Projection system for a vehicle, vehicle comprising a projection system

Abstract

The invention provides a projection system for a vehicle and the vehicle comprising the projection system. The projection system for the vehicle comprises a control module used for obtaining the charging state of the vehicle and processing the charging state of the vehicle to obtain a video stream representing the charging state; the projection module is used for reversely projecting the video stream representing the charging state to a rear windshield of the vehicle; the rear windshield is provided with a projection film and used for presenting the charging state of the vehicle so that a user can check the charging state of the vehicle outside the vehicle. The user does not need to insert a charging gun on a charging pile after getting off, run to the front car window part, lie on the front car window and check charging states such as charging or not through display equipment such as an instrument panel, so that the user experience of checking the charging states by the user is improved.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and more specifically, to a projection system for a vehicle and a vehicle comprising the projection system. Background Art

[0002] The vehicle is also called an electric vehicle (EV), which can refer to a car that uses electricity as a power source or uses electricity to drive an electric motor to drive the vehicle. At present, electric vehicles can be divided into the following types: Battery Electric Vehicle (BEV), Plug-in Hybrid Electric Vehicle (PHEV), Extended-Range Electric Vehicle (EREV) and Fuel Cell Electric Vehicle (FCEV). Among them, BEV can completely rely on the electric energy stored in the battery to drive the electric motor to achieve the power output of the vehicle, without an internal combustion engine. PHEV can be driven by both an internal combustion engine and an electric motor, and the electric motor can be charged by an external power source. EREV is mainly driven by an electric motor, and the internal combustion engine acts as a generator to charge the battery and does not directly drive the wheels. FCEV can generate electricity through a hydrogen fuel cell to drive the electric motor.

[0003] At present, when a vehicle is parked for charging, after the user gets out of the vehicle and inserts the charging gun into the charging pile, he often needs to run to the front window, lie on the front window, and judge the charging status of the vehicle through the display device such as the instrument panel. This way of checking the charging status of the vehicle is relatively complicated, resulting in a low user experience. Summary of the invention

[0004] The embodiments of the present application are directed to providing a projection system for a vehicle and a vehicle including a projection system, so that a user can view the charging status outside the vehicle, which is introduced from the following two aspects.

[0005] In a first aspect, a projection system for a vehicle is provided, comprising: a control module, for acquiring a charging status of the vehicle, and processing the charging status of the vehicle to obtain a video stream representing the charging status; a projection module, for reversely projecting the video stream representing the charging status onto a rear windshield of the vehicle; and a rear windshield, provided with a projection film, for presenting the charging status of the vehicle so that a user can view the charging status of the vehicle from the outside of the vehicle.

[0006] As a possible implementation method, the control module is used to obtain the vehicle's charging information from the battery management module and determine the vehicle's charging status based on the charging information, wherein the charging information includes one or more of the following: charging current, charging voltage, and charging time; the vehicle's charging status is used to indicate one or more of the following: whether the vehicle is connected to the charging gun; the vehicle's power information; the vehicle's charging power; whether the vehicle has finished charging; and the time required to fully charge the vehicle.

[0007] As a possible implementation method, the projection system also includes: a control module, which is used to obtain the driving status of the vehicle from the driving control module and process the driving status of the vehicle to obtain a video stream representing the driving status; a projection module, which is used to reversely project the video stream representing the driving status to the rear windshield of the vehicle; and a rear windshield, which is used to present the driving status of the vehicle so that the user can view the driving status of the vehicle outside the vehicle.

[0008] As a possible implementation, the driving control module includes an autonomous driving domain controller of the vehicle, which is used to obtain the driving status of the vehicle from the vehicle's automatic emergency braking system and pedestrian emergency braking system.

[0009] As a possible implementation, the battery management module and the driving control module include a three-electric control unit of the vehicle, which is used to provide the control module with the charging status and driving status of the vehicle.

[0010] As a possible implementation method, the projection system also includes: a control module, which is used to obtain the speed information of the vehicle traveling behind the vehicle from the sensor module, and process the speed information of the vehicle traveling behind to obtain a video stream representing the speed information of the vehicle traveling behind; a projection module, which is used to reversely project the video stream representing the speed information of the vehicle traveling behind to the rear windshield of the vehicle; and the rear windshield, which is used to present reminder information about the speed information of the vehicle traveling behind.

[0011] As a possible implementation, the reminder information presented on the rear windshield is used to remind the rear vehicle that the speed is exceeding the limit.

[0012] As a possible implementation, the projection system further includes:

[0013] A control module, used for acquiring unlocking information and / or locking information of the vehicle from the vehicle body domain controller, and processing the unlocking information and / or locking information to obtain a video stream representing the unlocking information and / or locking information;

[0014] A projection module, used for projecting a video stream representing unlocking information and / or locking information back onto a rear windshield of the vehicle;

[0015] The rear windshield is used to present information indicating vehicle unlocking and / or locking. As a possible implementation, the vehicle driving state information is used to indicate vehicle braking information and / or vehicle driving steering information.

[0016] In a second aspect, a vehicle is provided, comprising a projection system according to any one of the implementations of the first aspect.

[0017] As a possible implementation, the vehicle is provided with an interior rearview mirror, and a control module is used to control the interior rearview mirror to present the road conditions behind the vehicle in response to presenting the charging status of the vehicle and / or the driving status of the vehicle on the rear windshield.

[0018] In the embodiment of the present application, the projection system can reversely project the vehicle charging status onto the rear windshield of the vehicle, so that when the user inserts the charging gun into the vehicle, the charging status of the vehicle can be directly viewed on the rear windshield of the vehicle. Compared with the traditional solution, the user needs to view the charging status of the vehicle through the display of the dashboard, which helps to improve the user experience of viewing the charging status of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the vehicle structure applicable to the embodiment of the present application.

[0020] Figure 2 It is a schematic diagram of vehicle charging status display provided by related technology.

[0021] Figure 3 It is a schematic diagram of the structure of the projection system provided in an embodiment of the present application.

[0022] Figure 4 yes Figure 3 An example diagram of the working principle of the projector in the projection system.

[0023] Figure 5 2 is a diagram showing an example of the structure of a projection system provided in an embodiment of the present application.

[0024] Figure 6 It is a schematic flowchart of the operation of the projection system provided in an embodiment of the present application.

[0025] Figure 7 It is a schematic diagram of the vehicle structure provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] The embodiment of the present application can be applied to the scenario of providing vehicle charging status information to users outside the vehicle. For ease of understanding, the vehicle structure mentioned in the embodiment of the present application is described in detail below.

[0027] like Figure 1As shown, in the vehicle 10 , the Powertrain Control Module Unit 11 (PCMU) and the Digital Cockpit Head Unit 12 (DHU) are two important components, each of which is responsible for a different functional area and together contributes to the safety, performance and user experience of the vehicle 10 .

[0028] Among them, PCMU11 is mainly responsible for coordinating and managing the interaction between the automobile motor system, the battery management system (BMS) and the vehicle control unit (VCU), collecting and forwarding relevant information such as vehicle gear, battery, driving, etc., including information such as battery power processed by BMS. DHU12 is the core control unit for vehicle information display, responsible for integrating and controlling the driving information display and entertainment information system of the vehicle 10, processing and forwarding information such as the design of the human-machine interface (HMI), battery charging status, driving status, etc., and generating and forwarding video streams of relevant information.

[0029] As the autonomous driving function of the vehicle 10 becomes more and more mature, more and more vehicles 10 are equipped with an automated driving control unit (ADCU) 13, which integrates the three parts of automatic perception, decision-making and control of autonomous driving. ADCU 13 receives data collected by multiple sensors (such as cameras, millimeter-wave radars, laser radars, etc.), obtains dynamic data of the vehicle 10 (vehicle speed, pedal signals, etc.) through VCU, and can monitor the movement trajectory of the vehicle 10 in real time and plan the path.

[0030] The ADCU 13 in the vehicle 10 is mainly responsible for coordinating or managing the Automatic Emergency Braking (AEB) system and the Pedestrian Emergency Braking (PEB) system. AEB mainly monitors the vehicles and other obstacles ahead through cameras and radars, and determines the collision risk based on factors such as vehicle speed and distance. When the driver does not react in time, AEB can autonomously initiate braking to avoid collision or reduce the severity of the collision; while PEB uses a more complex combination of sensors (such as cameras, radars, infrared cameras, etc.) to identify and predict the movement trajectory of pedestrians, and determines the collision risk based on factors such as vehicle speed and distance. When the driver does not react in time, PEB can autonomously initiate braking to avoid collision or reduce the severity of collision with pedestrians.

[0031] When the vehicle 10 is driving, the above-mentioned automatic driving function can help improve the safety of its own driving. Often, the operating condition of the vehicle 10 is a situation where multiple vehicle series coexist and ride together. In view of the relatively small interaction between vehicles, the relevant technology can exchange information with other vehicles through changes in the flashing mode and flashing frequency of the taillights of the vehicle 10.

[0032] When the vehicle 10 is parked and charging, Figure 1 As shown, after the user gets off the vehicle and inserts the charging gun into the charging pile 14, he often needs to run to the front window 15, lie on the front window 15, and determine whether to start charging through a display device such as a dashboard. When the vehicle 10 is parked and charging, the user cannot check the charging status outside the vehicle, such as Figure 2 As shown, after the user gets off the vehicle 10 and inserts the charging gun into the charging pile 14, the related technology uses the B-pillar 16 to display the charging status 17. However, due to the small area of ​​the B-pillar 16, the displayed image is even smaller, which may cause the user to still need to go to the vicinity of the driving position and check the charging status 17 through the B-pillar 16. Therefore, it is inconvenient for the user to check the charging status 17 outside the vehicle.

[0033] In response to the above problem that it is inconvenient for users to view the charging status outside the vehicle, the present application projects the vehicle's charging status on the vehicle's rear windshield so that users can view the vehicle's charging status outside the vehicle. Since the area of ​​the vehicle's rear windshield is larger than the area of ​​the B-pillar 16, the displayed screen area is larger, which helps to improve the user experience of users viewing the charging status. For example, a larger font can be displayed on the vehicle's rear windshield, which helps users to view the information displayed on the rear windshield at a certain distance from the vehicle. For another example, richer content can be provided on the vehicle's rear windshield so that users can view more detailed charging status information outside the vehicle.

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0035] like Figure 3 As shown, an embodiment of the present application provides a projection system 30 for a vehicle, including: a control module 31, used to obtain the charging status of the vehicle, and process the charging status of the vehicle to obtain a video stream representing the charging status; a projection module 32, used to reversely project the video stream representing the charging status to a rear windshield 33 of the vehicle; the rear windshield 33 is provided with a projection film, which is used to present the charging status of the vehicle so that the user can view the charging status of the vehicle outside the vehicle.

[0036] Optionally, the optical properties of the projection film enable it to effectively block light when viewed from the inside, while remaining transparent when viewed from the outside, thereby serving as a carrier for the projection and allowing users outside the vehicle to see the projected image.

[0037] In some embodiments, the control module 31 is used to obtain the charging information of the vehicle from the battery management module, and determine the charging status of the vehicle based on the charging information, wherein the charging information includes one or more of the following: charging current, charging voltage, and charging time; the charging status of the vehicle is used to indicate one or more of the following: whether the vehicle is connected to the charging gun; the vehicle's power information; the vehicle's charging power; whether the vehicle has finished charging; and the time required to fully charge the vehicle.

[0038] Users outside the vehicle can improve safety and avoid misoperation and potential safety risks by viewing the above charging status information. For example, when the charging status of the vehicle is used to indicate whether the vehicle is connected to the charging gun, it helps prevent others from accidentally unplugging the charging gun and warns external users that the vehicle is charging, thereby reducing unnecessary approach or interference. For another example, when the charging status of the vehicle is used to indicate the power information of the vehicle, it enables external users to quickly understand the power status of the vehicle, so as to select a suitable vehicle in a shared car or rental service, thereby helping to improve convenience. When the charging status of the vehicle is used to indicate whether the vehicle has finished charging, the user can be notified of the end of charging in a timely manner, thereby helping to improve the parking space turnover rate, avoid occupying the charging space for a long time, and promote resource sharing when multiple vehicles are waiting in line for charging. It can help the scheduling system allocate resources more efficiently so that each user can complete charging as soon as possible. When the charging status of the vehicle is used to indicate the time required for the vehicle to be fully charged, it can help other users waiting to charge the vehicle at the charging pile location to arrange their time reasonably and improve charging efficiency.

[0039] In other embodiments, the vehicle's charging status can be used to indicate the real-time temperature information of the battery pack. During fast charging, it can help the user monitor the temperature of the battery during the charging process and remind the user to avoid damage to the battery due to extreme temperatures. The vehicle's charging status can also be used to indicate charging failures or abnormal conditions, report detected charging problems such as overvoltage, undervoltage, overtemperature, communication errors, etc., and may provide corresponding solutions.

[0040] The embodiments of the present application do not limit the charging status of the vehicle. The charging status of the vehicle can be used to indicate the battery state of health (SOH): SOH is a relative indicator of the current health state of the battery, usually expressed as a percentage (100% represents the state of a new battery), and the SOH will gradually decrease with the use and aging of the battery; and the charging status of the vehicle can also be used to indicate the charging equipment information: if non-original charging equipment or charging piles are used, information such as the manufacturer and model of the equipment may be displayed on the dashboard.

[0041] As an example, based on the projection system for a vehicle provided in an embodiment of the present application, when the user gets off the vehicle to charge and the charging gun is connected to the charging pile, etc., the battery management module synchronously sends a charging status-related signal to the control module 31. The control module 31 performs calculations and integrates the charging status-related signal and transmits it to the projection module 32 in the form of "text plus animation". The projection module 32 projects the charging status information in the form of "text plus animation" onto the rear windshield 33 so that the user can easily obtain the charging status information.

[0042] As an example, the battery management module includes a PCMU of the vehicle, which is used to provide the vehicle's charging status to the control module 31. Since the PCMU can collect accurate data from the BMS in real time, such as voltage, current, temperature, etc., it helps to provide reliable charging status data to the control module 31 in a timely manner, so that the control module 31 can process the charging status information more efficiently.

[0043] The above are functions of the projection system provided in the embodiment of the present application when the vehicle is parked and charging. During the driving of the vehicle, the projection system provided in the embodiment of the present application can also be used to present the driving status of the vehicle, and the implementation method can be the following methods:

[0044] As mentioned above, the automatic driving function can help improve the safety of the vehicle while it is driving. However, the driving condition of the vehicle is often a situation where multiple vehicle series coexist and ride together. In view of the relatively small interaction between vehicles, the relevant technology can exchange information with other vehicles through the flashing mode and flashing frequency of the vehicle's taillights. However, the interactive function through the flashing of the vehicle's taillights and its optimization degree may be limited by the safety of the lights and cannot be expanded.

[0045] In view of the above problems, the projection system provided in the embodiment of the present application may also include: a control module, which is used to obtain the driving status of the vehicle from the driving control module, and process the driving status of the vehicle to obtain a video stream representing the driving status; a projection module, which is used to reversely project the video stream representing the driving status to the rear windshield of the vehicle; and a rear windshield, which is used to present the driving status of the vehicle so that the user can view the driving status of the vehicle from the outside of the vehicle. Compared with the related art of exchanging information with other vehicles through the flashing mode and flashing frequency of the vehicle taillights, the rear windshield is used to display the content used for information interaction. Since the rear windshield has a larger area, it can display richer content, which helps to realize that the interactive function and its optimization degree are no longer limited by the safety of the lights and cannot be expanded.

[0046] In some embodiments, the vehicle's driving status information may be used to indicate the vehicle's braking information, and / or the vehicle's driving steering information.

[0047] As an example, based on the projection system provided in the embodiment of the present application, the control module performs functional logic judgment of driving state-related scenes. If it is determined that the user turns or brakes during driving, the driving state information such as "the vehicle is braking" / "turning left" / "turning right" will be transmitted to the projection module in the form of "text plus animation". The projection module projects the driving state information in the form of "text plus animation" onto the rear window to remind the external vehicle user. For example, when the vehicle is driving at a low speed, the vehicle brakes and prompts the user of the rear vehicle "the vehicle is braking" in time through the rear windshield, giving the user of the following vehicle a more obvious interactive reminder, which helps to avoid minor collisions between vehicles, thereby affecting driving safety; or, when the vehicle is driving at a high speed, the vehicle needs to change lanes, not only reminding the user of the following vehicle through the turn signal, but also prompting the user of the following vehicle "turning left" / "turning right" in time through the rear windshield, which helps to avoid the rear-end collision and other traffic accidents when the rear vehicle is close to the vehicle, once the front vehicle slows down slightly when turning, the user of the rear vehicle will not have time to respond.

[0048] In other embodiments, the vehicle's driving status information can also be used to indicate the acceleration / deceleration status, that is, to prompt external vehicle users that their own vehicle is accelerating or decelerating, especially in the case of sudden deceleration on the highway, so that the driver behind can react in advance; or the vehicle's driving status information can also be used to indicate emergency warnings, that is, when an emergency situation is detected (such as a tire blowout, system failure), an obvious warning sign is displayed through the rear windshield to allow other road users to avoid it in time.

[0049] As an example, the driving control module includes the vehicle's autonomous driving domain controller, which is used to obtain the vehicle's driving status from the vehicle's AEB\PEB. The vehicle driving status obtained by the autonomous driving domain controller from AEB\PEB includes the predicted information of the vehicle's driving behavior. For example, when AEB\PEB predicts that the vehicle is about to make an emergency brake, the information that the vehicle is about to make an emergency brake is provided to the control module, so that the control module processes the vehicle's driving status in advance and obtains video stream information representing the driving status. Then, the corresponding processing results and video stream information are transmitted to the projection module, which helps to remind the user outside the vehicle that the vehicle is about to brake earlier, thereby improving safety. Although functions such as AEB\PEB can assist users in driving planning, they can only assist the vehicle's own vehicle in emergency braking or early deceleration when avoiding traffic risks, and may not be able to avoid the risk of active collision or rear-end collision from other vehicles. The autonomous driving domain controller transmits the predicted driving behavior information of its own vehicle obtained from AEB\PEB to the control module. When the own vehicle has not yet performed this driving behavior, the driving status is displayed through the rear windshield in advance to remind users outside the vehicle, which helps other vehicle users to obtain the driving behavior of their own vehicle in advance, increases the prediction time for other vehicles to prevent collision with their own vehicle, and improves the safety of the entire vehicle on the road.

[0050] As another example, the driving control module may also include the vehicle's PCMU, which is used to provide the vehicle's driving status to the control module. Since the PCMU can be used to provide the control module with not only the vehicle's charging status but also the vehicle's driving status, the complexity of information acquisition is simplified. The PCMU helps the vehicle achieve unified management of the motor, battery, and the entire vehicle, which can improve the integration of the vehicle system and make the coordination between the various subsystems smoother. The PCMU can also share sensors and other hardware resources, which helps reduce redundant design and thus reduce costs.

[0051] During the driving process of the vehicle, the projection system provided by the embodiment of the present application can also be used to present a reminder message for the speed information of the vehicle traveling behind. Optionally, the projection system of the vehicle may also include: a control module for obtaining the speed information of the vehicle traveling behind the vehicle from the sensing module, and processing the speed information of the vehicle traveling behind the vehicle to obtain a video stream representing the speed information of the vehicle traveling behind; a projection module for reversely projecting the video stream representing the speed information of the vehicle traveling behind the vehicle to the rear windshield of the vehicle; and a rear windshield for presenting a reminder message for the speed information of the vehicle traveling behind the vehicle. For example, the reminder message presented by the rear windshield is used to remind the rear vehicle of speeding. When the rear vehicle is detected to be speeding, the system can immediately display the corresponding warning message on the rear windshield, so that the rear driver can quickly realize the potential dangerous situation and take appropriate measures (such as appropriate deceleration, maintaining a larger distance between vehicles, etc.), thereby reducing the risk of rear-end collisions.

[0052] The above-mentioned sensing module can be implemented by using various types of sensors and sensing technologies. The selection of sensors and sensing technologies may depend on factors such as the accuracy requirements of the system, cost considerations, installation convenience, and environmental adaptability.

[0053] In some embodiments, the sensing module may include a radar sensor, such as a millimeter wave radar, which can accurately measure relative speed and distance. It has high resolution and anti-interference ability, which helps to work stably in adverse weather conditions. Alternatively, a laser radar can be used to calculate the distance and speed of the target by emitting a laser beam and receiving the reflected signal.

[0054] In other embodiments, the sensing module includes a camera and computer vision. For example, a monocular or binocular camera combined with an image processing algorithm can extract the vehicle's speed information from the video stream. The binocular camera can also provide stereo vision, which helps to increase the accuracy of ranging.

[0055] During the process of unlocking and / or locking the vehicle, the projection system provided by the embodiment of the present application can also be used to present information indicating the unlocking and / or locking of the vehicle. Optionally, the projection system of the vehicle can also include: a control module, used to obtain the unlocking and / or locking information of the vehicle from the body domain controller, and process the unlocking and / or locking information to obtain a video stream indicating the unlocking and / or locking information; a projection module, used to reversely project the video stream indicating the unlocking and / or locking information to the rear windshield of the vehicle; and a rear windshield, used to present information indicating the unlocking and / or locking information of the vehicle.

[0056] For example, when a user unlocks / locks a vehicle through a mobile phone-related application (Application, APP), a near field communication (Near Field Communication, NFC) function, or a frequency-operated button (Frequency-Operated Button, FOB), the body domain controller obtains the vehicle's unlocking information and / or locking information.

[0057] When the vehicle body domain controller obtains the unlocking information of the vehicle, the control module obtains the unlocking information of the vehicle from the vehicle body domain controller, processes the unlocking information, obtains a video stream representing the unlocking information (such as relevant animation effects such as "welcome"), and then projects the video stream representing the unlocking information back to the rear windshield of the vehicle through the projection module;

[0058] When the body domain controller obtains the locking information of the vehicle, the control module obtains the locking information of the vehicle from the body domain controller and processes the locking information to obtain a video stream representing the locking information (such as related animation effects such as "lock the car and go home"), and then projects the video stream representing the locking information back to the rear windshield of the vehicle through the projection module to enhance the user's sensory experience.

[0059] Optionally, the projection module of the projection system provided in the embodiment of the present application may include: a projector controller, responsible for receiving the image data transmitted by the control module, and performing inversion and reverse of the video display through a graphic image algorithm; a projector, such as Figure 4 As shown, the image is projected onto the rear windshield through the refraction of light and the magnification of the mirror.

[0060] Optionally, the data transmission method of the projection system provided in the embodiment of the present application may include: data is transmitted between each unit through the controller area network (CAN), for example, data is transmitted through the classic CAN or the controller area network with flexible data rate (CAN FD); video stream and other data are transmitted between the control unit and the projection module through low voltage differential signaling (LVDS), which helps to reduce video interference and improve image quality. As an example, after the control unit calculates the information related to the charging status, the final calculation result can be sent to the projector controller through CAN, and the generated related video stream data can be transmitted to the projector controller through LVDS, so that the projector controller can generate the final charging status information.

[0061] The following is a more detailed description of the embodiments of the present application in conjunction with specific examples. In the following example, the control module is DHU, the driving control module is ADCU, and the battery management module uses PCMU; it should be noted that this example is only to help those skilled in the art understand the embodiments of the present application, and is not intended to limit the embodiments of the present application to the specific numerical values ​​or specific scenarios illustrated. Those skilled in the art can obviously make various equivalent modifications or changes based on the examples given below, and such modifications or changes also fall within the scope of the embodiments of the present application.

[0062] like Figure 5 As shown, a projection system 50 for a vehicle includes: DHU 51, ADCU 52, PCMU 53, a rear windshield 54, a projector controller 55 and a projector 56; a layer of film is added to the rear windshield 54, that is, a color-changing film that allows a user to see the interior of the vehicle from the outside of the vehicle, but cannot be seen from the inside of the vehicle, and the film serves as a shading and projection carrier.

[0063] The design principle of the projection system is as follows: first, after DHU51 receives the information from ADCU52 and PCMU53, DHU51 converts it into data content to be displayed through internal logical operations; secondly, DHU51 sends the content to be displayed to the projector controller 55 through a video stream, and the projector controller 55 inverts and reverses the video display through its own graphic image algorithm; finally, the projector 56 projects the image onto the rear windshield 54 through the principles of light refraction and mirror magnification.

[0064] The functions of each system are as follows: DHU51 is the core controller for information display, responsible for HMI design, battery charging status, driving status information processing and related signal forwarding; ADCU52 is responsible for synchronously transmitting the AEB\PEB and other related functions of intelligent driving to DHU51; PCMU53 is responsible for collecting and forwarding vehicle gear, battery, driving and other related information, including power information processed by BMS; projector controller 55 is responsible for receiving image data transmitted from DHU51, and after reverse inverting the image, uses projector 56 to project the image on the rear windshield through the principle of light refraction and mirror magnification;

[0065] like Figure 6As shown, the workflow of the projection system is as follows: Step S601: PCMU controls battery-related information and sends the charging status information of PCMU to DHU; Step S602: After DHU calculates the information related to the battery charging status, it sends the final calculation result to the projector controller through CAN, and transmits the video stream data to the projector controller through LVDS; Step S603: After the projector controller reverses the image through image processing, it uses the projector to project the image on the rear windshield; Step S604: ADCU sends AEB\PEB and other related information to DHU; Step S605: After receiving the AEB\PEB and other related information, DHU combines text prompts, icon display and other comprehensive processing, and sends the final calculation result to the projector controller through CAN, and transmits the video stream data to the projector controller through LVDS; Step S606: After the projector controller reverses the image through image processing, it uses the projector to project the image on the rear windshield;

[0066] The projection system provided by the embodiment of the present application is described in detail above. Figure 7 As shown, the embodiment of the present application further provides a vehicle 70, and the vehicle 70 includes the projection system mentioned in any of the above embodiments. The vehicle 70 provided in the embodiment of the present application is described in detail below. The vehicle 70 includes a control module 71, a projection module 72, a rear windshield 73, and an interior rearview mirror 74. Among them, the control module 71 is used to control the interior rearview mirror 74 to present the rear road conditions of the vehicle in response to presenting the charging state of the vehicle and / or the driving state of the vehicle on the rear windshield 73.

[0067] If the projection module 72 makes it difficult for the rearview mirror 74 to present the road conditions behind the vehicle using the reflection principle, the control module 71 can be used to make the rearview mirror 74 still serve as a display device for presenting the road conditions behind the vehicle 70, thereby helping to avoid the loss of key driving information (such as rear road condition information) and enhancing the fault tolerance of the vehicle 70 system. In complex traffic environments, such as changing lanes, reversing or parking, the rear road conditions displayed by the rearview mirror 74 can help users make safer operating decisions, thereby improving driving safety.

[0068] It should be understood that in the embodiment of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean determining B only according to A, and B can also be determined according to A and / or other information.

[0069] It should be understood that the term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0070] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0071] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0072] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0073] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0074] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A projection system for a vehicle, characterized in that: include: A control module, used for acquiring the charging state of the vehicle and processing the charging state of the vehicle to obtain a video stream representing the charging state; A projection module, configured to project the video stream representing the charging status back onto a rear windshield of the vehicle; The rear windshield is provided with a projection film for presenting the charging status of the vehicle so that a user can view the charging status of the vehicle from outside the vehicle.

2. The projection system according to claim 1, wherein: The control module is used to obtain the charging information of the vehicle from the battery management module and determine the charging state of the vehicle according to the charging information. Among them, the charging information includes one or more of the following: charging current, charging voltage, charging time; the charging status of the vehicle is used to indicate one or more of the following: whether the vehicle is connected to the charging gun; the power information of the vehicle; the charging power of the vehicle; whether the vehicle is finished charging; the time required to fully charge the vehicle.

3. The projection system according to claim 2, wherein: The system further comprises: The control module is used to obtain the driving state of the vehicle from the driving control module, and process the driving state of the vehicle to obtain a video stream representing the driving state; The projection module is used to project the video stream representing the driving state back to the rear windshield of the vehicle; The rear windshield is used to present the driving status of the vehicle so that a user can view the driving status of the vehicle from outside the vehicle.

4. The projection system according to claim 3, wherein: The driving control module includes an autonomous driving domain controller of the vehicle, The autonomous driving domain controller is used to obtain the driving status of the vehicle from the automatic emergency braking system and the pedestrian emergency braking system of the vehicle.

5. The projection system according to claim 3, wherein: The battery management module and the driving control module include the three-electric control unit of the vehicle, The three-electric control unit of the vehicle is used to provide the control module with the charging status of the vehicle and the driving status of the vehicle.

6. The projection system according to claim 1, wherein: The system further comprises: The control module is used to obtain the speed information of the vehicle traveling behind the vehicle from the sensor module, and process the speed information of the vehicle traveling behind to obtain a video stream representing the speed information of the vehicle traveling behind; The projection module is used to project the video stream representing the speed information of the rear vehicle back onto the rear windshield of the vehicle; The rear windshield is used to present reminder information about the speed of the vehicle traveling behind.

7. The projection system according to claim 6, wherein: The reminder information presented on the rear windshield is used to remind the rear vehicle that the vehicle is speeding.

8. The projection system according to claim 1, wherein: The system further comprises: The control module is used to obtain the unlocking information and / or locking information of the vehicle from the vehicle body domain controller, and process the unlocking information and / or locking information to obtain a video stream representing the unlocking information and / or locking information; The projection module is used to project the video stream representing the unlocking information and / or locking information back to the rear windshield of the vehicle; The rear windshield is used to present unlocking information and / or locking information of the vehicle.

9. The projection system according to any one of claims 3 to 5, characterized in that: The driving state information of the vehicle is used to indicate braking information of the vehicle and / or driving steering information of the vehicle.

10. A vehicle, characterized in that: The vehicle comprises a projection system as claimed in any one of claims 1-9.

11. The vehicle according to claim 10, characterized in that The vehicle is provided with an interior rearview mirror, The control module is used to control the interior rearview mirror to present the road conditions behind the vehicle in response to presenting the charging status of the vehicle and / or the driving status of the vehicle on the rear windshield.

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