Ripple anti-pinch control system, motor and application

Abstract

The invention discloses a ripple anti-pinch control system, a motor and application, and relates to the technical field of electrical driving, and the ripple anti-pinch control system comprises an MCU integrator, a plurality of MOSFETs, a single-chip microcomputer and a power supply; wherein an MCU controller, an analog-to-digital converter, a voltage regulator and an MOS driver are arranged in the MCU integrator; one end of the power supply is connected in series with the single chip microcomputer and the MCU controller in sequence; the other end of the power supply is connected with the analog-to-digital converter and the voltage regulator; the MCU controller is used for controlling the MOS driver, the MOS driver is connected with the plurality of MOSFETs, and the plurality of MOSFETs are used for being connected with a motor. According to the invention, the control process is simplified, the cost is reduced, and the ripple anti-pinch function is realized by amplifying the ripple signal.

Description

Technical Field

[0001] The present invention relates to the field of electric drive technology, and more specifically to a ripple anti-pinch control system, a motor and applications. Background Art

[0002] For the mainstream body electrical architecture in the traditional market, the power supply system is based on 12V voltage, which will lead to low input voltage in actual use. Since the existing window lift motor has a small internal resistance design, in order to achieve the rated output power, the current will be amplified, so it is easy to achieve the ripple anti-pinch function. With the rise of new energy vehicles, the window motors on the market have upgraded the 12V voltage power supply system to a higher voltage, such as 48V, during the iteration of the body electrical system. This will lead to the problem of incompatibility of the original platform products, and due to the increase in the internal resistance of the motor, the motor current becomes smaller, making it impossible to achieve the ripple anti-pinch function.

[0003] In the existing technology, the anti-pinch solution for 48V automotive electric lifting window motors can only be achieved by using the Hall anti-pinch solution. However, the Hall anti-pinch solution requires the installation of a magnetic ring on each motor, and at the same time, a Hall sensor needs to be installed at a position close to the magnetic ring. The combination of the magnetic ring and the Hall sensor generates a square wave signal to determine the position. Generally, a vehicle has four doors and windows, so at least four sets of corresponding Hall sensors, magnetic rings, and anti-pinch controllers are required. This leads to a significant increase in costs, and the increase in parts will also make it more difficult to locate the fault problem, which needs to be improved. Summary of the invention

[0004] In view of this, the first purpose of this application is to provide a ripple anti-pinch control system to simplify the control process and reduce costs. The specific scheme is as follows:

[0005] A ripple anti-pinch control system comprises an MCU integrator, a plurality of MOSFETs, a single-chip microcomputer and a power supply; wherein the MCU integrator is provided with an MCU controller, an analog-to-digital converter, a voltage regulator and a MOS driver; one end of the power supply is connected in series with the single-chip microcomputer and the MCU controller in sequence; the other end of the power supply is connected with the analog-to-digital converter and the voltage regulator; the MCU controller is used to control the MOS driver, the MOS driver is connected with the plurality of MOSFETs, and the plurality of MOSFETs are used to be connected with a motor.

[0006] Preferably: a circuit breaker is provided between a corresponding end of the power supply and the analog-to-digital converter and the voltage regulator, and a resistor is provided between the other end of the power supply and the single-chip microcomputer.

[0007] Preferably: the multiple MOSFETs include a first MOSFET, a second MOSFET, a third MOSFET and a fourth MOSFET respectively connected to the MOS drivers, the first MOSFET and the third MOSFET are connected in parallel, and the other end is electrically connected to one end of the motor; the second MOSFET and the fourth MOSFET are connected in parallel, and the other end is electrically connected to the other end of the motor.

[0008] Preferably: the input end of the MCU controller is connected to a MOSFET FEEDBACK for feeding back the motor signal to the MCU controller, and the input end of the MOSFET FEEDBACK is used to be connected to both ends of the motor at the same time.

[0009] Preferably: the power supply is used to output a 48V voltage, and the voltage regulator is used to convert the 48V voltage into a rated voltage.

[0010] The second object of the present invention is to provide a ripple anti-pinch motor, including a ripple anti-pinch control system as described above, wherein the motor is provided with a control module insertion portion for installing the ripple anti-pinch control system and a rotor winding for driving and controlling the motor speed.

[0011] Preferably: the rotor winding is provided with a conducting wire with a wire diameter of 0.2-0.5 mm and a number of turns of 20-100 turns.

[0012] Preferably, the amplitude of the ripple current of the ripple anti-pinch motor is greater than 2.0A.

[0013] The third object of the present invention is to provide an application of a ripple anti-pinch motor, including using the ripple anti-pinch motor as described above and applying it to a 48V automobile electric lifting window circuit.

[0014] It can be seen from the above scheme that the present application provides a ripple anti-pinch control system, motor and application. The ripple anti-pinch control system is compatible with the 48V body system by controlling the output voltage. At the same time, it reduces the internal resistance of the motor, increases the current, amplifies the current signal, and realizes the ripple anti-pinch function. The ripple is used to detect whether the object is clamped by the window, thereby solving the problems of high cost and complex control process caused by the combination of Hall sensor, magnetic ring and anti-pinch controller in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a control system block diagram of this embodiment;

[0016] Figure 2 is a schematic diagram of the structure of the motor of this embodiment;

[0017] Figure 3 It is a motor ripple test diagram in the prior art;

[0018] Figure 4 It is the motor ripple test diagram of this embodiment.

[0019] Explanation of the reference numerals: 1. control module insertion part; 2. rotor winding. DETAILED DESCRIPTION

[0020] In order to make the technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0021] like Figure 1 As shown, a ripple anti-pinch control system includes an MCU integrator, multiple MOSFETs, a single-chip microcomputer and a power supply. Among them, the MCU integrator is provided with an MCU controller, an analog-to-digital converter, a voltage regulator and a MOS driver. The MCU controller is used to process input signals and feedback signals. The analog-to-digital converter is used to convert analog signals into digital signals. The voltage regulator is used to adjust the voltage. In an embodiment of the present application, the voltage regulator converts the 48V voltage of the power supply input into a rated voltage such as 12V, 13V, 14.5V, etc., so as to achieve the purpose of adapting to the current mainstream rated voltage requirements. The MOS driver is used to enhance the signal and achieve the purpose of amplifying the ripple signal.

[0022] like Figure 1 As shown, one end of the power supply is connected in series with the single-chip microcomputer and the MCU controller. The other end of the power supply is connected with the analog-to-digital converter and the voltage regulator. The MCU controller is used to control the MOS driver to achieve the driving operation of multiple MOSFETs. The MOS driver is connected to multiple MOSFETs, and the multiple MOSFETs are used to connect to the motor.

[0023] It should be mentioned that a circuit breaker is provided between the corresponding end of the power supply and the analog-to-digital converter and the voltage regulator, and a resistor is provided between the other end of the power supply and the single-chip microcomputer. Both the resistor and the circuit breaker have the purpose of protecting the circuit, thereby significantly improving the operating stability of the ripple anti-pinch control system.

[0024] Wherein, the plurality of MOSFETs include a first MOSFET, a second MOSFET, a third MOSFET and a fourth MOSFET respectively connected to the MOS driver. The first MOSFET and the third MOSFET are connected in parallel, and the other end is electrically connected to one end of the motor. The second MOSFET and the fourth MOSFET are connected in parallel, and the other end is electrically connected to the other end of the motor. At the same time, a MOSFET FEEDBACK for feeding back the motor signal to the MCU controller is connected to the input end of the MCU controller. The input end of the MOSFET FEEDBACK is used to be connected to both ends of the motor at the same time. In an embodiment of the present application, the power supply is used to output a 48V voltage, and the voltage regulator is used to convert the 48V voltage into a rated voltage, so as to achieve the purpose of amplifying current and ripple anti-pinch while meeting the 48V voltage platform.

[0025] like Figure 2 As shown, a ripple anti-pinch motor includes a ripple anti-pinch control system as described above, a control module insertion part 1 for installing the ripple anti-pinch control system, and a rotor winding 2 for driving and controlling the motor speed are arranged in the motor. The rotor winding 2 is composed of wires with corresponding wire diameters and numbers of turns. According to the voltage formula U=IR and the power formula P=UI, in order to ensure that the output power of the motor remains unchanged. In the embodiment of the present application, it is achieved by adjusting the resistance of the motor rotor winding. Specifically, the wire diameter of the wire that adjusts and controls the rotor winding 2 is 0.2-0.5mm, and the number of turns is 20-100 turns. Therefore, when the coil diameter is thickened and the number of turns is reduced, the motor winding resistance is reduced, the current passing through becomes larger, and the ripple signal is amplified to achieve the function of ripple anti-pinch.

[0026] After testing, such as Figure 3 , Figure 4 As shown, the amplitude of the ripple current of the ripple anti-pinch motor is greater than 2.0 A. Compared with the existing 48V motor ripple level, the ripple anti-pinch motor in the embodiment of the present application increases the amplitude of the ripple current from less than 0.32A to greater than 2.0A, thereby effectively meeting the requirements of the ripple anti-pinch function, ensuring the dynamic performance of the motor, and the ripple amplitude and energy power are high in purity and the energy distribution is reasonable, which is suitable for wide and stable application in 48V motors.

[0027] An application of a ripple anti-pinch motor includes using the ripple anti-pinch motor as described above and applying it to a 48V automobile electric lifting window circuit.

[0028] In summary, the present application provides a ripple anti-pinch control system, a motor and an application. The ripple anti-pinch control system is compatible with a 48V body system by controlling the output voltage. At the same time, the ripple anti-pinch function is realized by reducing the internal resistance of the motor, increasing the current and amplifying the current signal. The ripple is used to detect whether an object is clamped by the window, thereby solving the problems of high cost and complex control process caused by the combination of Hall sensors, magnetic rings and anti-pinch controllers in the prior art.

[0029] The "first", "second", "third", "fourth", etc. (if any) referred to in this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods or devices.

[0030] It should be noted that the descriptions involving "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0031] Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A ripple anti-pinch control system, characterized in that: It comprises an MCU integrator, a plurality of MOSFETs, a single-chip microcomputer and a power supply; wherein the MCU integrator is provided with an MCU controller, an analog-to-digital converter, a voltage regulator and a MOS driver; one end of the power supply is connected in series with the single-chip microcomputer and the MCU controller in sequence; the other end of the power supply is connected with the analog-to-digital converter and the voltage regulator; the MCU controller is used to control the MOS driver, the MOS driver is connected with the plurality of MOSFETs, and the plurality of MOSFETs are used to be connected with a motor.

2. A ripple anti-pinch control system according to claim 1, characterized in that: A circuit breaker is arranged between a corresponding end of the power supply and the analog-to-digital converter and the voltage regulator, and a resistor is arranged between the other end of the power supply and the single-chip microcomputer.

3. A ripple anti-pinch control system according to claim 1, characterized in that: The multiple MOSFETs include a first MOSFET, a second MOSFET, a third MOSFET and a fourth MOSFET respectively connected to the MOS drivers, the first MOSFET and the third MOSFET are connected in parallel, and the other ends are electrically connected to one end of the motor; the second MOSFET and the fourth MOSFET are connected in parallel, and the other ends are electrically connected to the other end of the motor.

4. A ripple anti-pinch control system according to claim 1, characterized in that: The input end of the MCU controller is connected to a MOSFET FEEDBACK for feeding back a motor signal to the MCU controller, and the input end of the MOSFET FEEDBACK is used to be connected to both ends of the motor at the same time.

5. The ripple anti-pinch control system according to claim 1, characterized in that: The power supply is used to output a 48V voltage, and the voltage regulator is used to convert the 48V voltage into a rated voltage.

6. A ripple anti-pinch motor, characterized in that: It comprises a ripple anti-pinch control system as claimed in any one of claims 1 to 5, wherein the motor is provided with a control module insertion part 1 for installing the ripple anti-pinch control system and a rotor winding 2 for driving and controlling the speed of the motor.

7. The ripple anti-pinch motor according to claim 6, characterized in that: The rotor winding is provided with a conducting wire with a wire diameter of 0.2-0.5 mm and a number of turns of 20-100 turns.

8. The ripple anti-pinch motor according to claim 7, characterized in that: The amplitude of the ripple current of the ripple anti-pinch motor is greater than 2.0A.

9. An application of a ripple anti-pinch motor, characterized in that: The invention comprises adopting the ripple anti-pinch motor as claimed in claim 6 and applying it to a 48V automobile electric lifting window circuit.

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