Power module, driving motor controller and vehicle

Abstract

The embodiment of the utility model discloses a power module, a driving motor controller and a vehicle. Wherein the power module comprises a power factor correction unit and a full-bridge power unit, and the power factor correction unit and the full-bridge power unit are electrically connected and integrated on a substrate.

Description

Technical Field

[0001] The present application belongs to the technical field of power devices. Specifically, the present application relates to a power module, a drive motor controller and a vehicle. Background Art

[0002] Power modules are core devices for energy conversion and transmission and are widely used in the field of new energy. Their performance and reliability are crucial to the performance of the entire power electronics system.

[0003] Existing power modules usually use three separate modules, namely, a rectifier bridge module, a PFC module and an IPM module, which are electrically connected by peripheral circuits. The entire circuit uses a large number of devices and has a complex layout. This technology leads to significant electromagnetic interference, a large total area of ​​the control board, too many exposed connection points in the peripheral circuit, large spacing between units, and a relatively high total cost. This seriously affects the performance of the entire system and brings great trouble to the hardware design of the entire system. Utility Model Content

[0004] The purpose of this application is to provide a new technical solution for a power module, a drive motor controller and a vehicle.

[0005] According to a first aspect of the present application, an embodiment of the present application provides a power module, wherein the power module comprises a power factor correction unit and a full-bridge power unit, wherein the power factor correction unit is electrically connected to the full-bridge power unit and integrated on a substrate.

[0006] Optionally, the power factor correction unit is a Vienna three-phase power factor correction unit, and the full-bridge power unit is a three-phase full-bridge power unit.

[0007] Optionally, the positive terminal DC of the power factor correction unit 1+ With the positive terminal of the full-bridge power cell DC 2+ connect;

[0008] The negative terminal DC of the power factor correction unit 1 - connected to the negative terminal of any half-bridge circuit of the full-bridge power unit.

[0009] Optionally, an input end of the power factor correction unit is connected to an inductor module;

[0010] The power factor correction unit includes a first switch module, a second switch module and a third switch module connected in parallel.

[0011] Optionally, the inductor module is a three-phase inductor, including a first inductor, a second inductor and a third inductor, the first inductor is connected to the input end of the first switch module, the second inductor is connected to the input end of the second switch module, and the third inductor is connected to the input end of the third switch module.

[0012] Optionally, input ends of the first inductor, the second inductor and the third inductor are respectively connected to output ends of a three-phase AC power supply, namely, phase A, phase B and phase C.

[0013] Optionally, output ends of the first switch module, the second switch module and the third switch module are respectively connected to a neutral point terminal of the power factor correction unit.

[0014] Optionally, the output end of the power factor correction unit is connected to a capacitor module.

[0015] Optionally, the capacitor module includes a first capacitor and a second capacitor;

[0016] The first capacitor is connected to the positive terminal DC of the power factor correction unit. 1+ and between a neutral point terminal of the power factor correction unit;

[0017] The second capacitor is connected to the negative terminal DC of the power factor correction unit. 1 - between the neutral point terminal of the power factor correction unit.

[0018] Optionally, the first output end of the first inductor is connected to the anode of the seventh diode and the cathode of the tenth diode, and the cathode of the seventh diode is connected to the DC of the power factor correction unit. 1+ The anode of the tenth diode is connected to the DC 1 -connect;

[0019] The second output end of the first inductor is connected to the input end of the first switch module.

[0020] Optionally, the first output end of the second inductor is connected to the anode of the eighth diode and the cathode of the eleventh diode, and the cathode of the eighth diode is connected to the positive terminal DC of the power factor correction unit. 1+ The anode of the eleventh diode is connected to the DC 1 -connect;

[0021] The second output terminal of the second inductor is connected to the input terminal of the second switch module.

[0022] Optionally, the first output end of the third inductor is connected to the anode of the ninth diode and the cathode of the twelfth diode, and the cathode of the ninth diode is connected to the DC of the power factor correction unit. 1+ The anode of the twelfth diode is connected to the DC 1 -connect;

[0023] The second output end of the third inductor is connected to the input end of the third switch module.

[0024] Optionally, the power module further includes a driving circuit;

[0025] The first switch module, the second switch module and the third switch module respectively include two switch units connected in series, any of the switch units includes a switch and a diode connected in reverse parallel to the switch, and any of the switches is electrically connected to the drive circuit.

[0026] Optionally, the switch is an IGBT chip, and the diode is a fast recovery diode.

[0027] Optionally, the first switch module includes a first switch unit and a second switch unit electrically connected to the first switch;

[0028] The first switch unit is connected to the first inductor, and the second switch unit is connected to a neutral point terminal of the power factor correction unit;

[0029] The first switch unit includes a first switch and a first diode connected in reverse parallel to the first switch, and the second switch unit includes a second switch and a second diode connected in reverse parallel to the second switch;

[0030] The gate of the first switch and the gate of the second switch are connected to the driving circuit respectively, or the gate of the first switch and the gate of the second switch are connected to the same driving circuit.

[0031] Optionally, the second switch module includes a third switch unit and a fourth switch unit electrically connected to the third switch unit;

[0032] The third switch unit is connected to the output end of the second inductor, and the fourth switch unit is connected to the neutral point terminal of the power factor correction unit;

[0033] The third switch unit includes a third switch and a third diode connected in reverse parallel to the third switch, and the fourth switch unit includes a fourth switch and a fourth diode connected in reverse parallel to the fourth switch;

[0034] The gate of the third switch and the gate of the fourth switch are connected to the driving circuit respectively, or the gate of the third switch and the gate of the fourth switch are connected to the same driving circuit.

[0035] Optionally, the third switch module includes a fifth switch unit and a sixth switch unit electrically connected to the fifth switch unit;

[0036] The fifth switch unit is connected to the output end of the third inductor, and the sixth switch unit is connected to the neutral point terminal of the power factor correction unit;

[0037] The fifth switch unit includes a fifth switch and a fifth diode connected in reverse parallel to the fifth switch, and the sixth switch unit includes a sixth switch and a sixth diode connected in reverse parallel to the sixth switch;

[0038] The gate of the fifth switch and the gate of the sixth switch are connected to the driving circuit respectively, or the gate of the fifth switch and the gate of the sixth switch are connected to the same driving circuit.

[0039] Optionally, the power module further includes a current detection circuit;

[0040] The negative terminal DC of the power factor correction unit 1 -, and the negative terminal of any half-bridge circuit of the full-bridge power unit is respectively connected to the current detection circuit.

[0041] Optionally, the full-bridge power unit includes a first half-bridge circuit, a second half-bridge circuit and a third half-bridge circuit;

[0042] The first ends of the first half-bridge circuit, the second half-bridge circuit and the third half-bridge circuit are respectively connected to the positive terminal DC of the full-bridge power unit. 2+ ;

[0043] The second ends of the first half-bridge circuit, the second half-bridge circuit and the third half-bridge circuit respectively form the first negative terminal DC of the full-bridge power unit. 2 -, Second negative terminal DC 3 - and the third negative terminal DC 4 -.

[0044] Optionally, the first negative terminal DC 2 -, the second negative terminal DC 3 - and the third negative terminal DC 4 - are respectively connected to the current detection circuit.

[0045] Optionally, the first negative terminal DC 2 -, the second negative terminal DC3 - and the third negative terminal DC 4 - are connected to each other and electrically connected to the current detection circuit.

[0046] Optionally, the upper bridge arm of the full-bridge power unit includes a first unit, a second unit and a third unit, the first unit includes a first chip and a first FRD chip connected in reverse parallel to the first chip, the second unit includes a second chip and a second FRD chip connected in reverse parallel to the second chip, and the third unit includes a third chip and a third FRD chip connected in reverse parallel to the third chip;

[0047] The lower bridge arm of the full-bridge power unit includes a fourth unit, a fifth unit and a sixth unit. The fourth unit includes a fourth chip and a fourth FRD chip reversely connected in parallel with the fourth chip. The fifth unit includes a fifth chip and a fifth FRD chip reversely connected in parallel with the fifth chip. The sixth unit includes a sixth chip and a sixth FRD chip reversely connected in parallel with the sixth chip.

[0048] Optionally, the power module further includes a driving circuit;

[0049] The first chip, the second chip, the third chip, the fourth chip, the fifth chip and the sixth chip are all IGBT chips, and a gate of each of the IGBT chips is electrically connected to a driving circuit.

[0050] Optionally, an output terminal U is provided between the first unit and the fourth unit;

[0051] An output terminal V is provided between the second unit and the fifth unit;

[0052] An output terminal W is provided between the third unit and the sixth unit;

[0053] The output terminal U, the output terminal V, and the output terminal W are used to connect a load.

[0054] Optionally, the power module further includes a temperature detection unit, and the temperature detection unit leads to a terminal X4 and a terminal X5.

[0055] Optionally, the temperature detection unit is an NTC temperature detection unit.

[0056] According to a second aspect of the present application, an embodiment of the present application provides a drive motor controller. The drive motor controller includes the power module as described in the first aspect.

[0057] According to a third aspect of the present application, an embodiment of the present application provides a vehicle, wherein the vehicle includes a drive motor controller as described in the second aspect.

[0058] One beneficial effect of this application is:

[0059] The power module proposed in the embodiment of the present application electrically connects the power factor correction unit (PFC unit) and the full-bridge power unit together to control the load. The power module provided in the embodiment of the present application has a simple structure, can reduce the weight and volume of the entire power module, and is more conducive to the layout of the power module; and the power factor correction unit and the full-bridge power unit are integrated into a substrate, and most of the electrical connection points are located on the substrate, which can reduce the connection points of the peripheral circuit and extend the service life of the power module.

[0060] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0062] Figure 1 A block diagram of a power module provided in an embodiment of the present application;

[0063] Figure 2 A topological diagram of a power module provided in an embodiment of the present application;

[0064] Figure 3 A schematic diagram of a power module provided in an embodiment of the present application.

[0065] Description of reference numerals:

[0066] 1. Power factor correction unit; 11. First switch module; 12. Second switch module; 13. Third switch module; 101. Neutral point terminal;

[0067] 2. Full-bridge power unit;

[0068] 3. Inductor module; L1, first inductor; L2, second inductor; L3, third inductor;

[0069] 4. Capacitor module; C1, first capacitor; C2, second capacitor;

[0070] 5. Driving circuit; 6. Current detection circuit; 7. Temperature detection unit;

[0071] D1, the first diode; D2, the second diode; D3, the third diode; D4, the fourth diode; D5, the fifth diode; D6, the sixth diode; D7, the seventh diode; D8, the eighth diode; D9, the ninth diode; D10, the tenth diode; D11, the eleventh diode; D12, the twelfth diode;

[0072] T1, first switch; T2, second switch; T3, third switch; T4, fourth switch; T5, fifth switch; T6, sixth switch;

[0073] U1, first chip; V1, second chip; W1, third chip;

[0074] U2, the fourth chip; V2, the fifth chip; W2, the sixth chip. DETAILED DESCRIPTION

[0075] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0076] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application, its application, or uses.

[0077] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0078] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0079] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0080] The power module, drive motor controller and vehicle provided in the embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0081] According to one aspect of the present application, a power module is provided. Figures 1 to 3 The power module includes a power factor correction unit 1 and a full-bridge power unit 2. The power factor correction unit 1 is electrically connected to the full-bridge power unit 2 and integrated on a substrate.

[0082] According to the power module provided by the embodiment of the present application, the power factor correction unit 1 (PFC unit) is integrated with the full-bridge power unit 2 to control the load. The power module provided by the embodiment of the present application has a simple structure and can reduce the weight and volume of the entire power module, which is more conducive to the layout of the power module. In addition, the power factor correction unit and the full-bridge power unit are integrated into a substrate, and most of the electrical connection points are located on the substrate, which can reduce the connection points of the peripheral circuit and extend the service life of the power module.

[0083] The full name of the power factor correction unit 1 should be Power Factor Corrector, referred to as PFC unit, and its function is to improve the utilization rate of power supply to electricity when converting AC power into DC power and reduce the power loss in the conversion process.

[0084] The full-bridge power unit 2 is, for example, a three-phase full-bridge power unit. The full-bridge power unit 2 can be used to rectify the current output by the power factor correction unit 1 .

[0085] In some examples of this application, see Figure 2 and Figure 3 The power factor correction unit 1 is a Vienna three-phase power factor correction unit. The full-bridge power unit 2 is a three-phase full-bridge power unit.

[0086] That is to say, the power module provided in the embodiment of the present application is a three-phase full-bridge power module with integrated Vienna power factor correction, which may include a Vienna three-phase power factor correction unit and a three-phase full-bridge power unit. The Vienna three-phase power factor correction unit has the functions of power factor correction and rectification, and the use of the Vienna three-phase power factor correction unit in the present application can achieve the purpose of suppressing electronic pollution.

[0087] It should be noted that the Vienna three-phase power factor correction unit can improve the efficiency and performance of electrical equipment.

[0088] For example, when there is a phase difference between the power supply and the load, reverse energy flow will occur and certain losses will occur. The Vienna three-phase power factor correction unit can eliminate this phase difference through phase adjustment, thereby increasing the power factor from a lower value to a higher value, thus achieving more efficient power transmission.

[0089] The introduction of Vienna three-phase power factor correction unit can ensure that electrical equipment (electrical equipment) works in the best state and save energy.

[0090] See also Figure 2 and Figure 3 , Figure 2 and Figure 3The leftmost figure shows a Vienna three-phase power factor correction unit, and the center figure shows a three-phase full-bridge power unit.

[0091] In some examples of the present application, the positive terminal DC of the power factor correction unit 1 1+ The positive terminal of the full-bridge power unit 2 is DC 2+ Connect the negative terminal of the power factor correction unit 1 to the DC 1 - connected to the negative terminal of any half-bridge circuit of the full-bridge power unit 2.

[0092] The power module provided in the embodiment of the present application adopts the power factor correction unit 1 and the full-bridge power unit 2, that is, the Vienna three-phase power factor correction unit and the three-phase full-bridge power unit are integrated together, and the connection method between the two is relatively simple.

[0093] For example, the positive terminal DC of the Vienna three-phase power factor correction unit 1+ The positive terminal of the three-phase full-bridge power unit is DC 2+ The three-phase full-bridge power unit includes three parallel half-bridge circuits, and each half-bridge circuit leads to a negative terminal. Figure 2 The DC shown in 2 -、DC 3 -、DC 4 -, these can be connected to the negative terminal of the Vienna three-phase power factor correction unit DC 1 -Electrical connection.

[0094] In some examples of the present application, the input end of the power factor correction unit 1 is connected to an inductor module 3. The power factor correction unit 1 includes a first switch module 11, a second switch module 12 and a third switch module 13 connected in parallel.

[0095] The power factor correction unit 1 provided in the embodiment of the present application is equivalent to adding a controllable switch module between the power supply and the load, which can adjust the phase difference between the current and voltage of the power supply, thereby improving the efficiency and performance of the electrical equipment.

[0096] In some examples of this application, see Figure 1 and Figure 3 The inductor module 3 is a three-phase inductor, and includes a first inductor L1, a second inductor L2 and a third inductor L3. The first inductor L1 is connected to the input end of the first switch module 11, the second inductor L2 is connected to the input end of the second switch module 12, and the third inductor L3 is connected to the input end of the third switch module 13.

[0097] The power factor correction unit 1 provided in the embodiment of the present application is a Vienna three-phase power factor correction unit, and a three-phase inductor is connected to its input end. The main function of the three-phase inductor is to isolate and filter the AC signal or form a resonant circuit with a capacitor, a resistor, etc.

[0098] In some examples of this application, see Figure 3 The input ends of the first inductor L1, the second inductor L2 and the third inductor L3 are respectively connected to the output ends of the three-phase AC power supply, phase A, phase B and phase C.

[0099] In some examples of this application, see Figure 2 and Figure 3 The output ends of the first switch module 11 , the second switch module 12 and the third switch module 13 are respectively connected to the neutral point terminal 101 of the power factor correction unit 1 .

[0100] The neutral point terminal 101 refers to the common point of the star connection in a three-phase (or multi-phase) AC system. Figure 2 and Figure 3 .

[0101] In some examples of this application, see Figure 1 and Figure 3 The output end of the power factor correction unit 1 is connected to a capacitor module 4.

[0102] The capacitor module 4 can store electricity to supply power to a load.

[0103] In some examples of this application, see Figure 1 and Figure 3 The capacitor module 4 includes a first capacitor C1 and a second capacitor C2. The first capacitor C1 is connected to the positive terminal DC of the power factor correction unit 1. 1+ and the neutral point terminal 101 of the power factor correction unit 1. The second capacitor C2 is connected to the negative terminal DC of the power factor correction unit 1. 1 - between the neutral point terminal 101 of the power factor correction unit 1 .

[0104] When the first inductor L1, the second inductor L2 and the third inductor L3 in the inductor module 3 are charged, the energy stored in the first capacitor C1 and the second capacitor C2 can be used to power the load. The energy stored in the first inductor L1, the second inductor L2 and the third inductor L3 can also be used to charge the first capacitor C1 and the second capacitor C2.

[0105] The first terminal of the first capacitor C1 is for example connected to the bus terminal DC of the Vienna three-phase power factor correction unit at the periphery. 1+The second terminal of the second capacitor C2 is connected to the bus terminal DC of the Vienna three-phase power factor correction unit at the periphery. 1 -connect.

[0106] In some examples of the present application, in the power module, the first output end of the first inductor L1 is connected to the anode of the seventh diode D7 and the cathode of the tenth diode D10, and the cathode of the seventh diode D7 is connected to the positive terminal DC of the power factor correction unit 1. 1+ The anode of the tenth diode D10 is connected to the negative terminal DC of the power factor correction unit 1. 1 The second output terminal of the first inductor L1 is connected to the input terminal of the first switch module 11 .

[0107] In some examples of the present application, in the power module, the first output end of the second inductor L2 is connected to the anode of the eighth diode D8 and the cathode of the eleventh diode D11, and the cathode of the eighth diode D8 is connected to the positive terminal DC of the power factor correction unit 1. 1+ The anode of the eleventh diode D11 is connected to the negative terminal DC of the power factor correction unit 1. 1 The second output terminal of the second inductor L2 is connected to the input terminal of the second switch module 12 .

[0108] In some examples of the present application, the first output end of the third inductor L3 is connected to the anode of the ninth diode D9 and the cathode of the twelfth diode D12, and the cathode of the ninth diode D9 is connected to the positive terminal DC of the power factor correction unit 1. 1+ The anode of the twelfth diode D12 is connected to the negative terminal DC of the power factor correction unit 1. 1 The second output terminal of the third inductor L3 is connected to the input terminal of the third switch module 13 .

[0109] According to the above three examples, two diodes are further introduced between any switch module in the power factor correction unit 1 and the corresponding inductor.

[0110] The seventh diode D7, the eighth diode D8, the ninth diode D9, the tenth diode D10, the eleventh diode D11, and the twelfth diode D12 are, for example, fast recovery diodes. The fast recovery diode belongs to a PIN junction diode, that is, a base region I is added between a P-type silicon material and an N-type silicon material to form a PIN silicon wafer. Because the base region is very thin and the reverse recovery charge is very small, the reverse recovery time of the fast recovery diode is short.

[0111] In some examples of this application, see Figure 1 , the power module also includes a drive circuit 5; see Figure 2 and Figure 3 The first switch module 11 , the second switch module 12 and the third switch module 13 respectively include two switch units connected in series, any of the switch units includes a switch and a diode connected in reverse parallel to the switch, and any of the switches is electrically connected to the drive circuit 5 .

[0112] In some examples of the present application, the switch is an IGBT chip, and the diode is a fast recovery diode.

[0113] In some examples of this application, see Figure 2 and Figure 3 The first switch module 11 includes a first switch unit and a second switch unit electrically connected to the first switch. The first switch unit is connected to the first inductor L1, and the second switch unit is connected to the neutral point terminal 101 of the power factor correction unit 1. The first switch unit includes a first switch T1 and a first diode D1 connected in reverse parallel to the first switch T1, and the second switch unit includes a second switch T2 and a second diode D2 connected in reverse parallel to the second switch T2. The gate of the first switch T1 and the gate of the second switch T2 are respectively connected to the drive circuit 5, or the gate of the first switch T1 and the gate of the second switch T2 are connected to the same drive circuit 5.

[0114] It should be noted that the gate of the first switch T1 and the gate of the second switch T2 can each use one driving voltage in the driving circuit 5. Of course, the gate of the first switch T1 and the gate of the second switch T2 can also share one driving voltage, and the sharing method can also be realized by connecting the terminals inside the power module provided in the embodiment of the present application.

[0115] In some examples of this application, see Figure 2 and Figure 3 The second switch module includes a third switch unit and a fourth switch unit electrically connected to the third switch unit. The third switch unit is connected to the output end of the second inductor L2, and the fourth switch unit is connected to the neutral point terminal 101 of the power factor correction unit 1. The third switch unit includes a third switch T3 and a third diode D3 connected in reverse parallel to the third switch T3, and the fourth switch unit includes a fourth switch T4 and a fourth diode D4 connected in reverse parallel to the fourth switch T4. The gate of the third switch T3 and the gate of the fourth switch T4 are respectively connected to the drive circuit 5, or the gate of the third switch T3 and the gate of the fourth switch T4 are connected to the same drive circuit 5.

[0116] In some examples of this application, see Figure 2 and Figure 3 The third switch module includes a fifth switch unit and a sixth switch unit electrically connected to the fifth switch unit. The fifth switch unit is connected to the output end of the third inductor L3, and the sixth switch unit is connected to the neutral point terminal 101 of the power factor correction unit 1. The fifth switch unit includes a fifth switch T5 and a fifth diode D5 connected in reverse parallel to the fifth switch T5, and the sixth switch unit includes a sixth switch T6 and a sixth diode D6 connected in reverse parallel to the sixth switch T6. The gate of the fifth switch T5 and the gate of the sixth switch T6 are respectively connected to the drive circuit 5, or the gate of the fifth switch T5 and the gate of the sixth switch T6 are connected to the same drive circuit 5.

[0117] The power module provided in the embodiment of the present application has a main circuit that integrates a Vienna three-phase power factor correction unit and a three-phase full-bridge power unit. Figure 1 , the inductor module 3 and the capacitor module 4 are connected to the periphery. Among them, the input ends of the first inductor L1, the second inductor L2 and the third inductor L3 are connected to the AC mains input phase A, phase B and phase C respectively. There are 6 switches in the Vienna three-phase power factor correction unit, namely the first switch T1, the second switch T2, the third switch T3, the fourth switch T4, the fifth switch T5 and the sixth switch T6. The 6 switches are all IGBT chips, and the 6 diodes such as the first diode D1, the second diode D2, the third diode D3, the fourth diode D4, the fifth diode D5 and the sixth diode D6 are all fast recovery diodes reversely connected in parallel with the IGBT chip. The gates of the above 6 IGBT chips are connected to the drive circuit 5 at the periphery.

[0118] In addition, see Figure 2 and Figure 3 There is a terminal X1 between the first switch unit and the second switch unit, a terminal X2 between the third switch unit and the fourth switch unit, and a terminal X3 between the fifth switch unit and the sixth switch unit. Terminal X1, terminal X2 and terminal X3 are signal terminals used to match the driving voltage between the two switch units.

[0119] In some examples of this application, see Figure 1 The power module further includes a current detection circuit 6. The negative terminal DC of the power factor correction unit 1 1 -, and the negative terminal of any half-bridge circuit of the full-bridge power unit 2 is respectively connected to the current detection circuit 6, see Figure 3 .

[0120] That is, the positive terminal DC of the power factor correction unit 1 1+ The positive terminal of the full-bridge power unit 2 is DC 2+ The negative terminal of any half bridge circuit of the full bridge power unit 2 is connected at the periphery, and the corresponding detection circuit is added at the periphery and connected, and finally connected to the negative terminal DC of the power factor correction unit 1. 1 -connect.

[0121] In some examples of the present application, the first negative terminal DC 2 -, the second negative terminal DC 3 - and the third negative terminal DC 4 - are interconnected and electrically connected to the current detection circuit 6.

[0122] That is, the first negative terminal DC 2 -, the second negative terminal DC 3 - and the third negative terminal DC 4 The terminals can be electrically connected to each other inside the power module, and the current detection circuit 6 is implemented at the output terminals U, V, W.

[0123] In some examples of this application, see Figure 2 and Figure 3 The full-bridge power unit 2 includes a first half-bridge circuit, a second half-bridge circuit and a third half-bridge circuit. The first ends of the first half-bridge circuit, the second half-bridge circuit and the third half-bridge circuit are respectively connected to the positive terminal DC of the full-bridge power unit 2. 2+ The second ends of the first half-bridge circuit, the second half-bridge circuit and the third half-bridge circuit respectively form the first negative terminal DC of the full-bridge power unit 2. 2 -, Second negative terminal DC 3 - and the third negative terminal DC 4 -.

[0124] In some examples of the present application, the first negative terminal DC 2 -, the second negative terminal DC 3 - and the third negative terminal DC 4 - respectively connected to the current detection circuit 6.

[0125] That is, the first negative terminals DC of the three half-bridge circuits of the full-bridge power unit 2 2 -, Second negative terminal DC 3 - and the third negative terminal DC 4 -, add corresponding detection circuits such as current detection circuit 6 on the periphery and connect them, and finally connect them to the negative terminal DC of the power factor correction unit 1. 1-connect.

[0126] In some examples of this application, see Figure 2 and Figure 3 The upper bridge arm of the full-bridge power unit 2 includes a first unit, a second unit and a third unit. The first unit includes a first chip U1 and a first FRD chip reversely connected in parallel with the first chip U1. The second unit includes a second chip V1 and a second FRD chip reversely connected in parallel with the second chip V1. The third unit includes a third chip W1 and a third FRD chip reversely connected in parallel with the third chip W1.

[0127] The lower bridge arm of the full-bridge power unit 2 includes a fourth unit, a fifth unit and a sixth unit. The fourth unit includes a fourth chip U2 and a fourth FRD chip reversely connected in parallel with the fourth chip U2. The fifth unit includes a fifth chip V2 and a fifth FRD chip reversely connected in parallel with the fifth chip V2. The sixth unit includes a sixth chip W2 and a sixth FRD chip reversely connected in parallel with the sixth chip W2.

[0128] In some examples of this application, see Figure 1 , the power module further includes a drive circuit 5. The first chip U1, the second chip V1, the third chip W1, the fourth chip U2, the fifth chip V2 and the sixth chip W2 are all IGBT chips, and the gate of each IGBT chip is electrically connected to the drive circuit 5.

[0129] According to the above example, the first chip U1, the second chip V1 and the third chip W1 are three IGBT chips of the upper bridge arm of the three-phase full-bridge power unit, which cooperate with the fast recovery FRD chip connected in reverse parallel thereto. The third chip U2, the fourth chip V2 and the fifth chip W2 are three IGBTs of the lower bridge arm of the three-phase full-bridge power unit, which cooperate with the fast recovery FRD chip connected in reverse parallel thereto. The gates of these six IGBT chips are connected to the drive circuit 5 at the periphery.

[0130] In some examples of this application, see Figure 2 and Figure 3 An output terminal U is provided between the first unit and the fourth unit; an output terminal V is provided between the second unit and the fifth unit; an output terminal W is provided between the third unit and the sixth unit; the output terminal U, the output terminal V and the output terminal W are used to connect a load.

[0131] That is to say, the output terminal U, the output terminal V and the output terminal W are three output terminals of the three-phase full-bridge power unit, which are mainly used to connect the load.

[0132] In some examples of this application, see Figures 1 to 3 The power module further includes a temperature detection unit 7, and the temperature detection unit 7 leads to a terminal X4 and a terminal X5.

[0133] The temperature detection unit is, for example, an NTC temperature detection unit.

[0134] For example, the temperature detection unit 7 uses an NTC thermistor, and the function can be realized through a peripheral temperature protection circuit. The NTC thermistor leads to terminals X4 and X5 separately, and is connected to the peripheral circuit.

[0135] According to the power module provided in the embodiment of the present application, see Figure 3 When the circuit of the power factor correction unit 1, i.e., the Vienna three-phase power factor correction unit, works normally, the first switch T1 is turned on, and the circuit stores the electric energy of the loop in the first inductor L1 through the first inductor L1, the first switch T1, the second diode D2, and the neutral point terminal 101. At this time, the energy stored in the first capacitor C1 and the second capacitor C2 supplies power to the load.

[0136] Please continue to see Figure 3 When the first switch T1 is turned off, the energy stored in the inductor charges the first capacitor C1 through the loop formed by the first inductor L1, the seventh diode D7, and the first capacitor C1. The principle is the same when the input voltage is reversed.

[0137] It should be noted that when the three-phase full-bridge power unit is working normally, the positive terminal DC of the power factor correction unit 1, i.e. the Vienna three-phase power factor correction unit 1+ Connect to the positive bus after Vienna rectification, the first negative terminal DC of the three-phase full-bridge power unit 2 -, the second negative terminal DC 3 -, the third negative terminal DC 4 - After the peripheral connection, it is connected to the negative busbar, and the switch control of the six bridge arms U1, V1, W1, U2, V2, and W2 is used to convert direct current into controllable alternating current. The temperature detection unit 7 has a separate lead-out terminal, and an external current detection circuit is used for voltage detection, which has the function of temperature monitoring.

[0138] The power module provided in the embodiment of the present application relates to a three-phase full-bridge power module with integrated Vienna power factor correction, which may include a Vienna three-phase power factor correction unit, a three-phase full-bridge power unit, and a temperature detection unit. Among them, the Vienna three-phase power factor correction unit has the functions of power factor correction and rectification, and realizes the functions through the peripheral power input port, drive circuit 5, capacitor module 4 (such as bus inductance), inductance module 4 (three-phase inductance), feedback filter unit, etc. Among them, the three-phase full-bridge power unit converts direct current into controllable alternating current, and realizes the functions through the peripheral drive circuit 5, temperature detection unit 7, feedback filter unit, load, etc. The temperature detection unit 7 can use an NTC thermistor to realize the function through a peripheral temperature protection circuit.

[0139] In the embodiments of the present application, the Vienna power factor correction and three-phase full-bridge topology integration are mainly explained. In addition, the current sensing resistor is further integrated inside the power module, which can appear in power modules of other packaging forms. Furthermore, the current sensing resistor can collect the current values ​​in the remaining loops in the topology except the three-phase output current. Furthermore, the voltage signal sampling chip or sampling circuit and the IGBT drive circuit can be integrated into the power module, making it possible to achieve further miniaturization and integration in the application.

[0140] According to another aspect of the present application, a drive motor controller is provided, which includes the power module provided by the above embodiment.

[0141] The power module provided in the embodiment of the present application can also be applied to other electrical equipment, such as vehicles, aircraft, ships, etc., which is not limited in the present application.

[0142] According to another aspect of the present application, a vehicle is provided, which includes the motor controller provided by the above embodiment.

[0143] The specific implementation of the motor controller and the vehicle in the embodiment of the present application can refer to the above-mentioned embodiment of the power module, so it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0144] Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are only for illustration, not for limiting the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A power module, characterized in that: It comprises a power factor correction unit (1) and a full-bridge power unit (2), wherein the power factor correction unit (1) is electrically connected to the full-bridge power unit (2) and integrated on a substrate; The positive terminal DC of the power factor correction unit (1) 1+ The positive terminal DC of the full-bridge power unit (2) 2+ connect; The negative terminal DC1- of the power factor correction unit (1) is connected to the negative terminal of any half-bridge circuit of the full-bridge power unit (2).

2. The power module according to claim 1, characterized in that: The power factor correction unit (1) is a Vienna three-phase power factor correction unit, and the full-bridge power unit (2) is a three-phase full-bridge power unit.

3. The power module according to any one of claims 1 to 2, characterized in that: The input end of the power factor correction unit (1) is connected to an inductor module (3); The power factor correction unit (1) comprises a first switch module (11), a second switch module (12) and a third switch module (13) connected in parallel.

4. The power module according to claim 3, characterized in that: The inductor module (3) is a three-phase inductor, comprising a first inductor (L1), a second inductor (L2) and a third inductor (L3); the first inductor (L1) is connected to an input end of the first switch module (11), the second inductor (L2) is connected to an input end of the second switch module (12), and the third inductor (L3) is connected to an input end of the third switch module (13).

5. The power module according to claim 4, characterized in that: The input ends of the first inductor (L1), the second inductor (L2) and the third inductor (L3) are respectively connected to the output ends of the three-phase AC power source, namely, phase A, phase B and phase C.

6. The power module according to claim 3, characterized in that: The output ends of the first switch module (11), the second switch module (12) and the third switch module (13) are respectively connected to the neutral point terminal (101) of the power factor correction unit (1).

7. The power module according to claim 6, characterized in that: The output end of the power factor correction unit (1) is connected to a capacitor module (4).

8. The power module according to claim 7, characterized in that: The capacitor module (4) comprises a first capacitor (C1) and a second capacitor (C2); The first capacitor (C1) is connected to the positive terminal DC of the power factor correction unit (1). 1+ Between the neutral point terminal (101) of the power factor correction unit (1); The second capacitor (C2) is connected between the negative terminal DC1- of the power factor correction unit (1) and the neutral point terminal (101) of the power factor correction unit (1).

9. The power module according to claim 4, characterized in that: The first output end of the first inductor (L1) is connected to the anode of the seventh diode (D7) and the cathode of the tenth diode (D10), and the cathode of the seventh diode (D7) is connected to the positive terminal DC of the power factor correction unit (1). 1+ The anode of the tenth diode (D10) is connected to the negative terminal DC1- of the power factor correction unit (1); The second output end of the first inductor (L1) is connected to the input end of the first switch module (11).

10. The power module according to claim 4, characterized in that: The first output end of the second inductor (L2) is connected to the anode of the eighth diode (D8) and the cathode of the eleventh diode (D11), and the cathode of the eighth diode (D8) is connected to the positive terminal DC of the power factor correction unit (1). 1+ The anode of the eleventh diode (D11) is connected to the negative terminal DC1- of the power factor correction unit (1); The second output end of the second inductor (L2) is connected to the input end of the second switch module (12).

11. The power module according to claim 4, characterized in that: The first output end of the third inductor (L3) is connected to the anode of the ninth diode (D9) and the cathode of the twelfth diode (D12), and the cathode of the ninth diode (D9) is connected to the positive terminal DC of the power factor correction unit (1). 1+ The anode of the twelfth diode (D12) is connected to the negative terminal DC1- of the power factor correction unit (1); The second output end of the third inductor (L3) is connected to the input end of the third switch module (13).

12. The power module according to claim 4, characterized in that: The power module also includes a drive circuit (5); The first switch module (11), the second switch module (12) and the third switch module (13) respectively include two switch units connected in series, any of the switch units includes a switch and a diode connected in reverse parallel to the switch, and any of the switches is electrically connected to the drive circuit (5).

13. The power module according to claim 12, characterized in that: The switch is an IGBT chip, and the diode is a fast recovery diode.

14. The power module according to claim 13, characterized in that: The first switch module (11) comprises a first switch unit and a second switch unit electrically connected to the first switch; The first switch unit is connected to the first inductor (L1), and the second switch unit is connected to the neutral point terminal (101) of the power factor correction unit (1); The first switch unit comprises a first switch (T1) and a first diode (D1) connected in reverse parallel to the first switch (T1), and the second switch unit comprises a second switch (T2) and a second diode (D2) connected in reverse parallel to the second switch (T2); The gate of the first switch (T1) and the gate of the second switch (T2) are respectively connected to the driving circuit (5), or the gate of the first switch (T1) and the gate of the second switch (T2) are connected to the same driving circuit (5).

15. The power module according to claim 12, characterized in that: The second switch module (12) comprises a third switch unit and a fourth switch unit electrically connected to the third switch unit; The third switch unit is connected to the output end of the second inductor (L2), and the fourth switch unit is connected to the neutral point terminal (101) of the power factor correction unit (1); The third switch unit comprises a third switch (T3) and a third diode (D3) connected in reverse parallel to the third switch (T3); the fourth switch unit comprises a fourth switch (T4) and a fourth diode (D4) connected in reverse parallel to the fourth switch (T4); The gate of the third switch (T3) and the gate of the fourth switch (T4) are respectively connected to the driving circuit (5), or the gate of the third switch (T3) and the gate of the fourth switch (T4) are connected to the same driving circuit (5).

16. The power module according to claim 12, characterized in that: The third switch module includes a fifth switch unit and a sixth switch unit electrically connected to the fifth switch unit; The fifth switch unit is connected to the output end of the third inductor (L3), and the sixth switch unit is connected to the neutral point terminal (101) of the power factor correction unit (1); The fifth switch unit includes a fifth switch (T5) and a fifth diode (D5) connected in reverse parallel to the fifth switch (T5), and the sixth switch unit includes a sixth switch (T6) and a sixth diode (D6) connected in reverse parallel to the sixth switch (T6); The gate of the fifth switch (T5) and the gate of the sixth switch (T6) are respectively connected to the driving circuit (5), or the gate of the fifth switch (T5) and the gate of the sixth switch (T6) are connected to the same driving circuit (5).

17. The power module according to claim 3, characterized in that: The power module also includes a current detection circuit (6); The negative terminal DC1- of the power factor correction unit (1) and the negative terminal of any half-bridge circuit of the full-bridge power unit (2) are respectively connected to the current detection circuit (6).

18. The power module according to claim 17, characterized in that: The full-bridge power unit (2) comprises a first half-bridge circuit, a second half-bridge circuit and a third half-bridge circuit; The first ends of the first half-bridge circuit, the second half-bridge circuit and the third half-bridge circuit are respectively connected to the positive terminal DC of the full-bridge power unit (2). 2+ ; The second ends of the first half-bridge circuit, the second half-bridge circuit and the third half-bridge circuit respectively form a first negative terminal DC2-, a second negative terminal DC3- and a third negative terminal DC4- of the full-bridge power unit (2).

19. The power module according to claim 18, characterized in that: The first negative terminal DC2-, the second negative terminal DC3- and the third negative terminal DC4- are respectively connected to the current detection circuit (6).

20. The power module according to claim 18, characterized in that: The first negative terminal DC2-, the second negative terminal DC3- and the third negative terminal DC4- are connected to each other and electrically connected to the current detection circuit (6).

21. The power module according to claim 18, characterized in that: The upper bridge arm of the full-bridge power unit (2) comprises a first unit, a second unit and a third unit, the first unit comprises a first chip (U1) and a first FRD chip connected in reverse parallel to the first chip (U1), the second unit comprises a second chip (V1) and a second FRD chip connected in reverse parallel to the second chip (V1), and the third unit comprises a third chip (W1) and a third FRD chip connected in reverse parallel to the third chip (W1); The lower bridge arm of the full-bridge power unit (2) comprises a fourth unit, a fifth unit and a sixth unit, the fourth unit comprises a fourth chip (U2) and a fourth FRD chip reversely connected in parallel with the fourth chip (U2), the fifth unit comprises a fifth chip (V2) and a fifth FRD chip reversely connected in parallel with the fifth chip (V2), and the sixth unit comprises a sixth chip (W2) and a sixth FRD chip reversely connected in parallel with the sixth chip (W2).

22. The power module according to claim 21, characterized in that: The power module also includes a drive circuit (5); The first chip (U1), the second chip (V1), the third chip (W1), the fourth chip (U2), the fifth chip (V2) and the sixth chip (W2) are all IGBT chips, and the gate of each IGBT chip is electrically connected to the drive circuit (5).

23. The power module according to claim 21, characterized in that: An output terminal U is provided between the first unit and the fourth unit; An output terminal V is provided between the second unit and the fifth unit; An output terminal W is provided between the third unit and the sixth unit; The output terminal U, the output terminal V, and the output terminal W are used to connect a load.

24. The power module according to claim 3, characterized in that: The power module further comprises a temperature detection unit (7), and the temperature detection unit (7) leads to a terminal X4 and a terminal X5.

25. The power module according to claim 24, characterized in that: The temperature detection unit is an NTC temperature detection unit.

26. A drive motor controller, characterized in that: Comprising a power module as claimed in any one of claims 1 to 25.

27. A vehicle, characterized in that: Comprising a drive motor controller as claimed in claim 26.

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