Projection systems for vehicles, vehicles containing projection systems

Abstract

This application provides a projection system for a vehicle and a vehicle including the projection system. The projection system for the vehicle includes: a control module for acquiring the vehicle's charging status and processing the charging status to obtain a video stream representing the charging status; a projection module for projecting the video stream representing the charging status onto the vehicle's rear windshield; and a projection film provided on the rear windshield for displaying the vehicle's charging status, allowing the user to view the vehicle's charging status from outside the vehicle. Since users no longer need to get out of the car, insert the charging gun into a charging station, run to the windshield, and press their faces against the windshield to check the charging status via the dashboard or other display devices, this improves the user experience for viewing the charging status.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobiles, and more particularly to a projection system for a vehicle and a vehicle comprising the projection system. BACKGROUND

[0002] A vehicle, also referred to as an electric vehicle (EV), can refer to a vehicle that uses electric energy as a power source or drives an electric motor to drive the vehicle to travel. At present, electric vehicles can be divided into the following types: battery electric vehicles (BEVs), plug-in hybrid electric vehicles (PHEVs), extended-range electric vehicles (EREVs), and fuel cell electric vehicles (FCEVs). Among them, a BEV can rely entirely on battery-stored electric energy to drive an electric motor to achieve power output of the vehicle without an internal combustion engine. A PHEV can use an internal combustion engine and an electric motor for driving, and the electric motor can be charged through an external power source. An EREV mainly relies on an electric motor for driving, and an internal combustion engine serves as a generator to charge the battery and does not directly drive the wheels. An FCEV can generate electric energy through a hydrogen fuel cell to drive an electric motor.

[0003] At present, when a vehicle is parked for charging, a user often needs to run to the front window part after plugging in a charging gun on a charging pile, and then crouches on the front window to determine the charging state of the vehicle through a display device such as an instrument panel. This way of checking the charging state of the vehicle is relatively complex, resulting in a low user experience. SUMMARY

[0004] Embodiments of the present application are dedicated to providing a projection system for a vehicle and a vehicle comprising the projection system to facilitate a user to check the charging state outside the vehicle, which will be introduced from the following two aspects.

[0005] In a first aspect, a projection system for a vehicle is provided, comprising: a control module configured to obtain a charging state of the vehicle and process the charging state of the vehicle to obtain a video stream representing the charging state; a projection module configured to reversely project the video stream representing the charging state to a rear windshield of the vehicle; and the rear windshield is provided with a projection film and configured to present the charging state of the vehicle, so that a user can check the charging state of the vehicle outside the vehicle.

[0006] As a possible implementation manner, the control module is configured to acquire charging information of the vehicle from the battery management module, and determine a charging state of the vehicle according to the charging information, wherein the charging information comprises one or more of the following: a charging current, a charging voltage, and a charging time; and the charging state of the vehicle is used to indicate one or more of the following: whether the vehicle is connected with a charging gun; power information of the vehicle; charging power of the vehicle; whether the vehicle is charged to the end; and a time required for the vehicle to be fully charged.

[0007] As a possible implementation manner, the projection system further comprises: a control module configured to acquire a 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; a projection module configured to reversely project the video stream representing the driving state to the rear windshield of the vehicle; and the rear windshield configured to present the driving state of the vehicle, so that a user outside the vehicle can view the driving state of the vehicle.

[0008] As a possible implementation manner, the driving control module comprises an automatic driving domain controller of the vehicle, configured to acquire the driving state of the vehicle from an automatic emergency braking system and a pedestrian emergency braking system of the vehicle.

[0009] As a possible implementation manner, the battery management module and the driving control module comprise a three-electricity control unit of the vehicle, configured to provide the control module with the charging state of the vehicle and the driving state of the vehicle.

[0010] As a possible implementation manner, the projection system further comprises: a control module configured to acquire vehicle speed information of a rear driving vehicle from the sensing module, and process the vehicle speed information of the rear driving vehicle to obtain a video stream representing the vehicle speed information of the rear driving vehicle; a projection module configured to reversely project the video stream representing the vehicle speed information of the rear driving vehicle to the rear windshield of the vehicle; and the rear windshield configured to present reminding information for the vehicle speed information of the rear driving vehicle.

[0011] As a possible implementation manner, the reminding information presented by the rear windshield is used to remind that the vehicle speed of the rear driving vehicle is overspeed.

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

[0013] a control module configured to acquire unlocking information and / or locking information of the vehicle from the body domain controller, and process the unlocking information and / or the locking information to obtain a video stream representing the unlocking information and / or the locking information;

[0014] a projection module configured to reversely project the video stream representing the unlocking information and / or the locking information to the rear windshield of the vehicle;

[0015] The rear windshield is used to display vehicle unlock and / or lock information. As one possible implementation, vehicle driving status information is used to indicate vehicle braking information and / or vehicle steering information.

[0016] In a second aspect, a vehicle is provided that includes a projection system as implemented in any of the first aspects.

[0017] As one possible implementation, the vehicle is equipped with an interior rearview mirror and a control module for controlling the interior rearview mirror to display the road conditions behind the vehicle in response to displaying the vehicle's charging status and / or driving status on the rear windshield.

[0018] In this embodiment, the projection system can project the vehicle's charging status onto the rear windshield. Thus, when a user inserts the charging gun into the vehicle, they can directly view the vehicle's charging status on the rear windshield. Compared to traditional solutions where users need to view the vehicle's charging status through the dashboard, this significantly improves the user experience. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the vehicle structure to which the embodiments of this application apply.

[0020] Figure 2 This is a schematic diagram showing the vehicle charging status provided by related technologies.

[0021] Figure 3 This is a schematic diagram of the projection system provided in the embodiments of this application.

[0022] Figure 4 yes Figure 3 A diagram illustrating the working principle of the projector in the aforementioned projection system.

[0023] Figure 5 This is a structural example diagram of the projection system provided in the embodiments of this application.

[0024] Figure 6 This is a schematic flowchart illustrating the operation of the projection system provided in the embodiments of this application.

[0025] Figure 7 This is a schematic diagram of the vehicle structure provided in the embodiments of this application. Detailed Implementation

[0026] This application embodiment can be applied to scenarios where vehicle charging status information is provided to external users. For ease of understanding, the vehicle structure mentioned in this application embodiment will be described in detail below.

[0027] like Figure 1As shown, in vehicle 10, the powertrain control module unit (PCMU) 11 and the digital cockpit head unit (DHU) 12 are two important components. They are each responsible for different functional areas and together contribute to the safety, performance and user experience of vehicle 10.

[0028] PCMU11 is primarily responsible for coordinating and managing the interaction between the vehicle's motor system, battery management system (BMS), and vehicle control unit (VCU). It collects and forwards information related to vehicle gear position, battery status, and driving conditions, including battery level information processed by the BMS. DHU12 is the core control unit for vehicle information display. It is responsible for integrating and controlling the vehicle's driving information display and entertainment information system, processing and forwarding information such as the design of the human-machine interface (HMI), battery charging status, and driving status, and generating and forwarding relevant video streams.

[0029] As the autonomous driving functions of vehicles 10 become more mature, more and more vehicles 10 are equipped with Automated Driving Control Units (ADCUs) 13, which integrate the three parts of autonomous driving: automatic perception, decision-making, and control. The ADCU 13 receives data collected by multiple sensors (such as cameras, millimeter-wave radar, lidar, etc.), acquires dynamic data of the vehicle 10 (vehicle speed, pedal signals, etc.) through the VCU, and can monitor the movement trajectory of the vehicle 10 in real time and plan the path.

[0030] In vehicle 10, ADCU13 is primarily responsible for coordinating or managing the Automatic Emergency Braking (AEB) system and the Pedestrian Emergency Braking (PEB) system. AEB mainly uses cameras and radar to monitor vehicles and other obstacles ahead, and assesses collision risk based on factors such as vehicle speed and distance. If the driver fails to react in time, AEB can autonomously initiate braking to avoid a collision or mitigate its severity. PEB, on the other hand, utilizes a more complex combination of sensors (such as cameras, radar, and infrared cameras) to identify and predict pedestrian movement trajectories, and assesses collision risk based on factors such as vehicle speed and distance. If the driver fails to react in time, PEB can autonomously initiate braking to avoid a collision or mitigate the severity of a collision with a pedestrian.

[0031] When vehicle 10 is in motion, the aforementioned autonomous driving function can help improve its own driving safety. Often, when vehicle 10 is in motion, it is a situation where multiple vehicle systems coexist. To address the issue of relatively little interaction between vehicles, the relevant technology can communicate with other vehicles by changing the flashing pattern and frequency of vehicle 10's taillights.

[0032] When vehicle 10 is parked and charging, such as Figure 1 As shown, after a user gets out of the car and inserts the charging gun into the charging station 14, they often need to run to the front windshield 15, lean over it, and use the dashboard or other display devices to determine if charging has started. This addresses the situation where, when the vehicle 10 is parked and charging, the user cannot check the charging status from outside the vehicle, such as... Figure 2 As shown, after the user gets out of the vehicle 10 and inserts the charging gun into the charging station 14, the relevant technology uses the B-pillar 16 to display the charging status 17. However, since the B-pillar 16 has a small area and the displayed screen is smaller, the user may still need to go to the vicinity of the driver's seat to check the charging status 17 through the B-pillar 16. Therefore, it is inconvenient for the user to check the charging status 17 from outside the vehicle.

[0033] To address the issue of users finding it inconvenient to view the charging status from outside the vehicle, this application projects the vehicle's charging status onto the rear windshield, allowing users to view the charging status from outside the vehicle. Since the rear windshield is larger than the B-pillar 16, the displayed image area is larger, improving the user experience for viewing the charging status. For example, larger fonts can be displayed on the rear windshield, allowing users to view the information from a certain distance. Furthermore, richer content can be provided on the rear windshield, allowing users to view more detailed charging status information from outside the vehicle.

[0034] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0035] like Figure 3 As shown, this application embodiment provides a projection system 30 for a vehicle, including: a control module 31, used to acquire 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 project the video stream representing the charging status onto the rear windshield 33 of the vehicle; the rear windshield 33 is provided with a projection film for displaying the charging status of the vehicle so that the user can view the charging status of the vehicle from the outside of the vehicle.

[0036] Optionally, the optical properties of the projection film allow it to effectively block light when viewed from the inside, while remaining transparent when viewed from the outside, thus 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 configured to obtain vehicle charging information from the battery management module and determine the vehicle 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 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 for the vehicle to be fully charged.

[0038] By viewing the charging status information, users outside the vehicle can improve safety and avoid accidental operation and potential safety risks. For example, when the charging status indicates whether the vehicle is connected to the charging gun, it helps prevent others from accidentally unplugging the charging gun and alerts external users that the vehicle is charging, thus reducing unnecessary approach or interference. Another example is when the charging status indicates the vehicle's battery level, allowing external users to quickly understand the vehicle's battery status and choose a suitable vehicle in car-sharing or rental services, thus improving convenience. When the charging status indicates whether the vehicle has finished charging, it can promptly notify users that charging is complete, thus helping to improve parking space turnover, avoid prolonged occupation of charging spots, promote resource sharing when multiple vehicles are queuing for charging, and help the dispatch system allocate resources more efficiently, enabling each user to complete charging as quickly as possible. When the charging status indicates the time required for a full charge, it can help other users waiting at the charging station to rationally allocate their time, improving 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, this helps users monitor the battery temperature during the charging process and reminds users to avoid damage to the battery from extreme temperatures. The vehicle's charging status can also be used to indicate charging faults or abnormalities, report detected charging problems such as overvoltage, undervoltage, overtemperature, communication errors, etc., and may provide corresponding solutions.

[0040] This application does not limit the charging status of the vehicle. The charging status of the vehicle can be used to indicate the State of Health (SOH): SOH is a relative indicator of the current health status of the battery, usually expressed as a percentage (100% indicates the state of a new battery). SOH will gradually decrease as the battery is used and ages. The charging status of the vehicle can also be used to indicate charging equipment information: if non-original charging equipment or charging piles are used, the dashboard may display information such as the manufacturer and model of the equipment.

[0041] As an example, based on the projection system for vehicles provided in this application embodiment, when a user gets out of the car to charge, or when the charging gun is connected to the charging pile, the battery management module synchronously sends charging status related signals to the control module 31. The control module 31 calculates and integrates the charging status related signals and transmits them 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 conveniently obtain the charging status information.

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

[0043] The above describes the functions of the projection system provided in this application embodiment when the vehicle is parked and charging. While the vehicle is in motion, the projection system provided in this application embodiment can also be used to display the vehicle's driving status, which can be achieved in the following ways:

[0044] As mentioned earlier, autonomous driving functions can help improve driving safety when a vehicle is in motion. However, the driving conditions are often a situation where multiple vehicle systems coexist. To address the issue of relatively little interaction between vehicles, related technologies can communicate with other vehicles by changing the way and frequency of the vehicle's taillights flash. However, the interaction function through the flashing of vehicle taillights and its optimization may be limited by the safety of the headlights and cannot be expanded.

[0045] To address the aforementioned issues, the projection system provided in this application embodiment may further include: a control module, used to acquire the vehicle's driving state from the driving control module and process the vehicle's driving state to obtain a video stream representing the driving state; a projection module, used to project the video stream representing the driving state onto the vehicle's rear windshield; and the rear windshield, used to display the vehicle's driving state so that users can view the vehicle's driving state from outside the vehicle. Compared to related technologies that use the flashing pattern and frequency of vehicle taillights to interact with other vehicles, displaying the content for information interaction through the rear windshield, due to its larger area, allows for the display of richer content, helping to ensure that the interactive functions and their optimization are no longer limited by the safety of the vehicle lights.

[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 this application embodiment, the control module performs functional logic judgments related to driving status scenarios. If it is determined that the user is turning or braking during driving, the necessary driving status information such as "vehicle braking" / "left turn" / "right turn" is transmitted to the projection module in the form of "text plus animation". The projection module projects the driving status information in the form of "text plus animation" onto the rear window to remind users of other vehicles. For example, when the vehicle is driving at low speed and brakes, the system promptly reminds the user of the following vehicle "vehicle braking" through the rear windshield, providing a clear interactive reminder to the user following behind, which helps to avoid minor collisions between vehicles and thus affecting driving safety. Or, when the vehicle is driving at high speed and needs to change lanes, the system not only reminds the user of the following vehicle through the turn signal, but also promptly reminds the user of the following vehicle "left turn" / "right turn" through the rear windshield, which helps to avoid rear-end collisions and other traffic accidents when the following vehicle is close to the vehicle and the vehicle in front slows down slightly while turning.

[0048] In other embodiments, the vehicle's driving status information can also be used to indicate acceleration / deceleration status, that is, to alert external vehicle users that the vehicle is accelerating or decelerating, especially in the event of sudden deceleration on a highway, so that drivers 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 is detected (such as a tire blowout or system failure), a clear warning sign is displayed on the rear windshield so that other road users can avoid it in time.

[0049] As an example, the driving control module includes the vehicle's autonomous driving domain controller, which obtains the vehicle's driving status from the AEB / PEB (Autonomous Emergency Braking / Peer-to-Peer Braking) system. The driving status obtained by the autonomous driving domain controller from AEB / PEB includes predictive information about the vehicle's own driving behavior. For instance, when AEB / PEB predicts that the vehicle is about to brake suddenly, it provides this information to the control module. This allows the control module to process the vehicle's driving status in advance and obtain a video stream representing the driving status. The processing results and video stream information are then transmitted to the projection module, helping to alert external users to the impending braking and thus improving safety. While AEB / PEB and similar functions can assist users in driving planning, when avoiding traffic risks, they can only assist with emergency braking or early deceleration of the vehicle itself and may not be able to avoid the risk of collisions or rear-end collisions caused by 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. Before the vehicle itself has made this driving action, it displays this driving status through the rear windshield to remind external users of the vehicle. This helps other vehicle users to obtain the driving behavior of the vehicle in advance, increases the prediction time for other vehicles to avoid collisions with the vehicle itself, and improves the overall safety of the vehicle on the road.

[0050] As another example, the driving control module can also include the vehicle's PCMU (Power Control Unit) to provide the control module with the vehicle's driving status. Since the PCMU can provide the control module with both the vehicle's charging status and driving status, it simplifies the complexity of information acquisition. The PCMU facilitates unified management of the motor, battery, and the entire vehicle, improving the integration of the vehicle system and making coordination between subsystems smoother. The PCMU can also share sensors and other hardware resources, helping to reduce redundant design and thus lower costs.

[0051] During vehicle operation, the projection system provided in this application embodiment can also be used to display reminder information regarding the speed of vehicles traveling behind. Optionally, the vehicle projection system may further include: a control module, used to acquire the speed information of vehicles traveling behind the vehicle from a sensing module, and process the speed information of the vehicles traveling behind to obtain a video stream representing the speed information of the vehicles traveling behind; a projection module, used to project the video stream representing the speed information of the vehicles traveling behind onto the rear windshield of the vehicle; and the rear windshield, used to display reminder information regarding the speed information of the vehicles traveling behind. For example, the reminder information displayed on the rear windshield is used to remind vehicles traveling behind of speeding. When a vehicle traveling behind is detected to be speeding, the system can immediately display the corresponding warning information on the rear windshield, allowing the driver behind to quickly realize the potential danger and take appropriate measures (such as slowing down appropriately, maintaining a greater distance, etc.), thereby reducing the risk of rear-end collisions.

[0052] The aforementioned sensing module can be implemented using various types of sensors and sensing technologies. The selection of sensors and sensing technologies may depend on factors such as the system's accuracy requirements, cost considerations, ease of installation, and environmental adaptability.

[0053] In some embodiments, the sensing module may include a radar sensor, such as millimeter-wave radar, capable of accurately measuring relative speed and distance. It offers high resolution and interference resistance, contributing to stable operation in harsh weather conditions. Alternatively, a lidar sensor may be used, which calculates the target's distance and speed by emitting a laser beam and receiving the reflected signal.

[0054] In other embodiments, the sensing module includes a camera and computer vision, such as a monocular or binocular camera, combined with image processing algorithms, to extract vehicle speed information from a video stream. A binocular camera can also provide stereo vision, which helps to increase ranging accuracy.

[0055] During the vehicle unlocking and / or locking process, the projection system provided in this application embodiment can also be used to present information representing vehicle unlocking and / or locking. Optionally, the vehicle projection system may further include: a control module, used to obtain vehicle unlocking and / or locking information from the vehicle domain controller, and process the unlocking and / or locking information to obtain a video stream representing the unlocking and / or locking information; a projection module, used to project the video stream representing the unlocking and / or locking information back onto the vehicle's rear windshield; and the rear windshield, used to display the vehicle unlocking and / or locking information.

[0056] For example, when a user unlocks / locks the vehicle via a mobile application (APP), Near Field Communication (NFC) function, or Frequency-Operated Button (FOB), the vehicle domain controller obtains the vehicle's unlocking and / or locking information.

[0057] When the vehicle domain controller obtains the vehicle's unlocking information, the control module obtains the unlocking information from the vehicle domain controller, processes the unlocking information to obtain a video stream representing the unlocking information (such as "welcome" and related animation effects), and then projects the video stream representing the unlocking information onto the vehicle's rear windshield through the projection module.

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

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

[0060] Optionally, the data transmission method of the projection system provided in this application embodiment may include: data transmission between various units via a Controller Area Network (CAN), such as data transmission via classic CAN or a Controller Area Network with Flexible Data-rate (CAN FD); video stream and other data transmission between the control unit and the projection module via Low Voltage Differential Signaling (LVDS), which helps reduce video interference and improve image quality. As an example, after the control unit calculates the charging status-related information, it can send the final calculation result to the projector controller via CAN, and simultaneously transmit the generated relevant video stream data to the projector controller via LVDS, so that the projector controller can generate the final charging status information.

[0061] The embodiments of this application are described in more detail below with specific examples. In the examples below, the control module is a DHU, the driving control module is an ADCU, and the battery management module is a PCMU. It should be noted that these examples are only to help those skilled in the art understand the embodiments of this application, and are not intended to limit the embodiments of this application to the specific values ​​or 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 this application.

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

[0063] The design principle of the projection system is as follows: First, after receiving the information from ADCU52 and PCMU53, DHU51 transforms the information into the data content to be displayed through internal logic operations; second, DHU51 sends the content to be displayed to the projector controller 55 via a video stream, and the projector controller 55 uses its own graphics and image algorithms to invert and reverse the video display; 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 the design of HMI, processing of battery charging status and driving status information, and forwarding of related signals; ADCU52 is responsible for synchronously transmitting intelligent driving functions such as AEB and PEB to DHU51; PCMU53 is responsible for collecting and forwarding information related to vehicle gear position, battery, driving, etc., including information such as battery level after BMS processing; Projector controller 55 is responsible for receiving image data transmitted from DHU51, and after inverting the image, it uses projector 56 to project the image onto the rear windshield through the principle of light refraction and mirror magnification.

[0065] like Figure 6As shown, the projection system workflow is as follows: Step S601: The PCMU controls battery-related information and sends the PCMU's charging status information to the DHU; Step S602: After the DHU calculates the battery charging status information, it sends the final calculation result to the projector controller via CAN, and simultaneously transmits the video stream data to the projector controller via LVDS; Step S603: The projector controller inverts the image through image processing and projects the image onto the rear windshield using the projector; Step S604: The ADCU sends AEB, PEB, and other related information to the DHU; Step S605: After receiving the AEB, PEB, and other related information, the DHU combines text prompts, icon displays, and other comprehensive processing, and sends the final calculation result to the projector controller via CAN, while simultaneously transmitting the video stream data to the projector controller via LVDS; Step S606: After the projector controller inverts the image through image processing, it projects the image onto the rear windshield using the projector.

[0066] The projection system provided in the embodiments of this application has been described in detail above, such as... Figure 7 As shown in the illustration, this application also provides a vehicle 70, which includes the projection system mentioned in any of the preceding embodiments. The vehicle 70 provided in this application embodiment 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. The control module 71 is used to control the interior rearview mirror 74 to display the road conditions behind the vehicle in response to displaying the vehicle's charging status and / or driving status on the rear windshield 73.

[0067] If the presence of the projection module 72 makes it inconvenient for the rearview mirror 74 to display the road conditions behind the vehicle using the principle of reflection, the control module 71 can ensure that the rearview mirror 74 still functions as a display device for the road conditions behind the vehicle 70. This helps to prevent the loss of critical driving information (such as rear road condition information) and enhances the fault tolerance of the vehicle 70 system. In complex traffic environments, such as when changing lanes, reversing, or parking, the rear road conditions displayed by the rearview mirror 74 can help the user make safer driving decisions, thereby improving driving safety.

[0068] It should be understood that in the embodiments of this application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.

[0069] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0070] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply 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 this application.

[0071] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

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

[0073] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0074] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A projection system for a vehicle, characterized by, The system comprises: a control module configured to acquire a charging state of the vehicle and process the charging state of the vehicle to obtain a video stream representing the charging state; a projection module configured to reversely project the video stream representing the charging state to a rear windshield of the vehicle; the rear windshield is provided with a projection film and is configured to present the charging state of the vehicle so that a user outside the vehicle can view the charging state of the vehicle; wherein the system further comprises: the control module is configured to acquire vehicle speed information of a rear driving vehicle from a sensing module and process the vehicle speed information of the rear driving vehicle to obtain a video stream representing the vehicle speed information of the rear driving vehicle; the projection module is configured to reversely project the video stream representing the vehicle speed information of the rear driving vehicle to the rear windshield of the vehicle; the rear windshield is configured to present reminder information for the vehicle speed information of the rear driving vehicle.

2. The projection system of claim 1, wherein, the control module is configured to acquire charging information of the vehicle from a battery management module and determine the charging state of the vehicle according to the charging information, wherein the charging information comprises one or more of the following: charging current, charging voltage, charging time; and the charging state of the vehicle is used to indicate one or more of the following: whether the vehicle is connected to a charging gun; power information of the vehicle; charging power of the vehicle; whether the vehicle is charged to completion; and time required for the vehicle to be fully charged.

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

4. The projection system of claim 3, wherein, the driving control module comprises an automatic driving domain controller of the vehicle, the automatic driving domain controller is configured to acquire the driving state of the vehicle from an automatic emergency braking system and a pedestrian emergency braking system of the vehicle.

5. The projection system of claim 3, wherein, the battery management module and the driving control module comprise a three-electricity control unit of the vehicle, the three-electricity control unit of the vehicle is configured to provide the control module with the charging state of the vehicle and the driving state of the vehicle.

6. The projection system of claim 1, wherein, The reminder information presented by the rear windshield is used to remind the vehicle speed of the rear driving vehicle to be overspeed.

7. The projection system of claim 1, wherein, The system further comprises: the control module is configured to acquire unlocking information and / or locking information of the vehicle from a 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 configured to reversely project the video stream representing the unlocking information and / or locking information to the rear windshield of the vehicle; the rear windshield is configured to present the unlocking information and / or locking information of the vehicle.

8. The projection system of any of claims 3-5, wherein, The driving state information of the vehicle is used to indicate braking information of the vehicle and / or driving steering information of the vehicle.

9. A vehicle characterized by comprising: The vehicle comprises the projection system according to any one of claims 1-8.

10. The vehicle of claim 9, wherein, The vehicle is provided with an interior rearview mirror, The control module is configured to control the interior rearview mirror to present a road condition behind the vehicle in response to presenting the charging state of the vehicle and / or the driving state of the vehicle on the rear windshield.

Images