METHOD FOR OPERATING CONTROL OF A MOTORIZED DRIVE DEVICE, MOTORIZED DRIVE DEVICE AND DARKNESS DEVICE FOR IT

Description

[0001] The present invention relates to a method for controlling the operation of a motorized drive device.

[0002] Furthermore, the present invention relates to a motorized drive device, in particular for a blackout device, in other words a motorized drive device for a blackout device, configured to implement such a control method, in other words implementing such a control method, as well as a blackout device comprising such a motorized drive device.

[0003] In general, the present invention relates to the field of blackout devices comprising a motorized drive device moving a screen, between at least a first position and at least a second position.

[0004] A motorized drive device includes an electromechanical actuator of a movable closing, obscuring or sun protection element, such as a shutter, a door, a grille, a blind or any other equivalent material, hereafter referred to as a screen.

[0005] A motorized drive system for a blinding device is already known. This drive system comprises an electromechanical actuator, an electronic control unit, and an electrical power supply. The electromechanical actuator includes an electric motor. The electrical power supply includes a battery. The electronic control unit and the electric motor are powered from the battery. The battery provides a voltage.

[0006] It is common practice to monitor the battery charge level, expressed as a percentage of the maximum battery charge, to estimate the remaining runtime of a motorized training device. This battery charge level is usually displayed, allowing the user of the motorized training device to know the estimated remaining runtime. Therefore, when the displayed runtime is low, the user knows that it is necessary to recharge the battery.

[0007] However, this motorized training device has the disadvantage that the battery charge level is not sufficient to accurately estimate the autonomy of the motorized training device.

[0008] Indeed, this autonomy depends on many other parameters, such as for example the age of the battery, the temperature of the battery and / or the discharge rate of the battery, in other words the value of discharge currents of the battery to supply electrical energy to the electromechanical actuator, which are not taken into account to estimate the available autonomy but which have a great influence on the actual autonomy of the motorized drive device.

[0009] Furthermore, taking into account the age of the battery and its temperature would be complex, as the consequences of battery aging or changes in temperature on its capacity are difficult to control.

[0010] With such a motorized drive system, it is possible to display a maximum charge level, even when the battery is at the end of its life and in poor temperature conditions, leading to a very low actual battery life.

[0011] We also know of document FR 2 907 612 A1, which describes a method for controlling the operation of a motorized drive device for a blinding device. The motorized drive device comprises an electromechanical actuator, an electronic control unit, and an electrical power supply. The electromechanical actuator includes an electric motor. The electrical power supply includes a battery. The electronic control unit and the electric motor are powered by the battery. The battery provides a voltage. The available energy in the battery is determined by measuring the voltage delivered by the battery when a movable blind is in a given position, particularly when deployed, which is determined simultaneously during the same step of the method.The determination of the energy available in the battery is implemented following the receipt of a command to move the screen and before the execution of this movement by means of the actuator then a signal is implemented for the user concerning a number of command commands, identical to the one that has just been executed, which can still be executed.

[0012] US patent 7,218,118 B1 also describes a method for controlling the operation of a starter for an internal combustion engine powered by a battery. The method includes a measurement phase, implemented during the starter's operating period. This phase includes a step of measuring the voltage delivered by the battery and a step of recording a minimum voltage value. The method also includes an analysis phase. This analysis phase involves establishing, based on the minimum voltage value recorded during the measurement phase, a representative indicator of the battery's remaining charge. This indicator consists of sending informational messages to the user to check the battery's condition and potentially replace it.

[0013] We are also familiar with the IEEE article by Larry W. Juang et al. ("Implementation of online battery State-of-Power and State-of-Function estimation in electric vehicles applications"), which discloses a method for estimating the operating state of a battery in an electric vehicle by measuring the voltage delivered by the battery. The operating state is a binary parameter indicating whether the battery has sufficient energy to perform a function, such as starting a motor.

[0014] The present invention aims to resolve the aforementioned drawbacks and to propose a method for controlling the operation of a motorized drive device, a motorized drive device configured to implement such a control method, and a blackout device comprising such a motorized drive device, allowing for the accurate estimation of the autonomy of a battery, without necessarily relying on the battery charge level and without having to explicitly know the state of the battery.

[0015] In this regard, the present invention relates, according to a first aspect, to a method for controlling the operation of a motorized drive device, the motorized drive device comprising at least: an electromechanical actuator, an electronic control unit, and an electrical power supply device, the electromechanical actuator comprising at least one electric motor, the electrical power supply device comprising at least one battery, the electronic control unit and the electric motor being supplied with electrical power from the battery, the battery delivering a voltage.

[0016] According to the invention, the method comprises at least: a measurement phase, implemented during a period of operation of the electric motor, during which the method includes at least: a step of measuring in operation the voltage delivered by the battery, and a step of recording in operation a minimum value of the voltage delivered by the battery, and an analysis phase, during which the method includes at least: a step of establishing, on the basis of the minimum value of the voltage recorded during the measurement phase, an indicator representative of the autonomy of the battery, and after the period of operation of the electric motor, if the indicator is equal to a critical indication state, a routine prohibiting the operation of the electric motor, the routine being executed as long as the indicator is equal to the critical indication state.

[0017] Furthermore, the process is implemented when the motorized drive device moves a screen of an occulting device, in a movement of the screen requiring the greatest power delivered by the electromechanical actuator.

[0018] Thus, the indicator representing battery autonomy is established on the basis of the minimum value of the voltage delivered by the battery, during the period of operation of the electric motor.

[0019] In this way, the indicator is based on the actual performance of the battery and the electric motor. This leads to the establishment of a reliable indicator, particularly well-suited for reporting the actual range of the motorized drive system.

[0020] This autonomy can therefore be expressed as a number of operating cycles of the electromechanical actuator, rather than as a percentage of battery charge.

[0021] Therefore, a user of the motorized training device has a reliable and concrete estimate of the battery life, which moreover does not require explicitly determining the state and charge of the battery.

[0022] According to an advantageous feature of the invention, the screen movement requiring the greatest power delivered by the electromechanical actuator is a screen raising movement.

[0023] According to another advantageous feature of the invention, the method further comprises an initialization phase, implemented prior to the operating period of the electric motor, during which the method further comprises: a preliminary measurement step of the voltage delivered by the battery, and a preliminary recording step of a measured voltage value as a reference value.

[0024] The procedure further includes, during the routine prohibiting the operation of the electric motor and as long as the indicator is equal to the critical indication state: a subsequent step of measuring the voltage delivered by the battery, and a subsequent step of comparing a measured voltage value to the reference value.

[0025] If the value of the measured voltage, during the subsequent measurement step, is strictly less than a sum of the reference value of the voltage and a first predetermined correction factor, the process implements, during the routine, the subsequent measurement and subsequent comparison steps again, after a timing step.

[0026] If the measured voltage value in the subsequent measurement step is greater than or equal to the sum of the reference voltage value and the first predetermined correction factor, the procedure further includes, during the routine: a step to modify the indicator, so that the indicator is different from the critical indication state, and a step to end the routine.

[0027] In addition, the first predetermined correction factor is a predetermined voltage value greater than or equal to zero.

[0028] According to another advantageous feature of the invention, the electrical power supply device further comprises a photovoltaic panel, the photovoltaic panel supplying electrical power to the battery.

[0029] Furthermore, the process includes, in addition: During the initialization phase, a preliminary modification step of the reference voltage value by a second correction factor, the second correction factor being a function of the electric current intensity measured at the photovoltaic panel, at the time of the preliminary measurement step of the voltage delivered by the battery during the initialization phase, and during the routine, if the indicator is equal to the critical indication state, a subsequent modification step, executed between the subsequent measurement step and the subsequent comparison step of the routine, of the measured voltage value with a third correction factor, the third correction factor being a function of the electric current intensity measured at the photovoltaic panel, at the time of the subsequent measurement step of the voltage delivered by the battery during the routine.

[0030] According to another advantageous feature of the invention, during the indicator setting step, the indicator is defined as being equal to the critical indication state if the minimum voltage value is strictly less than a predetermined minimum voltage threshold value.

[0031] According to another advantageous feature of the invention, during the measurement phase, the method further comprises: a step of measuring the rotational speed of the electric motor, and a step of recording a maximum value of the rotational speed of the electric motor.

[0032] Furthermore, during the indicator establishment step, the indicator is defined as being equal to the critical indication state, if the minimum value of the recorded voltage is strictly less than a predetermined minimum voltage threshold value and if the maximum value of the recorded rotational speed is strictly less than a predetermined speed threshold value.

[0033] According to another advantageous feature of the invention, the method further comprises, during the analysis phase, a step of displaying the indicator on a display device.

[0034] The present invention relates, according to a second aspect, to a motorized drive device, the motorized drive device comprising at least: an electromechanical actuator, an electronic control unit, and an electrical power supply device, the electromechanical actuator comprising at least one electric motor, the electrical power supply device comprising at least one battery, the electronic control unit and the electric motor being powered electrically from the battery, the battery delivering a voltage.

[0035] According to the invention, the electronic control unit of the motorized drive device is configured to implement the method according to the invention and as mentioned above.

[0036] This motorized drive device has characteristics and advantages similar to those described previously in relation to the control method according to the invention and as mentioned above.

[0037] According to a third aspect, the present invention relates to a concealment device comprising at least: a screen, and a motorized drive device.

[0038] The screen is configured to be driven in motion by the electromechanical actuator of the motorized drive device. According to the invention, the motorized drive device conforms to the invention and as mentioned above.

[0039] This obscuring device has characteristics and advantages similar to those described previously in relation to the motorized drive device according to the invention and as mentioned above.

[0040] According to an advantageous feature of the invention, the shading device further comprises a winding tube. The screen can be rolled up onto the winding tube. Furthermore, the winding tube is arranged to be driven in rotation by the electromechanical actuator.

[0041] Other features and advantages of the invention will become apparent in the following description, made with reference to the attached drawings, given by way of non-limiting examples and in which: [ Fig 1 ] there figure 1 is a schematic cross-sectional view of an installation according to an embodiment of the invention, the installation comprising a blackout device according to the invention; [ Fig 2 ] there figure 2 is a schematic perspective view of the installation illustrated in the figure 1 ; Fig 3 ] there figure 3 is a schematic view in axial and partial cross-section of the installation illustrated in figures 1 And 2 showing an electromechanical actuator of a motorized drive device for the installation's shading device; [ Fig 4 ] there figure 4 is a block diagram of a method for controlling the motorized drive device of the shading device, as illustrated in figures 1 à 3 , in accordance with an embodiment of the invention; and [ Fig 5 ] there figure 5 It includes three block diagrams, each illustrating a way of implementing a step in an algorithm illustrated by the block diagram of the figure 4 .

[0042] First, we describe, with reference to figures 1 And 2 , a home automation system 100 according to the invention. This home automation system 100 includes at least one closing, shading, or solar protection device 3, according to an embodiment of the invention. This home automation system 100, installed in a building, not shown, includes an opening 1, in which is placed a window 40 or a door, which is shown only in the figure 1 This home automation installation 100 is equipped with at least one screen 2 belonging to the closing, shading or solar protection device 3, in particular a motorized roller shutter.

[0043] The closing, shading, or sun protection device 3 is hereinafter referred to as the "shading device". The shading device 3 comprises the screen 2.

[0044] The shading device 3 can be a roller shutter, a fabric blind or a blind with adjustable slats, a rolling gate, a grille, a door, or a hinged shutter. The present invention applies to all types of shading devices.

[0045] We describe, with reference to figures 1 And 2 , a roller shutter conforming to the embodiment of the invention.

[0046] The shading device 3 includes a motorized drive device 5, according to the invention. The motorized drive device 5 includes an electromechanical actuator 11 illustrated in the figure 3 .

[0047] Advantageously, the shading device 3 further comprises a winding tube 4. The screen 2 is windable onto the winding tube 4. In addition, the winding tube 4 is arranged so as to be driven in rotation by the electromechanical actuator 11.

[0048] Thus, the screen 2 of the occultation device 3 is wound on the winding tube 4 or unwound around it, the winding tube 4 being driven by the motorized drive device 5, in particular by the electromechanical actuator 11.

[0049] In this way, screen 2 is mobile between a rolled-up position, particularly high, and an unrolled position, particularly low, and vice versa.

[0050] The screen 2 of the shading device 3 is a closing, shading and / or sun protection screen, rolling and unrolling around the winding tube 4, the inner diameter of which is greater than the outer diameter of the electromechanical actuator 11, so that the electromechanical actuator 11 can be inserted into the winding tube 4, when assembling the shading device 3.

[0051] The electromechanical actuator 11, in particular of tubular type, allows the winding tube 4 to be rotated around an axis of rotation X, so as to move, in particular unwind or wind, the screen 2 of the occulting device 3.

[0052] In an assembled state of the occulting device 3, the electromechanical actuator 11 is inserted into the winding tube 4.

[0053] As is known, the roller shutter, which forms the shading device 3, comprises a curtain with horizontal slats hinged to each other, forming the screen 2 of the roller shutter 3, and guided by two lateral tracks 6, shown only in the figure 2 These slats are joined when the curtain 2 of the roller shutter 3 reaches its fully extended lower position.

[0054] In the case of a roller shutter, the raised position corresponds to the end slat 8, for example L-shaped, of the curtain 2 of the roller shutter 3 pressing against an edge of the roller shutter housing 9, or to the end slat 8 stopping in a programmed upper limit position. Furthermore, the lowered position corresponds to the end slat 8 of the curtain 2 of the roller shutter 3 pressing against a threshold 7 of the opening 1, or to the end slat 8 stopping in a programmed lower limit position.

[0055] Here, the screen 2 is configured to be moved, by means of the motorized drive device 5, between an open position, corresponding to the rolled-up position and which can also be called the first end-of-stroke position or upper end-of-stroke position FdCH, and a closed position, corresponding to the unrolled position and which can also be called the second end-of-stroke position or lower end-of-stroke position FdCB.

[0056] Thus, the electromechanical actuator 11 is configured to drive, or in other words, to move, the screen 2 between the first limit switch position FdCH and the second limit switch position FdCB, and vice versa. We therefore distinguish an upward movement of the screen 2, from position FdCB to position FdCH, and a downward movement of the screen, from position FdCH to position FdCB.

[0057] The first slat of the roller shutter 3, opposite the final end slat 8, is connected to the winding tube 4 by means of at least one joint 10, in particular a band-shaped attachment piece.

[0058] The winding tube 4 is located inside the box 9 of the roller shutter 3. The curtain 2 of the roller shutter 3 winds and unwinds around the winding tube 4 and is housed at least partly inside the box 9.

[0059] Generally, the chest 9 is located above opening 1, or in the upper part of opening 1.

[0060] Advantageously, the motorized drive device 5 is controlled by a control unit. The control unit can be, for example, a local control unit 12 or a central control unit 13.

[0061] Advantageously, the local control unit 12 can be connected, via wired or wireless connection, to the central control unit 13.

[0062] Advantageously, the central control unit 13 can control the local control unit 12, as well as other similar local control units distributed throughout the building.

[0063] The motorized drive device 5 is preferably configured to execute the commands for unwinding or rolling up the screen 2 of the blackout device 3, which may be issued, in particular, by the local control unit 12 or the central control unit 13.

[0064] The home automation installation 100 includes either the local control unit 12, or the central control unit 13, or the local control unit 12 and the central control unit 13.

[0065] We now describe, in more detail and with reference to the figure 3 , the motorized drive device 5, including the electromechanical actuator 11, belonging to the home automation system 100 and, more particularly, to the shading device 3 illustrated in figures 1 And 2 .

[0066] The electromechanical actuator 11 includes an electric motor 16.

[0067] The electric motor 16 is represented by its casing at the figure 3 , without details on its internal constituent elements.

[0068] Advantageously, the electric motor 16 comprises a rotor and a stator, not shown and positioned coaxially around the axis of rotation X, which is also the axis of rotation of the winding tube 4 in the mounted configuration of the motorized drive device 5.

[0069] Here, the electric motor 16 can be of the electronically commutated brushless type, also called "BLDC" (acronym for the Anglo-Saxon term BrushLess Direct Current) or "permanent magnet synchronous", or of the direct current type.

[0070] Control means for the electromechanical actuator 11, enabling the movement of the screen 2 of the occulting device 3, include at least one electronic control unit 15. This electronic control unit 15 is capable of activating the electric motor 16 of the electromechanical actuator 11 and, in particular, enabling the supply of electrical energy to the electric motor 16.

[0071] Thus, the electronic control unit 15 controls, in particular, the electric motor 16, so as to open or close the screen 2, as described previously.

[0072] The control means for the electromechanical actuator 11 include hardware and / or software means.

[0073] As a non-limiting example, the hardware may include at least one microcontroller 31.

[0074] Here, the motorized drive device 5 includes the electronic control unit 15. In addition, the electronic control unit 15 includes the microcontroller 31.

[0075] Advantageously, the electronic control unit 15 further includes a first communication module 27, in particular for receiving control orders, the control orders being issued by an order transmitter, such as the local control unit 12 or the central control unit 13, these orders being intended to control the motorized drive device 5.

[0076] Advantageously, the first communication module 27 of the electronic control unit 15 is wireless. In particular, the first communication module 27 is configured to receive radio control commands.

[0077] Advantageously, the first communication module 27 can also allow the reception of command orders transmitted by wired means.

[0078] Advantageously, the electronic control unit 15, the local control unit 12 and / or the central control unit 13 can be in communication with a weather station, not shown, located inside the building or outside the building, including, in particular, one or more sensors that can be configured to determine, for example, a temperature, a brightness, or a wind speed, in the case where the weather station is located outside the building.

[0079] Advantageously, the electronic control unit 15, the local control unit 12 and / or the central control unit 13 can also communicate with a server 28, as illustrated in the figure 2 , so as to control the electromechanical actuator 11 according to data made available remotely via a communication network, in particular an internet network that can be connected to the server 28.

[0080] The electronic control unit 15 can be operated from the local control unit 12 and / or central control unit 13. The local control unit 12 and / or central control unit 13 is equipped with a control keypad. The control keypad of the local control unit 12 or central control unit 13 includes one or more selection elements 14 and, optionally, one or more display elements 34.

[0081] By way of example, and not as a limitation, selection elements may include push buttons and / or touch-sensitive keys. Display elements may include light-emitting diodes and / or an LCD (Liquid Crystal Display) or TFT (Thin Film Transistor) display. Selection and display elements may also be implemented using a touchscreen.

[0082] Advantageously, the local control unit 12 and / or central control unit 13 includes at least one second communication module 36.

[0083] Thus, the second communication module 36 of the local control unit 12 or central control unit 13 is configured to transmit, in other words, sends out, control orders, in particular by wireless means, for example radioelectric, or by wired means.

[0084] In addition, the second communication module 36 of the local control unit 12 or central control unit 13 can also be configured to receive, in other words receives, control orders, in particular through the same means.

[0085] Advantageously, the second communication module 36 of the local control unit 12 or central control unit 13 is configured to communicate, in other words, communicates, with the first communication module 27 of the electronic control unit 15.

[0086] Thus, the second communication module 36 of the local control unit 12 or central control unit 13 exchanges control orders with the first communication module 27 of the electronic control unit 15, either unidirectionally or bidirectionally.

[0087] Advantageously, the local control unit 12 is a control point, which can be fixed or mobile. A fixed control point can be a control box intended to be fixed to a wall of the building or to the face of a fixed window frame 40 or a door. A mobile control point can be a remote control, a smartphone, or a tablet.

[0088] Advantageously, the local control unit 12 and / or central control unit 13 further includes a controller 35.

[0089] The motorized drive device 5, in particular the electronic control unit 15, is preferably configured to execute movement commands, including closing and opening, of the screen 2 of the shading device 3. These commands can be issued, in particular, by the local control unit 12 or by the central control unit 13.

[0090] The motorized drive device 5 can be controlled by the user, for example by receiving a command order corresponding to a press on the or one of the selection elements 14 of the local control unit 12 or central control unit 13.

[0091] The motorized drive device 5 can also be controlled automatically, for example by receiving a control command corresponding to at least one signal from at least one sensor, not shown, and / or a signal from a clock, not shown, of the electronic control unit 15, in particular the microcontroller 31. The sensor and / or the clock can, alternatively, be integrated into the local control unit 12 or the central control unit 13.

[0092] Advantageously, the electromechanical actuator 11 further comprises a housing 17, in particular a tubular one. The electric motor 16 is mounted inside the housing 17, particularly in an assembled configuration of the electromechanical actuator 11.

[0093] Here, the housing 17 of the electromechanical actuator 11 is cylindrical in shape, specifically of revolution around the axis of rotation X.

[0094] Advantageously, the crankcase 17 is a tube.

[0095] Here, the tube forming the housing 17 has a circular cross-section.

[0096] In one example of an embodiment, the housing 17 is made of a metallic material.

[0097] The material of the electromechanical actuator housing is not limited and can vary. In particular, it can be a plastic material.

[0098] The housing 17 is hollow. The housing 17 comprises a first end 17a and a second end 17b. The second end 17b is opposite the first end 17a. The housing 17 is open at each of its ends 17a, 17b.

[0099] Advantageously, the electromechanical actuator 11 further comprises an output shaft 20.

[0100] The output shaft 20 is disposed, or rather configured to be disposed, at the second end 17b of the housing 17, in particular in the assembled configuration of the electromechanical actuator 11.

[0101] Advantageously, the electromechanical actuator 11 further includes a reducer 19.

[0102] The reducer 19 is represented by its envelope at the figure 3 , without details on its internal constituent elements.

[0103] Advantageously, the reducer 19 includes at least one reduction stage. The reduction stage may be an epicyclic gear train.

[0104] The type and number of reduction stages of the reducer are not limiting.

[0105] The reducer 19 is coupled, in other words is configured to be coupled, with the electric motor 16, in particular with the rotor of the electric motor 16, in the assembled configuration of the electromechanical actuator 11.

[0106] Advantageously, the electromechanical actuator 11 further includes a brake 29.

[0107] By way of non-limiting examples, brake 29 may be a spring brake, a cam brake, a magnetic brake or an electromagnetic brake.

[0108] Here and as can be seen at the figure 3 , in particular in the assembled configuration of the electromechanical actuator 11, the brake 29 is configured to be disposed, in other words is disposed, between the electric motor 16 and the reducer 19, that is to say at the output of the electric motor 16.

[0109] In an alternative, not shown, the brake 29 is configured to be disposed, in other words is disposed, in particular in the assembled configuration of the electromechanical actuator 11, between the electronic control unit 15 and the electric motor 16, in other words at the input of the electric motor 16, between the reducer 19 and the output shaft 20, in other words at the output of the reducer 19, or between two reduction stages of the reducer 19.

[0110] Advantageously, the reducer 19 and, optionally, the brake 29 are arranged inside the housing 17 of the electromechanical actuator 11, particularly in the assembled configuration of the electromechanical actuator 11.

[0111] Advantageously, the electromechanical actuator 11 further includes a ring 30. The ring 30 is disposed, or rather configured to be disposed, at the first end 17a of the housing 17, in particular in the assembled configuration of the electromechanical actuator 11.

[0112] The crown 30 constitutes, in other words is configured to constitute, a rotational guide bearing for the winding tube 4, in particular in an assembled configuration of the occulting device 3.

[0113] Advantageously, the electromechanical actuator 11 and, more particularly, the electronic control unit 15 further includes an obstacle detection and limit switch device, not shown, for winding and unwinding the screen 2, this device being able to be mechanical or electronic.

[0114] Advantageously, the obstacle detection and limit switch device is implemented by means of the microcontroller 31 of the electronic control unit 15 and, in particular, by means of an algorithm implemented by this microcontroller 31.

[0115] The winding tube 4 is driven in rotation around the axis of rotation X and around the housing 17 of the electromechanical actuator 11, supported by two pivot joints. The first pivot joint is formed at one end of the winding tube 4 by means of the ring 30 inserted around the first end 17a of the housing 17 of the electromechanical actuator 11. The ring 30 thus provides a bearing. The second pivot joint, not shown in the figure 3 , is carried out at a second end of the winding tube 4, not visible in this figure.

[0116] Advantageously, the electromechanical actuator 11 further includes a torque support 21, which can also be called an "actuator head" or "fixed point".

[0117] The torque support 21 obture, in other words is configured to obture, the first end 17a of the housing 17, in particular in the assembled configuration of the electromechanical actuator 11.

[0118] Thus, the torque support 21 is disposed, in other words is configured to be disposed, at the level of the first end 17a of the housing 17.

[0119] Advantageously, the torque support 21 is projecting, at the level of the first end 17a of the housing 17, in particular the end 17a of the housing 17 receiving the ring 30.

[0120] Thus, a first part of the torque support 21 is arranged inside the housing 17 and a second part of the torque support 21 is arranged outside the housing 17.

[0121] Advantageously, the torque support 21 of the electromechanical actuator 11 is configured to fix the electromechanical actuator 11 on a frame 23, in particular on a side of the box 9.

[0122] Thus, the torque support 21 allows the forces exerted by the electromechanical actuator 11 to be absorbed, in particular the torque exerted by the electromechanical actuator 11, with respect to the building structure. The torque support 21 also advantageously allows the forces exerted by the winding tube 4 to be absorbed, in particular the weight of the winding tube 4, the electromechanical actuator 11, and the screen 2, and ensures that these forces are transferred to the building structure.

[0123] The torque support 21 is fixed, or rather configured to be fixed, to the housing 17 by means of one or more fixing elements, in particular in the assembled configuration of the electromechanical actuator 11. The fixing element(s) may be, in particular, bosses, fixing screws, elastic snap-fit ​​fixing elements, ribs fitted into notches or a combination of these different fixing elements.

[0124] Furthermore, the torque support 21 of the electromechanical actuator 11 can support at least part of the electronic control unit 15.

[0125] Advantageously, the electronic control unit 15 can be supplied with electrical energy by means of a power supply cable 18.

[0126] Here and as illustrated in the figure 3 , the electronic control unit 15 is thus arranged, in other words is integrated, inside the housing 17 of the electromechanical actuator 11.

[0127] Alternatively, not shown, the electronic control unit 15 is located outside the housing 17 of the electromechanical actuator 11 and, in particular, mounted on the box 9 or in the torque support 21.

[0128] Advantageously, the torque support 21 may include at least one button, not shown.

[0129] This button or these buttons can be used to adjust the electromechanical actuator 11 through one or more configuration modes, to pair one or more control units 12, 13 with the electromechanical actuator 11, to reset one or more parameters, which could be, for example, a limit switch position, to reset the paired control unit(s) 12, 13 or to control the movement of the screen 2.

[0130] Advantageously, the motorized drive device 5 includes at least one display device 38, shown only in the figure 2 , so as to allow a visual indication of an operating parameter of the motorized drive device 5.

[0131] Here, the display device 38 is located on an electronic product, such as the local control unit 12, the central control unit 13, or a home automation box 56, such as, for example, a configuration tool, or a smartphone.

[0132] This display device 38 can be used in addition to or as a replacement for the display element 34.

[0133] Alternatively, not shown, the display device 38 is placed on another element of the home automation installation 100, such as for example on the box 9, on a wall of the building, on one of the side tracks 6, on a pane of glass of the window 40 or on a fixed frame of the window 40.

[0134] According to another variant, not shown, the display device 38 is arranged on the torque support 21.

[0135] Alternatively, the display device 38 includes at least one light source 39, in particular a light-emitting diode.

[0136] This or these light sources 39 can be mounted on an electronic board, not shown, of the electronic control unit 15 and, optionally, a transparent or translucent cover and / or a light guide is or are provided, to allow the passage of the light emitted by the or each of the light sources 39.

[0137] Advantageously, the output shaft 20 of the electromechanical actuator 11 is disposed inside the winding tube 4 and at least partly outside the housing 17 of the electromechanical actuator 11.

[0138] Here, one end of the output shaft 20 protrudes from the housing 17 of the electromechanical actuator 11, in particular from the second end 17b of the housing 17 opposite the first end 17a.

[0139] Advantageously, the output shaft 20 of the electromechanical actuator 11 is configured to drive a connecting element 22 in rotation. This connecting element 22 is connected to the winding tube 4, in particular in the assembled configuration of the occulting device 3. The connecting element is, in the example of the figures, made in the form of a wheel.

[0140] When the electromechanical actuator 11 is switched on, the electric motor 16 and the reducer 19 drive the output shaft 20 in rotation. In addition, the output shaft 20 of the electromechanical actuator 11 drives the winding tube 4 in rotation via the connecting element 22.

[0141] Thus, the winding tube 4 causes the screen 2 of the occulting device 3 to rotate, so as to open or close the opening 1.

[0142] We denote R the rotational speed of the electric motor 16, expressed in revolutions per minute.

[0143] This rotation speed R allows us to define the rotation speed of the output shaft 20 of the electromechanical actuator 11, as well as that of the winding tube 4.

[0144] In practice, the rotational speed of the output shaft 20 of the electromechanical actuator 11, as well as that of the winding tube 4, is obtained by multiplying the rotational speed R of the electric motor 16 with the reduction ratio of the reducer 19.

[0145] Advantageously, the electromechanical actuator 11 further includes a measuring device, not shown, for the rotational speed R.

[0146] Advantageously, the motorized drive device 5 and, more particularly, the electromechanical actuator 11 may include a counting device, not shown, which can be used in particular to determine the rotational speed R of the electric motor 16. The counting device is configured to cooperate with the electronic control unit 15. In addition, the counting device and the electronic control unit 15 are configured to determine a position, which may be called "current", of the screen 2, and, consequently, the rotational speed R of the electric motor 16, as well as that of the output shaft 20 of the electromechanical actuator 11 and that of the winding tube 4.

[0147] Advantageously, the counting device includes at least one sensor, in particular a position sensor, which may be, for example, one, two or three in number.

[0148] In one example embodiment, the counting device is of magnetic type, for example an encoder equipped with one or more Hall effect sensors.

[0149] In one example of an embodiment, the counting device makes it possible to determine the number of revolutions made by the rotor of the electric motor 16.

[0150] Alternatively, not shown, the counting device allows the number of revolutions made by the output shaft 20 of the electromechanical actuator 11 to be determined.

[0151] The type of counting device is not limiting and can vary. This counting device can, in particular, be optical, for example an encoder equipped with one or more optical sensors, or time-based, for example a microcontroller clock 31.

[0152] The obscuring device 3 and, more particularly, the motorized drive device 5 further comprises an electrical power supply device 26, visible at the figure 2 The electromechanical actuator 11 is electrically connected to the electrical power supply device 26.

[0153] The electrical power supply device 26 includes at least one battery 24.

[0154] The 24 battery provides, in other words is configured to provide or deliver, a voltage V bat.

[0155] Let R int be the internal resistance of battery 24.

[0156] Advantageously, the electrical power supply device 26 further includes at least one photovoltaic panel 25.

[0157] The photovoltaic panel 25 provides, in other words is configured to provide or deliver, a voltage V pv.

[0158] The 25 photovoltaic panel provides, in other words is configured to provide or deliver, in addition, an electric current of an intensity I pv.

[0159] Advantageously, the photovoltaic panel 25 can be fixed to the box 9, to a wall of the building, to one of the side channels 6, to a pane of glass in the window 40 or to a fixed frame of the window 40.

[0160] The electrical power supply device 26 is configured to supply, in other words provides, electrical power to the electromechanical actuator 11 and, more particularly, to the electronic control unit 15 and the electric motor 16.

[0161] Thus, the electrical power supply device 26 makes it possible to supply electrical power to the electromechanical actuator 11, without itself being electrically connected to a mains power supply network.

[0162] Here, the photovoltaic panel 25 is electrically connected to the battery 24, by an electrical link.

[0163] The electromechanical actuator 11 is electrically connected to the electrical power supply device 26 and, more particularly, to the battery 24, in particular by means of the electrical power cable 18.

[0164] The battery 24 is configured to supply, in other words provides, electrical energy to the electromechanical actuator 11, in particular the electronic control unit 15 and the electric motor 16.

[0165] Advantageously, battery 24 is configured to be powered, in other words is supplied, with electrical energy by photovoltaic panel 25.

[0166] Thus, the battery 24 is recharged by solar energy, using the photovoltaic panel 25.

[0167] Advantageously, battery 24 can be positioned at the level of the trunk 9 of the blackout device 3.

[0168] Here and as illustrated in the figure 2 Battery 24 is located outside trunk 9.

[0169] Alternatively, not shown, the battery 24 can be disposed inside the box 9, inside the winding tube 4 while being outside the housing 17, or inside the housing 17, particularly in the assembled configuration of the electromechanical actuator 11. In the latter case, the electromechanical actuator 11 includes the battery 24.

[0170] The display device 38 allows for the visualization of at least one indicator representing the battery life 24. This indicator is preferably expressed as the number of screen movement cycles 2 that can be performed by the electromechanical actuator 11; that is, the display device 38 indicates how many screen movement cycles 2 can be performed based on the battery life 24. In other words, this indicator is a functional indicator, rather than a charge indicator. It is denoted "SOF," from the acronym for "State Of Function." The SOF indicator is established during the control process described below.

[0171] The SOF indicator is expressed, for example, in numerical form, by displaying on the display device 38 a number corresponding to the number of screen 2 movement cycles that can be executed by the electromechanical actuator 11, or is expressed by indicating an estimated autonomy range, for example, a remaining autonomy defined by a range of numbers of screen 2 movement cycles that can be executed by the electromechanical actuator 11.

[0172] According to another approach, the SOF indicator is expressed visually, using the light source 39 of the display device 38. For example, the light source 39 is designed to be able to display several colors, such as green, yellow, orange and red, and each color corresponds to an indicator range, in other words to an operating state of the motorized drive device 5.

[0173] As a non-limiting example, the color red can be used for a SOF indicator corresponding to an estimated autonomy of zero, i.e. that the motorized drive device 5 can no longer perform a complete movement of the screen 2, the orange runner can be used for an estimated autonomy between 1 and 5 cycles of movement of the screen 2, the color yellow can be used for an estimated autonomy between 6 and 15 cycles of movement of the screen 2 and the color green can be used for an estimated autonomy greater than 15 cycles of movement of the screen 2. In this example, the SOF indicator can therefore take four states, corresponding to four colors.

[0174] According to another approach, the SOF indicator can take two states, corresponding to two colors emitted by the light source 39 of the display device 38, such as green and red. The color green is, for example, used when the estimated battery life is strictly greater than 1 cycle, and the color red is used when the battery life is less than or equal to 1 cycle.

[0175] Alternatively, the two states correspond to an on state and an off state of the lighting source 39 of the display device 38.

[0176] Alternatively, the SOF indicator can take a different number of states, for example three states or more than four states.

[0177] Here, the electromechanical actuator 11 includes the power cable 18 enabling its supply of electrical energy, in particular the power supply of the electronic control unit 15 and the power supply of the electric motor 16, in particular from the battery 24.

[0178] Here, battery 24 is electrically connected directly to the electronic control unit 15, by the power supply cable 18.

[0179] The 24 battery is rechargeable.

[0180] Advantageously, the battery 24 comprises a plurality of energy storage elements 32, in particular electrically connected in series. The energy storage elements 32 of the battery 24 can be, in particular, cells, in other words, accumulators.

[0181] Advantageously, the photovoltaic panel 25 comprises a plurality of photovoltaic cells 43. In this case, the battery 24 is supplied with electrical energy by means of the photovoltaic cells 43 of the photovoltaic panel 25.

[0182] The motorized drive device 5, in particular the photovoltaic panel 25 and / or the electronic control unit 15, includes charging elements configured to charge the battery 24, from the solar energy recovered by the photovoltaic panel 25. In this case, the current flows between the components 15, 24 and 25 through a wired link, which may be separate from the electrical power supply cable 18.

[0183] Thus, the charging elements configured to charge the battery 24, from solar energy, allow the solar energy recovered by the photovoltaic panel 25 to be converted into electrical energy.

[0184] Alternatively, in addition, the motorized drive device 5, in particular the electromechanical actuator 11, is supplied with electrical energy from the battery 24, from an auxiliary battery, not shown, or from a mains power supply network, in particular from the commercial AC network, in particular depending on a state of charge of the battery 24.

[0185] Here, the electronic control unit 15 comprises a single electronic board 55. Furthermore, the electronic board 55 is configured to control the electric motor 16, to enable the charging of the battery 24, and optionally, to access parameter settings and / or configuration functions of the electromechanical actuator 11, by means of selection and, optionally, display elements, not shown. As mentioned above, the battery charging elements 24 can be arranged on the electronic board 55.

[0186] Alternatively, and not shown, the electronic control unit 15 comprises a first electronic board and a second electronic board. The first electronic board is configured to control the electric motor 16. Furthermore, the second electronic board is configured to allow charging of the battery 24 and, optionally, access to parameter settings and / or configuration functions of the electromechanical actuator 11, by means of selection and, optionally, display elements, which are not shown. The battery charging elements for the battery 24 may be located on the second electronic board.

[0187] In the case where the electronic control unit 15 comprises a first electronic board and a second electronic board, not shown, the first electronic board of the electronic control unit 15 may be arranged inside the housing 17 of the electromechanical actuator 11. Furthermore, the second electronic board may be arranged inside the torque support 21 of the electromechanical actuator 11. Moreover, the torque support 21 may include a cover, not shown. In addition, the second electronic board may be arranged inside a recess formed between a portion of the torque support 21 and the cover.

[0188] The electronic control unit 15 further includes at least one measuring device 33.

[0189] The measuring device 33 is configured to measure, or in other words, to measure, the voltage Vbat supplied or delivered by the battery 24, as illustrated in the figure 3 .

[0190] The measuring device 33 is electrically connected to the battery 24.

[0191] The microcontroller 31 includes at least one first input port, not shown, for reading the voltage Vbat supplied by the battery 24 and measured by the measuring device 33. In other words, the first input port of the microcontroller 31 is configured to read the voltage Vbat supplied by the battery 24 and measured by the measuring device 33.

[0192] Advantageously, the first input port of the microcontroller 31 includes a first analog-to-digital converter, not shown. In this case, the first analog-to-digital converter is integrated into the microcontroller 31.

[0193] Alternatively, but not shown, the first input port of the microcontroller 31 is electrically connected to a first analog-to-digital converter. In this case, the first analog-to-digital converter is a separate component from the microcontroller 31.

[0194] Advantageously, the measuring device 33 includes at least one first voltage divider bridge, not shown.

[0195] Here, the first voltage divider bridge consists of a first resistor and a second resistor. The first resistor is electrically connected to the second resistor. The first voltage divider bridge includes a first midpoint. The first midpoint is located between the first resistor and the second resistor.

[0196] Thus, the first and second resistors of the first voltage divider bridge allow us to measure, in other words to determine, a value of the voltage Vbat supplied by the battery 24.

[0197] Advantageously, the measuring device 33 is also configured to measure, in other words, measure, the intensity I pv of the electric current supplied or delivered by the photovoltaic panel 25.

[0198] The measuring device 33 is electrically connected to the photovoltaic panel 25.

[0199] The microcontroller 31 includes at least one second input port, not shown, for reading the intensity I pv of the electric current delivered by the photovoltaic panel 25 and measured by the measuring device 33. In other words, the second input port of the microcontroller 31 is configured to read the intensity I pv of the electric current delivered by the photovoltaic panel 25 and measured by the measuring device 33.

[0200] Advantageously, the second input port of microcontroller 31 includes a second analog-to-digital converter, not shown. In this case, the second analog-to-digital converter is integrated into microcontroller 31.

[0201] Alternatively, but not shown, the second input port of microcontroller 31 is electrically connected to a second analog-to-digital converter. In this case, the second analog-to-digital converter is a separate component from microcontroller 31.

[0202] Advantageously, the measuring device 33 includes at least one shunt resistor, not shown, and, possibly, an amplifier, not shown.

[0203] Thus, the shunt resistance allows us to measure, in other words to determine, a value of the intensity I pv of the electric current delivered by the photovoltaic panel 25.

[0204] Advantageously, the measuring device 33 is also configured to measure, in other words, measure, the voltage Vpv supplied or delivered by the photovoltaic panel 25.

[0205] The measuring device 33 is electrically connected to the photovoltaic panel 25.

[0206] The microcontroller 31 includes at least a third input port, not shown, for reading the voltage Vpv supplied by the photovoltaic panel 25 and measured by the measuring device 33. In other words, the third input port of the microcontroller 31 is configured to read the voltage Vpv supplied by the photovoltaic panel 25 and measured by the measuring device 33.

[0207] Advantageously, the third input port of the microcontroller 31 includes a third analog-to-digital converter, not shown. In this case, the third analog-to-digital converter is integrated into the microcontroller 31.

[0208] Alternatively, but not shown, the third input port of the microcontroller 31 is electrically connected to a third analog-to-digital converter. In this case, the third analog-to-digital converter is a separate component from the microcontroller 31.

[0209] Advantageously, the measuring device 33 includes at least one second voltage divider bridge, not shown.

[0210] Here, the second voltage divider bridge includes a third resistor and a fourth resistor. The third resistor is electrically connected to the fourth resistor. The second voltage divider bridge includes a second midpoint. The second midpoint is located between the third and fourth resistors.

[0211] Thus, the third and fourth resistors of the second voltage divider bridge allow us to measure, in other words to determine, a value of the voltage Vpv supplied by the photovoltaic panel 25.

[0212] Advantageously, the electrical power supply device 26, and more particularly the electronic control unit 15, further includes a diode, not shown. The diode is electrically connected, on the one hand, to the photovoltaic panel 25 and, on the other hand, to the battery 24.

[0213] Advantageously, the diode is an integral part of the electrical connection between the photovoltaic panel 25 and the battery 24.

[0214] Here, the diode is positioned between the photovoltaic panel 25 and the battery 24. The diode is said to be "passive" from the photovoltaic panel 25 to the battery 24 and said to be "blocking" from the battery 24 to the photovoltaic panel 25.

[0215] Here, the diode makes it possible, in particular, to avoid a return of electrical energy from the battery 24 to the photovoltaic panel 25, when the value of the voltage V pv supplied by the photovoltaic panel 25 is strictly less than a value of the voltage V bat supplied by the battery 24.

[0216] In addition, the diode helps to protect the electrical power supply device 26 against a reversal of the wiring direction of the battery 24 or the photovoltaic panel 25.

[0217] We now describe, with reference to figures 4 And 5 , a method of implementing a control procedure during operation of the motorized drive device 5, illustrated in figures 1 à 3 , in accordance with the invention.

[0218] The method aims to establish the SOF indicator representative of the battery autonomy 24, expressed, for example, as a number of screen movement cycles 2 that can be executed by the electromechanical actuator 11.

[0219] The process is executed automatically by the electronic control unit 15, in particular when the electronic control unit 15 receives a command order from the local control unit 12 or central control unit 13, or from a sensor and / or a clock.

[0220] The process is executed when the received command order is a command order aimed at causing a movement of the screen 2 in the movement requiring the greatest power delivered by the electromechanical actuator 11, between the upward movement of the screen 2 and the downward movement of the screen 2.

[0221] In the example, the process is executed when the received command is an order to move the screen 2 upwards, because this movement requires, in the example, a power delivered by the electromechanical actuator 11 greater than the downward movement of the screen 2, the latter being aided by the self-weight of the screen 2.

[0222] Advantageously, the process includes an initialization phase P1, implemented before a period of operation of the electric motor 16 and, preferably, after the electronic control unit 15 receives a command order, in particular from the first communication module 27.

[0223] Advantageously, the process includes, during the initialization phase P1, a start-up step 200, which corresponds to the start of the initialization phase P1, triggered when the electronic control unit 15 receives the command order, in particular from the first communication module 27.

[0224] The process further includes, during the initialization phase P1, a first measurement step 210, called "preliminary measurement", in this case subsequent to the start-up step 200, which consists of measuring the voltage Vbat delivered by the battery 24, in particular by means of the measuring device 33. This measurement is called "no-load", because it is carried out when the battery 24 does not supply electrical energy to the electric motor 16.

[0225] Advantageously, the process further includes, during the initialization phase P1, a first recording step 220, called "pre-recording", during which a value of the voltage Vbat measured, during the first measurement step 210, is recorded as a reference value, denoted Vref, of the voltage Vbat.

[0226] Advantageously, the process further includes, during the initialization phase P1, a first end step 230, which consists of allowing the movement of the screen 2 by the electromechanical actuator 11.

[0227] The process further includes a measurement phase P2, implemented simultaneously with the movement of the screen 2, i.e. during the operating period of the electric motor 16, and, in particular, after the first end step 230 of the initialization phase P1.

[0228] The process further includes, during the measurement phase P2, a second measurement step 300, called "initial operating measurement", which consists of measuring the voltage Vbat delivered by the battery 24, in particular by means of the measuring device 33. This measurement is called "under load", because it is carried out when the battery 24 supplies electrical energy to the electric motor 16.

[0229] The process further includes, during the measurement phase P2, a second recording step 310, called "initial operating recording", implemented following the second measurement step 300, which consists of recording a value of the voltage Vbat measured, during the second measurement step 300, as a minimum value, noted Vmin, of the voltage Vbat.

[0230] Advantageously, during the measurement phase P2, the process then includes a loop implemented continuously throughout the operating period of the electric motor 16, which includes the following steps, executed in the order mentioned: a first timing step 320, called the "operating timing step", which consists of implementing a pause in the execution of the process, the duration of this pause being equal to a predetermined time period T1, which may be, for example, equal to one hundred milliseconds, a third measurement step 330, called the "iterative operating measurement step", which consists of measuring the voltage Vbat delivered by the battery 24, in particular by means of the measuring device 33, a first comparison step 340, called the "operating comparison step", which consists of comparing a value of the measured voltage Vbat with the minimum value Vmin of the voltage Vbat recorded previously, during the second recording step 310, a third recording step 350, called the "iterative operating recording step", executed only if the result of the first comparison step 340 is that the value of the measured voltage Vbat,During the third measurement step 330, the value is strictly less than the minimum value Vmin of the voltage Vbat, which consists of making the minimum value Vmin of the voltage Vbat equal to the value of the voltage Vbat measured during the third measurement step 330, and a verification step 360, which consists of verifying whether the electric motor 16 is in operation or whether the movement of the screen 2 by means of the electromechanical actuator 11 is complete.

[0231] At the end of the verification step 360, if the determined result is that the electric motor 16 is still running, i.e. if the movement of the screen 2 by means of the electromechanical actuator 11 is not completed, then the steps noted from 320 to 360 are executed again and the process resumes at the first timing step 320.

[0232] Otherwise, at the end of the verification step 360, if the determined result is that the electric motor 16 is no longer in operation, i.e. if the movement of the screen 2 by means of the electromechanical actuator 11 is completed, then the measurement phase P2 is completed and the process executes an analysis phase P3.

[0233] It is understood that the measurement phase P2 allows the minimum value V min of the voltage V bat delivered by the battery 24 to be recorded, in particular to the electric motor 16, during the operating period of the electric motor 16. In practice, this minimum value V min of the voltage V bat is measured at the instant when the electrical power delivered by the electromechanical actuator 11 to move the screen 2 is maximum, that is to say when the resistance to the movement of the screen 2 is maximum.

[0234] The second and third measurement steps 300, 330 together form measurement steps known as "in operation measurement".

[0235] The second and third recording steps 310, 350 together form recording steps known as "recording in operation".

[0236] The order of steps noted 300 to 360 of the measurement phase P2 is given here as an example and variations of this order are conceivable without having an impact on the objective of the measurement phase P2, which is to record the minimum value V min of the voltage V bat delivered by the battery 24 during the operating period of the electric motor 16.

[0237] For example, the first timing step 320 can be carried out just before the verification step 360, i.e. at the end of the loop of the measurement phase P2.

[0238] In another example, the second recording step 310 can be performed during the initialization phase P1, and the minimum value Vmin of the voltage Vbat is then arbitrarily defined as equal to a predetermined threshold value, referred to as "high," so that the measurement of the voltage Vbat implemented in the third measurement step 330 necessarily indicates a value of the voltage Vbat strictly lower than the minimum value Vmin of the voltage Vbat. In this example, the second measurement step 300 is no longer necessary, and the measurement phase P2 begins from the third measurement step 330.

[0239] The process further includes, during the analysis phase P3, an establishment step 400, which consists of establishing the SOF indicator, based on the minimum value V min of the voltage V bat recorded, in other words determined, during the measurement phase P2.

[0240] This 400 establishment step can be implemented in several ways.

[0241] In a first implementation of the establishment step 400, referenced 410 in the figure 5 , the process further includes, during the analysis phase P3, a second comparison step 412, called "voltage comparison", of the minimum value V min of the voltage V bat to a predetermined threshold voltage value V, called "minimum", which can be, for example, equal to 8.6V.

[0242] The process further includes, during the analysis phase P3, if the minimum value V min of the voltage V bat is strictly less than the predetermined voltage threshold value V, a first assignment step 414, where the indicator SOF is assigned as being equal to a critical indication state, denoted SC.

[0243] Otherwise, the process further includes, during the analysis phase P3, if the minimum value V min of the voltage V bat is greater than or equal to the predetermined voltage threshold value V, a second assignment step 416, where the SOF indicator is assigned as being different from the critical indication state SC.

[0244] It is then understood that, in the first embodiment, the SOF indicator can take two distinct states.

[0245] In this first embodiment, the light source 39 of the display device 38 is configured to display two colors, which can be, for example, green and red.

[0246] In practice, the predetermined voltage threshold value V is established based on specific characteristics of the shading device 3 and, more particularly, based on the performance of the electromechanical actuator 11, including its maximum power and efficiency, characteristics of the screen 2, including its mass and dimensions, and / or characteristics of the home automation system 100, including the coefficient of friction between the screen 2 and the side guides 6.

[0247] Thus, for each shading device 3, a specific predetermined voltage threshold value V is defined.

[0248] The predetermined voltage threshold value V can also take into account a maximum torque delivered by the electromechanical actuator 11, during the movement of the screen 2.

[0249] Advantageously, the critical indication state SC is defined as a value of the voltage Vbat below which the battery 24 no longer has sufficient capacity to perform a movement of the screen 2, in particular a full rise movement of the screen 2.

[0250] In other words, the critical indication state SC is defined as the threshold below which the battery life 24 is zero.

[0251] Thus, the SOF indicator is considered to be equal to the critical indication state SC when the electromechanical actuator 11 is no longer able to move the screen 2, in particular a full upward movement of the screen 2.

[0252] The SOF indicator defined from the value V min of the voltage V bat and compared to the critical indication state SC is particularly advantageous, because the value V min of the voltage V bat reflects the actual capabilities of the battery 24 to supply electrical energy to the electric motor 16, without explicitly determining the charge level of the battery 24 and its aging.

[0253] Thus, the SOF indicator is not affected by the battery status 24, making it particularly reliable and accurate.

[0254] The method further includes, during the analysis phase P3, if the SOF indicator is equal to the critical indication state SC, a routine 500, implemented after the operating period of the electric motor 16, in particular after the establishment step 400. The purpose of the routine 500 is to prohibit the operation of the electric motor 16, in other words any movement of the screen 2, as long as the SOF indicator is equal to the critical indication state SC, and to only allow the operation of the electric motor 16, in other words a movement of the screen 2, once the SOF indicator is different from the critical indication state SC, that is to say once the autonomy of the battery 24 is sufficient, or again sufficient, to allow a movement of the screen 2, in particular a complete upward movement of the screen 2.

[0255] The process also includes, during routine 500, the following steps: An analysis step 510 involves analyzing the SOF indicator by checking whether the SOF indicator is equal to or different from the critical indication state SC. If the result of analysis step 510 is that the SOF indicator is different from the critical indication state SC, then the process terminates routine 500 and implements a second termination step 560, described below. If the result of analysis step 510 is that the SOF indicator is equal to the critical indication state SC, then the process continues routine 500, specifically with a fourth measurement step 520, referred to as the "subsequent measurement" step. The fourth measurement step 520 consists of measuring the voltage Vbat delivered by the battery 24, specifically using the measuring device 33. This measurement is referred to as the "no-load" measurement because it is performed when the battery 24 is not supplying electrical power to the electric motor 16.A third comparison step 530, called the "subsequent comparison" step, consists of comparing a value of the voltage Vbat measured during the fourth measurement step 520 with a sum of the reference value Vref of the voltage Vbat and a first predetermined correction factor ΔV, described below. If the result of the third comparison step 530 is that the value of the voltage Vbat measured during the fourth measurement step 520 is greater than or equal to the sum of the reference value Vref of the voltage Vbat and the first predetermined correction factor ΔV, then the method implements a first modification step 550.Otherwise, if the result of the third comparison step 530 is that the value of the voltage Vbat measured during the fourth measurement step 520 is strictly less than the sum of the reference value Vref of the voltage Vbat and the first predetermined correction factor ΔV, then the process implements a second timing step 540, called the "subsequent timing step." This second timing step 540 consists of implementing a pause in the execution of the process, the duration of which is equal to a predetermined time period T2, which could be, for example, equal to one minute. Following the second timing step 540, the fourth measurement step 520 and the third comparison step 530 are executed again.Thus, steps 520 to 540 form a loop that the process repeats until the voltage Vbat is greater than or equal to the sum of the reference value Vref of the voltage Vbat and the first predetermined correction factor ΔV, where the process implements the first modification step 550. The first modification step 550 of the SOF indicator consists of modifying the SOF indicator so as to make it different from the critical indication state SC. Following the first modification step 550, the process implements the second end step 560 of routine 500.

[0256] The first predetermined correction factor ΔV used in the third comparison step 530 is in practice a safety factor, which is a predetermined voltage value, in particular constant, for the motorized drive device 5, and which is positive or zero.

[0257] In an example where the first predetermined correction factor ΔV is equal to 0V, the second timing step 540 consists of checking whether the value of the voltage V bat measured, during the fourth measurement step 520, is greater than or equal to the reference value V ref of the voltage V bat.

[0258] According to another example, the first predetermined correction factor ΔV is equal to one hundred millivolts.

[0259] The second step at the end of 560 corresponds to the end of the analysis phase P3 and the end of the process.

[0260] At the end of the process, the motorized drive device 5 is able to move the screen 2 again, and therefore to execute the phases noted P1 to P3 again.

[0261] Otherwise, as long as the analysis phase P3 is not completed, then the electronic control unit 15 prohibits the operation of the electric motor 16, and therefore the movement of the screen 2 by means of the electromechanical actuator 11, even if a command order aimed at causing a movement of the screen 2 is received by the electronic control unit 15, in particular by the first communication module 27.

[0262] In other words, thanks to routine 500, the electric motor 16 cannot be activated as long as the SOF indicator is at the critical indication state SC. This prevents the screen 2 from moving when the battery 24's charge is insufficient to move the screen 2 using the electromechanical actuator 11, and also prevents deep discharge of the battery 24, which would be detrimental to its performance and lifespan.

[0263] It is understood that, once the SOF indicator is determined to be equal to the critical indication state SC in analysis step 510, the battery 24 needs to be recharged, as its remaining charge is insufficient to allow movement of the screen 2 by means of the electromechanical actuator 11. This recharging is carried out, for example, using the photovoltaic panel 25, an auxiliary battery, or a charger. Routine 500 then monitors the progress of the battery 24's recharging and only allows further movement of the screen 2 by means of the electromechanical actuator 11 once the battery 24 has been sufficiently recharged to guarantee enough charge to allow movement of the screen 2.

[0264] It is therefore particularly advantageous that the voltage Vbat delivered by the battery 24 be compared to the reference value Vref of the voltage Vbat, since the reference value Vref of the voltage Vbat was measured during the initialization phase P1, i.e. before the movement of the screen 2 by means of the electromechanical actuator 11 carried out during the analysis phase P2.

[0265] In other words, it has been determined by the Applicant that when the so-called "open circuit" voltage Vbat of the battery 24 is at least equal to the reference value Vref of the voltage Vbat, then the battery 24 has sufficient autonomy to allow at least one movement of the screen 2 by means of the electromechanical actuator 11.

[0266] Furthermore, when the first predetermined correction factor ΔV is strictly greater than 0V, then a new movement of the screen 2 by means of the electromechanical actuator 11 is only permitted when the autonomy of the battery 24 is greater than it was before the movement of the screen 2 which caused it to switch into the critical indication state SC, represented by the indicator SOF.

[0267] The first predetermined correction factor ΔV thus prevents the SOF indicator from oscillating between the critical indication state SC and one of the other indication states or the other indication state.

[0268] Advantageously, the process further includes, during the analysis phase P3, a first display step 480, called "pre-display", implemented after the establishment step 400 and before the routine 500, which consists of displaying the SOF indicator on the display device 38.

[0269] In the example, the first display stage 480 causes the light source 39 of the display device 38 to display a green color if the SOF indicator is different from the critical indication state SC and, otherwise, to display a red color if the SOF indicator is equal to the critical indication state SC.

[0270] Advantageously, the process further includes, during routine 500 of analysis phase P3, a second display step 580, called "subsequent display", implemented after the first modification step 550 of routine 500 and before the second end step 560, which consists of displaying the SOF indicator on the display device 38.

[0271] The second display step 580 allows the display device 38 to be updated, in particular if the SOF indicator equal to the critical indication state SC is established during the establishment step 400.

[0272] Thus, a user of the motorized drive device 5 is informed by the second display stage 580 of the switching of the SOF indicator out of the critical indication state SC and therefore of the moment when a movement of the screen 2 by means of the electromechanical actuator 11 is again authorized by the electronic control unit 15.

[0273] In practice, if during the analysis step 510 the process has determined that the SOF indicator is different from the critical indication state SC, then the second display step 580 does not modify the display of the display device 38. In this case, the second display step 580 is therefore optional.

[0274] In practice, when the battery 24 is supplied with electrical energy by the photovoltaic panel 25, then the so-called "open circuit" voltage Vbatt measured by the measuring device 33 during the first and fourth measurement steps 210, 520 is affected by the electrical current delivered by the photovoltaic panel 25.

[0275] To take into account the photovoltaic panel 25, the process further includes two additional modification steps, implemented after the first measurement step 210 of the initialization phase P1 and after the fourth measurement step 520 of the analysis phase P3, noted respectively 240 and 570.

[0276] During the second modification step 240, called "pre-modification", the reference value V ref of the voltage V bat, recorded during the first recording step 220, and corresponding to the value of the voltage V bat measured during the first measurement step 210 of the initialization phase P1, is modified with a second correction factor ΔC1, in particular is decreased by the second correction factor ΔC1.

[0277] Similarly, during the third modification step 570, called "subsequent modification", the value of the voltage Vbat measured during the fourth measurement step 520 of the analysis phase P3, is modified with a third correction factor ΔC2, in particular is decreased by the third correction factor ΔC2.

[0278] Advantageously, the second correction factor ΔC1 is a function of the intensity I pv of the electric current measured at the photovoltaic panel 25, at the time of the first measurement step 210 of the voltage V bat delivered by the battery 24 during the initialization phase P1.

[0279] In practice, the second correction factor ΔC1 is equal to the product of an internal resistance R int of the battery 24 with the intensity I pv of the electric current delivered by the photovoltaic panel 25 and measured by the measuring device 33. The measurement of the intensity I pv of the electric current delivered by the photovoltaic panel 25 is implemented during the initialization phase P1, simultaneously with the first measurement step 210 to measure the voltage V bat of the battery 24.

[0280] The internal resistance Rint of battery 24 tends to increase during the movement of screen 2, which is operated by electromechanical actuator 11, particularly during the upward movement of screen 2. The minimum value Vmin of the voltage Vbat can be reached after a few seconds, once the peak power supplied by electromechanical actuator 11 has passed. This is because the maximum voltage drop, which leads to the minimum value Vmin of the voltage Vbat, is the product of the internal resistance Rint of battery 24 and the current Ipv delivered by the photovoltaic panel 25.

[0281] Advantageously, the third correction factor ΔC2 is a function of the intensity I pv of the electric current measured at the photovoltaic panel 25, at the time of the fourth measurement step 520 of the voltage V bat delivered by the battery 24 during the routine 500.

[0282] In practice, the third correction factor ΔC2 is equal to the product of the internal resistance R int of the battery 24 with the intensity I pv of the electric current delivered by the photovoltaic panel 25 and measured by the measuring device 33. The measurement of the intensity I pv of the electric current delivered by the photovoltaic panel 25 is implemented during routine 500 of the analysis phase P3, simultaneously with the fourth measurement step 520 to measure the voltage V bat of the battery 24.

[0283] In practice, since the internal resistance R int of the battery 24 is variable, this internal resistance R int is either measured during additional steps of the process implemented before the second and third modification steps 240, 570, not described here in detail, or approximated by a constant value, preferably representative of a worst-case scenario, i.e., a maximum internal resistance R int.

[0284] The second and third modification steps 240 and 570 thus allow for consideration of the impact of the photovoltaic panel 25 on the measurement of the so-called "open-circuit" voltage Vbat. This is particularly advantageous for obtaining a reliable estimate of the battery's autonomy 24.

[0285] Alternatively, and not shown, the motorized drive device 5, in particular the electronic control unit 15, includes one or more elements, also not shown, configured to electrically isolate the battery 24 from the photovoltaic panel 25 during the voltage measurement steps Vbat. These elements could be, for example, a switch or a transistor. In this case, the voltage measurement Vbat is actually performed under no-load conditions. In such an alternative, the second and third modification steps 240 and 570 are not implemented, as the photovoltaic panel 25 has no impact on the voltage measurement Vbat.

[0286] We now describe a second embodiment of the establishment step 400, referenced as 430 in the figure 5 .

[0287] In this second implementation of the 400 establishment step, the SOF indicator is designed to be able to take four distinct states: a first state, in which the SOF indicator is equal to the critical indication state SC, a second state, in which the SOF indicator is equal to a first reference indication state S1, a third state, in which the SOF indicator is equal to a second reference indication state S2, and a fourth state, in which the SOF indicator is equal to a third reference indication state S3.

[0288] Advantageously, in the second embodiment of the establishment step 400, the light source 39 of the display device 38 is configured to display four colors.

[0289] For example, the critical indication state SC is associated with the color red, the first reference indication state S1 is associated with the color orange, the second reference indication state S2 is associated with the color yellow, and the third reference indication state S3 is associated with the color green.

[0290] In the second embodiment of the establishment step 400, the method further comprises, during the analysis phase P3, three comparison steps 432, 436, 440 of the minimum value V min of the voltage V bat to three distinct predetermined voltage threshold values ​​V1, V2, V3, which may be, for example, respectively equal to 8.6V, 9V and 9.5V.

[0291] During the fourth comparison step 432, the minimum value V min of the voltage V bat is compared to the third predetermined voltage threshold value V3.

[0292] The method further includes, during the analysis phase P3, if the minimum value V min of the voltage V bat is greater than or equal to the third predetermined voltage threshold value V3, a third assignment step 434, where the indicator SOF is assigned as being equal to the third reference indication state S3.

[0293] Otherwise, during the fifth comparison step 436, the minimum value V min of the voltage V bat is compared to the second predetermined voltage threshold value V2.

[0294] The method further includes, during the analysis phase P3, if the minimum value V min of the voltage V bat is greater than or equal to the second predetermined voltage threshold value V2 and strictly less than the third predetermined voltage threshold value V3, a fourth assignment step 438, where the indicator SOF is assigned as being equal to the second reference indication state S2.

[0295] Otherwise, during the sixth comparison step 440, the minimum value V min of the voltage V bat is compared to the first predetermined voltage threshold value V1, called "minimum".

[0296] The method further includes, during the analysis phase P3, if the minimum value V min of the voltage V bat is greater than or equal to the first predetermined voltage threshold value V1 and strictly less than the second predetermined voltage threshold value V2, a fifth assignment step 442, where the indicator SOF is assigned as being equal to the first reference indication state S1.

[0297] Otherwise, the process further includes, during the analysis phase P3, if the minimum value V min of the voltage V bat is strictly less than the first predetermined voltage threshold value V1, a sixth assignment step 444, where the indicator SOF is assigned as equal to the critical indication state SC.

[0298] The second embodiment of the establishment step 400 is advantageous for more accurately estimating the available battery life 24, as it allows this life to be represented with a greater number of states, in this example, four states. The user of the motorized drive device 5 can then be informed more precisely of the number of screen 2 movement cycles that the battery 24 is capable of performing, and can therefore, for example, estimate more accurately when the battery 24 needs recharging.

[0299] It is understood that the establishment step 400 according to the second embodiment is easily generalizable to a number of states of the SOF indicator other than four, which could be, for example, three or five states, allowing the desired degree of precision to be chosen in the estimation of battery autonomy 24.

[0300] We now describe a third implementation of the establishment step 400, referenced as 450 in the figure 5 .

[0301] In this third embodiment of the establishment step 400, the SOF indicator is designed to be able to take four distinct states SC, S4, S5, S6, each associated with a color of the lighting source 39 of the display device 38, as in the second embodiment.

[0302] The third embodiment of the establishment step 400 is implemented in practice when the motorized drive device 5 includes a function for limiting the power consumed by the electromechanical actuator 11, which consists of slowing down the rotational speed R of the electric motor 16 if the power delivered by the battery 24 becomes too high, in order to protect the battery 24.

[0303] Such a function influences the voltage Vbat delivered by the battery 24 during the operating period of the electric motor 16 and, consequently, during the movement of the screen 2 by means of the electromechanical actuator 11.

[0304] Thus, when such a function is implemented, the voltage Vbat delivered by the battery 24 may not fall below a critical threshold value of predetermined voltage Vcrit, which would correspond, in the example of the first and second embodiments, to the transition to the critical indication state SC, even when the autonomy of the battery 24 is critical.

[0305] To take into account such a function, the setting step 400 of the SOF indicator is implemented also taking into account the rotational speed R of the electric motor 16 and, consequently, of the output shaft 20 of the electromechanical actuator 11 and the winding tube 4 and, more particularly, of the maximum value R max of the rotational speed R reached by the electric motor 16 and, consequently, of the output shaft 20 of the electromechanical actuator 11 and the winding tube 4, during a movement of the screen 2 by means of the electromechanical actuator 11, in particular a complete movement of the screen 2.

[0306] Advantageously, in order to implement the third embodiment of the setup step 400, the process further includes, during the initialization phase P1, an additional initialization step 250, called the "speed initialization" step, which consists of initializing a maximum value Rmax of the rotational speed R as being equal to a predetermined value, which may be, for example, equal to 0 revolutions per minute. The initialization step 250 is carried out between the start step 200 and the first end step 230 of the initialization phase P1, for example in parallel with the first measurement step 210, the first recording step 220, and the second modification step 240 of the initialization phase P1.

[0307] Advantageously, the process further comprises, during the measurement phase P2, three additional steps 370, 380, 390, implemented in the loop of the measurement phase P2, throughout the operating period of the electric motor 16, which are as follows: a fifth measurement step 370, called "speed measurement", which consists of measuring the rotational speed R of the electric motor 16, a seventh comparison step 380, called "speed comparison", which consists of comparing the rotational speed R measured during the fifth measurement step 370 with the maximum value R max of the rotational speed R, and a fourth recording step 390, called "speed recording", executed only if the result of the seventh comparison step 380 is that the rotational speed R measured during the fifth measurement step 370 is strictly greater than the maximum value R max of the rotational speed R, which consists of making the maximum value R max of the rotational speed R equal to the value of the rotational speed R measured during the fifth measurement step 370.

[0308] Here and as illustrated in the figure 4, steps 370, 380, 390 of the measurement phase P2 are executed between the first timing step 320 and the verification step 360.

[0309] For example, the fifth measurement step 370 is implemented after the third measurement step 330. In addition, the seventh comparison step 380 and the fourth recording step 390 are implemented in parallel with the first comparison step 340 and the third recording step 350.

[0310] In the third embodiment of the establishment step 400, the method further comprises, during the analysis phase P3, an eighth and a ninth comparison step 452, 456 of the minimum value V min of the voltage V bat to two predetermined threshold voltage values ​​V4, V5, which may be, for example, equal to 9V and 9.5V respectively, and a tenth comparison step 460 of the maximum value R max of the rotation speed R to a predetermined threshold speed value R1, which may be, for example, equal to 4 revolutions per minute.

[0311] During the eighth comparison step 452, the minimum value V min of the voltage V bat is compared to the fifth predetermined threshold voltage value V5.

[0312] The method further includes, during the analysis phase P3, if the minimum value V min of the voltage V bat is greater than or equal to the fifth predetermined voltage threshold value V5, a seventh assignment step 454, where the SOF indicator is assigned as being equal to the sixth reference indication state S6.

[0313] Otherwise, during the ninth comparison step 456, the minimum value V min of the voltage V bat is compared to the fourth predetermined voltage threshold value V4, called "minimum".

[0314] The method further includes, during the analysis phase P3, if the minimum value V min of the voltage V bat is greater than or equal to the fourth predetermined voltage threshold value V4 and strictly less than the fifth predetermined voltage threshold value V5, an eighth assignment step 458, where the SOF indicator is assigned as being equal to the fifth reference indication state S5.

[0315] Otherwise, during the tenth comparison step 460, the maximum value R max of the rotational speed R is compared to the predetermined speed threshold value R1.

[0316] The method further includes, during the analysis phase P3, if the maximum value R max of the rotational speed R is greater than or equal to the predetermined speed threshold value R1 and if the minimum value V min of the voltage V bat is strictly less than the fourth predetermined voltage threshold value V4, a ninth assignment step 462, where the indicator SOF is assigned as being equal to the fourth reference indication state S4.

[0317] Otherwise, the process further includes, during the analysis phase P3, if the maximum value R max of the rotational speed R is strictly less than the predetermined speed threshold value R and if the minimum value V min of the voltage V bat is strictly less than the fourth predetermined voltage threshold value V4, a tenth assignment step 464, where the indicator SOF is assigned as equal to the critical indication state SC.

[0318] The third embodiment of the establishment step 400 is advantageous for taking into account the presence of a power limiting function consumed by the electromechanical actuator 11, based both on the minimum value V min of the voltage V bat measured, during the third measurement step 330, and on the maximum value R max of the rotation speed R of the electric motor 16 measured, during the fifth measurement step 370.

[0319] The battery life 24 is thus estimated accurately, despite the presence of the power consumption limiting function of the electromechanical actuator 11 which influences the measured so-called "open circuit" voltage Vbat.

[0320] As an alternative to the third embodiment, the rotational speed R of the electric motor 16 is directly measured, in particular by means of the counting device.

[0321] As with the second embodiment of the setup step 400, it is understood that the setup step 400 according to the third embodiment can be easily generalized to a number of SOF indicator states other than four, which could be, for example, three or five states. Regardless of the number of states chosen, the tenth comparison step 460 with the maximum value R max of the rotational speed R is implemented to determine whether the SOF indicator is equal to the critical indication state SC or to the fourth reference indication state S4.

[0322] The predetermined voltage threshold value V of the first embodiment 410 of the establishment step 400, the first predetermined voltage threshold value V1 of the second embodiment 430 and the fourth predetermined voltage threshold value V4 of the third embodiment 450 of the establishment step 400 may be identical or different, but these all correspond to a minimum predetermined voltage threshold value for the associated embodiment 410, 430, 450.

[0323] Numerous modifications can be made to the embodiment examples described above, without departing from the scope of the invention as defined by the claims.

[0324] Alternatively, and not shown, the SOF indicator setting step 400 and, optionally, the first display step 480 are implemented during the loop of measurement phase P2, for example, during the end step 360 of measurement phase P2. Thus, the SOF indicator is set and modified in real time during the movement of the screen 2 by means of the electromechanical actuator 11. This allows the battery 24's autonomy to be tracked during the movement of the screen 2.

[0325] Alternatively, and not shown, the power supply device 26 further includes a charger. This charger is configured to be plugged into a wall outlet so as to recharge the battery 24 from a mains power supply. This charger constitutes an external power supply.

[0326] Alternatively, and not shown, the power supply device 26 further includes an auxiliary battery, configured to recharge battery 24. Thus, battery 24 can be recharged by means of the auxiliary battery, which acts as an external power source, particularly when the shading device 3 is located far from a wall outlet. In addition, the auxiliary battery can be used to recharge the battery of other electrical equipment, especially portable devices such as, for example, a mobile phone or a laptop computer. Furthermore, such an auxiliary battery may have at least two electrical outputs, specifically a first output delivering a voltage of 12 volts to supply power to battery 24 and a second output delivering a voltage of 5 volts to supply power to other portable electrical equipment.

[0327] Alternatively, not shown, the electromechanical actuator 11 is inserted into a rail, in particular of square or rectangular cross-section, which can be open at one or both ends, in particular in the assembled configuration of the blackout device 3. Furthermore, the electromechanical actuator 11 can be configured to drive a drive shaft around which travel and / or orientation cords for the screen 2 are wound, which can advantageously be a slatted blind in this case.

[0328] Furthermore, the envisaged embodiments and variants can be combined to generate new embodiments of the invention, without departing from the scope of the invention as defined by the claims.

Claims

1. A method for controlling the operation of a motorized driving device (5), the motorized driving device (5) comprising at least: - an electromechanical actuator (11), - an electronic control unit (15), and - an electrical energy supply device (26), the electromechanical actuator (11) comprising at least one electric motor (16), the electrical energy supply device (26) comprising at least one battery (24), the electronic control unit (15) and the electric motor (16) being supplied with electrical energy from the battery (24), the battery (24) delivering a voltage (Vbat), characterised in that the method comprises at least: - a measurement phase (P2), implemented during a period of operation of the electric motor (16), in which the method comprises at least: - a measurement step during operation (300, 330) of the voltage (Vbat) delivered by the battery (24), and - a recording step during operation (310, 350) of a minimum value (Vmin) of the voltage (Vbat) delivered by the battery (24), - and an analysis phase (P3), in which the method comprises at least: - an establishment step (400) of an indicator (SOF) representative of the battery life of the battery (24), based on the minimum value (Vmin) of the voltage (Vbat) recorded during the measurement phase (P2), and - after the period of operation of the electric motor (16), if the indicator (SOF) is equal to a critical indication state (SC), a routine (500) prohibiting the operation of the electric motor (16), the routine (500) being executed as long as the indicator (SOF) is equal to the critical indication state (SC), and in that the method is implemented when the motorized driving device (5) moves a screen (2) of an occultation device (3), in a movement of the screen (2) requiring the greatest power delivered by the electromechanical actuator (11).

2. The method for controlling the operation of a motorized driving device (5) according to claim 1, characterised in that the movement of the screen (2) requiring the greatest power delivered by the electromechanical actuator (11) is an upward movement of the screen (2).

3. The method for controlling the operation of a motorized driving device (5) according to any one of claims 1 to 2, characterised in that the method further comprises an initialisation phase (P1), implemented prior to the period of operation of the electric motor (16), during which the method further comprises: - a preliminary measurement step (210) of the voltage (Vbat) delivered by the battery (24), and - a preliminary recording step (220) of a value of the voltage (Vbat) measured as being a reference value (Vref), in that the method further comprises, during the routine (500), prohibiting the operation of the electric motor (16) and as long as the indicator (SOF) is equal to the critical indication state (SC): - a subsequent measurement step (520) of the voltage (Vbat) delivered by the battery (24), and - a subsequent comparison step (530) of a value of the measured voltage (Vbat) against the reference value (Vref), in that, if the value of the voltage (Vbat) measured, during the subsequent measurement step (520), is strictly less than a sum of the reference value (Vref) of the voltage (Vbat) and a first predetermined correction factor (ΔV), the method implements again, during the routine (500), the subsequent measurement step (520) and the subsequent comparison step (530), after a delay step (540), in that, if the value of the voltage (Vbat) measured, in the subsequent measurement step (520), is greater than or equal to the sum of the reference value (Vref) of the voltage (Vbat) and the first predetermined correction factor (ΔV), the method further comprises, during the routine (500): - a modification step (550) of the indicator (SOF), so that it is different from the critical indication state (SC), and - an end step (560) of the routine (500), and in that the first predetermined correction factor (ΔV) is a predetermined voltage value greater than or equal to zero.

4. The method for controlling the operation of a motorized driving device (5) according to claim 3, characterised in that the electrical energy supply device (26) further comprises a photovoltaic panel (25), the photovoltaic panel (25) supplying electrical energy to the battery (24), in that the method further comprises: - during the initialisation phase (P1), a preliminary modification step (240) of the reference value (Vref) of the voltage (Vbat) with a second correction factor (ΔC1), the second correction factor (ΔC1) being a function of the intensity (Ipv) of the electric current measured at the photovoltaic panel (25), at the time of the preliminary measurement step (210) of the voltage (Vbat) delivered by the battery (24) during the initialisation phase (P1), and - during the routine (500), if the indicator (SOF) equals the critical indication state (SC), a subsequent modification step (570), executed between the subsequent measurement step (520) and the subsequent comparison step (530) of the routine (500), of the value of the measured voltage (Vbat) with a third correction factor (ΔC2), the third correction factor (ΔC2) being a function of the intensity (Ipv) of the electric current measured at the photovoltaic panel (25), at the time of the subsequent measurement step (520) of the voltage (Vbat) delivered by the battery (24) during the routine (500).

5. The method for controlling the operation of a motorized driving device (5) according to any one of claims 1 to 4, characterised in that, during the establishment step (400) of the indicator (SOF), the indicator (SOF) is defined (410; 430) as being equal to the critical indication state (SC) if the minimum value (Vmin) of the voltage (Vbat) is strictly less than a predetermined minimum voltage threshold value (V; V1).

6. The method for controlling the operation of a motorized driving device (5) according to any one of claims 1 to 4, characterised in that, during the measurement phase (P2), the method further comprises: - a measurement step (370) of a rotational speed (R) of the electric motor (16), and - a recording step (390) of a maximum value (Rmax) of the rotational speed (R) of the electric motor (16), and in that, during the establishment step (400) of the indicator (SOF), the indicator (SOF) is defined (450) as being equal to the critical indication state (SC), if the minimum value (Vmin) of the voltage (Vbat) recorded is strictly less than a predetermined minimum voltage threshold value (V4) and if the maximum value (Rmax) of the rotational speed (R) recorded is strictly less than a predetermined speed threshold value (R1).

7. The method for controlling the operation of a motorized driving device (5) according to any one of claims 1 to 6, characterised in that the method further comprises, during the analysis phase (P3), a display step (480, 580) of the indicator (SOF) on a display device (38).

8. A motorized driving device (5), the motorized driving device (5) comprising at least: - an electromechanical actuator (11), - an electronic control unit (15), and - an electrical energy supply device (26), the electromechanical actuator (11) comprising at least one electric motor (16), the electrical energy supply device (26) comprising at least one battery (24), the electronic control unit (15) and the electric motor (16) being supplied with electrical energy from the battery (24), the battery (24) delivering a voltage (Vbat), characterised in that the electronic control unit (15) of the motorized driving device (5) is configured to implement the method according to any one of claims 1 to 7.

9. An occultation device (3) comprising at least: - a screen (2), and - a motorized driving device (5), the screen (2) being configured to be moved by the electromechanical actuator (11) of the motorized driving device (5), characterised in that the motorized driving device (5) is according to claim 8.

10. The occultation device (3) according to claim 9, characterised in that the occultation device (3) further comprises a winding tube (4), in that the screen (2) can be rolled onto the winding tube (4), and in that the winding tube (4) is arranged to be rotated by the electromechanical actuator (11).