Control system of hidden door handle and automobile

Abstract

The control system comprises a vehicle power supply, a power supply management module, a control unit MCU (Microprogrammed Control Unit), a standby power supply and a door handle heating relay, and the output end of the standby power supply is connected to the power supply management module; the output end of the MCU is connected to a door handle heating relay, the heating relay is connected in series in a power supply loop of a heating module, and the heating module is used for heating the hidden door handle. According to the hidden door handle, the defect that the hidden door handle cannot be popped up due to power failure of the power supply is reduced by adding the standby power supply, meanwhile, the defect that the door handle with a hidden door handle code cannot be popped up is overcome as much as possible by adding an electric heating mode and / or a linkage vehicle window mode, and the use experience of the hidden door handle is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive concealed door handle control, and in particular to a reliable concealed door handle control system and an automobile. Background Technology

[0002] With the technological development of new energy vehicles, more and more vehicles on the market are using hidden door handles. The use of hidden door handles reduces the wind resistance of the whole vehicle and creates a better sense of style and technology. Therefore, more and more vehicles are using hidden door handles.

[0003] However, with the use of concealed door handles, various vehicle accidents have also emerged. The most frequent complaints and criticisms from customers are that concealed door handles cannot be opened from the outside after a collision due to power loss, and they also fail to pop out when frozen in winter. To address the safety issues of concealed door handles, existing technologies employ solutions such as automatically unlocking and popping out the concealed door handle after a collision, providing a basis for accident rescue. For example, patent application number 202110011536.3 describes a vehicle collision handling system and method that automatically controls the pop-out of the concealed door handle through collision signal detection, providing a basis for smoothly opening the door after an accident.

[0004] However, since the pop-out of concealed door handles relies on motor control, the power supply at the front end can quickly be cut off in the event of a collision, making it impossible to provide the power required for pop-out. This results in the concealed door handle failing to pop out, thus creating a safety hazard. The door handle control cannot meet the requirements for further ensuring safety. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a control system and automobile for a hidden door handle. By adding a backup power supply, the defect of the hidden door handle not being able to pop out due to power failure is reduced. At the same time, by adding electric heating and / or linking with the car window, the defect of the hidden door handle code not being able to pop out is solved as much as possible, thereby improving the user experience of the hidden door handle.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a control system for a concealed door handle, including a vehicle power supply, a power management module, and a control unit MCU. The output terminal of the vehicle power supply is connected to the power management module, the power management module converts the vehicle power supply into the required power supply voltage, and the output terminal of the power management module is connected to the control unit MCU to supply power to the control unit MCU.

[0007] The control system also includes a backup power supply and a door handle heating relay. The output of the backup power supply is connected to the power management module. The output of the control unit MCU is connected to the door handle heating relay. The heating relay is connected in series in the power circuit of the heating module. The heating module is used to heat the concealed door handle.

[0008] The control system also includes an ambient temperature sensor, which is used to detect the ambient temperature of the vehicle and whose output is connected to the control unit MCU.

[0009] The control unit MCU receives the door handle heating command issued by the user via the CAN communication module.

[0010] The control system also includes a door handle opening sensor switch, which is used to sense the user's operation signal and its output is connected to the control unit MCU; the output of the control unit MCU is connected to the door handle motor to drive the door handle motor to extend or retract; the door handle status detection module is used to detect the extension or retraction status of the door handle and its output is connected to the control unit MCU; the control unit MCU controls the working status of the door handle heating relay according to the signals from the door handle opening sensor switch and the door handle status detection module.

[0011] The control unit MCU obtains the vehicle's collision signal through the CAN communication bus, and controls the door handle motor to extend the hidden door handle after receiving the collision signal.

[0012] The output of the control unit MCU is connected to the door window motor. After receiving a collision signal, the control unit MCU drives the door handle motor to move and then drives the door window motor to move after a set delay time to control the door window to descend.

[0013] The user's command to heat the door handle is sent to the vehicle's TBOX via the vehicle networking APP, and the vehicle's TBOX sends the command to the control unit MCU via the CAN communication module.

[0014] An automobile, the automobile including a control system for the aforementioned concealed door handle.

[0015] The advantages of this invention are: by adding a backup power source, it reduces the defect of the hidden door handle not being able to pop out due to power failure; at the same time, by adding electric heating and / or linking it to the windows, it largely solves the defect of the hidden door handle code not being able to pop out, thus improving the user experience of the hidden door handle. It solves the problem of door handles not being able to open when the entire vehicle loses power after an accident, providing external rescue personnel with a way to quickly open the door, greatly shortening the opening time, improving rescue efficiency and probability, and maximizing rescue time. It also solves the embarrassing situation of door handles freezing and making the door impossible to open in winter, providing customers with the best driving and riding experience. Attached Figure Description

[0016] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0017] Figure 1 This is a block diagram illustrating the structural principle of the control system of this utility model. Detailed Implementation

[0018] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and the description of the preferred embodiments.

[0019] This solution addresses the issue of door handles being unable to open after a vehicle accident and subsequent power outage. It provides a quick way for rescue personnel to open the doors, significantly reducing opening time, improving rescue efficiency and success rate, and maximizing rescue time. It also solves the problem of door handles freezing and becoming unusable in winter, providing customers with the best driving experience. To achieve these functions, this solution includes a backup power supply and a heating system. Upon detecting a power outage during a collision, the control module activates the backup power supply to unlock the door. In winter, when the temperature drops below 0°C, the heating system can be activated via a mobile app or a switch on the door handle to heat and defrost the door handle.

[0020] like Figure 1 As shown, a control system for a concealed door handle includes a vehicle power supply, a power management module, and a control unit MCU. The output of the vehicle power supply is connected to the power management module, which converts the vehicle power supply into the required supply voltage. The output of the power management module is connected to the control unit MCU to supply power to the control unit MCU.

[0021] The control system also includes a backup power supply and a door handle heating relay. The output of the backup power supply is connected to the power management module. The output of the control unit MCU is connected to the door handle heating relay, which is connected in series in the power circuit of the heating module. The heating module is used to heat the concealed door handle.

[0022] The vehicle power supply is provided by the onboard battery, typically a 12V battery. The backup power is a newly added lithium battery specifically designed to power the concealed door handles, using an NSC0817 lithium battery. Both the vehicle power supply and the backup power supply work together to power the concealed door handles, ensuring stable power supply even in the event of a collision, allowing the concealed door handles to open. Both the vehicle power supply and the lithium battery output power through a power management module. Because the voltage provided by the lithium battery and the vehicle power supply is 12V or even 24V, while the concealed door handle control unit, drive motor, etc., require multiple voltages, including 3.3V and 5V, the power management module converts the power to the required voltages and supplies power to the various modules of the concealed door handle. The power management module uses an SE8533K20HF chip for power conversion and supply. The outputs of the power management module are connected to the control unit (MCU) and the CAN transceiver, respectively, to power both.

[0023] The control unit (MCU) is the core of the concealed door handle, driving the motor to control its pop-out and retraction. The MCU uses an FS32K144 chip. The MCU's output connects to the door handle relay, driving the relay's contacts to close and open. Since the relay is connected in series in the heating module's power supply circuit, the relay controls whether the heating module operates, thus enabling control over its activation. The heating module primarily addresses the issue of concealed door handles freezing and failing to pop out. Therefore, the heating module can be configured with heating wires or similar components built into the concealed door handle to heat it, melting the ice and resolving the issue of frozen handles failing to pop out in winter.

[0024] The MCU drives the door handle to extend or retract via the door handle motor. The MCU drives the door handle motor via a door handle motor driver chip, which uses the TB9102FNG to control the door handle motor.

[0025] In this embodiment, an ambient temperature sensor is provided to detect the ambient temperature of the vehicle. Its output is connected to the control unit MCU. Ambient temperature is a prerequisite for activating the door handle heating. If the ambient temperature is not very low, it means that the door handle will not freeze, so heating is not required. Therefore, the prerequisite for activating heating is to detect whether the ambient temperature is lower than the set temperature. Generally, the temperature is set to 0°C for comparison. Heating is allowed to start only when the temperature is lower than 0°C.

[0026] The heating function of the concealed door handle can be activated in two ways:

[0027] Method 1: The control unit MCU receives the door handle heating command from the user via the CAN communication module. After receiving the user's door handle heating command, it determines whether the temperature is below 0 degrees Celsius. If so, heating is started; otherwise, heating is not started.

[0028] User commands can be issued via a remote mobile app. The user's command to heat the door handle is sent to the vehicle's TBOX via the vehicle networking app. The vehicle's TBOX then sends the command to the control unit MCU via the CAN communication module, thereby achieving the purpose of remote control.

[0029] Method 2: A door handle opening sensor switch is installed. This switch senses the user's operation signal, and its output is connected to the control unit (MCU). The MCU's output is connected to the door handle motor to drive its extension or retraction. A door handle status detection module detects the extension or retraction status of the door handle, and its output is also connected to the MCU. The MCU controls the operation of the door handle heating relay based on the signals from the door handle opening sensor switch and the door handle status detection module. The door handle opening sensor switch can be a touch switch, electronic switch, etc. After the user touches the switch, the MCU receives the touch signal and drives the door handle motor through the door handle driver chip, thereby controlling the door handle to extend. The door handle status detection module detects whether the door handle has extended. If it has not extended and the temperature is below 0 degrees Celsius, heating is activated. This is to ensure that the door handle extends when the user needs to open the door; if it does not extend and the temperature is low, heating is activated. The door handle extension detection module can determine whether the door handle has extended using a contact switch, a status switch, or a Hall effect signal from the motor.

[0030] In this embodiment, the control unit (MCU) acquires the vehicle's collision signal via the CAN communication bus and, upon receiving the collision signal, controls the door handle motor to extend the concealed door handle. After a collision, the door handle extends, providing a basis for subsequent rescue efforts. The collision signal can be obtained by reading the vehicle's signals via the CAN bus. Because this application includes a backup power supply, the door handle can be extended using dual power supplies after receiving the collision signal.

[0031] Furthermore, while dual power supplies can significantly reduce the probability of door handles failing to pop out, collisions occurring at locations such as the car door may still result in the door handles not popping out. Therefore, to address the shortcomings of concealed door handles, this solution controls the door window to descend a few seconds after a collision, thus providing an opportunity for rescue or even allowing the door to be opened using the door switch. Specifically, the output of the control unit MCU is connected to the door window motor. Upon receiving a collision signal, the control unit MCU drives the door handle motor and, after a set delay, drives the door window motor to descend. The MCU uses the door window motor driver chip TB9102FNG to drive the door window motor, thereby controlling the raising or lowering of the door window.

[0032] In this embodiment, a car is also provided, which includes the control system for the hidden door handle in the above embodiment. Since the above control system is used, the vehicle equipped with the control system can also realize the functions of reliable pop-out and heating of the hidden door handle.

[0033] In this embodiment, the vehicle power supply and the backup lithium battery jointly provide 12V power. The internal power module converts the 12V power to the 3.3V and 5V voltages required by the chip, and simultaneously manages the charging and discharging of the backup lithium battery. Upon receiving the CAN signal while the vehicle is powered on after a collision, the control module directly unlocks the door and ejects the door handle. After the vehicle is powered off following the collision, the power management module opens the backup lithium battery discharge channel, supplying power to the door lock system separately, unlocking the door and ejecting the door handle. When the control module detects that the outside temperature is below 0°C, it receives door handle heating information from the CAN bus and closes the door handle heating relay, starting the heating process until the door handle can be ejected or the temperature reaches 10°C. Alternatively, pressing the door opening sensor switch will trigger the heating program if the control module detects that the outside temperature is below 0°C and the door handle has not yet ejected, continuing until the door handle can be ejected or the temperature reaches 10°C.

[0034] The concealed door handle control scheme in the market embodiment can be used to open the door lock using its own backup power when the vehicle is powered off; the door handle heating can be remotely activated to allow customers to open the door smoothly; and the heating system can be activated on the door handle switch.

[0035] Obviously, the specific implementation of this invention is not limited to the above-described methods. Any non-substantial improvements made using the inventive concept and technical solution of this invention are within the protection scope of this invention.

Claims

1. A control system for a concealed door handle, comprising a vehicle power supply, a power management module, and a control unit MCU, wherein the output terminal of the vehicle power supply is connected to the power management module, the power management module converts the vehicle power supply into the required supply voltage, and the output terminal of the power management module is connected to the control unit MCU to supply power to the control unit MCU; characterized in that: The control system also includes a backup power supply and a door handle heating relay. The output of the backup power supply is connected to the power management module. The output of the control unit MCU is connected to the door handle heating relay. The heating relay is connected in series in the power circuit of the heating module. The heating module is used to heat the concealed door handle.

2. The control system for a concealed door handle as described in claim 1, characterized in that: The control system also includes an ambient temperature sensor, which is used to detect the ambient temperature of the vehicle and whose output is connected to the control unit MCU.

3. The control system for a concealed door handle as described in claim 1 or 2, characterized in that: The control unit MCU receives the door handle heating command issued by the user via the CAN communication module.

4. The control system for a concealed door handle as described in claim 1 or 2, characterized in that: The control system also includes a door handle opening sensor switch, which is used to sense the user's operation signal and its output is connected to the control unit MCU; the output of the control unit MCU is connected to the door handle motor to drive the door handle motor to extend or retract; the door handle status detection module is used to detect the extension or retraction status of the door handle and its output is connected to the control unit MCU; the control unit MCU controls the working status of the door handle heating relay according to the signals from the door handle opening sensor switch and the door handle status detection module.

5. A control system for a concealed door handle as described in claim 1 or 2, characterized in that: The control unit MCU obtains the vehicle's collision signal through the CAN communication bus, and controls the door handle motor to extend the hidden door handle after receiving the collision signal.

6. The control system for a concealed door handle as described in claim 5, characterized in that: The output of the control unit MCU is connected to the door window motor. After receiving a collision signal, the control unit MCU drives the door handle motor to move and then drives the door window motor to move after a set delay time to control the door window to descend.

7. The control system for a concealed door handle as described in claim 3, characterized in that: The user's command to heat the door handle is sent to the vehicle's TBOX via the vehicle networking APP, and the vehicle's TBOX sends the command to the control unit MCU via the CAN communication module.

8. A car, characterized in that: The vehicle includes a control system for a concealed door handle as described in any one of claims 1-7.

Images