Vehicle window motor locked-rotor control device and vehicle window controller

Abstract

The utility model discloses a vehicle window motor locked-rotor control device and a vehicle window controller, relates to the technical field of vehicle body control, is used for realizing locked-rotor control of a vehicle window motor, and provides the vehicle window motor locked-rotor control device aiming at the problem that the locked-rotor of the vehicle window motor is not solved in time at present. Whether the motor is locked or not is judged by the controller; and if the motor is locked, the controller controls the motor to stop rotating so as to timely cut off the operation of the motor and avoid influencing the service life of the motor. In addition, the device utilizes a resistor as a sampling element to realize conversion from a current signal to a voltage signal; the voltage signal is amplified in an in-phase amplification mode; on the premise that the input requirement of any controller is met, the device is more reliable, easy to implement, low in cost and very suitable for batch production in actual vehicle production design, and the actual engineering and production requirements can be better met.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle body control, in particular to a vehicle window motor stall control device and a vehicle window controller. Background Art

[0002] With the continuous development of the vehicle industry, motor-driven window lifts have replaced traditional hand-cranked windows. In related technologies, the window motor is connected to micro switches S1 and S2 through the vehicle body wiring harness, and the user can control the rise and fall of the window by triggering the micro switch S1 or S2. Specifically, when the two micro switches are pressed respectively, the positive and reverse connection between the motor and the power supply can be controlled. For example, when the micro switch S1 is pressed, the motor is positively connected to the power supply, the motor rotates forward, and the window rises; when the micro switch S2 is pressed, the motor is reversely connected to the power supply, the motor rotates reversely, and the window falls.

[0003] However, the above-mentioned window control scheme has the problem of being unable to detect and control motor stalling. When the window motor stalls, it cannot be detected in time and measures cannot be taken, resulting in the motor stalling for a long time before entering a thermal protection state due to severe motor heating, causing the motor to stop working. It can be seen that although the motor is finally protected, the life of the motor will be reduced to a certain extent because the stalled motor is not stopped in time.

[0004] Therefore, technicians in this field are in urgent need of a window motor stall control device to solve the problem that the stalled motor cannot be stopped in time and the service life of the motor is affected. Utility Model Content

[0005] The utility model aims to provide a vehicle window motor stall control device and a vehicle window controller, which can solve the problem that the stall motor cannot be stopped in time and the service life of the motor is affected.

[0006] In order to solve the above technical problems, the utility model provides a vehicle window motor stall control device, comprising: a controller and a detection module;

[0007] Wherein, the detection module is connected with the controller and the motor to collect the working current of the motor;

[0008] The detection module includes: an operational amplifier, a first resistor, a second resistor, a third resistor, a fourth resistor and a first capacitor;

[0009] The first end of the first resistor is connected to the motor and the in-phase input end of the operational amplifier, and the second end of the first resistor is grounded; the inverting input end of the operational amplifier is grounded through the second resistor and connected to the output end of the operational amplifier through the third resistor; the output end of the operational amplifier is connected to the controller through the fourth resistor; the common end of the controller and the fourth resistor is grounded through the first capacitor;

[0010] The controller is used to determine whether the motor is stalled according to the working current, and control the motor to stop when the motor is stalled.

[0011] On the one hand, it also includes: a two-position relay;

[0012] Wherein, the double position relay comprises: a first electromagnetic coil, a second electromagnetic coil, a first contact switch and a second contact switch;

[0013] The first electromagnetic coil and the second electromagnetic coil are connected to the controller;

[0014] The first contact switch of the two-position relay is arranged in the first power supply circuit of the motor, and is used to control the on-off state of the first power supply circuit; when the first power supply circuit is turned on, the motor is reversely connected to the first power supply;

[0015] The second contact switch of the two-position relay is arranged in the second power supply circuit of the motor, and is used to control the on-off state of the second power supply circuit; when the second power supply circuit is turned on, the motor is positively connected to the first power supply.

[0016] On the other hand, it also includes: a driving module;

[0017] The driving module is connected to the controller and the two electromagnetic coils, and is used to control the on and off states of the two electromagnetic coils according to the control signal output by the controller.

[0018] On the other hand, the driving module includes: a first switch module, a second switch module, a fifth resistor and a sixth resistor;

[0019] Wherein, the control ends of the first switch module and the second switch module are respectively connected to different output ends of the controller;

[0020] The first end of the first switch module is grounded; the second end of the first switch module is connected to the first end of the fifth resistor and the first end of the first electromagnetic coil; the second end of the fifth resistor and the second end of the first electromagnetic coil are connected to the second power supply;

[0021] The second end of the second switch module is grounded; the first end of the second switch module is connected to the second end of the sixth resistor and the second end of the second electromagnetic coil; the first end of the sixth resistor and the first end of the second electromagnetic coil are connected to the second power supply.

[0022] On the other hand, it also includes: a key circuit;

[0023] The key circuit includes: a down switch, a one-key down switch, an up switch and a pull-up resistor;

[0024] The first ends of the down switch, the one-key down switch and the up switch are all grounded, and the second ends of the down switch, the one-key down switch and the up switch are respectively connected to the controller and respectively connected to the third power supply through different pull-up resistors.

[0025] On the other hand, there are multiple rising switches, and the multiple rising switches are connected in parallel.

[0026] On the other hand, it also includes: a filter circuit;

[0027] The filter circuit is arranged between the controller and the output end of the operational amplifier, between the controller and the down switch, between the controller and the one-key down switch, and between the controller and the up switch.

[0028] On the other hand, the filter circuit includes: a filter resistor and a filter capacitor;

[0029] The filter resistor is arranged between the output end of the operational amplifier and the controller; the first end of the filter capacitor is connected to the filter resistor and the controller, and the second end of the filter capacitor is grounded.

[0030] On the other hand, it also includes: registers;

[0031] The register is connected to the controller, and the register stores a stall current threshold and a stall duration threshold.

[0032] In order to solve the above technical problems, the utility model also provides a vehicle window controller, including the above-mentioned vehicle window motor stall control device.

[0033] The utility model provides a window motor stall control device. When the motor stalls, the stall working current is significantly greater than the normal working current of the motor under normal operation. Therefore, the device collects the working current of the motor through the detection circuit, so that the controller can judge whether the motor is stalled. If the motor stalls, the controller controls the motor to stop, and cuts off the motor operation in time, so as to avoid affecting the motor life due to the long-term stall. In addition, the detection circuit in the device converts the collection of the motor current signal into the collection of the voltage signal through the first resistor, which is easier to be recognized and compared by the controller, and is simple and reliable to implement. On the other hand, the detection circuit in the device also amplifies the voltage signal collected by the sampling resistor through the operational amplifier, and the amplification adopts the connection mode of in-phase amplification, which has higher gain, higher input impedance and stronger anti-noise ability, and can further ensure the reliability of the overall circuit. Therefore, the motor stall control circuit implemented based on the device is simple and easy to implement, low cost and reliable, and is suitable for assembly line batch production in actual vehicle production.

[0034] The vehicle window controller provided by the utility model corresponds to the above-mentioned vehicle window motor stall control device and has the same effect as above. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present utility model, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 This is a circuit diagram of a common car window controller;

[0037] Figure 2 A circuit diagram of a window motor stall control device provided by the utility model;

[0038] Figure 3 A circuit diagram of the motor control and drive part of a vehicle window motor stall control device provided by the utility model;

[0039] Figure 4 The utility model provides a circuit structure diagram of the key circuit part of a vehicle window motor stall control device. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0041] The core of the utility model is to provide a vehicle window motor stall control device and a vehicle window controller.

[0042] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0043] At present, in order to realize the control of the rise and fall of the vehicle window, a common window motor control circuit is as follows Figure 1 As shown, it includes: two micro switches S1, S2, and a motor.

[0044] The user can control the raising or lowering of the window by pressing the micro switches S1 and S2.

[0045] For example, when the micro switch S1 is pressed, the fixed contact of the micro switch S1 is connected to the contact 2, and the fixed contact of the micro switch S2 remains connected to the contact 1; the positive terminal (M5) of the motor is connected to the power supply (M3), and the negative terminal (M12) is grounded (M8); at this time, the motor rotates forward and the car window rises.

[0046] Similarly, when the micro switch S2 is pressed, the fixed contact of the micro switch S2 is connected to the contact 2, and the fixed contact of the micro switch S1 remains connected to the contact 1; the positive terminal (M5) of the motor is grounded (M8), and the negative terminal (M12) is connected to the power supply (M3); at this time, the motor reverses and the window drops.

[0047] It can be seen from this that Figure 1 In the window control scheme shown, the control of the window up and down depends on the user's operation of the micro switches S1 and S2. The circuit cannot detect whether the motor is blocked, and the user cannot sense whether the motor is blocked. Therefore, even if the motor is blocked, the motor cannot be stopped in time, causing the motor to overheat due to long-term blocking. Even if the overheat protection is triggered, it will seriously affect the service life of the motor.

[0048] To solve this problem, the utility model provides a window motor stall control device, such as Figure 2 As shown, it includes: a controller 11 and a detection module 12;

[0049] The detection module 12 is connected to the controller 11 and the motor 13 and is used to collect the working current of the motor 13;

[0050] The detection module 12 includes: an operational amplifier U1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4 and a first capacitor C1;

[0051] The first end of the first resistor R1 is connected to the motor 13 and the in-phase input end of the operational amplifier U1, and the second end of the first resistor R1 is grounded; the inverting input end of the operational amplifier U1 is grounded through the second resistor R2, and connected to the output end of the operational amplifier U1 through the third resistor R3; the output end of the operational amplifier U1 is connected to the controller 11 through the fourth resistor R4; the common end of the controller 11 and the fourth resistor R4 is grounded through the first capacitor C1;

[0052] The controller 11 is used to determine whether the motor 13 is stalled according to the working current, and control the motor 13 to stop rotating when the motor 13 is stalled.

[0053] From the above, it can be seen that the device realizes whether the window motor is blocked and controls the motor after the blockage mainly depends on the controller and the detection module.

[0054] For the detection module, the above description and Figure 2 The specific circuit structure has been given in: the detection module connects the first resistor to the motor as a sampling resistor to convert the collection of the motor working current into the collection of the voltage signal; then, the operational amplifier, the second resistor, and the third resistor constitute a common-phase amplification circuit structure, which is used to amplify the voltage signal collected by the first sampling resistor in the same phase, in preparation for the subsequent recognition and judgment of the controller; finally, the fourth resistor and the first capacitor constitute a simple RC filter circuit structure, which is used to filter the voltage signal after the common-phase amplification of the operational amplifier and input it into the control, so as to further ensure the accuracy and reliability of the collection of the motor working current.

[0055] After the detection module collects the working current of the motor, it converts it into a suitable voltage signal and sends it to the controller. The controller can judge whether the motor is currently stuck based on the collected working current based on the principle that "the working current when the motor is stuck is much larger than the working current under normal working conditions".

[0056] It can be seen from the circuit structure of the above-mentioned detection circuit that the detection circuit can convert the working current of the motor into a suitable voltage signal in any voltage domain through the setting of the sampling resistor and the common-phase amplifier circuit; and the principle or basis for judging whether the current motor is stuck is to judge whether the current motor working current is much larger than the working current under normal working conditions; so after converting the parameter range of the working current of the motor under normal working conditions into voltage form, the controller only needs to simply compare whether the voltage value returned by the detection module falls within the preset parameter range to realize the judgment of motor stall; when it is judged that the motor is stuck, the motor can be controlled to stop.

[0057] Among them, the working current parameter range under normal working conditions, which is used as the motor stall judgment standard, can be determined based on the working current parameter calibrated when the motor leaves the factory, which is a certain percentage above and below the midpoint. For example, assuming that the calibrated working current parameter is Is, the working current parameter range determined based on this can be Is±X%, where X represents the percentage value of the upper and lower fluctuations.

[0058] Based on the above requirements for the controller, the controller can be implemented by any suitable hardware device, such as a microcontroller unit (MCU), a central processing unit (CPU), a field programmable gate array (FPGA), a complex programmable logic device (CPLD), etc. The utility model does not limit the specific hardware implementation of the controller.

[0059] It should be noted that, for a specific determination scheme in which the controller determines whether the current motor is stalled based on the voltage signal collected by the detection module, this embodiment also provides a possible implementation scheme:

[0060] like Figure 2 As shown, the working current of the motor is converted by the detection module and amplified in phase to obtain a voltage signal. The voltage amplification formula based on the detection module is:

[0061]

[0062] Among them, Vc represents the voltage value of the above voltage signal; R1, R2, R3 represent the resistance values ​​of the first resistor, the second resistor, and the third resistor respectively; Iw represents the working current value of the motor.

[0063] Based on the above voltage amplification formula, the voltage signal can be converted into any voltage domain to meet the voltage identification needs of the controller. Furthermore, for the converted voltage comparison to determine whether the motor is blocked, the predetermined normal working current parameter range of the motor can be converted into a parameter range in voltage form, and then amplified in the same way to obtain the final blocking judgment parameter range, which is used for the comparison of the controller to determine whether the current motor is blocked.

[0064] In addition, for the control of motor stall, the stall time can also be introduced, that is, the motor is controlled to stop only when the controller determines that the motor has been stalled for a certain period of time, so as to avoid affecting the normal operation of the motor due to false detection. Based on this, this embodiment provides a corresponding implementation scheme, and the device also includes: a register;

[0065] The register is connected to the controller, and the register stores a stall current threshold and a stall duration threshold.

[0066] The stall current threshold can be converted into a stall discrimination parameter range for direct comparison in the controller based on the conversion scheme described in the above embodiment. The stall duration threshold is used when the controller determines that a stall has occurred and stops the motor only when the stall duration exceeds the stall duration threshold to avoid interference with the normal operation of the motor.

[0067] The utility model provides a window motor stall control device, which collects the working current of the motor through a detection circuit; because the working current of the motor is much larger than usual when it is stalled, the controller can judge whether the motor is stalled at the current moment based on the collected working current; if it is stalled, the controller will control the motor to stop in time to avoid overheating of the motor due to long-term stalling, thereby increasing the service life of the motor. In particular, the detection module used to detect the working current of the motor in the device uses a resistor as a sampling element to realize the conversion of the current signal to the voltage signal; and the voltage signal is amplified by an operational amplifier in the same phase amplification mode; under the premise of meeting the input voltage domain requirements of any controller, the converted voltage signal is made more accurate and stable, thereby making the device more reliable; in addition, based on the circuit structure described above, the device is simple to implement and low-cost, and is very suitable for mass production in actual vehicle production design, and better meets the actual engineering and production needs.

[0068] On the other hand, in the above embodiments, the emphasis is on the controller's control of the motor's stalling. However, the above embodiments do not limit the control of the motor's normal forward and reverse working conditions to be implemented by the controller. It can be implemented based on the controller or based on other control devices. This embodiment does not limit this. However, this embodiment provides an implementation scheme based on the controller to implement the control of the motor including normal working conditions, such as Figure 3 As shown, the device also includes: a two-position relay K1;

[0069] The two-position relay includes a first electromagnetic coil, a second electromagnetic coil, a first contact switch and a second contact switch.

[0070] The first electromagnetic coil and the second electromagnetic coil are connected to the controller;

[0071] The first contact switch of the two-position relay is arranged in the first power supply circuit of the motor, and is used to control the on-off state of the first power supply circuit; when the first power supply circuit is turned on, the motor is reversely connected to the first power supply;

[0072] The second contact switch of the two-position relay is arranged in the second power supply circuit of the motor, and is used to control the on-off state of the second power supply circuit; when the second power supply circuit is turned on, the motor is positively connected to the first power supply.

[0073] Based on the circuit structure provided in this embodiment, the controller can control the positive or reverse connection of the motor and the power supply by controlling whether any electromagnetic coil of the two-position relay is energized; when the motor is connected in the positive direction, the motor rotates forward and drives the window to rise; when the motor is connected in the reverse direction, the motor rotates in the reverse direction and drives the window to fall.

[0074] Furthermore, considering that a common controller is not sufficient to drive the contact switch of a two-position relay, in order to reduce the requirements on the controller, this embodiment further provides an implementation scheme based on the above embodiment, such as Figure 2 As shown, the device further includes: a driving module 14;

[0075] The drive module 14 is connected to the controller 11 and the two electromagnetic coils, and is used to control the on / off state of the two electromagnetic coils according to the control signal output by the controller 11, so as to solve the problem that the output of the general controller 11 is insufficient to drive the switching of the two-position relay contact switch.

[0076] Furthermore, although this embodiment does not limit the specific implementation of the driving module 14, it provides a possible implementation scheme as follows: Figure 3 As shown, the driving module 14 includes: a first switch module T1, a second switch module T2, a fifth resistor R5 and a sixth resistor R6;

[0077] Wherein, the control ends of the first switch module T1 and the second switch module T2 are respectively connected to different output ends of the controller 11;

[0078] The first end of the first switch module T1 is grounded; the second end of the first switch module T1 is connected to the first end of the fifth resistor R5 and the first end of the first electromagnetic coil; the second end of the fifth resistor R5 and the second end of the first electromagnetic coil are connected to the second power supply;

[0079] The second end of the second switch module T2 is grounded; the first end of the second switch module T2 is connected to the second end of the sixth resistor R6 and the second end of the second electromagnetic coil; the first end of the sixth resistor R6 and the first end of the second electromagnetic coil are connected to the second power supply.

[0080] It can be seen that in this embodiment, the controller controls the conduction state of the first switch module and the second switch module to control the conduction of the circuit where the first electromagnetic coil or the second electromagnetic coil is located. The electromagnetic coil is driven by the second power supply (12V), and the conduction control of the first switch module and the second switch module can be realized by the switch tube, and the driving capability requirement is much lower than that of the relay. Therefore, based on the circuit setting of this embodiment, the output of the controller only needs to meet the conduction control requirements of the first switch module and the second switch module to complete the control of the relay, which greatly reduces the requirements for the controller, thereby making the device easier to implement.

[0081] Furthermore, based on the motor control and drive structure provided in the above embodiment, Figure 3 Take this as an example to explain the workflow of the controller controlling the motor to rotate forward or reverse:

[0082] 1. When the controller requires the window to rise;

[0083] The output terminal P17 of the controller outputs a high level, the second switch module T2 is turned on, and the lower part of the two-position relay K1 is energized (i.e. Figure 3 The electromagnetic coil in the middle and lower part is energized); at this time, the positive terminal X103 of the motor is connected to the third power supply (i.e. Figure 3 The upper middle contact switch is thrown right, the lower contact switch is thrown left, X103 is connected to the third power supply IG1), the drive motor rotates forward, and the window rises; and the positive terminal is connected to the ground through the first resistor R1 to draw out the working current.

[0084] 2. When the controller requires the window to be lowered;

[0085] The output terminal P16 of the controller outputs a high level, the second switch module T1 is turned on, and the upper part of the two-position relay K1 is energized (i.e. Figure 3 The electromagnetic coil in the middle and upper part is energized); at this time, the negative terminal X104 of the motor is connected to the third power supply (i.e. Figure 3 The upper middle contact switch is thrown to the left, the lower contact switch is thrown to the right, X104 is connected to the third power supply IG1), the driving motor is reversed, and the window is lowered; and the negative terminal is connected to the ground through the first resistor R1 to draw out the working current.

[0086] On the other hand, this embodiment also provides a possible implementation scheme for how the controller learns the user's specific control requirements for the vehicle window, such as Figure 4 As shown, the device also includes: a key circuit;

[0087] The key circuit includes: a down switch K2, a one-key down switch K5, an up switch (K3, K4) and a pull-up resistor (R7, R8, R9);

[0088] The first ends of the down switch, one-key down switch and up switch are all grounded, and the second ends of the down switch, one-key down switch and up switch are respectively connected to the controller and respectively connected to the third power supply VCC through different pull-up resistors.

[0089] From the above, it can be seen that when the down switch K2, the one-touch down switch K5, and the up switch (K3, K4) in this embodiment are pressed, the corresponding circuit sends a low-level signal to the controller to inform the controller of the current user's window control requirements.

[0090] It should be noted that the key circuit provided in this embodiment also includes a one-key down switch. When the one-key down switch is pressed, even if the user releases it later, the controller will continue to control the window to go down until a stall occurs (i.e. the window goes down to the bottom). Figure 3As for the forward and reverse control of the motor in the above-mentioned embodiment, only when the controller P121 receives a low-level signal (that is, when the down switch is closed), the controller P16 outputs a high-level signal to drive the motor to reverse and the window to descend. When the user releases the down switch, the window stops descending. When the controller P137 receives a low-level signal once (that is, when the one-key down switch is closed once), the controller P16 continues to output a high-level signal to drive the motor to reverse and the window to descend until the controller determines that the motor is blocked according to the voltage signal input from the P34 terminal.

[0091] Furthermore, this embodiment also provides a further implementation scheme for the above-mentioned key circuit, such as Figure 4 As shown, there are multiple rising switches, and the multiple rising switches are connected in parallel.

[0092] It can be seen from the above embodiments that both the down switch and the one-touch down switch are used to drive the window down. Although the specific functions are not completely the same, the redundant setting of the window down function is realized to a certain extent, which improves the reliability of the window down function. However, the window up function is not redundantly set, and the reliability needs to be improved. Therefore, this embodiment sets a redundant setting for the up switch, and realizes redundancy by connecting multiple up switches in parallel, ensuring that the window up function can still be realized normally when any up switch fails, thereby improving the reliability of the window controller.

[0093] On the other hand, this embodiment also provides another preferred embodiment, the above-mentioned device further includes: a filter circuit;

[0094] The filter circuit is arranged between the controller and the output end of the operational amplifier, between the controller and the down switch, between the controller and the one-key down switch, and between the controller and the up switch.

[0095] Furthermore, this embodiment also provides a possible implementation scheme for the filter circuit provided in the above embodiment, such as Figure 4 As shown, the filter circuit includes: filter resistors (R10, R11, R12) and filter capacitors (C2, C3, C4);

[0096] The filter resistor is arranged between the output end of the operational amplifier and the controller; the first end of the filter capacitor is connected to the filter resistor and the controller, and the second end of the filter capacitor is grounded.

[0097] This embodiment further improves the accuracy of the controller receiving and outputting signals by setting a filtering circuit, avoids the influence of interference on the control, and improves the stability and reliability of the overall circuit.

[0098] In the above embodiments, a vehicle window motor stall control device is described in detail. The utility model also provides a corresponding embodiment of a vehicle window controller, a vehicle window controller, including the vehicle window motor stall control device described in any of the above embodiments.

[0099] Since the embodiments of the window controller part correspond to the embodiments of the window motor stall control device part, the embodiments of the window controller part refer to the description of the embodiments of the window motor stall control device part, which will not be described here.

[0100] The above is a detailed introduction to a vehicle window motor stall control device and a vehicle window controller provided by the utility model. The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the utility model.

[0101] It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

Claims

1. A window motor stall control device, characterized in that: include: Controller and detection module; Wherein, the detection module is connected to the controller and the motor, and is used to collect the working current of the motor; The detection module includes: an operational amplifier, a first resistor, a second resistor, a third resistor, a fourth resistor and a first capacitor; The first end of the first resistor is connected to the motor and the in-phase input end of the operational amplifier, and the second end of the first resistor is grounded; the inverting input end of the operational amplifier is grounded through the second resistor, and connected to the output end of the operational amplifier through the third resistor; the output end of the operational amplifier is connected to the controller through the fourth resistor; the common end of the controller and the fourth resistor is grounded through the first capacitor; The controller is used to determine whether the motor is stalled according to the working current, and control the motor to stop when the motor is stalled.

2. The window motor stall control device according to claim 1, characterized in that: Also includes: Two-position relay; Wherein, the two-position relay comprises: a first electromagnetic coil, a second electromagnetic coil, a first contact switch and a second contact switch; The first electromagnetic coil and the second electromagnetic coil are connected to the controller; The first contact switch of the two-position relay is arranged in the first power supply circuit of the motor, and is used to control the on-off state of the first power supply circuit; when the first power supply circuit is turned on, the motor is reversely connected to the first power supply; The second contact switch of the two-position relay is arranged in the second power supply circuit of the motor, and is used to control the on-off state of the second power supply circuit; when the second power supply circuit is turned on, the motor is positively connected to the first power supply.

3. The window motor stall control device according to claim 2, characterized in that: Also includes: Driver module; The driving module is connected to the controller and the two electromagnetic coils, and is used to control the on and off states of the two electromagnetic coils according to a control signal output by the controller.

4. The window motor stall control device according to claim 3, characterized in that: The driving module includes: a first switch module, a second switch module, a fifth resistor and a sixth resistor; Wherein, the control ends of the first switch module and the second switch module are respectively connected to different output ends of the controller; The first end of the first switch module is grounded; the second end of the first switch module is connected to the first end of the fifth resistor and the first end of the first electromagnetic coil; the second end of the fifth resistor and the second end of the first electromagnetic coil are connected to the second power supply; The second end of the second switch module is grounded; the first end of the second switch module is connected to the second end of the sixth resistor and the second end of the second electromagnetic coil; the first end of the sixth resistor and the first end of the second electromagnetic coil are connected to the second power supply.

5. The window motor stall control device according to claim 1, characterized in that: Also includes: Button circuit; Wherein, the key circuit includes: a down switch, a one-key down switch, an up switch and a pull-up resistor; The first ends of the down switch, the one-key down switch and the up switch are all grounded, and the second ends of the down switch, the one-key down switch and the up switch are respectively connected to the controller and respectively connected to the third power supply through different pull-up resistors.

6. The window motor stall control device according to claim 5, characterized in that: There are multiple rising switches, and the multiple rising switches are connected in parallel.

7. The window motor stall control device according to claim 5, characterized in that: Also includes: Filter circuit; The filter circuit is arranged between the controller and the output end of the operational amplifier, between the controller and the down switch, between the controller and the one-key down switch, and between the controller and the up switch.

8. The window motor stall control device according to claim 7, characterized in that: The filter circuit comprises: a filter resistor and a filter capacitor; The filter resistor is arranged between the output end of the operational amplifier and the controller; the first end of the filter capacitor is connected to the filter resistor and the controller, and the second end of the filter capacitor is grounded.

9. The window motor stall control device according to any one of claims 1 to 8, characterized in that: Also includes: register; The register is connected to the controller, and a stall current threshold and a stall duration threshold are stored in the register.

10. A vehicle window controller, characterized in that: The invention comprises the vehicle window motor stall control device as claimed in any one of claims 1 to 9.

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