Power control module

Abstract

The invention relates to the field of electricity, and particularly discloses a power control module. The power control module comprises a switching circuit which comprises a first voltage output port and a second voltage output port; the IPM circuit comprises an IPM chip, the IPM chip comprises a first power supply pin, a PWM input pin, a three-phase power supply output pin and a bootstrap capacitor pin, the first power supply pin is connected with the first voltage output port, and the three-phase power supply output pin is connected with the bootstrap capacitor pin through a bootstrap capacitor; and the MCU circuit comprises an MCU chip, the MCU chip comprises a second power supply pin and a PWM output pin, the PWM output pin is connected with the PWM input pin, and the second power supply pin is connected with the second voltage output port. Compared with the prior art, the power control module and the power device provided by the embodiment of the invention have the advantages of improving the control effect on the brushless motor and being relatively low in cost.

Description

Technical Field

[0001] The present invention relates to the field of electricity, and in particular to a power control module. Background Art

[0002] The motors used in household appliances such as soybean milk machines and wall breaking machines are mostly series-excited motors, which mainly include: stator, rotor, end cover, brush holder and brush. The stator includes: stator core and winding. The rotor includes: rotor core, shaft, armature winding and commutator. This series-excited motor is heavy, consumes high power, has high operating temperature and short service life. In addition, it will generate dust and waste during use, which can easily cause the motor to short-circuit.

[0003] In order to solve these technical problems, household appliances such as soybean milk machines and wall breaking machines using brushless motors have emerged. However, the existing control circuits have poor control effects on brushless motors and are costly. Summary of the invention

[0004] The object of the present invention is to provide a power control module which can improve the control effect of a brushless motor and has low cost.

[0005] In a first aspect, the present invention provides a power control module, comprising: a switching circuit, the switching circuit comprising a first voltage output port and a second voltage output port; an IPM circuit, the IPM circuit comprising an IPM chip, the IPM chip comprising a first power pin, a PWM input pin, a three-phase power output pin, and a bootstrap capacitor pin, the first power pin is connected to the first voltage output port, the three-phase power output pin is used to output three-phase electricity, and the three-phase power output pin is connected to the bootstrap capacitor pin via a bootstrap capacitor; an MCU circuit, the MCU circuit comprising an MCU chip, the MCU chip comprising a second power pin and a PWM output pin, the PWM output pin is connected to the PWM input pin, and the second power pin is connected to the second voltage output port.

[0006] Compared with the related art, in the power control module provided in the embodiment of the present application, the three-phase power output pin of the IPM chip is connected to the bootstrap capacitor pin via the bootstrap capacitor, thereby realizing the multiplexing of the three-phase power output pin and the bootstrap capacitor pin in the IPM chip, which can reduce the number of IPM chip pins and reduce the cost of the IPM chip, thereby reducing the cost of the entire power control module; in addition, the MCU chip is connected to the IPM chip, and the PWM output pin of the MCU chip is connected to the PWM input pin of the IPM chip. The IPM chip is controlled by the MCU chip, which can improve the three-phase power output stability of the IPM chip and improve the overall control effect of the power control module.

[0007] In an optional embodiment, the power control module further includes: an EMC circuit, the EMC circuit including a power input port and a power output port, the power input port is used to connect to an external power supply, and the power output port is connected to the switch circuit. The EMC circuit is connected to the external power supply, and the EMC circuit can filter out electromagnetic interference signals in the external power supply, thereby reducing the electromagnetic interference of the external power supply to the power control module.

[0008] In an optional embodiment, the EMC circuit includes a power input circuit, a power output circuit, and a common mode inductor connecting the power input circuit and the power output circuit; the power input circuit includes a power input port, the power input port includes a neutral port and a live port, the power input circuit also includes a first input parallel branch, a second input parallel branch, and a third input parallel branch connected in parallel between the neutral port and the live port, the first input parallel branch includes a varistor, the second input parallel branch includes a first discharge resistor and a second discharge resistor connected in series with each other, The third input parallel branch includes a first X capacitor; the power output circuit includes a power output port, the power output port includes an output polarity terminal PN and an output non-polarity terminal PL, the power output circuit also includes a first output parallel branch, a second output parallel branch, and a third output parallel branch connected in parallel between the output polarity terminal PN and the output non-polarity terminal PL, the first output parallel branch includes a first Y capacitor and a second Y capacitor connected in series, the second output parallel branch includes a second X capacitor, and the third output parallel branch includes a third Y capacitor and a fourth Y capacitor connected in series.

[0009] In an optional embodiment, the power control module further includes: a rectifier filter circuit, the rectifier filter circuit includes a rectifier input port and a rectifier output port, the rectifier input port is connected to the power output port, and the rectifier output port is connected to the IPM circuit. The rectifier filter circuit can be provided to rectify and filter the external power supply, thereby reducing the impact of external power supply fluctuations on the power control module.

[0010] In an optional embodiment, the rectifier and filter circuit includes: a rectifier circuit and a relay circuit; the rectifier circuit includes a rectifier bridge connected between the rectifier input port and the rectifier output port, a charging resistor connected between the rectifier bridge and the rectifier input port, a first rectifier parallel branch and a second rectifier parallel branch connected between the rectifier bridge and the rectifier output port, the first rectifier parallel branch includes a discharge resistor, and the second rectifier parallel branch includes a filter energy storage capacitor; the relay circuit includes a relay, a transistor, a first bias resistor, and a second bias resistor, one end of the relay is connected to the collector of the transistor, and the other end is connected to the first voltage output port, the base of the transistor is connected to the first bias resistor, the second bias resistor is connected between the base and the emitter of the transistor, and the relay short-circuits the charging resistor when the filter energy storage capacitor is fully charged.

[0011] In an optional embodiment, the switching circuit includes: a transformer, a switching power supply chip, a first voltage-stabilizing transistor, and a second voltage-stabilizing transistor; the transformer includes a primary winding, a secondary winding and a tertiary winding, the primary winding is connected to the switching power supply chip, the secondary winding is connected to the pre-stabilization voltage input terminal of the first voltage-stabilizing transistor, the post-stabilization voltage output terminal of the first voltage-stabilizing transistor is the first voltage output port, the first voltage output port is connected to the pre-stabilization voltage input terminal of the second voltage-stabilizing transistor, and the post-stabilization voltage output terminal of the second voltage-stabilizing transistor is the second voltage output port.

[0012] In an optional embodiment, the MCU chip further includes: an IPM chip temperature detection pin and an interrupt input pin, and the IPM chip includes a temperature output pin; the IPM chip temperature detection pin, the interrupt input pin, and the temperature output pin are connected to each other. An IPM chip temperature detection pin and an interrupt input pin are set in the MCU chip, and the IPM chip temperature detection pin is connected to the IPM chip temperature detection pin of the IPM chip. The MCU chip can monitor the temperature of the IPM chip through the IPM chip temperature detection pin, and when the temperature is too high, the IPM chip interrupt can be controlled through the interrupt input pin, thereby realizing temperature control of the IPM chip.

[0013] In an optional embodiment, the MCU chip further includes: a power supply voltage detection pin; the power control module further includes: a power supply voltage detection circuit; the power supply voltage detection circuit includes a first detection power supply input port, a rectifier diode, a voltage divider resistor, a filter capacitor, and a detection signal output port, wherein the first detection power supply input port is used to connect to a power supply, the rectifier diode, the voltage divider resistor, and the filter capacitor are connected between the first detection power supply input port and the detection signal output port, and the detection signal output port is connected to the power supply voltage detection pin. A power supply voltage detection pin is set in the MCU chip, and the power supply voltage detection pin is connected to the power supply voltage detection circuit, so that the MCU chip can monitor the power supply voltage.

[0014] In an optional embodiment, the MCU chip further includes: a power supply zero-crossing detection pin; the power control module further includes: a power supply zero-crossing detection circuit; the power supply zero-crossing detection circuit includes a first detection power supply input port and a detection optocoupler, the second detection power supply input port is used to connect to a power supply, and the detection optocoupler is connected to the second voltage output port and the power supply zero-crossing detection pin. A power supply zero-crossing detection pin is set in the MCU chip, and the power supply zero-crossing detection pin is connected to the power supply zero-crossing detection circuit, so that the MCU chip can monitor the stability of the power supply voltage.

[0015] In an optional embodiment, the MCU chip also includes: a heating control pin; the power control module also includes: a heating drive circuit; the heating drive circuit includes a thyristor rectifier and a drive optocoupler, the thyristor rectifier is used to be connected to the heating power main line, the drive optocoupler is connected to the heating control pin and the second voltage output port, and the drive optocoupler controls the thyristor rectifier to be turned on / off under the control of the heating control pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a schematic diagram of the structure of the power control module provided in the first embodiment of the present application;

[0018] Figure 2 A circuit diagram of a switch circuit in a power control module provided in Embodiment 1 of the present application;

[0019] Figure 3A circuit diagram of an IPM circuit in a power control module provided in Embodiment 1 of the present application;

[0020] Figure 4 A circuit diagram of an MCU circuit in a power control module provided in Embodiment 1 of the present application;

[0021] Figure 5 A schematic diagram of the structure of a power control module provided in Embodiment 2 of the present application;

[0022] Figure 6 A circuit diagram of an EMC circuit in a power control module provided in Embodiment 2 of the present application;

[0023] Figure 7 A circuit diagram of a rectifier and filter circuit in a power control module provided in Embodiment 2 of the present application;

[0024] Figure 8 A circuit diagram of a power supply voltage detection circuit in a power control module provided in Embodiment 2 of the present application;

[0025] Fig. 9 A circuit diagram of a power supply zero-crossing detection circuit in a power control module provided in Embodiment 2 of the present application;

[0026] Fig.10 A circuit diagram of a heating control circuit in a power control module provided in Embodiment 2 of the present application;

[0027] Fig.11 A schematic diagram of the structure of a power device including a power control module provided in an embodiment of the present application;

[0028] Fig.12 The figure is a schematic diagram of the structure of another power device including the power control module provided in the embodiment of the present application. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0033] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0034] Embodiment 1 of the present invention provides a power control module, such as Figure 1 As shown, it includes: a switch circuit 100, an IPM (Intelligent Power Module) circuit 200, and an MCU (Microcontroller Unit) circuit 300.

[0035] Specifically, the switch circuit 100 includes a first voltage output port 101 and a second voltage output port 102. The switch circuit 100 may be connected to an external power source and convert the external power source into a first voltage and a second voltage output, the first voltage may be output via the first voltage output port 101, and the second voltage may be output via the second voltage output port 102. In some embodiments of the present application, the voltage values ​​of the first voltage and the second voltage may be different, for example, the voltage value of the first voltage may be 15V, the voltage value of the second voltage may be 5V, etc.

[0036] Further, in some embodiments of the present application, Figure 2 As shown, the switch circuit 100 includes a transformer T301, and the transformer T301 includes a primary winding ( Figure 2 The middle pins are 1 and 3), the secondary winding ( Figure 2 The winding with pins 4 and 5) and the third winding ( Figure 2 The pin 3 of the primary winding is connected to the switch power chip U301, the switch power chip U301 is connected to the first voltage output port, a 15V voltage is input through the first voltage output port, and the pin 1 of the primary winding is connected to the external power supply KG. In some embodiments of the present application, Figure 2 As shown, electronic components such as diode D301, resistor R302, electrolytic capacitor EC302, resistor R303, capacitor C302, diode D303, resistor R306, capacitor C304, electrolytic capacitor EC305, resistor R310, diode D305, capacitor C306, etc. may also be included.

[0037] Further, such as Figure 2 As shown, the pin 4 of the secondary winding is grounded, the pin 5 of the secondary winding is connected to the pre-stabilization voltage input terminal 1 (Vin) of the first voltage stabilizing transistor U302 (L7815), and the post-stabilization voltage output terminal 3 (Vout) of the first voltage stabilizing transistor U302 is the first voltage output port. Figure 2 The figure shows a schematic diagram of the case where the first voltage is +15V. The first voltage output port (+15V) is connected to the voltage input terminal 1 (Vin) before voltage regulation of the second voltage stabilizing transistor U304 (L7805), and the voltage output terminal 3 (Vout) after voltage regulation of the second voltage stabilizing transistor U304 is the second voltage output port. Figure 2 FIG. 4 is a schematic diagram showing a case where the second voltage is +5V. In addition, in some embodiments of the present application, Figure 2 As shown, electronic components such as electrolytic capacitors EC303, EC304, EC306, capacitor C307, diode D304, etc. may also be included.

[0038] like Figure 2 As shown, pin 7 of the third winding is connected to the third voltage output port (+5V_G), and the third voltage output port is grounded (5V_GND). The third voltage output port can output a safe voltage such as +5V for light-emitting diode IC301 and other electronic components to emit light. In actual application, the voltage output by the third voltage output port can power exposed electronic devices such as the external indicator light of the device. Since the third voltage output port is grounded (5V_GND), the third voltage is a safe voltage, which can improve the safety of electronic equipment. In addition, Figure 2 As shown, electronic components such as resistors R301, R304, R305, R307, R308, R309, and R311, capacitors C301, C303, and C305, an electrolytic capacitor EC301, and diodes D302 and U303 may also be included.

[0039] Specifically, Figure 3 As shown, the IPM circuit includes an IPM chip U401. The IPM chip U401 includes a first power supply pin (pin 1), PWM input pins (pins 12, 13, 17, 18, 22, and 23), three-phase power supply output pins (pins 2, 4, and 6), and bootstrap capacitor pins (pins 14, 19, and 25). Figure 3 As shown, the first power supply pin is connected to the first voltage output port of +15V, and capacitors C401, C406, and electrolytic capacitor EC401 can also be connected between the first voltage output port of +15V and the first power supply pin. The three-phase power supply output pin is connected to the microcontroller MOT401 for outputting three-phase electricity, and the three-phase power supply output pin is connected to the bootstrap capacitor pin via the bootstrap capacitor (C402, C407, C412).

[0040] In addition, if Figure 3 As shown, the IPM chip also includes a temperature output pin (pin 9), which is connected to a pull-up resistor R407, and the other end of the pull-up resistor R407 is connected to a +5V pull-up voltage. When the temperature of the IPM chip is maintained at 25°C-100°C, the output voltage P_IPM_FO is 4.25V-3.1V, and the output voltage P_IPM_FO is output to the MCU chip. When the output voltage P_IPM_FO is lower than 3.1V, the MCU chip controls the IPM chip to interrupt and suspend operation, thereby realizing temperature monitoring of the IPM chip. Figure 3 When the voltage value of the pull-up voltage is +5V, the resistance value of the pull-up resistor R407 can be 6.8KΩ. In some other embodiments of the present application, when the voltage value of the pull-up voltage is 3.3V, the resistance value of the pull-up resistor can be 4.7KΩ, etc.

[0041] like Figure 3 As shown, in some embodiments of the present application, the IPM chip U401 includes pins 1 to 25. In addition to the pins 1, 2, 4, 6, 9, 12, 13, 17, 18, 22, 23, 14, 19, and 25 that have been specifically described above, the functions of the other pins are described as follows: Pins 3, 5, and 7: External current sampling resistor R409 at the negative end of the brushless motor DC output; Pin 8: Module power ground; Pins 11, 16, and 21: Power supply, which can be 15V in this embodiment; Pin 10: Module overcurrent input, once overcurrent is detected, the IGBT is turned off internally. In addition, capacitors C404, C405, C409, C410, C413, C414, C415, and C416, resistors R401, R402, R403, R404, R405, R406, R408, and R409 and other components may also be included.

[0042] Specifically, Figure 4 As shown, the MCU circuit may include an MCU chip MCU501. The MCU chip MCU501 includes a second power supply pin (pin 17) and PWM output pins (pins 13, 14, 15, 18, 19, and 20). The PWM output pins are connected to Figure 2 The PWM input pin of the IPM chip shown is connected, and the second power supply pin is connected to the second voltage output port.

[0043] In addition, the MCU chip MCU501 also includes: an IPM chip temperature detection pin (pin 32) and an interrupt input pin (pin 26). The IPM chip temperature detection pin and the interrupt input pin are both connected to Figure 2The temperature output pin of the IPM chip shown is connected. An IPM chip temperature detection pin and an interrupt input pin are set in the MCU chip. The IPM chip temperature detection pin is connected to the IPM chip temperature detection pin of the IPM chip. The MCU chip can monitor the temperature of the IPM chip through the IPM chip temperature detection pin. When the temperature is too high, the IPM chip interrupt can be controlled through the interrupt input pin, thereby realizing the temperature control of the IPM chip.

[0044] like Figure 4 As shown, the MCU chip 501 includes pins 2 to 32. The functions of each pin are as follows:

[0045] Pin 2: Zero-crossing signal input terminal, which is a 50Hz square wave signal and is mainly used as a reference signal for heating thyristor control.

[0046] Pin 3: The input terminal for the dry burning protection of the heating tube;

[0047] Pin 6: bus voltage detection terminal;

[0048] Pin 8: Mains voltage detection terminal;

[0049] Pin 9: Brushless motor current positive input terminal, built-in op amp same direction terminal;

[0050] Pin 10: Brushless motor current reverse input terminal, built-in op amp reverse terminal;

[0051] Pin 11: Current amplifier output terminal;

[0052] Pin 12: Brushless motor current AD input terminal, the signal is filtered from pin 11 to pin 12 through RC (R504, C504, R505);

[0053] Pin 13: U-phase lower tube PWM output;

[0054] Pin 14: U-phase upper tube PWM output;

[0055] Pin 15: V-phase lower tube PWM output;

[0056] Pin 16: Chip ground terminal;

[0057] Pin 17: chip power supply terminal;

[0058] Pin 18: V-phase upper tube PWM output;

[0059] Pin 19: W phase lower tube PWM output;

[0060] Pin 20: W phase upper tube PWM output;

[0061] Pin 25: Heating thyristor control;

[0062] Pin 26: Overcurrent, overtemperature, and phase loss interrupt input;

[0063] Pin 29: Serial port transmitter;

[0064] Pin 29: Serial port receiving end;

[0065] Pin 31: Buzzer output terminal;

[0066] Pin 32: IPM temperature detection terminal.

[0067] In some embodiments of the present application, the MCU chip MCU501 can be a 32-bit ARM processor with a 72MHz built-in clock, supporting single-cycle 32-bit multiplication by 32-bit multiplication instructions, and can quickly process speed control, position detection, and safety protection in the brushless motor control process. It has a built-in op amp comparator, an independent 6-channel PWM output, and a PWM frequency set to 16KHz, which takes into account electromagnetic noise and the switching loss of the internal IGBT, and the peripheral circuit is simple.

[0068] Compared with the related art, in the power control module provided in the first embodiment of the present application, the three-phase power output pin of the IPM chip is connected to the bootstrap capacitor pin via the bootstrap capacitor, thereby realizing the multiplexing of the three-phase power output pin and the bootstrap capacitor pin in the IPM chip, which can reduce the number of IPM chip pins and reduce the cost of the IPM chip, thereby reducing the cost of the entire power control module; in addition, the MCU chip is connected to the IPM chip, and the PWM output pin of the MCU chip is connected to the PWM input pin of the IPM chip. The IPM chip is controlled by the MCU chip, which can improve the three-phase power output stability of the IPM chip and improve the overall control effect of the power control module.

[0069] A second embodiment of the present invention provides a power control module, such as Figure 5 As shown, it includes: a switch circuit 100, an IPM circuit 200, an MCU circuit 300, an EMC (Electromagnetic Compatibility) circuit 400, a rectifier and filter circuit 500, a power supply voltage detection circuit 600, a power supply zero-crossing detection circuit 700, and a heating control circuit 800.

[0070] Understandably, Figure 5What is shown is an example description of a specific embodiment of the present application. In other embodiments of the present application, it may also include only the EMC circuit 400, the rectifier and filter circuit 500, the power supply voltage detection circuit 600, the power supply zero-crossing detection circuit 700, and a partial circuit or a single circuit in the heating control circuit 800. For example, it may include only the EMC circuit 400, or include the EMC circuit 400 and the rectifier and filter circuit 500, etc.

[0071] The EMC circuit 400 includes a power input port 401 and a power output port 402 . The power input port 401 is used to connect to an external power source, and the power output port 402 is connected to the switch circuit 100 .

[0072] Specifically, Figure 6 As shown, the EMC circuit 400 may include: a power input circuit 401, a power output circuit 402, and a common mode inductor L101 connecting the power input circuit 401 and the power output circuit 402. The power input circuit 401 includes a power input port, the power input port includes a neutral port ACL and a live port CAN, and PE is grounded. The power input circuit 401 also includes a first input parallel branch, a second input parallel branch, and a third input parallel branch connected in parallel between the neutral port and the live port. The first input parallel branch includes a varistor VDR101, the second input parallel branch includes a first discharge resistor R101 and a second discharge resistor R102 connected in series, and the third input parallel branch includes a first X capacitor CX101.

[0073] The power output circuit 402 includes power output ports PL and PN, the power output port includes an output polarity terminal PN and an output non-polarity terminal PL, the power output circuit also includes a first output parallel branch, a second output parallel branch, and a third output parallel branch connected in parallel between the output polarity terminal PN and the output non-polarity terminal PL, the first output parallel branch includes a first Y capacitor CY101 and a second Y capacitor CY104 connected in series, the second output parallel branch includes a second X capacitor CX102, and the third output parallel branch includes a third Y capacitor CY102 and a fourth Y capacitor CY103 connected in series.

[0074] Among them, Figure 7 As shown, the rectifier filter circuit 500 includes a rectifier input port and a rectifier output port. The rectifier input port is connected to the power output ports PL and PN, and the rectifier output port BUS is connected to the first pin of the IPM chip.

[0075] like Figure 7As shown, the rectifier filter circuit 500 includes: a rectifier circuit 501 and a relay circuit 502. The rectifier circuit 501 includes a rectifier bridge U201 connected between the rectifier input ports PL, PN and the rectifier output port BUS, a charging resistor R203 connected between the rectifier bridge U201 and the rectifier input port 2, a first rectifier parallel branch and a second rectifier parallel branch connected between the rectifier bridge U201 and the rectifier output port BUS, the first rectifier parallel branch includes a discharge resistor R204, and the second rectifier parallel branch includes a filter energy storage capacitor EC201.

[0076] The relay circuit 502 includes a relay D201, a transistor Q201, a first bias resistor R201, and a second bias resistor R202. One end 3 of the relay D201 is connected to the collector C of the transistor, and the other end 4 is connected to the first voltage output port +15V. The base B of the transistor is connected to the first bias resistor R201, and the second bias resistor R202 is connected between the base B and the emitter E of the transistor. The relay D201 short-circuits the charging resistor R203 when the filter energy storage capacitor EC201 is fully charged. Since the capacitance of the filter energy storage capacitor EC201 is relatively large, generally several hundred microfarads, the filter energy storage capacitor EC201 will generate a large current when it is suddenly powered on. The charging resistor R203 can be set to charge the circuit for protection. After the filter energy storage capacitor EC201 is fully charged, the large current disappears. At this time, short-circuiting the charging resistor 203 can improve the work efficiency and also increase the service life of the charging resistor 203.

[0077] like Figure 8 , Figure 4 As shown, the power supply voltage detection circuit 600 includes a first detection power supply input port PL and PN, rectifier diodes D701 and D702, voltage dividing resistors R701, R702, R704, a filter capacitor C701, and a detection signal output port P_OVP_HEAT_AD. The first detection power supply input port PL and PN are used to connect to the power supply. The rectifier diodes D701 and D702, voltage dividing resistors R701, R702, R704, and the filter capacitor C701 are connected between the first detection power supply input port PL and PN and the detection signal output port P_OVP_HEAT_AD. The detection signal output port P_OVP_HEAT_AD is connected to the power supply voltage detection pin P_OVP_HEAT_AD (pin 8) of the MCU chip.

[0078] like Fig. 9 , Figure 4As shown, the power zero-crossing detection circuit 700 includes a first detection power input port PL, PN and a detection optical coupler U801, the second detection power input port PL, PN is used to connect to the power supply, and the detection optical coupler U801 is connected to the second voltage output port +5V and the power zero-crossing detection pin P_ZO (pin 2) of the MCU chip. In addition, as Fig. 9 As shown, the power supply zero-crossing detection circuit 700 may further include components such as resistors R801, R802, R803, R804, a capacitor C801, and a diode D801.

[0079] like Fig.10 , Figure 4 As shown, the heating drive circuit 800 includes a thyristor rectifier TRC601 and a driving optical coupler U601. The thyristor rectifier TRC601 is used to connect to the main line of the heating power supply. The driving optical coupler U601 is connected to the heating control pin P_HEAT (pin 25) of the MCU chip and the second voltage output port +5V. The driving optical coupler U601 controls the thyristor rectifier TRC601 to turn on / off under the control of the heating control pin P_HEAT. When the P_HEAT pin of the MCU chip outputs a low level, the driving optical coupler U601 is turned on, and the current flows from the bias resistor R601 into the 6-4 pins of the driving optical coupler U601, and then into the trigger pin (pin 3) of the thyristor rectifier TRC601, and flows out from the first anode (pin 1) of the thyristor. The thyristor rectifier TRC601 is triggered and turned on, and the heating plate starts to work and heat.

[0080] Compared with the related art, in the power control module provided in the second embodiment of the present application, an EMC circuit is provided to be connected to an external power supply, and the EMC circuit can filter out the electromagnetic interference signal in the external power supply, thereby reducing the electromagnetic interference of the external power supply to the power control module; a rectifier and filter circuit is provided to rectify and filter the external power supply, thereby reducing the influence of external power supply fluctuation on the power control module; a power supply voltage detection pin is provided in the MCU chip, and the power supply voltage detection pin is connected to the power supply voltage detection circuit, so that the MCU chip can monitor the power supply voltage; a power supply zero-crossing detection pin is provided in the MCU chip, and the power supply zero-crossing detection pin is connected to the power supply zero-crossing detection circuit, so that the MCU chip can monitor the stability of the power supply voltage.

[0081] Please refer to Fig.11 , Fig.11 FIG. 1 shows a power device including a power control module provided in an embodiment of the present application. Fig.11 As shown, the power device includes: a three-phase brushless motor 901 and a power control module 902 as provided in the above-mentioned embodiment, the power control module 902 includes an IPM circuit, the IPM chip in the IPM circuit includes a three-phase power output pin, and the three-phase brushless motor 901 is connected to the three-phase power output pin of the IPM circuit.

[0082] In some other application scenarios of the power control module provided in the embodiment of the present application, when the power control module 902 includes a heating drive circuit as described in the above embodiment, Fig.12 As shown, the power device may further include a heating element 903. The heating element 903 is connected to a silicon controlled rectifier in the heating drive circuit.

[0083] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A power control module, characterized in that: include: A switch circuit, the switch circuit comprising a first voltage output port and a second voltage output port; An IPM circuit, the IPM circuit comprising an IPM chip, the IPM chip comprising a first power pin, a PWM input pin, a three-phase power output pin, and a bootstrap capacitor pin, the first power pin being connected to the first voltage output port, the three-phase power output pin being used to output three-phase electricity, and the three-phase power output pin being connected to the bootstrap capacitor pin via a bootstrap capacitor; An MCU circuit, wherein the MCU circuit comprises an MCU chip, wherein the MCU chip comprises a second power supply pin and a PWM output pin, wherein the PWM output pin is connected to the PWM input pin, and the second power supply pin is connected to the second voltage output port.

2. The power control module according to claim 1, characterized in that: The power control module also includes: The EMC circuit comprises a power input port and a power output port, wherein the power input port is used to connect to an external power source, and the power output port is connected to the switch circuit.

3. The power control module according to claim 2, characterized in that: The EMC circuit includes a power input circuit, a power output circuit, and a common mode inductor connecting the power input circuit and the power output circuit; The power input circuit comprises a power input port, the power input port comprises a neutral port and a live port, the power input circuit further comprises a first input parallel branch, a second input parallel branch, and a third input parallel branch connected in parallel between the neutral port and the live port, the first input parallel branch comprises a varistor, the second input parallel branch comprises a first discharge resistor and a second discharge resistor connected in series with each other, and the third input parallel branch comprises a first X capacitor; The power output circuit includes a power output port, the power output port includes an output polarity terminal PN and an output non-polarity terminal PL, the power output circuit also includes a first output parallel branch, a second output parallel branch, and a third output parallel branch connected in parallel between the output polarity terminal PN and the output non-polarity terminal PL, the first output parallel branch includes a first Y capacitor and a second Y capacitor connected in series, the second output parallel branch includes a second X capacitor, and the third output parallel branch includes a third Y capacitor and a fourth Y capacitor connected in series.

4. The power control module according to claim 2, characterized in that: The power control module also includes: The rectifier and filter circuit comprises a rectifier input port and a rectifier output port, wherein the rectifier input port is connected to the power supply output port, and the rectifier output port is connected to the IPM circuit.

5. The power control module according to claim 4, characterized in that: The rectification and filtering circuit comprises: a rectification circuit and a relay circuit; The rectifier circuit includes a rectifier bridge connected between the rectifier input port and the rectifier output port, a charging resistor connected between the rectifier bridge and the rectifier input port, a first rectifier parallel branch and a second rectifier parallel branch connected between the rectifier bridge and the rectifier output port, the first rectifier parallel branch includes a discharge resistor, and the second rectifier parallel branch includes a filter energy storage capacitor; The relay circuit includes a relay, a transistor, a first bias resistor, and a second bias resistor. One end of the relay is connected to the collector of the transistor, and the other end is connected to the first voltage output port. The base of the transistor is connected to the first bias resistor, and the second bias resistor is connected between the base and emitter of the transistor. The relay short-circuits the charging resistor when the filtering energy storage capacitor is fully charged.

6. The power control module according to claim 1, characterized in that: The switch circuit includes: a transformer, a switch power chip, a first voltage-stabilizing transistor, and a second voltage-stabilizing transistor; The transformer includes a primary winding, a secondary winding and a tertiary winding, the primary winding is connected to the switching power supply chip, the secondary winding is connected to the pre-stabilization voltage input terminal of the first voltage-stabilizing transistor, the post-stabilization voltage output terminal of the first voltage-stabilizing transistor is the first voltage output port, the first voltage output port is connected to the pre-stabilization voltage input terminal of the second voltage-stabilizing transistor, and the post-stabilization voltage output terminal of the second voltage-stabilizing transistor is the second voltage output port.

7. The power control module according to claim 1, characterized in that: The MCU chip also includes: an IPM chip temperature detection pin and an interrupt input pin, and the IPM chip includes a temperature output pin; The IPM chip temperature detection pin, the interrupt input pin, and the temperature output pin are connected to each other.

8. The power control module according to claim 1, characterized in that: The MCU chip also includes: a power supply voltage detection pin; The power control module also includes: a power supply voltage detection circuit; The power supply voltage detection circuit includes a first detection power supply input port, a rectifier diode, a voltage-dividing resistor, a filter capacitor, and a detection signal output port. The first detection power supply input port is used to connect to a power supply. The rectifier diode, the voltage-dividing resistor, and the filter capacitor are connected between the first detection power supply input port and the detection signal output port. The detection signal output port is connected to the power supply voltage detection pin.

9. The power control module according to claim 1, characterized in that: The MCU chip also includes: a power supply zero-crossing detection pin; The power control module also includes: a power supply zero-crossing detection circuit; The power supply zero-crossing detection circuit includes a first detection power supply input port and a detection optocoupler, the second detection power supply input port is used to connect to the power supply, and the detection optocoupler is connected to the second voltage output port and the power supply zero-crossing detection pin.

10. The power control module according to claim 1, characterized in that: The MCU chip also includes: a heating control pin; The power control module further includes: a heating drive circuit; The heating drive circuit includes a thyristor rectifier and a driving optocoupler, the thyristor rectifier is used to be connected to the main line of the heating power supply, the driving optocoupler is connected to the heating control pin and the second voltage output port, and the driving optocoupler controls the thyristor rectifier to be turned on / off under the control of the heating control pin.

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