METHOD FOR FILTERING AIR BY A VENTILATION SYSTEM OF AT LEAST ONE ELECTRIC OR HYBRID MOTOR VEHICLE

Abstract

The invention relates to a method for filtering air by a ventilation system of at least one electric or hybrid motor vehicle, comprising a reception step (E1) by the controller of the pollutant particle concentration, the predetermined area requiring filtration when the expected pollutant particle concentration is greater than a predetermined threshold value, and an activation step (E2) of the ventilation system for a filtration cycle when said vehicle is geolocated in the predetermined area, when the vehicle is locked, when the engine is off, and when the battery has a state of charge greater than a predetermined threshold charge value, the sum of the filtration time of each filtration cycle being equal to a cumulative filtration time, said vehicle having a cumulative filtration time less than a predetermined threshold value for cumulative filtration time. Figure 1

Description

Title of the invention: METHOD FOR FILTERING AIR BY A VENTILATION SYSTEM OF AT LEAST ONE ELECTRIC OR HYBRID MOTOR VEHICLE

[0001] The invention relates to air treatment means for reducing pollution.

[0002] Prior art patent application FR3109099 is known, which describes a fleet of electric or hybrid vehicles for treating ambient air. Each vehicle is equipped with air purification means. The air purification means are activated and controlled remotely from a control center. The vehicle must be parked and located in the area where the pollution level is greater than or equal to a setpoint value. In addition, the vehicle's state of charge is checked before the air purification means are activated. The air purification means are deactivated by the control center when the pollution level is below the setpoint value. However, a drawback remains.Air purification is only activated when the pollution level is equal to or greater than the set point and stops as soon as the pollution level falls below the set point. However, pollutants are emitted continuously. When the pollution level drops below the set point, it will rise again as soon as the air purification system is deactivated. Each vehicle's purification system will undergo successive cycles of air purification and rest, which may affect the charge level of vehicles that will be used very frequently, and consequently damage their batteries.

[0003] The objective of the present invention is to remedy these drawbacks and to reduce the level of air pollution more effectively.

[0004] To achieve this objective, the invention proposes a method for filtering air using a ventilation system of at least one electric or hybrid motor vehicle, said vehicle comprising an electric motor and a battery having a state of charge corresponding to the remaining available capacity of the battery to supply electrical energy to the electric motor at a given time, a geolocation means, and a controller configured to communicate with a means for forecasting the concentration of polluting particles in a predetermined area over a predetermined period of time, characterized in that said method comprises the following steps: - a reception step by the controller of the concentration of polluting particles determined by the forecasting method, the predetermined area requiring filtering when the predicted concentration of polluting particles is greater than a value predetermined concentration threshold, said controller being configured to determine a filtering start time; - a step of activating the ventilation system at the start time of the filtering for a filtering cycle of a filtering duration equal to the predetermined time period when said vehicle is geolocated in the predetermined area, when the vehicle is locked, when the engine is off and when the battery has a state of charge greater than a predetermined charge threshold value, said ventilation system being capable of performing several filtering cycles, the sum of the filtering duration of each filtering cycle being equal to a cumulative filtering duration, said vehicle having a cumulative filtering duration less than a predetermined cumulative filtering duration threshold value.

[0005] Thanks to the invention, it is possible to effectively reduce the concentration of polluting particles without heavy installation and without impacting the comfort of the vehicle owner.

[0006] Advantageously, said method includes a step of deactivating the ventilation system when said vehicle is unlocked, when the engine is in operation, when the vehicle battery has a state of charge lower than the predetermined charge threshold value or when the cumulative filtering time is greater than the predetermined cumulative filtering time threshold value.

[0007] Thus, the vehicle remains ready for use by its owner at all times, even when said vehicle is filtering the air.

[0008] Advantageously, said process includes a step of deactivating the ventilation system when the concentration of polluting particles predicted by said prediction means is less than the predetermined concentration threshold value.

[0009] This avoids running the vehicle's ventilation system more than necessary, so that its autonomy is preserved.

[0010] Advantageously, said method includes a warning step during which the owner of said vehicle is informed by means of communication of the activation of the ventilation system, the filtration time and the cumulative filtration time.

[0011] In this way, the owner can interrupt the filtering if he wishes, in particular to preserve the maximum autonomy of his vehicle.

[0012] Preferably, said predetermined period of time is equal to 24 hours.

[0013] Thus, each day, the forecasting device transmits the particle concentration pollutants are forecast for the following day. This allows for good monitoring of the concentration of polluting particles in the predetermined area.

[0014] Preferably, said method employs a plurality of electric or hybrid motor vehicles, the ventilation system of each vehicle being capable of being activated or deactivated independently of the other vehicles.

[0015] In this way, air filtration is more effective because the concentration of polluting particles is reduced more quickly.

[0016] Preferably, said vehicle includes a human-machine interface, the predetermined zone, predetermined concentration threshold value, predetermined charge threshold value and / or predetermined cumulative filtering time threshold value being determined by the vehicle owner via said human-machine interface.

[0017] Thus, the vehicle owner can configure the air filtration in such a way as to be comfortable for him, particularly in terms of the electrical energy consumption of his vehicle or vehicles.

[0018] In addition, the invention relates to an electric or hybrid motor vehicle comprising a computer configured to implement the air filtration process by a ventilation system of at least one previously described electric or hybrid motor vehicle.

[0019] Furthermore, the invention relates to a computer program comprising instructions which, when the program is executed by a computer, lead the latter to implement the steps of the air filtration process by a ventilation system of at least one electric or hybrid motor vehicle previously described.

[0020] The invention will be further detailed by the description of a non-limiting embodiment, and on the basis of the attached figure illustrating the invention, in which [Fig.1] schematically illustrates, in the form of a logic diagram, a method of filtering air by a ventilation system of at least one electric or hybrid motor vehicle.

[0021] Figure 1 schematically illustrates, in the form of a flowchart, a method for filtering air using a ventilation system from at least one electric or hybrid motor vehicle. Preferably, this method employs a plurality of vehicles so that air filtration is faster and more efficient. For example, for a car dealership, it is advantageous to be able to ensure air filtration, which will be all the more effective due to the large number of vehicles positioned in the same area. In the case where the method employs several vehicles, the ventilation system of each vehicle is capable of being activated or deactivated independently of the others. Each vehicle includes an electric motor and a battery to supply the electric motor with electrical energy.The battery has a state of charge which corresponds to the remaining available capacity of the battery to supply electrical power to the electric motor. at a given time. In addition, each vehicle has a geolocation device and a controller configured to communicate with a means of forecasting the concentration of polluting particles in a predetermined area and over a predetermined period. Preferably, the predetermined period is 24 hours. For example, the controller is an intelligent control unit, that is, an electronic control unit configured to manage the vehicle's electronic and electrical equipment. During a reception step (E1), the forecasting means transmits the concentration of polluting particles in the predetermined area over the predetermined period to each vehicle's controller. The predetermined area is considered to require air filtration to reduce the concentration of polluting particles when the predicted concentration of polluting particles exceeds a predetermined threshold value.Based on this information, the controller determines a filtering start time, which may be different from or the same as the time from which the forecasting system predicts that the concentration of polluting particles will exceed the predetermined threshold value. During an activation step E2, the ventilation system of each vehicle is activated to perform a filtering cycle at the filtering start time determined by the controller during the acceptance step EL. The filtering cycle lasts for a period equal to the predetermined time period. For example, if the forecasting system predicts the concentration of polluting particles over 24 hours, then the filtering cycle also lasts 24 hours, until the polluting particle concentration is received for the next predetermined time period, in this case, the next 24 hours.The ventilation system is capable of performing multiple filtration cycles when the concentration of polluting particles has not decreased sufficiently during the previous filtration cycle to bring it below the predetermined threshold value. The sum of the filtration time of each cycle equals the cumulative filtration time. For the ventilation system to activate, it is verified for each vehicle that it is located within the predetermined zone using the vehicle's geolocation system, that the vehicle is locked, that the engine is off, that the battery has a charge level above a predetermined threshold value, and that the cumulative filtration time is below a predetermined threshold value.Optionally, the process includes a step of deactivating the ventilation system when the vehicle is unlocked by its owner, when the engine is started, when the vehicle battery has a state of charge below the predetermined charge threshold value, or when the cumulative filtering time is above the threshold value. of a predetermined cumulative filtration time. Alternatively, the method includes a step for deactivating the ventilation system when the concentration of polluting particles predicted by the forecasting means is below the predetermined concentration threshold value. Preferably, the vehicle includes a human-machine interface. The human-machine interface is a device enabling interaction between the owner and the vehicle. It may, for example, be a touchscreen, a voice control device, or a button. The predetermined zone, the predetermined concentration threshold value, the predetermined load threshold value, and / or the predetermined cumulative filtration time threshold value are determined by the vehicle owner via the human-machine interface.Preferably, during a warning stage, the owner of the vehicle is informed by a means of communication about the activation of the ventilation system, the filtration time, and the cumulative filtration time. When the process involves multiple vehicles, the owner receives this information for each of their vehicles. For example, the means of communication could be configured to send an email to the owner. It could also be configured to send a notification to the owner's mobile device, such as their mobile phone.

[0022] Furthermore, the invention relates to an electric or hybrid motor vehicle comprising a computer configured to implement the method described above, and a computer program configured to implement said method.

Claims

Demands

1. A method for filtering air by a ventilation system of at least one electric or hybrid motor vehicle, said vehicle comprising an electric motor and a battery having a state of charge corresponding to the remaining available capacity of the battery to supply electrical energy to the electric motor at a given time, a geolocation means, and a controller configured to communicate with a means for forecasting the concentration of polluting particles in a predetermined area over a predetermined period of time, characterized in that said method comprises the following steps: - a receiving step (E1) by the controller of the concentration of polluting particles determined by the forecasting means, the predetermined area requiring filtration when the predicted concentration of polluting particles is greater than a predetermined threshold concentration value,said controller being configured to determine a filtering start time; - an activation step (E2) of the ventilation system at the filtering start time for a filtering cycle with a filtering duration equal to the predetermined time period when said vehicle is geolocated in the predetermined area, when the vehicle is locked, when the engine is off, and when the battery has a state of charge greater than a predetermined charge threshold value, said ventilation system being capable of performing several filtering cycles, the sum of the filtering duration of each filtering cycle being equal to a cumulative filtering duration, said vehicle having a cumulative filtering duration less than a predetermined cumulative filtering duration threshold value.

2. Method according to claim 1 characterized in that said method comprises a step of deactivating the ventilation system when said vehicle is unlocked, when the engine is in operation, when the vehicle battery has a state of charge lower than the predetermined charge threshold value or when the cumulative filtering time is greater than the predetermined cumulative filtering time threshold value.

3. The method according to claim 1, characterized in that said method comprises a step of deactivating the ventilation system when the concentration of polluting particles predicted by said means of prediction is less than the predetermined concentration threshold value.

4. A method according to any one of claims 1 to 3 characterized in that said method comprises a warning step during which the owner of said vehicle is informed by means of communication of the activation of the ventilation system, the filtration time and the cumulative filtration time.

5. A method according to any one of claims 1 to 4 characterized in that said predetermined time period is equal to 24 hours.

6. A method according to any one of claims 1 to 5 characterized in that said method employs a plurality of electric or hybrid motor vehicles, the ventilation system of each vehicle being capable of being activated or deactivated independently of the other vehicles.

7. A method according to any one of claims 1 to 6 characterized in that said vehicle comprises a human-machine interface, the predetermined zone, predetermined concentration threshold value, predetermined charge threshold value and / or predetermined cumulative filtering time threshold value being determined by the vehicle owner via said human-machine interface.

8. Electric or hybrid motor vehicle comprising a computer configured to implement the air filtration process by a ventilation system of at least one electric or hybrid motor vehicle according to any one of claims 1 to 7.

9. A computer program comprising instructions which, when the program is executed by a computer, cause the computer to carry out the steps of the process of filtering air by a ventilation system of at least one electric or hybrid motor vehicle according to any one of claims 1 to 7.