Fault detection system for fan of power supply module

Abstract

A power supply module fan fault detection system comprises a conversion terminal, a fault detection device, a power supply device and a PWM control device. The switching terminal comprises a first group of switching ports, a second group of switching ports, a third group of switching ports and a fourth group of switching ports, the first group of switching ports is connected with a circuit group of the first fan, and the second group of switching ports is connected with a circuit group of the second fan; the power supply device is used for supplying power to the first fan and the second fan; the PWM control device is used for providing PWM control signals for the first fan and the second fan; and the fault detection device is connected between the third group of switching ports and the fourth group of switching ports of the switching terminal so as to be used for automatically detecting faults of the first fan and the second fan and preventing the power supply module from being damaged due to the faults of the fans.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of power module, more specifically, relate to a power module fan fault detection system. BACKGROUND

[0002] Power module generally uses direct current fan to radiate heat, and under normal circumstances, fan line is directly connected to power module for use. The commonly used direct current fan outputs different signals through different terminals to indicate different faults. In some special scenarios, the fan needs to be reconnected, such as connecting multiple fans to the same adapter terminal and then installing them into the power module. However, during this process, fan failure may occur due to cable processing or poor installation. These faults may seriously affect the heat dissipation of the power module, causing damage to the power module.

[0003] Therefore, those skilled in the art need a system that can automatically detect fan failure. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problem in that, in view of the above defects of the prior art, a power module fan fault detection system is provided, which can be used to automatically detect fan failure and prevent the power module from being damaged due to fan failure.

[0005] The utility model solves the technical problem by adopting the following technical scheme: a power module fan fault detection system is constructed, which comprises an adapter terminal, a fault detection device, a power supply device and a PWM control device.

[0006] The adapter terminal comprises a first group of adapter ports, a second group of adapter ports, a third group of adapter ports and a fourth group of adapter ports, the first group of adapter ports is in communication with the third group of adapter ports, and the second group of adapter ports is in communication with the fourth group of adapter ports.

[0007] The first group of adapter ports is connected to the first fan line group, and the second group of adapter ports is connected to the second fan line group.

[0008] The power supply device is connected between the third group of adapter ports and the fourth group of adapter ports of the adapter terminal, and is used to supply power to the first fan and the second fan.

[0009] The PWM control device is connected between the third group of adapter ports and the fourth group of adapter ports of the adapter terminal, and is used to provide PWM control signals for the first fan and the second fan.

[0010] The fault detection device is connected between the third group of adapter ports and the fourth group of adapter ports of the adapter terminal, and is used to detect the faults of the first fan and the second fan.

[0011] In the power module fan fault detection system, the fault detection device includes a current detection device and a voltage detection device;

[0012] The current detection device is connected between the third group of adapter ports and the fourth group of adapter ports of the adapter terminal, for detecting a first fault of the first fan and the second fan;

[0013] The voltage detection device is connected between the third group of adapter ports and the fourth group of adapter ports of the adapter terminal, for detecting a second fault of the first fan and the second fan.

[0014] In the power module fan fault detection system, the line group of the first fan includes a first power line, a first RD alarm line, a first PWM signal line and a first ground line; the line group of the second fan includes a second power line, a second RD alarm line, a second PWM signal line and a second ground line.

[0015] In the power module fan fault detection system, the first group of adapter ports includes a first power port, a first PWM port, a first RD port and a first ground port; the second group of adapter ports includes a second power port, a second PWM port, a second RD port and a second ground port; the third group of adapter ports includes a third power port, a third PWM port, a third RD port and a third ground port; the fourth group of adapter ports includes a fourth power port, a fourth PWM port, a fourth RD port and a fourth ground port.

[0016] In the power module fan fault detection system, the first power line is connected to the first power port, the second power line is connected to the second power port, the first PWM signal line is connected to the first PWM port, the second PWM signal line is connected to the second PWM port, the first RD alarm line is connected to the first RD port, the second RD alarm line is connected to the second RD port, the first ground line is connected to the first ground port, and the second ground line is connected to the second ground port.

[0017] In the power module fan fault detection system, the current detection device includes a first current detection module and a second current detection module;

[0018] The first current detection module is connected between the positive electrode of the power device and the third power port, for detecting a first type fault of the first fan;

[0019] The second current detection module is connected between the positive pole of the power supply device and the fourth power supply port, and is used for detecting the first type of failure of the second fan.

[0020] In the power module fan failure detection system, the voltage detection device includes a first voltage detection module and a second voltage detection module.

[0021] The first voltage detection module is connected between the third RD port and the third ground port, and is used for detecting the second type of failure of the first fan.

[0022] The second voltage detection module is connected between the fourth RD port and the fourth ground port, and is used for detecting the second type of failure of the second fan.

[0023] The power module fan failure detection system of the utility model is connected with the line group of the first fan through the first group of adapter ports of the adapter terminal, and is connected with the line group of the second fan through the second group of adapter ports; the first group of adapter ports of the adapter terminal is communicated with the third group of adapter ports, and the second group of adapter ports is communicated with the fourth group of adapter ports; the power supply device and the PWM control device are used for supplying power and providing PWM control signals for the first fan and the second fan, and then the failure detection device is connected with the third group of adapter ports and the fourth group of adapter ports of the adapter terminal; since the power supply device and the PWM control device control the working of the first fan and the second fan, the failure of the first fan and the second fan can be automatically detected through the failure detection device when the fan fails, and the damage of the power module caused by the failure of the fan is prevented.

[0024] Another technical solution for solving the technical problem of the utility model is to construct a power module fan failure detection system, which includes a first adapter terminal, a second adapter terminal, a third adapter terminal, a control device, and a voltage detection device.

[0025] The first adapter terminal includes a first group of adapter ports, a second group of adapter ports, a third group of adapter ports, and a fourth group of adapter ports; the first group of adapter ports is communicated with the third group of adapter ports, and the second group of adapter ports is communicated with the fourth group of adapter ports.

[0026] The second adapter terminal includes a fifth group of adapter ports, a sixth group of adapter ports, a seventh group of adapter ports, and an eighth group of adapter ports; the fifth group of adapter ports is communicated with the seventh group of adapter ports, and the sixth group of adapter ports is communicated with the eighth group of adapter ports.

[0027] The third adapter terminal comprises a ninth group of adapter ports, a tenth group of adapter ports, an eleventh group of adapter ports, a twelfth group of adapter ports, a thirteenth group of adapter ports, a fourteenth group of adapter ports, a fifteenth group of adapter ports and a sixteenth group of adapter ports; the ninth group of adapter ports is in communication with the eleventh group of adapter ports, and the tenth group of adapter ports is in communication with the twelfth group of adapter ports; the thirteenth group of adapter ports is in communication with the fifteenth group of adapter ports, and the fourteenth group of adapter ports is in communication with the sixteenth group of adapter ports;

[0028] The first group of adapter ports is connected with a line group of a first fan, the second group of adapter ports is connected with a line group of a second fan, the fifth group of adapter ports is connected with a line group of a third fan, and the sixth group of adapter ports is connected with a line group of a fourth fan; the third group of adapter ports is in communication with the ninth group of adapter ports, the fourth group of adapter ports is in communication with the tenth group of adapter ports, the seventh group of adapter ports is in communication with the thirteenth group of adapter ports, and the eighth group of adapter ports is in communication with the fourteenth group of adapter ports;

[0029] The eleventh group of adapter ports, the twelfth group of adapter ports, the fifteenth group of adapter ports and the sixteenth group of adapter ports are connected with the control device;

[0030] The control device is connected with the eleventh group of adapter ports, the twelfth group of adapter ports, the fifteenth group of adapter ports and the sixteenth group of adapter ports of the third adapter terminal, so as to provide power supply and PWM control signals for the first fan, the second fan, the third fan and the fourth fan;

[0031] The voltage detection device is connected with the eleventh group of adapter ports, the twelfth group of adapter ports, the fifteenth group of adapter ports and the sixteenth group of adapter ports of the third adapter terminal, so as to detect open-circuit faults of the first fan, the second fan, the third fan and the fourth fan.

[0032] The power analyzer is connected with the control device, and is used for generating input power of the first fan, the second fan, the third fan and the fourth fan based on the PWM control signal.

[0033] Each group of adapter ports comprises a power supply port, a PWM port, an RD port and a grounding port.

[0034] The first end of the voltage detection device is connected with the RD port of the eleventh group of adapter ports, the RD port of the twelfth group of adapter ports, the RD port of the fifteenth group of adapter ports and the RD port of the sixteenth group of adapter ports; and the second end of the voltage detection device is connected with the ground port of the eleventh group of adapter ports, the ground port of the twelfth group of adapter ports, the ground port of the fifteenth group of adapter ports and the ground port of the sixteenth group of adapter ports.

[0035] The power supply port of the eleventh group of adapter ports, the power supply port of the twelfth group of adapter ports, the power supply port of the fifteenth group of adapter ports and the power supply port of the sixteenth group of adapter ports are connected with the power output port of the control device.

[0036] The PWM port of the eleventh group of adapter ports, the PWM port of the twelfth group of adapter ports, the PWM port of the fifteenth group of adapter ports and the PWM port of the sixteenth group of adapter ports are connected with the PWM output port of the control device.

[0037] The RD port of the eleventh group of adapter ports, the RD port of the twelfth group of adapter ports, the RD port of the fifteenth group of adapter ports and the RD port of the sixteenth group of adapter ports are connected with the RD output port of the control device.

[0038] The ground port of the eleventh group of adapter ports, the ground port of the twelfth group of adapter ports, the ground port of the fifteenth group of adapter ports and the ground port of the sixteenth group of adapter ports are connected with the ground end of the control device.

[0039] The first group of adapter ports of the first adapter terminal is connected with the line group of the first fan, and the second group of adapter ports is connected with the line group of the second fan; the fifth group of adapter ports of the second adapter terminal is connected with the line group of the third fan, and the sixth group of adapter ports is connected with the line group of the fourth fan; the first adapter terminal and the second adapter terminal are respectively communicated with the third adapter terminal, the control device is used for providing power supply and PWM control signals for the first fan, the second fan, the third fan and the fourth fan, then the voltage detection device is connected with the eleventh group of adapter ports, the twelfth group of adapter ports, the fifteenth group of adapter ports and the sixteenth group of adapter ports of the third adapter terminal, and the first fan, the second fan, the third fan and the fourth fan work under the control of the control device, so that when the fan fails, the open circuit failure of the first fan, the second fan, the third fan and the fourth fan can be automatically detected through the voltage detection device, and the power module is prevented from being damaged due to the fan failure. BRIEF DESCRIPTION OF DRAWINGS

[0040] The utility model will be further described below in combination with the drawings and examples, in the drawings:

[0041] Figure 1 It is the principle block diagram of first preferred example of power module fan fault detection system of the utility model;

[0042] Figure 2 It is the circuit diagram of second preferred example of power module fan fault detection system of the utility model;

[0043] Figure 3 It is the structure schematic diagram of preferred example of first fan and second fan of power module fan fault detection system of the utility model are connected respectively switching terminal;

[0044] Figure 4 It is the principle block diagram of third preferred example of power module fan fault detection system of the utility model;

[0045] Figure 5 It is the circuit diagram of fourth preferred example of power module fan fault detection system of the utility model. Specific implementation

[0046] In order to make the purpose, technical scheme and advantage of the utility model more clear and obvious, the utility model is further explained in detail below in combination with the drawings and examples.It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0047] Figure 1 It is the principle block diagram of first preferred example of power module fan fault detection system of the utility model.As shown in Figure 1 The power module fan fault detection system of the utility model includes switching terminal 100, fault detection device 200, power device 400 and PWM control device 500.

[0048] The adapter terminal 100 comprises a first group of adapter ports 110, a second group of adapter ports 120, a third group of adapter ports 130 and a fourth group of adapter ports 140, the first group of adapter ports 110 is in communication with the third group of adapter ports 130, and the second group of adapter ports 120 is in communication with the fourth group of adapter ports 140; the first group of adapter ports 110 is connected with the line group of the first fan 310, and the second group of adapter ports 120 is connected with the line group of the second fan 320. The power supply device 400 is connected between the third group of adapter ports 130 and the fourth group of adapter ports 140, for supplying power to the first fan 310 and the second fan 320; the PWM control device 500 is connected between the third group of adapter ports 130 and the fourth group of adapter ports 140, for providing a PWM control signal to the first fan 310 and the second fan 320; and the fault detection device 200 is connected between the third group of adapter ports 130 and the fourth group of adapter ports 140, for detecting the fault of the first fan 310 and the second fan 320.

[0049] The power module fan fault detection system of the utility model is implemented, the first group of adapter ports of the adapter terminal is connected with the line group of the first fan, and the second group of adapter ports is connected with the line group of the second fan; the first group of adapter ports of the adapter terminal is in communication with the third group of adapter ports, and the second group of adapter ports is in communication with the fourth group of adapter ports; the power supply device and the PWM control device are used for supplying power and providing a PWM control signal to the first fan and the second fan respectively, then the fault detection device is connected with the third group of adapter ports and the fourth group of adapter ports of the adapter terminal, since the power supply device and the PWM control device control the fan to work, when the fan fails, the fault of the first fan and the second fan can be automatically detected directly through the fault detection device, and the power module is prevented from being damaged due to the fan failure.

[0050] In the preferred embodiment of the utility model, the fault detection device comprises a current detection device and a voltage detection device; the current detection device is connected between the third group of adapter ports and the fourth group of adapter ports of the adapter terminal, for detecting the first fault of the first fan and the second fan; and the voltage detection device is connected between the third group of adapter ports and the fourth group of adapter ports of the adapter terminal, for detecting the second fault of the first fan and the second fan.

[0051] The skilled in the art know that the line group of the fan includes a power line, an RD alarm line, a PWM signal line and a ground line. When the power line is open or short circuit failure, the fan does not rotate. When the RD alarm line is open failure, the fan continues to alarm, and when the RD alarm line is short circuit failure, the fan does not alarm. When the PWM signal line is short circuit, the fan does not rotate, and when the PWM signal line is open, the fan rotates full. When the common ground is short circuit or open failure, the fan does not rotate. When the power line is open or short circuit failure, the current of the corresponding power port is 0, and when the RD alarm line is normal, the corresponding RD port is low, and when the RD alarm line is failure, the corresponding RD port is high.

[0052] Therefore, by detecting the power interface in the third group of switching ports corresponding to the first fan through the current detection device, whether the first fan has a power failure can be determined. Similarly, by detecting the power interface in the fourth group of switching ports corresponding to the second fan through the current detection device, whether the second fan has a power failure can be determined. Therefore, by detecting the RD interface in the fourth group of switching ports corresponding to the first fan through the voltage detection device, whether the first fan has an RD line failure can be determined. Similarly, by detecting the RD interface in the fourth group of switching ports corresponding to the second fan through the voltage detection device, whether the second fan has an RD line failure can be determined.

[0053] Therefore, the power module fan failure detection system of the utility model can detect the fan assembly composed of two fans before the fan is installed to the power module, and can detect the power failure and the RD line failure of the two fans at the same time, so that the disassembly of the fan assembly after being installed to the power module is not easy, and the power module fan failure is prevented from being damaged.

[0054] Figure 2 is the circuit diagram of the second preferred embodiment of the power module fan failure detection system of the utility model. Figure 3 is the structural schematic diagram of the preferred embodiment that the first fan and the second fan of the power module fan failure detection system of the utility model are connected to the switching terminal. In Figure 2 In the preferred embodiment shown in the figure, the first fan 310 and the second fan 320 are switched by the switching terminal 100 to form a fan assembly 300. Before the fan assembly is connected to the fan system, the power module fan failure detection system of the utility model can be used to detect the failure of the fan assembly.

[0055] Combined with Figures 1-2 The power module fan failure detection system of the utility model, as shown in the figure, includes a switching terminal 100, a failure detection device 200, a power supply device 400 and a PWM control device 500. As Figure 2As shown, the adapter terminal 100 includes a first group of adapter ports 110, a second group of adapter ports 120, a third group of adapter ports 130 and a fourth group of adapter ports 140, the first group of adapter ports 110 is in communication with the third group of adapter ports 130, and the second group of adapter ports 120 is in communication with the fourth group of adapter ports 140; the first group of adapter ports 110 is connected with the line group of the first fan 310, and the second group of adapter ports 120 is connected with the line group of the second fan 320. The power supply device 400 is connected between the third group of adapter ports 130 and the fourth group of adapter ports 140 for supplying power to the first fan 310 and the second fan 320; the PWM control device 500 is connected between the third group of adapter ports 130 and the fourth group of adapter ports 140 for providing a PWM control signal to the first fan 310 and the second fan 320; and the fault detection device 200 is connected between the third group of adapter ports 130 and the fourth group of adapter ports 140 for detecting faults of the first fan 310 and the second fan 320.

[0056] Further as Figure 2 As shown, the line group of the first fan includes a first power line, a first RD alarm line, a first PWM signal line and a first ground line; and the line group of the second fan includes a second power line, a second RD alarm line, a second PWM signal line and a second ground line. The first group of adapter ports 110 includes a first power port VCC1, a first PWM port PWM1, a first RD port RD1 and a first ground port GND1; the second group of adapter ports 120 includes a second power port VCC2, a second PWM port PWM2, a second RD port RD2 and a second ground port GND2; the third group of adapter ports 130 includes a third power port VCC3, a third PWM port, a third RD port RD3 and a third ground port GND3; and the fourth group of adapter ports 140 includes a fourth power port VCC4, a fourth PWM port, a fourth RD port RD4 and a fourth ground port GND4. The first power line is connected with the first power port VCC1, the second power line is connected with the second power port VCC2, the first PWM signal line is connected with the first PWM port PWM1, the second PWM signal line is connected with the second PWM port PWM2, the first RD alarm line is connected with the first RD port RD1, the second RD alarm line is connected with the second RD port RD2, the first ground line is connected with the first ground port GND1, and the second ground line is connected with the second ground port GND2. As shown, Figure 3 As shown, the first group of adapter ports 110 and the second group of adapter ports 120 can be multiplexed as ports 1-4, and the third group of adapter ports 130 and the fourth group of adapter ports 140 can be multiplexed as ports 5-8.

[0057] The fault detection device 200 comprises a current detection device and a voltage detection device. The current detection device comprises a first current detection module A1 and a second current detection module A2. Here, the first current detection module A1 and the second current detection module A2 can adopt any device capable of current detection, such as an ammeter, a multimeter, a current detection chip or a module. The first current detection module A1 is connected between the positive pole of the power supply device 400 and the third power supply port VCC3, for detecting the first type of fault of the first fan 310. The second current detection module A2 is connected between the positive pole of the power supply device 400 and the fourth power supply port VCC4, for detecting the first type of fault of the second fan 320, i.e. open circuit or short circuit of the power supply line. That is, as described above, when the power supply line is in open circuit or short circuit fault, the current of the corresponding port is 0, so when the current detected by the first current detection module A1 and / or the second current detection module A2 is 0, it can be determined that the first fan 310 and / or the second fan 320 has a power supply line fault during connection to the adapter port.

[0058] Similarly, the voltage detection device comprises a first voltage detection module V1 and a second voltage detection module V2. Here, the first voltage detection module V1 and the second voltage detection module V2 can also adopt any device capable of voltage detection, such as a voltmeter, a multimeter, a voltage detection chip or a module. The first voltage detection module V1 is connected between the third RD port RD3 and the third ground port GND3, for detecting the second type of fault of the first fan 310; the second voltage detection module V2 is connected between the fourth RD port RD4 and the fourth ground port GND4, for detecting the second type of fault of the second fan 320, i.e. open circuit or short circuit fault of the RD line. As described above, when the RD alarm line is normal, the corresponding port is low, and when it is failed, it is high. Therefore, when the first voltage detection module V1 and / or the second voltage detection module V2 detects a high voltage, it can be determined that the first fan 310 and / or the second fan 320 has an RD line fault during connection to the adapter port.

[0059] Therefore, the power module fan fault detection system of the utility model can detect the fault of the fan assembly composed of two fans before the fan is installed in the power module, and can simultaneously detect the power failure and the RD line failure of the two fans, preventing the fan assembly from being difficult to disassemble or even damaged by the power module fan failure after being installed in the power module.

[0060] Figure 4It is the principle block diagram of the third preferred embodiment of the power module fan fault detection system. Figures 1-3 The first fan assembly composed of the first fan 310 and the second fan 320 and the second fan assembly composed of the third fan 330 and the third fan 340 have been detected by the power module fan fault detection system shown in the figure, and when they are combined and installed, since the short circuit fault has been detected in the front, only open circuit fault may exist when they are combined, and the power module fan fault detection system is further provided for detecting the open circuit fault.

[0061] As shown in Figure 4 The power module fan fault detection system comprises a first adapter terminal 100, a second adapter terminal 800, a third adapter terminal 700, a control device 600 and a voltage detection device 700. Figure 4As shown, the first adapter terminal 100 includes a first group of adapter ports 110, a second group of adapter ports 120, a third group of adapter ports 130 and a fourth group of adapter ports 140, the first group of adapter ports 110 is in communication with the third group of adapter ports 130, the second group of adapter ports 120 is in communication with the fourth group of adapter ports 140; the second adapter terminal 800 includes a fifth group of adapter ports 810, a sixth group of adapter ports 820, a seventh group of adapter ports 830 and an eighth group of adapter ports 840, the fifth group of adapter ports 810 is in communication with the seventh group of adapter ports 830, the sixth group of adapter ports 820 is in communication with the eighth group of adapter ports 840. The third adapter terminal 700 includes a ninth group of adapter ports 710, a tenth group of adapter ports 720, an eleventh group of adapter ports 750, a twelfth group of adapter ports 760, a thirteenth group of adapter ports 730, a fourteenth group of adapter ports 740, a fifteenth group of adapter ports 770 and a sixteenth group of adapter ports 780; the ninth group of adapter ports 710 is in communication with the eleventh group of adapter ports 750, the tenth group of adapter ports 720 is in communication with the twelfth group of adapter ports 760; the thirteenth group of adapter ports 730 is in communication with the fifteenth group of adapter ports 770, the fourteenth group of adapter ports 740 is in communication with the sixteenth group of adapter ports 780; the first group of adapter ports 110 is connected with the line group of the first fan 310, the second group of adapter ports 120 is connected with the line group of the second fan 320, the fifth group of adapter ports 810 is connected with the line group of the third fan 330, the sixth group of adapter ports 820 is connected with the line group of the fourth fan 340; the third group of adapter ports 130 is in communication with the ninth group of adapter ports 710, the fourth group of adapter ports 140 is in communication with the tenth group of adapter ports 720, the seventh group of adapter ports 830 is in communication with the thirteenth group of adapter ports 730, the eighth group of adapter ports 840 is in communication with the fourteenth group of adapter ports 740; the eleventh group of adapter ports 750, the twelfth group of adapter ports 760, the fifteenth group of adapter ports 770 and the sixteenth group of adapter ports 780 are connected with the control device 600; the control device 600 is used to provide power supply and PWM control signal for the first fan 310, the second fan 320, the third fan 330 and the fourth fan 340; the voltage detection device 700 is connected with the eleventh group of adapter ports 750, the twelfth group of adapter ports 760, the fifteenth group of adapter ports 770 and the sixteenth group of adapter ports 780 of the third adapter terminal 700, for detecting open circuit failure of the first fan 310, the second fan 320, the third fan 330 and the fourth fan 340.

[0062] The skilled in the art know that the line group of the fan includes a power line, an RD alarm line, a PWM signal line and a ground line; the fan does not rotate when the power line is open or short circuit; the fan continuously alarms when the RD alarm line is open failure, and the fan does not alarm when the RD alarm line is short circuit failure; the fan does not rotate when the PWM signal line is short circuit, and the fan rotates full when the PWM signal line is open; the fan does not rotate when the common ground is short circuit or open failure. The current of the corresponding port is 0 when the power line is open or short circuit failure, and the corresponding port is low when the RD alarm line is normal, and the corresponding port is high when the RD alarm line is failure.

[0063] The voltage detection device detects the level of the RD alarm line in the switching port corresponding to each fan, so that whether the RD line failure occurs can be confirmed. Since the short circuit failure has been detected, only open failure may exist when the combinations are combined, so the voltage detection device 700 can be used to detect the voltage of the RD line port of the eleventh group of switching ports 750, the twelfth group of switching ports 760, the fifteenth group of switching ports 770 and the sixteenth group of switching ports 780, that is, the open failure of the RD line of the first fan 310, the second fan 320, the third fan 330 and the fourth fan 340 can be detected.

[0064] Figure 5 It is the circuit diagram of the fourth preferred embodiment of the power module fan failure detection system of the utility model. In combination with Figures 4-5 It can be known that the power module fan failure detection system includes a first switching terminal 100, a second switching terminal 800, a third switching terminal 700, a control device 600 and a voltage detection device 700. As Figure 4As shown, the first adapter terminal 100 includes a first group of adapter ports 110, a second group of adapter ports 120, a third group of adapter ports 130, and a fourth group of adapter ports 140, the first group of adapter ports 110 being in communication with the third group of adapter ports 130, and the second group of adapter ports 120 being in communication with the fourth group of adapter ports 140; the second adapter terminal 800 includes a fifth group of adapter ports 810, a sixth group of adapter ports 820, a seventh group of adapter ports 830, and an eighth group of adapter ports 840, the fifth group of adapter ports 810 being in communication with the seventh group of adapter ports 830, and the sixth group of adapter ports 820 being in communication with the eighth group of adapter ports 840. The third adapter terminal 700 includes a ninth group of adapter ports 710, a tenth group of adapter ports 720, an eleventh group of adapter ports 750, a twelfth group of adapter ports 760, a thirteenth group of adapter ports 730, a fourteenth group of adapter ports 740, a fifteenth group of adapter ports 770, and a sixteenth group of adapter ports 780; the ninth group of adapter ports 710 being in communication with the eleventh group of adapter ports 750, and the tenth group of adapter ports 720 being in communication with the twelfth group of adapter ports 760; the thirteenth group of adapter ports 730 being in communication with the fifteenth group of adapter ports 770, and the fourteenth group of adapter ports 740 being in communication with the sixteenth group of adapter ports 780; the first group of adapter ports 110 being connected with a line group of the first fan 310, the second group of adapter ports 120 being connected with a line group of the second fan 320, the fifth group of adapter ports 810 being connected with a line group of the third fan 330, and the sixth group of adapter ports 820 being connected with a line group of the fourth fan 340; the third group of adapter ports 130 being in communication with the ninth group of adapter ports 710, the fourth group of adapter ports 140 being in communication with the tenth group of adapter ports 720, the seventh group of adapter ports 830 being in communication with the thirteenth group of adapter ports 730, and the eighth group of adapter ports 840 being in communication with the fourteenth group of adapter ports 740; the eleventh group of adapter ports 750, the twelfth group of adapter ports 760, the fifteenth group of adapter ports 770, and the sixteenth group of adapter ports 780 being connected with the control device 600; the control device 600 being configured to provide power supply and PWM control signals for the first fan 310, the second fan 320, the third fan 330, and the fourth fan 340; the voltage detection device 700 being connected with the eleventh group of adapter ports 750, the twelfth group of adapter ports 760, the fifteenth group of adapter ports 770, and the sixteenth group of adapter ports 780 of the third adapter terminal 700, for detecting open-circuit faults of the first fan 310, the second fan 320, the third fan 330, and the fourth fan 340.

[0065] Further as Figure 5As shown, each group of switching ports respectively includes a power port, a PWM port, an RD port and a ground port. The line group of the first fan includes a first power line, a first RD alarm line, a first PWM signal line and a first ground line; the line group of the second fan includes a second power line, a second RD alarm line, a second PWM signal line and a second ground line; the line group of the third fan includes a third power line, a third RD alarm line, a third PWM signal line and a third ground line; a fourth power line, a fourth RD alarm line, a fourth PWM signal line and a fourth ground line. As Figure 5As shown, the first group of adapter ports 110, the second group of adapter ports 120, the third group of adapter ports 130, the fourth group of adapter ports 140, the fifth group of adapter ports 810, the sixth group of adapter ports 820, the seventh group of adapter ports 830, the eighth group of adapter ports 840, the ninth group of adapter ports 710, the tenth group of adapter ports 720, the eleventh group of adapter ports 750, the twelfth group of adapter ports 760, the thirteenth group of adapter ports 730, the fourteenth group of adapter ports 740, the fifteenth group of adapter ports 770 and the sixteenth group of adapter ports 780 each include a power supply port VCC, a PWM port PWM, an RD port RD, and a ground port GND. The first end of the voltage detection device 700 is connected to the RD port of the eleventh group of adapter ports 750, the RD port of the twelfth group of adapter ports 760, the RD port of the fifteenth group of adapter ports 770 and the RD port of the sixteenth group of adapter ports 780; the second end of the voltage detection device 700 is connected to the ground port of the eleventh group of adapter ports 750, the ground port of the twelfth group of adapter ports 760, the ground port of the fifteenth group of adapter ports 770 and the ground port of the sixteenth group of adapter ports 780. The power supply port of the eleventh group of adapter ports 750, the power supply port of the twelfth group of adapter ports 760, the power supply port of the fifteenth group of adapter ports 770 and the power supply port of the sixteenth group of adapter ports 780 are connected to each other and simultaneously connected to the power output port of the control device 600; the PWM port of the eleventh group of adapter ports 750, the PWM port of the twelfth group of adapter ports 760, the PWM port of the fifteenth group of adapter ports 770 and the PWM port of the sixteenth group of adapter ports 780 are connected to each other and simultaneously connected to the PWM output port of the control device 600; the RD port of the eleventh group of adapter ports 750, the RD port of the twelfth group of adapter ports 760, the RD port of the fifteenth group of adapter ports 770 and the RD port of the sixteenth group of adapter ports 780 are connected to each other and simultaneously connected to the RD output port of the control device 600; the ground port of the eleventh group of adapter ports 750, the ground port of the twelfth group of adapter ports 760, the ground port of the fifteenth group of adapter ports 770 and the ground port of the sixteenth group of adapter ports 780 are connected to each other and simultaneously connected to the ground of the control device 600.

[0066] In Figure 5In the preferred embodiment shown, the power module fan fault detection system can further comprise a power analyzer 910 connected to the control device 600 for generating input power of the first fan 310, the second fan 320, the third fan 330 and the fourth fan 340 based on the PWM control signal. It should be noted that the control device 600 can directly use the control unit of the power module.

[0067] The power module fan fault detection system of the utility model is implemented, the first group of adapter ports of the first adapter terminal is connected with the line group of the first fan, the second group of adapter ports is connected with the line group of the second fan, the fifth group of adapter ports of the second adapter terminal is connected with the line group of the third fan, the sixth group of adapter ports is connected with the line group of the fourth fan, the first adapter terminal, the second adapter terminal are communicated with the third adapter terminal respectively, the control device is used for providing power supply and PWM control signal for the first fan, the second fan, the third fan and the fourth fan, then the voltage detection device is connected with the eleventh group of adapter ports, the twelfth group of adapter ports, the fifteenth group of adapter ports and the sixteenth group of adapter ports of the third adapter terminal, the first fan, the second fan, the third fan and the fourth fan work under the control of the control device, so when the fan fails, the open circuit fault of the first fan, the second fan, the third fan and the fourth fan can be automatically detected by the voltage detection device directly, and the power module is prevented from being damaged due to fan failure.

[0068] Although the utility model is explained through specific embodiments, those skilled in the art should understand that various transformations and equivalent substitutions can be made to the utility model without departing from the scope of the utility model. In addition, various modifications can be made to the utility model for specific situations or materials without departing from the scope of the utility model. Therefore, the utility model is not limited to the disclosed specific embodiments, and should include all implementation manners falling within the scope of the claims of the utility model.

[0069] The above only is the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent substitution and improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model. The above only is the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent substitution and improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A power module fan fault detection system, characterized in that, It includes adapter terminals, fault detection devices, power supply devices, and PWM control devices; The adapter terminal includes a first set of adapter ports, a second set of adapter ports, a third set of adapter ports, and a fourth set of adapter ports. The first set of adapter ports is connected to the third set of adapter ports, and the second set of adapter ports is connected to the fourth set of adapter ports. The first set of adapter ports is connected to the wiring harness of the first fan, and the second set of adapter ports is connected to the wiring harness of the second fan; The power supply device is connected between the third set of adapter ports and the fourth set of adapter ports of the adapter terminal to supply power to the first fan and the second fan; The PWM control device is connected between the third set of adapter ports and the fourth set of adapter ports of the adapter terminal to provide PWM control signals for the first fan and the second fan; The fault detection device is connected between the third set of adapter ports and the fourth set of adapter ports of the adapter terminal to detect faults in the first fan and the second fan.

2. The power module fan fault detection system according to claim 1, characterized in that, The fault detection device includes a current detection device and a voltage detection device; The current detection device is connected between the third set of adapter ports and the fourth set of adapter ports of the adapter terminal to detect a first fault in the first fan and the second fan; The voltage detection device is connected between the third set of adapter ports and the fourth set of adapter ports of the adapter terminal to detect a second fault in the first fan and the second fan.

3. The power module fan fault detection system according to claim 2, characterized in that, The circuit group of the first fan includes a first power line, a first RD alarm line, a first PWM signal line, and a first ground line; the circuit group of the second fan includes a second power line, a second RD alarm line, a second PWM signal line, and a second ground line.

4. The power module fan fault detection system according to claim 3, characterized in that, The first set of adapter ports includes a first power port, a first PWM port, a first RD port, and a first ground port; The second set of adapter ports includes a second power port, a second PWM port, a second RD port, and a second ground port; The third set of adapter ports includes a third power port, a third PWM port, a third RD port, and a third ground port; the fourth set of adapter ports includes a fourth power port, a fourth PWM port, a fourth RD port, and a fourth ground port.

5. The power module fan fault detection system according to claim 4, characterized in that, The first power line is connected to the first power port, the second power line is connected to the second power port, the first PWM signal line is connected to the first PWM port, the second PWM signal line is connected to the second PWM port, the first RD alarm line is connected to the first RD port, the second RD alarm line is connected to the second RD port, the first ground line is connected to the first ground port, and the second ground line is connected to the second ground port.

6. The power module fan fault detection system according to claim 5, characterized in that, The current detection device includes a first current detection module and a second current detection module. The first current detection module is connected between the positive terminal of the power supply device and the third power port to detect a first type of fault in the first fan; The second current detection module is connected between the positive terminal of the power supply device and the fourth power port to detect the first type of fault of the second fan.

7. The power module fan fault detection system according to claim 5, characterized in that, The voltage detection device includes a first voltage detection module and a second voltage detection module; The first voltage detection module is connected between the third RD port and the third ground port to detect a second type of fault in the first fan; The second voltage detection module is connected between the fourth RD port and the fourth ground port to detect a second type of fault in the second fan.

8. A power module fan fault detection system, characterized in that, It includes a first adapter terminal, a second adapter terminal, a third adapter terminal, a control device, and a voltage detection device; The first adapter terminal includes a first set of adapter ports, a second set of adapter ports, a third set of adapter ports, and a fourth set of adapter ports. The first set of adapter ports is connected to the third set of adapter ports, and the second set of adapter ports is connected to the fourth set of adapter ports. The second adapter terminal includes a fifth set of adapter ports, a sixth set of adapter ports, a seventh set of adapter ports, and an eighth set of adapter ports. The fifth set of adapter ports is connected to the seventh set of adapter ports, and the sixth set of adapter ports is connected to the eighth set of adapter ports. The third adapter terminal includes a ninth group of adapter ports, a tenth group of adapter ports, an eleventh group of adapter ports, a twelfth group of adapter ports, a thirteenth group of adapter ports, a fourteenth group of adapter ports, a fifteenth group of adapter ports, and a sixteenth group of adapter ports; The ninth set of adapter ports is connected to the eleventh set of adapter ports, the tenth set of adapter ports is connected to the twelfth set of adapter ports; the thirteenth set of adapter ports is connected to the fifteenth set of adapter ports, and the fourteenth set of adapter ports is connected to the sixteenth set of adapter ports. The first set of adapter ports is connected to the wiring group of the first fan, the second set of adapter ports is connected to the wiring group of the second fan, the fifth set of adapter ports is connected to the wiring group of the third fan, and the sixth set of adapter ports is connected to the wiring group of the fourth fan. The third set of adapter ports is connected to the ninth set of adapter ports, the fourth set of adapter ports is connected to the tenth set of adapter ports, the seventh set of adapter ports is connected to the thirteenth set of adapter ports, and the eighth set of adapter ports is connected to the fourteenth set of adapter ports; The eleventh set of adapter ports, the twelfth set of adapter ports, the fifteenth set of adapter ports, and the sixteenth set of adapter ports are connected to the control device; The control device is connected to the eleventh, twelfth, fifteenth and sixteenth adapter ports of the third adapter terminal to provide power and PWM control signals to the first fan, the second fan, the third fan and the fourth fan; The voltage detection device is connected to the eleventh, twelfth, fifteenth, and sixteenth adapter ports of the third adapter terminal to detect open-circuit faults in the first, second, third, and fourth fans.

9. The power module fan fault detection system according to claim 8, characterized in that, The device further includes a power analyzer connected to the control unit for generating input power for the first fan, the second fan, the third fan, and the fourth fan based on the PWM control signal.

10. The power module fan fault detection system according to claim 9, characterized in that, Each set of adapter ports includes a power port, a PWM port, an RD port, and a ground port; The first end of the voltage detection device is connected to the RD port of the eleventh group of adapter ports, the RD port of the twelfth group of adapter ports, the RD port of the fifteenth group of adapter ports, and the RD port of the sixteenth group of adapter ports. The second end of the voltage detection device is connected to the grounding port of the eleventh group of adapter ports, the grounding port of the twelfth group of adapter ports, the grounding port of the fifteenth group of adapter ports, and the grounding port of the sixteenth group of adapter ports; The power ports of the eleventh, twelfth, fifteenth, and sixteenth sets of adapter ports are connected to the power output port of the control device. The PWM ports of the eleventh, twelfth, fifteenth, and sixteenth sets of adapter ports are connected to the PWM output port of the control device. The RD ports of the eleventh group of adapter ports, the RD ports of the twelfth group of adapter ports, the RD ports of the fifteenth group of adapter ports, and the RD ports of the sixteenth group of adapter ports are connected to the RD output port of the control device. The grounding ports of the eleventh, twelfth, fifteenth, and sixteenth groups of adapter ports are connected to the grounding terminal of the control device.

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