Anti-pinch control circuit and method for lifting car window motor
A control method and control circuit technology, which are applied to door/window accessories, power control mechanisms, wing leaf control mechanisms, etc.
Pending Publication Date: 2022-07-22
东风汽车有限公司东风日产乘用车公司
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Problems solved by technology
[0004] The main purpose of the present invention is to provide an anti-pinch control circuit and method for the motor of the lifting window, aiming at solving the technical problem that the anti-pinch reversal of the window cannot be realized when the resettable fuse is disconnected in the current hardware thermal protection design
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[0054] It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0055] The embodiment of the present invention provides an anti-pinch control circuit for raising and lowering a window motor, refer to figure 1 , figure 1 It is a schematic diagram of the circuit structure of the first embodiment of the anti-pinch control circuit of the motor for raising and lowering the window of the present invention.
[0056] In this embodiment, the anti-pinch control circuit of the lift window motor includes:
[0057] the main control unit 10, the drive unit 20 and the lift controller 30 connected in sequence;
[0058] a switch circuit 40, the switch circuit 40 is located between the lowering signal output end of the lift controller 30 and the lift window motor, and the input end of the switch circuit 40 is connected to the drive unit 20;
[0059] The main control unit 10 is configured t...
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The invention discloses an anti-pinch control circuit and method for a lifting car window motor. Comprising a main control unit, a driving unit and a lifting controller which are connected in sequence; the switching circuit is located between the descending signal output end of the lifting controller and the lifting car window motor, and the input end of the switching circuit is connected with the driving unit; when the main control unit determines that the anti-pinch action needs to be executed and detects that the resettable fuse is disconnected, the main control unit outputs an anti-pinch intention signal to the driving unit, so that the driving unit outputs a first control signal to the lifting controller and outputs a second control signal to the switching circuit; the lifting controller sucks the descending signal output end, so that the descending signal output end outputs a descending control signal; and the switching circuit is switched on, and the descending control signal is output to the car window lifting motor. By means of the mode, when the resettable fuse is disconnected, the descending control signal can still be output to the lifting car window motor, and the phenomenon that the anti-pinch reverse rotation function fails due to the fact that thermal protection of the lifting car window motor stops acting is avoided.
Description
technical field [0001] The invention relates to the technical field of automobiles, and in particular, to an anti-pinch control circuit and method for raising and lowering a window motor. Background technique [0002] Window lift is a high-frequency use function for customers, and it is necessary to carry out thermal protection design to avoid the accumulated heat generated by the motor running for a long time, resulting in hardware damage or safety hazards such as fire and smoke. At present, the motor hardware thermal protection scheme is to add a resettable fuse (PTC) inside the motor. If the PTC is disconnected when the anti-pinch is triggered or during the anti-pinch process, the electronic control unit (ECU) will not be able to control the motor to act, which will cause the vehicle The window is always in the state of clamping foreign objects or the amount of reversal is insufficient, and the complete anti-pinch reversal function cannot be realized. [0003] The above ...
Claims
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IPC IPC(8): E05F15/695E05F15/697E05F15/40
CPCE05F15/695E05F15/697E05F15/40
Inventor 李亚东潘朝晖刘召雄谭钦文
Owner 东风汽车有限公司东风日产乘用车公司