Power module of motor control and heating control, vehicle-mounted compressor and vehicle

Abstract

This application discloses a power module for motor control and heating control, an on-board compressor, and a vehicle, relating to the field of motor and heating control technology. The power module for motor control and heating control is connected to a control chip, a motor, and a resistance heating circuit, and includes: a motor power unit, with a first terminal connected to the control chip and a second terminal connected to the motor, used to control the motor based on motor control signals input from the control chip; and a resistance heating power unit, with a first terminal connected to the control chip, a second terminal connected to the resistance heating circuit, and a third terminal connected to the third terminal of the motor power unit, used to control the resistance heating circuit based on heating control signals input from the control chip. This application reduces the design cost of motor control and heating control.

Description

Technical Field

[0001] This application relates to the field of motor and heating control technology, and in particular to a power module for motor control and heating control, an on-board compressor, and a vehicle. Background Technology

[0002] As motor control and heating technology are increasingly used in various fields, users are also placing higher demands on the design of motor control and heating functions.

[0003] Traditional motor and heating control designs utilize PTC (Positive Temperature Coefficient) heaters for heating. The heating is regulated by adjusting the number of switches or the duty cycle of the onboard PTC heater controller. This requires separate inverter circuits and motor controllers for motor control. This design has significant drawbacks, including the need for external and separate power units for motor and heating control. This results in high design costs for motor and heating control due to the separate placement of these power units (external power devices require separate consideration of installation space and related protection functions).

[0004] The above content is only used to help understand the technical solution of this application and does not represent an admission that the above content is prior art. Summary of the Invention

[0005] The main objective of this application is to provide a power module for motor control and heating control, an on-board compressor, and a vehicle, aiming to solve the technical problem of high design cost for motor control and heating control.

[0006] To achieve the above objectives, this application provides a power module for motor control and heating control. The input terminal of the power module is connected to a control chip, and the output terminal is connected to a motor and a resistance heating circuit. The power module for motor control and heating control includes:

[0007] A motor power unit, wherein a first end of the motor power unit is connected to the control chip, a second end of the motor power unit is connected to the motor, and the motor power unit is used to control the motor based on the motor control signal input by the control chip;

[0008] The resistance heating power unit has a first end connected to the control chip, a second end connected to the resistance heating circuit, and a third end connected to the third end of the motor power unit. The resistance heating power unit is used to control the resistance heating circuit based on the heating control signal input from the control chip.

[0009] In one embodiment, the input terminal of the power module for motor control and heating control includes a first heating drive terminal, a second heating drive terminal, and a third heating drive terminal connected to the control chip; the output terminal of the power module for motor control and heating control includes a first heating power terminal, a second heating power terminal, and a third heating power terminal connected to the resistance heating circuit; and the resistance heating power unit includes:

[0010] The first heating switch tube has its third end connected to the first heating drive end, its first end connected to the third end of the motor power unit, and its second end connected to the first heating power end.

[0011] The second heating switch tube has its third end connected to the second heating drive end, its first end connected to the third end of the motor power unit, and its second end connected to the second heating power end.

[0012] The third heating switch tube has its third end connected to the first heating drive end, its first end connected to the third end of the motor power unit, and its second end connected to the third heating power end.

[0013] In one embodiment, the output terminal of the power module for motor control and heating control further includes a positive power output terminal and a negative power output terminal. The third terminal of the motor power unit is connected to the drain of the first heating switch transistor, the drain of the second heating switch transistor, the drain of the third heating switch transistor, and the positive power output terminal. The source of the first heating switch transistor is connected to the first heating power terminal, the source of the second heating switch transistor is connected to the second heating power terminal, and the source of the third heating switch transistor is connected to the third heating power terminal. Alternatively,

[0014] The third terminal of the motor power unit is connected to the source of the first heating switch tube, the source of the second heating switch tube, the source of the third heating switch tube, and the negative power output terminal. The drain of the first heating switch tube is connected to the first heating power terminal, the drain of the second heating switch tube is connected to the second heating power terminal, and the drain of the third heating switch tube is connected to the third heating power terminal.

[0015] In one embodiment, the input terminal of the power module for motor control and heating control includes a motor drive terminal connected to the control chip, and the output terminal of the power module for motor control and heating control includes a motor power terminal connected to the motor. The motor power unit includes three-phase inverter bridge arms. The first end of each phase of the inverter bridge arm is connected to a motor drive terminal, the second end of each phase of the inverter bridge arm is connected to a motor power terminal, the third end of each phase of the inverter bridge arm is connected to the positive power output terminal of the power module for motor control and heating control, and the fourth end of each phase of the inverter bridge arm is connected to the negative power output terminal of the power module for motor control and heating control.

[0016] In one embodiment, the motor drive terminal includes a first motor drive terminal, a second motor drive terminal, a third motor drive terminal, and a fourth motor drive terminal, and the inverter bridge arm includes:

[0017] The first motor switch transistor has its third terminal connected to the first motor drive terminal, its first terminal connected to the positive power output terminal, and its second terminal connected to the second motor drive terminal.

[0018] The second motor switch has its third terminal connected to the third motor drive terminal, its first terminal connected to the second terminal of the first motor switch, and its second terminal connected to the fourth motor drive terminal and the negative power output terminal.

[0019] In addition, to achieve the above objectives, a vehicle-mounted compressor is also provided. The vehicle-mounted compressor includes a compressor controller, a motor, a compression unit, a resistance heating circuit, and a control chip. The compressor controller is connected to the motor, the resistance heating circuit, and the control chip. The motor is connected to the compression unit. The compressor controller is equipped with the aforementioned power module for motor control and heating control.

[0020] In one embodiment, the power module for motor control and heating control includes a first heating power terminal, a second heating power terminal, a third heating power terminal, and a common power terminal; the resistance heating circuit includes:

[0021] A first series resistor circuit, wherein a first end of the first series resistor circuit is connected to the first heating power terminal, and a second end of the first series resistor circuit is connected to the common power terminal;

[0022] The second series resistor circuit has a first terminal connected to the second heating power terminal and a second terminal connected to the common power terminal.

[0023] The third series resistor circuit has a first end connected to the third heating power terminal and a second end connected to the common power terminal. The first series resistor circuit, the second series resistor circuit, and the third series resistor circuit each include multiple heating resistors connected in parallel.

[0024] In one embodiment, the power module for motor control and heating control further includes a positive power output terminal and a negative power output terminal;

[0025] When the resistance heating power unit in the power module for motor control and heating control is connected to the negative power output terminal, the common power terminal is the positive power output terminal.

[0026] When the resistance heating power unit in the power module for motor control and heating control is connected to the positive power output terminal, the common power terminal is the negative power output terminal.

[0027] In one embodiment, the power module for motor control and heating control includes a first motor power terminal, a second motor power terminal, and a third motor power terminal, wherein the motor includes:

[0028] The first phase input terminal is connected to the first motor power terminal;

[0029] The second phase input terminal is connected to the second motor power terminal;

[0030] The third phase input terminal is connected to the third motor power terminal.

[0031] In addition, to achieve the above objectives, a vehicle is also provided, the vehicle including the aforementioned on-board compressor.

[0032] This application provides a power module for motor control and heating control, applied to a power module for motor control and heating control where the input end is connected to a control chip and the output end is connected to a motor and a resistance heating circuit. The module includes a motor power unit, with a first end connected to the control chip and a second end connected to the motor, used to control the motor based on motor control signals input from the control chip; and a resistance heating power unit, with a first end connected to the control chip, a second end connected to the resistance heating circuit, and a third end connected to the third end of the motor power unit, used to control the resistance heating circuit based on heating control signals input from the control chip. This power module for motor control and heating control achieves this by controlling the motor power... The motor control unit and the resistance heating power unit are integrated and packaged in the power module for motor control and heating control. This allows motor control and heating control to be achieved through the power module, thus avoiding the need for external and separate power units for motor control and heating control (external power devices require separate consideration of installation area and related protection functions). This power module for motor control and heating control improves the functionality of the entire power module. Furthermore, integrating the motor power unit and the resistance heating power unit into the power module reduces the layout area and cost of the power units for motor control and heating control, thereby lowering the design cost of motor control and heating control. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the framework of the power module for motor control and heating control in the first embodiment of this application;

[0034] Figure 2 This is a connection diagram of a power module;

[0035] Figure 3 This is a schematic diagram of one pin of a power module;

[0036] Figure 4 This is another connection diagram of a power module;

[0037] Figure 5 This is another pin diagram of a power module;

[0038] Figure 6 This is a connection diagram of the power module for motor control and heating control in this application;

[0039] Figure 7 This is another connection diagram of the power module for motor control and heating control in this application.

[0040] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0041] Explanation of icon numbers:

[0042] 100. Power module for motor control and heating control; 10. Motor power unit; 20. Resistance heating power unit; 200. Control chip; 300. Motor; 400. Resistance heating circuit; NC. Idle terminal; (U, V, W)HG1. (U phase, V phase, W phase) First motor drive terminal; (U, V, W)HE2. (U phase, V phase, W phase) Second motor drive terminal; TS1P. First resistor terminal; TS1N. Second resistor terminal; TS1. Chip resistor; (U, V, W)LG3, (U phase, V phase, W phase) Third motor drive terminal; (U, V, W)LE2, (U phase, V phase, W phase) Fourth motor drive terminal; G1, First heating drive terminal; G2, Second heating drive terminal; G3, Third heating drive terminal; Q1, First switch transistor; Q2, Second switch transistor; Q3, Third switch transistor; Q4, Fourth switch transistor; Q5, Fifth switch transistor; Q6, Sixth switch transistor; Q7, First heating switch transistor; Q8, Second heating switch transistor;

[0043] Q9, Second heating switch transistor; D1, First diode; D2, Second diode; D3, Third diode; D4, Fourth diode; D5, Fifth diode; D6, Sixth diode; D7, Seventh diode; D8, Eighth diode; D9, Ninth diode; P+ (HV+), Positive power output terminal; P- (HV-), Negative power output terminal; R1, First resistor; R2, Second resistor; U1, Third motor power terminal; U2, Third phase input terminal; V1, Second motor power terminal; V2, Second phase input terminal; W1, First motor power terminal; W2, First phase input terminal; P1, First heating power terminal; P2, Second heating power terminal; P3, Third heating power terminal; RX, Heating resistor; PCT_1, First series resistor sub-circuit; PCT_2, Second series resistor sub-circuit; PCT_3, Third series resistor sub-circuit. Detailed Implementation

[0044] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0045] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0046] A vehicle-mounted PTC heater (hereinafter referred to as a PTC heater) is a special type of heater primarily used for preheating the engine and providing heating for the passenger compartment in low-temperature winter conditions. It is typically used in conjunction with a vehicle-mounted compressor. To adjust its heating power, a vehicle-mounted PTC heater controller (hereinafter referred to as a PTC controller) is provided. The PTC heater's power level is usually adjusted by changing the number of switches or adjusting the duty cycle of the switches. Currently, vehicle-mounted compressors generally use DIP (Dual In-line Package) 29PIM (Power Integrated Module) or IPM (Intelligent Power Module) modules for motor control. The PTC uses external IGBT (Insulated Gate Bipolar Transistor) or MOSFET (Metal Oxide Semiconductor Field Effect Transistor) power devices for independent heating. This results in complex installation of PTC heaters, making them prone to failure. The PCBA controller (a control device that integrates the PTC heater and the PTC controller) is too large, which is not conducive to mass production. The main reason is that the overall control area is increased, and each external power period requires separate consideration of related protection functions.

[0047] Therefore, based on the shortcomings of the above-mentioned methods for implementing motor control and heating functions, this application proposes a power module for motor control and heating control: by integrating the motor power unit and the resistance heating power unit into the power module for motor control and heating control, motor control and heating control can be realized through the power module for motor control and heating control. This avoids the phenomenon that the power units for motor control and heating control need to be external and arranged separately (external power devices need to consider the installation area and related protection functions separately). On the one hand, this power module for motor control and heating control can realize motor control and heating control through the power module for motor control and heating control, thereby improving the functionality of the entire power module. On the other hand, by integrating the motor power unit and the resistance heating power unit into the power module for motor control and heating control, the arrangement area and cost of the power units for motor control and heating control can be reduced, thereby reducing the design cost of motor control and heating control.

[0048] Based on this, embodiments of this application provide a power module for motor control and heating control, referring to... Figure 1 , Figure 1 This is a schematic diagram of the framework of the power module for motor control and heating control in the first embodiment of this application.

[0049] Reference Figure 1 This application provides a power module 100 for motor control and heating control. The input terminal of the power module 100 is connected to a control chip 200, and the output terminal is connected to a motor 300 and a resistance heating circuit 400. The power module 100 for motor control and heating control includes:

[0050] The motor power unit 10 has a first end connected to the control chip 200 and a second end connected to the motor 300. The motor power unit 10 is used to control the motor 300 based on the motor control signal input from the control chip 200.

[0051] The resistance heating power unit 20 has a first end connected to the control chip 200, a second end connected to the resistance heating circuit 400, and a third end connected to the third end of the motor power unit 10. The resistance heating power unit 20 is used to control the resistance heating circuit 400 based on the heating control signal input from the control chip 200.

[0052] For example, refer to Figure 2 , Figure 2 This is a connection diagram of a power module. The package is an IPM (Integrated Device) package, including a Driver IC and 6 power devices, for a total of 29 pins (circles in the diagram). Of these, 21 are low-voltage drive pins (circles on the left), 8 are high-voltage power pins (circles on the right), and one is an unused (NC) pin (the unconnected circle on the right). Further details can be found in [reference needed]. Figure 3 , Figure 3 This is a pinout diagram of a power module, showing the pinout of an IPM. In one embodiment, refer to... Figure 4 , Figure 4 This is another connection diagram for a power module. The package is a PIM (Package In-line) design, containing six power devices with a total of 29 pins, including eight high-voltage pins, one of which is non-critical (NC). Further details can be found in [reference needed]. Figure 5 , Figure 5 This is another pinout diagram of a power module, showing the pinout of an IPM. Therefore, based on the above packaging method, the packaging method of this application is proposed.

[0053] In this embodiment, both the motor power unit 10 and the resistance heating power unit 20 are encapsulated within a motor control and heating control power module 100. This power module 100 can be a PIM (Power Integrated Circuit) as described above. This reduces the area occupied and design complexity of external components for the motor power unit 10 and the resistance heating power unit 20, thereby lowering the design cost of motor control and heating control. Both the motor power unit 10 and the resistance heating power unit 20 contain power devices related to motor and heating control, such as IGBTs and MOSFETs. Furthermore, the encapsulated design incorporates insulation and temperature protection, improving product reliability. On the other hand, since the entire motor control and heating control power module 100 is connected to the control chip 200, control signals can be transmitted to the motor power unit 10 or the resistance heating power unit 20, thereby controlling the motor 300 connected to the motor power unit 10 or the resistance heating circuit 400 connected to the resistance heating power unit 20. That is, the motor 300 is controlled based on the motor control signal input to the control chip 200, or the resistance heating circuit 400 is controlled based on the heating control signal input to the control chip 200. The motor control signal refers to the signal that controls the operation of the motor 300, such as controlling the motor 300 by the duty cycle of the output signal of the control chip 200. The heating control signal refers to the signal that controls the operation of the resistance heating circuit 400, such as controlling the resistance heating circuit 400 by the frequency of the output signal of the control chip 200. Thus, the operation of the motor 300 and the heating of the resistance heating circuit 400 can be controlled based on the control chip 200 and the power module 100 for motor control and heating control, thereby improving the functionality of the power module 100 for motor control and heating control.

[0054] In this embodiment, a power module for motor control and heating control is provided. This module connects its input end to a control chip and its output end to a motor and a resistance heating circuit. It includes a motor power unit, with a first end connected to the control chip and a second end connected to the motor, used to control the motor based on a motor control signal input from the control chip; and a resistance heating power unit, with a first end connected to the control chip, a second end connected to the resistance heating circuit, and a third end connected to the third end of the motor power unit, used to control the resistance heating circuit based on a heating control signal input from the control chip. This motor control and heating control power module controls the motor... The power unit and the resistance heating power unit are integrated and packaged in the power module for motor control and heating control. This allows for motor and heating control to be achieved through the power module, avoiding the need for external and separate power units for motor and heating control (external power devices require separate consideration of installation area and related protection functions). This power module improves the overall functionality of the power module and reduces the layout area and cost of the motor and heating control power units, thus lowering the design cost of motor and heating control.

[0055] Furthermore, based on the first embodiment of the power module for motor control and heating control described above, a second embodiment of the power module for motor control and heating control of this application is proposed, referring to... Figure 6 , Figure 6 This is a connection diagram of the power module for motor control and heating control in this application. The input terminals of the power module 100 for motor control and heating control include a first heating drive terminal G1, a second heating drive terminal G2, and a third heating drive terminal G3 connected to the control chip 200. The output terminals of the power module 100 for motor control and heating control include a first heating power terminal P1, a second heating power terminal P2, and a third heating power terminal P3 connected to the resistance heating circuit 400. The resistance heating power unit 20 includes:

[0056] The first heating switch tube Q7 has its third end connected to the first heating drive end G1, its first end connected to the third end of the motor power unit 10, and its second end connected to the first heating power end P1.

[0057] The second heating switch tube Q8 has its third end connected to the second heating drive end G2, its first end connected to the third end of the motor power unit 10, and its second end connected to the second heating power end P2.

[0058] The third heating switch tube Q9 has its third end connected to the first heating drive end G3, its first end connected to the third end of the motor power unit 10, and its second end connected to the third heating power end P3.

[0059] Furthermore, refer to Figure 7 , Figure 7 This is another connection diagram of the power module for motor control and heating control in this application. The output terminals of the power module 100 for motor control and heating control also include a positive power output terminal P+ and a negative power output terminal P-. The third terminal of the motor power unit 10 is connected to the drain of the first heating switch Q7, the drain of the second heating switch Q8, the drain of the third heating switch Q9, and the positive power output terminal P+. The source of the first heating switch Q7 is connected to the first heating power terminal P1, the source of the second heating switch Q8 is connected to the second heating power terminal P2, and the source of the third heating switch Q9 is connected to the third heating power terminal P3, or...

[0060] The third terminal of the motor power unit 10 is connected to the source of the first heating switch tube Q7, the source of the second heating switch tube Q8, the source of the third heating switch tube Q9, and the negative power output terminal P-. The drain of the first heating switch tube Q7 is connected to the first heating power terminal P1, the drain of the second heating switch tube Q8 is connected to the second heating power terminal P2, and the drain of the third heating switch tube Q9 is connected to the third heating power terminal P3.

[0061] In this embodiment, the input terminals of the power module 100 for motor control and heating control include a first heating drive terminal G1, a second heating drive terminal G2, and a third heating drive terminal G3 connected to the control chip 200. The output terminals of the power module 100 for motor control and heating control include a first heating power terminal P1, a second heating power terminal P2, and a third heating power terminal P3 connected to the resistance heating circuit 400. That is, three idle low-voltage drive pins are selected as heating drive terminals and three idle high-voltage power pins are selected as heating power terminals in the PIM. At this time, the resistance heating power unit 20 The gates (third terminals) of the three heating switching transistors are all connected to a heating drive terminal to enable normal driving of the three heating switching transistors. Simultaneously, the sources or drains of the three heating switching transistors are all connected to a heating power output terminal. At this point, one port remains unconnected. Therefore, depending on the actual situation, it is connected to the positive power output terminal P+ and the negative power output terminal P- of the power module 100 for motor control and heating control. For example, the source of the remaining heating switching transistor will be connected to the negative power output terminal P-, and vice versa, the drain of the remaining heating switching transistor will be connected to the positive power output terminal P+. That is, when the output terminal is the source of the heating switching transistor, the drain of the heating switching transistor will be connected to the positive power output terminal P+; when the output terminal is the drain of the heating switching transistor, the source of the heating switching transistor will be connected to the negative power output terminal P-. This completes the packaging of the resistance heating power unit 20, reducing the design cost of the resistance heating power unit 20.

[0062] Furthermore, based on the first and / or second embodiments of the power module for motor control and heating control described above, a third embodiment of the power module for motor control and heating control of this application is proposed. The input terminal of the power module 100 for motor control and heating control includes a motor drive terminal connected to the control chip 200, and the output terminal of the power module 100 for motor control and heating control includes a motor power terminal connected to the motor 300. The motor power unit 10 includes three-phase inverter bridge arms. The first end of each phase inverter bridge arm is connected to a motor drive terminal, the second end of each phase inverter bridge arm is connected to a motor power terminal, the third end of each phase inverter bridge arm is connected to the positive power output terminal P+ of the power module 100 for motor control and heating control, and the fourth end of each phase inverter bridge arm is connected to the negative power output terminal P- of the power module 100 for motor control and heating control.

[0063] Furthermore, the motor drive terminals (taking the W-phase drive as an example) include the first motor drive terminal WHG1, the second motor drive terminal WHE2, the third motor drive terminal WLG3, and the fourth motor drive terminal WLE4, and the inverter bridge arm includes:

[0064] The first motor switch transistor has its third terminal connected to the first motor drive terminal WHG1, its first terminal connected to the positive power output terminal P+, and its second terminal connected to the second motor drive terminal WHE2.

[0065] The second motor switch transistor has its third terminal connected to the third motor drive terminal WLG3, its first terminal connected to the second terminal of the first motor switch transistor, and its second terminal connected to the fourth motor drive terminal WLE4 and the negative power output terminal P-.

[0066] In this embodiment, the motor power unit 10 includes three inverter bridge arms, each of which has a first motor switching transistor and a second motor switching transistor, such as... Figure 6 In this configuration, the first switch Q1 and the fourth switch Q4 serve as the first and second motor switches, respectively, and are the U-phase of the three-phase input. The second switch Q2 and the fifth switch Q5 also serve as the first and second motor switches, respectively, and are the V-phase of the three-phase input. The third switch Q3 and the sixth switch Q6 serve as the first and second motor switches, respectively, and are the W-phase of the three-phase input. Control is achieved by connecting each phase to four motor drive terminals, and the inverter arms of each phase are interconnected and connected to the negative power output terminal P- and the positive power output terminal P+. Notably, both the negative power output terminal P- and the positive power output terminal P+ can be connected to a single output port, thus saving the use of high-voltage power pins. This completes the packaging of the motor power unit 10, reducing its design cost.

[0067] It is worth noting that the first end of the motor power unit 10 refers to the gate and source of each switching transistor in the inverter bridge arm, the second end of the motor power unit 10 refers to the midpoint of the inverter bridge arm, and the third end of the motor power unit 10 refers to the end of the inverter bridge arm connected to the negative power output terminal P- and the positive power output terminal P+.

[0068] Based on the first, second, and / or third embodiments of the power module for motor control and heating control described above, a first embodiment of an on-board compressor is proposed. The on-board compressor includes a compressor controller, a motor 300, a compression unit, a resistance heating circuit 400, and a control chip 200. The compressor controller is connected to the motor 300, the resistance heating circuit 400, and the control chip 200. The motor 300 is connected to the compression unit. The compressor controller is equipped with the power module 100 for motor control and heating control as described above.

[0069] It is worth noting that, according to the vehicle-mounted compressor of the present invention, the motor power unit and the resistance heating power unit in the vehicle-mounted compressor are integrated and packaged in a power module for motor control and heating control. This allows motor control and heating control to be achieved through the power module, thus avoiding the need for external and separate arrangement of the motor control and heating control power units (external power devices require separate consideration of installation area and related protection functions). This power module for motor control and heating control improves the functionality of the entire power module. Furthermore, integrating the motor power unit and the resistance heating power unit into the power module reduces the layout area and cost of the motor control and heating control power unit, thereby lowering the design cost of motor control and heating control. It is also worth noting that the power module for motor control and heating control can be placed in other locations, such as a fan with heating function. In other words, any hardware or instrument with a motor-controlled inverter circuit and heating requirements can be equipped with the power module for motor control and heating control described in this application. No specific application scenario or instrument is limited here.

[0070] The vehicle-mounted compressor includes a compressor controller, a motor, a compression unit, a resistance heating circuit, and a control chip. The compressor controller can directly integrate the resistance heating circuit and the control chip internally, or it can place the resistance heating circuit and the control chip externally. The arrangement and inclusion relationship between the various components are not limited here.

[0071] Furthermore, based on the first embodiment of the vehicle-mounted compressor of this application described above, a second embodiment of the vehicle-mounted compressor of this application is proposed. The power module 100 for motor control and heating control includes a first heating power terminal P1, a second heating power terminal P2, a third heating power terminal P3, and a common power terminal. The resistance heating circuit 400 includes:

[0072] The first series resistor circuit PCT_1 has its first terminal connected to the first heating power terminal P1 and its second terminal connected to the common power terminal.

[0073] The second series resistor circuit PCT_2 has its first terminal connected to the second heating power terminal P2 and its second terminal connected to the common power terminal.

[0074] The third series resistor circuit PCT_3 has its first terminal connected to the third heating power terminal P3 and its second terminal connected to the common power terminal. The first series resistor circuit PCT_1, the second series resistor circuit PCT_2 and the third series resistor circuit PCT_3 each include multiple parallel heating resistors RX.

[0075] Furthermore, the power module 100 for motor control and heating control also includes a positive power output terminal P+ and a negative power output terminal P-.

[0076] When the resistance heating power unit 20 in the power module 100 for motor control and heating control is connected to the negative power output terminal P-, the common power terminal is the positive power output terminal P+.

[0077] When the resistance heating power unit 20 in the power module 100 for motor control and heating control is connected to the positive power output terminal P+, the common power terminal is the negative power output terminal P-.

[0078] In this embodiment, the resistance heating circuit 400 includes three series-connected resistance sub-circuits. Each series-connected resistance sub-circuit consists of multiple parallel heating resistors RX. As shown in the figure, it consists of three parallel heating resistors RX. The first intersection point after the parallel connection of the heating resistors RX is used as the first end of the series-connected resistance sub-circuit, and the second intersection point after the parallel connection of the heating resistors RX is used as the second end of the series-connected resistance sub-circuit. Because one end of each of the three series-connected resistor circuits is connected to one of the first heating power terminals P1, P2, and P3 respectively, and the other end of each of the three series-connected resistor circuits needs to be connected according to the connection relationship of the resistance heating power unit 20, that is, when the resistance heating power unit 20 in the power module 100 for motor control and heating control is connected to the negative power output terminal P-, the common power terminal is the positive power output terminal P+; when the resistance heating power unit 20 in the power module 100 for motor control and heating control is connected to the positive power output terminal P+, the common power terminal is the negative power output terminal P-, that is, the resistance heating circuit 400 and the resistance heating power unit 20 are connected between the negative power output terminal P- and the positive power output terminal P+. It is worth noting that the resistance heating circuit 400 can be a resonant heating circuit composed of resistors, inductors and capacitors. In this case, regardless of whether the resistance heating power unit 20 is connected to the negative power output terminal P- or the positive power output terminal P+, the common power terminal is the midpoint of any inverter bridge arm. Thus, resonant heating is achieved based on the half-bridge of the inverter bridge arm, and the heating power of the resistance heating circuit 400 can be controlled based on the carrier frequency of the control signal.

[0079] Furthermore, based on the first and / or second embodiments of the vehicle-mounted compressor described above, a third embodiment of the vehicle-mounted compressor of this application is proposed. The power module 100 for motor control and heating control includes a first motor power terminal W1, a second motor power terminal V1, and a third motor power terminal U1. The motor 300 includes:

[0080] The first phase input terminal W2 is connected to the first motor power terminal W1.

[0081] The second phase input terminal V2 is connected to the second motor power terminal V1.

[0082] The third phase input terminal U2 is connected to the third motor power terminal U1.

[0083] In this embodiment, the power module 100 for motor control and heating control includes a first motor power terminal W1, a second motor power terminal V1, and a third motor power terminal U1. These three motor power terminals are then connected to the first phase input terminal W2, the second phase input terminal V2, and the third phase input terminal U2 of the motor to achieve three-phase input of the motor and thus control the motor.

[0084] The device provided in this application can solve the technical problem of high design cost for motor control and heating control. Compared with the prior art, the beneficial effects of the device provided in this application are the same as those of the power module for motor control and heating control provided in the above embodiments, and will not be repeated here.

[0085] This application also provides a vehicle that includes the aforementioned on-board compressor.

[0086] It is worth noting that the vehicle-mounted compressor can be installed on the vehicle to control the motor based on the motor controller, and at the same time control the resonant heating circuit for resonant heating. The vehicle-mounted compressor has a power module for motor control and heating control inside. The motor control and heating control are realized through the power module, thereby improving the functionality of the entire power module. At the same time, the motor power unit and the resistance heating power unit are integrated and packaged in the power module for motor control and heating control, which can reduce the layout area and cost of the power unit for motor control and heating control, thereby reducing the design cost of motor control and heating control.

[0087] It is worth noting that the vehicle may also include other hardware, which will not be described in detail here. The entire vehicle compressor can be installed on the vehicle or on other products, and there are no restrictions on this.

[0088] The device provided in this application can solve the technical problem of high design costs for motor control and heating control. Compared with the prior art, the beneficial effects of the vehicle provided in this application are the same as those of the power module for motor control and heating control provided in the above embodiments, and will not be repeated here.

[0089] The above description is only a part of the embodiments of this application and does not limit the patent scope of this application. All equivalent structural transformations made under the technical concept of this application and using the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this application.

Claims

1. A power module for motor control and heating control, characterized in that, The input terminal of the power module for motor control and heating control is connected to the control chip, and the output terminal of the power module for motor control and heating control is connected to the motor and the resistance heating circuit. The power module for motor control and heating control includes: A motor power unit, wherein a first end of the motor power unit is connected to the control chip, a second end of the motor power unit is connected to the motor, and the motor power unit is used to control the motor based on the motor control signal input by the control chip; The resistance heating power unit has a first end connected to the control chip, a second end connected to the resistance heating circuit, and a third end connected to the third end of the motor power unit. The resistance heating power unit is used to control the resistance heating circuit based on the heating control signal input from the control chip.

2. The power module for motor control and heating control as described in claim 1, characterized in that, The input terminals of the power module for motor control and heating control include a first heating drive terminal, a second heating drive terminal, and a third heating drive terminal connected to the control chip. The output terminals of the power module for motor control and heating control include a first heating power terminal, a second heating power terminal, and a third heating power terminal connected to the resistance heating circuit. The resistance heating power unit includes: The first heating switch tube has its third end connected to the first heating drive end, its first end connected to the third end of the motor power unit, and its second end connected to the first heating power end. The second heating switch tube has its third end connected to the second heating drive end, its first end connected to the third end of the motor power unit, and its second end connected to the second heating power end. The third heating switch tube has its third end connected to the first heating drive end, its first end connected to the third end of the motor power unit, and its second end connected to the third heating power end.

3. The power module for motor control and heating control as described in claim 2, characterized in that, The output terminals of the power module for motor control and heating control also include a positive power output terminal and a negative power output terminal. The third terminal of the motor power unit is connected to the drain of the first heating switch transistor, the drain of the second heating switch transistor, the drain of the third heating switch transistor, and the positive power output terminal. The source of the first heating switch transistor is connected to the first heating power terminal, the source of the second heating switch transistor is connected to the second heating power terminal, and the source of the third heating switch transistor is connected to the third heating power terminal, or... The third terminal of the motor power unit is connected to the source of the first heating switch tube, the source of the second heating switch tube, the source of the third heating switch tube, and the negative power output terminal. The drain of the first heating switch tube is connected to the first heating power terminal, the drain of the second heating switch tube is connected to the second heating power terminal, and the drain of the third heating switch tube is connected to the third heating power terminal.

4. The power module for motor control and heating control as described in claim 1, characterized in that, The input terminal of the power module for motor control and heating control includes a motor drive terminal connected to the control chip, and the output terminal of the power module for motor control and heating control includes a motor power terminal connected to the motor. The motor power unit includes three-phase inverter bridge arms. The first end of each phase inverter bridge arm is connected to a motor drive terminal, the second end of each phase inverter bridge arm is connected to a motor power terminal, the third end of each phase inverter bridge arm is connected to the positive power output terminal of the power module for motor control and heating control, and the fourth end of each phase inverter bridge arm is connected to the negative power output terminal of the power module for motor control and heating control.

5. The power module for motor control and heating control as described in claim 4, characterized in that, The motor drive end includes a first motor drive end, a second motor drive end, a third motor drive end, and a fourth motor drive end, and the inverter bridge arm includes: The first motor switch transistor has its third terminal connected to the first motor drive terminal, its first terminal connected to the positive power output terminal, and its second terminal connected to the second motor drive terminal. The second motor switch has its third terminal connected to the third motor drive terminal, its first terminal connected to the second terminal of the first motor switch, and its second terminal connected to the fourth motor drive terminal and the negative power output terminal.

6. A vehicle-mounted compressor, characterized in that, The vehicle-mounted compressor includes a compressor controller, a motor, a compression unit, a resistance heating circuit, and a control chip. The compressor controller is connected to the motor, the resistance heating circuit, and the control chip. The motor is connected to the compression unit. The compressor controller is equipped with a power module for motor control and heating control as described in any one of claims 1 to 5.

7. The vehicle-mounted compressor as described in claim 6, characterized in that, The power module for motor control and heating control includes a first heating power terminal, a second heating power terminal, a third heating power terminal, and a common power terminal. The resistance heating circuit includes: A first series resistor circuit, wherein a first end of the first series resistor circuit is connected to the first heating power terminal, and a second end of the first series resistor circuit is connected to the common power terminal; The second series resistor circuit has a first terminal connected to the second heating power terminal and a second terminal connected to the common power terminal. The third series resistor circuit has a first end connected to the third heating power terminal and a second end connected to the common power terminal. The first series resistor circuit, the second series resistor circuit, and the third series resistor circuit each include multiple heating resistors connected in parallel.

8. The vehicle-mounted compressor as described in claim 7, characterized in that, The power module for motor control and heating control also includes a positive power output terminal and a negative power output terminal; When the resistance heating power unit in the power module for motor control and heating control is connected to the negative power output terminal, the common power terminal is the positive power output terminal. When the resistance heating power unit in the power module for motor control and heating control is connected to the positive power output terminal, the common power terminal is the negative power output terminal.

9. The vehicle-mounted compressor as described in claim 6, characterized in that, The power module for motor control and heating control includes a first motor power terminal, a second motor power terminal, and a third motor power terminal, wherein the motor includes: The first phase input terminal is connected to the first motor power terminal; The second phase input terminal is connected to the second motor power terminal; The third phase input terminal is connected to the third motor power terminal.

10. A vehicle, characterized in that, The vehicle includes the on-board compressor as described in any one of claims 6 to 9.

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