Power module and first and second power modules thereof

Abstract

This application discloses a power module and its first and second power modules, including: a DC positive terminal, a DC negative terminal, a zero-potential terminal, and an AC terminal; a first power module and a second power module, wherein the first power module leads out a DC positive terminal and the second power module leads out a DC negative terminal; the first power module further includes a first input terminal and a first output terminal, and the second power module further includes a second input terminal and a second output terminal; the first input terminal and the second input terminal are connected and serve as the zero-potential terminal of the power module, and the first output terminal and the second output terminal are connected and serve as the AC terminal of the power module. This application uses two power modules to construct the power module, which can significantly reduce the number of packaged modules used in the entire power module, reduce the overall cost, reduce the overall size, optimize the PCB layout and overall structure, and improve the overall power density.

Description

Technical Field

[0001] This utility model relates to the field of semiconductor packaging technology, and more specifically, to a power module and its first power module and second power module. Background Technology

[0002] The three-level DC / AC bidirectional converter is a simple and practical circuit among multi-level DC / AC bidirectional converters. With the rapid popularization of new power electronic devices and intelligent control chips, the three-level DC / AC bidirectional converter will play a significant role in high-power applications, such as in the field of new energy power electronic conversion.

[0003] With the widespread use of three-level DC / AC bidirectional converters in high-power applications, there is an increasing demand for smaller and lower-cost three-level DC / AC bidirectional converters. Utility Model Content

[0004] In view of the above problems, the purpose of this utility model is to provide a power module with smaller size and lower cost, as well as its first power module and second power module.

[0005] According to a first aspect of this application, a power module is provided, characterized in that it comprises:

[0006] DC positive terminal, DC negative terminal, zero potential terminal, AC terminal;

[0007] A first power module and a second power module, wherein the first power module leads out the DC positive terminal and the second power module leads out the DC negative terminal, the first power module further includes a first input terminal and a first output terminal, and the second power module further includes a second input terminal and a second output terminal, the first input terminal and the second input terminal are connected as the zero potential terminal of the power module, and the first output terminal and the second output terminal are connected as the AC terminal of the power module.

[0008] Optionally, the first power module further includes:

[0009] First control terminal, second control terminal;

[0010] A first power unit, wherein a first terminal of the first power unit is electrically connected to the DC positive terminal, and a control terminal of the first power unit is electrically connected to the first control terminal;

[0011] A second power unit, wherein a first terminal of the second power unit is electrically connected to a second terminal of the first power unit, a second terminal of the second power unit is electrically connected to the first output terminal, and a control terminal of the second power unit is electrically connected to a second control terminal; and

[0012] The third power unit has a first end electrically connected to the second end of the first power unit and the first end of the second power unit, and the second end of the third power unit is electrically connected to the first input end.

[0013] Optionally, the first power module further includes:

[0014] The first transmitting end is electrically connected to the second end of the first power unit;

[0015] The second transmitting end is electrically connected to the second end of the second power unit.

[0016] Optionally, the first power module further includes:

[0017] First control terminal, second control terminal, third control terminal;

[0018] A first power unit, wherein a first terminal of the first power unit is electrically connected to the DC positive terminal, and a control terminal of the first power unit is electrically connected to the first control terminal;

[0019] A second power unit, wherein a first terminal of the second power unit is electrically connected to a second terminal of the first power unit, a second terminal of the second power unit is electrically connected to the first output terminal, and a control terminal of the second power unit is electrically connected to a second control terminal; and

[0020] The fourth power unit has a first terminal electrically connected to the second terminal of the first power unit and the first terminal of the second power unit, a second terminal electrically connected to the first input terminal, and a control terminal electrically connected to the third control terminal.

[0021] Optionally, the first power module further includes:

[0022] The first transmitting end is electrically connected to the second end of the first power unit;

[0023] The second transmitting end is electrically connected to the second end of the second power unit;

[0024] The third transmitting end is electrically connected to the second end of the fourth power unit.

[0025] Optionally, the first power module further includes:

[0026] The first temperature sensor includes a first end of the first temperature sensor and a second end of the first temperature sensor;

[0027] The first temperature detection terminal is connected to the first terminal of the first temperature sensor;

[0028] The second temperature detection terminal is connected to the second terminal of the first temperature sensor.

[0029] Optionally, the first power module further includes:

[0030] The third output terminal is electrically connected to the second terminal of the first power unit and the first terminal of the second power unit, and is also electrically connected to the first terminal of the third power unit or the first terminal of the fourth power unit.

[0031] Optionally, the first power module further includes:

[0032] An insulating substrate includes a first surface and a second surface disposed opposite to each other. The first surface of the insulating substrate is provided with a first base island, a second base island, a third base island, a fourth base island, a fifth base island, a sixth base island, a seventh base island, an eighth base island, a ninth base island, a tenth base island, and an eleventh base island located in the middle of the first power module.

[0033] The first power unit is located on the first base island, and the first end of the first power unit is electrically connected to the first base island. The DC positive terminal is connected to the first base island to be electrically connected to the first end of the first power unit. The control terminal of the first power unit is electrically connected to the first control terminal via the third base island.

[0034] The second power unit is located on the second base island, and the first end of the second power unit is electrically connected to the second base island. The control end of the second power unit is electrically connected to the second control end via the sixth base island. The second end of the second power unit is also electrically connected to the first output end via the ninth base island.

[0035] The third power unit is located on the fifth base island, and its first end is electrically connected to the fifth base island. The second end of the third power unit is electrically connected to the first input terminal via the eighth base island.

[0036] Wherein, the second end of the first power unit is connected to the fifth base island to be electrically connected to the first end of the third power unit, and the first end of the second power unit is connected to the fifth base island to be electrically connected to the first end of the third power unit.

[0037] Optionally, the first power module further includes:

[0038] The housing has an insulating substrate located inside it. The housing leads out the DC positive terminal and the first input terminal located at the first end of the first power module. The housing leads out the first output terminal located at the second end of the first power module. The housing leads out the first control terminal and the second control terminal located at the third end of the first power module.

[0039] Optionally, the first power module further includes:

[0040] An insulating substrate includes a first surface and a second surface disposed opposite to each other. The first surface of the insulating substrate is provided with a first base island, a second base island, a third base island, a fourth base island, a fifth base island, a sixth base island, a seventh base island, an eighth base island, a ninth base island, a tenth base island, an eleventh base island, a twelfth base island, and a thirteenth base island located in the middle of the first power module.

[0041] The first power unit is located on the first base island, and the first end of the first power unit is electrically connected to the first base island. The DC positive terminal is connected to the first base island to be electrically connected to the first end of the first power unit. The control terminal of the first power unit is electrically connected to the first control terminal via the third base island.

[0042] The second power unit is located on the second base island, and the first end of the second power unit is electrically connected to the second base island. The control end of the second power unit is electrically connected to the second control end via the sixth base island. The second end of the second power unit is also electrically connected to the first output end via the ninth base island.

[0043] The fourth power unit is located on the fifth base island, and its first terminal is electrically connected to the fifth base island. Its second terminal is electrically connected to the first input terminal via the eighth base island. The control terminal of the fourth power unit is also electrically connected to the third control terminal via the thirteenth base island.

[0044] Wherein, the second end of the first power unit is connected to the fifth base island to be electrically connected to the first end of the fourth power unit, and the first end of the second power unit is connected to the fifth base island to be electrically connected to the first end of the fourth power unit.

[0045] Optionally, the first power module further includes:

[0046] The housing has an insulating substrate located inside it. The housing leads out the DC positive terminal and the first input terminal located at the first end of the first power module. The housing leads out the first output terminal located at the second end of the first power module. The housing leads out the first control terminal and the second control terminal located at the third end of the first power module. The housing leads out the third control terminal located at the fourth end of the first power module.

[0047] Optionally, the housing further extends a first temperature detection terminal and a second temperature detection terminal located at the fourth end of the first power module, the first end and the second end being opposite to each other, the third end and the fourth end being opposite to each other, and the first power module further includes:

[0048] A first temperature sensor is located on the insulating substrate. The first end of the first temperature sensor is electrically connected to the first temperature detection end via the tenth base island, and the second end of the first temperature sensor is electrically connected to the second temperature detection end via the eleventh base island.

[0049] Optionally, the housing also extends a third output terminal located at the second end of the first power module, the third output terminal being connected to the second base island to be electrically connected to the first end of the second power unit.

[0050] Optionally, the housing also extends the first transmitting end and the second transmitting end located at the third end of the first power module, the second end of the first power unit is connected to the fourth base island and electrically connected to the first transmitting end via the fourth base island, and the second end of the second power unit is electrically connected to the seventh base island via the ninth base island to be electrically connected to the second transmitting end.

[0051] Optionally, the housing also leads out the first transmitting end and the second transmitting end located at the third end of the first power module, and the housing also leads out the third transmitting end located at the fourth end of the first power module. The second end of the first power unit is electrically connected to the first transmitting end via the fourth base island, the second end of the second power unit is electrically connected to the seventh base island via the ninth base island to be electrically connected to the second transmitting end, and the second end of the fourth power unit is also electrically connected to the twelfth base island via the eighth base island to be electrically connected to the third transmitting end.

[0052] Optionally, the second power module further includes:

[0053] Fourth control terminal, fifth control terminal;

[0054] The fifth power unit has its first terminal electrically connected to the second output terminal, its second terminal electrically connected, and its control terminal electrically connected to the fourth control terminal.

[0055] A sixth power unit, wherein the first terminal of the sixth power unit is electrically connected to the second terminal of the fifth power unit, the second terminal of the sixth power unit is electrically connected to the DC negative terminal, and the control terminal of the sixth power unit is electrically connected to the fifth control terminal; and

[0056] The seventh power unit has its first end electrically connected to the second input terminal, and its second end electrically connected to the second end of the fifth power unit and the first end of the sixth power unit.

[0057] Optionally, the second power module further includes:

[0058] The fourth transmitting end is electrically connected to the second end of the fifth power unit;

[0059] The fifth transmitting end is electrically connected to the second end of the sixth power unit.

[0060] Optionally, the second power module further includes:

[0061] Fourth control terminal, fifth control terminal, sixth control terminal;

[0062] The fifth power unit has its first terminal electrically connected to the second output terminal, and its control terminal electrically connected to the fourth control terminal.

[0063] A sixth power unit, wherein the first terminal of the sixth power unit is electrically connected to the second terminal of the fifth power unit, the second terminal of the sixth power unit is electrically connected to the DC negative terminal, and the control terminal of the sixth power unit is electrically connected to the fifth control terminal; and

[0064] The eighth power unit has its first end electrically connected to the second input end, its second end electrically connected to the second end of the fifth power unit and the first end of the sixth power unit, and its control end electrically connected to the sixth control end.

[0065] Optionally, the second power module further includes:

[0066] The fourth transmitting end is electrically connected to the second end of the fifth power unit;

[0067] The fifth transmitting end is electrically connected to the second end of the sixth power unit;

[0068] The sixth transmitting end is electrically connected to the second end of the eighth power unit.

[0069] Optionally, the second power module further includes:

[0070] The second temperature sensor includes a first end of the second temperature sensor and a second end of the second temperature sensor.

[0071] The third temperature detection terminal is connected to the first terminal of the second temperature sensor;

[0072] The fourth temperature detection terminal is connected to the second terminal of the second temperature sensor.

[0073] Optionally, the second power module further includes:

[0074] The fourth output terminal is electrically connected to the second terminal of the fifth power unit, the first terminal of the sixth power unit, and the second terminal of the seventh power unit or the second terminal of the eighth power unit.

[0075] Optionally, the second power module further includes:

[0076] An insulating substrate includes a first surface and a second surface disposed opposite to each other. The first surface of the insulating substrate is provided with fourteenth, fifteenth, sixteenth, seventeenth, eighteenth, nineteenth, twentieth, twenty-first, twenty-second, twenty-third, and twenty-fourth base islands located in the middle of the second power module.

[0077] The fifth power unit is located on the fourteenth base island, and the first end of the fifth power unit is electrically connected to the fourteenth base island. The second output end is connected to the fourteenth base island to be electrically connected to the first end of the fifth power unit. The control end of the fifth power unit is electrically connected to the fourth control end via the sixteenth base island.

[0078] The sixth power unit is located on the fifteenth base island, and the first end of the sixth power unit is electrically connected to the fifteenth base island. The first end of the sixth power unit is also connected to the twenty-second base island via the fifteenth base island to be electrically connected to the second end of the fifth power unit. The control end of the sixth power unit is electrically connected to the fifth control end via the nineteenth base island. The second end of the sixth power unit is also electrically connected to the DC negative terminal via the twenty-first base island.

[0079] The seventh power unit is located on the eighteenth base island, and the first end of the seventh power unit is electrically connected to the eighteenth base island. The second input end is connected to the eighteenth base island to be electrically connected to the first end of the seventh power unit. The second end of the seventh power unit is electrically connected to the first end of the sixth power unit via the fifteenth base island.

[0080] Optionally, the second power module further includes:

[0081] The housing has an insulating substrate located inside it. The housing leads out the second input terminal and the DC negative terminal located at the first end of the second power module. The housing leads out the second output terminal located at the second end of the second power module. The housing leads out the fourth control terminal and the fifth control terminal located at the fourth end of the second power module.

[0082] Optionally, the second power module further includes:

[0083] An insulating substrate includes a first surface and a second surface disposed opposite to each other. The first surface of the insulating substrate is provided with fourteenth, fifteenth, sixteenth, seventeenth, eighteenth, nineteenth, twentieth, twenty-first, twenty-second, twenty-third, twenty-fourth, twenty-fifth, and twenty-sixth base islands located in the middle of the second power module.

[0084] The fifth power unit is located on the fourteenth base island, and the first end of the fifth power unit is electrically connected to the fourteenth base island. The second output end is connected to the fourteenth base island to be electrically connected to the first end of the fifth power unit. The control end of the fifth power unit is electrically connected to the fourth control end via the sixteenth base island.

[0085] The sixth power unit is located on the fifteenth base island, and the first end of the sixth power unit is electrically connected to the fifteenth base island. The first end of the sixth power unit is also connected to the twenty-second base island via the fifteenth base island to be electrically connected to the second end of the fifth power unit. The control end of the sixth power unit is electrically connected to the fifth control end via the nineteenth base island. The second end of the sixth power unit is also electrically connected to the DC negative terminal via the twenty-first base island.

[0086] The eighth power unit is located on the eighteenth base island, and the first end of the eighth power unit is electrically connected to the eighteenth base island. The second input end is connected to the eighteenth base island to be electrically connected to the first end of the eighth power unit. The second end of the eighth power unit is electrically connected to the first end of the sixth power unit via the fifteenth base island. The control end of the eighth power unit is also electrically connected to the sixth control end via the twenty-sixth base island.

[0087] Optionally, the second power module further includes:

[0088] The housing has an insulating substrate located inside it. The housing leads out the second input terminal and the DC negative terminal located at the first end of the second power module. The housing leads out the second output terminal located at the second end of the second power module. The housing leads out the fourth control terminal and the fifth control terminal located at the fourth end of the second power module. The housing leads out the sixth control terminal located at the third end of the second power module.

[0089] Optionally, the housing further extends a third temperature detection terminal and a fourth temperature detection terminal located at the third end of the second power module, with the first end and the second end opposite to each other, and the third end and the fourth end opposite to each other. The second power module further includes:

[0090] The second temperature sensor is located on the insulating substrate. The first end of the second temperature sensor is electrically connected to the third temperature detection end via the 23rd base island, and the second end of the second temperature sensor is electrically connected to the fourth temperature detection end via the 24th base island.

[0091] Optionally, the housing also extends a fourth output terminal located at the second end of the first power module, the fourth output terminal being connected to the second twelfth base island to be electrically connected to the second end of the fifth power unit.

[0092] Optionally, the housing also extends the fourth transmitter and the fifth transmitter located at the fourth end of the second power module. The second end of the fifth power unit is electrically connected to the seventeenth base island via the twenty-twelfth base island to be electrically connected to the fourth transmitter. The second end of the sixth power unit is connected to the twenty-tenth base island and electrically connected to the fifth transmitter via the twenty-tenth base island.

[0093] Optionally, the housing also leads out the fourth transmitter and the fifth transmitter located at the fourth end of the second power module, and the housing also leads out the sixth transmitter located at the third end of the second power module. The second end of the fifth power unit is electrically connected to the fourth transmitter via the twenty-second base island and the seventeenth base island. The second end of the sixth power unit is electrically connected to the fifth transmitter via the twenty-first base island. The second end of the eighth power unit is also electrically connected to the sixth transmitter via the twenty-fifth base island.

[0094] Optionally, the first power module further includes:

[0095] A heat dissipation substrate includes a first surface and a second surface opposite to each other, wherein the first surface of the heat dissipation substrate is fixed to the second surface of the insulating substrate in the first power module, and the second surface of the heat dissipation substrate dissipates heat.

[0096] A cover plate that covers the first surface of the insulating substrate in the first power module.

[0097] Optionally, the second power module further includes:

[0098] A heat dissipation substrate includes a first surface and a second surface opposite to each other, wherein the first surface of the heat dissipation substrate is fixed to the second surface of an insulating substrate in the second power module, and the second surface of the heat dissipation substrate dissipates heat.

[0099] A cover plate that covers the first surface of the insulating substrate in the second power module.

[0100] Optionally, the second surface of the heat dissipation substrate is a flat plate or has heat dissipation fins.

[0101] Optionally, the first power unit includes H power transistors connected in parallel, the first ends of the H power transistors are connected to each other as the first end of the first power unit, the second ends of the H power transistors are connected to each other as the second end of the first power unit, and the control ends of the H power transistors are connected to each other as the control end of the first power unit.

[0102] The second power unit includes I power transistors connected in parallel. The first ends of the I power transistors are connected to each other to form the first end of the second power unit. The second ends of the I power transistors are connected to each other to form the second end of the second power unit. The control ends of the I power transistors are connected to each other to form the control end of the second power unit.

[0103] The third power unit includes J diodes connected in parallel. The first terminals of the J diodes are connected to each other to form the first terminal of the third power unit, and the second terminals of the J diodes are connected to each other to form the second terminal of the third power unit.

[0104] H, I, and J are positive integers greater than or equal to 1.

[0105] Optionally, the first power unit includes H power transistors connected in parallel, the first ends of the H power transistors are connected to each other as the first end of the first power unit, the second ends of the H power transistors are connected to each other as the second end of the first power unit, and the control ends of the H power transistors are connected to each other as the control end of the first power unit.

[0106] The second power unit includes I power transistors connected in parallel. The first ends of the I power transistors are connected to each other to form the first end of the second power unit. The second ends of the I power transistors are connected to each other to form the second end of the second power unit. The control ends of the I power transistors are connected to each other to form the control end of the second power unit.

[0107] The fourth power unit includes K power transistors connected in parallel. The first terminals of the K power transistors are connected to each other to form the first terminal of the fourth power unit. The second terminals of the K power transistors are connected to each other to form the second terminal of the fourth power unit. The control terminals of the K power transistors are connected to each other to form the control terminal of the fourth power unit.

[0108] H, I, and K are positive integers greater than or equal to 1.

[0109] Optionally, the fifth power unit includes L power transistors connected in parallel, the first ends of the L power transistors are connected to each other as the first end of the fifth power unit, the second ends of the L power transistors are connected to each other as the second end of the fifth power unit, and the control ends of the L power transistors are connected to each other as the control end of the fifth power unit.

[0110] The sixth power unit includes M power transistors connected in parallel. The first ends of the M power transistors are connected to each other to form the first end of the sixth power unit. The second ends of the M power transistors are connected to each other to form the second end of the sixth power unit. The control ends of the M power transistors are connected to each other to form the control end of the sixth power unit.

[0111] The seventh power unit includes N diodes connected in parallel. The first terminals of the N diodes are connected to each other to form the first terminal of the seventh power unit, and the second terminals of the N diodes are connected to each other to form the second terminal of the seventh power unit.

[0112] L, M, and N are positive integers greater than or equal to 1.

[0113] Optionally, the fifth power unit includes L power transistors connected in parallel, the first ends of the L power transistors are connected to each other as the first end of the fifth power unit, the second ends of the L power transistors are connected to each other as the second end of the fifth power unit, and the control ends of the L power transistors are connected to each other as the control end of the fifth power unit.

[0114] The sixth power unit includes M power transistors connected in parallel. The first ends of the M power transistors are connected to each other to form the first end of the sixth power unit. The second ends of the M power transistors are connected to each other to form the second end of the sixth power unit. The control ends of the M power transistors are connected to each other to form the control end of the sixth power unit.

[0115] The eighth power unit includes P power transistors connected in parallel. The first terminals of the P power transistors are connected to each other to form the first terminal of the eighth power unit. The second terminals of the P power transistors are connected to each other to form the second terminal of the eighth power unit. The control terminals of the P power transistors are connected to each other to form the control terminal of the eighth power unit.

[0116] L, M, and P are positive integers greater than or equal to 1.

[0117] Optionally, the power transistor includes an insulated-gate bipolar transistor (IGBT) and a fast recovery diode (FCD). The gate of the IGBT serves as the control terminal of the power transistor, the collector of the IGBT is connected to the cathode of the FCD and serves as the first terminal of the power transistor, and the emitter of the IGBT is connected to the anode of the FCD and serves as the second terminal of the power transistor.

[0118] Alternatively, the power transistor may include a metal-oxide-semiconductor field-effect transistor (MOSFET), wherein the gate of the MOSFET serves as the control terminal of the power transistor, the drain of the MOSFET serves as the first terminal of the power transistor, and the source of the MOSFET serves as the second terminal of the power transistor.

[0119] Optionally, the diode is a silicon-based diode or a silicon carbide Schottky barrier diode, with the cathode of the diode serving as the first terminal and the anode of the diode serving as the second terminal.

[0120] Optionally, the first power module and the second power module have the same package shape.

[0121] According to a second aspect of this application, a first power module is provided, comprising:

[0122] DC positive terminal, first input terminal, first output terminal, first control terminal, second control terminal;

[0123] A first power unit, wherein a first terminal of the first power unit is electrically connected to the DC positive terminal, and a control terminal of the first power unit is electrically connected to the first control terminal;

[0124] A second power unit, wherein a first terminal of the second power unit is electrically connected to a second terminal of the first power unit, a second terminal of the second power unit is electrically connected to the first output terminal, and a control terminal of the second power unit is electrically connected to a second control terminal; and

[0125] The third power unit has a first end electrically connected to the second end of the first power unit and the first end of the second power unit, and the second end of the third power unit is electrically connected to the first input end.

[0126] Optionally, the first power module further includes:

[0127] The first transmitting end is electrically connected to the second end of the first power unit;

[0128] The second transmitting end is electrically connected to the second end of the second power unit.

[0129] According to another aspect of this application, a first power module is provided, comprising:

[0130] DC positive terminal, first input terminal, first output terminal, first control terminal, second control terminal, third control terminal;

[0131] A first power unit, wherein a first terminal of the first power unit is electrically connected to the DC positive terminal, and a control terminal of the first power unit is electrically connected to the first control terminal;

[0132] A second power unit, wherein a first terminal of the second power unit is electrically connected to a second terminal of the first power unit, a second terminal of the second power unit is electrically connected to the first output terminal, and a control terminal of the second power unit is electrically connected to a second control terminal; and

[0133] The fourth power unit has a first terminal electrically connected to the second terminal of the first power unit and the first terminal of the second power unit, a second terminal electrically connected to the first input terminal, and a control terminal electrically connected to the third control terminal.

[0134] Optionally, the first power module further includes:

[0135] The first transmitting end is electrically connected to the second end of the first power unit;

[0136] The second transmitting end is electrically connected to the second end of the second power unit;

[0137] The third transmitting end is electrically connected to the second end of the fourth power unit.

[0138] Optionally, the first power module further includes:

[0139] The first temperature sensor includes a first end of the first temperature sensor and a second end of the first temperature sensor;

[0140] The first temperature detection terminal is connected to the first terminal of the first temperature sensor;

[0141] The second temperature detection terminal is connected to the second terminal of the first temperature sensor.

[0142] Optionally, the first power module further includes:

[0143] The third output terminal is electrically connected to the second terminal of the first power unit and the first terminal of the second power unit, and is also electrically connected to the first terminal of the third power unit or the first terminal of the fourth power unit.

[0144] Optionally, the first power module further includes:

[0145] An insulating substrate includes a first surface and a second surface disposed opposite to each other. The first surface of the insulating substrate is provided with a first base island, a second base island, a third base island, a fourth base island, a fifth base island, a sixth base island, a seventh base island, an eighth base island, a ninth base island, a tenth base island, and an eleventh base island located in the middle of the first power module.

[0146] The first power unit is located on the first base island, and the first end of the first power unit is electrically connected to the first base island. The DC positive terminal is connected to the first base island to be electrically connected to the first end of the first power unit. The control terminal of the first power unit is electrically connected to the first control terminal via the third base island.

[0147] The second power unit is located on the second base island, and the first end of the second power unit is electrically connected to the second base island. The control end of the second power unit is electrically connected to the second control end via the sixth base island. The second end of the second power unit is also electrically connected to the first output end via the ninth base island.

[0148] The third power unit is located on the fifth base island, and its first end is electrically connected to the fifth base island. The second end of the third power unit is electrically connected to the first input terminal via the eighth base island.

[0149] Wherein, the second end of the first power unit is connected to the fifth base island to be electrically connected to the first end of the third power unit, and the first end of the second power unit is connected to the fifth base island to be electrically connected to the first end of the third power unit.

[0150] Optionally, the first power module further includes:

[0151] The housing has an insulating substrate located inside it. The housing leads out the DC positive terminal and the first input terminal located at the first end of the first power module. The housing leads out the first output terminal located at the second end of the first power module. The housing leads out the first control terminal and the second control terminal located at the third end of the first power module.

[0152] Optionally, the first power module further includes:

[0153] An insulating substrate includes a first surface and a second surface disposed opposite to each other. The first surface of the insulating substrate is provided with a first base island, a second base island, a third base island, a fourth base island, a fifth base island, a sixth base island, a seventh base island, an eighth base island, a ninth base island, a tenth base island, an eleventh base island, a twelfth base island, and a thirteenth base island located in the middle of the first power module.

[0154] The first power unit is located on the first base island, and the first end of the first power unit is electrically connected to the first base island. The DC positive terminal is connected to the first base island to be electrically connected to the first end of the first power unit. The control terminal of the first power unit is electrically connected to the first control terminal via the third base island.

[0155] The second power unit is located on the second base island, and the first end of the second power unit is electrically connected to the second base island. The control end of the second power unit is electrically connected to the second control end via the sixth base island. The second end of the second power unit is also electrically connected to the first output end via the ninth base island.

[0156] The fourth power unit is located on the fifth base island, and its first terminal is electrically connected to the fifth base island. Its second terminal is electrically connected to the first input terminal via the eighth base island. The control terminal of the fourth power unit is also electrically connected to the third control terminal via the thirteenth base island.

[0157] Wherein, the second end of the first power unit is connected to the fifth base island to be electrically connected to the first end of the fourth power unit, and the first end of the second power unit is connected to the fifth base island to be electrically connected to the first end of the fourth power unit.

[0158] Optionally, the first power module further includes:

[0159] The housing has an insulating substrate located inside it. The housing leads out the DC positive terminal and the first input terminal located at the first end of the first power module. The housing leads out the first output terminal located at the second end of the first power module. The housing leads out the first control terminal and the second control terminal located at the third end of the first power module. The housing leads out the third control terminal located at the fourth end of the first power module.

[0160] Optionally, the housing further extends a first temperature detection terminal and a second temperature detection terminal located at the fourth end of the first power module, the first end and the second end being opposite to each other, the third end and the fourth end being opposite to each other, and the first power module further includes:

[0161] A first temperature sensor is located on the insulating substrate. The first end of the first temperature sensor is electrically connected to the first temperature detection end via the tenth base island, and the second end of the first temperature sensor is electrically connected to the second temperature detection end via the eleventh base island.

[0162] Optionally, the housing also extends a third output terminal located at the second end of the first power module, the third output terminal being connected to the second base island to be electrically connected to the first end of the second power unit.

[0163] Optionally, the housing also extends the first transmitting end and the second transmitting end located at the third end of the first power module, the second end of the first power unit is connected to the fourth base island and electrically connected to the first transmitting end via the fourth base island, and the second end of the second power unit is electrically connected to the seventh base island via the ninth base island to be electrically connected to the second transmitting end.

[0164] Optionally, the housing also leads out the first transmitting end and the second transmitting end located at the third end of the first power module, and the housing also leads out the third transmitting end located at the fourth end of the first power module. The second end of the first power unit is electrically connected to the first transmitting end via the fourth base island, the second end of the second power unit is electrically connected to the seventh base island via the ninth base island to be electrically connected to the second transmitting end, and the second end of the fourth power unit is also electrically connected to the twelfth base island via the eighth base island to be electrically connected to the third transmitting end.

[0165] Optionally, the first power module further includes:

[0166] A heat dissipation substrate includes a first surface and a second surface opposite to each other, wherein the first surface of the heat dissipation substrate is fixed to the second surface of the insulating substrate in the first power module, and the second surface of the heat dissipation substrate dissipates heat.

[0167] A cover plate that covers the first surface of the insulating substrate in the first power module.

[0168] Optionally, the second surface of the heat dissipation substrate is a flat plate or has heat dissipation fins.

[0169] Optionally, the first power unit includes H power transistors connected in parallel, the first ends of the H power transistors are connected to each other as the first end of the first power unit, the second ends of the H power transistors are connected to each other as the second end of the first power unit, and the control ends of the H power transistors are connected to each other as the control end of the first power unit.

[0170] The second power unit includes I power transistors connected in parallel. The first ends of the I power transistors are connected to each other to form the first end of the second power unit. The second ends of the I power transistors are connected to each other to form the second end of the second power unit. The control ends of the I power transistors are connected to each other to form the control end of the second power unit.

[0171] The third power unit includes J diodes connected in parallel. The first terminals of the J diodes are connected to each other to form the first terminal of the third power unit, and the second terminals of the J diodes are connected to each other to form the second terminal of the third power unit.

[0172] H, I, and J are positive integers greater than or equal to 1.

[0173] Optionally, the first power unit includes H power transistors connected in parallel, the first ends of the H power transistors are connected to each other as the first end of the first power unit, the second ends of the H power transistors are connected to each other as the second end of the first power unit, and the control ends of the H power transistors are connected to each other as the control end of the first power unit.

[0174] The second power unit includes I power transistors connected in parallel. The first ends of the I power transistors are connected to each other to form the first end of the second power unit. The second ends of the I power transistors are connected to each other to form the second end of the second power unit. The control ends of the I power transistors are connected to each other to form the control end of the second power unit.

[0175] The fourth power unit includes K power transistors connected in parallel. The first ends of the K power transistors are connected to each other to form the first end of the fourth power unit. The second ends of the K power transistors are connected to each other to form the second end of the fourth power unit. The control ends of the K power transistors are connected to each other to form the control end of the fourth power unit. H, I, and K are positive integers greater than or equal to 1.

[0176] Optionally, the power transistor includes an insulated-gate bipolar transistor (IGBT) and a fast recovery diode (FCD). The gate of the IGBT serves as the control terminal of the power transistor, the collector of the IGBT is connected to the cathode of the FCD and serves as the first terminal of the power transistor, and the emitter of the IGBT is connected to the anode of the FCD and serves as the second terminal of the power transistor.

[0177] Alternatively, the power transistor may include a metal-oxide-semiconductor field-effect transistor (MOSFET), wherein the gate of the MOSFET serves as the control terminal of the power transistor, the drain of the MOSFET serves as the first terminal of the power transistor, and the source of the MOSFET serves as the second terminal of the power transistor.

[0178] Optionally, the diode is a silicon-based diode or a silicon carbide Schottky barrier diode, with the cathode of the diode serving as the first terminal and the anode of the diode serving as the second terminal.

[0179] According to a third aspect of this application, a second power module is provided, comprising:

[0180] DC negative terminal, second input terminal, second output terminal, fourth control terminal, fifth control terminal;

[0181] The fifth power unit has its first terminal electrically connected to the second output terminal, its second terminal electrically connected, and its control terminal electrically connected to the fourth control terminal.

[0182] A sixth power unit, wherein the first terminal of the sixth power unit is electrically connected to the second terminal of the fifth power unit, the second terminal of the sixth power unit is electrically connected to the DC negative terminal, and the control terminal of the sixth power unit is electrically connected to the fifth control terminal; and

[0183] The seventh power unit has its first end electrically connected to the second input terminal, and its second end electrically connected to the second end of the fifth power unit and the first end of the sixth power unit.

[0184] Optionally, the second power module further includes:

[0185] The fourth transmitting end is electrically connected to the second end of the fifth power unit;

[0186] The fifth transmitting end is electrically connected to the second end of the sixth power unit.

[0187] According to another aspect of this application, a second power module is provided, comprising:

[0188] DC negative terminal, second input terminal, second output terminal, fourth control terminal, fifth control terminal, sixth control terminal;

[0189] The fifth power unit has its first terminal electrically connected to the second output terminal, and its control terminal electrically connected to the fourth control terminal.

[0190] A sixth power unit, wherein the first terminal of the sixth power unit is electrically connected to the second terminal of the fifth power unit, the second terminal of the sixth power unit is electrically connected to the DC negative terminal, and the control terminal of the sixth power unit is electrically connected to the fifth control terminal; and

[0191] The eighth power unit has its first end electrically connected to the second input end, its second end electrically connected to the second end of the fifth power unit and the first end of the sixth power unit, and its control end electrically connected to the sixth control end.

[0192] Optionally, the second power module further includes:

[0193] The fourth transmitting end is electrically connected to the second end of the fifth power unit;

[0194] The fifth transmitting end is electrically connected to the second end of the sixth power unit;

[0195] The sixth transmitting end is electrically connected to the second end of the eighth power unit.

[0196] Optionally, the second power module further includes:

[0197] The second temperature sensor includes a first end of the second temperature sensor and a second end of the second temperature sensor.

[0198] The third temperature detection terminal is connected to the first terminal of the second temperature sensor;

[0199] The fourth temperature detection terminal is connected to the second terminal of the second temperature sensor.

[0200] Optionally, the second power module further includes:

[0201] The fourth output terminal is electrically connected to the second terminal of the fifth power unit, the first terminal of the sixth power unit, and the second terminal of the seventh power unit or the second terminal of the eighth power unit.

[0202] Optionally, the second power module further includes:

[0203] An insulating substrate includes a first surface and a second surface disposed opposite to each other. The first surface of the insulating substrate is provided with fourteenth, fifteenth, sixteenth, seventeenth, eighteenth, nineteenth, twentieth, twenty-first, twenty-second, twenty-third, and twenty-fourth base islands located in the middle of the second power module.

[0204] The fifth power unit is located on the fourteenth base island, and the first end of the fifth power unit is electrically connected to the fourteenth base island. The second output end is connected to the fourteenth base island to be electrically connected to the first end of the fifth power unit. The control end of the fifth power unit is electrically connected to the fourth control end via the sixteenth base island.

[0205] The sixth power unit is located on the fifteenth base island, and the first end of the sixth power unit is electrically connected to the fifteenth base island. The first end of the sixth power unit is also connected to the twenty-second base island via the fifteenth base island to be electrically connected to the second end of the fifth power unit. The control end of the sixth power unit is electrically connected to the fifth control end via the nineteenth base island. The second end of the sixth power unit is also electrically connected to the DC negative terminal via the twenty-first base island.

[0206] The seventh power unit is located on the eighteenth base island, and the first end of the seventh power unit is electrically connected to the eighteenth base island. The second input end is connected to the eighteenth base island to be electrically connected to the first end of the seventh power unit. The second end of the seventh power unit is electrically connected to the first end of the sixth power unit via the fifteenth base island.

[0207] Optionally, the second power module further includes:

[0208] The housing has an insulating substrate located inside it. The housing leads out the second input terminal and the DC negative terminal located at the first end of the second power module. The housing leads out the second output terminal located at the second end of the second power module. The housing leads out the fourth control terminal and the fifth control terminal located at the fourth end of the second power module.

[0209] Optionally, the second power module further includes:

[0210] An insulating substrate includes a first surface and a second surface disposed opposite to each other. The first surface of the insulating substrate is provided with fourteenth, fifteenth, sixteenth, seventeenth, eighteenth, nineteenth, twentieth, twenty-first, twenty-second, twenty-third, twenty-fourth, twenty-fifth, and twenty-sixth base islands located in the middle of the second power module.

[0211] The fifth power unit is located on the fourteenth base island, and the first end of the fifth power unit is electrically connected to the fourteenth base island. The second output end is connected to the fourteenth base island to be electrically connected to the first end of the fifth power unit. The control end of the fifth power unit is electrically connected to the fourth control end via the sixteenth base island.

[0212] The sixth power unit is located on the fifteenth base island, and the first end of the sixth power unit is electrically connected to the fifteenth base island. The first end of the sixth power unit is also connected to the twenty-second base island via the fifteenth base island to be electrically connected to the second end of the fifth power unit. The control end of the sixth power unit is electrically connected to the fifth control end via the nineteenth base island. The second end of the sixth power unit is also electrically connected to the DC negative terminal via the twenty-first base island.

[0213] The eighth power unit is located on the eighteenth base island, and the first end of the eighth power unit is electrically connected to the eighteenth base island. The second input end is connected to the eighteenth base island to be electrically connected to the first end of the eighth power unit. The second end of the eighth power unit is electrically connected to the first end of the sixth power unit via the fifteenth base island. The control end of the eighth power unit is also electrically connected to the sixth control end via the twenty-sixth base island.

[0214] Optionally, the second power module further includes:

[0215] The housing has an insulating substrate located inside it. The housing leads out the second input terminal and the DC negative terminal located at the first end of the second power module. The housing leads out the second output terminal located at the second end of the second power module. The housing leads out the fourth control terminal and the fifth control terminal located at the fourth end of the second power module. The housing leads out the sixth control terminal located at the third end of the second power module.

[0216] Optionally, the housing further extends a third temperature detection terminal and a fourth temperature detection terminal located at the third end of the second power module, with the first end and the second end opposite to each other, and the third end and the fourth end opposite to each other. The second power module further includes:

[0217] The second temperature sensor is located on the insulating substrate. The first end of the second temperature sensor is electrically connected to the third temperature detection end via the 23rd base island, and the second end of the second temperature sensor is electrically connected to the fourth temperature detection end via the 24th base island.

[0218] Optionally, the housing also extends a fourth output terminal located at the second end of the first power module, the fourth output terminal being connected to the second twelfth base island to be electrically connected to the second end of the fifth power unit.

[0219] Optionally, the housing also extends the fourth transmitter and the fifth transmitter located at the fourth end of the second power module. The second end of the fifth power unit is electrically connected to the seventeenth base island via the twenty-twelfth base island to be electrically connected to the fourth transmitter. The second end of the sixth power unit is connected to the twenty-tenth base island and electrically connected to the fifth transmitter via the twenty-tenth base island.

[0220] Optionally, the housing also leads out the fourth transmitter and the fifth transmitter located at the fourth end of the second power module, and the housing also leads out the sixth transmitter located at the third end of the second power module. The second end of the fifth power unit is electrically connected to the fourth transmitter via the twenty-second base island and the seventeenth base island. The second end of the sixth power unit is electrically connected to the fifth transmitter via the twenty-first base island. The second end of the eighth power unit is also electrically connected to the sixth transmitter via the twenty-fifth base island.

[0221] Optionally, the second power module further includes:

[0222] A heat dissipation substrate includes a first surface and a second surface opposite to each other, wherein the first surface of the heat dissipation substrate is fixed to the second surface of an insulating substrate in the second power module, and the second surface of the heat dissipation substrate dissipates heat.

[0223] A cover plate that covers the first surface of the insulating substrate in the second power module.

[0224] Optionally, the second surface of the heat dissipation substrate is a flat plate or has heat dissipation fins.

[0225] Optionally, the fifth power unit includes L power transistors connected in parallel, the first ends of the L power transistors are connected to each other as the first end of the fifth power unit, the second ends of the L power transistors are connected to each other as the second end of the fifth power unit, and the control ends of the L power transistors are connected to each other as the control end of the fifth power unit.

[0226] The sixth power unit includes M power transistors connected in parallel. The first ends of the M power transistors are connected to each other to form the first end of the sixth power unit. The second ends of the M power transistors are connected to each other to form the second end of the sixth power unit. The control ends of the M power transistors are connected to each other to form the control end of the sixth power unit.

[0227] The seventh power unit includes N diodes connected in parallel. The first terminals of the N diodes are connected to each other to form the first terminal of the seventh power unit, and the second terminals of the N diodes are connected to each other to form the second terminal of the seventh power unit.

[0228] L, M, and N are positive integers greater than or equal to 1.

[0229] Optionally, the fifth power unit includes L power transistors connected in parallel, the first ends of the L power transistors are connected to each other as the first end of the fifth power unit, the second ends of the L power transistors are connected to each other as the second end of the fifth power unit, and the control ends of the L power transistors are connected to each other as the control end of the fifth power unit.

[0230] The sixth power unit includes M power transistors connected in parallel. The first ends of the M power transistors are connected to each other to form the first end of the sixth power unit. The second ends of the M power transistors are connected to each other to form the second end of the sixth power unit. The control ends of the M power transistors are connected to each other to form the control end of the sixth power unit.

[0231] The eighth power unit includes P power transistors connected in parallel. The first terminals of the P power transistors are connected to each other to form the first terminal of the eighth power unit. The second terminals of the P power transistors are connected to each other to form the second terminal of the eighth power unit. The control terminals of the P power transistors are connected to each other to form the control terminal of the eighth power unit.

[0232] L, M, and P are positive integers greater than or equal to 1.

[0233] Optionally, the power transistor includes an insulated-gate bipolar transistor (IGBT) and a fast recovery diode (FCD). The gate of the IGBT serves as the control terminal of the power transistor, the collector of the IGBT is connected to the cathode of the FCD and serves as the first terminal of the power transistor, and the emitter of the IGBT is connected to the anode of the FCD and serves as the second terminal of the power transistor.

[0234] Alternatively, the power transistor may include a metal-oxide-semiconductor field-effect transistor (MOSFET), wherein the gate of the MOSFET serves as the control terminal of the power transistor, the drain of the MOSFET serves as the first terminal of the power transistor, and the source of the MOSFET serves as the second terminal of the power transistor.

[0235] Optionally, the diode is a silicon-based diode or a silicon carbide Schottky barrier diode, with the cathode of the diode serving as the first terminal and the anode of the diode serving as the second terminal.

[0236] The power module provided in this application comprises multiple power units encapsulated in a first power module and a second power module, respectively. The first power module has a DC positive terminal, and the second power module has a DC negative terminal. The first power module and the second power module are electrically connected and have a zero-potential terminal and an AC terminal respectively. This application uses two power modules to construct the power module, which can significantly reduce the number of packaged modules used in the entire power module, thereby reducing the overall cost, decreasing the overall size, optimizing the PCB layout and overall structure, and increasing the overall power density.

[0237] Furthermore, the first and second power modules in the power module of this application have the same package shape, which facilitates the optimized design of peripheral components of the whole system (such as driver boards, stacked busbars, etc.). Also, because the internal circuits of the two power modules are symmetrical, the heat generated by the power device losses in the two power modules is basically the same, which is beneficial for the optimized design of heat dissipation and temperature detection and protection circuits. Attached Figure Description

[0238] The above and other objects, features and advantages of the present invention will become clearer from the following description of embodiments of the present invention with reference to the accompanying drawings, in which:

[0239] Figure 1 A schematic diagram of a power module is shown.

[0240] Figure 2 This diagram shows a structural schematic of a power module provided according to a first embodiment of the present invention.

[0241] Figure 3 A circuit diagram of the first power module in the power module provided according to the first embodiment of the present invention is shown;

[0242] Figure 4 A perspective view of the first power module in the power module provided according to the first embodiment of the present invention is shown;

[0243] Figure 5 This diagram shows the packaging schematic of the first power module in the power module provided according to the first embodiment of the present invention;

[0244] Figure 6 A schematic diagram of the insulating substrate of the first power module in the power module provided according to the first embodiment of the present invention is shown;

[0245] Figure 7 A circuit diagram of the second power module in the power module provided according to the first embodiment of the present invention is shown;

[0246] Figure 8 A perspective view of the second power module in the power module provided according to the first embodiment of the present invention is shown;

[0247] Figure 9 A schematic diagram of the packaging of the second power module in the power module provided according to the first embodiment of the present invention is shown;

[0248] Figure 10 A schematic diagram of the insulating substrate of the second power module in the power module provided according to the first embodiment of the present invention is shown;

[0249] Figure 11A schematic diagram of the power module provided according to the second embodiment of the present invention is shown. Detailed Implementation

[0250] The present invention will now be described in more detail with reference to the accompanying drawings. For clarity, the various parts in the drawings are not drawn to scale. Furthermore, certain well-known parts may not be shown. Many specific details of the present invention are described below, but as those skilled in the art will understand, the present invention may be implemented without following these specific details.

[0251] Figure 1 A schematic diagram of a power module is shown.

[0252] like Figure 1 As shown, the existing power module 100 includes a DC positive terminal (DC+), a DC negative terminal (DC-), a zero potential terminal (N), an AC terminal (AC), a first power module 110, a second power module 120, and a third power module 130. The power module 100 is an ANPC (Active Neutral-Point Clamped) three-level circuit, and the first power module 110, the second power module 120, and the third power module 130 are three half-bridge power modules. The power module 100 is formed by connecting three half-bridge power units in series.

[0253] The power module 100 is constructed from three power modules and has a DC positive terminal (DC+), a DC negative terminal (DC-), a zero potential terminal (N), and an AC terminal (AC).

[0254] This invention provides a smaller, lower-cost power module. This invention can be presented in various forms, some of which will be described below.

[0255] Figure 2 A schematic diagram of the power module provided according to the first embodiment of the present invention is shown. Figure 3 A circuit diagram of the first power module in the power module provided according to the first embodiment of the present invention is shown. Figure 4 A perspective view of the first power module in the power module provided according to the first embodiment of the present invention is shown. Figure 5 This diagram shows the packaging schematic of the first power module in the power module provided according to the first embodiment of the present invention. Figure 6 A schematic diagram of the insulating substrate of the first power module in the power module provided according to the first embodiment of the present invention is shown. Figure 7 A circuit diagram of the second power module in the power module provided according to the first embodiment of the present invention is shown. Figure 8 A perspective view of the second power module in the power module provided according to the first embodiment of the present invention is shown. Figure 9This diagram shows the packaging schematic of the second power module in the power module provided according to the first embodiment of the present invention. Figure 10 A schematic diagram of the insulating substrate of the second power module in the power module provided according to the first embodiment of the present invention is shown.

[0256] like Figure 2 As shown, the power module 300 includes a DC positive terminal (DC+), a DC negative terminal (DC-), a zero-potential terminal (N), an AC terminal (AC), and multiple power units. These power units are respectively packaged in a first power module 310 and a second power module 320. The first power module 310 and the second power module 320 have, for example, identical package shapes. The first power module 310 leads out a DC positive terminal (DC+), and the second power module 320 leads out a DC negative terminal (DC-). The first power module 310 and the second power module 320 are electrically connected and lead out a zero-potential terminal (N) and an AC terminal (AC). The power module 300 is an INPC ("I" type Neutral-Point Clamped) three-level circuit.

[0257] Furthermore, such as Figure 3 , Figure 7 As shown, the first power module 310 further includes a first input terminal N1 and a first output terminal AC1, and the second power module 320 further includes a second input terminal N2 and a second output terminal AC2. The first input terminal N1 and the second input terminal N2 are connected as a zero potential terminal N, and the first output terminal AC1 and the second output terminal AC2 are connected as an AC terminal AC.

[0258] like Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, the first power module 310 also includes a first control terminal G1, a second control terminal G2, a first power unit T1, a second power unit T2, and a third power unit D3.

[0259] Furthermore, the first power module 310 also includes a third output terminal T2-C.

[0260] The first terminal of the first power unit T1 is electrically connected to the DC positive terminal DC+, the second terminal of the first power unit T1 is electrically connected to the third output terminal T2-C, and the control terminal of the first power unit T1 is electrically connected to the first control terminal G1.

[0261] The first end of the second power unit T2 is electrically connected to the second end and the third output end T2-C of the first power unit T1. The second end of the second power unit T2 is electrically connected to the first output end AC1. The control end of the second power unit T2 is electrically connected to the second control end G2.

[0262] The first terminal of the third power unit D3 is electrically connected to the second terminal of the first power unit T1, the first terminal of the second power unit T2, and the third output terminal T2-C. The second terminal of the third power unit D3 is electrically connected to the first input terminal N1.

[0263] Furthermore, the first power module 310 also includes a first transmitting terminal E1 and a second transmitting terminal E2. The first transmitting terminal E1 is electrically connected to the second terminal of the first power unit T1. The second transmitting terminal E2 is electrically connected to the second terminal of the second power unit T2.

[0264] Furthermore, the first power module 310 also includes a first temperature sensor RT1, a first temperature detection terminal R1, and a second temperature detection terminal R2. The first temperature sensor RT1 includes a first end and a second end. The first temperature detection terminal R1 is connected to the first end of the first temperature sensor RT1, and the second temperature detection terminal R2 is connected to the second end of the first temperature sensor RT1.

[0265] Further, the first power unit T1 includes H power transistors connected in parallel. The first ends of the H power transistors are connected to each other to form the first terminal of the first power unit T1, the second ends of the H power transistors are connected to each other to form the second terminal of the first power unit T1, and the control terminals of the H power transistors are connected to each other to form the control terminal of the first power unit T1. The second power unit T2 includes I power transistors connected in parallel. The first ends of the I power transistors are connected to each other to form the first terminal of the second power unit T2, the second ends of the I power transistors are connected to each other to form the second terminal of the second power unit T2, and the control terminals of the I power transistors are connected to each other to form the control terminal of the second power unit T2. The third power unit D3 includes J diodes connected in parallel. The first ends of the J diodes are connected to each other to form the first terminal of the third power unit D3, and the second ends of the J diodes are connected to each other to form the second terminal of the third power unit D3. H, I, and J are positive integers greater than or equal to 1. Specifically, in this embodiment, H=3, I=4, and J=3 are used as an example.

[0266] For example, the power transistor includes an insulated-gate bipolar transistor (IGBT) and a fast recovery diode (FCD). The gate of the IGBT serves as the control terminal of the power transistor, the collector of the IGBT is connected to the cathode of the FCD and serves as the first terminal of the power transistor, and the emitter of the IGBT is connected to the anode of the FCD and serves as the second terminal of the power transistor.

[0267] In an alternative embodiment, the power transistor includes a metal-oxide-semiconductor field-effect transistor (MOSFET), with the gate of the MOSFET serving as the control terminal of the power transistor, the drain of the MOSFET serving as the first terminal of the power transistor, and the source of the MOSFET serving as the second terminal of the power transistor.

[0268] For example, the diode is a silicon-based diode or a silicon carbide Schottky barrier diode, with the cathode of the diode serving as the first terminal and the anode of the diode serving as the second terminal.

[0269] Furthermore, the first power module 310 also includes an insulating substrate 311, a housing 312, and a cover plate 313.

[0270] The insulating substrate 311 includes a first surface and a second surface disposed opposite to each other. The first surface of the insulating substrate 311 is provided with a first base island 3111, a second base island 3112, a third base island 3113, a fourth base island 3114, a fifth base island 3115, a sixth base island 3116, a seventh base island 3117, an eighth base island 3118, a ninth base island 3119, a tenth base island 3120, and an eleventh base island 3121 located in the middle of the first power module 310.

[0271] The insulating substrate 311 is located inside and surrounded by the housing 312. The housing 312 leads out the DC positive terminal DC+ and the first input terminal N1 at the first end of the first power module 310; the housing 312 leads out the third output terminal T2-C and the first output terminal AC1 at the second end of the first power module 310; the housing 312 leads out the first control terminal G1, the second control terminal G2, the first transmitter terminal E1, and the second transmitter terminal E2 at the third end of the first power module 310; and the housing 312 leads out the first temperature detection terminal R1 and the second temperature detection terminal R2 at the fourth end of the first power module 310. The first and second ends are opposite each other, and the third and fourth ends are opposite each other.

[0272] The first temperature sensor RT1 is located on the insulating substrate 311. The first end of the first temperature sensor RT1 is electrically connected to the first temperature detection terminal R1 via the tenth base island 3120, and the second end of the first temperature sensor RT1 is electrically connected to the second temperature detection terminal R2 via the eleventh base island 3121.

[0273] The first power unit T1 is located on the first base island 3111. The H power transistors in the first power unit T1 include opposing first and second surfaces. The first surfaces of the H power transistors in the first power unit T1 lead out the first ends of the power transistors, and the second surfaces of the H power transistors in the first power unit T1 lead out the second ends of the power transistors and the control terminals of the power transistors. The first ends of the H power transistors in the first power unit T1 face the first surface of the insulating substrate 311 and are electrically connected to the first base island 3111. The DC positive terminal DC+ is connected to the first base island 3111 to be electrically connected to the first end of the first power unit T1. The second ends of the H power transistors in the first power unit T1 are all connected to the fourth base island 3114 and electrically connected to the first transmitter E1 via the fourth base island 3114. The control terminals of the H power transistors in the first power unit T1 are electrically connected to the first control terminal G1 via the third base island 3113.

[0274] The second power unit T2 is located on the second base island 3112. Each power transistor in the second power unit T2 has a first surface and a second surface facing each other. The first surface of each power transistor in the second power unit T2 leads to the first end of the power transistor, and the second surface of each power transistor in the second power unit T2 leads to the second end of the power transistor and the control terminal of the power transistor. The first end of each power transistor in the second power unit T2 faces the first surface of the insulating substrate 311 and is electrically connected to the second base island 3112. The third output terminal T2-C is connected to the second base island 3112 to be electrically connected to the first end of the second power unit T2. The control terminal of each power transistor in the second power unit T2 is electrically connected to the second control terminal G2 via the sixth base island 3116. The second ends of each power transistor in the second power unit T2 are all connected to the ninth base island 3119. The ninth base island 3119 and the seventh base island 3117 are electrically connected to the second transmitting terminal E2. The second end of each power transistor in the second power unit T2 is also electrically connected to the first output terminal AC1 via the ninth base island 3119.

[0275] The third power unit D3 is located on the fifth base island 3115. The J diodes in the third power unit D3 include opposing first and second surfaces. The first surface of the J diodes in the third power unit D3 leads out the first terminal of the diode, and the second surface of the J diodes in the third power unit D3 leads out the second terminal of the diode. The first terminal of the J diodes in the third power unit D3 faces the first surface of the insulating substrate 311 and is electrically connected to the fifth base island 3115. The second terminal of the J diodes in the third power unit D3 is electrically connected to the first input terminal N1 via the eighth base island 3118.

[0276] In the first power unit T1, the second ends of the H power transistors are connected to the fifth base island 3115 to be electrically connected to the first end of the third power unit D3, and the first ends of the I power transistors in the second power unit T2 are connected to the fifth base island 3115 via the second base island 3112 to be electrically connected to the first end of the third power unit D3.

[0277] Furthermore, the first power module 310 also includes a heat dissipation substrate (not shown in the figure, obscured), comprising a first surface and a second surface opposite each other. The first surface of the heat dissipation substrate is fixed to the second surface of the insulating substrate 311, for example, by processes such as welding or sintering, and the second surface of the heat dissipation substrate dissipates heat. A cover plate 313 covers the first surface of the insulating substrate 311. Exemplarily, the second surface of the heat dissipation substrate is a flat plate. Alternatively, the second surface of the heat dissipation substrate may have heat dissipation fins such as pins or fins to achieve better heat dissipation.

[0278] Furthermore, the third power unit D3 in the power module 300 is integrated by at least one diode, eliminating the need for a drive circuit and further reducing the overall cost and module size of the power module.

[0279] like Figure 7 , Figure 8 , Figure 9 , Figure 10 As shown, the second power module 320 also includes a fourth control terminal G5, a fifth control terminal G6, a fifth power unit T5, a sixth power unit T6, and a seventh power unit D7.

[0280] Furthermore, the second power module 320 also includes a fourth output terminal T6-C.

[0281] The first terminal of the fifth power unit T5 is electrically connected to the second output terminal AC2, the second terminal of the fifth power unit T5 is electrically connected to the fourth output terminal T6-C, and the control terminal of the fifth power unit T5 is electrically connected to the fourth control terminal G5.

[0282] The first terminal of the sixth power unit T6 is electrically connected to the second terminal and the fourth output terminal T6-C of the fifth power unit T5. The second terminal of the sixth power unit T6 is electrically connected to the DC negative terminal DC-. The control terminal of the sixth power unit T6 is electrically connected to the fifth control terminal G6.

[0283] The first terminal of the seventh power unit D7 is electrically connected to the second input terminal N2, and the second terminal of the seventh power unit D7 is electrically connected to the second terminal of the fifth power unit T5, the first terminal of the sixth power unit T6, and the fourth output terminal T6-C.

[0284] Furthermore, the second power module 320 also includes a fourth transmitter E5 and a fifth transmitter E6. The fourth transmitter E5 is electrically connected to the second terminal of the fifth power unit T5. The fifth transmitter E6 is electrically connected to the second terminal of the sixth power unit T6.

[0285] Furthermore, the second power module 320 also includes a second temperature sensor RT2, a third temperature detection terminal R3, and a fourth temperature detection terminal R4. The second temperature sensor RT2 includes a first terminal and a second terminal. The third temperature detection terminal R3 is connected to the first terminal of the second temperature sensor RT2, and the fourth temperature detection terminal R4 is connected to the second terminal of the second temperature sensor RT2.

[0286] Furthermore, the fifth power unit T5 includes L power transistors connected in parallel. The first ends of the L power transistors are connected to each other to form the first terminal of the fifth power unit T5, the second ends of the L power transistors are connected to each other to form the second terminal of the fifth power unit T5, and the control terminals of the L power transistors are connected to each other to form the control terminal of the fifth power unit T5. The sixth power unit T6 includes M power transistors connected in parallel. The first ends of the M power transistors are connected to each other to form the first terminal of the sixth power unit T6, the second ends of the M power transistors are connected to each other to form the second terminal of the sixth power unit T6, and the control terminals of the M power transistors are connected to each other to form the control terminal of the sixth power unit T6. The seventh power unit D7 includes N diodes connected in parallel. The first ends of the N diodes are connected to each other to form the first terminal of the seventh power unit D7, and the second ends of the N diodes are connected to each other to form the second terminal of the seventh power unit D7. L, M, and N are positive integers greater than or equal to 1. Specifically, in this embodiment, L=4, M=3, and N=3 are used as an example.

[0287] For example, the power transistor includes an insulated-gate bipolar transistor (IGBT) and a fast recovery diode (FCD). The gate of the IGBT serves as the control terminal of the power transistor, the collector of the IGBT is connected to the cathode of the FCD and serves as the first terminal of the power transistor, and the emitter of the IGBT is connected to the anode of the FCD and serves as the second terminal of the power transistor.

[0288] In an alternative embodiment, the power transistor includes a metal-oxide-semiconductor field-effect transistor (MOSFET), with the gate of the MOSFET serving as the control terminal of the power transistor, the drain of the MOSFET serving as the first terminal of the power transistor, and the source of the MOSFET serving as the second terminal of the power transistor.

[0289] For example, the diode is a silicon-based diode or a silicon carbide Schottky barrier diode, with the cathode of the diode serving as the first terminal and the anode of the diode serving as the second terminal.

[0290] Furthermore, the second power module 320 also includes an insulating substrate 321, a housing 322, and a cover plate 323.

[0291] The insulating substrate 321 includes a first surface and a second surface disposed opposite to each other. The first surface of the insulating substrate 321 is provided with fourteenth base island 3211, fifteenth base island 3212, sixteenth base island 3213, seventeenth base island 3214, eighteenth base island 3215, nineteenth base island 3216, twentieth base island 3217, twenty-first base island 3218, twenty-second base island 3219, twenty-third base island 3220, and twenty-fourth base island 3221 located in the middle of the second power module 320.

[0292] The insulating substrate 321 is located inside and surrounded by the housing 322. The housing 322 leads to the second input terminal N2 and the DC negative terminal DC- at the first end of the second power module 320; the housing 322 leads to the second output terminal AC2 and the fourth output terminal T4-C at the second end of the second power module 320; the housing 322 leads to the fourth control terminal G5, the fifth control terminal G6, the fourth transmitter terminal E5, and the fifth transmitter terminal E6 at the fourth end of the second power module 320; and the housing 322 leads to the third temperature detection terminal R3 and the fourth temperature detection terminal R4 at the third end of the second power module 320. The first and second ends are opposite each other, and the third and fourth ends are opposite each other.

[0293] The second temperature sensor RT2 is located on the insulating substrate 321. The first end of the second temperature sensor RT2 is electrically connected to the third temperature detection terminal R3 via the twenty-third base island 3220, and the second end of the second temperature sensor RT2 is electrically connected to the fourth temperature detection terminal R4 via the twenty-fourth base island 3221.

[0294] The fifth power unit T5 is located on the fourteenth base island 3211. The L power transistors in the fifth power unit T5 include opposing first and second surfaces. The first surface of the L power transistors in the fifth power unit T5 leads out the first end of the power transistor, and the second surface of the L power transistors in the fifth power unit T5 leads out the second end of the power transistor and the control terminal of the power transistor. The first ends of the L power transistors in the fifth power unit T5 face the first surface of the insulating substrate 321 and are electrically connected to the fourteenth base island 3211. The second output terminal AC2 is connected to the fourteenth base island 3211 to be electrically connected to the first end of the fifth power unit T5. The second ends of the L power transistors in the fifth power unit T5 are all connected to the twenty-second base island 3219. The twenty-second base island 3219 is electrically connected to the seventeenth base island 3214 to be electrically connected to the fourth transmitter E5. The fourth output terminal T6-C is connected to the twenty-second base island 3219 to be electrically connected to the second ends of the L power transistors in the fifth power unit T5. The control terminals of the L power transistors in the fifth power unit T5 are electrically connected to the fourth control terminal G5 via the sixteenth base island 3213.

[0295] The sixth power unit T6 is located on the fifteenth base island 3212. The M power transistors in the sixth power unit T6 include opposing first and second surfaces. The first surface of the M power transistors in the sixth power unit T6 leads out the first end of the power transistor, and the second surface of the M power transistors in the sixth power unit T6 leads out the second end of the power transistor and the control terminal of the power transistor. The first ends of the M power transistors in the sixth power unit T6 face the first surface of the insulating substrate 321 and are electrically connected to the fifteenth base island. The first ends of the M power transistors in the sixth power unit T6 are also connected to the twenty-second base island 3219 via the fifteenth base island 3212 to be electrically connected to the second end of the fifth power unit T5. The control terminals of the M power transistors in the sixth power unit T6 are electrically connected to the fifth control terminal G6 via the nineteenth base island 3216. The second ends of the M power transistors in the sixth power unit T6 are all connected to the twentieth base island 3217 and are electrically connected to the fifth transmitter terminal E6 via the twentieth base island 3217. The second ends of the M power transistors in the sixth power unit T6 are also electrically connected to the DC negative terminal DC- via the twenty-first base island 3218.

[0296] The seventh power unit D7 is located on the eighteenth base island 3215. The N diodes in the seventh power unit D7 include opposing first and second surfaces. The first surfaces of the N diodes in the seventh power unit D7 lead out their first terminals, and the second surfaces of the N diodes in the seventh power unit D7 lead out their second terminals. The first terminals of the N diodes in the seventh power unit D7 face the first surface of the insulating substrate 321 and are electrically connected to the eighteenth base island 3215. The second input terminal N2 is connected to the eighteenth base island 3215 to be electrically connected to the first terminal of the seventh power unit D7. The second terminal of the seventh power unit D7 is electrically connected to the first terminal of the sixth power unit T6 via the fifteenth base island 3212.

[0297] Furthermore, the second power module 320 also includes a heat dissipation substrate (not shown in the figure, obscured), comprising a first surface and a second surface opposite each other. The first surface of the heat dissipation substrate is fixed to the second surface of the insulating substrate 321, for example, by processes such as welding or sintering, and the second surface of the heat dissipation substrate dissipates heat. A cover plate 323 covers the first surface of the insulating substrate 321. Exemplarily, the second surface of the heat dissipation substrate is a flat plate. Alternatively, the second surface of the heat dissipation substrate may have heat dissipation fins such as pins or fins to achieve better heat dissipation.

[0298] Furthermore, the seventh power unit D7 in the power module 300 is integrated by at least one diode, eliminating the need for a drive circuit and further reducing the overall cost and module size of the power module.

[0299] For example, the third ( ) in the sixth power unit T6 of the second power module 320 Figure 9 The power transistors in the sixth power unit T6 (counting from left to right) are staggered from the first two power transistors, making the stray inductance distribution at the second end (emitter or source) of the three power transistors connected in parallel in the sixth power unit T6 more uniform, which can achieve better dynamic current sharing.

[0300] It should be noted that the first and second temperature sensors in this embodiment are, for example, thermistors.

[0301] Figure 11 A schematic diagram of the power module provided according to the second embodiment of the present invention is shown.

[0302] like Figure 11 As shown, the power module 200 includes a DC positive terminal (DC+), a DC negative terminal (DC-), a zero-potential terminal (N), an AC terminal (AC), and multiple power units. These power units are respectively encapsulated in a first power module 210 and a second power module 220. The first power module 210 leads out the DC positive terminal (DC+), and the second power module 220 leads out the DC negative terminal (DC-). The first power module 210 and the second power module 220 are electrically connected and lead out the zero-potential terminal (N) and the AC terminal (AC). The power module 200 is an ANPC (Active Neutral-Point Clamped) three-level circuit.

[0303] Compared to power module 300, the first power module 210 in power module 200 replaces the third power unit D3 with a fourth power unit T4, and adds a third control terminal and a third transmitter terminal. The first terminal of the fourth power unit T4 is connected to the second terminal of the first power unit T1, the first terminal of the second power unit T2, and the third output terminal T2-C. The second terminal of the fourth power unit T4 is connected to the first input terminal N1, and the control terminal of the fourth power unit T4 is connected to the third control terminal. The third transmitter terminal is connected to the second terminal of the fourth power unit T4.

[0304] The fourth power unit T4 includes K power transistors connected in parallel. The first terminals of the K power transistors are connected to each other to form the first terminal of the fourth power unit T4. The second terminals of the K power transistors are connected to each other to form the second terminal of the fourth power unit T4. The control terminals of the K power transistors are connected to each other to form the control terminal of the fourth power unit T4. K is a positive integer greater than or equal to 1.

[0305] The first power module 210 in the power module 200, based on the first power module 310, has an additional twelfth and thirteenth base islands added to its insulating substrate. A third control terminal and a third transmitter terminal are also led out from the housing at the fourth end of the first power module. The fourth power unit T4 is located on the fifth base island, and its first end is electrically connected to the fifth base island. Its second end is electrically connected to the first input terminal via the eighth base island. The second end of the fourth power unit T4 is also electrically connected to the twelfth base island via the eighth base island to connect to the third transmitter terminal. The control terminal of the fourth power unit T4 is also electrically connected to the third control terminal via the thirteenth base island. The second end of the first power unit T1 is connected to the fifth base island to connect to the first end of the fourth power unit T4. The first end of the second power unit T2 is connected to the fifth base island to connect to the first end of the fourth power unit T4.

[0306] Compared to power module 300, the second power module 220 in power module 200 replaces the seventh power unit D7 with the eighth power unit T8, and adds a sixth control terminal and a sixth transmitter terminal. The first terminal of the eighth power unit T8 is connected to the second input terminal, and the second terminal of the eighth power unit T8 is connected to the second terminal of the fifth power unit T5, the first terminal of the sixth power unit T6, and the fourth output terminal. The control terminal of the eighth power unit T8 is connected to the sixth control terminal. The sixth transmitter terminal is connected to the second terminal of the eighth power unit T8.

[0307] The eighth power unit T8 includes P power transistors connected in parallel. The first terminals of the P power transistors are connected to each other to form the first terminal of the eighth power unit T8. The second terminals of the P power transistors are connected to each other to form the second terminal of the eighth power unit T8. The control terminals of the P power transistors are connected to each other to form the control terminal of the eighth power unit T8. P is a positive integer greater than or equal to 1.

[0308] The second power module 220 in the power module 200, based on the second power module 320, has a twenty-fifth and twenty-sixth base island added to its insulating substrate. A sixth control terminal and a sixth transmitter terminal located at the third end of the second power module are also led out from the housing. The eighth power unit T8 is located on the fifth base island, and its first end is electrically connected to the fifth base island. Its second input terminal is connected to the fifth base island to be electrically connected to the first end of the eighth power unit T8. The second end of the eighth power unit T8 is electrically connected to the first end of the sixth power unit T6 via the second base island. The second end of the eighth power unit T8 is also electrically connected to the sixth transmitter terminal via the twenty-fifth base island. The control terminal of the eighth power unit T8 is also electrically connected to the sixth control terminal via the twenty-sixth base island.

[0309] The power module provided in this application comprises multiple power units encapsulated in a first power module and a second power module, respectively. The first power module has a DC positive terminal, and the second power module has a DC negative terminal. The first power module and the second power module are electrically connected and have a zero-potential terminal and an AC terminal respectively. This application uses two power modules to construct the power module, which can significantly reduce the number of packaged modules used in the entire power module, thereby reducing the overall cost, decreasing the overall size, optimizing the PCB layout and overall structure, and increasing the overall power density.

[0310] Furthermore, the first and second power modules in the power module of this application have the same package shape, which facilitates the optimized design of peripheral components of the whole system (such as driver boards, stacked busbars, etc.). Also, because the internal circuits of the two power modules are symmetrical, the heat generated by the power device losses in the two power modules is basically the same, which is beneficial for the optimized design of heat dissipation and temperature detection and protection circuits.

[0311] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0312] As described above, these embodiments of the present invention do not exhaustively cover all details, nor do they limit the invention to the specific embodiments described. Clearly, many modifications and variations can be made based on the above description. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to effectively utilize the present invention and its modifications. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A power module, characterized in that, include: DC positive terminal, DC negative terminal, zero potential terminal, AC terminal; A first power module and a second power module, wherein the first power module leads out the DC positive terminal and the second power module leads out the DC negative terminal, the first power module further includes a first input terminal and a first output terminal, and the second power module further includes a second input terminal and a second output terminal, the first input terminal and the second input terminal are connected as the zero potential terminal of the power module, and the first output terminal and the second output terminal are connected as the AC terminal of the power module.

2. The power module according to claim 1, characterized in that, The first power module further includes: First control terminal, second control terminal; A first power unit, wherein a first terminal of the first power unit is electrically connected to the DC positive terminal, and a control terminal of the first power unit is electrically connected to the first control terminal; A second power unit, wherein a first terminal of the second power unit is electrically connected to a second terminal of the first power unit, a second terminal of the second power unit is electrically connected to the first output terminal, and a control terminal of the second power unit is electrically connected to a second control terminal; and The third power unit has a first end electrically connected to the second end of the first power unit and the first end of the second power unit, and the second end of the third power unit is electrically connected to the first input end.

3. The power module according to claim 2, characterized in that, The first power module further includes: The first transmitting end is electrically connected to the second end of the first power unit; The second transmitting end is electrically connected to the second end of the second power unit.

4. The power module according to claim 1, characterized in that, The first power module further includes: First control terminal, second control terminal, third control terminal; A first power unit, wherein a first terminal of the first power unit is electrically connected to the DC positive terminal, and a control terminal of the first power unit is electrically connected to the first control terminal; A second power unit, wherein a first terminal of the second power unit is electrically connected to a second terminal of the first power unit, a second terminal of the second power unit is electrically connected to the first output terminal, and a control terminal of the second power unit is electrically connected to a second control terminal; and The fourth power unit has a first terminal electrically connected to the second terminal of the first power unit and the first terminal of the second power unit, a second terminal electrically connected to the first input terminal, and a control terminal electrically connected to the third control terminal.

5. The power module according to claim 4, characterized in that, The first power module further includes: The first transmitting end is electrically connected to the second end of the first power unit; The second transmitting end is electrically connected to the second end of the second power unit; The third transmitting end is electrically connected to the second end of the fourth power unit.

6. The power module according to any one of claims 2-5, characterized in that, The first power module further includes: The first temperature sensor includes a first end of the first temperature sensor and a second end of the first temperature sensor; The first temperature detection terminal is connected to the first terminal of the first temperature sensor; The second temperature detection terminal is connected to the second terminal of the first temperature sensor.

7. The power module according to any one of claims 2-5, characterized in that, The first power module further includes: The third output terminal is electrically connected to the second terminal of the first power unit and the first terminal of the second power unit, and is also electrically connected to the first terminal of the third power unit or the first terminal of the fourth power unit.

8. The power module according to claim 2, characterized in that, The first power module further includes: An insulating substrate includes a first surface and a second surface disposed opposite to each other. The first surface of the insulating substrate is provided with a first base island, a second base island, a third base island, a fourth base island, a fifth base island, a sixth base island, a seventh base island, an eighth base island, a ninth base island, a tenth base island, and an eleventh base island located in the middle of the first power module. The first power unit is located on the first base island, and the first end of the first power unit is electrically connected to the first base island. The DC positive terminal is connected to the first base island to be electrically connected to the first end of the first power unit. The control terminal of the first power unit is electrically connected to the first control terminal via the third base island. The second power unit is located on the second base island, and the first end of the second power unit is electrically connected to the second base island. The control end of the second power unit is electrically connected to the second control end via the sixth base island. The second end of the second power unit is also electrically connected to the first output end via the ninth base island. The third power unit is located on the fifth base island, and its first end is electrically connected to the fifth base island. The second end of the third power unit is electrically connected to the first input terminal via the eighth base island. Wherein, the second end of the first power unit is connected to the fifth base island to be electrically connected to the first end of the third power unit, and the first end of the second power unit is connected to the fifth base island to be electrically connected to the first end of the third power unit.

9. The power module according to claim 8, characterized in that, The first power module further includes: The housing has an insulating substrate located inside it. The housing leads out the DC positive terminal and the first input terminal located at the first end of the first power module. The housing leads out the first output terminal located at the second end of the first power module. The housing leads out the first control terminal and the second control terminal located at the third end of the first power module.

10. The power module according to claim 4, characterized in that, The first power module further includes: An insulating substrate includes a first surface and a second surface disposed opposite to each other. The first surface of the insulating substrate is provided with a first base island, a second base island, a third base island, a fourth base island, a fifth base island, a sixth base island, a seventh base island, an eighth base island, a ninth base island, a tenth base island, an eleventh base island, a twelfth base island, and a thirteenth base island located in the middle of the first power module. The first power unit is located on the first base island, and the first end of the first power unit is electrically connected to the first base island. The DC positive terminal is connected to the first base island to be electrically connected to the first end of the first power unit. The control terminal of the first power unit is electrically connected to the first control terminal via the third base island. The second power unit is located on the second base island, and the first end of the second power unit is electrically connected to the second base island. The control end of the second power unit is electrically connected to the second control end via the sixth base island. The second end of the second power unit is also electrically connected to the first output end via the ninth base island. The fourth power unit is located on the fifth base island, and its first terminal is electrically connected to the fifth base island. Its second terminal is electrically connected to the first input terminal via the eighth base island. The control terminal of the fourth power unit is also electrically connected to the third control terminal via the thirteenth base island. Wherein, the second end of the first power unit is connected to the fifth base island to be electrically connected to the first end of the fourth power unit, and the first end of the second power unit is connected to the fifth base island to be electrically connected to the first end of the fourth power unit.

11. The power module according to claim 10, characterized in that, The first power module further includes: The housing has an insulating substrate located inside it. The housing leads out the DC positive terminal and the first input terminal located at the first end of the first power module. The housing leads out the first output terminal located at the second end of the first power module. The housing leads out the first control terminal and the second control terminal located at the third end of the first power module. The housing leads out the third control terminal located at the fourth end of the first power module.

12. The power module according to claim 9 or 11, characterized in that, The housing also extends to a first temperature detection terminal and a second temperature detection terminal located at the fourth end of the first power module, with the first end and the second end opposite to each other, and the third end opposite to the fourth end. The first power module further includes: A first temperature sensor is located on the insulating substrate. The first end of the first temperature sensor is electrically connected to the first temperature detection end via the tenth base island, and the second end of the first temperature sensor is electrically connected to the second temperature detection end via the eleventh base island.

13. The power module according to claim 9 or 11, characterized in that, The housing also extends a third output terminal located at the second end of the first power module, the third output terminal being connected to the second base island to be electrically connected to the first end of the second power unit.

14. The power module according to claim 9, characterized in that, The housing also leads out a first transmitter and a second transmitter located at the third end of the first power module. The second end of the first power unit is connected to the fourth base island and electrically connected to the first transmitter via the fourth base island. The second end of the second power unit is electrically connected to the seventh base island via the ninth base island to be electrically connected to the second transmitter.

15. The power module according to claim 11, characterized in that, The housing also leads out a first transmitter and a second transmitter located at the third end of the first power module. The housing also leads out a third transmitter located at the fourth end of the first power module. The second end of the first power unit is electrically connected to the first transmitter via the fourth base island. The second end of the second power unit is electrically connected to the second transmitter via the ninth base island and the seventh base island. The second end of the fourth power unit is also electrically connected to the third transmitter via the eighth base island and the twelfth base island.

16. The power module according to claim 1, characterized in that, The second power module also includes: Fourth control terminal, fifth control terminal; The fifth power unit has its first terminal electrically connected to the second output terminal, its second terminal electrically connected, and its control terminal electrically connected to the fourth control terminal. A sixth power unit, wherein the first terminal of the sixth power unit is electrically connected to the second terminal of the fifth power unit, the second terminal of the sixth power unit is electrically connected to the DC negative terminal, and the control terminal of the sixth power unit is electrically connected to the fifth control terminal; and The seventh power unit has its first end electrically connected to the second input terminal, and its second end electrically connected to the second end of the fifth power unit and the first end of the sixth power unit.

17. The power module according to claim 16, characterized in that, The second power module also includes: The fourth transmitting end is electrically connected to the second end of the fifth power unit; The fifth transmitting end is electrically connected to the second end of the sixth power unit.

18. The power module according to claim 1, characterized in that, The second power module also includes: Fourth control terminal, fifth control terminal, sixth control terminal; The fifth power unit has its first terminal electrically connected to the second output terminal, and its control terminal electrically connected to the fourth control terminal. A sixth power unit, wherein the first terminal of the sixth power unit is electrically connected to the second terminal of the fifth power unit, the second terminal of the sixth power unit is electrically connected to the DC negative terminal, and the control terminal of the sixth power unit is electrically connected to the fifth control terminal; and The eighth power unit has its first end electrically connected to the second input end, its second end electrically connected to the second end of the fifth power unit and the first end of the sixth power unit, and its control end electrically connected to the sixth control end.

19. The power module according to claim 18, characterized in that, The second power module also includes: The fourth transmitting end is electrically connected to the second end of the fifth power unit; The fifth transmitting end is electrically connected to the second end of the sixth power unit; The sixth transmitting end is electrically connected to the second end of the eighth power unit.

20. The power module according to any one of claims 16-19, characterized in that, The second power module also includes: The second temperature sensor includes a first end of the second temperature sensor and a second end of the second temperature sensor. The third temperature detection terminal is connected to the first terminal of the second temperature sensor; The fourth temperature detection terminal is connected to the second terminal of the second temperature sensor.

21. The power module according to any one of claims 16-19, characterized in that, The second power module also includes: The fourth output terminal is electrically connected to the second terminal of the fifth power unit, the first terminal of the sixth power unit, and the second terminal of the seventh power unit or the second terminal of the eighth power unit.

22. The power module according to claim 16, characterized in that, The second power module also includes: An insulating substrate includes a first surface and a second surface disposed opposite to each other. The first surface of the insulating substrate is provided with fourteenth, fifteenth, sixteenth, seventeenth, eighteenth, nineteenth, twentieth, twenty-first, twenty-second, twenty-third, and twenty-fourth base islands located in the middle of the second power module. The fifth power unit is located on the fourteenth base island, and the first end of the fifth power unit is electrically connected to the fourteenth base island. The second output end is connected to the fourteenth base island to be electrically connected to the first end of the fifth power unit. The control end of the fifth power unit is electrically connected to the fourth control end via the sixteenth base island. The sixth power unit is located on the fifteenth base island, and the first end of the sixth power unit is electrically connected to the fifteenth base island. The first end of the sixth power unit is also connected to the twenty-second base island via the fifteenth base island to be electrically connected to the second end of the fifth power unit. The control end of the sixth power unit is electrically connected to the fifth control end via the nineteenth base island. The second end of the sixth power unit is also electrically connected to the DC negative terminal via the twenty-first base island. The seventh power unit is located on the eighteenth base island, and the first end of the seventh power unit is electrically connected to the eighteenth base island. The second input end is connected to the eighteenth base island to be electrically connected to the first end of the seventh power unit. The second end of the seventh power unit is electrically connected to the first end of the sixth power unit via the fifteenth base island.

23. The power module according to claim 22, characterized in that, The second power module also includes: The housing has an insulating substrate located inside it. The housing leads out the second input terminal and the DC negative terminal located at the first end of the second power module. The housing leads out the second output terminal located at the second end of the second power module. The housing leads out the fourth control terminal and the fifth control terminal located at the fourth end of the second power module.

24. The power module according to claim 18, characterized in that, The second power module also includes: An insulating substrate includes a first surface and a second surface disposed opposite to each other. The first surface of the insulating substrate is provided with fourteenth, fifteenth, sixteenth, seventeenth, eighteenth, nineteenth, twentieth, twenty-first, twenty-second, twenty-third, twenty-fourth, twenty-fifth, and twenty-sixth base islands located in the middle of the second power module. The fifth power unit is located on the fourteenth base island, and the first end of the fifth power unit is electrically connected to the fourteenth base island. The second output end is connected to the fourteenth base island to be electrically connected to the first end of the fifth power unit. The control end of the fifth power unit is electrically connected to the fourth control end via the sixteenth base island. The sixth power unit is located on the fifteenth base island, and the first end of the sixth power unit is electrically connected to the fifteenth base island. The first end of the sixth power unit is also connected to the twenty-second base island via the fifteenth base island to be electrically connected to the second end of the fifth power unit. The control end of the sixth power unit is electrically connected to the fifth control end via the nineteenth base island. The second end of the sixth power unit is also electrically connected to the DC negative terminal via the twenty-first base island. The eighth power unit is located on the eighteenth base island, and the first end of the eighth power unit is electrically connected to the eighteenth base island. The second input end is connected to the eighteenth base island to be electrically connected to the first end of the eighth power unit. The second end of the eighth power unit is electrically connected to the first end of the sixth power unit via the fifteenth base island. The control end of the eighth power unit is also electrically connected to the sixth control end via the twenty-sixth base island.

25. The power module according to claim 24, characterized in that, The second power module also includes: The housing has an insulating substrate located inside it. The housing leads out the second input terminal and the DC negative terminal located at the first end of the second power module. The housing leads out the second output terminal located at the second end of the second power module. The housing leads out the fourth control terminal and the fifth control terminal located at the fourth end of the second power module. The housing leads out the sixth control terminal located at the third end of the second power module.

26. The power module according to claim 23 or 25, characterized in that, The housing also extends a third temperature detection terminal and a fourth temperature detection terminal located at the third end of the second power module, with the first end and the second end opposite to each other, and the third end and the fourth end opposite to each other. The second power module further includes: The second temperature sensor is located on the insulating substrate. The first end of the second temperature sensor is electrically connected to the third temperature detection end via the 23rd base island, and the second end of the second temperature sensor is electrically connected to the fourth temperature detection end via the 24th base island.

27. The power module according to claim 23 or 25, characterized in that, The housing also extends a fourth output terminal located at the second end of the first power module, which is connected to the second twelfth base island to be electrically connected to the second end of the fifth power unit.

28. The power module according to claim 23, characterized in that, The housing also leads out a fourth transmitter and a fifth transmitter located at the fourth end of the second power module. The second end of the fifth power unit is electrically connected to the seventeenth base island via the twenty-twelfth base island to be electrically connected to the fourth transmitter. The second end of the sixth power unit is connected to the twenty-tenth base island and electrically connected to the fifth transmitter via the twenty-tenth base island.

29. The power module according to claim 25, characterized in that, The housing also leads out a fourth transmitter and a fifth transmitter located at the fourth end of the second power module. The housing also leads out a sixth transmitter located at the third end of the second power module. The second end of the fifth power unit is electrically connected to the seventeenth base island via the twenty-twelfth base island to be electrically connected to the fourth transmitter. The second end of the sixth power unit is electrically connected to the fifth transmitter via the twenty-tenth base island. The second end of the eighth power unit is also electrically connected to the sixth transmitter via the twenty-fifth base island.

30. The power module according to claim 8 or 10, characterized in that, The first power module further includes: A heat dissipation substrate includes a first surface and a second surface opposite to each other, wherein the first surface of the heat dissipation substrate is fixed to the second surface of the insulating substrate in the first power module, and the second surface of the heat dissipation substrate dissipates heat. A cover plate that covers the first surface of the insulating substrate in the first power module.

31. The power module according to claim 22 or 24, characterized in that, The second power module also includes: A heat dissipation substrate includes a first surface and a second surface opposite to each other, wherein the first surface of the heat dissipation substrate is fixed to the second surface of an insulating substrate in the second power module, and the second surface of the heat dissipation substrate dissipates heat. A cover plate that covers the first surface of the insulating substrate in the second power module.

32. The power module according to any one of claims 8, 10, 22, and 24, characterized in that, The second surface of the heat dissipation substrate in the first power module is a flat plate or has heat dissipation fins, and the second surface of the heat dissipation substrate in the second power module is a flat plate or has heat dissipation fins.

33. The power module according to claim 2, characterized in that, The first power unit includes H power transistors connected in parallel. The first ends of the H power transistors are connected to each other to form the first end of the first power unit. The second ends of the H power transistors are connected to each other to form the second end of the first power unit. The control ends of the H power transistors are connected to each other to form the control end of the first power unit. The second power unit includes I power transistors connected in parallel. The first ends of the I power transistors are connected to each other to form the first end of the second power unit. The second ends of the I power transistors are connected to each other to form the second end of the second power unit. The control ends of the I power transistors are connected to each other to form the control end of the second power unit. The third power unit includes J diodes connected in parallel. The first terminals of the J diodes are connected to each other to form the first terminal of the third power unit, and the second terminals of the J diodes are connected to each other to form the second terminal of the third power unit. H, I, and J are positive integers greater than or equal to 1.

34. The power module according to claim 4, characterized in that, The first power unit includes H power transistors connected in parallel. The first ends of the H power transistors are connected to each other to form the first end of the first power unit. The second ends of the H power transistors are connected to each other to form the second end of the first power unit. The control ends of the H power transistors are connected to each other to form the control end of the first power unit. The second power unit includes I power transistors connected in parallel. The first ends of the I power transistors are connected to each other to form the first end of the second power unit. The second ends of the I power transistors are connected to each other to form the second end of the second power unit. The control ends of the I power transistors are connected to each other to form the control end of the second power unit. The fourth power unit includes K power transistors connected in parallel. The first terminals of the K power transistors are connected to each other to form the first terminal of the fourth power unit. The second terminals of the K power transistors are connected to each other to form the second terminal of the fourth power unit. The control terminals of the K power transistors are connected to each other to form the control terminal of the fourth power unit. H, I, and K are positive integers greater than or equal to 1.

35. The power module according to claim 16, characterized in that, The fifth power unit includes L power transistors connected in parallel. The first ends of the L power transistors are connected to each other to form the first end of the fifth power unit. The second ends of the L power transistors are connected to each other to form the second end of the fifth power unit. The control ends of the L power transistors are connected to each other to form the control end of the fifth power unit. The sixth power unit includes M power transistors connected in parallel. The first ends of the M power transistors are connected to each other to form the first end of the sixth power unit. The second ends of the M power transistors are connected to each other to form the second end of the sixth power unit. The control ends of the M power transistors are connected to each other to form the control end of the sixth power unit. The seventh power unit includes N diodes connected in parallel. The first terminals of the N diodes are connected to each other to form the first terminal of the seventh power unit, and the second terminals of the N diodes are connected to each other to form the second terminal of the seventh power unit. L, M, and N are positive integers greater than or equal to 1.

36. The power module according to claim 18, characterized in that, The fifth power unit includes L power transistors connected in parallel. The first ends of the L power transistors are connected to each other to form the first end of the fifth power unit. The second ends of the L power transistors are connected to each other to form the second end of the fifth power unit. The control ends of the L power transistors are connected to each other to form the control end of the fifth power unit. The sixth power unit includes M power transistors connected in parallel. The first ends of the M power transistors are connected to each other to form the first end of the sixth power unit. The second ends of the M power transistors are connected to each other to form the second end of the sixth power unit. The control ends of the M power transistors are connected to each other to form the control end of the sixth power unit. The eighth power unit includes P power transistors connected in parallel. The first terminals of the P power transistors are connected to each other to form the first terminal of the eighth power unit. The second terminals of the P power transistors are connected to each other to form the second terminal of the eighth power unit. The control terminals of the P power transistors are connected to each other to form the control terminal of the eighth power unit. L, M, and P are positive integers greater than or equal to 1.

37. The power module according to any one of claims 33-36, characterized in that, The power transistor includes an insulated-gate bipolar transistor (IGBT) and a fast recovery diode (FCD). The gate of the IGBT serves as the control terminal of the power transistor. The collector of the IGBT is connected to the cathode of the FCD and serves as the first terminal of the power transistor. The emitter of the IGBT is connected to the anode of the FCD and serves as the second terminal of the power transistor. Alternatively, the power transistor may include a metal-oxide-semiconductor field-effect transistor (MOSFET), wherein the gate of the MOSFET serves as the control terminal of the power transistor, the drain of the MOSFET serves as the first terminal of the power transistor, and the source of the MOSFET serves as the second terminal of the power transistor.

38. The power module according to claim 33 or 35, characterized in that, The diode is a silicon-based diode or a silicon carbide Schottky barrier diode, with the cathode of the diode serving as the first terminal and the anode of the diode serving as the second terminal.

39. The power module according to claim 1, characterized in that, The first power module and the second power module have the same package shape.

40. A first power module, characterized in that, include: DC positive terminal, first input terminal, first output terminal, first control terminal, second control terminal; A first power unit, wherein a first terminal of the first power unit is electrically connected to the DC positive terminal, and a control terminal of the first power unit is electrically connected to the first control terminal; The second power unit has a first terminal electrically connected to the second terminal of the first power unit, a second terminal electrically connected to the first output terminal, and a control terminal electrically connected to the second control terminal. as well as The third power unit has a first end electrically connected to the second end of the first power unit and the first end of the second power unit, and the second end of the third power unit is electrically connected to the first input end.

41. The first power module according to claim 40, characterized in that, The first power module further includes: The first transmitting end is electrically connected to the second end of the first power unit; The second transmitting end is electrically connected to the second end of the second power unit.

42. The first power module according to claim 40, characterized in that, The first power module further includes: An insulating substrate includes a first surface and a second surface disposed opposite to each other. The first surface of the insulating substrate is provided with a first base island, a second base island, a third base island, a fourth base island, a fifth base island, a sixth base island, a seventh base island, an eighth base island, a ninth base island, a tenth base island, and an eleventh base island located in the middle of the first power module. The first power unit is located on the first base island, and the first end of the first power unit is electrically connected to the first base island. The DC positive terminal is connected to the first base island to be electrically connected to the first end of the first power unit. The control terminal of the first power unit is electrically connected to the first control terminal via the third base island. The second power unit is located on the second base island, and the first end of the second power unit is electrically connected to the second base island. The control end of the second power unit is electrically connected to the second control end via the sixth base island. The second end of the second power unit is also electrically connected to the first output end via the ninth base island. The third power unit is located on the fifth base island, and its first end is electrically connected to the fifth base island. The second end of the third power unit is electrically connected to the first input terminal via the eighth base island. Wherein, the second end of the first power unit is connected to the fifth base island to be electrically connected to the first end of the third power unit, and the first end of the second power unit is connected to the fifth base island to be electrically connected to the first end of the third power unit.

43. The first power module according to claim 42, characterized in that, The first power module further includes: The housing has an insulating substrate located inside it. The housing leads out the DC positive terminal and the first input terminal located at the first end of the first power module. The housing leads out the first output terminal located at the second end of the first power module. The housing leads out the first control terminal and the second control terminal located at the third end of the first power module.

44. The first power module according to claim 43, characterized in that, The housing also leads out a first transmitter and a second transmitter located at the third end of the first power module. The second end of the first power unit is connected to the fourth base island and electrically connected to the first transmitter via the fourth base island. The second end of the second power unit is electrically connected to the seventh base island via the ninth base island to be electrically connected to the second transmitter.

45. The first power module according to claim 40, characterized in that, The first power unit includes H power transistors connected in parallel. The first ends of the H power transistors are connected to each other to form the first end of the first power unit. The second ends of the H power transistors are connected to each other to form the second end of the first power unit. The control ends of the H power transistors are connected to each other to form the control end of the first power unit. The second power unit includes I power transistors connected in parallel. The first ends of the I power transistors are connected to each other to form the first end of the second power unit. The second ends of the I power transistors are connected to each other to form the second end of the second power unit. The control ends of the I power transistors are connected to each other to form the control end of the second power unit. The third power unit includes J diodes connected in parallel. The first terminals of the J diodes are connected to each other to form the first terminal of the third power unit, and the second terminals of the J diodes are connected to each other to form the second terminal of the third power unit. H, I, and J are positive integers greater than or equal to 1.

46. ​​The first power module according to claim 45, characterized in that, The diode is a silicon-based diode or a silicon carbide Schottky barrier diode, with the cathode of the diode serving as the first terminal and the anode of the diode serving as the second terminal.

47. The first power module according to any one of claims 40-41, characterized in that, The first power module further includes: The first temperature sensor includes a first end of the first temperature sensor and a second end of the first temperature sensor; The first temperature detection terminal is connected to the first terminal of the first temperature sensor; The second temperature detection terminal is connected to the second terminal of the first temperature sensor.

48. The first power module according to any one of claims 40-41, characterized in that, The first power module further includes: The third output terminal is electrically connected to the second terminal of the first power unit and the first terminal of the second power unit, and is also electrically connected to the first terminal of the third power unit or the first terminal of the fourth power unit.

49. The first power module according to claim 43, characterized in that, The housing also extends to a first temperature detection terminal and a second temperature detection terminal located at the fourth end of the first power module, with the first end and the second end opposite to each other, and the third end opposite to the fourth end. The first power module further includes: A first temperature sensor is located on the insulating substrate. The first end of the first temperature sensor is electrically connected to the first temperature detection end via the tenth base island, and the second end of the first temperature sensor is electrically connected to the second temperature detection end via the eleventh base island.

50. The first power module according to claim 43, characterized in that, The housing also extends a third output terminal located at the second end of the first power module, the third output terminal being connected to the second base island to be electrically connected to the first end of the second power unit.

51. The first power module according to claim 42, characterized in that, The first power module further includes: A heat dissipation substrate includes a first surface and a second surface opposite to each other, wherein the first surface of the heat dissipation substrate is fixed to the second surface of the insulating substrate in the first power module, and the second surface of the heat dissipation substrate dissipates heat. A cover plate that covers the first surface of the insulating substrate in the first power module.

52. The first power module according to claim 45, characterized in that, The power transistor includes an insulated-gate bipolar transistor (IGBT) and a fast recovery diode (FCD). The gate of the IGBT serves as the control terminal of the power transistor. The collector of the IGBT is connected to the cathode of the FCD and serves as the first terminal of the power transistor. The emitter of the IGBT is connected to the anode of the FCD and serves as the second terminal of the power transistor. Alternatively, the power transistor may include a metal-oxide-semiconductor field-effect transistor (MOSFET), wherein the gate of the MOSFET serves as the control terminal of the power transistor, the drain of the MOSFET serves as the first terminal of the power transistor, and the source of the MOSFET serves as the second terminal of the power transistor.

53. A first power module, characterized in that, include: DC positive terminal, first input terminal, first output terminal, first control terminal, second control terminal, third control terminal; A first power unit, wherein a first terminal of the first power unit is electrically connected to the DC positive terminal, and a control terminal of the first power unit is electrically connected to the first control terminal; The second power unit has a first terminal electrically connected to the second terminal of the first power unit, a second terminal electrically connected to the first output terminal, and a control terminal electrically connected to the second control terminal. as well as The fourth power unit has a first terminal electrically connected to the second terminal of the first power unit and the first terminal of the second power unit, a second terminal electrically connected to the first input terminal, and a control terminal electrically connected to the third control terminal.

54. The first power module according to claim 53, characterized in that, The first power module further includes: The first transmitting end is electrically connected to the second end of the first power unit; The second transmitting end is electrically connected to the second end of the second power unit; The third transmitting end is electrically connected to the second end of the fourth power unit.

55. The first power module according to any one of claims 53-54, characterized in that, The first power module further includes: The first temperature sensor includes a first end of the first temperature sensor and a second end of the first temperature sensor; The first temperature detection terminal is connected to the first terminal of the first temperature sensor; The second temperature detection terminal is connected to the second terminal of the first temperature sensor.

56. The first power module according to any one of claims 53-54, characterized in that, The first power module further includes: The third output terminal is electrically connected to the second terminal of the first power unit and the first terminal of the second power unit, and is also electrically connected to the first terminal of the third power unit or the first terminal of the fourth power unit.

57. The first power module according to claim 53, characterized in that, The first power module further includes: An insulating substrate includes a first surface and a second surface disposed opposite to each other. The first surface of the insulating substrate is provided with a first base island, a second base island, a third base island, a fourth base island, a fifth base island, a sixth base island, a seventh base island, an eighth base island, a ninth base island, a tenth base island, an eleventh base island, a twelfth base island, and a thirteenth base island located in the middle of the first power module. The first power unit is located on the first base island, and the first end of the first power unit is electrically connected to the first base island. The DC positive terminal is connected to the first base island to be electrically connected to the first end of the first power unit. The control terminal of the first power unit is electrically connected to the first control terminal via the third base island. The second power unit is located on the second base island, and the first end of the second power unit is electrically connected to the second base island. The control end of the second power unit is electrically connected to the second control end via the sixth base island. The second end of the second power unit is also electrically connected to the first output end via the ninth base island. The fourth power unit is located on the fifth base island, and its first terminal is electrically connected to the fifth base island. Its second terminal is electrically connected to the first input terminal via the eighth base island. The control terminal of the fourth power unit is also electrically connected to the third control terminal via the thirteenth base island. Wherein, the second end of the first power unit is connected to the fifth base island to be electrically connected to the first end of the fourth power unit, and the first end of the second power unit is connected to the fifth base island to be electrically connected to the first end of the fourth power unit.

58. The first power module according to claim 57, characterized in that, The first power module further includes: The housing has an insulating substrate located inside it. The housing leads out the DC positive terminal and the first input terminal located at the first end of the first power module. The housing leads out the first output terminal located at the second end of the first power module. The housing leads out the first control terminal and the second control terminal located at the third end of the first power module. The housing leads out the third control terminal located at the fourth end of the first power module.

59. The first power module according to claim 58, characterized in that, The housing also extends to a first temperature detection terminal and a second temperature detection terminal located at the fourth end of the first power module, with the first end and the second end opposite to each other, and the third end opposite to the fourth end. The first power module further includes: A first temperature sensor is located on the insulating substrate. The first end of the first temperature sensor is electrically connected to the first temperature detection end via the tenth base island, and the second end of the first temperature sensor is electrically connected to the second temperature detection end via the eleventh base island.

60. The first power module according to claim 58, characterized in that, The housing also extends a third output terminal located at the second end of the first power module, the third output terminal being connected to the second base island to be electrically connected to the first end of the second power unit.

61. The first power module according to claim 58, characterized in that, The housing also leads out a first transmitter and a second transmitter located at the third end of the first power module. The housing also leads out a third transmitter located at the fourth end of the first power module. The second end of the first power unit is electrically connected to the first transmitter via the fourth base island. The second end of the second power unit is electrically connected to the second transmitter via the ninth base island and the seventh base island. The second end of the fourth power unit is also electrically connected to the third transmitter via the eighth base island and the twelfth base island.

62. The first power module according to claim 57, characterized in that, The first power module further includes: A heat dissipation substrate includes a first surface and a second surface opposite to each other, wherein the first surface of the heat dissipation substrate is fixed to the second surface of the insulating substrate in the first power module, and the second surface of the heat dissipation substrate dissipates heat. A cover plate that covers the first surface of the insulating substrate in the first power module.

63. The first power module according to claim 62, characterized in that, The second surface of the heat dissipation substrate is a flat plate or has heat dissipation fins.

64. The first power module according to claim 53, characterized in that, The first power unit includes H power transistors connected in parallel. The first ends of the H power transistors are connected to each other to form the first end of the first power unit. The second ends of the H power transistors are connected to each other to form the second end of the first power unit. The control ends of the H power transistors are connected to each other to form the control end of the first power unit. The second power unit includes I power transistors connected in parallel. The first ends of the I power transistors are connected to each other to form the first end of the second power unit. The second ends of the I power transistors are connected to each other to form the second end of the second power unit. The control ends of the I power transistors are connected to each other to form the control end of the second power unit. The fourth power unit includes K power transistors connected in parallel. The first ends of the K power transistors are connected to each other to form the first end of the fourth power unit. The second ends of the K power transistors are connected to each other to form the second end of the fourth power unit. The control ends of the K power transistors are connected to each other to form the control end of the fourth power unit. H, I, and K are positive integers greater than or equal to 1.

65. The first power module according to claim 64, characterized in that, The power transistor includes an insulated-gate bipolar transistor (IGBT) and a fast recovery diode (FCD). The gate of the IGBT serves as the control terminal of the power transistor. The collector of the IGBT is connected to the cathode of the FCD and serves as the first terminal of the power transistor. The emitter of the IGBT is connected to the anode of the FCD and serves as the second terminal of the power transistor. Alternatively, the power transistor may include a metal-oxide-semiconductor field-effect transistor (MOSFET), wherein the gate of the MOSFET serves as the control terminal of the power transistor, the drain of the MOSFET serves as the first terminal of the power transistor, and the source of the MOSFET serves as the second terminal of the power transistor.

66. A second power module, characterized in that, include: DC negative terminal, second input terminal, second output terminal, fourth control terminal, fifth control terminal; The fifth power unit has its first terminal electrically connected to the second output terminal, its second terminal electrically connected, and its control terminal electrically connected to the fourth control terminal. The sixth power unit has a first terminal electrically connected to the second terminal of the fifth power unit, a second terminal electrically connected to the DC negative terminal, and a control terminal electrically connected to the fifth control terminal. as well as The seventh power unit has its first end electrically connected to the second input terminal, and its second end electrically connected to the second end of the fifth power unit and the first end of the sixth power unit.

67. The second power module according to claim 66, characterized in that, The second power module also includes: The fourth transmitting end is electrically connected to the second end of the fifth power unit; The fifth transmitting end is electrically connected to the second end of the sixth power unit.

68. The second power module according to claim 66, characterized in that, The second power module also includes: An insulating substrate includes a first surface and a second surface disposed opposite to each other. The first surface of the insulating substrate is provided with fourteenth, fifteenth, sixteenth, seventeenth, eighteenth, nineteenth, twentieth, twenty-first, twenty-second, twenty-third, and twenty-fourth base islands located in the middle of the second power module. The fifth power unit is located on the fourteenth base island, and the first end of the fifth power unit is electrically connected to the fourteenth base island. The second output end is connected to the fourteenth base island to be electrically connected to the first end of the fifth power unit. The control end of the fifth power unit is electrically connected to the fourth control end via the sixteenth base island. The sixth power unit is located on the fifteenth base island, and the first end of the sixth power unit is electrically connected to the fifteenth base island. The first end of the sixth power unit is also connected to the twenty-second base island via the fifteenth base island to be electrically connected to the second end of the fifth power unit. The control end of the sixth power unit is electrically connected to the fifth control end via the nineteenth base island. The second end of the sixth power unit is also electrically connected to the DC negative terminal via the twenty-first base island. The seventh power unit is located on the eighteenth base island, and the first end of the seventh power unit is electrically connected to the eighteenth base island. The second input end is connected to the eighteenth base island to be electrically connected to the first end of the seventh power unit. The second end of the seventh power unit is electrically connected to the first end of the sixth power unit via the fifteenth base island.

69. The second power module according to claim 68, characterized in that, The second power module also includes: The housing has an insulating substrate located inside it. The housing leads out the second input terminal and the DC negative terminal located at the first end of the second power module. The housing leads out the second output terminal located at the second end of the second power module. The housing leads out the fourth control terminal and the fifth control terminal located at the fourth end of the second power module.

70. The second power module according to claim 69, characterized in that, The housing also leads out a fourth transmitter and a fifth transmitter located at the fourth end of the second power module. The second end of the fifth power unit is electrically connected to the seventeenth base island via the twenty-twelfth base island to be electrically connected to the fourth transmitter. The second end of the sixth power unit is connected to the twenty-tenth base island and electrically connected to the fifth transmitter via the twenty-tenth base island.

71. The second power module according to claim 66, characterized in that, The fifth power unit includes L power transistors connected in parallel. The first ends of the L power transistors are connected to each other to form the first end of the fifth power unit. The second ends of the L power transistors are connected to each other to form the second end of the fifth power unit. The control ends of the L power transistors are connected to each other to form the control end of the fifth power unit. The sixth power unit includes M power transistors connected in parallel. The first ends of the M power transistors are connected to each other to form the first end of the sixth power unit. The second ends of the M power transistors are connected to each other to form the second end of the sixth power unit. The control ends of the M power transistors are connected to each other to form the control end of the sixth power unit. The seventh power unit includes N diodes connected in parallel. The first terminals of the N diodes are connected to each other to form the first terminal of the seventh power unit, and the second terminals of the N diodes are connected to each other to form the second terminal of the seventh power unit. L, M, and N are positive integers greater than or equal to 1.

72. The second power module according to claim 71, characterized in that, The diode is a silicon-based diode or a silicon carbide Schottky barrier diode, with the cathode of the diode serving as the first terminal and the anode of the diode serving as the second terminal.

73. The second power module according to any one of claims 66-67, characterized in that, The second power module also includes: The second temperature sensor includes a first end of the second temperature sensor and a second end of the second temperature sensor. The third temperature detection terminal is connected to the first terminal of the second temperature sensor; The fourth temperature detection terminal is connected to the second terminal of the second temperature sensor.

74. The second power module according to any one of claims 66-67, characterized in that, The second power module also includes: The fourth output terminal is electrically connected to the second terminal of the fifth power unit, the first terminal of the sixth power unit, and the second terminal of the seventh power unit or the second terminal of the eighth power unit.

75. The second power module according to claim 69, characterized in that, The housing also extends a third temperature detection terminal and a fourth temperature detection terminal located at the third end of the second power module, with the first end and the second end opposite to each other, and the third end and the fourth end opposite to each other. The second power module further includes: The second temperature sensor is located on the insulating substrate. The first end of the second temperature sensor is electrically connected to the third temperature detection end via the 23rd base island, and the second end of the second temperature sensor is electrically connected to the fourth temperature detection end via the 24th base island.

76. The second power module according to claim 69, characterized in that, The housing also extends a fourth output terminal located at the second end of the second power module, which is connected to the second twelfth base island to be electrically connected to the second end of the fifth power unit.

77. The second power module according to claim 68, characterized in that, The second power module also includes: A heat dissipation substrate includes a first surface and a second surface opposite to each other, wherein the first surface of the heat dissipation substrate is fixed to the second surface of an insulating substrate in the second power module, and the second surface of the heat dissipation substrate dissipates heat. A cover plate that covers the first surface of the insulating substrate in the second power module.

78. The second power module according to claim 71, characterized in that, The power transistor includes an insulated-gate bipolar transistor (IGBT) and a fast recovery diode (FCD). The gate of the IGBT serves as the control terminal of the power transistor. The collector of the IGBT is connected to the cathode of the FCD and serves as the first terminal of the power transistor. The emitter of the IGBT is connected to the anode of the FCD and serves as the second terminal of the power transistor. Alternatively, the power transistor may include a metal-oxide-semiconductor field-effect transistor (MOSFET), wherein the gate of the MOSFET serves as the control terminal of the power transistor, the drain of the MOSFET serves as the first terminal of the power transistor, and the source of the MOSFET serves as the second terminal of the power transistor.

79. A second power module, characterized in that, include: DC negative terminal, second input terminal, second output terminal, fourth control terminal, fifth control terminal, sixth control terminal; The fifth power unit has its first terminal electrically connected to the second output terminal, and its control terminal electrically connected to the fourth control terminal. The sixth power unit has a first terminal electrically connected to the second terminal of the fifth power unit, a second terminal electrically connected to the DC negative terminal, and a control terminal electrically connected to the fifth control terminal. as well as The eighth power unit has its first end electrically connected to the second input end, its second end electrically connected to the second end of the fifth power unit and the first end of the sixth power unit, and its control end electrically connected to the sixth control end.

80. The second power module according to claim 79, characterized in that, The second power module also includes: The fourth transmitting end is electrically connected to the second end of the fifth power unit; The fifth transmitting end is electrically connected to the second end of the sixth power unit; The sixth transmitting end is electrically connected to the second end of the eighth power unit.

81. The second power module according to any one of claims 79-80, characterized in that, The second power module also includes: The second temperature sensor includes a first end of the second temperature sensor and a second end of the second temperature sensor. The third temperature detection terminal is connected to the first terminal of the second temperature sensor; The fourth temperature detection terminal is connected to the second terminal of the second temperature sensor.

82. The second power module according to any one of claims 79-80, characterized in that, The second power module also includes: The fourth output terminal is electrically connected to the second terminal of the fifth power unit, the first terminal of the sixth power unit, and the second terminal of the seventh power unit or the second terminal of the eighth power unit.

83. The second power module according to claim 79, characterized in that, The second power module also includes: An insulating substrate includes a first surface and a second surface disposed opposite to each other. The first surface of the insulating substrate is provided with fourteenth, fifteenth, sixteenth, seventeenth, eighteenth, nineteenth, twentieth, twenty-first, twenty-second, twenty-third, twenty-fourth, twenty-fifth, and twenty-sixth base islands located in the middle of the second power module. The fifth power unit is located on the fourteenth base island, and the first end of the fifth power unit is electrically connected to the fourteenth base island. The second output end is connected to the fourteenth base island to be electrically connected to the first end of the fifth power unit. The control end of the fifth power unit is electrically connected to the fourth control end via the sixteenth base island. The sixth power unit is located on the fifteenth base island, and the first end of the sixth power unit is electrically connected to the fifteenth base island. The first end of the sixth power unit is also connected to the twenty-second base island via the fifteenth base island to be electrically connected to the second end of the fifth power unit. The control end of the sixth power unit is electrically connected to the fifth control end via the nineteenth base island. The second end of the sixth power unit is also electrically connected to the DC negative terminal via the twenty-first base island. The eighth power unit is located on the eighteenth base island, and the first end of the eighth power unit is electrically connected to the eighteenth base island. The second input end is connected to the eighteenth base island to be electrically connected to the first end of the eighth power unit. The second end of the eighth power unit is electrically connected to the first end of the sixth power unit via the fifteenth base island. The control end of the eighth power unit is also electrically connected to the sixth control end via the twenty-sixth base island.

84. The second power module according to claim 83, characterized in that, The second power module also includes: The housing has an insulating substrate located inside it. The housing leads out the second input terminal and the DC negative terminal located at the first end of the second power module. The housing leads out the second output terminal located at the second end of the second power module. The housing leads out the fourth control terminal and the fifth control terminal located at the fourth end of the second power module. The housing leads out the sixth control terminal located at the third end of the second power module.

85. The second power module according to claim 84, characterized in that, The housing also extends a third temperature detection terminal and a fourth temperature detection terminal located at the third end of the second power module, with the first end and the second end opposite to each other, and the third end and the fourth end opposite to each other. The second power module further includes: The second temperature sensor is located on the insulating substrate. The first end of the second temperature sensor is electrically connected to the third temperature detection end via the 23rd base island, and the second end of the second temperature sensor is electrically connected to the fourth temperature detection end via the 24th base island.

86. The second power module according to claim 84, characterized in that, The housing also extends a fourth output terminal located at the second end of the second power module, which is connected to the second twelfth base island to be electrically connected to the second end of the fifth power unit.

87. The second power module according to claim 84, characterized in that, The housing also leads out a fourth transmitter and a fifth transmitter located at the fourth end of the second power module. The housing also leads out a sixth transmitter located at the third end of the second power module. The second end of the fifth power unit is electrically connected to the seventeenth base island via the twenty-twelfth base island to be electrically connected to the fourth transmitter. The second end of the sixth power unit is electrically connected to the fifth transmitter via the twenty-tenth base island. The second end of the eighth power unit is also electrically connected to the sixth transmitter via the twenty-fifth base island.

88. The second power module according to claim 83, characterized in that, The second power module also includes: A heat dissipation substrate includes a first surface and a second surface opposite to each other, wherein the first surface of the heat dissipation substrate is fixed to the second surface of an insulating substrate in the second power module, and the second surface of the heat dissipation substrate dissipates heat. A cover plate that covers the first surface of the insulating substrate in the second power module.

89. The second power module according to claim 88, characterized in that, The second surface of the heat dissipation substrate is a flat plate or has heat dissipation fins.

90. The second power module according to claim 79, characterized in that, The fifth power unit includes L power transistors connected in parallel. The first ends of the L power transistors are connected to each other to form the first end of the fifth power unit. The second ends of the L power transistors are connected to each other to form the second end of the fifth power unit. The control ends of the L power transistors are connected to each other to form the control end of the fifth power unit. The sixth power unit includes M power transistors connected in parallel. The first ends of the M power transistors are connected to each other to form the first end of the sixth power unit. The second ends of the M power transistors are connected to each other to form the second end of the sixth power unit. The control ends of the M power transistors are connected to each other to form the control end of the sixth power unit. The eighth power unit includes P power transistors connected in parallel. The first terminals of the P power transistors are connected to each other to form the first terminal of the eighth power unit. The second terminals of the P power transistors are connected to each other to form the second terminal of the eighth power unit. The control terminals of the P power transistors are connected to each other to form the control terminal of the eighth power unit. L, M, and P are positive integers greater than or equal to 1.

91. The second power module according to claim 90, characterized in that, The power transistor includes an insulated-gate bipolar transistor (IGBT) and a fast recovery diode (FCD). The gate of the IGBT serves as the control terminal of the power transistor. The collector of the IGBT is connected to the cathode of the FCD and serves as the first terminal of the power transistor. The emitter of the IGBT is connected to the anode of the FCD and serves as the second terminal of the power transistor. Alternatively, the power transistor may include a metal-oxide-semiconductor field-effect transistor (MOSFET), wherein the gate of the MOSFET serves as the control terminal of the power transistor, the drain of the MOSFET serves as the first terminal of the power transistor, and the source of the MOSFET serves as the second terminal of the power transistor.

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