the current or planned charging speed and in particular the recharge mode (type 1, 2, 3 or 4, which will be detailed in the description below), the battery temperature, the ambient temperature, the type of energy source, this list not being exhaustive. Using an alert instruction in the form of a duration is also much more practical for the user, who can then enter a parameter that is directly perceptible to him: the time he wants between the emission of the alert and the achievement of the target state of charge.

[0022] Of course, it is possible to envisage several alert instructions for the same target charge state, for example at different times.

[0023] The invention also relates to a computer program product comprising code instructions recorded on a medium readable by a remote control device of a vehicle for implementing steps of the method as previously described when said program operates in the remote control device controlling the recharging of the battery of the vehicle driven at least partially by the electrical energy of said battery, these steps being: - the step of acquiring and transmitting via a wireless communication network, the battery recharge order to the target charge state, - the stage of acquisition and transmission of the alert instruction representative of the state of charge threshold strictly lower than the target state of charge, - the step of receiving the alert signal.

[0024] The invention also relates to a computer program product comprising code instructions recorded on a medium readable by an on-board control means of a vehicle for implementing steps of the method as previously described when said program operates in the on-board control means controlling the recharging of the battery of the vehicle driven at least partially by the electrical energy of said battery, these steps being: - the step of receiving via a wireless communication network, the order to recharge the battery to the target state of charge, - the step of receiving the alert instruction representing the state of charge threshold strictly lower than the target state of charge, - the step of recharging the battery following this recharging order, - the step of transmitting the alert signal.

[0025] The invention also relates to a system for controlling the recharging of a battery of a vehicle powered at least partially by the electrical energy of said battery, this system comprising: - the vehicle including the battery, and on-board control means capable of monitoring the charge and state of charge of the battery, - a remote vehicle control device, - a wireless communication network capable of establishing a wireless connection between the on-board control means and the remote control device, the on-board control means and the remote control device comprising the acquisition means, processing by software instructions stored in a memory as well as the control means required for implementing the method as previously described.

[0026] According to one embodiment of the invention, the wireless communication network comprises a computer server comprising the means of acquisition, processing by software instructions stored in a memory as well as the control means required for implementing a step of the method as previously described.

[0027] According to one embodiment of the invention, the remote control device is a mobile telephone.

[0028] This remote control device, and in particular the mobile telephone such as a smart mobile telephone, comprises a human-machine interface making it possible to enter the recharging order, the target charge state, the next destination of the vehicle such as an address or the desired autonomy, or even the alert instruction.

[0029] Other features and advantages will appear on reading the following description of a particular, non-limiting embodiment of the invention, made with reference to the single [Fig.l] in which:

[0030] [Fig.l]: represents a schematic view of a flowchart of the method according to the invention.

[0031] The state of charge, also called SOC (Acronym in English for State of charge), is one of the key parameters in the management of a traction battery pack by an on-board battery control means, also called BMS (Acronym in English for Battery management System). The SOC represents the charge level of the power modules of a battery pack (for convenience, it will mainly be referred to as the battery pack instead of the power module or traction battery pack). The SOC is expressed as a percentage of the maximum charge capacity of the battery pack and this maximum charge is a function of the aging of the battery pack (in other words, its state of health). The SOC is 100% when the battery pack is fully charged, and it is 0% when it is fully discharged. Two other indicators of the charge level are derived from the SOC, the actual SOC and the useful SOC.

[0032] The actual SOC is a manufacturer parameter. It is the actual charge capacity of the new battery pack as indicated by the manufacturer. A 50kWh battery pack will contain 100% of its actual SOC, i.e. 50kWh, and it will contain 0% of its actual SOC, i.e. OkWh.

[0033] The useful SOC, also called customer SOC, represents the quantity of electrical energy contained in the battery pack usable by the user of the electric vehicle in which the battery pack is installed. The maximum useful SOC for a new vehicle is slightly lower than the maximum actual SOC; in general, the maximum useful SOC is 97% of the maximum actual SOC. The use of the battery pack at the useful SOC is intended to preserve the durability of the battery pack when a user fills up with electrical energy at a charging station. Indeed, the vehicle's charging stops at 100% of the useful SOC, i.e. 97% of the actual SOC. In practice, after a complete recharge of a new vehicle, a battery pack with a maximum actual SOC of 50kWh will contain a quantity of electrical energy closer to 48kWh than to 50kWh.

[0034] Nevertheless, if this vehicle, after having undergone a complete recharge (i.e. to 100% of the useful SOC), travels down a road while performing regenerative braking, it will be able to reach 100% of the maximum actual SOC.

[0035] The minimum useful SOC of a new vehicle corresponds to a small fraction of the maximum actual SOC, generally between 1% and 2% of the maximum actual SOC. In practice, a user driving until "running out of power", i.e. down to a useful SOC of 0%, with an electric vehicle whose minimum useful SOC corresponds to 1% of the maximum actual SOC, will still have a minimum amount of energy of 0.5kWh in its battery pack which cannot be used to move its vehicle. Indeed, discharging the battery pack to 0% of the actual SOC, also called deep discharge, would permanently break down the vehicle and it would be impossible to recharge. A replacement of the battery pack would then be essential. In this context, it is understood that the minimum useful SOC is generally strictly greater than the minimum actual SOC. Similarly, it is also understood that the maximum useful SOC is generally strictly less than the maximum actual SOC.

[0036] An index indicating the state of aging of the batteries, or health, also called SOH (Acronym for State of health in English) is also used. The SOH is calculated as follows:

[0037] SOH % Maximum capacity in current aging state [Ah] *100 Maximum capacity when new [Ah]

[0038] As a general rule, a battery pack comprises several power modules. In fact, the electrical energy is stored in the power modules. The BMS (the on-board control means) is also integrated into the battery pack to ensure the control of the power modules. In practice, the BMS consists of a computer controlling the execution of the charging and discharging operations of the battery pack, according to a computer program stored in the BMS. The battery pack also comprises a system for cooling and heating the power modules which is also managed by the BMS. The power modules as well as the other components of the BMS are mechanically held by a frame included in the battery pack and on which a lower cover and an upper cover are fixed.The lower cowling and the upper cowling cooperate with the frame to provide insulation of the battery pack against hazards from the environment in which the vehicle operates.

[0039] As indicated above, the BMS manages the vehicle's traction battery pack and estimates the value of the SOE (Acronym for State of energy in English) designating the charge rate of the battery pack (in kWh or in %). The SOE designates a state of energy of the battery. Throughout the text of this document, the term "state of energy" will be understood to mean the quantity of energy still available for the operation of current-consuming components coupled to the battery or for the operation of the vehicle. This quantity is for example expressed as an absolute value in Watt Hours or in joules, or as a percentage relative to a reference quantity of energy, for example when the state of charge is at 100%.

[0040] This energy state is an input data for determining the remaining autonomy of the battery. This remaining autonomy, depending on the application of the battery, can be expressed in remaining operating time and / or in remaining travelable distance for a motor vehicle for example. This remaining autonomy is also a function of a usage or driving profile for a vehicle, this profile defining a level of power consumed or regenerated (for example a vehicle comprising a braking energy regeneration system), or, if the voltage varies little, equivalently a current consumption profile of the battery as a function of time.This consumption profile, also called usage or driving profile, is for example a projection made from data from the last use of the battery, or a predetermined typical profile, representative of a standard use of the battery, or even of a programmed route of the vehicle, but many other examples are possible. Most often, the BMS determines this energy state from maps resulting from measurements made on a bench or during development. the battery. Some methods propose to calculate this energy state. For example, patent document EP-A1-3245096 discloses a method determining such an energy state.

[0041] The SOE estimated by the BMS is then sent to a second on-board control means, such as a supervisor of a vehicle powertrain, also called eVCU (Acronym for electronic Vehicle control unit in English). The eVCU supervises and coordinates the other computers involved in the operation of the powertrain and as such also intervenes in the control of the traction battery pack. All of these computers are part, according to the meaning of the invention, of the on-board control means.

[0042] The BMS therefore controls, among other operations, the recharge and discharge cycles of the battery pack. As such, the BMS is capable of supporting several recharge modes, including a first domestic recharge mode on a conventional wall socket generally delivering a current of between 8A and 13A under the standard voltage of the domestic electrical network of 220V AC. A second recharge mode controlled by the BMS is the recharge of the battery pack on a wallbox (wall box in French). This wallbox is generally purchased with the vehicle and installed on the meter of the home of the user of the vehicle, that is to say that it is supplied with domestic electrical energy, and it therefore delivers a single-phase current of 16A or 32A or three-phase current of 16A on each phase. The wallbox therefore plays a role comparable to that of an electrical converter. In this case we can speak of a second adjusted recharge mode.The BMS also supports a third charging mode on special terminals generally delivering a direct current of 125A or more at a voltage of 450V. This charging mode on a special terminal is also called fast charging mode and is independent of the domestic electricity network. The BMS also supports a fourth charging mode on special terminals generally delivering a voltage of 800 to 1000V.

[0043] It will be noted that the state of charge SOC within the meaning of the invention is the payload state or client state of charge according to the definition given above, the sign SOC designating the current or instantaneous state of charge considered at any instant.

[0044] Thus [Fig.l] discloses a flowchart of a method for controlling the recharging of a battery (or battery pack) of a vehicle according to an example of the invention, this vehicle being driven at least partially by the electrical energy of said battery or battery pack.

[0045] said method performs the following steps: - a step 10 of acquisition and transmission, from a remote control device of the vehicle and to the on-board control means of the vehicle via a wireless communication network, of an ODR order, 10b for recharging the battery up to a target state of charge SOCC, - a recharging step 20a, 20b of the battery following this ODR recharging order, - a step 10a of acquisition and transmission, from the remote control device and to the on-board control means, of an alert instruction Call, Cal2 representative of a state of charge threshold SOC1, SOC2 strictly lower than the target state of charge SOCC, and - during recharging, a step of transmitting an alert signal 30a2, 30b2 from the on-board control means to the remote control device when the state of charge threshold SOC1, SOC2 is crossed.

[0046] It will be noted that [Fig. 1] further discloses an initial step 00, which is not necessarily executed by the method, but for example by a user. This initial step consists for example in making available an energy source external to the vehicle, for example in connecting the battery pack to the external energy source such as a charging station of a terrestrial electrical network, or in making available an energy source on board the vehicle such as the solar panels previously mentioned. Thus this provision is not part of the subject of this invention and if it is not done, the method continues until it is put on hold at the recharging step 20b.

[0047] A vehicle according to the invention comprises for example: - the battery pack, - an electric motor powered by this battery pack via, for example, an inverter, - a front wheel set, and a rear wheel set, the electric motor being capable of driving the front wheel set via a coupling means. This coupling means is for example an assembly comprising a reduction gear and a friction clutch or a dog clutch, an assembly perfectly known to those skilled in the art. But this is only an example, this motor can alternatively drive the rear wheel set. The wheel set which is not driven by the motor is for example not driven, or coupled to a second electric motor, or coupled to a heat engine or a powertrain assembly comprising a heat engine and the second electric motor, - the on-board control means such as the BMS or the eVCU previously mentioned, - an on-board charger for recharging the battery pack, - a connection socket, connected to the charger or directly to the battery pack depending on the charging method, and suitable for being connected on the other hand to an external energy source such as the terrestrial electricity network, or alternatively or in complement to the solar panels also connected to the on-board charger.

[0048] This vehicle advantageously comprises an on-board network including a service battery, as previously presented, this on-board network being electrically coupled to the battery pack by a direct-direct current converter integrated or not in the on-board charger.

[0049] This vehicle also comprises a wireless communication module, connected by a data network to the on-board control means, and powered by the service battery, and suitable for example for communicating with the external control device directly, for example by a point-to-point WIFI network but which requires a certain proximity between the wireless communication module and the external control device, or by an internet-type network coupled to a wireless mobile telephone network, via for example one or more computer servers. It will be noted that these computer servers can execute determination steps 30b1, 30a1, 20a which will be presented later according to the invention, but it is not essential that these steps can be executed for example by the on-board control means or the remote control device.

[0050] This architecture is of course very well known to those skilled in the art, and will not be detailed further.

[0051] It will be noted that the invention proposes in particular to implement, within the control device and / or the control means and / or the computer server, this method. This implementation can be done by means of a control device or means which can be installed in various computers or servers, or in only a few. Thus, this control device or means can itself be arranged in the form of a dedicated computer comprising a possible dedicated program, for example. Consequently, a DC control device or means, according to the invention, can be produced in the form of software modules (or computer modules (or even "software")), or electronic circuits (or "hardware"), or a combination of electronic circuits and software modules.

[0052] According to this method, the ODR recharge order includes the target state of charge SOCC.

[0053] As previously explained, the reload order ORD can define a state of SOCC target charge of 50%, or 80%, depending on the user's wishes, if the latter considers that this SOCC target charge state is sufficient for the unforeseen journey. This SOCC target charge state can of course be set at 100% if the unforeseen journey requires it or if the user prefers to prioritize his autonomy over the urgency of the unforeseen journey. In the flowchart of [Fig.l], a step 20a of determining this SOCC target charge state is represented. In this example, this determination step 20a is a direct reading of the user's request, that is to say that it is the user who determines the SOCC.

[0054] But as a variant, the ODR recharge order includes a near destination of the vehicle, such as an address or a distance to be covered. For example, the user can request, by this order, a range of 100 km.

[0055] The method then executes the step 20a of determining the target state of charge SOCC as a function of this remaining journey to be covered for the vehicle to reach this destination. As already explained, this determination is known to those skilled in the art, and involves, for example, the concepts previously defined as the state of health SOH or the state of energy SOE of the battery pack.

[0056] This energy state is an input data for determining the remaining autonomy of the battery, whether in distance or in time.

[0057] The on-board control means is predetermined for this determination, whether it is the BMS or the eVCU or both, because they have available all the useful information to determine the target state of charge SOCC. But this determination can be shared between other control means or devices as already previously explained.

[0058] The alert instruction Call, Cal2 is for example a predetermined percentage of the target state of charge SOCC, the method determining the state of charge threshold SOC1, SOC2 from this predetermined percentage.

[0059] In particular, [Fig.l] discloses two alert instructions Call, Cal2 entered by the user by means of the remote control device in step 10a, for example 80% and 95%, and acquired by the on-board control means. The determination of these two state of charge thresholds SOC1, SOC2 is carried out respectively in steps 30bl and 30a 1. In this example, the determination is direct, since the input data is given in % of the SOCC, but if this way of proceeding is simple, it is not necessarily explicit for the user.

[0060] Thus, as a variant, it will be possible to prefer an alert instruction Call, Cal2 as being a duration before reaching the target state of charge SOCC, for example respectively 10 minutes and 5 minutes, the method determining the state of charge threshold SOC1, SOC2 in steps 30bl and 30al from this duration, in the same way as the target state of charge SOCC is determined in step 20a.

[0061] The invention also relates to a computer program product comprising code instructions recorded on a medium readable by a remote control device of a vehicle for implementing steps of the method as previously described, when said program operates in the remote control device controlling the recharging of the battery of the vehicle driven at least partially by the electrical energy of said battery, these steps being: - the step of acquisition and transmission 10 via a wireless communication network, of the ODR recharge order, 10a of the battery up to the target state of charge SOCC, - the acquisition and transmission step 10a of the alert instruction Call, Cal2 re presentation of the state of charge threshold S0C1, SOC2 strictly lower than the target state of charge SOCC, - the step of receiving the alert signal 30b2,30a2.

[0062] Furthermore, the invention also relates to a computer program product comprising code instructions recorded on a medium readable by an on-board control means of a vehicle for implementing steps of the method as previously described when said program operates in the on-board control means controlling the recharging of the battery of the vehicle driven at least partially by the electrical energy of said battery, these steps being: - the reception step 10b via a wireless communication network, of the ODR recharge order of the battery up to the target state of charge SOCC, - the reception step 10a of the alert instruction Call, Cal2 representative of the state of charge threshold SOC1, SOC2 strictly lower than the target state of charge SOCC, - the step of recharging the battery 20b following this ODR recharging order, - the step of transmitting the alert signal 30b2,30a2.

[0063] As explained previously, this distribution of the steps between the on-board control means and the remote control device is only a possible, and preferred, example, due to the fact that each of the on-board control means or remote control device has the information necessary for the execution of these steps, but it is not obligatory. For example, the determination steps 30b 1, 30a 1, 20a can be executed by the computer server of the wireless network, to relieve the on-board control means.

[0064] The invention applies in particular to a system for controlling the recharging of a battery of a vehicle powered at least partially by the electrical energy of said battery, this system comprising: - the vehicle including the battery or battery pack, and the on-board control means capable of monitoring the charge and state of charge of the battery, - the vehicle's remote control device, - the wireless communication network capable of establishing a wireless connection between the on-board control means and the remote control device, the on-board control means and the remote control device comprising the acquisition means, processing means by software instructions stored in a memory as well as the control means required for implementing the method as previously described.

[0065] The wireless communication network comprises the computer server comprising the means of acquisition, processing by software instructions stored in a memory as well as the control means required for implementing a step of the method, for example steps 30b 1, 30a 1, 20a.

[0066] The remote control device is for example a mobile telephone such as a smart mobile telephone, comprising a human-machine interface allowing the ODR recharge order or the Call, Cal2 alert instruction to be entered and transmitted.

[0067] It will be noted that [Fig.l] is represented in the form of GRAFCET: the double horizontal bars signify the operator “AND”, namely that all the branches framed by these double bars are executed in parallel. Step 30b2 is executed when the current state of charge of the battery pack SOC is equal to SOC1, step 30a2 is executed when the current state of charge of the battery pack SOC is equal to SOC2, and the recharging step 20b is executed as long as SOC < SOCC. Step 10 groups together steps 10a and 10b. This GRAFCET is only one illustration among others possible. Indeed, and to illustrate this generality, nothing prevents you from starting to recharge the battery pack when you have not yet received the ODR recharge order or the Call Cal2 alert instructions for example, in particular this process can be applied to a vehicle which was already in the process of being fully recharged before the user decided on this new ODR recharge order.Conversely, the reloading step 20b can be put on hold until the method has determined all the information SOCC, SOC1, SOC2, but here we are entering into more practical than technical considerations. It should be noted, however, that the scope of this invention is not limited to the representation made of it in [Fig.l].

Claims

Claims

1. Method for controlling a recharge of a battery of a vehicle driven at least partially by the electrical energy of said battery, said method executing the following steps: - a step (10) of acquisition and transmission, from a remote control device of the vehicle and to an on-board control means of the vehicle via a wireless communication network, of an order (ODR, 10b) to recharge the battery to a target state of charge (SOCC), - a step of recharging (20a, 20b) the battery following this recharge order (ODR), characterized in that the method further executes: - a step of acquisition and transmission (10a), from the remote control device and to the on-board control means, of an alert instruction (Call, Cal2) representative of a state of charge threshold (SOC1, SOC2) strictly lower than the target state of charge (SOCC), and - during the recharge,a step of transmitting an alert signal (30a2, 30b2) from the on-board control means to the remote control device when the state of charge threshold (SOC1, SOC2) is crossed.,

2. A control method according to claim 1, the recharge order (ODR) including the target state of charge (SOCC).

3. Control method according to claim 1, the recharging order (ODR) including a next destination of the vehicle, the method executing a step of determining the target state of charge (20a) as a function of the distance remaining to be covered for the vehicle to reach this destination.

4. Method according to one of the preceding claims, the alert instruction (Call, Cal2) being a predetermined percentage of the target state of charge (SOCC, the method determining the state of charge threshold (SOC1, SOC2) from this predetermined percentage.

5. Method according to one of claims 1 to 3, the alert instruction (Call, Cal2) being a duration before reaching the target state of charge (SOCC), the method determining the state of charge threshold (SOC1, SOC2) from this duration.

6. Computer program product comprising code instructions recorded on a medium readable by a remote control device of a vehicle for implementing steps of the method according to one of the claims 1 to 5 when said program operates in the remote control device controlling the recharging of the battery of the vehicle driven at least partially by the electrical energy of said battery, these steps being: - the step of acquiring and transmitting (10) via a wireless communication network, the recharge order (ODR, 10a) of the battery to the target state of charge (SOCC), - the step of acquiring and transmitting (10a) the alert instruction (Call, Cal2) representative of the state of charge threshold (SOC1, SOC2) strictly lower than the target state of charge (SOCC), - the step of receiving the alert signal (30b2,30a2).

7. Computer program product comprising code instructions recorded on a medium readable by an on-board control means of a vehicle for implementing steps of the method according to one of claims 1 to 5 when said program operates in the on-board control means controlling the recharging of the battery of the vehicle driven at least partially by the electrical energy of said battery, these steps being: - the step of receiving (10b) via a wireless communication network, the order to recharge (ODR) the battery up to the target state of charge (SOCC), - the step of receiving (10a) the alert instruction (Call, Cal2) representative of the state of charge threshold (SOC1, SOC2) strictly lower than the target state of charge (SOCC), - the battery recharging step (20b) following this recharging order (ODR), - the step of transmitting the alert signal (30b2,30a2).

8. System for controlling the recharging of a battery of a vehicle powered at least partially by the electrical energy of said battery, this system comprising: - the vehicle including the battery, and on-board control means capable of controlling the charge and state of charge of the battery, - a remote control device for the vehicle, - a wireless communication network capable of establishing a wireless connection between the on-board control means and the remote control device, characterized in that the on-board control means and the remote control device comprise the acquisition, processing by software instructions stored in a memory as well as the control means required to implement the method according to any one of claims 1 to 5.

9. Control system according to claim 9, the wireless communication network comprising a computer server comprising the means of acquisition, processing by software instructions stored in a memory as well as the control means required for implementing a step of the method according to any one of claims 1 to 5.

10. A control system according to claim 8 or 9, the remote control device being a mobile phone.

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