Touch vehicle door switch, touch vehicle door and vehicle

Abstract

The utility model discloses a touch vehicle door switch, a touch vehicle door and a vehicle, and relates to the field of vehicle door control, the input end of a charging management chip is connected with a vehicle-mounted power supply, the output end of the charging management chip is connected with the input end of a standby power supply, and the charging management chip is used for charging the standby power supply; the output end of the standby power supply is connected with the power supply end of the controller for supplying power to the controller; the door handle sensing device is used for sensing the distance between the door handle sensing device and a user and generating a door opening signal to the controller. The output end of the controller is connected with the control end of a motor of the vehicle door so as to control the motor to rotate based on the door opening signal. The motor is used for driving the vehicle door to open or close during rotation. And when the vehicle runs normally, the vehicle-mounted power supply charges the standby power supply. Meanwhile, a standby power supply and a vehicle-mounted power supply are adopted to supply power to the controller, when the vehicle-mounted power supply breaks down and cannot supply power when a vehicle accident occurs, the standby power supply supplies power, and the problem that a vehicle door cannot be opened is avoided.

Description

Technical Field

[0001] This utility model relates to the field of vehicle door control, and in particular to a touch-sensitive vehicle door switch, a touch-sensitive vehicle door, and a vehicle. Background Technology

[0002] With the development of automotive technology, more and more car door handle switches are adopting capacitive touch technology. Touch-type door switches are mostly powered by the vehicle's battery. In the event of an accident, if the switch is disconnected from the battery, it will lose power and become unusable, preventing the door from being opened normally from the outside and thus threatening the lives of the occupants. Utility Model Content

[0003] The purpose of this utility model is to provide a touch-sensitive door switch, a touch-sensitive door and vehicle, so that when the vehicle's onboard power fails and cannot provide power in the event of an accident, a backup power source can provide power, thus avoiding the problem of the door being unable to be opened.

[0004] To solve the above-mentioned technical problems, this utility model provides a touch-sensitive car door switch, comprising:

[0005] A charging management chip, wherein the input terminal of the charging management chip is connected to the vehicle power supply and the output terminal of the charging management chip is connected to the input terminal of the backup power supply, for charging the backup power supply;

[0006] The backup power supply has its output terminal connected to the power supply terminal of the controller, and is used to supply power to the controller.

[0007] A door handle sensor, wherein the door handle sensor is used to sense the distance to the user and generate an opening signal to the controller;

[0008] The controller's output is connected to the control terminal of the door motor so as to control the motor rotation based on the door opening signal;

[0009] The motor is used to open or close the car door when it rotates.

[0010] On the other hand, it also includes a first diode;

[0011] The anode of the first diode is connected to the vehicle power supply, and the cathode of the first diode is connected to the power supply terminal of the controller for reverse protection.

[0012] On the other hand, it also includes a step-down module;

[0013] The input terminal of the step-down module is connected to the output terminals of the vehicle power supply and the backup power supply, respectively. The output terminal of the step-down module is connected to the power supply terminal of the controller, and is used to step down the voltage output by the vehicle power supply or the backup power supply to power the controller.

[0014] On the other hand, the backup power source is a supercapacitor;

[0015] The first terminal of the supercapacitor is connected to the output terminal of the charging management chip and the power supply terminal of the controller, respectively, and the second terminal of the supercapacitor is grounded.

[0016] The supercapacitor is used to store electrical energy when the vehicle power supply is normal.

[0017] On the other hand, the door handle sensing device includes a touch chip and door handle electrodes;

[0018] The communication terminal of the door handle electrode is connected to the communication terminal of the touch chip, and the anti-interference terminal of the door handle electrode is connected to the anti-interference terminal of the touch chip.

[0019] The door handle electrode is used to detect the distance between the user and the user, so that the touch chip can generate an opening signal based on the distance.

[0020] On the other hand, it also includes a first controllable switch, a second controllable switch, a third controllable switch and a fourth controllable switch;

[0021] The first terminal of the first controllable switch and the first terminal of the second controllable switch are both connected to the power supply terminal of the controller. The second terminal of the first controllable switch is connected to the first terminal of the motor and the first terminal of the third controllable switch. The second terminal of the second controllable switch is connected to the second terminal of the motor and the first terminal of the fourth controllable switch. The second terminals of the third controllable switch and the fourth controllable switch are both grounded. The control terminals of the first controllable switch, the second controllable switch, the third controllable switch, and the fourth controllable switch are all connected to the motor control terminal of the controller.

[0022] The first controllable switch and the fourth controllable switch are used to be turned on simultaneously, and the second controllable switch and the third controllable switch are used to be turned on simultaneously.

[0023] On the other hand, it also includes a clamping module;

[0024] The first end of the clamping module is connected to the vehicle power supply, the second end of the clamping module is connected to the output end of the backup power supply, and the output end of the clamping module is connected to the power supply end of the controller.

[0025] The clamping module is used to connect its first terminal to its third terminal when the vehicle power supply is normal, and to connect its second terminal to its third terminal when the vehicle power supply is abnormal.

[0026] On the other hand, the clamping module includes a boost module and a second diode;

[0027] The input terminal of the boost module is connected to the output terminal of the backup power supply, the output terminal of the boost module is connected to the anode of the second diode, and the cathode of the second diode is connected to the power supply terminal of the controller.

[0028] The boost module is used to boost the voltage output by the backup power supply to power the controller, and the second diode is used to cut off when the vehicle power supply is normal.

[0029] To solve the above-mentioned technical problems, this utility model also provides a touch car door, including the touch car door switch mentioned above.

[0030] To solve the above-mentioned technical problems, this utility model also provides a vehicle, including the aforementioned touch door.

[0031] This application provides a touch-sensitive door switch, a touch-sensitive door, and a vehicle, relating to the field of door control. It includes: an input terminal of a charging management chip connected to an onboard power supply; an output terminal of the charging management chip connected to the input terminal of a backup power supply for charging the backup power supply; an output terminal of the backup power supply connected to the power supply terminal of a controller for powering the controller; a door handle sensor for sensing the distance to the user and generating an opening signal to the controller; and an output terminal of the controller connected to the control terminal of the door motor for controlling the motor's rotation based on the opening signal. The motor, when rotating, drives the door to open or close. During normal vehicle operation, the onboard power supply charges the backup power supply. Simultaneously, both the backup power supply and the onboard power supply power the controller. In the event of a vehicle accident and a failure of the onboard power supply, the backup power supply provides power, preventing the door from being unable to open. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the prior art and embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 A schematic diagram of the structure of a touch-sensitive car door switch provided by this utility model;

[0034] Figure 2 This is a schematic diagram of another touch-sensitive car door switch provided by this utility model. Detailed Implementation

[0035] The core of this utility model is to provide a touch-sensitive door switch, a touch-sensitive door and vehicle, so that when the vehicle's onboard power fails and cannot provide power in the event of an accident, a backup power supply is provided to prevent the door from being unable to open.

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] Figure 1 This is a schematic diagram of a touch-sensitive car door switch provided by the present invention. The touch-sensitive car door switch includes:

[0038] Charging management chip 1 has its input terminal connected to the vehicle power supply and its output terminal connected to the input terminal of backup power supply 2, for charging backup power supply 2.

[0039] Backup power supply 2, the output terminal of backup power supply 2 is connected to the power supply terminal of controller 4, and is used to supply power to controller 4;

[0040] Door handle sensor 3 is used to sense the distance to the user and generate an opening signal to the controller 4;

[0041] Controller 4, the output of controller 4 is connected to the control terminal of motor 5 of the door so as to control the rotation of motor 5 based on the door opening signal;

[0042] Motor 5 is used to open or close the car door when it rotates.

[0043] The vehicle power supply is a KL30, typically 9V-16V. The charging management chip 1 is connected to the controller 4. The controller 4 controls the charging management chip 1 to charge the backup power supply 2 via the I2C bus, ensuring that the backup power supply 2 is always fully charged.

[0044] When a person touches the door handle, the door handle sensor 3 detects a change in capacitance and sends the change to the controller 4 via the I2C bus. The controller 4 determines that the capacitance exceeds a set threshold and then outputs a signal to control the motor 5 to open the door. The method by which the door handle sensor 3 opens the car door is existing technology and is not addressed in this application.

[0045] The power supply terminal of controller 4 is connected to the vehicle power supply and the backup power supply 2 respectively. Both the vehicle power supply and the backup power supply 2 can supply power to controller 4. When the vehicle is involved in an accident, the vehicle power supply cannot supply power to controller 4. At this time, the backup power supply 2 supplies power to controller 4, and controller 4 and the vehicle door will not lose their power supply function.

[0046] This application provides a touch-sensitive car door switch, relating to the field of car door control, comprising: an input terminal of a charging management chip 1 connected to an on-board power supply, and an output terminal of the charging management chip 1 connected to the input terminal of a backup power supply 2 for charging the backup power supply 2; an output terminal of the backup power supply 2 connected to the power supply terminal of a controller 4 for powering the controller 4; a door handle sensor 3 for sensing the distance to the user and generating an opening signal to the controller 4; and an output terminal of the controller 4 connected to the control terminal of a door motor 5 for controlling the rotation of the motor 5 based on the opening signal; the motor 5 is used to open or close the car door when rotating. During normal vehicle operation, the on-board power supply charges the backup power supply 2. Both the backup power supply 2 and the on-board power supply simultaneously power the controller 4. In the event of a vehicle accident and failure of the on-board power supply, the backup power supply 2 provides power, preventing the door from being unable to open.

[0047] Based on the above embodiments:

[0048] Figure 2 This is a schematic diagram of another touch-sensitive door switch provided by this utility model;

[0049] In some embodiments, a first diode D1 is also included;

[0050] The anode of the first diode D1 is connected to the vehicle power supply, and the cathode of the first diode D1 is connected to the power supply terminal of the controller 4 for reverse protection.

[0051] To prevent power backflow, a first diode D1 is installed between the controller 4 and the vehicle power supply.

[0052] In some embodiments, a step-down module 6 is also included;

[0053] The input terminal of the step-down module 6 is connected to the output terminal of the vehicle power supply and the backup power supply 2 respectively, and the output terminal of the step-down module 6 is connected to the power supply terminal of the controller 4. It is used to step down the voltage output by the vehicle power supply or the backup power supply 2 to supply power to the controller 4.

[0054] Since vehicle power supplies are typically 9V-16V, while controller 4 requires a 5V supply voltage, a step-down module 6 is installed to step down the voltage output from the vehicle power supply or backup power supply 2. After the step-down module 6 reduces the voltage to 5V, it supplies power to controller 4.

[0055] In some embodiments, the backup power supply 2 is a supercapacitor C6;

[0056] The first terminal of the supercapacitor C6 is connected to the output terminal of the charging management chip 1 and the power supply terminal of the controller 4, respectively, and the second terminal of the supercapacitor C6 is grounded.

[0057] The supercapacitor C6 is used to store electrical energy when the vehicle power supply is normal.

[0058] Supercapacitors, also known as electrochemical capacitors, gold capacitors, or farad capacitors, are a new type of energy storage device that falls between traditional capacitors and rechargeable batteries. They possess both the rapid charging and discharging characteristics of capacitors and the energy storage characteristics of batteries. Supercapacitors are electrochemical components; no chemical reaction occurs during their energy storage process, which is reversible. They offer advantages such as rapid charging and discharging, long cycle life, high power, and high safety.

[0059] Therefore, using supercapacitor C6 as backup power source 2 allows for better energy storage.

[0060] In some embodiments, the door handle sensing device 3 includes a touch chip 31 and a door handle electrode 32;

[0061] The communication terminal of the door handle electrode 32 is connected to the communication terminal of the touch chip 31, and the anti-interference terminal of the door handle electrode 32 is connected to the anti-interference terminal of the touch chip 31.

[0062] The door handle electrode 32 is used to detect the distance between the user and itself, so that the touch chip 31 can generate an opening signal based on the distance.

[0063] When a person touches the door handle electrode 32, the touch chip 31 detects the change in capacitance and sends the change to the controller 4 via the I2C bus. The touch chip 31 and the door handle electrode 32 are connected through three interfaces: SHIELD, TXD, and RXD. The SHIELD interface is used for anti-interference, while the TXD and RXD interfaces are used for communication.

[0064] In some embodiments, the system further includes a first controllable switch Q1, a second controllable switch Q2, a third controllable switch Q3, and a fourth controllable switch Q4;

[0065] The first terminal of the first controllable switch Q1 and the first terminal of the second controllable switch Q2 are both connected to the power supply terminal of the controller 4. The second terminal of the first controllable switch Q1 is connected to the first terminal of the motor 5 and the first terminal of the third controllable switch Q3, respectively. The second terminal of the second controllable switch Q2 is connected to the second terminal of the motor 5 and the first terminal of the fourth controllable switch Q4, respectively. The second terminals of the third controllable switch Q3 and the fourth controllable switch Q4 are both grounded. The control terminals of the first controllable switch Q1, the second controllable switch Q2, the third controllable switch Q3, and the fourth controllable switch Q4 are all connected to the control terminal of the motor 5 of the controller 4.

[0066] The first controllable switch Q1 and the fourth controllable switch Q4 are used to be turned on simultaneously, and the second controllable switch Q2 and the third controllable switch Q3 are used to be turned on simultaneously.

[0067] The first controllable switch Q1 and the second controllable switch Q2 are the same MOSFET, and the third controllable switch Q3 and the fourth controllable switch Q4 are the same MOSFET. For example, the first controllable switch Q1 and the second controllable switch Q2 are NPN MOSFETs, and the third controllable switch Q3 and the fourth controllable switch Q4 are PNP MOSFETs.

[0068] The settings can be configured according to actual needs. For example, when the first controllable switch Q1 and the fourth controllable switch Q4 are turned on at the same time, the motor 5 rotates forward, and when the second controllable switch Q2 and the third controllable switch Q3 are turned on at the same time, the motor 5 rotates in reverse.

[0069] In some embodiments, a clamping module is also included;

[0070] The first end of the clamping module is connected to the vehicle power supply, the second end of the clamping module is connected to the output end of the backup power supply 2, and the output end of the clamping module is connected to the power supply end of the controller 4.

[0071] The clamping module is used to connect its first terminal to its third terminal when the vehicle power supply is normal, and to connect its second terminal to its third terminal when the vehicle power supply is abnormal.

[0072] To save energy, when the vehicle power supply is normal, the backup power supply 2 does not need to supply power to the controller 4. Therefore, a clamping module is set up so that the backup power supply 2 is not used when the vehicle power supply is normal.

[0073] In some embodiments, the clamping module includes a boost module 71 and a second diode D2;

[0074] The input terminal of the boost module 71 is connected to the output terminal of the backup power supply 2, the output terminal of the boost module 71 is connected to the anode of the second diode D2, and the cathode of the second diode D2 is connected to the power supply terminal of the controller 4.

[0075] The boost module 71 is used to boost the voltage output by the backup power supply 2 to power the controller 4, and the second diode D2 is used to cut off when the vehicle power supply is normal.

[0076] When the switch is normally connected to the battery, the switch input voltage is KL30 (9V-16V). The full-charge voltage Vcap of the supercapacitor is usually 3V, so Vcap needs to be boosted to 8V by the boost module 71. Due to the effect of the first diode D1 and the second diode D2, the voltage of V2 is greater than 8V, so the second diode D2 is cut off. The switch is powered by KL30, and the 9V-16V voltage is stepped down to VCC_5V by the buck module 6 to power the downstream controller 4, the touch chip 31, and the door motor 5. When a hand touches the door handle electrode 32, the touch chip 31 detects the change in capacitance and sends the change to the controller 4 via the I2C bus. The controller 4 determines that the capacitance exceeds the set threshold and outputs a signal to control the MOSFET to drive the door motor 5 to open the door. The controller 4 controls the charging management chip 1 to charge the supercapacitor via the I2C bus to keep the supercapacitor fully charged.

[0077] When KL30 is disconnected from the vehicle battery, D2 is forward-biased, and the switch is powered by the supercapacitor. The 8V output from the boost chip is stepped down to VCC_5V by the buck module 6 to power the subsequent controller 4, the touch chip 31, and the door motor 5. When a hand touches the door handle electrode 32, the touch chip 31 detects the change in capacitance and sends the change to the controller 4 via the I2C bus. The controller 4 determines that the capacitance exceeds a set threshold and then outputs a signal to control the MOSFET to drive the door motor 5 to open the door. This circuit allows the KL30 voltage to instantly switch to supercapacitor power after being disconnected from the vehicle battery, greatly improving the safety of the switch.

[0078] It should also be noted that, Figure 2 Resistors R1 and R2 are used for voltage division, and then the voltage output from the boost module is output to the FB pin of the boost module as feedback. Capacitors C1, C2, C3, C4, and C5 are all used for filtering.

[0079] This application also provides a touch door, including the aforementioned touch door switch.

[0080] The description of the touch-sensitive car door provided in this application is similar to the above embodiments and will not be repeated here.

[0081] This application also provides a vehicle including the aforementioned touch door.

[0082] Please refer to the above embodiments for a description of the vehicle provided in this application; it will not be repeated here.

[0083] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0084] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, article, or apparatus that includes said element.

[0085] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A touch-sensitive car door switch, characterized in that, include: A charging management chip, wherein the input terminal of the charging management chip is connected to the vehicle power supply and the output terminal of the charging management chip is connected to the input terminal of the backup power supply, for charging the backup power supply; The backup power supply has its output terminal connected to the power supply terminal of the controller, and is used to supply power to the controller. A door handle sensor, wherein the door handle sensor is used to sense the distance to the user and generate an opening signal to the controller; The controller's output is connected to the control terminal of the door motor so as to control the motor rotation based on the door opening signal; The motor is used to open or close the car door when it rotates.

2. The touch-sensitive door switch as described in claim 1, characterized in that, It also includes a first diode; The anode of the first diode is connected to the vehicle power supply, and the cathode of the first diode is connected to the power supply terminal of the controller for reverse protection.

3. The touch-sensitive door switch as described in claim 1, characterized in that, It also includes a step-down module; The input terminal of the step-down module is connected to the output terminals of the vehicle power supply and the backup power supply, respectively. The output terminal of the step-down module is connected to the power supply terminal of the controller, and is used to step down the voltage output by the vehicle power supply or the backup power supply to power the controller.

4. The touch-sensitive door switch as described in claim 1, characterized in that, The backup power source is a supercapacitor. The first terminal of the supercapacitor is connected to the output terminal of the charging management chip and the power supply terminal of the controller, respectively, and the second terminal of the supercapacitor is grounded. The supercapacitor is used to store electrical energy when the vehicle power supply is normal.

5. The touch-sensitive door switch as described in claim 1, characterized in that, The door handle sensing device includes a touch chip and door handle electrodes; The communication terminal of the door handle electrode is connected to the communication terminal of the touch chip, and the anti-interference terminal of the door handle electrode is connected to the anti-interference terminal of the touch chip. The door handle electrode is used to detect the distance between the user and the user, so that the touch chip can generate an opening signal based on the distance.

6. The touch-sensitive door switch as described in claim 1, characterized in that, It also includes a first controllable switch, a second controllable switch, a third controllable switch, and a fourth controllable switch; The first terminal of the first controllable switch and the first terminal of the second controllable switch are both connected to the power supply terminal of the controller. The second terminal of the first controllable switch is connected to the first terminal of the motor and the first terminal of the third controllable switch. The second terminal of the second controllable switch is connected to the second terminal of the motor and the first terminal of the fourth controllable switch. The second terminals of the third controllable switch and the fourth controllable switch are both grounded. The control terminals of the first controllable switch, the second controllable switch, the third controllable switch, and the fourth controllable switch are all connected to the motor control terminal of the controller. The first controllable switch and the fourth controllable switch are used to be turned on simultaneously, and the second controllable switch and the third controllable switch are used to be turned on simultaneously.

7. The touch-sensitive door switch as described in any one of claims 1 to 6, characterized in that, It also includes a clamping module; The first end of the clamping module is connected to the vehicle power supply, the second end of the clamping module is connected to the output end of the backup power supply, and the output end of the clamping module is connected to the power supply end of the controller. The clamping module is used to connect its first terminal to its third terminal when the vehicle power supply is normal, and to connect its second terminal to its third terminal when the vehicle power supply is abnormal.

8. The touch door switch as described in claim 7, characterized in that, The clamping module includes a boost module and a second diode; The input terminal of the boost module is connected to the output terminal of the backup power supply, the output terminal of the boost module is connected to the anode of the second diode, and the cathode of the second diode is connected to the power supply terminal of the controller. The boost module is used to boost the voltage output by the backup power supply to power the controller, and the second diode is used to cut off when the vehicle power supply is normal.

9. A touch-sensitive car door, characterized in that, Including the touch door switch as described in any one of claims 1 to 8.

10. A vehicle, characterized in that, Including the touch door as described in claim 9.

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