Device for solving electromagnetic radiation of wiper motor from 1447M to 1494M

Abstract

The utility model relates to the technical field of electromagnetic radiation, in particular to a device for solving the electromagnetic radiation of a wiper motor from 1447M to 1494M, which comprises a power supply module, a filtering module and a motor which are electrically connected in sequence, the power supply module is used for providing a power supply, and the filtering module comprises an inductor L1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, an inductor L2, a capacitor C6, a capacitor C7, a capacitor C8 and a capacitor C9. According to the utility model, the filtering module adopts EMI filtering, so that external interference signals can be attenuated and prevented from entering the electronic equipment, normal operation of the motor is ensured, other sensitive electronic elements are protected, and the practicability is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electromagnetic radiation, specifically, it relates to a device for solving the electromagnetic radiation of wiper motors 1447M to 1494M. BACKGROUND

[0002] With the continuous progress of science and technology, the automobile industry is undergoing rapid development and change; Today's cars are no longer just a means of transportation, but a complex system that integrates many advanced electronic devices. With the increasing number of electronic devices, the electromagnetic environment inside the car has become increasingly complex. Various electronic components will produce varying degrees of electromagnetic radiation when working. These radiations superimpose on each other, making the electromagnetic environment inside the car extremely complex. The wiper motor, as one of the important components of the car, will inevitably produce electromagnetic radiation during operation.

[0003] This electromagnetic radiation may interfere with the surrounding electronic devices, affecting the normal operation of the car. For example, it may interfere with the signal reception of the car radio, causing the sound quality to decrease, and causing noise problems. It may also affect the positioning accuracy of the navigation system, making it difficult for the driver to accurately obtain location information during driving. In addition, electromagnetic radiation may also interfere with other electronic control units inside the car, affecting the safety and reliability of the car.

[0004] In view of the above problems, a device is needed to solve the electromagnetic radiation of wiper motors 1447M to 1494M. It is necessary to effectively reduce the electromagnetic radiation intensity of the wiper motor and reduce its interference with surrounding electronic devices to improve the overall performance and reliability of the car. SUMMARY

[0005] The utility model aims at providing a device for solving the electromagnetic radiation of wiper motors 1447M to 1494M to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A device for solving the electromagnetic radiation of wiper motors 1447M to 1494M, comprising a power supply module, a filter module and a motor connected in sequence, the power supply module is used for providing power, the filter module comprises inductance L1, capacitance C1, capacitance C2, capacitance C3, capacitance C4, capacitance C5, inductance L2, capacitance C6, capacitance C7, capacitance C8 and capacitance C9;

[0008] The first end of the inductor L1 is connected with the first output end of the power module, the second end of the inductor L1 is connected with the first end of the inductor L2, the first end of the capacitor C1 is connected with the second end of the inductor L1, the second end of the capacitor C1 is connected with the second output end of the power module, the first end of the capacitor C2 is connected with the second end of the inductor L1, the first end of the capacitor C3 is connected with the second end of the capacitor C2, the second end of the capacitor C3 is connected with the second end of the capacitor C1, the first end of the capacitor C4 is connected with the ground, the second end of the capacitor C4 is connected with the second end of the capacitor C2, the first end of the capacitor C5 is connected with the first end of the capacitor C2, the second end of the capacitor C5 is connected with the second end of the capacitor C3, the second end of the inductor L2 is connected with the second end of the capacitor C1, the first end of the capacitor C6 is connected with the third end of the inductor L2, the second end of the capacitor C6 is connected with the first end of the capacitor C7, the second end of the capacitor C7 is connected with the fourth end of the inductor L2, the first end of the capacitor C8 is connected with the second end of the capacitor C6, the second end of the capacitor C8 is connected with the ground, the first end of the capacitor C9 is connected with the first end of the capacitor C6, and the second end of the capacitor C9 is connected with the second end of the capacitor C7.

[0009] As preferred, the first end of the motor is connected with the first end of the capacitor C9, and the second end of the motor is connected with the second end of the capacitor C9.

[0010] As preferred, the filter module further comprises resistors R1 and R2, the first end of the resistor R1 is connected with the first end of the capacitor C5, the second end of the resistor R1 is connected with the second end of the capacitor C5, the first end of the resistor R2 is connected with the first end of the capacitor C9, and the second end of the resistor R2 is connected with the second end of the capacitor C9.

[0011] As preferred, the inductor L1 is a differential mode inductor, the inductor L2 is a common mode inductor, the capacitor C1 is a differential mode capacitor, the capacitor C5 and the capacitor C9 are X capacitors, and the capacitor C2, the capacitor C3, the capacitor C4, the capacitor C6, the capacitor C7 and the capacitor C8 are Y capacitors.

[0012] As preferred, the power module outputs direct current.

[0013] Compared with the prior art, the utility model has the advantages of:

[0014] The utility model discloses a filter module is set up, and the filter module uses EMI filter, can attenuate these external interference signals, prevents them from entering the inside of electronic equipment, thereby guaranteeing the normal operation of the motor, and the practicality is stronger. DRAWINGS

[0015] Figure 1 It is the whole structure schematic diagram of utility model;

[0016] Figure 2 It is the structure schematic diagram in utility model;

[0017] In the drawing:

[0018] 1, power module;

[0019] 2, filter module;

[0020] 3, motor. DETAILED DESCRIPTION

[0021] The technical solutions in the utility model will be described clearly and completely below in combination with the drawings in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0022] Please refer to Figure 1 and Figure 2 The utility model provides technical schemes:

[0023] For solving the electromagnetic radiation device of wiper motor 1447M to 1494M, including the power module 1, filter module 2 and motor 3 that are electrically connected in turn, power module 1 is used to provide power supply, filter module 2 includes inductance L1, capacitor C1, capacitor C2, capacitor C3, capacitor C4, capacitor C5, inductance L2, capacitor C6, capacitor C7, capacitor C8 and capacitor C9, filter module 2 is the low pass filter of series inductance and parallel capacitor, so that high-frequency interference is hindered or flows out from the bypass, common mode inductance, differential mode inductance makes high-frequency interference into the thermal energy of ferrite;

[0024] The first end of inductance L1 is connected with the first output end of power module 1, the second end of inductance L1 is connected with the first end of inductance L2, the first end of capacitor C1 is connected with the second end of inductance L1, the second end of capacitor C1 is connected with the second output end of power module 1, the first end of capacitor C2 is connected with the second end of inductance L1, the second end of capacitor C2 is connected with the first end of capacitor C3, the second end of capacitor C3 is connected with the second end of capacitor C1, the first end of capacitor C4 is connected with ground, the second end of capacitor C4 is connected with the second end of capacitor C2, the first end of capacitor C5 is connected with the first end of capacitor C2, the second end of capacitor C5 is connected with the second end of capacitor C3, the second end of inductance L2 is connected with the second end of capacitor C1, the first end of capacitor C6 is connected with the third end of inductance L2, the second end of capacitor C6 is connected with the first end of capacitor C7, the second end of capacitor C7 is connected with the fourth end of inductance L2, the first end of capacitor C8 is connected with the second end of capacitor C6, the second end of capacitor C8 is connected with ground, the first end of capacitor C9 is connected with the first end of capacitor C6, and the second end of capacitor C9 is connected with the second end of capacitor C7.

[0025] In the embodiment, the first end of motor 3 is connected with the first end of capacitor C9, and the second end of motor 3 is connected with the second end of capacitor C9.

[0026] Specifically, the filter module 2 further comprises a resistor R1 and a resistor R2, the resistor R1 has a first end connected to a first end of the capacitor C5, a second end of the resistor R1 is connected to a second end of the capacitor C5, the resistor R1 is used for discharging the charge on the capacitor C5, the resistor R2 has a first end connected to a first end of the capacitor C9, a second end of the resistor R2 is connected to a second end of the capacitor C9, and the resistor R2 is used for discharging the charge on the capacitor C8.

[0027] Further, the inductor L1 is a differential mode inductor, the inductor L2 is a common mode inductor, the capacitor C1 is a differential mode capacitor, the capacitor C5 and the capacitor C9 are X capacitors, and the capacitor C2, the capacitor C3, the capacitor C4, the capacitor C6, the capacitor C7 and the capacitor C8 are Y capacitors, the X capacitor is used to eliminate differential mode interference, and the Y capacitor is used to eliminate common mode interference.

[0028] In addition, the power module 1 outputs direct current, and a BUCK converter can be used to output direct current.

[0029] In addition, a shell shield can also be used to ensure that the wiper motor and related equipment have good grounding. The grounding resistance should be as low as possible to provide an effective electromagnetic interference discharge path.

[0030] The utility model discloses a for solving wiper motor 1447M to 1494M electromagnetic radiation device when using, power module 1 outputs direct current, the inductor L1 in filter module 2 is differential mode inductor, the inductor L2 is common mode inductor, the capacitor C1 is differential mode capacitor, the capacitor C5 and the capacitor C9 are X capacitors, and the capacitor C2, the capacitor C3, the capacitor C4, the capacitor C6, the capacitor C7 and the capacitor C8 are Y capacitors, the X capacitor is connected to the both ends of input line and is used to eliminate differential mode interference, and the Y capacitor is connected between input line and ground wire and is used to eliminate common mode interference, discharges current through resistor R1 and resistor R2 again, solves the high frequency interference that motor 3 generates when using, protects other electronic devices, makes motor 3 normal work, and the practicality is stronger.

[0031] The basic principle, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the utility model and do not limit the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A device for solving electromagnetic radiation of wiper motor 1447M to 1494M, comprising a power module (1), a filter module (2) and a motor (3) connected in sequence, characterized in that: The power module (1) is used for providing power, and the filter module (2) comprises an inductor L1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, an inductor L2, a capacitor C6, a capacitor C7, a capacitor C8 and a capacitor C9. The first end of the inductor L1 is connected to the first output end of the power module (1), the second end of the inductor L1 is connected to the first end of the inductor L2, the first end of the capacitor C1 is connected to the second end of the inductor L1, the second end of the capacitor C1 is connected to the second output end of the power module (1), the first end of the capacitor C2 is connected to the second end of the inductor L1, the first end of the capacitor C3 is connected to the second end of the capacitor C2, the second end of the capacitor C3 is connected to the second end of the capacitor C1, the first end of the capacitor C4 is connected to the ground, the second end of the capacitor C4 is connected to the second end of the capacitor C2, the first end of the capacitor C5 is connected to the first end of the capacitor C2, the second end of the capacitor C5 is connected to the second end of the capacitor C3, the second end of the inductor L2 is connected to the second end of the capacitor C1, the first end of the capacitor C6 is connected to the third end of the inductor L2, the first end of the capacitor C7 is connected to the second end of the capacitor C6, the fourth end of the inductor L2 is connected to the second end of the capacitor C7, the second end of the capacitor C8 is connected to the ground, the first end of the capacitor C9 is connected to the first end of the capacitor C6, and the second end of the capacitor C9 is connected to the second end of the capacitor C7.

2. The rain sensor electromagnetic radiation device for resolving the rain sensor motor 1447M to 1494M of claim 1, wherein: The first end of the motor (3) is connected to the first end of the capacitor C9, and the second end of the motor (3) is connected to the second end of the capacitor C9.

3. The rain sensor electromagnetic radiation device for resolving the rain sensor motor 1447M to 1494M of claim 1, wherein: The filter module (2) further comprises a resistor R1 and a resistor R2, the first end of the resistor R1 is connected to the first end of the capacitor C5, the second end of the resistor R1 is connected to the second end of the capacitor C5, the first end of the resistor R2 is connected to the first end of the capacitor C9, and the second end of the resistor R2 is connected to the second end of the capacitor C9.

4. The rain sensor electromagnetic radiation device for resolving the rain sensor motor 1447M to 1494M of claim 1, wherein: The inductor L1 is a differential mode inductor, the inductor L2 is a common mode inductor, the capacitor C1 is a differential mode capacitor, the capacitor C5 and the capacitor C9 are X capacitors, and the capacitor C2, the capacitor C3, the capacitor C4, the capacitor C6, the capacitor C7 and the capacitor C8 are Y capacitors.

5. The rain sensor electromagnetic radiation device for resolving the wiper motor 1447M to 1494M of claim 1, wherein: The power module (1) outputs direct current.

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