A protective component

Abstract

The present invention provides a protection component, which includes: a bus power distribution input module, a first electromagnetic protection module 210, a first filtering protection module, a first surge protection module and a connector; the bus power distribution input module is used to receive a first power supply voltage signal, the first electromagnetic protection module 210 performs electromagnetic protection on the first power supply voltage signal to prevent the first power supply voltage signal from being too high, the first filtering protection module performs filtering protection on the first power supply voltage signal after receiving the first power supply voltage signal, and transmits the first power supply voltage signal after filtering protection to the first surge protection module, the first surge protection module performs surge protection on the first power supply voltage signal and then sends the first power supply voltage signal to the connector, so that the connector finally transmits the first power supply voltage signal to the external device that needs protection, thereby solving the problem in the prior art that the surge generated by the power supply voltage signal will also affect the reliability and precision of the device.

Description

Technical Field

[0001] The present invention relates to the field of electronic technology, and in particular to a protective component. Background Art

[0002] Some precision devices utilize protective components to protect their power supply voltage signals during use, ensuring their reliability and precision. Existing technologies typically only provide electromagnetic protection and filtering to ensure reliable and precise operation. However, surges generated by the power supply voltage signal can also affect device reliability and precision. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the present invention provides a protection component, which solves the problem in the prior art that surges generated by power supply voltage signals may also affect the reliability and precision of devices.

[0004] The present invention provides a protection component, which includes: a bus power distribution input module, a first electromagnetic protection module, a first filtering protection module, a first surge protection module and a connector; the bus power distribution input module is connected to the first electromagnetic protection module, and is used to receive a first power supply voltage signal input from the outside and send the first power supply voltage signal to the first filtering protection module; the first electromagnetic protection module is connected to the first filtering protection, and is used to perform electromagnetic protection on the received first power supply voltage signal, and transmit the first power supply voltage signal after electromagnetic protection to the first filtering protection module; the first filtering protection module is connected to the first surge protection module, and is used to filter and protect the first power supply voltage signal output by the first electromagnetic protection module, and transmit the filtered first power supply voltage signal to the first surge protection module; the first surge protection module is connected to the connector, and is used to perform surge protection on the first power supply voltage signal output by the first filtering module, and send the first power supply voltage signal after surge protection to the connector, so that the connector transmits the first power supply voltage signal to an external device.

[0005] Optionally, the first electromagnetic protection module includes: a first fuse, a first varistor, a second varistor, a third varistor, a second fuse, a first inductor, a second inductor, a first voltage-sensitive diode, a second voltage-sensitive diode and a third voltage-sensitive diode; the first end of the first fuse is connected to the bus power distribution input module, and the second end of the first fuse is respectively connected to the first end of the first varistor and the first end of the second varistor; the second end of the first varistor is respectively connected to the first end of the third varistor and the first end of the second fuse; the second end of the second fuse is connected to the bus power distribution input module; the second end of the second varistor is grounded; the second end of the third varistor is grounded; the first end of the first inductor is connected to the bus power distribution input module, The second end of the first inductor is respectively connected to the first end of the first voltage-distributing diode, the first end of the first voltage-distributing diode and the first filtering protection module; the first end of the second inductor is connected to the bus power distribution input module, and the second end of the second inductor is respectively connected to the first end of the second voltage-distributing diode, the first end of the second voltage-distributing diode and the first filtering protection module; the first end of the first voltage-distributing diode is connected to the bus power distribution input module, and the second end of the first voltage-distributing diode is grounded; the first end of the second voltage-distributing diode is connected to the bus power distribution input module, and the second end of the second voltage-distributing diode is connected to the bus power distribution input module; the first end of the third voltage-distributing diode is connected to the bus power distribution input module, and the second end of the third voltage-distributing diode is grounded.

[0006] Optionally, the first filtering protection module includes: a first capacitor, a first common-mode inductor, a second capacitor, a third capacitor, a fourth capacitor, a second common-mode inductor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor and a ninth capacitor; the first end of the first capacitor is respectively connected to the second end of the first voltage-stabilizing diode and the first end of the first common-mode inductor, and the second end of the first capacitor is respectively connected to the second end of the second voltage-stabilizing diode and the second end of the first common-mode inductor; the two ends of the second capacitor are respectively connected to the third end and the fourth end of the first common-mode inductor; the first end of the third capacitor is connected to the first end of the first common-mode inductor, and the second end of the third capacitor is grounded; the first end of the fourth capacitor is connected to the first end of the first common-mode inductor, and the second end of the fourth capacitor is grounded; the second common-mode inductor is connected to the first end of the fourth capacitor. The first end of the inductor is connected to the third end of the first common-mode inductor, and the second end of the second common-mode inductor is connected to the fourth end of the first common-mode inductor; the two ends of the five capacitors are respectively connected to the third end and the fourth end of the second common-mode inductor; the first end of the sixth capacitor is connected to the third end of the second common-mode inductor, and the second end of the sixth capacitor is grounded; the first end of the seventh capacitor is connected to the fourth end of the second common-mode inductor, and the second end of the seventh capacitor is grounded; the first end of the eighth capacitor is connected to the first end of the sixth capacitor, the second end of the eighth capacitor is connected to the surge suppression module, and the third end of the eighth capacitor is grounded; the first end of the ninth capacitor is connected to the first end of the seventh capacitor, the second end of the ninth capacitor is connected to the surge suppression module, and the third end of the ninth capacitor is grounded.

[0007] Optionally, the protection component also includes: a second filtering protection module and a second electromagnetic protection module; the bus power distribution input module is also connected to the second filtering protection module, and is also used to receive external input CAN signals and transmit the CAN signals to the second filtering protection module; the second filtering protection module is connected to the bus power distribution input module and the second electromagnetic protection module, and is used to filter and protect the received CAN signals, and transmit the filtered and protected CAN signals to the second electromagnetic protection module; the second electromagnetic protection module is connected to the connector, and is used to perform electromagnetic protection on the received CAN signals and send the CAN signals to the connector, so that the connector transmits the CAN signals to external devices.

[0008] Optionally, the second filtering protection module includes: a third common-mode inductor, a tenth capacitor, an eleventh capacitor, a third inductor, a twelfth capacitor and a fourth voltage-stabilizing diode; the first end and the second end of the third common-mode inductor are respectively connected to the bus power distribution input module, the third end of the third common-mode inductor is connected to the first end of the tenth capacitor, and the fourth end of the third common-mode inductor is connected to the first end of the eleventh capacitor; the second end of the tenth capacitor is connected to the second electromagnetic protection module, and the third end of the tenth capacitor is grounded; the second end of the eleventh capacitor is connected to the second electromagnetic protection module, and the third end of the eleventh capacitor is grounded; the first end of the third inductor is connected to the bus power distribution input module, and the second end of the third inductor is connected to the first end of the twelfth capacitor; the second end of the twelfth capacitor is respectively connected to the first end of the fourth voltage-stabilizing diode, and the third end of the twelfth capacitor is grounded; the second end of the fourth voltage-stabilizing diode is grounded.

[0009] Optionally, the protection component also includes: a drive signal input module, a fourth electromagnetic protection module and a fourth filtering protection module; the drive signal input module and the fourth electromagnetic protection module are used to receive an external second power supply voltage signal and transmit the second power supply voltage signal to the fourth electromagnetic protection module; the fourth electromagnetic protection module is connected to the fourth filtering protection module, and is used to perform electromagnetic protection on the received second power supply voltage signal, and transmit the second power supply voltage signal to the fourth filtering protection module; the fourth filtering protection module is connected to the connector, and is used to perform filtering protection on the received second power supply voltage signal, and transmit the second power supply voltage signal after filtering protection to the connector, so that the connector transmits the second power supply voltage signal to the external device.

[0010] Optionally, the fourth electromagnetic protection module includes: a fifth Zener diode, a sixth Zener diode and a seventh Zener diode; the fourth filtering protection module includes: a fourth common-mode inductor, a thirteenth capacitor and a fourteenth capacitor; the two ends of the fifth Zener diode are respectively connected to the drive signal input module; the first end of the sixth Zener diode is connected to the drive signal input module, and the second end of the sixth Zener diode is grounded; the first end of the seventh Zener diode is connected to the drive signal input module, and the second end of the seventh Zener diode is grounded; the first end and the second end of the fourth common-mode inductor are respectively connected to the drive signal input module, the third end of the fourth common-mode inductor is connected to the first end of the thirteenth capacitor, and the fourth end of the fourth common-mode inductor is connected to the first end of the fourteenth capacitor; the second end of the thirteenth capacitor is connected to the connector, and the third end of the thirteenth capacitor is grounded; the second end of the fourteenth capacitor is connected to the connector, and the third end of the fourteenth capacitor is grounded.

[0011] Optionally, the protection component also includes: a fifth electromagnetic protection module and a fifth filtering protection module; the drive signal input module is also connected to the fifth electromagnetic protection module, for receiving an I / O signal and transmitting the I / O signal to the fifth electromagnetic protection module; the fifth electromagnetic protection module is respectively connected to the drive signal input module and the fifth filtering protection module, for performing electromagnetic protection on the received I / O signal, and transmitting the I / O signal to the fifth filtering protection module; the fifth filtering protection module is connected to the connector, for performing filtering protection on the received I / O signal, and transmitting the filtered and protected I / O signal to the connector, so that the connector transmits the I / O signal to an external device.

[0012] Optionally, the fifth electromagnetic protection module includes: an eighth voltage-stabilizing diode and a ninth voltage-stabilizing diode; the fifth filtering protection module includes: a fourth inductor, a fifth inductor, a fifteenth capacitor and a sixteenth capacitor; the first end of the eighth voltage-stabilizing diode is connected to the drive signal input module, and the second end of the eighth voltage-stabilizing diode is grounded; the second end of the ninth voltage-stabilizing diode is connected to the drive signal input module, and the second end of the ninth voltage-stabilizing diode is grounded; the first end of the fourth inductor is connected to the first end of the eighth voltage-stabilizing diode, and the second end of the fourth inductor is connected to the first end of the fifteenth capacitor; the first end of the fifth inductor is connected to the first end of the ninth voltage-stabilizing diode, and the second end of the fifth inductor is connected to the first end of the sixteenth capacitor; the second end of the fifteenth capacitor is connected to the connector, and the third end of the fifteenth capacitor is grounded; the second end of the sixteenth capacitor is connected to the connector, and the third end of the sixteenth capacitor is grounded.

[0013] Optionally, the protection component also includes: a control signal input module, a sixth electromagnetic protection module and a sixth filtering protection module; the control signal input module is also connected to the sixth electromagnetic protection module, for receiving an I / O signal and transmitting the I / O signal to the sixth electromagnetic protection module; the sixth electromagnetic protection module is respectively connected to the drive signal input module and the sixth filtering protection module, for performing electromagnetic protection on the received I / O signal, and transmitting the I / O signal to the sixth filtering protection module; the sixth filtering protection module is connected to the connector, for filtering and protecting the received I / O signal, and transmitting the filtered and protected I / O signal to the connector, so that the connector transmits the I / O signal to an external device.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The bus power distribution input module is used to receive a first power supply voltage signal, and the first electromagnetic protection module performs electromagnetic protection on the first power supply voltage signal to prevent the first power supply voltage signal from being too high. After receiving the first power supply voltage signal, the first filtering protection module performs filtering protection on the first power supply voltage signal, and transmits the first power supply voltage signal after filtering protection to the first surge protection module. After performing surge protection on the first power supply voltage signal, the first surge protection module sends the first power supply voltage signal to the connector, so that the connector finally transmits the first power supply voltage signal to the external device that needs protection. The power supply voltage signal is surge suppressed by the first surge protection module, which solves the problem in the prior art that the surge generated by the power supply voltage signal will also affect the reliability and precision of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A structural diagram of a protection component provided by an embodiment of the present invention;

[0017] Figure 2 A circuit diagram of a protection component provided by an embodiment of the present invention;

[0018] Figure 3 A structural diagram of another protection component provided by an embodiment of the present invention;

[0019] Figure 4 A circuit diagram of another protection component provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 A structural diagram of a protection component provided by an embodiment of the present invention, such as Figure 1 As shown, the protection assembly includes: a bus power distribution input module 100, a first electromagnetic protection module 210, a first filtering protection module 310, a first surge protection module 400 and a connector 500;

[0022] The bus power distribution input module 100 is connected to the first electromagnetic protection module 210 and is configured to receive a first power supply voltage signal input from an external source and send the first power supply voltage signal to the first filtering protection module 310 ;

[0023] The first electromagnetic protection module 210 is connected to the first filtering protection module, and is used to perform electromagnetic protection on the received first power supply voltage signal, and transmit the electromagnetically protected first power supply voltage signal to the first filtering protection module 310;

[0024] The first filtering and protection module 310 is connected to the first surge protection module 400 and is configured to filter and protect the first power supply voltage signal output by the first electromagnetic protection module 210, and transmit the filtered first power supply voltage signal to the first surge protection module 400;

[0025] The first surge protection module 400 is connected to the connector 500, and is used to perform surge protection on the first power supply voltage signal output by the first filtering module, and send the first power supply voltage signal after surge protection to the connector 500, so that the connector 500 transmits the first power supply voltage signal to an external device.

[0026] In this embodiment, the bus power distribution input module 100 is used to receive a first power supply voltage signal. The first electromagnetic protection module 210 performs electromagnetic protection on the first power supply voltage signal to prevent the first power supply voltage signal from being excessively high. After receiving the first power supply voltage signal, the first filtering protection module 310 performs filtering protection on the first power supply voltage signal and transmits the filtered and protected first power supply voltage signal to the first surge protection module 400. After performing surge protection on the first power supply voltage signal, the first surge protection module 400 transmits the first power supply voltage signal to the connector 500, so that the connector 500 ultimately transmits the first power supply voltage signal to the external device requiring protection. The surge suppression of the power supply voltage signal by the first surge protection module 400 solves the problem, existing in the prior art, that surges generated by the power supply voltage signal can also affect the reliability and precision of the device.

[0027] It should be noted that the specific model used by the bus power distribution input module 100 is ZH852502H12B8GPN, and the specific model used by the connector 500 is HJ5L-1003BTLD1.

[0028] Figure 2 A circuit diagram of a protection component provided by an embodiment of the present invention, such as Figure 2As shown, the first electromagnetic protection module 210 includes: a first fuse F1, a first varistor R1, a second varistor R2, a third varistor R3, a second fuse F2, a first inductor L1, a second inductor L2, a first zener diode D1, a second zener diode D2 and a third zener diode D3; the first end of the first fuse F1 is connected to the bus power distribution input module 100, and the second end of the first fuse F1 is respectively connected to the first end of the first varistor R1 and the first end of the second varistor R2; the second end of the first varistor R1 is respectively connected to the first end of the third varistor R3 and the first end of the second fuse F2; the second end of the second fuse F2 is connected to the bus power distribution input module 100; the second end of the second varistor R2 is grounded; the second end of the third varistor R3 is grounded; the first end of the first inductor L1 is connected to the bus power distribution input module 100 The first inductor L1 is connected to the bus power distribution input module 100, and the second end of the first inductor L1 is respectively connected to the first end of the first Zener diode D1, the first end of the first Zener diode D1 and the first filtering protection module 310; the first end of the second inductor L2 is connected to the bus power distribution input module 100, and the second end of the second inductor L2 is respectively connected to the first end of the second Zener diode D2, the first end of the second Zener diode D2 and the first filtering protection module 310; the first end of the first Zener diode D1 is connected to the bus power distribution input module 100, and the second end of the first Zener diode D1 is grounded; the first end of the second Zener diode D2 is connected to the bus power distribution input module 100, and the second end of the second Zener diode D2 is connected to the bus power distribution input module 100; the first end of the third Zener diode D3 is connected to the bus power distribution input module 100, and the second end of the third Zener diode D3 is grounded.

[0029] In this embodiment, the first fuse F1, the first varistor R1, the second varistor R2, the third varistor R3, and the second fuse F2 constitute the first level of electromagnetic protection. When the first power supply voltage signal output by the bus power distribution input module 100 is too high, the varistor can clamp the first power supply voltage signal to a certain value to prevent the first power supply voltage signal from being too high. The first inductor L1 and the second inductor L2 filter the first power supply voltage signal. The first Zener diode D1, the second Zener diode D2, and the third Zener diode D3 constitute the second level of electromagnetic protection. If the first level of electromagnetic protection fails, the second level of electromagnetic protection can be used again to ensure the reliability of the electromagnetic protection.

[0030] In another embodiment of the present invention, Figure 2As shown, the first filtering protection module 310 includes: a first capacitor C1, a first common-mode inductor M1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a second common-mode inductor M2, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8 and a ninth capacitor C9; a first end of the first capacitor C1 is respectively connected to the second end of the first voltage-stabilizing diode D1 and the first end of the first common-mode inductor M1, and a second end of the first capacitor C1 is respectively connected to the second end of the second voltage-stabilizing diode D2 and the second end of the first common-mode inductor M1; two ends of the second capacitor C2 are respectively connected to the third end and the fourth end of the first common-mode inductor M1; a first end of the third capacitor C3 is connected to the first end of the first common-mode inductor M1, and a second end of the third capacitor C3 is grounded; a first end of the fourth capacitor C4 is connected to the first end of the first common-mode inductor M1, and a second end of the fourth capacitor C4 is grounded; The first end of the second common-mode inductor M2 is connected to the third end of the first common-mode inductor M1, and the second end of the second common-mode inductor M2 is connected to the fourth end of the first common-mode inductor M1; the two ends of the five capacitors are respectively connected to the third end and the fourth end of the second common-mode inductor M2; the first end of the sixth capacitor C6 is connected to the third end of the second common-mode inductor M2, and the second end of the sixth capacitor C6 is grounded; the first end of the seventh capacitor C7 is connected to the fourth end of the second common-mode inductor M2, and the second end of the seventh capacitor C7 is grounded; the first end of the eighth capacitor C8 is connected to the first end of the sixth capacitor C6, the second end of the eighth capacitor C8 is connected to the surge suppression module, and the third end of the eighth capacitor C8 is grounded; the first end of the ninth capacitor C9 is connected to the first end of the seventh capacitor C7, the second end of the ninth capacitor C9 is connected to the surge suppression module, and the third end of the ninth capacitor C9 is grounded.

[0031] In this embodiment of the present invention, the first power supply voltage signal contains noise. The first filtering and protection module 310 filters out the noise in the first power supply voltage signal, making the output first power supply voltage signal more stable. The first capacitor C1, the first common-mode inductor M1, the second capacitor C2, the third capacitor C3, and the fourth capacitor C4 constitute the first level of filtering and protection. The second common-mode inductor M2, the fifth capacitor C5, the sixth capacitor C6, the seventh capacitor C7, the eighth capacitor C8, and the ninth capacitor C9 constitute the second level of protection. This two-stage filtering and protection provides protection for the first power supply voltage signal.

[0032] Figure 3 A structural diagram of another protection component provided by an embodiment of the present invention, such as Figure 3As shown, the protection component also includes: a second filtering protection module 320 and a second electromagnetic protection module 220; the bus power distribution input module 100 is also connected to the second filtering protection module 320, and is also used to receive an external input CAN signal and transmit the CAN signal to the second filtering protection module 320; the second filtering protection module 320 is connected to the bus power distribution input module 100 and the second electromagnetic protection module 220, and is used to filter and protect the received CAN signal, and transmit the filtered and protected CAN signal to the second electromagnetic protection module 220; the second electromagnetic protection module 220 is connected to the connector 500, and is used to perform electromagnetic protection on the received CAN signal and send the CAN signal to the connector 500, so that the connector 500 transmits the CAN signal to an external device.

[0033] In an embodiment of the present invention, the bus power distribution input module 100 is also used to transmit CAN signals, and the CAN signals are filtered and protected by the second filtering and protection module 320 and the filtered and protected CAN signals are transmitted to the second electromagnetic protection module 220. After receiving the CAN signals, the second electromagnetic protection module 220 performs electromagnetic protection to prevent the CAN signal voltage from being too high and damaging external devices connected to the connector 500.

[0034] In another embodiment of the present invention, Figure 2 As shown, the second filtering protection module 320 includes: a third common-mode inductor M3, a tenth capacitor C10, an eleventh capacitor C11, a third inductor L3, a twelfth capacitor C12 and a fourth voltage-stabilizing diode D4; the first end and the second end of the third common-mode inductor M3 are respectively connected to the bus power distribution input module 100, the third end of the third common-mode inductor M3 is connected to the first end of the tenth capacitor C10, and the fourth end of the third common-mode inductor M3 is connected to the first end of the eleventh capacitor C11; the second end of the tenth capacitor C10 is connected to the second electromagnetic protection module 22 0, the third end of the tenth capacitor C10 is grounded; the second end of the eleventh capacitor C11 is connected to the second electromagnetic protection module 220, and the third end of the eleventh capacitor C11 is grounded; the first end of the third inductor L3 is connected to the bus power distribution input module 100, and the second end of the third inductor L3 is connected to the first end of the twelfth capacitor C12; the second end of the twelfth capacitor C12 is respectively connected to the first end of the fourth voltage-stabilizing diode D4, and the third end of the twelfth capacitor C12 is grounded; the second end of the fourth voltage-stabilizing diode D4 is grounded.

[0035] In this embodiment, the CAN signal needs to be input through three channels, connected through the first and second ends of the third common-mode inductor M3 and the first end of the third inductor L3, to receive the input CAN signal and filter and protect the CAN signal, so that the filtered and protected CAN signal is transmitted to the second electromagnetic protection module 220. It should be noted that the specific chip model used by the second electromagnetic protection module 220 is LC0C-06.

[0036] like Figure 3 As shown, in another embodiment of the present invention, the protection component also includes: a drive signal input module 600, a fourth electromagnetic protection module 240 and a fourth filtering protection module 340; the drive signal input module and the fourth electromagnetic protection module 240 are used to receive an external second power supply voltage signal and transmit the second power supply voltage signal to the fourth electromagnetic protection module 240; the fourth electromagnetic protection module 240 is connected to the fourth filtering protection module 340, and is used to perform electromagnetic protection on the received second power supply voltage signal, and transmit the second power supply voltage signal to the fourth filtering protection module 340; the fourth filtering protection module 340 is connected to the connector 500, and is used to perform filtering protection on the received second power supply voltage signal, and transmit the second power supply voltage signal after filtering protection to the connector 500, so that the connector 500 transmits the second power supply voltage signal to the external device.

[0037] In this embodiment, the drive signal input module 600 is used to receive an external second power supply voltage signal, perform electromagnetic protection on the second power supply voltage signal through the fourth electromagnetic protection module 240, and transmit the electromagnetically protected second power supply voltage signal to the fourth filtering protection module 340, perform filtering protection on the second power supply voltage signal through the fourth filtering protection module 340, and transmit the protected second power supply voltage signal to an external device.

[0038] Figure 4 A circuit diagram of another protection component provided by an embodiment of the present invention, such as Figure 4As shown, the fourth electromagnetic protection module 240 includes: a fifth zener diode D5, a sixth zener diode D6 and a seventh zener diode D7; the fourth filtering protection module 340 includes: a fourth common-mode inductor M4, a thirteenth capacitor C13 and a fourteenth capacitor C14; the two ends of the fifth zener diode D5 are respectively connected to the drive signal input module 600; the first end of the sixth zener diode D6 is connected to the drive signal input module 600, and the second end of the sixth zener diode D6 is grounded; the first end of the seventh zener diode D7 is connected to the drive signal input module 600 , the second end of the seventh zener diode D7 is grounded; the first end and the second end of the fourth common-mode inductor M4 are respectively connected to the drive signal input module 600, the third end of the fourth common-mode inductor M4 is connected to the first end of the thirteenth capacitor C13, and the fourth end of the fourth common-mode inductor M4 is connected to the first end of the fourteenth capacitor C14; the second end of the thirteenth capacitor C13 is connected to the connector 500, and the third end of the thirteenth capacitor C13 is grounded; the second end of the fourteenth capacitor C14 is connected to the connector 500, and the third end of the fourteenth capacitor C14 is grounded.

[0039] In this embodiment, electromagnetic protection is provided by the fifth, sixth, and seventh Zener diodes D5, D6, and D7 to prevent excessive voltage in the second power supply voltage signal output by the drive signal input module 600. The second power supply voltage signal output by the fourth common-mode filter inductor, the thirteenth capacitor C13, and the fourteenth capacitor C14 is filtered to prevent noise from being generated in the output second power supply voltage signal.

[0040] In another embodiment of the present invention, Figure 3 As shown, the protection component also includes: a fifth electromagnetic protection module 250 and a fifth filtering protection module 350; the drive signal input module 600 is also connected to the fifth electromagnetic protection module 250, for receiving an I / O signal and transmitting the I / O signal to the fifth electromagnetic protection module 250; the fifth electromagnetic protection module 250 is respectively connected to the drive signal input module 600 and the fifth filtering protection module 350, for performing electromagnetic protection on the received I / O signal and transmitting the I / O signal to the fifth filtering protection module 350; the fifth filtering protection module 350 is connected to the connector 500, for performing filtering protection on the received I / O signal and transmitting the filtered and protected I / O signal to the connector 500, so that the connector 500 transmits the I / O signal to an external device.

[0041] In this embodiment, the driving signal input module 600 receives an I / O signal. It should be noted that the type of the driving signal is an I / O signal. The fifth electromagnetic protection module 250 performs electromagnetic protection on the received I / O signal, and transmits the I / O signal to the fifth filtering protection module 350. The fifth filtering protection module 350 performs electromagnetic protection on the I / O signal, and transmits the electromagnetically protected I / O signal to the connector 500, so that the connector 500 transmits the I / O signal to an external device.

[0042] In another embodiment of the present invention, Figure 4 As shown, the fifth electromagnetic protection module 250 includes: an eighth voltage stabilizing diode D8 and a ninth voltage stabilizing diode D9; the fifth filtering protection module 350 includes: a fourth inductor L4, a fifth inductor L5, a fifteenth capacitor C15 and a sixteenth capacitor C16; the first end of the eighth voltage stabilizing diode D8 is connected to the drive signal input module 600, and the second end of the eighth voltage stabilizing diode D8 is grounded; the second end of the ninth voltage stabilizing diode D9 is connected to the drive signal input module 600, and the second end of the ninth voltage stabilizing diode D9 is grounded; the first end of the fourth inductor L4 is connected to the drive signal input module 600, and the second end of the ninth voltage stabilizing diode D9 is grounded; The first end of the fourth inductor L4 is connected to the first end of the fifteenth capacitor C15; the first end of the fifth inductor L5 is connected to the first end of the ninth voltage-stabilizing diode D9, and the second end of the fifth inductor L5 is connected to the first end of the sixteenth capacitor C16; the second end of the fifteenth capacitor C15 is connected to the connector 500, and the third end of the fifteenth capacitor C15 is grounded; the second end of the sixteenth capacitor C16 is connected to the connector 500, and the third end of the sixteenth capacitor C16 is grounded.

[0043] In this embodiment, the eighth and ninth zener diodes D8 and D9 form a fifth electromagnetic protection filter module, providing electromagnetic protection to the module and preventing excessive voltage on the output I / O signals. The fourth inductor L4, the fifth inductor L5, the fifteenth and sixteenth capacitors C15 and C16 form a fifth filtering and protection module 350, filtering and protecting the I / O signals output by the fifth electromagnetic protection module 250 to ensure stable I / O signals output to the connector 500.

[0044] In another embodiment of the present invention, Figure 3As shown, the protection component also includes: a control signal input module 700, a sixth electromagnetic protection module 260 and a sixth filtering protection module 360; the control signal input module 700 is also connected to the sixth electromagnetic protection module 260, for receiving an I / O signal and transmitting the I / O signal to the sixth electromagnetic protection module 260; the sixth electromagnetic protection module 260 is respectively connected to the drive signal input module 600 and the sixth filtering protection module 360, for performing electromagnetic protection on the received I / O signal and transmitting the I / O signal to the sixth filtering protection module 360; the sixth filtering protection module 360 ​​is connected to the connector 500, for performing filtering protection on the received I / O signal and transmitting the filtered and protected I / O signal to the connector 500, so that the connector 500 transmits the I / O signal to an external device.

[0045] In this embodiment, a control signal is received via the control signal input module 700. It should be noted that the control signal is an I / O signal. The sixth electromagnetic protection module 260 provides electromagnetic protection for the received I / O signal to prevent the voltage of the I / O signal from being too high, potentially damaging external devices connected to the connector 500. The sixth filtering protection module 360 ​​filters the received I / O signal to prevent interference from noise in the received I / O signal. It should be noted that the circuit structure of the sixth electromagnetic protection module 260 is the same as that of the fifth electromagnetic protection module 250, and the circuit structure of the sixth filtering protection module 360 ​​is the same as that of the fifth filtering protection module 350, and thus will not be further described herein.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A protective component, characterized in that: The protection assembly includes: a bus power distribution input module, a first electromagnetic protection module, a first filtering protection module, a first surge protection module and a connector; The bus power distribution input module is connected to the first electromagnetic protection module, and is configured to receive a first power supply voltage signal input from an external source and send the first power supply voltage signal to the first filtering protection module; The first electromagnetic protection module is connected to the first filtering protection, and is used to perform electromagnetic protection on the received first power supply voltage signal, and transmit the first power supply voltage signal after electromagnetic protection to the first filtering protection module; the first electromagnetic protection module includes: a first fuse, a first varistor, a second varistor, a third varistor, a second fuse, a first inductor, a second inductor, a first Zener diode, a second Zener diode, and a third Zener diode; The first end of the first fuse is connected to the bus power distribution input module, and the second end of the first fuse is connected to the first end of the first varistor and the first end of the second varistor respectively; The second end of the first varistor is connected to the first end of the third varistor and the first end of the second fuse respectively; The second end of the second fuse is connected to the bus power distribution input module; The second terminal of the second varistor is grounded; The second end of the third varistor is grounded; The first end of the first inductor is connected to the bus power distribution input module, and the second end of the first inductor is connected to the first end of the first voltage regulator diode, the first end of the first voltage regulator diode and the first filtering protection module respectively; The first end of the second inductor is connected to the bus power distribution input module, and the second end of the second inductor is connected to the first end of the second voltage stabilizing diode, the first end of the second voltage stabilizing diode and the first filtering protection module respectively; A first end of the first voltage stabilizing diode is connected to the bus power distribution input module, and a second end of the first voltage stabilizing diode is grounded; The first end of the second voltage stabilizing diode is connected to the bus power distribution input module, and the second end of the second voltage stabilizing diode is connected to the bus power distribution input module; The first end of the third voltage stabilizing diode is connected to the bus power distribution input module, and the second end of the third voltage stabilizing diode is grounded; The first filtering protection module is connected to the first surge protection module, and is configured to filter and protect the first power supply voltage signal output by the first electromagnetic protection module, and transmit the filtered first power supply voltage signal to the first surge protection module; The first surge protection module is connected to the connector and is used to perform surge protection on the first power supply voltage signal output by the first filtering module, and send the first power supply voltage signal after surge protection to the connector, so that the connector transmits the first power supply voltage signal to an external device.

2. A protective assembly according to claim 1, characterized in that: The first filtering protection module includes: a first capacitor, a first common-mode inductor, a second capacitor, a third capacitor, a fourth capacitor, a second common-mode inductor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, and a ninth capacitor; The first end of the first capacitor is connected to the second end of the first voltage stabilizing diode and the first end of the first common-mode inductor respectively, and the second end of the first capacitor is connected to the second end of the second voltage stabilizing diode and the second end of the first common-mode inductor respectively; Two ends of the second capacitor are respectively connected to the third end and the fourth end of the first common-mode inductor; A first end of the third capacitor is connected to the first end of the first common-mode inductor, and a second end of the third capacitor is grounded; A first end of the fourth capacitor is connected to the first end of the first common-mode inductor, and a second end of the fourth capacitor is grounded; The first end of the second common-mode inductor is connected to the third end of the first common-mode inductor, and the second end of the second common-mode inductor is connected to the fourth end of the first common-mode inductor; The two ends of the five capacitors are respectively connected to the third end and the fourth end of the second common-mode inductor; A first end of the sixth capacitor is connected to the third end of the second common-mode inductor, and a second end of the sixth capacitor is grounded; A first end of the seventh capacitor is connected to the fourth end of the second common-mode inductor, and a second end of the seventh capacitor is grounded; A first end of the eighth capacitor is connected to the first end of the sixth capacitor, a second end of the eighth capacitor is connected to the surge suppression module, and a third end of the eighth capacitor is grounded; A first end of the ninth capacitor is connected to the first end of the seventh capacitor, a second end of the ninth capacitor is connected to the surge suppression module, and a third end of the ninth capacitor is grounded.

3. A protective assembly according to claim 1, characterized in that: The protection component further includes: a second filtering protection module and a second electromagnetic protection module; The bus power distribution input module is also connected to the second filtering and protection module, and is further used to receive an external input CAN signal and transmit the CAN signal to the second filtering and protection module; The second filtering and protection module is connected to the bus power distribution input module and the second electromagnetic protection module, and is used to filter and protect the received CAN signal, and transmit the filtered and protected CAN signal to the second electromagnetic protection module; The second electromagnetic protection module is connected to the connector, and is used to perform electromagnetic protection on the received CAN signal and send the CAN signal to the connector, so that the connector transmits the CAN signal to an external device.

4. A protective assembly according to claim 3, characterized in that: The second filtering protection module includes: a third common-mode inductor, a tenth capacitor, an eleventh capacitor, a third inductor, a twelfth capacitor and a fourth voltage-stabilizing diode; The first end and the second end of the third common-mode inductor are respectively connected to the bus power distribution input module, the third end of the third common-mode inductor is connected to the first end of the tenth capacitor, and the fourth end of the third common-mode inductor is connected to the first end of the eleventh capacitor; The second end of the tenth capacitor is connected to the second electromagnetic protection module, and the third end of the tenth capacitor is grounded; The second end of the eleventh capacitor is connected to the second electromagnetic protection module, and the third end of the eleventh capacitor is grounded; The first end of the third inductor is connected to the bus power distribution input module, and the second end of the third inductor is connected to the first end of the twelfth capacitor; The second end of the twelfth capacitor is respectively connected to the first end of the fourth voltage stabilizing diode, and the third end of the twelfth capacitor is grounded; A second terminal of the fourth voltage stabilizing diode is grounded.

5. A protective assembly according to claim 1, characterized in that: The protection component further includes: a driving signal input module, a fourth electromagnetic protection module and a fourth filtering protection module; The driving signal input module and the fourth electromagnetic protection module are configured to receive an external second power supply voltage signal and transmit the second power supply voltage signal to the fourth electromagnetic protection module; The fourth electromagnetic protection module is connected to the fourth filtering protection module, and is configured to perform electromagnetic protection on the received second power supply voltage signal and transmit the second power supply voltage signal to the fourth filtering protection module; The fourth filtering and protection module is connected to the connector, and is used to filter and protect the received second power supply voltage signal, and transmit the filtered and protected second power supply voltage signal to the connector, so that the connector transmits the second power supply voltage signal to an external device.

6. A protective assembly according to claim 5, characterized in that: The fourth electromagnetic protection module includes: a fifth voltage stabilizing diode, a sixth voltage stabilizing diode, and a seventh voltage stabilizing diode; the fourth filtering protection module includes: a fourth common-mode inductor, a thirteenth capacitor, and a fourteenth capacitor; Both ends of the fifth voltage stabilizing diode are respectively connected to the driving signal input module; A first end of the sixth voltage stabilizing diode is connected to the driving signal input module, and a second end of the sixth voltage stabilizing diode is grounded; A first end of the seventh voltage stabilizing diode is connected to the driving signal input module, and a second end of the seventh voltage stabilizing diode is grounded; The first end and the second end of the fourth common-mode inductor are respectively connected to the drive signal input module, the third end of the fourth common-mode inductor is connected to the first end of the thirteenth capacitor, and the fourth end of the fourth common-mode inductor is connected to the first end of the fourteenth capacitor; A second end of the thirteenth capacitor is connected to the connector, and a third end of the thirteenth capacitor is grounded; A second end of the fourteenth capacitor is connected to the connector, and a third end of the fourteenth capacitor is grounded.

7. A protective assembly according to claim 5, characterized in that: The protection component further includes: a fifth electromagnetic protection module and a fifth filtering protection module; The driving signal input module is also connected to the fifth electromagnetic protection module, and is used to receive an I / O signal and transmit the I / O signal to the fifth electromagnetic protection module; The fifth electromagnetic protection module is connected to the drive signal input module and the fifth filtering protection module respectively, and is used to perform electromagnetic protection on the received I / O signal and transmit the I / O signal to the fifth filtering protection module; The fifth filtering and protection module is connected to the connector, and is used to filter and protect the received I / O signal, and transmit the filtered and protected I / O signal to the connector, so that the connector transmits the I / O signal to an external device.

8. A protective assembly according to claim 7, characterized in that: The fifth electromagnetic protection module includes: an eighth voltage stabilizing diode and a ninth voltage stabilizing diode; the fifth filtering protection module includes: a fourth inductor, a fifth inductor, a fifteenth capacitor and a sixteenth capacitor; A first end of the eighth voltage stabilizing diode is connected to the driving signal input module, and a second end of the eighth voltage stabilizing diode is grounded; The second end of the ninth voltage stabilizing diode is connected to the driving signal input module, and the second end of the ninth voltage stabilizing diode is grounded; The first end of the fourth inductor is connected to the first end of the eighth voltage stabilizing diode, and the second end of the fourth inductor is connected to the first end of the fifteenth capacitor; The first end of the fifth inductor is connected to the first end of the ninth voltage stabilizing diode, and the second end of the fifth inductor is connected to the first end of the sixteenth capacitor; The second end of the fifteenth capacitor is connected to the connector, and the third end of the fifteenth capacitor is grounded; A second end of the sixteenth capacitor is connected to the connector, and a third end of the sixteenth capacitor is grounded.

9. A protective assembly according to claim 5, characterized in that: The protection component further includes: a control signal input module, a sixth electromagnetic protection module and a sixth filtering protection module; The control signal input module is also connected to the sixth electromagnetic protection module, and is used to receive an I / O signal and transmit the I / O signal to the sixth electromagnetic protection module; The sixth electromagnetic protection module is connected to the drive signal input module and the sixth filtering protection module respectively, and is used to perform electromagnetic protection on the received I / O signal and transmit the I / O signal to the sixth filtering protection module; The sixth filtering and protection module is connected to the connector, and is used to filter and protect the received I / O signal, and transmit the filtered and protected I / O signal to the connector, so that the connector transmits the I / O signal to an external device.

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